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1 /****************************************************************************
2 * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
3 ****************************************************************************
4 * rrd__graph.c produce graphs from data in rrdfiles
5 ****************************************************************************/
8 #include <sys/stat.h>
10 #ifdef WIN32
11 #include "strftime.h"
12 #endif
14 #include "rrd_tool.h"
16 /* for basename */
17 #ifdef HAVE_LIBGEN_H
18 # include <libgen.h>
19 #else
20 #include "plbasename.h"
21 #endif
23 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
24 #include <io.h>
25 #include <fcntl.h>
26 #endif
28 #include <time.h>
30 #include <locale.h>
32 #ifdef HAVE_LANGINFO_H
33 #include <langinfo.h>
34 #endif
36 #include "rrd_graph.h"
37 #include "rrd_client.h"
39 /* some constant definitions */
43 #ifndef RRD_DEFAULT_FONT
44 /* there is special code later to pick Cour.ttf when running on windows */
45 #define RRD_DEFAULT_FONT "DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier"
46 #endif
48 text_prop_t text_prop[] = {
49 {8.0, RRD_DEFAULT_FONT,NULL}
50 , /* default */
51 {9.0, RRD_DEFAULT_FONT,NULL}
52 , /* title */
53 {7.0, RRD_DEFAULT_FONT,NULL}
54 , /* axis */
55 {8.0, RRD_DEFAULT_FONT,NULL}
56 , /* unit */
57 {8.0, RRD_DEFAULT_FONT,NULL} /* legend */
58 ,
59 {5.5, RRD_DEFAULT_FONT,NULL} /* watermark */
60 };
62 char week_fmt[128] = "Week %V";
64 xlab_t xlab[] = {
65 {0, 0, TMT_SECOND, 30, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
66 ,
67 {2, 0, TMT_MINUTE, 1, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
68 ,
69 {5, 0, TMT_MINUTE, 2, TMT_MINUTE, 10, TMT_MINUTE, 10, 0, "%H:%M"}
70 ,
71 {10, 0, TMT_MINUTE, 5, TMT_MINUTE, 20, TMT_MINUTE, 20, 0, "%H:%M"}
72 ,
73 {30, 0, TMT_MINUTE, 10, TMT_HOUR, 1, TMT_HOUR, 1, 0, "%H:%M"}
74 ,
75 {60, 0, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 2, 0, "%H:%M"}
76 ,
77 {60, 24 * 3600, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 6, 0, "%a %H:%M"}
78 ,
79 {180, 0, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 6, 0, "%H:%M"}
80 ,
81 {180, 24 * 3600, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 12, 0, "%a %H:%M"}
82 ,
83 /*{300, 0, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly */
84 {600, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%a"}
85 ,
86 {1200, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%d"}
87 ,
88 {1800, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a %d"}
89 ,
90 {2400, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a"}
91 ,
92 {3600, 0, TMT_DAY, 1, TMT_WEEK, 1, TMT_WEEK, 1, 7 * 24 * 3600, week_fmt}
93 ,
94 {3 * 3600, 0, TMT_WEEK, 1, TMT_MONTH, 1, TMT_WEEK, 2, 7 * 24 * 3600,
95 week_fmt}
96 ,
97 {6 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 1, TMT_MONTH, 1, 30 * 24 * 3600,
98 "%b"}
99 ,
100 {48 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 3, TMT_MONTH, 3, 30 * 24 * 3600,
101 "%b"}
102 ,
103 {315360, 0, TMT_MONTH, 3, TMT_YEAR, 1, TMT_YEAR, 1, 365 * 24 * 3600, "%Y"}
104 ,
105 {10 * 24 * 3600, 0, TMT_YEAR, 1, TMT_YEAR, 1, TMT_YEAR, 1,
106 365 * 24 * 3600, "%y"}
107 ,
108 {-1, 0, TMT_MONTH, 0, TMT_MONTH, 0, TMT_MONTH, 0, 0, ""}
109 };
111 /* sensible y label intervals ...*/
113 ylab_t ylab[] = {
114 {0.1, {1, 2, 5, 10}
115 }
116 ,
117 {0.2, {1, 5, 10, 20}
118 }
119 ,
120 {0.5, {1, 2, 4, 10}
121 }
122 ,
123 {1.0, {1, 2, 5, 10}
124 }
125 ,
126 {2.0, {1, 5, 10, 20}
127 }
128 ,
129 {5.0, {1, 2, 4, 10}
130 }
131 ,
132 {10.0, {1, 2, 5, 10}
133 }
134 ,
135 {20.0, {1, 5, 10, 20}
136 }
137 ,
138 {50.0, {1, 2, 4, 10}
139 }
140 ,
141 {100.0, {1, 2, 5, 10}
142 }
143 ,
144 {200.0, {1, 5, 10, 20}
145 }
146 ,
147 {500.0, {1, 2, 4, 10}
148 }
149 ,
150 {0.0, {0, 0, 0, 0}
151 }
152 };
155 gfx_color_t graph_col[] = /* default colors */
156 {
157 {1.00, 1.00, 1.00, 1.00}, /* canvas */
158 {0.95, 0.95, 0.95, 1.00}, /* background */
159 {0.81, 0.81, 0.81, 1.00}, /* shade A */
160 {0.62, 0.62, 0.62, 1.00}, /* shade B */
161 {0.56, 0.56, 0.56, 0.75}, /* grid */
162 {0.87, 0.31, 0.31, 0.60}, /* major grid */
163 {0.00, 0.00, 0.00, 1.00}, /* font */
164 {0.50, 0.12, 0.12, 1.00}, /* arrow */
165 {0.12, 0.12, 0.12, 1.00}, /* axis */
166 {0.00, 0.00, 0.00, 1.00} /* frame */
167 };
170 /* #define DEBUG */
172 #ifdef DEBUG
173 # define DPRINT(x) (void)(printf x, printf("\n"))
174 #else
175 # define DPRINT(x)
176 #endif
179 /* initialize with xtr(im,0); */
180 int xtr(
181 image_desc_t *im,
182 time_t mytime)
183 {
184 static double pixie;
186 if (mytime == 0) {
187 pixie = (double) im->xsize / (double) (im->end - im->start);
188 return im->xorigin;
189 }
190 return (int) ((double) im->xorigin + pixie * (mytime - im->start));
191 }
193 /* translate data values into y coordinates */
194 double ytr(
195 image_desc_t *im,
196 double value)
197 {
198 static double pixie;
199 double yval;
201 if (isnan(value)) {
202 if (!im->logarithmic)
203 pixie = (double) im->ysize / (im->maxval - im->minval);
204 else
205 pixie =
206 (double) im->ysize / (log10(im->maxval) - log10(im->minval));
207 yval = im->yorigin;
208 } else if (!im->logarithmic) {
209 yval = im->yorigin - pixie * (value - im->minval);
210 } else {
211 if (value < im->minval) {
212 yval = im->yorigin;
213 } else {
214 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
215 }
216 }
217 return yval;
218 }
222 /* conversion function for symbolic entry names */
225 #define conv_if(VV,VVV) \
226 if (strcmp(#VV, string) == 0) return VVV ;
228 enum gf_en gf_conv(
229 char *string)
230 {
232 conv_if(PRINT, GF_PRINT);
233 conv_if(GPRINT, GF_GPRINT);
234 conv_if(COMMENT, GF_COMMENT);
235 conv_if(HRULE, GF_HRULE);
236 conv_if(VRULE, GF_VRULE);
237 conv_if(LINE, GF_LINE);
238 conv_if(AREA, GF_AREA);
239 conv_if(GRAD, GF_GRAD);
240 conv_if(STACK, GF_STACK);
241 conv_if(TICK, GF_TICK);
242 conv_if(TEXTALIGN, GF_TEXTALIGN);
243 conv_if(DEF, GF_DEF);
244 conv_if(CDEF, GF_CDEF);
245 conv_if(VDEF, GF_VDEF);
246 conv_if(XPORT, GF_XPORT);
247 conv_if(SHIFT, GF_SHIFT);
249 return (enum gf_en)(-1);
250 }
252 enum gfx_if_en if_conv(
253 char *string)
254 {
256 conv_if(PNG, IF_PNG);
257 conv_if(SVG, IF_SVG);
258 conv_if(EPS, IF_EPS);
259 conv_if(PDF, IF_PDF);
261 return (enum gfx_if_en)(-1);
262 }
264 enum tmt_en tmt_conv(
265 char *string)
266 {
268 conv_if(SECOND, TMT_SECOND);
269 conv_if(MINUTE, TMT_MINUTE);
270 conv_if(HOUR, TMT_HOUR);
271 conv_if(DAY, TMT_DAY);
272 conv_if(WEEK, TMT_WEEK);
273 conv_if(MONTH, TMT_MONTH);
274 conv_if(YEAR, TMT_YEAR);
275 return (enum tmt_en)(-1);
276 }
278 enum grc_en grc_conv(
279 char *string)
280 {
282 conv_if(BACK, GRC_BACK);
283 conv_if(CANVAS, GRC_CANVAS);
284 conv_if(SHADEA, GRC_SHADEA);
285 conv_if(SHADEB, GRC_SHADEB);
286 conv_if(GRID, GRC_GRID);
287 conv_if(MGRID, GRC_MGRID);
288 conv_if(FONT, GRC_FONT);
289 conv_if(ARROW, GRC_ARROW);
290 conv_if(AXIS, GRC_AXIS);
291 conv_if(FRAME, GRC_FRAME);
293 return (enum grc_en)(-1);
294 }
296 enum text_prop_en text_prop_conv(
297 char *string)
298 {
300 conv_if(DEFAULT, TEXT_PROP_DEFAULT);
301 conv_if(TITLE, TEXT_PROP_TITLE);
302 conv_if(AXIS, TEXT_PROP_AXIS);
303 conv_if(UNIT, TEXT_PROP_UNIT);
304 conv_if(LEGEND, TEXT_PROP_LEGEND);
305 conv_if(WATERMARK, TEXT_PROP_WATERMARK);
306 return (enum text_prop_en)(-1);
307 }
310 #undef conv_if
312 int im_free(
313 image_desc_t *im)
314 {
315 unsigned long i, ii;
316 cairo_status_t status = (cairo_status_t) 0;
318 if (im == NULL)
319 return 0;
321 if (im->daemon_addr != NULL)
322 free(im->daemon_addr);
324 for (i = 0; i < (unsigned) im->gdes_c; i++) {
325 if (im->gdes[i].data_first) {
326 /* careful here, because a single pointer can occur several times */
327 free(im->gdes[i].data);
328 if (im->gdes[i].ds_namv) {
329 for (ii = 0; ii < im->gdes[i].ds_cnt; ii++)
330 free(im->gdes[i].ds_namv[ii]);
331 free(im->gdes[i].ds_namv);
332 }
333 }
334 /* free allocated memory used for dashed lines */
335 if (im->gdes[i].p_dashes != NULL)
336 free(im->gdes[i].p_dashes);
338 free(im->gdes[i].p_data);
339 free(im->gdes[i].rpnp);
340 }
341 free(im->gdes);
343 for (i = 0; i < DIM(text_prop);i++){
344 pango_font_description_free(im->text_prop[i].font_desc);
345 im->text_prop[i].font_desc = NULL;
346 }
348 if (im->font_options)
349 cairo_font_options_destroy(im->font_options);
351 if (im->cr) {
352 status = cairo_status(im->cr);
353 cairo_destroy(im->cr);
354 }
357 if (im->rendered_image) {
358 free(im->rendered_image);
359 }
361 if (im->layout) {
362 g_object_unref (im->layout);
363 }
365 if (im->surface)
366 cairo_surface_destroy(im->surface);
368 if (status)
369 fprintf(stderr, "OOPS: Cairo has issues it can't even die: %s\n",
370 cairo_status_to_string(status));
372 return 0;
373 }
375 /* find SI magnitude symbol for the given number*/
376 void auto_scale(
377 image_desc_t *im, /* image description */
378 double *value,
379 char **symb_ptr,
380 double *magfact)
381 {
383 char *symbol[] = { "a", /* 10e-18 Atto */
384 "f", /* 10e-15 Femto */
385 "p", /* 10e-12 Pico */
386 "n", /* 10e-9 Nano */
387 "u", /* 10e-6 Micro */
388 "m", /* 10e-3 Milli */
389 " ", /* Base */
390 "k", /* 10e3 Kilo */
391 "M", /* 10e6 Mega */
392 "G", /* 10e9 Giga */
393 "T", /* 10e12 Tera */
394 "P", /* 10e15 Peta */
395 "E"
396 }; /* 10e18 Exa */
398 int symbcenter = 6;
399 int sindex;
401 if (*value == 0.0 || isnan(*value)) {
402 sindex = 0;
403 *magfact = 1.0;
404 } else {
405 sindex = floor(log(fabs(*value)) / log((double) im->base));
406 *magfact = pow((double) im->base, (double) sindex);
407 (*value) /= (*magfact);
408 }
409 if (sindex <= symbcenter && sindex >= -symbcenter) {
410 (*symb_ptr) = symbol[sindex + symbcenter];
411 } else {
412 (*symb_ptr) = "?";
413 }
414 }
417 static char si_symbol[] = {
418 'a', /* 10e-18 Atto */
419 'f', /* 10e-15 Femto */
420 'p', /* 10e-12 Pico */
421 'n', /* 10e-9 Nano */
422 'u', /* 10e-6 Micro */
423 'm', /* 10e-3 Milli */
424 ' ', /* Base */
425 'k', /* 10e3 Kilo */
426 'M', /* 10e6 Mega */
427 'G', /* 10e9 Giga */
428 'T', /* 10e12 Tera */
429 'P', /* 10e15 Peta */
430 'E', /* 10e18 Exa */
431 };
432 static const int si_symbcenter = 6;
434 /* find SI magnitude symbol for the numbers on the y-axis*/
435 void si_unit(
436 image_desc_t *im /* image description */
437 )
438 {
440 double digits, viewdigits = 0;
442 digits =
443 floor(log(max(fabs(im->minval), fabs(im->maxval))) /
444 log((double) im->base));
446 if (im->unitsexponent != 9999) {
447 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
448 viewdigits = floor((double)(im->unitsexponent / 3));
449 } else {
450 viewdigits = digits;
451 }
453 im->magfact = pow((double) im->base, digits);
455 #ifdef DEBUG
456 printf("digits %6.3f im->magfact %6.3f\n", digits, im->magfact);
457 #endif
459 im->viewfactor = im->magfact / pow((double) im->base, viewdigits);
461 if (((viewdigits + si_symbcenter) < sizeof(si_symbol)) &&
462 ((viewdigits + si_symbcenter) >= 0))
463 im->symbol = si_symbol[(int) viewdigits + si_symbcenter];
464 else
465 im->symbol = '?';
466 }
468 /* move min and max values around to become sensible */
470 void expand_range(
471 image_desc_t *im)
472 {
473 double sensiblevalues[] = { 1000.0, 900.0, 800.0, 750.0, 700.0,
474 600.0, 500.0, 400.0, 300.0, 250.0,
475 200.0, 125.0, 100.0, 90.0, 80.0,
476 75.0, 70.0, 60.0, 50.0, 40.0, 30.0,
477 25.0, 20.0, 10.0, 9.0, 8.0,
478 7.0, 6.0, 5.0, 4.0, 3.5, 3.0,
479 2.5, 2.0, 1.8, 1.5, 1.2, 1.0,
480 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.0, -1
481 };
483 double scaled_min, scaled_max;
484 double adj;
485 int i;
489 #ifdef DEBUG
490 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
491 im->minval, im->maxval, im->magfact);
492 #endif
494 if (isnan(im->ygridstep)) {
495 if (im->extra_flags & ALTAUTOSCALE) {
496 /* measure the amplitude of the function. Make sure that
497 graph boundaries are slightly higher then max/min vals
498 so we can see amplitude on the graph */
499 double delt, fact;
501 delt = im->maxval - im->minval;
502 adj = delt * 0.1;
503 fact = 2.0 * pow(10.0,
504 floor(log10
505 (max(fabs(im->minval), fabs(im->maxval)) /
506 im->magfact)) - 2);
507 if (delt < fact) {
508 adj = (fact - delt) * 0.55;
509 #ifdef DEBUG
510 printf
511 ("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n",
512 im->minval, im->maxval, delt, fact, adj);
513 #endif
514 }
515 im->minval -= adj;
516 im->maxval += adj;
517 } else if (im->extra_flags & ALTAUTOSCALE_MIN) {
518 /* measure the amplitude of the function. Make sure that
519 graph boundaries are slightly lower than min vals
520 so we can see amplitude on the graph */
521 adj = (im->maxval - im->minval) * 0.1;
522 im->minval -= adj;
523 } else if (im->extra_flags & ALTAUTOSCALE_MAX) {
524 /* measure the amplitude of the function. Make sure that
525 graph boundaries are slightly higher than max vals
526 so we can see amplitude on the graph */
527 adj = (im->maxval - im->minval) * 0.1;
528 im->maxval += adj;
529 } else {
530 scaled_min = im->minval / im->magfact;
531 scaled_max = im->maxval / im->magfact;
533 for (i = 1; sensiblevalues[i] > 0; i++) {
534 if (sensiblevalues[i - 1] >= scaled_min &&
535 sensiblevalues[i] <= scaled_min)
536 im->minval = sensiblevalues[i] * (im->magfact);
538 if (-sensiblevalues[i - 1] <= scaled_min &&
539 -sensiblevalues[i] >= scaled_min)
540 im->minval = -sensiblevalues[i - 1] * (im->magfact);
542 if (sensiblevalues[i - 1] >= scaled_max &&
543 sensiblevalues[i] <= scaled_max)
544 im->maxval = sensiblevalues[i - 1] * (im->magfact);
546 if (-sensiblevalues[i - 1] <= scaled_max &&
547 -sensiblevalues[i] >= scaled_max)
548 im->maxval = -sensiblevalues[i] * (im->magfact);
549 }
550 }
551 } else {
552 /* adjust min and max to the grid definition if there is one */
553 im->minval = (double) im->ylabfact * im->ygridstep *
554 floor(im->minval / ((double) im->ylabfact * im->ygridstep));
555 im->maxval = (double) im->ylabfact * im->ygridstep *
556 ceil(im->maxval / ((double) im->ylabfact * im->ygridstep));
557 }
559 #ifdef DEBUG
560 fprintf(stderr, "SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
561 im->minval, im->maxval, im->magfact);
562 #endif
563 }
566 void apply_gridfit(
567 image_desc_t *im)
568 {
569 if (isnan(im->minval) || isnan(im->maxval))
570 return;
571 ytr(im, DNAN);
572 if (im->logarithmic) {
573 double ya, yb, ypix, ypixfrac;
574 double log10_range = log10(im->maxval) - log10(im->minval);
576 ya = pow((double) 10, floor(log10(im->minval)));
577 while (ya < im->minval)
578 ya *= 10;
579 if (ya > im->maxval)
580 return; /* don't have y=10^x gridline */
581 yb = ya * 10;
582 if (yb <= im->maxval) {
583 /* we have at least 2 y=10^x gridlines.
584 Make sure distance between them in pixels
585 are an integer by expanding im->maxval */
586 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
587 double factor = y_pixel_delta / floor(y_pixel_delta);
588 double new_log10_range = factor * log10_range;
589 double new_ymax_log10 = log10(im->minval) + new_log10_range;
591 im->maxval = pow(10, new_ymax_log10);
592 ytr(im, DNAN); /* reset precalc */
593 log10_range = log10(im->maxval) - log10(im->minval);
594 }
595 /* make sure first y=10^x gridline is located on
596 integer pixel position by moving scale slightly
597 downwards (sub-pixel movement) */
598 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
599 ypixfrac = ypix - floor(ypix);
600 if (ypixfrac > 0 && ypixfrac < 1) {
601 double yfrac = ypixfrac / im->ysize;
603 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
604 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
605 ytr(im, DNAN); /* reset precalc */
606 }
607 } else {
608 /* Make sure we have an integer pixel distance between
609 each minor gridline */
610 double ypos1 = ytr(im, im->minval);
611 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
612 double y_pixel_delta = ypos1 - ypos2;
613 double factor = y_pixel_delta / floor(y_pixel_delta);
614 double new_range = factor * (im->maxval - im->minval);
615 double gridstep = im->ygrid_scale.gridstep;
616 double minor_y, minor_y_px, minor_y_px_frac;
618 if (im->maxval > 0.0)
619 im->maxval = im->minval + new_range;
620 else
621 im->minval = im->maxval - new_range;
622 ytr(im, DNAN); /* reset precalc */
623 /* make sure first minor gridline is on integer pixel y coord */
624 minor_y = gridstep * floor(im->minval / gridstep);
625 while (minor_y < im->minval)
626 minor_y += gridstep;
627 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
628 minor_y_px_frac = minor_y_px - floor(minor_y_px);
629 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
630 double yfrac = minor_y_px_frac / im->ysize;
631 double range = im->maxval - im->minval;
633 im->minval = im->minval - yfrac * range;
634 im->maxval = im->maxval - yfrac * range;
635 ytr(im, DNAN); /* reset precalc */
636 }
637 calc_horizontal_grid(im); /* recalc with changed im->maxval */
638 }
639 }
641 /* reduce data reimplementation by Alex */
643 void reduce_data(
644 enum cf_en cf, /* which consolidation function ? */
645 unsigned long cur_step, /* step the data currently is in */
646 time_t *start, /* start, end and step as requested ... */
647 time_t *end, /* ... by the application will be ... */
648 unsigned long *step, /* ... adjusted to represent reality */
649 unsigned long *ds_cnt, /* number of data sources in file */
650 rrd_value_t **data)
651 { /* two dimensional array containing the data */
652 int i, reduce_factor = ceil((double) (*step) / (double) cur_step);
653 unsigned long col, dst_row, row_cnt, start_offset, end_offset, skiprows =
654 0;
655 rrd_value_t *srcptr, *dstptr;
657 (*step) = cur_step * reduce_factor; /* set new step size for reduced data */
658 dstptr = *data;
659 srcptr = *data;
660 row_cnt = ((*end) - (*start)) / cur_step;
662 #ifdef DEBUG
663 #define DEBUG_REDUCE
664 #endif
665 #ifdef DEBUG_REDUCE
666 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
667 row_cnt, reduce_factor, *start, *end, cur_step);
668 for (col = 0; col < row_cnt; col++) {
669 printf("time %10lu: ", *start + (col + 1) * cur_step);
670 for (i = 0; i < *ds_cnt; i++)
671 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
672 printf("\n");
673 }
674 #endif
676 /* We have to combine [reduce_factor] rows of the source
677 ** into one row for the destination. Doing this we also
678 ** need to take care to combine the correct rows. First
679 ** alter the start and end time so that they are multiples
680 ** of the new step time. We cannot reduce the amount of
681 ** time so we have to move the end towards the future and
682 ** the start towards the past.
683 */
684 end_offset = (*end) % (*step);
685 start_offset = (*start) % (*step);
687 /* If there is a start offset (which cannot be more than
688 ** one destination row), skip the appropriate number of
689 ** source rows and one destination row. The appropriate
690 ** number is what we do know (start_offset/cur_step) of
691 ** the new interval (*step/cur_step aka reduce_factor).
692 */
693 #ifdef DEBUG_REDUCE
694 printf("start_offset: %lu end_offset: %lu\n", start_offset, end_offset);
695 printf("row_cnt before: %lu\n", row_cnt);
696 #endif
697 if (start_offset) {
698 (*start) = (*start) - start_offset;
699 skiprows = reduce_factor - start_offset / cur_step;
700 srcptr += skiprows * *ds_cnt;
701 for (col = 0; col < (*ds_cnt); col++)
702 *dstptr++ = DNAN;
703 row_cnt -= skiprows;
704 }
705 #ifdef DEBUG_REDUCE
706 printf("row_cnt between: %lu\n", row_cnt);
707 #endif
709 /* At the end we have some rows that are not going to be
710 ** used, the amount is end_offset/cur_step
711 */
712 if (end_offset) {
713 (*end) = (*end) - end_offset + (*step);
714 skiprows = end_offset / cur_step;
715 row_cnt -= skiprows;
716 }
717 #ifdef DEBUG_REDUCE
718 printf("row_cnt after: %lu\n", row_cnt);
719 #endif
721 /* Sanity check: row_cnt should be multiple of reduce_factor */
722 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
724 if (row_cnt % reduce_factor) {
725 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
726 row_cnt, reduce_factor);
727 printf("BUG in reduce_data()\n");
728 exit(1);
729 }
731 /* Now combine reduce_factor intervals at a time
732 ** into one interval for the destination.
733 */
735 for (dst_row = 0; (long int) row_cnt >= reduce_factor; dst_row++) {
736 for (col = 0; col < (*ds_cnt); col++) {
737 rrd_value_t newval = DNAN;
738 unsigned long validval = 0;
740 for (i = 0; i < reduce_factor; i++) {
741 if (isnan(srcptr[i * (*ds_cnt) + col])) {
742 continue;
743 }
744 validval++;
745 if (isnan(newval))
746 newval = srcptr[i * (*ds_cnt) + col];
747 else {
748 switch (cf) {
749 case CF_HWPREDICT:
750 case CF_MHWPREDICT:
751 case CF_DEVSEASONAL:
752 case CF_DEVPREDICT:
753 case CF_SEASONAL:
754 case CF_AVERAGE:
755 newval += srcptr[i * (*ds_cnt) + col];
756 break;
757 case CF_MINIMUM:
758 newval = min(newval, srcptr[i * (*ds_cnt) + col]);
759 break;
760 case CF_FAILURES:
761 /* an interval contains a failure if any subintervals contained a failure */
762 case CF_MAXIMUM:
763 newval = max(newval, srcptr[i * (*ds_cnt) + col]);
764 break;
765 case CF_LAST:
766 newval = srcptr[i * (*ds_cnt) + col];
767 break;
768 }
769 }
770 }
771 if (validval == 0) {
772 newval = DNAN;
773 } else {
774 switch (cf) {
775 case CF_HWPREDICT:
776 case CF_MHWPREDICT:
777 case CF_DEVSEASONAL:
778 case CF_DEVPREDICT:
779 case CF_SEASONAL:
780 case CF_AVERAGE:
781 newval /= validval;
782 break;
783 case CF_MINIMUM:
784 case CF_FAILURES:
785 case CF_MAXIMUM:
786 case CF_LAST:
787 break;
788 }
789 }
790 *dstptr++ = newval;
791 }
792 srcptr += (*ds_cnt) * reduce_factor;
793 row_cnt -= reduce_factor;
794 }
795 /* If we had to alter the endtime, we didn't have enough
796 ** source rows to fill the last row. Fill it with NaN.
797 */
798 if (end_offset)
799 for (col = 0; col < (*ds_cnt); col++)
800 *dstptr++ = DNAN;
801 #ifdef DEBUG_REDUCE
802 row_cnt = ((*end) - (*start)) / *step;
803 srcptr = *data;
804 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
805 row_cnt, *start, *end, *step);
806 for (col = 0; col < row_cnt; col++) {
807 printf("time %10lu: ", *start + (col + 1) * (*step));
808 for (i = 0; i < *ds_cnt; i++)
809 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
810 printf("\n");
811 }
812 #endif
813 }
816 /* get the data required for the graphs from the
817 relevant rrds ... */
819 int data_fetch(
820 image_desc_t *im)
821 {
822 int i, ii;
823 int skip;
825 /* pull the data from the rrd files ... */
826 for (i = 0; i < (int) im->gdes_c; i++) {
827 /* only GF_DEF elements fetch data */
828 if (im->gdes[i].gf != GF_DEF)
829 continue;
831 skip = 0;
832 /* do we have it already ? */
833 for (ii = 0; ii < i; ii++) {
834 if (im->gdes[ii].gf != GF_DEF)
835 continue;
836 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
837 && (im->gdes[i].cf == im->gdes[ii].cf)
838 && (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
839 && (im->gdes[i].start_orig == im->gdes[ii].start_orig)
840 && (im->gdes[i].end_orig == im->gdes[ii].end_orig)
841 && (im->gdes[i].step_orig == im->gdes[ii].step_orig)) {
842 /* OK, the data is already there.
843 ** Just copy the header portion
844 */
845 im->gdes[i].start = im->gdes[ii].start;
846 im->gdes[i].end = im->gdes[ii].end;
847 im->gdes[i].step = im->gdes[ii].step;
848 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
849 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
850 im->gdes[i].data = im->gdes[ii].data;
851 im->gdes[i].data_first = 0;
852 skip = 1;
853 }
854 if (skip)
855 break;
856 }
857 if (!skip) {
858 unsigned long ft_step = im->gdes[i].step; /* ft_step will record what we got from fetch */
859 const char *rrd_daemon;
860 int status;
862 if (im->gdes[i].daemon[0] != 0)
863 rrd_daemon = im->gdes[i].daemon;
864 else
865 rrd_daemon = im->daemon_addr;
867 /* "daemon" may be NULL. ENV_RRDCACHED_ADDRESS is evaluated in that
868 * case. If "daemon" holds the same value as in the previous
869 * iteration, no actual new connection is established - the
870 * existing connection is re-used. */
871 rrdc_connect (rrd_daemon);
873 /* If connecting was successfull, use the daemon to query the data.
874 * If there is no connection, for example because no daemon address
875 * was specified, (try to) use the local file directly. */
876 if (rrdc_is_connected (rrd_daemon))
877 {
878 status = rrdc_fetch (im->gdes[i].rrd,
879 cf_to_string (im->gdes[i].cf),
880 &im->gdes[i].start,
881 &im->gdes[i].end,
882 &ft_step,
883 &im->gdes[i].ds_cnt,
884 &im->gdes[i].ds_namv,
885 &im->gdes[i].data);
886 if (status != 0)
887 return (status);
888 }
889 else
890 {
891 if ((rrd_fetch_fn(im->gdes[i].rrd,
892 im->gdes[i].cf,
893 &im->gdes[i].start,
894 &im->gdes[i].end,
895 &ft_step,
896 &im->gdes[i].ds_cnt,
897 &im->gdes[i].ds_namv,
898 &im->gdes[i].data)) == -1) {
899 return -1;
900 }
901 }
902 im->gdes[i].data_first = 1;
904 /* must reduce to at least im->step
905 otherwhise we end up with more data than we can handle in the
906 chart and visibility of data will be random */
907 im->gdes[i].step = max(im->gdes[i].step,im->step);
908 if (ft_step < im->gdes[i].step) {
909 reduce_data(im->gdes[i].cf_reduce,
910 ft_step,
911 &im->gdes[i].start,
912 &im->gdes[i].end,
913 &im->gdes[i].step,
914 &im->gdes[i].ds_cnt, &im->gdes[i].data);
915 } else {
916 im->gdes[i].step = ft_step;
917 }
918 }
920 /* lets see if the required data source is really there */
921 for (ii = 0; ii < (int) im->gdes[i].ds_cnt; ii++) {
922 if (strcmp(im->gdes[i].ds_namv[ii], im->gdes[i].ds_nam) == 0) {
923 im->gdes[i].ds = ii;
924 }
925 }
926 if (im->gdes[i].ds == -1) {
927 rrd_set_error("No DS called '%s' in '%s'",
928 im->gdes[i].ds_nam, im->gdes[i].rrd);
929 return -1;
930 }
932 }
933 return 0;
934 }
936 /* evaluate the expressions in the CDEF functions */
938 /*************************************************************
939 * CDEF stuff
940 *************************************************************/
942 long find_var_wrapper(
943 void *arg1,
944 char *key)
945 {
946 return find_var((image_desc_t *) arg1, key);
947 }
949 /* find gdes containing var*/
950 long find_var(
951 image_desc_t *im,
952 char *key)
953 {
954 long ii;
956 for (ii = 0; ii < im->gdes_c - 1; ii++) {
957 if ((im->gdes[ii].gf == GF_DEF
958 || im->gdes[ii].gf == GF_VDEF || im->gdes[ii].gf == GF_CDEF)
959 && (strcmp(im->gdes[ii].vname, key) == 0)) {
960 return ii;
961 }
962 }
963 return -1;
964 }
966 /* find the greatest common divisor for all the numbers
967 in the 0 terminated num array */
968 long lcd(
969 long *num)
970 {
971 long rest;
972 int i;
974 for (i = 0; num[i + 1] != 0; i++) {
975 do {
976 rest = num[i] % num[i + 1];
977 num[i] = num[i + 1];
978 num[i + 1] = rest;
979 } while (rest != 0);
980 num[i + 1] = num[i];
981 }
982 /* return i==0?num[i]:num[i-1]; */
983 return num[i];
984 }
986 /* run the rpn calculator on all the VDEF and CDEF arguments */
987 int data_calc(
988 image_desc_t *im)
989 {
991 int gdi;
992 int dataidx;
993 long *steparray, rpi;
994 int stepcnt;
995 time_t now;
996 rpnstack_t rpnstack;
998 rpnstack_init(&rpnstack);
1000 for (gdi = 0; gdi < im->gdes_c; gdi++) {
1001 /* Look for GF_VDEF and GF_CDEF in the same loop,
1002 * so CDEFs can use VDEFs and vice versa
1003 */
1004 switch (im->gdes[gdi].gf) {
1005 case GF_XPORT:
1006 break;
1007 case GF_SHIFT:{
1008 graph_desc_t *vdp = &im->gdes[im->gdes[gdi].vidx];
1010 /* remove current shift */
1011 vdp->start -= vdp->shift;
1012 vdp->end -= vdp->shift;
1014 /* vdef */
1015 if (im->gdes[gdi].shidx >= 0)
1016 vdp->shift = im->gdes[im->gdes[gdi].shidx].vf.val;
1017 /* constant */
1018 else
1019 vdp->shift = im->gdes[gdi].shval;
1021 /* normalize shift to multiple of consolidated step */
1022 vdp->shift = (vdp->shift / (long) vdp->step) * (long) vdp->step;
1024 /* apply shift */
1025 vdp->start += vdp->shift;
1026 vdp->end += vdp->shift;
1027 break;
1028 }
1029 case GF_VDEF:
1030 /* A VDEF has no DS. This also signals other parts
1031 * of rrdtool that this is a VDEF value, not a CDEF.
1032 */
1033 im->gdes[gdi].ds_cnt = 0;
1034 if (vdef_calc(im, gdi)) {
1035 rrd_set_error("Error processing VDEF '%s'",
1036 im->gdes[gdi].vname);
1037 rpnstack_free(&rpnstack);
1038 return -1;
1039 }
1040 break;
1041 case GF_CDEF:
1042 im->gdes[gdi].ds_cnt = 1;
1043 im->gdes[gdi].ds = 0;
1044 im->gdes[gdi].data_first = 1;
1045 im->gdes[gdi].start = 0;
1046 im->gdes[gdi].end = 0;
1047 steparray = NULL;
1048 stepcnt = 0;
1049 dataidx = -1;
1051 /* Find the variables in the expression.
1052 * - VDEF variables are substituted by their values
1053 * and the opcode is changed into OP_NUMBER.
1054 * - CDEF variables are analized for their step size,
1055 * the lowest common denominator of all the step
1056 * sizes of the data sources involved is calculated
1057 * and the resulting number is the step size for the
1058 * resulting data source.
1059 */
1060 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1061 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1062 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1063 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1065 if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
1066 #if 0
1067 printf
1068 ("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
1069 im->gdes[gdi].vname, im->gdes[ptr].vname);
1070 printf("DEBUG: value from vdef is %f\n",
1071 im->gdes[ptr].vf.val);
1072 #endif
1073 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
1074 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
1075 } else { /* normal variables and PREF(variables) */
1077 /* add one entry to the array that keeps track of the step sizes of the
1078 * data sources going into the CDEF. */
1079 if ((steparray =
1080 (long*)rrd_realloc(steparray,
1081 (++stepcnt +
1082 1) * sizeof(*steparray))) == NULL) {
1083 rrd_set_error("realloc steparray");
1084 rpnstack_free(&rpnstack);
1085 return -1;
1086 };
1088 steparray[stepcnt - 1] = im->gdes[ptr].step;
1090 /* adjust start and end of cdef (gdi) so
1091 * that it runs from the latest start point
1092 * to the earliest endpoint of any of the
1093 * rras involved (ptr)
1094 */
1096 if (im->gdes[gdi].start < im->gdes[ptr].start)
1097 im->gdes[gdi].start = im->gdes[ptr].start;
1099 if (im->gdes[gdi].end == 0 ||
1100 im->gdes[gdi].end > im->gdes[ptr].end)
1101 im->gdes[gdi].end = im->gdes[ptr].end;
1103 /* store pointer to the first element of
1104 * the rra providing data for variable,
1105 * further save step size and data source
1106 * count of this rra
1107 */
1108 im->gdes[gdi].rpnp[rpi].data =
1109 im->gdes[ptr].data + im->gdes[ptr].ds;
1110 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
1111 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
1113 /* backoff the *.data ptr; this is done so
1114 * rpncalc() function doesn't have to treat
1115 * the first case differently
1116 */
1117 } /* if ds_cnt != 0 */
1118 } /* if OP_VARIABLE */
1119 } /* loop through all rpi */
1121 /* move the data pointers to the correct period */
1122 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1123 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1124 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1125 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1126 long diff =
1127 im->gdes[gdi].start - im->gdes[ptr].start;
1129 if (diff > 0)
1130 im->gdes[gdi].rpnp[rpi].data +=
1131 (diff / im->gdes[ptr].step) *
1132 im->gdes[ptr].ds_cnt;
1133 }
1134 }
1136 if (steparray == NULL) {
1137 rrd_set_error("rpn expressions without DEF"
1138 " or CDEF variables are not supported");
1139 rpnstack_free(&rpnstack);
1140 return -1;
1141 }
1142 steparray[stepcnt] = 0;
1143 /* Now find the resulting step. All steps in all
1144 * used RRAs have to be visited
1145 */
1146 im->gdes[gdi].step = lcd(steparray);
1147 free(steparray);
1148 if ((im->gdes[gdi].data = (rrd_value_t*)malloc(((im->gdes[gdi].end -
1149 im->gdes[gdi].start)
1150 / im->gdes[gdi].step)
1151 * sizeof(double))) == NULL) {
1152 rrd_set_error("malloc im->gdes[gdi].data");
1153 rpnstack_free(&rpnstack);
1154 return -1;
1155 }
1157 /* Step through the new cdef results array and
1158 * calculate the values
1159 */
1160 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
1161 now <= im->gdes[gdi].end; now += im->gdes[gdi].step) {
1162 rpnp_t *rpnp = im->gdes[gdi].rpnp;
1164 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
1165 * in this case we are advancing by timesteps;
1166 * we use the fact that time_t is a synonym for long
1167 */
1168 if (rpn_calc(rpnp, &rpnstack, (long) now,
1169 im->gdes[gdi].data, ++dataidx) == -1) {
1170 /* rpn_calc sets the error string */
1171 rpnstack_free(&rpnstack);
1172 return -1;
1173 }
1174 } /* enumerate over time steps within a CDEF */
1175 break;
1176 default:
1177 continue;
1178 }
1179 } /* enumerate over CDEFs */
1180 rpnstack_free(&rpnstack);
1181 return 0;
1182 }
1184 /* from http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm */
1185 /* yes we are loosing precision by doing tos with floats instead of doubles
1186 but it seems more stable this way. */
1188 static int AlmostEqual2sComplement(
1189 float A,
1190 float B,
1191 int maxUlps)
1192 {
1194 int aInt = *(int *) &A;
1195 int bInt = *(int *) &B;
1196 int intDiff;
1198 /* Make sure maxUlps is non-negative and small enough that the
1199 default NAN won't compare as equal to anything. */
1201 /* assert(maxUlps > 0 && maxUlps < 4 * 1024 * 1024); */
1203 /* Make aInt lexicographically ordered as a twos-complement int */
1205 if (aInt < 0)
1206 aInt = 0x80000000l - aInt;
1208 /* Make bInt lexicographically ordered as a twos-complement int */
1210 if (bInt < 0)
1211 bInt = 0x80000000l - bInt;
1213 intDiff = abs(aInt - bInt);
1215 if (intDiff <= maxUlps)
1216 return 1;
1218 return 0;
1219 }
1221 /* massage data so, that we get one value for each x coordinate in the graph */
1222 int data_proc(
1223 image_desc_t *im)
1224 {
1225 long i, ii;
1226 double pixstep = (double) (im->end - im->start)
1227 / (double) im->xsize; /* how much time
1228 passes in one pixel */
1229 double paintval;
1230 double minval = DNAN, maxval = DNAN;
1232 unsigned long gr_time;
1234 /* memory for the processed data */
1235 for (i = 0; i < im->gdes_c; i++) {
1236 if ((im->gdes[i].gf == GF_LINE)
1237 || (im->gdes[i].gf == GF_AREA)
1238 || (im->gdes[i].gf == GF_TICK)
1239 || (im->gdes[i].gf == GF_GRAD)
1240 ) {
1241 if ((im->gdes[i].p_data = (rrd_value_t*)malloc((im->xsize + 1)
1242 * sizeof(rrd_value_t))) == NULL) {
1243 rrd_set_error("malloc data_proc");
1244 return -1;
1245 }
1246 }
1247 }
1249 for (i = 0; i < im->xsize; i++) { /* for each pixel */
1250 long vidx;
1252 gr_time = im->start + pixstep * i; /* time of the current step */
1253 paintval = 0.0;
1255 for (ii = 0; ii < im->gdes_c; ii++) {
1256 double value;
1258 switch (im->gdes[ii].gf) {
1259 case GF_LINE:
1260 case GF_AREA:
1261 case GF_GRAD:
1262 case GF_TICK:
1263 if (!im->gdes[ii].stack)
1264 paintval = 0.0;
1265 value = im->gdes[ii].yrule;
1266 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1267 /* The time of the data doesn't necessarily match
1268 ** the time of the graph. Beware.
1269 */
1270 vidx = im->gdes[ii].vidx;
1271 if (im->gdes[vidx].gf == GF_VDEF) {
1272 value = im->gdes[vidx].vf.val;
1273 } else
1274 if (((long int) gr_time >=
1275 (long int) im->gdes[vidx].start)
1276 && ((long int) gr_time <
1277 (long int) im->gdes[vidx].end)) {
1278 value = im->gdes[vidx].data[(unsigned long)
1279 floor((double)
1280 (gr_time -
1281 im->gdes[vidx].
1282 start)
1283 /
1284 im->gdes[vidx].step)
1285 * im->gdes[vidx].ds_cnt +
1286 im->gdes[vidx].ds];
1287 } else {
1288 value = DNAN;
1289 }
1290 };
1292 if (!isnan(value)) {
1293 paintval += value;
1294 im->gdes[ii].p_data[i] = paintval;
1295 /* GF_TICK: the data values are not
1296 ** relevant for min and max
1297 */
1298 if (finite(paintval) && im->gdes[ii].gf != GF_TICK) {
1299 if ((isnan(minval) || paintval < minval) &&
1300 !(im->logarithmic && paintval <= 0.0))
1301 minval = paintval;
1302 if (isnan(maxval) || paintval > maxval)
1303 maxval = paintval;
1304 }
1305 } else {
1306 im->gdes[ii].p_data[i] = DNAN;
1307 }
1308 break;
1309 case GF_STACK:
1310 rrd_set_error
1311 ("STACK should already be turned into LINE or AREA here");
1312 return -1;
1313 break;
1314 default:
1315 break;
1316 }
1317 }
1318 }
1320 /* if min or max have not been asigned a value this is because
1321 there was no data in the graph ... this is not good ...
1322 lets set these to dummy values then ... */
1324 if (im->logarithmic) {
1325 if (isnan(minval) || isnan(maxval) || maxval <= 0) {
1326 minval = 0.0; /* catching this right away below */
1327 maxval = 5.1;
1328 }
1329 /* in logarithm mode, where minval is smaller or equal
1330 to 0 make the beast just way smaller than maxval */
1331 if (minval <= 0) {
1332 minval = maxval / 10e8;
1333 }
1334 } else {
1335 if (isnan(minval) || isnan(maxval)) {
1336 minval = 0.0;
1337 maxval = 1.0;
1338 }
1339 }
1341 /* adjust min and max values given by the user */
1342 /* for logscale we add something on top */
1343 if (isnan(im->minval)
1344 || ((!im->rigid) && im->minval > minval)
1345 ) {
1346 if (im->logarithmic)
1347 im->minval = minval / 2.0;
1348 else
1349 im->minval = minval;
1350 }
1351 if (isnan(im->maxval)
1352 || (!im->rigid && im->maxval < maxval)
1353 ) {
1354 if (im->logarithmic)
1355 im->maxval = maxval * 2.0;
1356 else
1357 im->maxval = maxval;
1358 }
1360 /* make sure min is smaller than max */
1361 if (im->minval > im->maxval) {
1362 if (im->minval > 0)
1363 im->minval = 0.99 * im->maxval;
1364 else
1365 im->minval = 1.01 * im->maxval;
1366 }
1368 /* make sure min and max are not equal */
1369 if (AlmostEqual2sComplement(im->minval, im->maxval, 4)) {
1370 if (im->maxval > 0)
1371 im->maxval *= 1.01;
1372 else
1373 im->maxval *= 0.99;
1375 /* make sure min and max are not both zero */
1376 if (AlmostEqual2sComplement(im->maxval, 0, 4)) {
1377 im->maxval = 1.0;
1378 }
1379 }
1380 return 0;
1381 }
1383 static int find_first_weekday(void){
1384 static int first_weekday = -1;
1385 if (first_weekday == -1){
1386 #ifdef HAVE__NL_TIME_WEEK_1STDAY
1387 /* according to http://sourceware.org/ml/libc-locales/2009-q1/msg00011.html */
1388 long week_1stday_l = (long) nl_langinfo (_NL_TIME_WEEK_1STDAY);
1389 if (week_1stday_l == 19971130) first_weekday = 0; /* Sun */
1390 else if (week_1stday_l == 19971201) first_weekday = 1; /* Mon */
1391 else first_weekday = 1; /* we go for a monday default */
1392 #else
1393 first_weekday = 1;
1394 #endif
1395 }
1396 return first_weekday;
1397 }
1399 /* identify the point where the first gridline, label ... gets placed */
1401 time_t find_first_time(
1402 time_t start, /* what is the initial time */
1403 enum tmt_en baseint, /* what is the basic interval */
1404 long basestep /* how many if these do we jump a time */
1405 )
1406 {
1407 struct tm tm;
1409 localtime_r(&start, &tm);
1411 switch (baseint) {
1412 case TMT_SECOND:
1413 tm. tm_sec -= tm.tm_sec % basestep;
1415 break;
1416 case TMT_MINUTE:
1417 tm. tm_sec = 0;
1418 tm. tm_min -= tm.tm_min % basestep;
1420 break;
1421 case TMT_HOUR:
1422 tm. tm_sec = 0;
1423 tm. tm_min = 0;
1424 tm. tm_hour -= tm.tm_hour % basestep;
1426 break;
1427 case TMT_DAY:
1428 /* we do NOT look at the basestep for this ... */
1429 tm. tm_sec = 0;
1430 tm. tm_min = 0;
1431 tm. tm_hour = 0;
1433 break;
1434 case TMT_WEEK:
1435 /* we do NOT look at the basestep for this ... */
1436 tm. tm_sec = 0;
1437 tm. tm_min = 0;
1438 tm. tm_hour = 0;
1439 tm. tm_mday -= tm.tm_wday - find_first_weekday();
1441 if (tm.tm_wday == 0 && find_first_weekday() > 0)
1442 tm. tm_mday -= 7; /* we want the *previous* week */
1444 break;
1445 case TMT_MONTH:
1446 tm. tm_sec = 0;
1447 tm. tm_min = 0;
1448 tm. tm_hour = 0;
1449 tm. tm_mday = 1;
1450 tm. tm_mon -= tm.tm_mon % basestep;
1452 break;
1454 case TMT_YEAR:
1455 tm. tm_sec = 0;
1456 tm. tm_min = 0;
1457 tm. tm_hour = 0;
1458 tm. tm_mday = 1;
1459 tm. tm_mon = 0;
1460 tm. tm_year -= (
1461 tm.tm_year + 1900) %basestep;
1463 }
1464 return mktime(&tm);
1465 }
1467 /* identify the point where the next gridline, label ... gets placed */
1468 time_t find_next_time(
1469 time_t current, /* what is the initial time */
1470 enum tmt_en baseint, /* what is the basic interval */
1471 long basestep /* how many if these do we jump a time */
1472 )
1473 {
1474 struct tm tm;
1475 time_t madetime;
1477 localtime_r(¤t, &tm);
1479 int limit = 2;
1480 switch (baseint) {
1481 case TMT_SECOND: limit = 7200; break;
1482 case TMT_MINUTE: limit = 120; break;
1483 case TMT_HOUR: limit = 2; break;
1484 default: limit = 2; break;
1485 }
1486 do {
1487 switch (baseint) {
1488 case TMT_SECOND:
1489 tm. tm_sec += basestep;
1491 break;
1492 case TMT_MINUTE:
1493 tm. tm_min += basestep;
1495 break;
1496 case TMT_HOUR:
1497 tm. tm_hour += basestep;
1499 break;
1500 case TMT_DAY:
1501 tm. tm_mday += basestep;
1503 break;
1504 case TMT_WEEK:
1505 tm. tm_mday += 7 * basestep;
1507 break;
1508 case TMT_MONTH:
1509 tm. tm_mon += basestep;
1511 break;
1512 case TMT_YEAR:
1513 tm. tm_year += basestep;
1514 }
1515 madetime = mktime(&tm);
1516 } while (madetime == -1 && limit-- >= 0); /* this is necessary to skip impossible times
1517 like the daylight saving time skips */
1518 return madetime;
1520 }
1523 /* calculate values required for PRINT and GPRINT functions */
1525 int print_calc(
1526 image_desc_t *im)
1527 {
1528 long i, ii, validsteps;
1529 double printval;
1530 struct tm tmvdef;
1531 int graphelement = 0;
1532 long vidx;
1533 int max_ii;
1534 double magfact = -1;
1535 char *si_symb = "";
1536 char *percent_s;
1537 int prline_cnt = 0;
1539 /* wow initializing tmvdef is quite a task :-) */
1540 time_t now = time(NULL);
1542 localtime_r(&now, &tmvdef);
1543 for (i = 0; i < im->gdes_c; i++) {
1544 vidx = im->gdes[i].vidx;
1545 switch (im->gdes[i].gf) {
1546 case GF_PRINT:
1547 case GF_GPRINT:
1548 /* PRINT and GPRINT can now print VDEF generated values.
1549 * There's no need to do any calculations on them as these
1550 * calculations were already made.
1551 */
1552 if (im->gdes[vidx].gf == GF_VDEF) { /* simply use vals */
1553 printval = im->gdes[vidx].vf.val;
1554 localtime_r(&im->gdes[vidx].vf.when, &tmvdef);
1555 } else { /* need to calculate max,min,avg etcetera */
1556 max_ii = ((im->gdes[vidx].end - im->gdes[vidx].start)
1557 / im->gdes[vidx].step * im->gdes[vidx].ds_cnt);
1558 printval = DNAN;
1559 validsteps = 0;
1560 for (ii = im->gdes[vidx].ds;
1561 ii < max_ii; ii += im->gdes[vidx].ds_cnt) {
1562 if (!finite(im->gdes[vidx].data[ii]))
1563 continue;
1564 if (isnan(printval)) {
1565 printval = im->gdes[vidx].data[ii];
1566 validsteps++;
1567 continue;
1568 }
1570 switch (im->gdes[i].cf) {
1571 case CF_HWPREDICT:
1572 case CF_MHWPREDICT:
1573 case CF_DEVPREDICT:
1574 case CF_DEVSEASONAL:
1575 case CF_SEASONAL:
1576 case CF_AVERAGE:
1577 validsteps++;
1578 printval += im->gdes[vidx].data[ii];
1579 break;
1580 case CF_MINIMUM:
1581 printval = min(printval, im->gdes[vidx].data[ii]);
1582 break;
1583 case CF_FAILURES:
1584 case CF_MAXIMUM:
1585 printval = max(printval, im->gdes[vidx].data[ii]);
1586 break;
1587 case CF_LAST:
1588 printval = im->gdes[vidx].data[ii];
1589 }
1590 }
1591 if (im->gdes[i].cf == CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1592 if (validsteps > 1) {
1593 printval = (printval / validsteps);
1594 }
1595 }
1596 } /* prepare printval */
1598 if (!im->gdes[i].strftm && (percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
1599 /* Magfact is set to -1 upon entry to print_calc. If it
1600 * is still less than 0, then we need to run auto_scale.
1601 * Otherwise, put the value into the correct units. If
1602 * the value is 0, then do not set the symbol or magnification
1603 * so next the calculation will be performed again. */
1604 if (magfact < 0.0) {
1605 auto_scale(im, &printval, &si_symb, &magfact);
1606 if (printval == 0.0)
1607 magfact = -1.0;
1608 } else {
1609 printval /= magfact;
1610 }
1611 *(++percent_s) = 's';
1612 } else if (!im->gdes[i].strftm && strstr(im->gdes[i].format, "%s") != NULL) {
1613 auto_scale(im, &printval, &si_symb, &magfact);
1614 }
1616 if (im->gdes[i].gf == GF_PRINT) {
1617 rrd_infoval_t prline;
1619 if (im->gdes[i].strftm) {
1620 prline.u_str = (char*)malloc((FMT_LEG_LEN + 2) * sizeof(char));
1621 if (im->gdes[vidx].vf.never == 1) {
1622 time_clean(prline.u_str, im->gdes[i].format);
1623 } else {
1624 strftime(prline.u_str,
1625 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1626 }
1627 } else if (bad_format(im->gdes[i].format)) {
1628 rrd_set_error
1629 ("bad format for PRINT in '%s'", im->gdes[i].format);
1630 return -1;
1631 } else {
1632 prline.u_str =
1633 sprintf_alloc(im->gdes[i].format, printval, si_symb);
1634 }
1635 grinfo_push(im,
1636 sprintf_alloc
1637 ("print[%ld]", prline_cnt++), RD_I_STR, prline);
1638 free(prline.u_str);
1639 } else {
1640 /* GF_GPRINT */
1642 if (im->gdes[i].strftm) {
1643 if (im->gdes[vidx].vf.never == 1) {
1644 time_clean(im->gdes[i].legend, im->gdes[i].format);
1645 } else {
1646 strftime(im->gdes[i].legend,
1647 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1648 }
1649 } else {
1650 if (bad_format(im->gdes[i].format)) {
1651 rrd_set_error
1652 ("bad format for GPRINT in '%s'",
1653 im->gdes[i].format);
1654 return -1;
1655 }
1656 #ifdef HAVE_SNPRINTF
1657 snprintf(im->gdes[i].legend,
1658 FMT_LEG_LEN - 2,
1659 im->gdes[i].format, printval, si_symb);
1660 #else
1661 sprintf(im->gdes[i].legend,
1662 im->gdes[i].format, printval, si_symb);
1663 #endif
1664 }
1665 graphelement = 1;
1666 }
1667 break;
1668 case GF_LINE:
1669 case GF_AREA:
1670 case GF_GRAD:
1671 case GF_TICK:
1672 graphelement = 1;
1673 break;
1674 case GF_HRULE:
1675 if (isnan(im->gdes[i].yrule)) { /* we must set this here or the legend printer can not decide to print the legend */
1676 im->gdes[i].yrule = im->gdes[vidx].vf.val;
1677 };
1678 graphelement = 1;
1679 break;
1680 case GF_VRULE:
1681 if (im->gdes[i].xrule == 0) { /* again ... the legend printer needs it */
1682 im->gdes[i].xrule = im->gdes[vidx].vf.when;
1683 };
1684 graphelement = 1;
1685 break;
1686 case GF_COMMENT:
1687 case GF_TEXTALIGN:
1688 case GF_DEF:
1689 case GF_CDEF:
1690 case GF_VDEF:
1691 #ifdef WITH_PIECHART
1692 case GF_PART:
1693 #endif
1694 case GF_SHIFT:
1695 case GF_XPORT:
1696 break;
1697 case GF_STACK:
1698 rrd_set_error
1699 ("STACK should already be turned into LINE or AREA here");
1700 return -1;
1701 break;
1702 }
1703 }
1704 return graphelement;
1705 }
1709 /* place legends with color spots */
1710 int leg_place(
1711 image_desc_t *im,
1712 int calc_width)
1713 {
1714 /* graph labels */
1715 int interleg = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1716 int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1717 int fill = 0, fill_last;
1718 double legendwidth; // = im->ximg - 2 * border;
1719 int leg_c = 0;
1720 double leg_x = border;
1721 int leg_y = 0; //im->yimg;
1722 int leg_y_prev = 0; // im->yimg;
1723 int leg_cc;
1724 double glue = 0;
1725 int i, ii, mark = 0;
1726 char default_txtalign = TXA_JUSTIFIED; /*default line orientation */
1727 int *legspace;
1728 char *tab;
1729 char saved_legend[FMT_LEG_LEN + 5];
1731 if(calc_width){
1732 legendwidth = 0;
1733 }
1734 else{
1735 legendwidth = im->legendwidth - 2 * border;
1736 }
1739 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
1740 if ((legspace = (int*)malloc(im->gdes_c * sizeof(int))) == NULL) {
1741 rrd_set_error("malloc for legspace");
1742 return -1;
1743 }
1745 for (i = 0; i < im->gdes_c; i++) {
1746 char prt_fctn; /*special printfunctions */
1747 if(calc_width){
1748 strcpy(saved_legend, im->gdes[i].legend);
1749 }
1751 fill_last = fill;
1752 /* hide legends for rules which are not displayed */
1753 if (im->gdes[i].gf == GF_TEXTALIGN) {
1754 default_txtalign = im->gdes[i].txtalign;
1755 }
1757 if (!(im->extra_flags & FORCE_RULES_LEGEND)) {
1758 if (im->gdes[i].gf == GF_HRULE
1759 && (im->gdes[i].yrule <
1760 im->minval || im->gdes[i].yrule > im->maxval))
1761 im->gdes[i].legend[0] = '\0';
1762 if (im->gdes[i].gf == GF_VRULE
1763 && (im->gdes[i].xrule <
1764 im->start || im->gdes[i].xrule > im->end))
1765 im->gdes[i].legend[0] = '\0';
1766 }
1768 /* turn \\t into tab */
1769 while ((tab = strstr(im->gdes[i].legend, "\\t"))) {
1770 memmove(tab, tab + 1, strlen(tab));
1771 tab[0] = (char) 9;
1772 }
1774 leg_cc = strlen(im->gdes[i].legend);
1775 /* is there a controle code at the end of the legend string ? */
1776 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc - 2] == '\\') {
1777 prt_fctn = im->gdes[i].legend[leg_cc - 1];
1778 leg_cc -= 2;
1779 im->gdes[i].legend[leg_cc] = '\0';
1780 } else {
1781 prt_fctn = '\0';
1782 }
1783 /* only valid control codes */
1784 if (prt_fctn != 'l' && prt_fctn != 'n' && /* a synonym for l */
1785 prt_fctn != 'r' &&
1786 prt_fctn != 'j' &&
1787 prt_fctn != 'c' &&
1788 prt_fctn != 'u' &&
1789 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
1790 free(legspace);
1791 rrd_set_error
1792 ("Unknown control code at the end of '%s\\%c'",
1793 im->gdes[i].legend, prt_fctn);
1794 return -1;
1795 }
1796 /* \n -> \l */
1797 if (prt_fctn == 'n') {
1798 prt_fctn = 'l';
1799 }
1801 /* remove exess space from the end of the legend for \g */
1802 while (prt_fctn == 'g' &&
1803 leg_cc > 0 && im->gdes[i].legend[leg_cc - 1] == ' ') {
1804 leg_cc--;
1805 im->gdes[i].legend[leg_cc] = '\0';
1806 }
1808 if (leg_cc != 0) {
1810 /* no interleg space if string ends in \g */
1811 legspace[i] = (prt_fctn == 'g' ? 0 : interleg);
1812 if (fill > 0) {
1813 fill += legspace[i];
1814 }
1815 fill +=
1816 gfx_get_text_width(im,
1817 fill + border,
1818 im->
1819 text_prop
1820 [TEXT_PROP_LEGEND].
1821 font_desc,
1822 im->tabwidth, im->gdes[i].legend);
1823 leg_c++;
1824 } else {
1825 legspace[i] = 0;
1826 }
1827 /* who said there was a special tag ... ? */
1828 if (prt_fctn == 'g') {
1829 prt_fctn = '\0';
1830 }
1832 if (prt_fctn == '\0') {
1833 if(calc_width && (fill > legendwidth)){
1834 legendwidth = fill;
1835 }
1836 if (i == im->gdes_c - 1 || fill > legendwidth) {
1837 /* just one legend item is left right or center */
1838 switch (default_txtalign) {
1839 case TXA_RIGHT:
1840 prt_fctn = 'r';
1841 break;
1842 case TXA_CENTER:
1843 prt_fctn = 'c';
1844 break;
1845 case TXA_JUSTIFIED:
1846 prt_fctn = 'j';
1847 break;
1848 default:
1849 prt_fctn = 'l';
1850 break;
1851 }
1852 }
1853 /* is it time to place the legends ? */
1854 if (fill > legendwidth) {
1855 if (leg_c > 1) {
1856 /* go back one */
1857 i--;
1858 fill = fill_last;
1859 leg_c--;
1860 }
1861 }
1862 if (leg_c == 1 && prt_fctn == 'j') {
1863 prt_fctn = 'l';
1864 }
1865 }
1867 if (prt_fctn != '\0') {
1868 leg_x = border;
1869 if (leg_c >= 2 && prt_fctn == 'j') {
1870 glue = (double)(legendwidth - fill) / (double)(leg_c - 1);
1871 } else {
1872 glue = 0;
1873 }
1874 if (prt_fctn == 'c')
1875 leg_x = border + (double)(legendwidth - fill) / 2.0;
1876 if (prt_fctn == 'r')
1877 leg_x = legendwidth - fill + border;
1878 for (ii = mark; ii <= i; ii++) {
1879 if (im->gdes[ii].legend[0] == '\0')
1880 continue; /* skip empty legends */
1881 im->gdes[ii].leg_x = leg_x;
1882 im->gdes[ii].leg_y = leg_y + border;
1883 leg_x +=
1884 (double)gfx_get_text_width(im, leg_x,
1885 im->
1886 text_prop
1887 [TEXT_PROP_LEGEND].
1888 font_desc,
1889 im->tabwidth, im->gdes[ii].legend)
1890 +(double)legspace[ii]
1891 + glue;
1892 }
1893 leg_y_prev = leg_y;
1894 if (leg_x > border || prt_fctn == 's')
1895 leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1896 if (prt_fctn == 's')
1897 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
1898 if (prt_fctn == 'u')
1899 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size *1.8;
1901 if(calc_width && (fill > legendwidth)){
1902 legendwidth = fill;
1903 }
1904 fill = 0;
1905 leg_c = 0;
1906 mark = ii;
1907 }
1909 if(calc_width){
1910 strcpy(im->gdes[i].legend, saved_legend);
1911 }
1912 }
1914 if(calc_width){
1915 im->legendwidth = legendwidth + 2 * border;
1916 }
1917 else{
1918 im->legendheight = leg_y + border * 0.6;
1919 }
1920 free(legspace);
1921 }
1922 return 0;
1923 }
1925 /* create a grid on the graph. it determines what to do
1926 from the values of xsize, start and end */
1928 /* the xaxis labels are determined from the number of seconds per pixel
1929 in the requested graph */
1931 int calc_horizontal_grid(
1932 image_desc_t
1933 *im)
1934 {
1935 double range;
1936 double scaledrange;
1937 int pixel, i;
1938 int gridind = 0;
1939 int decimals, fractionals;
1941 im->ygrid_scale.labfact = 2;
1942 range = im->maxval - im->minval;
1943 scaledrange = range / im->magfact;
1944 /* does the scale of this graph make it impossible to put lines
1945 on it? If so, give up. */
1946 if (isnan(scaledrange)) {
1947 return 0;
1948 }
1950 /* find grid spaceing */
1951 pixel = 1;
1952 if (isnan(im->ygridstep)) {
1953 if (im->extra_flags & ALTYGRID) {
1954 /* find the value with max number of digits. Get number of digits */
1955 decimals =
1956 ceil(log10
1957 (max(fabs(im->maxval), fabs(im->minval)) *
1958 im->viewfactor / im->magfact));
1959 if (decimals <= 0) /* everything is small. make place for zero */
1960 decimals = 1;
1961 im->ygrid_scale.gridstep =
1962 pow((double) 10,
1963 floor(log10(range * im->viewfactor / im->magfact))) /
1964 im->viewfactor * im->magfact;
1965 if (im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1966 im->ygrid_scale.gridstep = 0.1;
1967 /* should have at least 5 lines but no more then 15 */
1968 if (range / im->ygrid_scale.gridstep < 5
1969 && im->ygrid_scale.gridstep >= 30)
1970 im->ygrid_scale.gridstep /= 10;
1971 if (range / im->ygrid_scale.gridstep > 15)
1972 im->ygrid_scale.gridstep *= 10;
1973 if (range / im->ygrid_scale.gridstep > 5) {
1974 im->ygrid_scale.labfact = 1;
1975 if (range / im->ygrid_scale.gridstep > 8
1976 || im->ygrid_scale.gridstep <
1977 1.8 * im->text_prop[TEXT_PROP_AXIS].size)
1978 im->ygrid_scale.labfact = 2;
1979 } else {
1980 im->ygrid_scale.gridstep /= 5;
1981 im->ygrid_scale.labfact = 5;
1982 }
1983 fractionals =
1984 floor(log10
1985 (im->ygrid_scale.gridstep *
1986 (double) im->ygrid_scale.labfact * im->viewfactor /
1987 im->magfact));
1988 if (fractionals < 0) { /* small amplitude. */
1989 int len = decimals - fractionals + 1;
1991 if (im->unitslength < len + 2)
1992 im->unitslength = len + 2;
1993 sprintf(im->ygrid_scale.labfmt,
1994 "%%%d.%df%s", len,
1995 -fractionals, (im->symbol != ' ' ? " %c" : ""));
1996 } else {
1997 int len = decimals + 1;
1999 if (im->unitslength < len + 2)
2000 im->unitslength = len + 2;
2001 sprintf(im->ygrid_scale.labfmt,
2002 "%%%d.0f%s", len, (im->symbol != ' ' ? " %c" : ""));
2003 }
2004 } else { /* classic rrd grid */
2005 for (i = 0; ylab[i].grid > 0; i++) {
2006 pixel = im->ysize / (scaledrange / ylab[i].grid);
2007 gridind = i;
2008 if (pixel >= 5)
2009 break;
2010 }
2012 for (i = 0; i < 4; i++) {
2013 if (pixel * ylab[gridind].lfac[i] >=
2014 1.8 * im->text_prop[TEXT_PROP_AXIS].size) {
2015 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
2016 break;
2017 }
2018 }
2020 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
2021 }
2022 } else {
2023 im->ygrid_scale.gridstep = im->ygridstep;
2024 im->ygrid_scale.labfact = im->ylabfact;
2025 }
2026 return 1;
2027 }
2029 int draw_horizontal_grid(
2030 image_desc_t
2031 *im)
2032 {
2033 int i;
2034 double scaledstep;
2035 char graph_label[100];
2036 int nlabels = 0;
2037 double X0 = im->xorigin;
2038 double X1 = im->xorigin + im->xsize;
2039 int sgrid = (int) (im->minval / im->ygrid_scale.gridstep - 1);
2040 int egrid = (int) (im->maxval / im->ygrid_scale.gridstep + 1);
2041 double MaxY;
2042 double second_axis_magfact = 0;
2043 char *second_axis_symb = "";
2045 scaledstep =
2046 im->ygrid_scale.gridstep /
2047 (double) im->magfact * (double) im->viewfactor;
2048 MaxY = scaledstep * (double) egrid;
2049 for (i = sgrid; i <= egrid; i++) {
2050 double Y0 = ytr(im,
2051 im->ygrid_scale.gridstep * i);
2052 double YN = ytr(im,
2053 im->ygrid_scale.gridstep * (i + 1));
2055 if (floor(Y0 + 0.5) >=
2056 im->yorigin - im->ysize && floor(Y0 + 0.5) <= im->yorigin) {
2057 /* Make sure at least 2 grid labels are shown, even if it doesn't agree
2058 with the chosen settings. Add a label if required by settings, or if
2059 there is only one label so far and the next grid line is out of bounds. */
2060 if (i % im->ygrid_scale.labfact == 0
2061 || (nlabels == 1
2062 && (YN < im->yorigin - im->ysize || YN > im->yorigin))) {
2063 if (im->symbol == ' ') {
2064 if (im->extra_flags & ALTYGRID) {
2065 sprintf(graph_label,
2066 im->ygrid_scale.labfmt,
2067 scaledstep * (double) i);
2068 } else {
2069 if (MaxY < 10) {
2070 sprintf(graph_label, "%4.1f",
2071 scaledstep * (double) i);
2072 } else {
2073 sprintf(graph_label, "%4.0f",
2074 scaledstep * (double) i);
2075 }
2076 }
2077 } else {
2078 char sisym = (i == 0 ? ' ' : im->symbol);
2080 if (im->extra_flags & ALTYGRID) {
2081 sprintf(graph_label,
2082 im->ygrid_scale.labfmt,
2083 scaledstep * (double) i, sisym);
2084 } else {
2085 if (MaxY < 10) {
2086 sprintf(graph_label, "%4.1f %c",
2087 scaledstep * (double) i, sisym);
2088 } else {
2089 sprintf(graph_label, "%4.0f %c",
2090 scaledstep * (double) i, sisym);
2091 }
2092 }
2093 }
2094 nlabels++;
2095 if (im->second_axis_scale != 0){
2096 char graph_label_right[100];
2097 double sval = im->ygrid_scale.gridstep*(double)i*im->second_axis_scale+im->second_axis_shift;
2098 if (im->second_axis_format[0] == '\0'){
2099 if (!second_axis_magfact){
2100 double dummy = im->ygrid_scale.gridstep*(double)(sgrid+egrid)/2.0*im->second_axis_scale+im->second_axis_shift;
2101 auto_scale(im,&dummy,&second_axis_symb,&second_axis_magfact);
2102 }
2103 sval /= second_axis_magfact;
2105 if(MaxY < 10) {
2106 sprintf(graph_label_right,"%5.1f %s",sval,second_axis_symb);
2107 } else {
2108 sprintf(graph_label_right,"%5.0f %s",sval,second_axis_symb);
2109 }
2110 }
2111 else {
2112 sprintf(graph_label_right,im->second_axis_format,sval);
2113 }
2114 gfx_text ( im,
2115 X1+7, Y0,
2116 im->graph_col[GRC_FONT],
2117 im->text_prop[TEXT_PROP_AXIS].font_desc,
2118 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2119 graph_label_right );
2120 }
2122 gfx_text(im,
2123 X0 -
2124 im->
2125 text_prop[TEXT_PROP_AXIS].
2126 size, Y0,
2127 im->graph_col[GRC_FONT],
2128 im->
2129 text_prop[TEXT_PROP_AXIS].
2130 font_desc,
2131 im->tabwidth, 0.0,
2132 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2133 gfx_line(im, X0 - 2, Y0, X0, Y0,
2134 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2135 gfx_line(im, X1, Y0, X1 + 2, Y0,
2136 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2137 gfx_dashed_line(im, X0 - 2, Y0,
2138 X1 + 2, Y0,
2139 MGRIDWIDTH,
2140 im->
2141 graph_col
2142 [GRC_MGRID],
2143 im->grid_dash_on, im->grid_dash_off);
2144 } else if (!(im->extra_flags & NOMINOR)) {
2145 gfx_line(im,
2146 X0 - 2, Y0,
2147 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2148 gfx_line(im, X1, Y0, X1 + 2, Y0,
2149 GRIDWIDTH, im->graph_col[GRC_GRID]);
2150 gfx_dashed_line(im, X0 - 1, Y0,
2151 X1 + 1, Y0,
2152 GRIDWIDTH,
2153 im->
2154 graph_col[GRC_GRID],
2155 im->grid_dash_on, im->grid_dash_off);
2156 }
2157 }
2158 }
2159 return 1;
2160 }
2162 /* this is frexp for base 10 */
2163 double frexp10(
2164 double,
2165 double *);
2166 double frexp10(
2167 double x,
2168 double *e)
2169 {
2170 double mnt;
2171 int iexp;
2173 iexp = floor(log((double)fabs(x)) / log((double)10));
2174 mnt = x / pow(10.0, iexp);
2175 if (mnt >= 10.0) {
2176 iexp++;
2177 mnt = x / pow(10.0, iexp);
2178 }
2179 *e = iexp;
2180 return mnt;
2181 }
2184 /* logaritmic horizontal grid */
2185 int horizontal_log_grid(
2186 image_desc_t
2187 *im)
2188 {
2189 double yloglab[][10] = {
2190 {
2191 1.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0,
2192 0.0, 0.0, 0.0}, {
2193 1.0, 5.0, 10., 0.0, 0.0, 0.0, 0.0,
2194 0.0, 0.0, 0.0}, {
2195 1.0, 2.0, 5.0, 7.0, 10., 0.0, 0.0,
2196 0.0, 0.0, 0.0}, {
2197 1.0, 2.0, 4.0,
2198 6.0, 8.0, 10.,
2199 0.0,
2200 0.0, 0.0, 0.0}, {
2201 1.0,
2202 2.0,
2203 3.0,
2204 4.0,
2205 5.0,
2206 6.0,
2207 7.0,
2208 8.0,
2209 9.0,
2210 10.},
2211 {
2212 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* last line */
2213 };
2214 int i, j, val_exp, min_exp;
2215 double nex; /* number of decades in data */
2216 double logscale; /* scale in logarithmic space */
2217 int exfrac = 1; /* decade spacing */
2218 int mid = -1; /* row in yloglab for major grid */
2219 double mspac; /* smallest major grid spacing (pixels) */
2220 int flab; /* first value in yloglab to use */
2221 double value, tmp, pre_value;
2222 double X0, X1, Y0;
2223 char graph_label[100];
2225 nex = log10(im->maxval / im->minval);
2226 logscale = im->ysize / nex;
2227 /* major spacing for data with high dynamic range */
2228 while (logscale * exfrac < 3 * im->text_prop[TEXT_PROP_LEGEND].size) {
2229 if (exfrac == 1)
2230 exfrac = 3;
2231 else
2232 exfrac += 3;
2233 }
2235 /* major spacing for less dynamic data */
2236 do {
2237 /* search best row in yloglab */
2238 mid++;
2239 for (i = 0; yloglab[mid][i + 1] < 10.0; i++);
2240 mspac = logscale * log10(10.0 / yloglab[mid][i]);
2241 }
2242 while (mspac >
2243 2 * im->text_prop[TEXT_PROP_LEGEND].size && yloglab[mid][0] > 0);
2244 if (mid)
2245 mid--;
2246 /* find first value in yloglab */
2247 for (flab = 0;
2248 yloglab[mid][flab] < 10
2249 && frexp10(im->minval, &tmp) > yloglab[mid][flab]; flab++);
2250 if (yloglab[mid][flab] == 10.0) {
2251 tmp += 1.0;
2252 flab = 0;
2253 }
2254 val_exp = tmp;
2255 if (val_exp % exfrac)
2256 val_exp += abs(-val_exp % exfrac);
2257 X0 = im->xorigin;
2258 X1 = im->xorigin + im->xsize;
2259 /* draw grid */
2260 pre_value = DNAN;
2261 while (1) {
2263 value = yloglab[mid][flab] * pow(10.0, val_exp);
2264 if (AlmostEqual2sComplement(value, pre_value, 4))
2265 break; /* it seems we are not converging */
2266 pre_value = value;
2267 Y0 = ytr(im, value);
2268 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2269 break;
2270 /* major grid line */
2271 gfx_line(im,
2272 X0 - 2, Y0, X0, Y0, MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2273 gfx_line(im, X1, Y0, X1 + 2, Y0,
2274 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2275 gfx_dashed_line(im, X0 - 2, Y0,
2276 X1 + 2, Y0,
2277 MGRIDWIDTH,
2278 im->
2279 graph_col
2280 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2281 /* label */
2282 if (im->extra_flags & FORCE_UNITS_SI) {
2283 int scale;
2284 double pvalue;
2285 char symbol;
2287 scale = floor(val_exp / 3.0);
2288 if (value >= 1.0)
2289 pvalue = pow(10.0, val_exp % 3);
2290 else
2291 pvalue = pow(10.0, ((val_exp + 1) % 3) + 2);
2292 pvalue *= yloglab[mid][flab];
2293 if (((scale + si_symbcenter) < (int) sizeof(si_symbol))
2294 && ((scale + si_symbcenter) >= 0))
2295 symbol = si_symbol[scale + si_symbcenter];
2296 else
2297 symbol = '?';
2298 sprintf(graph_label, "%3.0f %c", pvalue, symbol);
2299 } else {
2300 sprintf(graph_label, "%3.0e", value);
2301 }
2302 if (im->second_axis_scale != 0){
2303 char graph_label_right[100];
2304 double sval = value*im->second_axis_scale+im->second_axis_shift;
2305 if (im->second_axis_format[0] == '\0'){
2306 if (im->extra_flags & FORCE_UNITS_SI) {
2307 double mfac = 1;
2308 char *symb = "";
2309 auto_scale(im,&sval,&symb,&mfac);
2310 sprintf(graph_label_right,"%4.0f %s", sval,symb);
2311 }
2312 else {
2313 sprintf(graph_label_right,"%3.0e", sval);
2314 }
2315 }
2316 else {
2317 sprintf(graph_label_right,im->second_axis_format,sval,"");
2318 }
2320 gfx_text ( im,
2321 X1+7, Y0,
2322 im->graph_col[GRC_FONT],
2323 im->text_prop[TEXT_PROP_AXIS].font_desc,
2324 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2325 graph_label_right );
2326 }
2328 gfx_text(im,
2329 X0 -
2330 im->
2331 text_prop[TEXT_PROP_AXIS].
2332 size, Y0,
2333 im->graph_col[GRC_FONT],
2334 im->
2335 text_prop[TEXT_PROP_AXIS].
2336 font_desc,
2337 im->tabwidth, 0.0,
2338 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2339 /* minor grid */
2340 if (mid < 4 && exfrac == 1) {
2341 /* find first and last minor line behind current major line
2342 * i is the first line and j tha last */
2343 if (flab == 0) {
2344 min_exp = val_exp - 1;
2345 for (i = 1; yloglab[mid][i] < 10.0; i++);
2346 i = yloglab[mid][i - 1] + 1;
2347 j = 10;
2348 } else {
2349 min_exp = val_exp;
2350 i = yloglab[mid][flab - 1] + 1;
2351 j = yloglab[mid][flab];
2352 }
2354 /* draw minor lines below current major line */
2355 for (; i < j; i++) {
2357 value = i * pow(10.0, min_exp);
2358 if (value < im->minval)
2359 continue;
2360 Y0 = ytr(im, value);
2361 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2362 break;
2363 /* draw lines */
2364 gfx_line(im,
2365 X0 - 2, Y0,
2366 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2367 gfx_line(im, X1, Y0, X1 + 2, Y0,
2368 GRIDWIDTH, im->graph_col[GRC_GRID]);
2369 gfx_dashed_line(im, X0 - 1, Y0,
2370 X1 + 1, Y0,
2371 GRIDWIDTH,
2372 im->
2373 graph_col[GRC_GRID],
2374 im->grid_dash_on, im->grid_dash_off);
2375 }
2376 } else if (exfrac > 1) {
2377 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2378 value = pow(10.0, i);
2379 if (value < im->minval)
2380 continue;
2381 Y0 = ytr(im, value);
2382 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2383 break;
2384 /* draw lines */
2385 gfx_line(im,
2386 X0 - 2, Y0,
2387 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2388 gfx_line(im, X1, Y0, X1 + 2, Y0,
2389 GRIDWIDTH, im->graph_col[GRC_GRID]);
2390 gfx_dashed_line(im, X0 - 1, Y0,
2391 X1 + 1, Y0,
2392 GRIDWIDTH,
2393 im->
2394 graph_col[GRC_GRID],
2395 im->grid_dash_on, im->grid_dash_off);
2396 }
2397 }
2399 /* next decade */
2400 if (yloglab[mid][++flab] == 10.0) {
2401 flab = 0;
2402 val_exp += exfrac;
2403 }
2404 }
2406 /* draw minor lines after highest major line */
2407 if (mid < 4 && exfrac == 1) {
2408 /* find first and last minor line below current major line
2409 * i is the first line and j tha last */
2410 if (flab == 0) {
2411 min_exp = val_exp - 1;
2412 for (i = 1; yloglab[mid][i] < 10.0; i++);
2413 i = yloglab[mid][i - 1] + 1;
2414 j = 10;
2415 } else {
2416 min_exp = val_exp;
2417 i = yloglab[mid][flab - 1] + 1;
2418 j = yloglab[mid][flab];
2419 }
2421 /* draw minor lines below current major line */
2422 for (; i < j; i++) {
2424 value = i * pow(10.0, min_exp);
2425 if (value < im->minval)
2426 continue;
2427 Y0 = ytr(im, value);
2428 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2429 break;
2430 /* draw lines */
2431 gfx_line(im,
2432 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2433 gfx_line(im, X1, Y0, X1 + 2, Y0,
2434 GRIDWIDTH, im->graph_col[GRC_GRID]);
2435 gfx_dashed_line(im, X0 - 1, Y0,
2436 X1 + 1, Y0,
2437 GRIDWIDTH,
2438 im->
2439 graph_col[GRC_GRID],
2440 im->grid_dash_on, im->grid_dash_off);
2441 }
2442 }
2443 /* fancy minor gridlines */
2444 else if (exfrac > 1) {
2445 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2446 value = pow(10.0, i);
2447 if (value < im->minval)
2448 continue;
2449 Y0 = ytr(im, value);
2450 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2451 break;
2452 /* draw lines */
2453 gfx_line(im,
2454 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2455 gfx_line(im, X1, Y0, X1 + 2, Y0,
2456 GRIDWIDTH, im->graph_col[GRC_GRID]);
2457 gfx_dashed_line(im, X0 - 1, Y0,
2458 X1 + 1, Y0,
2459 GRIDWIDTH,
2460 im->
2461 graph_col[GRC_GRID],
2462 im->grid_dash_on, im->grid_dash_off);
2463 }
2464 }
2466 return 1;
2467 }
2470 void vertical_grid(
2471 image_desc_t *im)
2472 {
2473 int xlab_sel; /* which sort of label and grid ? */
2474 time_t ti, tilab, timajor;
2475 long factor;
2476 char graph_label[100];
2477 double X0, Y0, Y1; /* points for filled graph and more */
2478 struct tm tm;
2480 /* the type of time grid is determined by finding
2481 the number of seconds per pixel in the graph */
2482 if (im->xlab_user.minsec == -1) {
2483 factor = (im->end - im->start) / im->xsize;
2484 xlab_sel = 0;
2485 while (xlab[xlab_sel + 1].minsec !=
2486 -1 && xlab[xlab_sel + 1].minsec <= factor) {
2487 xlab_sel++;
2488 } /* pick the last one */
2489 while (xlab[xlab_sel - 1].minsec ==
2490 xlab[xlab_sel].minsec
2491 && xlab[xlab_sel].length > (im->end - im->start)) {
2492 xlab_sel--;
2493 } /* go back to the smallest size */
2494 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
2495 im->xlab_user.gridst = xlab[xlab_sel].gridst;
2496 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
2497 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
2498 im->xlab_user.labtm = xlab[xlab_sel].labtm;
2499 im->xlab_user.labst = xlab[xlab_sel].labst;
2500 im->xlab_user.precis = xlab[xlab_sel].precis;
2501 im->xlab_user.stst = xlab[xlab_sel].stst;
2502 }
2504 /* y coords are the same for every line ... */
2505 Y0 = im->yorigin;
2506 Y1 = im->yorigin - im->ysize;
2507 /* paint the minor grid */
2508 if (!(im->extra_flags & NOMINOR)) {
2509 for (ti = find_first_time(im->start,
2510 im->
2511 xlab_user.
2512 gridtm,
2513 im->
2514 xlab_user.
2515 gridst),
2516 timajor =
2517 find_first_time(im->start,
2518 im->xlab_user.
2519 mgridtm,
2520 im->xlab_user.
2521 mgridst);
2522 ti < im->end && ti != -1;
2523 ti =
2524 find_next_time(ti, im->xlab_user.gridtm, im->xlab_user.gridst)
2525 ) {
2526 /* are we inside the graph ? */
2527 if (ti < im->start || ti > im->end)
2528 continue;
2529 while (timajor < ti && timajor != -1) {
2530 timajor = find_next_time(timajor,
2531 im->
2532 xlab_user.
2533 mgridtm, im->xlab_user.mgridst);
2534 }
2535 if (timajor == -1) break; /* fail in case of problems with time increments */
2536 if (ti == timajor)
2537 continue; /* skip as falls on major grid line */
2538 X0 = xtr(im, ti);
2539 gfx_line(im, X0, Y1 - 2, X0, Y1,
2540 GRIDWIDTH, im->graph_col[GRC_GRID]);
2541 gfx_line(im, X0, Y0, X0, Y0 + 2,
2542 GRIDWIDTH, im->graph_col[GRC_GRID]);
2543 gfx_dashed_line(im, X0, Y0 + 1, X0,
2544 Y1 - 1, GRIDWIDTH,
2545 im->
2546 graph_col[GRC_GRID],
2547 im->grid_dash_on, im->grid_dash_off);
2548 }
2549 }
2551 /* paint the major grid */
2552 for (ti = find_first_time(im->start,
2553 im->
2554 xlab_user.
2555 mgridtm,
2556 im->
2557 xlab_user.
2558 mgridst);
2559 ti < im->end && ti != -1;
2560 ti = find_next_time(ti, im->xlab_user.mgridtm, im->xlab_user.mgridst)
2561 ) {
2562 /* are we inside the graph ? */
2563 if (ti < im->start || ti > im->end)
2564 continue;
2565 X0 = xtr(im, ti);
2566 gfx_line(im, X0, Y1 - 2, X0, Y1,
2567 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2568 gfx_line(im, X0, Y0, X0, Y0 + 3,
2569 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2570 gfx_dashed_line(im, X0, Y0 + 3, X0,
2571 Y1 - 2, MGRIDWIDTH,
2572 im->
2573 graph_col
2574 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2575 }
2576 /* paint the labels below the graph */
2577 for (ti =
2578 find_first_time(im->start -
2579 im->xlab_user.
2580 precis / 2,
2581 im->xlab_user.
2582 labtm,
2583 im->xlab_user.
2584 labst);
2585 (ti <=
2586 im->end -
2587 im->xlab_user.precis / 2) && ti != -1;
2588 ti = find_next_time(ti, im->xlab_user.labtm, im->xlab_user.labst)
2589 ) {
2590 tilab = ti + im->xlab_user.precis / 2; /* correct time for the label */
2591 /* are we inside the graph ? */
2592 if (tilab < im->start || tilab > im->end)
2593 continue;
2594 #if HAVE_STRFTIME
2595 localtime_r(&tilab, &tm);
2596 strftime(graph_label, 99, im->xlab_user.stst, &tm);
2597 #else
2598 # error "your libc has no strftime I guess we'll abort the exercise here."
2599 #endif
2600 gfx_text(im,
2601 xtr(im, tilab),
2602 Y0 + 3,
2603 im->graph_col[GRC_FONT],
2604 im->
2605 text_prop[TEXT_PROP_AXIS].
2606 font_desc,
2607 im->tabwidth, 0.0,
2608 GFX_H_CENTER, GFX_V_TOP, graph_label);
2609 }
2611 }
2614 void axis_paint(
2615 image_desc_t *im)
2616 {
2617 /* draw x and y axis */
2618 /* gfx_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
2619 im->xorigin+im->xsize,im->yorigin-im->ysize,
2620 GRIDWIDTH, im->graph_col[GRC_AXIS]);
2622 gfx_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
2623 im->xorigin+im->xsize,im->yorigin-im->ysize,
2624 GRIDWIDTH, im->graph_col[GRC_AXIS]); */
2626 gfx_line(im, im->xorigin - 4,
2627 im->yorigin,
2628 im->xorigin + im->xsize +
2629 4, im->yorigin, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2630 gfx_line(im, im->xorigin,
2631 im->yorigin + 4,
2632 im->xorigin,
2633 im->yorigin - im->ysize -
2634 4, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2635 /* arrow for X and Y axis direction */
2636 gfx_new_area(im, im->xorigin + im->xsize + 2, im->yorigin - 3, im->xorigin + im->xsize + 2, im->yorigin + 3, im->xorigin + im->xsize + 7, im->yorigin, /* horyzontal */
2637 im->graph_col[GRC_ARROW]);
2638 gfx_close_path(im);
2639 gfx_new_area(im, im->xorigin - 3, im->yorigin - im->ysize - 2, im->xorigin + 3, im->yorigin - im->ysize - 2, im->xorigin, im->yorigin - im->ysize - 7, /* vertical */
2640 im->graph_col[GRC_ARROW]);
2641 gfx_close_path(im);
2642 if (im->second_axis_scale != 0){
2643 gfx_line ( im, im->xorigin+im->xsize,im->yorigin+4,
2644 im->xorigin+im->xsize,im->yorigin-im->ysize-4,
2645 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2646 gfx_new_area ( im,
2647 im->xorigin+im->xsize-2, im->yorigin-im->ysize-2,
2648 im->xorigin+im->xsize+3, im->yorigin-im->ysize-2,
2649 im->xorigin+im->xsize, im->yorigin-im->ysize-7, /* LINEOFFSET */
2650 im->graph_col[GRC_ARROW]);
2651 gfx_close_path(im);
2652 }
2654 }
2656 void grid_paint(
2657 image_desc_t *im)
2658 {
2659 long i;
2660 int res = 0;
2661 double X0, Y0; /* points for filled graph and more */
2662 struct gfx_color_t water_color;
2664 if (im->draw_3d_border > 0) {
2665 /* draw 3d border */
2666 i = im->draw_3d_border;
2667 gfx_new_area(im, 0, im->yimg,
2668 i, im->yimg - i, i, i, im->graph_col[GRC_SHADEA]);
2669 gfx_add_point(im, im->ximg - i, i);
2670 gfx_add_point(im, im->ximg, 0);
2671 gfx_add_point(im, 0, 0);
2672 gfx_close_path(im);
2673 gfx_new_area(im, i, im->yimg - i,
2674 im->ximg - i,
2675 im->yimg - i, im->ximg - i, i, im->graph_col[GRC_SHADEB]);
2676 gfx_add_point(im, im->ximg, 0);
2677 gfx_add_point(im, im->ximg, im->yimg);
2678 gfx_add_point(im, 0, im->yimg);
2679 gfx_close_path(im);
2680 }
2681 if (im->draw_x_grid == 1)
2682 vertical_grid(im);
2683 if (im->draw_y_grid == 1) {
2684 if (im->logarithmic) {
2685 res = horizontal_log_grid(im);
2686 } else {
2687 res = draw_horizontal_grid(im);
2688 }
2690 /* dont draw horizontal grid if there is no min and max val */
2691 if (!res) {
2692 char *nodata = "No Data found";
2694 gfx_text(im, im->ximg / 2,
2695 (2 * im->yorigin -
2696 im->ysize) / 2,
2697 im->graph_col[GRC_FONT],
2698 im->
2699 text_prop[TEXT_PROP_AXIS].
2700 font_desc,
2701 im->tabwidth, 0.0,
2702 GFX_H_CENTER, GFX_V_CENTER, nodata);
2703 }
2704 }
2706 /* yaxis unit description */
2707 if (im->ylegend[0] != '\0'){
2708 gfx_text(im,
2709 im->xOriginLegendY+10,
2710 im->yOriginLegendY,
2711 im->graph_col[GRC_FONT],
2712 im->
2713 text_prop[TEXT_PROP_UNIT].
2714 font_desc,
2715 im->tabwidth,
2716 RRDGRAPH_YLEGEND_ANGLE, GFX_H_CENTER, GFX_V_CENTER, im->ylegend);
2718 }
2719 if (im->second_axis_legend[0] != '\0'){
2720 gfx_text( im,
2721 im->xOriginLegendY2+10,
2722 im->yOriginLegendY2,
2723 im->graph_col[GRC_FONT],
2724 im->text_prop[TEXT_PROP_UNIT].font_desc,
2725 im->tabwidth,
2726 RRDGRAPH_YLEGEND_ANGLE,
2727 GFX_H_CENTER, GFX_V_CENTER,
2728 im->second_axis_legend);
2729 }
2731 /* graph title */
2732 gfx_text(im,
2733 im->xOriginTitle, im->yOriginTitle+6,
2734 im->graph_col[GRC_FONT],
2735 im->
2736 text_prop[TEXT_PROP_TITLE].
2737 font_desc,
2738 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP, im->title);
2739 /* rrdtool 'logo' */
2740 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
2741 water_color = im->graph_col[GRC_FONT];
2742 water_color.alpha = 0.3;
2743 double xpos = im->legendposition == EAST ? im->xOriginLegendY : im->ximg - 4;
2744 gfx_text(im, xpos, 5,
2745 water_color,
2746 im->
2747 text_prop[TEXT_PROP_WATERMARK].
2748 font_desc, im->tabwidth,
2749 -90, GFX_H_LEFT, GFX_V_TOP, "RRDTOOL / TOBI OETIKER");
2750 }
2751 /* graph watermark */
2752 if (im->watermark[0] != '\0') {
2753 water_color = im->graph_col[GRC_FONT];
2754 water_color.alpha = 0.3;
2755 gfx_text(im,
2756 im->ximg / 2, im->yimg - 6,
2757 water_color,
2758 im->
2759 text_prop[TEXT_PROP_WATERMARK].
2760 font_desc, im->tabwidth, 0,
2761 GFX_H_CENTER, GFX_V_BOTTOM, im->watermark);
2762 }
2764 /* graph labels */
2765 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
2766 for (i = 0; i < im->gdes_c; i++) {
2767 if (im->gdes[i].legend[0] == '\0')
2768 continue;
2769 /* im->gdes[i].leg_y is the bottom of the legend */
2770 X0 = im->xOriginLegend + im->gdes[i].leg_x;
2771 Y0 = im->legenddirection == TOP_DOWN ? im->yOriginLegend + im->gdes[i].leg_y : im->yOriginLegend + im->legendheight - im->gdes[i].leg_y;
2772 gfx_text(im, X0, Y0,
2773 im->graph_col[GRC_FONT],
2774 im->
2775 text_prop
2776 [TEXT_PROP_LEGEND].font_desc,
2777 im->tabwidth, 0.0,
2778 GFX_H_LEFT, GFX_V_BOTTOM, im->gdes[i].legend);
2779 /* The legend for GRAPH items starts with "M " to have
2780 enough space for the box */
2781 if (im->gdes[i].gf != GF_PRINT &&
2782 im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT) {
2783 double boxH, boxV;
2784 double X1, Y1;
2786 boxH = gfx_get_text_width(im, 0,
2787 im->
2788 text_prop
2789 [TEXT_PROP_LEGEND].
2790 font_desc,
2791 im->tabwidth, "o") * 1.2;
2792 boxV = boxH;
2793 /* shift the box up a bit */
2794 Y0 -= boxV * 0.4;
2796 if (im->dynamic_labels && im->gdes[i].gf == GF_HRULE) { /* [-] */
2797 cairo_save(im->cr);
2798 cairo_new_path(im->cr);
2799 cairo_set_line_width(im->cr, 1.0);
2800 gfx_line(im,
2801 X0, Y0 - boxV / 2,
2802 X0 + boxH, Y0 - boxV / 2,
2803 1.0, im->gdes[i].col);
2804 gfx_close_path(im);
2805 } else if (im->dynamic_labels && im->gdes[i].gf == GF_VRULE) { /* [|] */
2806 cairo_save(im->cr);
2807 cairo_new_path(im->cr);
2808 cairo_set_line_width(im->cr, 1.0);
2809 gfx_line(im,
2810 X0 + boxH / 2, Y0,
2811 X0 + boxH / 2, Y0 - boxV,
2812 1.0, im->gdes[i].col);
2813 gfx_close_path(im);
2814 } else if (im->dynamic_labels && im->gdes[i].gf == GF_LINE) { /* [/] */
2815 cairo_save(im->cr);
2816 cairo_new_path(im->cr);
2817 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
2818 gfx_line(im,
2819 X0, Y0,
2820 X0 + boxH, Y0 - boxV,
2821 im->gdes[i].linewidth, im->gdes[i].col);
2822 gfx_close_path(im);
2823 } else {
2824 /* make sure transparent colors show up the same way as in the graph */
2825 gfx_new_area(im,
2826 X0, Y0 - boxV,
2827 X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
2828 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2829 gfx_close_path(im);
2830 gfx_new_area(im, X0, Y0 - boxV, X0,
2831 Y0, X0 + boxH, Y0, im->gdes[i].col);
2832 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2833 gfx_close_path(im);
2834 cairo_save(im->cr);
2835 cairo_new_path(im->cr);
2836 cairo_set_line_width(im->cr, 1.0);
2837 X1 = X0 + boxH;
2838 Y1 = Y0 - boxV;
2839 gfx_line_fit(im, &X0, &Y0);
2840 gfx_line_fit(im, &X1, &Y1);
2841 cairo_move_to(im->cr, X0, Y0);
2842 cairo_line_to(im->cr, X1, Y0);
2843 cairo_line_to(im->cr, X1, Y1);
2844 cairo_line_to(im->cr, X0, Y1);
2845 cairo_close_path(im->cr);
2846 cairo_set_source_rgba(im->cr,
2847 im->graph_col[GRC_FRAME].red,
2848 im->graph_col[GRC_FRAME].green,
2849 im->graph_col[GRC_FRAME].blue,
2850 im->graph_col[GRC_FRAME].alpha);
2851 }
2852 if (im->gdes[i].dash) {
2853 /* make box borders in legend dashed if the graph is dashed */
2854 double dashes[] = {
2855 3.0
2856 };
2857 cairo_set_dash(im->cr, dashes, 1, 0.0);
2858 }
2859 cairo_stroke(im->cr);
2860 cairo_restore(im->cr);
2861 }
2862 }
2863 }
2864 }
2867 /*****************************************************
2868 * lazy check make sure we rely need to create this graph
2869 *****************************************************/
2871 int lazy_check(
2872 image_desc_t *im)
2873 {
2874 FILE *fd = NULL;
2875 int size = 1;
2876 struct stat imgstat;
2878 if (im->lazy == 0)
2879 return 0; /* no lazy option */
2880 if (strlen(im->graphfile) == 0)
2881 return 0; /* inmemory option */
2882 if (stat(im->graphfile, &imgstat) != 0)
2883 return 0; /* can't stat */
2884 /* one pixel in the existing graph is more then what we would
2885 change here ... */
2886 if (time(NULL) - imgstat.st_mtime > (im->end - im->start) / im->xsize)
2887 return 0;
2888 if ((fd = fopen(im->graphfile, "rb")) == NULL)
2889 return 0; /* the file does not exist */
2890 switch (im->imgformat) {
2891 case IF_PNG:
2892 size = PngSize(fd, &(im->ximg), &(im->yimg));
2893 break;
2894 default:
2895 size = 1;
2896 }
2897 fclose(fd);
2898 return size;
2899 }
2902 int graph_size_location(
2903 image_desc_t
2904 *im,
2905 int elements)
2906 {
2907 /* The actual size of the image to draw is determined from
2908 ** several sources. The size given on the command line is
2909 ** the graph area but we need more as we have to draw labels
2910 ** and other things outside the graph area. If the option
2911 ** --full-size-mode is selected the size defines the total
2912 ** image size and the size available for the graph is
2913 ** calculated.
2914 */
2916 /** +---+-----------------------------------+
2917 ** | y |...............graph title.........|
2918 ** | +---+-------------------------------+
2919 ** | a | y | |
2920 ** | x | | |
2921 ** | i | a | |
2922 ** | s | x | main graph area |
2923 ** | | i | |
2924 ** | t | s | |
2925 ** | i | | |
2926 ** | t | l | |
2927 ** | l | b +-------------------------------+
2928 ** | e | l | x axis labels |
2929 ** +---+---+-------------------------------+
2930 ** |....................legends............|
2931 ** +---------------------------------------+
2932 ** | watermark |
2933 ** +---------------------------------------+
2934 */
2936 int Xvertical = 0, Xvertical2 = 0, Ytitle =
2937 0, Xylabel = 0, Xmain = 0, Ymain =
2938 0, Yxlabel = 0, Xspacing = 15, Yspacing = 15, Ywatermark = 4;
2940 // no legends and no the shall be plotted it's easy
2941 if (im->extra_flags & ONLY_GRAPH) {
2942 im->xorigin = 0;
2943 im->ximg = im->xsize;
2944 im->yimg = im->ysize;
2945 im->yorigin = im->ysize;
2946 ytr(im, DNAN);
2947 return 0;
2948 }
2950 if(im->watermark[0] != '\0') {
2951 Ywatermark = im->text_prop[TEXT_PROP_WATERMARK].size * 2;
2952 }
2954 // calculate the width of the left vertical legend
2955 if (im->ylegend[0] != '\0') {
2956 Xvertical = im->text_prop[TEXT_PROP_UNIT].size * 2;
2957 }
2959 // calculate the width of the right vertical legend
2960 if (im->second_axis_legend[0] != '\0') {
2961 Xvertical2 = im->text_prop[TEXT_PROP_UNIT].size * 2;
2962 }
2963 else{
2964 Xvertical2 = Xspacing;
2965 }
2967 if (im->title[0] != '\0') {
2968 /* The title is placed "inbetween" two text lines so it
2969 ** automatically has some vertical spacing. The horizontal
2970 ** spacing is added here, on each side.
2971 */
2972 /* if necessary, reduce the font size of the title until it fits the image width */
2973 Ytitle = im->text_prop[TEXT_PROP_TITLE].size * 2.6 + 10;
2974 }
2975 else{
2976 // we have no title; get a little clearing from the top
2977 Ytitle = Yspacing;
2978 }
2980 if (elements) {
2981 if (im->draw_x_grid) {
2982 // calculate the height of the horizontal labelling
2983 Yxlabel = im->text_prop[TEXT_PROP_AXIS].size * 2.5;
2984 }
2985 if (im->draw_y_grid || im->forceleftspace) {
2986 // calculate the width of the vertical labelling
2987 Xylabel =
2988 gfx_get_text_width(im, 0,
2989 im->text_prop[TEXT_PROP_AXIS].font_desc,
2990 im->tabwidth, "0") * im->unitslength;
2991 }
2992 }
2994 // add some space to the labelling
2995 Xylabel += Xspacing;
2997 /* If the legend is printed besides the graph the width has to be
2998 ** calculated first. Placing the legend north or south of the
2999 ** graph requires the width calculation first, so the legend is
3000 ** skipped for the moment.
3001 */
3002 im->legendheight = 0;
3003 im->legendwidth = 0;
3004 if (!(im->extra_flags & NOLEGEND)) {
3005 if(im->legendposition == WEST || im->legendposition == EAST){
3006 if (leg_place(im, 1) == -1){
3007 return -1;
3008 }
3009 }
3010 }
3012 if (im->extra_flags & FULL_SIZE_MODE) {
3014 /* The actual size of the image to draw has been determined by the user.
3015 ** The graph area is the space remaining after accounting for the legend,
3016 ** the watermark, the axis labels, and the title.
3017 */
3018 im->ximg = im->xsize;
3019 im->yimg = im->ysize;
3020 Xmain = im->ximg;
3021 Ymain = im->yimg;
3023 /* Now calculate the total size. Insert some spacing where
3024 desired. im->xorigin and im->yorigin need to correspond
3025 with the lower left corner of the main graph area or, if
3026 this one is not set, the imaginary box surrounding the
3027 pie chart area. */
3028 /* Initial size calculation for the main graph area */
3030 Xmain -= Xylabel;// + Xspacing;
3031 if((im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3032 Xmain -= im->legendwidth;// + Xspacing;
3033 }
3034 if (im->second_axis_scale != 0){
3035 Xmain -= Xylabel;
3036 }
3037 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3038 Xmain -= Xspacing;
3039 }
3041 Xmain -= Xvertical + Xvertical2;
3043 /* limit the remaining space to 0 */
3044 if(Xmain < 1){
3045 Xmain = 1;
3046 }
3047 im->xsize = Xmain;
3049 /* Putting the legend north or south, the height can now be calculated */
3050 if (!(im->extra_flags & NOLEGEND)) {
3051 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3052 im->legendwidth = im->ximg;
3053 if (leg_place(im, 0) == -1){
3054 return -1;
3055 }
3056 }
3057 }
3059 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3060 Ymain -= Yxlabel + im->legendheight;
3061 }
3062 else{
3063 Ymain -= Yxlabel;
3064 }
3066 /* reserve space for the title *or* some padding above the graph */
3067 Ymain -= Ytitle;
3069 /* reserve space for padding below the graph */
3070 if (im->extra_flags & NOLEGEND) {
3071 Ymain -= 0.5*Yspacing;
3072 }
3074 if (im->watermark[0] != '\0') {
3075 Ymain -= Ywatermark;
3076 }
3077 /* limit the remaining height to 0 */
3078 if(Ymain < 1){
3079 Ymain = 1;
3080 }
3081 im->ysize = Ymain;
3082 } else { /* dimension options -width and -height refer to the dimensions of the main graph area */
3084 /* The actual size of the image to draw is determined from
3085 ** several sources. The size given on the command line is
3086 ** the graph area but we need more as we have to draw labels
3087 ** and other things outside the graph area.
3088 */
3090 if (elements) {
3091 Xmain = im->xsize; // + Xspacing;
3092 Ymain = im->ysize;
3093 }
3095 im->ximg = Xmain + Xylabel;
3096 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3097 im->ximg += Xspacing;
3098 }
3100 if( (im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3101 im->ximg += im->legendwidth;// + Xspacing;
3102 }
3103 if (im->second_axis_scale != 0){
3104 im->ximg += Xylabel;
3105 }
3107 im->ximg += Xvertical + Xvertical2;
3109 if (!(im->extra_flags & NOLEGEND)) {
3110 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3111 im->legendwidth = im->ximg;
3112 if (leg_place(im, 0) == -1){
3113 return -1;
3114 }
3115 }
3116 }
3118 im->yimg = Ymain + Yxlabel;
3119 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3120 im->yimg += im->legendheight;
3121 }
3123 /* reserve space for the title *or* some padding above the graph */
3124 if (Ytitle) {
3125 im->yimg += Ytitle;
3126 } else {
3127 im->yimg += 1.5 * Yspacing;
3128 }
3129 /* reserve space for padding below the graph */
3130 if (im->extra_flags & NOLEGEND) {
3131 im->yimg += 0.5*Yspacing;
3132 }
3134 if (im->watermark[0] != '\0') {
3135 im->yimg += Ywatermark;
3136 }
3137 }
3140 /* In case of putting the legend in west or east position the first
3141 ** legend calculation might lead to wrong positions if some items
3142 ** are not aligned on the left hand side (e.g. centered) as the
3143 ** legendwidth wight have been increased after the item was placed.
3144 ** In this case the positions have to be recalculated.
3145 */
3146 if (!(im->extra_flags & NOLEGEND)) {
3147 if(im->legendposition == WEST || im->legendposition == EAST){
3148 if (leg_place(im, 0) == -1){
3149 return -1;
3150 }
3151 }
3152 }
3154 /* After calculating all dimensions
3155 ** it is now possible to calculate
3156 ** all offsets.
3157 */
3158 switch(im->legendposition){
3159 case NORTH:
3160 im->xOriginTitle = (im->ximg / 2);
3161 im->yOriginTitle = 0;
3163 im->xOriginLegend = 0;
3164 im->yOriginLegend = Ytitle;
3166 im->xOriginLegendY = 0;
3167 im->yOriginLegendY = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3169 im->xorigin = Xvertical + Xylabel;
3170 im->yorigin = Ytitle + im->legendheight + Ymain;
3172 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3173 if (im->second_axis_scale != 0){
3174 im->xOriginLegendY2 += Xylabel;
3175 }
3176 im->yOriginLegendY2 = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3178 break;
3180 case WEST:
3181 im->xOriginTitle = im->legendwidth + im->xsize / 2;
3182 im->yOriginTitle = 0;
3184 im->xOriginLegend = 0;
3185 im->yOriginLegend = Ytitle;
3187 im->xOriginLegendY = im->legendwidth;
3188 im->yOriginLegendY = Ytitle + (Ymain / 2);
3190 im->xorigin = im->legendwidth + Xvertical + Xylabel;
3191 im->yorigin = Ytitle + Ymain;
3193 im->xOriginLegendY2 = im->legendwidth + Xvertical + Xylabel + Xmain;
3194 if (im->second_axis_scale != 0){
3195 im->xOriginLegendY2 += Xylabel;
3196 }
3197 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3199 break;
3201 case SOUTH:
3202 im->xOriginTitle = im->ximg / 2;
3203 im->yOriginTitle = 0;
3205 im->xOriginLegend = 0;
3206 im->yOriginLegend = Ytitle + Ymain + Yxlabel;
3208 im->xOriginLegendY = 0;
3209 im->yOriginLegendY = Ytitle + (Ymain / 2);
3211 im->xorigin = Xvertical + Xylabel;
3212 im->yorigin = Ytitle + Ymain;
3214 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3215 if (im->second_axis_scale != 0){
3216 im->xOriginLegendY2 += Xylabel;
3217 }
3218 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3220 break;
3222 case EAST:
3223 im->xOriginTitle = im->xsize / 2;
3224 im->yOriginTitle = 0;
3226 im->xOriginLegend = Xvertical + Xylabel + Xmain + Xvertical2;
3227 if (im->second_axis_scale != 0){
3228 im->xOriginLegend += Xylabel;
3229 }
3230 im->yOriginLegend = Ytitle;
3232 im->xOriginLegendY = 0;
3233 im->yOriginLegendY = Ytitle + (Ymain / 2);
3235 im->xorigin = Xvertical + Xylabel;
3236 im->yorigin = Ytitle + Ymain;
3238 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3239 if (im->second_axis_scale != 0){
3240 im->xOriginLegendY2 += Xylabel;
3241 }
3242 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3244 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3245 im->xOriginTitle += Xspacing;
3246 im->xOriginLegend += Xspacing;
3247 im->xOriginLegendY += Xspacing;
3248 im->xorigin += Xspacing;
3249 im->xOriginLegendY2 += Xspacing;
3250 }
3251 break;
3252 }
3254 xtr(im, 0);
3255 ytr(im, DNAN);
3256 return 0;
3257 }
3259 static cairo_status_t cairo_output(
3260 void *closure,
3261 const unsigned char
3262 *data,
3263 unsigned int length)
3264 {
3265 image_desc_t *im = (image_desc_t*)closure;
3267 im->rendered_image =
3268 (unsigned char*)realloc(im->rendered_image, im->rendered_image_size + length);
3269 if (im->rendered_image == NULL)
3270 return CAIRO_STATUS_WRITE_ERROR;
3271 memcpy(im->rendered_image + im->rendered_image_size, data, length);
3272 im->rendered_image_size += length;
3273 return CAIRO_STATUS_SUCCESS;
3274 }
3276 /* draw that picture thing ... */
3277 int graph_paint(
3278 image_desc_t *im)
3279 {
3280 int i, ii;
3281 int lazy = lazy_check(im);
3282 double areazero = 0.0;
3283 graph_desc_t *lastgdes = NULL;
3284 rrd_infoval_t info;
3286 // PangoFontMap *font_map = pango_cairo_font_map_get_default();
3288 /* pull the data from the rrd files ... */
3289 if (data_fetch(im) == -1)
3290 return -1;
3291 /* evaluate VDEF and CDEF operations ... */
3292 if (data_calc(im) == -1)
3293 return -1;
3294 /* calculate and PRINT and GPRINT definitions. We have to do it at
3295 * this point because it will affect the length of the legends
3296 * if there are no graph elements (i==0) we stop here ...
3297 * if we are lazy, try to quit ...
3298 */
3299 i = print_calc(im);
3300 if (i < 0)
3301 return -1;
3303 /* if we want and can be lazy ... quit now */
3304 if (i == 0)
3305 return 0;
3307 /**************************************************************
3308 *** Calculating sizes and locations became a bit confusing ***
3309 *** so I moved this into a separate function. ***
3310 **************************************************************/
3311 if (graph_size_location(im, i) == -1)
3312 return -1;
3314 info.u_cnt = im->xorigin;
3315 grinfo_push(im, sprintf_alloc("graph_left"), RD_I_CNT, info);
3316 info.u_cnt = im->yorigin - im->ysize;
3317 grinfo_push(im, sprintf_alloc("graph_top"), RD_I_CNT, info);
3318 info.u_cnt = im->xsize;
3319 grinfo_push(im, sprintf_alloc("graph_width"), RD_I_CNT, info);
3320 info.u_cnt = im->ysize;
3321 grinfo_push(im, sprintf_alloc("graph_height"), RD_I_CNT, info);
3322 info.u_cnt = im->ximg;
3323 grinfo_push(im, sprintf_alloc("image_width"), RD_I_CNT, info);
3324 info.u_cnt = im->yimg;
3325 grinfo_push(im, sprintf_alloc("image_height"), RD_I_CNT, info);
3326 info.u_cnt = im->start;
3327 grinfo_push(im, sprintf_alloc("graph_start"), RD_I_CNT, info);
3328 info.u_cnt = im->end;
3329 grinfo_push(im, sprintf_alloc("graph_end"), RD_I_CNT, info);
3331 /* if we want and can be lazy ... quit now */
3332 if (lazy)
3333 return 0;
3335 /* get actual drawing data and find min and max values */
3336 if (data_proc(im) == -1)
3337 return -1;
3338 if (!im->logarithmic) {
3339 si_unit(im);
3340 }
3342 /* identify si magnitude Kilo, Mega Giga ? */
3343 if (!im->rigid && !im->logarithmic)
3344 expand_range(im); /* make sure the upper and lower limit are
3345 sensible values */
3347 info.u_val = im->minval;
3348 grinfo_push(im, sprintf_alloc("value_min"), RD_I_VAL, info);
3349 info.u_val = im->maxval;
3350 grinfo_push(im, sprintf_alloc("value_max"), RD_I_VAL, info);
3353 if (!calc_horizontal_grid(im))
3354 return -1;
3355 /* reset precalc */
3356 ytr(im, DNAN);
3357 /* if (im->gridfit)
3358 apply_gridfit(im); */
3359 /* the actual graph is created by going through the individual
3360 graph elements and then drawing them */
3361 cairo_surface_destroy(im->surface);
3362 switch (im->imgformat) {
3363 case IF_PNG:
3364 im->surface =
3365 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
3366 im->ximg * im->zoom,
3367 im->yimg * im->zoom);
3368 break;
3369 case IF_PDF:
3370 im->gridfit = 0;
3371 im->surface = strlen(im->graphfile)
3372 ? cairo_pdf_surface_create(im->graphfile, im->ximg * im->zoom,
3373 im->yimg * im->zoom)
3374 : cairo_pdf_surface_create_for_stream
3375 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3376 break;
3377 case IF_EPS:
3378 im->gridfit = 0;
3379 im->surface = strlen(im->graphfile)
3380 ?
3381 cairo_ps_surface_create(im->graphfile, im->ximg * im->zoom,
3382 im->yimg * im->zoom)
3383 : cairo_ps_surface_create_for_stream
3384 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3385 break;
3386 case IF_SVG:
3387 im->gridfit = 0;
3388 im->surface = strlen(im->graphfile)
3389 ?
3390 cairo_svg_surface_create(im->
3391 graphfile,
3392 im->ximg * im->zoom, im->yimg * im->zoom)
3393 : cairo_svg_surface_create_for_stream
3394 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3395 cairo_svg_surface_restrict_to_version
3396 (im->surface, CAIRO_SVG_VERSION_1_1);
3397 break;
3398 };
3399 cairo_destroy(im->cr);
3400 im->cr = cairo_create(im->surface);
3401 cairo_set_antialias(im->cr, im->graph_antialias);
3402 cairo_scale(im->cr, im->zoom, im->zoom);
3403 // pango_cairo_font_map_set_resolution(PANGO_CAIRO_FONT_MAP(font_map), 100);
3404 gfx_new_area(im, 0, 0, 0, im->yimg,
3405 im->ximg, im->yimg, im->graph_col[GRC_BACK]);
3406 gfx_add_point(im, im->ximg, 0);
3407 gfx_close_path(im);
3408 gfx_new_area(im, im->xorigin,
3409 im->yorigin,
3410 im->xorigin +
3411 im->xsize, im->yorigin,
3412 im->xorigin +
3413 im->xsize,
3414 im->yorigin - im->ysize, im->graph_col[GRC_CANVAS]);
3415 gfx_add_point(im, im->xorigin, im->yorigin - im->ysize);
3416 gfx_close_path(im);
3417 cairo_rectangle(im->cr, im->xorigin, im->yorigin - im->ysize - 1.0,
3418 im->xsize, im->ysize + 2.0);
3419 cairo_clip(im->cr);
3420 if (im->minval > 0.0)
3421 areazero = im->minval;
3422 if (im->maxval < 0.0)
3423 areazero = im->maxval;
3424 for (i = 0; i < im->gdes_c; i++) {
3425 switch (im->gdes[i].gf) {
3426 case GF_CDEF:
3427 case GF_VDEF:
3428 case GF_DEF:
3429 case GF_PRINT:
3430 case GF_GPRINT:
3431 case GF_COMMENT:
3432 case GF_TEXTALIGN:
3433 case GF_HRULE:
3434 case GF_VRULE:
3435 case GF_XPORT:
3436 case GF_SHIFT:
3437 break;
3438 case GF_TICK:
3439 for (ii = 0; ii < im->xsize; ii++) {
3440 if (!isnan(im->gdes[i].p_data[ii])
3441 && im->gdes[i].p_data[ii] != 0.0) {
3442 if (im->gdes[i].yrule > 0) {
3443 gfx_line(im,
3444 im->xorigin + ii,
3445 im->yorigin + 1.0,
3446 im->xorigin + ii,
3447 im->yorigin -
3448 im->gdes[i].yrule *
3449 im->ysize, 1.0, im->gdes[i].col);
3450 } else if (im->gdes[i].yrule < 0) {
3451 gfx_line(im,
3452 im->xorigin + ii,
3453 im->yorigin - im->ysize - 1.0,
3454 im->xorigin + ii,
3455 im->yorigin - im->ysize -
3456 im->gdes[i].
3457 yrule *
3458 im->ysize, 1.0, im->gdes[i].col);
3459 }
3460 }
3461 }
3462 break;
3463 case GF_LINE:
3464 case GF_AREA:
3465 case GF_GRAD: {
3466 rrd_value_t diffval = im->maxval - im->minval;
3467 rrd_value_t maxlimit = im->maxval + 9 * diffval;
3468 rrd_value_t minlimit = im->minval - 9 * diffval;
3469 for (ii = 0; ii < im->xsize; ii++) {
3470 /* fix data points at oo and -oo */
3471 if (isinf(im->gdes[i].p_data[ii])) {
3472 if (im->gdes[i].p_data[ii] > 0) {
3473 im->gdes[i].p_data[ii] = im->maxval;
3474 } else {
3475 im->gdes[i].p_data[ii] = im->minval;
3476 }
3477 }
3478 /* some versions of cairo go unstable when trying
3479 to draw way out of the canvas ... lets not even try */
3480 if (im->gdes[i].p_data[ii] > maxlimit) {
3481 im->gdes[i].p_data[ii] = maxlimit;
3482 }
3483 if (im->gdes[i].p_data[ii] < minlimit) {
3484 im->gdes[i].p_data[ii] = minlimit;
3485 }
3486 } /* for */
3488 /* *******************************************************
3489 a ___. (a,t)
3490 | | ___
3491 ____| | | |
3492 | |___|
3493 -------|--t-1--t--------------------------------
3495 if we know the value at time t was a then
3496 we draw a square from t-1 to t with the value a.
3498 ********************************************************* */
3499 if (im->gdes[i].col.alpha != 0.0) {
3500 /* GF_LINE and friend */
3501 if (im->gdes[i].gf == GF_LINE) {
3502 double last_y = 0.0;
3503 int draw_on = 0;
3505 cairo_save(im->cr);
3506 cairo_new_path(im->cr);
3507 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
3508 if (im->gdes[i].dash) {
3509 cairo_set_dash(im->cr,
3510 im->gdes[i].p_dashes,
3511 im->gdes[i].ndash, im->gdes[i].offset);
3512 }
3514 for (ii = 1; ii < im->xsize; ii++) {
3515 if (isnan(im->gdes[i].p_data[ii])
3516 || (im->slopemode == 1
3517 && isnan(im->gdes[i].p_data[ii - 1]))) {
3518 draw_on = 0;
3519 continue;
3520 }
3521 if (draw_on == 0) {
3522 last_y = ytr(im, im->gdes[i].p_data[ii]);
3523 if (im->slopemode == 0) {
3524 double x = ii - 1 + im->xorigin;
3525 double y = last_y;
3527 gfx_line_fit(im, &x, &y);
3528 cairo_move_to(im->cr, x, y);
3529 x = ii + im->xorigin;
3530 y = last_y;
3531 gfx_line_fit(im, &x, &y);
3532 cairo_line_to(im->cr, x, y);
3533 } else {
3534 double x = ii - 1 + im->xorigin;
3535 double y =
3536 ytr(im, im->gdes[i].p_data[ii - 1]);
3537 gfx_line_fit(im, &x, &y);
3538 cairo_move_to(im->cr, x, y);
3539 x = ii + im->xorigin;
3540 y = last_y;
3541 gfx_line_fit(im, &x, &y);
3542 cairo_line_to(im->cr, x, y);
3543 }
3544 draw_on = 1;
3545 } else {
3546 double x1 = ii + im->xorigin;
3547 double y1 = ytr(im, im->gdes[i].p_data[ii]);
3549 if (im->slopemode == 0
3550 && !AlmostEqual2sComplement(y1, last_y, 4)) {
3551 double x = ii - 1 + im->xorigin;
3552 double y = y1;
3554 gfx_line_fit(im, &x, &y);
3555 cairo_line_to(im->cr, x, y);
3556 };
3557 last_y = y1;
3558 gfx_line_fit(im, &x1, &y1);
3559 cairo_line_to(im->cr, x1, y1);
3560 };
3561 }
3562 cairo_set_source_rgba(im->cr,
3563 im->gdes[i].
3564 col.red,
3565 im->gdes[i].
3566 col.green,
3567 im->gdes[i].
3568 col.blue, im->gdes[i].col.alpha);
3569 cairo_set_line_cap(im->cr, CAIRO_LINE_CAP_ROUND);
3570 cairo_set_line_join(im->cr, CAIRO_LINE_JOIN_ROUND);
3571 cairo_stroke(im->cr);
3572 cairo_restore(im->cr);
3573 } else {
3574 double lastx=0;
3575 double lasty=0;
3576 int idxI = -1;
3577 double *foreY =
3578 (double *) malloc(sizeof(double) * im->xsize * 2);
3579 double *foreX =
3580 (double *) malloc(sizeof(double) * im->xsize * 2);
3581 double *backY =
3582 (double *) malloc(sizeof(double) * im->xsize * 2);
3583 double *backX =
3584 (double *) malloc(sizeof(double) * im->xsize * 2);
3585 int drawem = 0;
3587 for (ii = 0; ii <= im->xsize; ii++) {
3588 double ybase, ytop;
3590 if (idxI > 0 && (drawem != 0 || ii == im->xsize)) {
3591 int cntI = 1;
3592 int lastI = 0;
3594 while (cntI < idxI
3595 &&
3596 AlmostEqual2sComplement(foreY
3597 [lastI],
3598 foreY[cntI], 4)
3599 &&
3600 AlmostEqual2sComplement(foreY
3601 [lastI],
3602 foreY
3603 [cntI + 1], 4)) {
3604 cntI++;
3605 }
3606 if (im->gdes[i].gf != GF_GRAD) {
3607 gfx_new_area(im,
3608 backX[0], backY[0],
3609 foreX[0], foreY[0],
3610 foreX[cntI],
3611 foreY[cntI], im->gdes[i].col);
3612 } else {
3613 lastx = foreX[cntI];
3614 lasty = foreY[cntI];
3615 }
3616 while (cntI < idxI) {
3617 lastI = cntI;
3618 cntI++;
3619 while (cntI < idxI
3620 &&
3621 AlmostEqual2sComplement(foreY
3622 [lastI],
3623 foreY[cntI], 4)
3624 &&
3625 AlmostEqual2sComplement(foreY
3626 [lastI],
3627 foreY
3628 [cntI
3629 + 1], 4)) {
3630 cntI++;
3631 }
3632 if (im->gdes[i].gf != GF_GRAD) {
3633 gfx_add_point(im, foreX[cntI], foreY[cntI]);
3634 } else {
3635 gfx_add_rect_fadey(im,
3636 lastx, foreY[0],
3637 foreX[cntI], foreY[cntI], lasty,
3638 im->gdes[i].col,
3639 im->gdes[i].col2,
3640 im->gdes[i].gradheight
3641 );
3642 lastx = foreX[cntI];
3643 lasty = foreY[cntI];
3644 }
3645 }
3646 if (im->gdes[i].gf != GF_GRAD) {
3647 gfx_add_point(im, backX[idxI], backY[idxI]);
3648 } else {
3649 gfx_add_rect_fadey(im,
3650 lastx, foreY[0],
3651 backX[idxI], backY[idxI], lasty,
3652 im->gdes[i].col,
3653 im->gdes[i].col2,
3654 im->gdes[i].gradheight);
3655 lastx = backX[idxI];
3656 lasty = backY[idxI];
3657 }
3658 while (idxI > 1) {
3659 lastI = idxI;
3660 idxI--;
3661 while (idxI > 1
3662 &&
3663 AlmostEqual2sComplement(backY
3664 [lastI],
3665 backY[idxI], 4)
3666 &&
3667 AlmostEqual2sComplement(backY
3668 [lastI],
3669 backY
3670 [idxI
3671 - 1], 4)) {
3672 idxI--;
3673 }
3674 if (im->gdes[i].gf != GF_GRAD) {
3675 gfx_add_point(im, backX[idxI], backY[idxI]);
3676 } else {
3677 gfx_add_rect_fadey(im,
3678 lastx, foreY[0],
3679 backX[idxI], backY[idxI], lasty,
3680 im->gdes[i].col,
3681 im->gdes[i].col2,
3682 im->gdes[i].gradheight);
3683 lastx = backX[idxI];
3684 lasty = backY[idxI];
3685 }
3686 }
3687 idxI = -1;
3688 drawem = 0;
3689 if (im->gdes[i].gf != GF_GRAD)
3690 gfx_close_path(im);
3691 }
3692 if (drawem != 0) {
3693 drawem = 0;
3694 idxI = -1;
3695 }
3696 if (ii == im->xsize)
3697 break;
3698 if (im->slopemode == 0 && ii == 0) {
3699 continue;
3700 }
3701 if (isnan(im->gdes[i].p_data[ii])) {
3702 drawem = 1;
3703 continue;
3704 }
3705 ytop = ytr(im, im->gdes[i].p_data[ii]);
3706 if (lastgdes && im->gdes[i].stack) {
3707 ybase = ytr(im, lastgdes->p_data[ii]);
3708 } else {
3709 ybase = ytr(im, areazero);
3710 }
3711 if (ybase == ytop) {
3712 drawem = 1;
3713 continue;
3714 }
3716 if (ybase > ytop) {
3717 double extra = ytop;
3719 ytop = ybase;
3720 ybase = extra;
3721 }
3722 if (im->slopemode == 0) {
3723 backY[++idxI] = ybase - 0.2;
3724 backX[idxI] = ii + im->xorigin - 1;
3725 foreY[idxI] = ytop + 0.2;
3726 foreX[idxI] = ii + im->xorigin - 1;
3727 }
3728 backY[++idxI] = ybase - 0.2;
3729 backX[idxI] = ii + im->xorigin;
3730 foreY[idxI] = ytop + 0.2;
3731 foreX[idxI] = ii + im->xorigin;
3732 }
3733 /* close up any remaining area */
3734 free(foreY);
3735 free(foreX);
3736 free(backY);
3737 free(backX);
3738 } /* else GF_LINE */
3739 }
3740 /* if color != 0x0 */
3741 /* make sure we do not run into trouble when stacking on NaN */
3742 for (ii = 0; ii < im->xsize; ii++) {
3743 if (isnan(im->gdes[i].p_data[ii])) {
3744 if (lastgdes && (im->gdes[i].stack)) {
3745 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
3746 } else {
3747 im->gdes[i].p_data[ii] = areazero;
3748 }
3749 }
3750 }
3751 lastgdes = &(im->gdes[i]);
3752 break;
3753 } /* GF_AREA, GF_LINE, GF_GRAD */
3754 case GF_STACK:
3755 rrd_set_error
3756 ("STACK should already be turned into LINE or AREA here");
3757 return -1;
3758 break;
3759 } /* switch */
3760 }
3761 cairo_reset_clip(im->cr);
3763 /* grid_paint also does the text */
3764 if (!(im->extra_flags & ONLY_GRAPH))
3765 grid_paint(im);
3766 if (!(im->extra_flags & ONLY_GRAPH))
3767 axis_paint(im);
3768 /* the RULES are the last thing to paint ... */
3769 for (i = 0; i < im->gdes_c; i++) {
3771 switch (im->gdes[i].gf) {
3772 case GF_HRULE:
3773 if (im->gdes[i].yrule >= im->minval
3774 && im->gdes[i].yrule <= im->maxval) {
3775 cairo_save(im->cr);
3776 if (im->gdes[i].dash) {
3777 cairo_set_dash(im->cr,
3778 im->gdes[i].p_dashes,
3779 im->gdes[i].ndash, im->gdes[i].offset);
3780 }
3781 gfx_line(im, im->xorigin,
3782 ytr(im, im->gdes[i].yrule),
3783 im->xorigin + im->xsize,
3784 ytr(im, im->gdes[i].yrule), 1.0, im->gdes[i].col);
3785 cairo_stroke(im->cr);
3786 cairo_restore(im->cr);
3787 }
3788 break;
3789 case GF_VRULE:
3790 if (im->gdes[i].xrule >= im->start
3791 && im->gdes[i].xrule <= im->end) {
3792 cairo_save(im->cr);
3793 if (im->gdes[i].dash) {
3794 cairo_set_dash(im->cr,
3795 im->gdes[i].p_dashes,
3796 im->gdes[i].ndash, im->gdes[i].offset);
3797 }
3798 gfx_line(im,
3799 xtr(im, im->gdes[i].xrule),
3800 im->yorigin, xtr(im,
3801 im->
3802 gdes[i].
3803 xrule),
3804 im->yorigin - im->ysize, 1.0, im->gdes[i].col);
3805 cairo_stroke(im->cr);
3806 cairo_restore(im->cr);
3807 }
3808 break;
3809 default:
3810 break;
3811 }
3812 }
3815 switch (im->imgformat) {
3816 case IF_PNG:
3817 {
3818 cairo_status_t status;
3820 status = strlen(im->graphfile) ?
3821 cairo_surface_write_to_png(im->surface, im->graphfile)
3822 : cairo_surface_write_to_png_stream(im->surface, &cairo_output,
3823 im);
3825 if (status != CAIRO_STATUS_SUCCESS) {
3826 rrd_set_error("Could not save png to '%s'", im->graphfile);
3827 return 1;
3828 }
3829 break;
3830 }
3831 default:
3832 if (strlen(im->graphfile)) {
3833 cairo_show_page(im->cr);
3834 } else {
3835 cairo_surface_finish(im->surface);
3836 }
3837 break;
3838 }
3840 return 0;
3841 }
3844 /*****************************************************
3845 * graph stuff
3846 *****************************************************/
3848 int gdes_alloc(
3849 image_desc_t *im)
3850 {
3852 im->gdes_c++;
3853 if ((im->gdes = (graph_desc_t *)
3854 rrd_realloc(im->gdes, (im->gdes_c)
3855 * sizeof(graph_desc_t))) == NULL) {
3856 rrd_set_error("realloc graph_descs");
3857 return -1;
3858 }
3861 im->gdes[im->gdes_c - 1].step = im->step;
3862 im->gdes[im->gdes_c - 1].step_orig = im->step;
3863 im->gdes[im->gdes_c - 1].stack = 0;
3864 im->gdes[im->gdes_c - 1].linewidth = 0;
3865 im->gdes[im->gdes_c - 1].debug = 0;
3866 im->gdes[im->gdes_c - 1].start = im->start;
3867 im->gdes[im->gdes_c - 1].start_orig = im->start;
3868 im->gdes[im->gdes_c - 1].end = im->end;
3869 im->gdes[im->gdes_c - 1].end_orig = im->end;
3870 im->gdes[im->gdes_c - 1].vname[0] = '\0';
3871 im->gdes[im->gdes_c - 1].data = NULL;
3872 im->gdes[im->gdes_c - 1].ds_namv = NULL;
3873 im->gdes[im->gdes_c - 1].data_first = 0;
3874 im->gdes[im->gdes_c - 1].p_data = NULL;
3875 im->gdes[im->gdes_c - 1].rpnp = NULL;
3876 im->gdes[im->gdes_c - 1].p_dashes = NULL;
3877 im->gdes[im->gdes_c - 1].shift = 0.0;
3878 im->gdes[im->gdes_c - 1].dash = 0;
3879 im->gdes[im->gdes_c - 1].ndash = 0;
3880 im->gdes[im->gdes_c - 1].offset = 0;
3881 im->gdes[im->gdes_c - 1].col.red = 0.0;
3882 im->gdes[im->gdes_c - 1].col.green = 0.0;
3883 im->gdes[im->gdes_c - 1].col.blue = 0.0;
3884 im->gdes[im->gdes_c - 1].col.alpha = 0.0;
3885 im->gdes[im->gdes_c - 1].col2.red = 0.0;
3886 im->gdes[im->gdes_c - 1].col2.green = 0.0;
3887 im->gdes[im->gdes_c - 1].col2.blue = 0.0;
3888 im->gdes[im->gdes_c - 1].col2.alpha = 0.0;
3889 im->gdes[im->gdes_c - 1].gradheight = 50.0;
3890 im->gdes[im->gdes_c - 1].legend[0] = '\0';
3891 im->gdes[im->gdes_c - 1].format[0] = '\0';
3892 im->gdes[im->gdes_c - 1].strftm = 0;
3893 im->gdes[im->gdes_c - 1].rrd[0] = '\0';
3894 im->gdes[im->gdes_c - 1].ds = -1;
3895 im->gdes[im->gdes_c - 1].cf_reduce = CF_AVERAGE;
3896 im->gdes[im->gdes_c - 1].cf = CF_AVERAGE;
3897 im->gdes[im->gdes_c - 1].yrule = DNAN;
3898 im->gdes[im->gdes_c - 1].xrule = 0;
3899 im->gdes[im->gdes_c - 1].daemon[0] = 0;
3900 return 0;
3901 }
3903 /* copies input untill the first unescaped colon is found
3904 or until input ends. backslashes have to be escaped as well */
3905 int scan_for_col(
3906 const char *const input,
3907 int len,
3908 char *const output)
3909 {
3910 int inp, outp = 0;
3912 for (inp = 0; inp < len && input[inp] != ':' && input[inp] != '\0'; inp++) {
3913 if (input[inp] == '\\'
3914 && input[inp + 1] != '\0'
3915 && (input[inp + 1] == '\\' || input[inp + 1] == ':')) {
3916 output[outp++] = input[++inp];
3917 } else {
3918 output[outp++] = input[inp];
3919 }
3920 }
3921 output[outp] = '\0';
3922 return inp;
3923 }
3925 /* Now just a wrapper around rrd_graph_v */
3926 int rrd_graph(
3927 int argc,
3928 char **argv,
3929 char ***prdata,
3930 int *xsize,
3931 int *ysize,
3932 FILE * stream,
3933 double *ymin,
3934 double *ymax)
3935 {
3936 int prlines = 0;
3937 rrd_info_t *grinfo = NULL;
3938 rrd_info_t *walker;
3940 grinfo = rrd_graph_v(argc, argv);
3941 if (grinfo == NULL)
3942 return -1;
3943 walker = grinfo;
3944 (*prdata) = NULL;
3945 while (walker) {
3946 if (strcmp(walker->key, "image_info") == 0) {
3947 prlines++;
3948 if (((*prdata) =
3949 (char**)rrd_realloc((*prdata),
3950 (prlines + 1) * sizeof(char *))) == NULL) {
3951 rrd_set_error("realloc prdata");
3952 return 0;
3953 }
3954 /* imginfo goes to position 0 in the prdata array */
3955 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
3956 + 2) * sizeof(char));
3957 strcpy((*prdata)[prlines - 1], walker->value.u_str);
3958 (*prdata)[prlines] = NULL;
3959 }
3960 /* skip anything else */
3961 walker = walker->next;
3962 }
3963 walker = grinfo;
3964 *xsize = 0;
3965 *ysize = 0;
3966 *ymin = 0;
3967 *ymax = 0;
3968 while (walker) {
3969 if (strcmp(walker->key, "image_width") == 0) {
3970 *xsize = walker->value.u_cnt;
3971 } else if (strcmp(walker->key, "image_height") == 0) {
3972 *ysize = walker->value.u_cnt;
3973 } else if (strcmp(walker->key, "value_min") == 0) {
3974 *ymin = walker->value.u_val;
3975 } else if (strcmp(walker->key, "value_max") == 0) {
3976 *ymax = walker->value.u_val;
3977 } else if (strncmp(walker->key, "print", 5) == 0) { /* keys are prdate[0..] */
3978 prlines++;
3979 if (((*prdata) =
3980 (char**)rrd_realloc((*prdata),
3981 (prlines + 1) * sizeof(char *))) == NULL) {
3982 rrd_set_error("realloc prdata");
3983 return 0;
3984 }
3985 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
3986 + 2) * sizeof(char));
3987 (*prdata)[prlines] = NULL;
3988 strcpy((*prdata)[prlines - 1], walker->value.u_str);
3989 } else if (strcmp(walker->key, "image") == 0) {
3990 if ( fwrite(walker->value.u_blo.ptr, walker->value.u_blo.size, 1,
3991 (stream ? stream : stdout)) == 0 && ferror(stream ? stream : stdout)){
3992 rrd_set_error("writing image");
3993 return 0;
3994 }
3995 }
3996 /* skip anything else */
3997 walker = walker->next;
3998 }
3999 rrd_info_free(grinfo);
4000 return 0;
4001 }
4004 /* Some surgery done on this function, it became ridiculously big.
4005 ** Things moved:
4006 ** - initializing now in rrd_graph_init()
4007 ** - options parsing now in rrd_graph_options()
4008 ** - script parsing now in rrd_graph_script()
4009 */
4010 rrd_info_t *rrd_graph_v(
4011 int argc,
4012 char **argv)
4013 {
4014 image_desc_t im;
4015 rrd_info_t *grinfo;
4016 char *old_locale;
4017 rrd_graph_init(&im);
4018 /* a dummy surface so that we can measure text sizes for placements */
4019 old_locale = setlocale(LC_NUMERIC, NULL);
4020 setlocale(LC_NUMERIC, "C");
4021 rrd_graph_options(argc, argv, &im);
4022 if (rrd_test_error()) {
4023 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4024 rrd_info_free(im.grinfo);
4025 im_free(&im);
4026 return NULL;
4027 }
4029 if (optind >= argc) {
4030 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4031 rrd_info_free(im.grinfo);
4032 im_free(&im);
4033 rrd_set_error("missing filename");
4034 return NULL;
4035 }
4037 if (strlen(argv[optind]) >= MAXPATH) {
4038 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4039 rrd_set_error("filename (including path) too long");
4040 rrd_info_free(im.grinfo);
4041 im_free(&im);
4042 return NULL;
4043 }
4045 strncpy(im.graphfile, argv[optind], MAXPATH - 1);
4046 im.graphfile[MAXPATH - 1] = '\0';
4048 if (strcmp(im.graphfile, "-") == 0) {
4049 im.graphfile[0] = '\0';
4050 }
4052 rrd_graph_script(argc, argv, &im, 1);
4053 setlocale(LC_NUMERIC, old_locale); /* reenable locale for rendering the graph */
4055 if (rrd_test_error()) {
4056 rrd_info_free(im.grinfo);
4057 im_free(&im);
4058 return NULL;
4059 }
4061 /* Everything is now read and the actual work can start */
4063 if (graph_paint(&im) == -1) {
4064 rrd_info_free(im.grinfo);
4065 im_free(&im);
4066 return NULL;
4067 }
4070 /* The image is generated and needs to be output.
4071 ** Also, if needed, print a line with information about the image.
4072 */
4074 if (im.imginfo) {
4075 rrd_infoval_t info;
4076 char *path;
4077 char *filename;
4079 path = strdup(im.graphfile);
4080 filename = basename(path);
4081 info.u_str =
4082 sprintf_alloc(im.imginfo,
4083 filename,
4084 (long) (im.zoom *
4085 im.ximg), (long) (im.zoom * im.yimg));
4086 grinfo_push(&im, sprintf_alloc("image_info"), RD_I_STR, info);
4087 free(info.u_str);
4088 free(path);
4089 }
4090 if (im.rendered_image) {
4091 rrd_infoval_t img;
4093 img.u_blo.size = im.rendered_image_size;
4094 img.u_blo.ptr = im.rendered_image;
4095 grinfo_push(&im, sprintf_alloc("image"), RD_I_BLO, img);
4096 }
4097 grinfo = im.grinfo;
4098 im_free(&im);
4099 return grinfo;
4100 }
4102 static void
4103 rrd_set_font_desc (
4104 image_desc_t *im,int prop,char *font, double size ){
4105 if (font){
4106 strncpy(im->text_prop[prop].font, font, sizeof(text_prop[prop].font) - 1);
4107 im->text_prop[prop].font[sizeof(text_prop[prop].font) - 1] = '\0';
4108 /* if we already got one, drop it first */
4109 pango_font_description_free(im->text_prop[prop].font_desc);
4110 im->text_prop[prop].font_desc = pango_font_description_from_string( font );
4111 };
4112 if (size > 0){
4113 im->text_prop[prop].size = size;
4114 };
4115 if (im->text_prop[prop].font_desc && im->text_prop[prop].size ){
4116 pango_font_description_set_size(im->text_prop[prop].font_desc, im->text_prop[prop].size * PANGO_SCALE);
4117 };
4118 }
4120 void rrd_graph_init(
4121 image_desc_t
4122 *im)
4123 {
4124 unsigned int i;
4125 char *deffont = getenv("RRD_DEFAULT_FONT");
4126 static PangoFontMap *fontmap = NULL;
4127 PangoContext *context;
4129 #ifdef HAVE_TZSET
4130 tzset();
4131 #endif
4133 im->base = 1000;
4134 im->daemon_addr = NULL;
4135 im->draw_x_grid = 1;
4136 im->draw_y_grid = 1;
4137 im->draw_3d_border = 2;
4138 im->dynamic_labels = 0;
4139 im->extra_flags = 0;
4140 im->font_options = cairo_font_options_create();
4141 im->forceleftspace = 0;
4142 im->gdes_c = 0;
4143 im->gdes = NULL;
4144 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4145 im->grid_dash_off = 1;
4146 im->grid_dash_on = 1;
4147 im->gridfit = 1;
4148 im->grinfo = (rrd_info_t *) NULL;
4149 im->grinfo_current = (rrd_info_t *) NULL;
4150 im->imgformat = IF_PNG;
4151 im->imginfo = NULL;
4152 im->lazy = 0;
4153 im->legenddirection = TOP_DOWN;
4154 im->legendheight = 0;
4155 im->legendposition = SOUTH;
4156 im->legendwidth = 0;
4157 im->logarithmic = 0;
4158 im->maxval = DNAN;
4159 im->minval = 0;
4160 im->minval = DNAN;
4161 im->magfact = 1;
4162 im->prt_c = 0;
4163 im->rigid = 0;
4164 im->rendered_image_size = 0;
4165 im->rendered_image = NULL;
4166 im->slopemode = 0;
4167 im->step = 0;
4168 im->symbol = ' ';
4169 im->tabwidth = 40.0;
4170 im->title[0] = '\0';
4171 im->unitsexponent = 9999;
4172 im->unitslength = 6;
4173 im->viewfactor = 1.0;
4174 im->watermark[0] = '\0';
4175 im->with_markup = 0;
4176 im->ximg = 0;
4177 im->xlab_user.minsec = -1;
4178 im->xorigin = 0;
4179 im->xOriginLegend = 0;
4180 im->xOriginLegendY = 0;
4181 im->xOriginLegendY2 = 0;
4182 im->xOriginTitle = 0;
4183 im->xsize = 400;
4184 im->ygridstep = DNAN;
4185 im->yimg = 0;
4186 im->ylegend[0] = '\0';
4187 im->second_axis_scale = 0; /* 0 disables it */
4188 im->second_axis_shift = 0; /* no shift by default */
4189 im->second_axis_legend[0] = '\0';
4190 im->second_axis_format[0] = '\0';
4191 im->yorigin = 0;
4192 im->yOriginLegend = 0;
4193 im->yOriginLegendY = 0;
4194 im->yOriginLegendY2 = 0;
4195 im->yOriginTitle = 0;
4196 im->ysize = 100;
4197 im->zoom = 1;
4199 im->surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 10, 10);
4200 im->cr = cairo_create(im->surface);
4202 for (i = 0; i < DIM(text_prop); i++) {
4203 im->text_prop[i].size = -1;
4204 im->text_prop[i].font_desc = NULL;
4205 rrd_set_font_desc(im,i, deffont ? deffont : text_prop[i].font,text_prop[i].size);
4206 }
4208 if (fontmap == NULL){
4209 fontmap = pango_cairo_font_map_get_default();
4210 }
4212 context = pango_cairo_font_map_create_context((PangoCairoFontMap*)fontmap);
4214 pango_cairo_context_set_resolution(context, 100);
4216 pango_cairo_update_context(im->cr,context);
4218 im->layout = pango_layout_new(context);
4219 g_object_unref (context);
4221 // im->layout = pango_cairo_create_layout(im->cr);
4224 cairo_font_options_set_hint_style
4225 (im->font_options, CAIRO_HINT_STYLE_FULL);
4226 cairo_font_options_set_hint_metrics
4227 (im->font_options, CAIRO_HINT_METRICS_ON);
4228 cairo_font_options_set_antialias(im->font_options, CAIRO_ANTIALIAS_GRAY);
4232 for (i = 0; i < DIM(graph_col); i++)
4233 im->graph_col[i] = graph_col[i];
4236 }
4239 void rrd_graph_options(
4240 int argc,
4241 char *argv[],
4242 image_desc_t
4243 *im)
4244 {
4245 int stroff;
4246 char *parsetime_error = NULL;
4247 char scan_gtm[12], scan_mtm[12], scan_ltm[12], col_nam[12];
4248 time_t start_tmp = 0, end_tmp = 0;
4249 long long_tmp;
4250 rrd_time_value_t start_tv, end_tv;
4251 long unsigned int color;
4253 /* defines for long options without a short equivalent. should be bytes,
4254 and may not collide with (the ASCII value of) short options */
4255 #define LONGOPT_UNITS_SI 255
4257 /* *INDENT-OFF* */
4258 struct option long_options[] = {
4259 { "alt-autoscale", no_argument, 0, 'A'},
4260 { "imgformat", required_argument, 0, 'a'},
4261 { "font-smoothing-threshold", required_argument, 0, 'B'},
4262 { "base", required_argument, 0, 'b'},
4263 { "color", required_argument, 0, 'c'},
4264 { "full-size-mode", no_argument, 0, 'D'},
4265 { "daemon", required_argument, 0, 'd'},
4266 { "slope-mode", no_argument, 0, 'E'},
4267 { "end", required_argument, 0, 'e'},
4268 { "force-rules-legend", no_argument, 0, 'F'},
4269 { "imginfo", required_argument, 0, 'f'},
4270 { "graph-render-mode", required_argument, 0, 'G'},
4271 { "no-legend", no_argument, 0, 'g'},
4272 { "height", required_argument, 0, 'h'},
4273 { "no-minor", no_argument, 0, 'I'},
4274 { "interlaced", no_argument, 0, 'i'},
4275 { "alt-autoscale-min", no_argument, 0, 'J'},
4276 { "only-graph", no_argument, 0, 'j'},
4277 { "units-length", required_argument, 0, 'L'},
4278 { "lower-limit", required_argument, 0, 'l'},
4279 { "alt-autoscale-max", no_argument, 0, 'M'},
4280 { "zoom", required_argument, 0, 'm'},
4281 { "no-gridfit", no_argument, 0, 'N'},
4282 { "font", required_argument, 0, 'n'},
4283 { "logarithmic", no_argument, 0, 'o'},
4284 { "pango-markup", no_argument, 0, 'P'},
4285 { "font-render-mode", required_argument, 0, 'R'},
4286 { "rigid", no_argument, 0, 'r'},
4287 { "step", required_argument, 0, 'S'},
4288 { "start", required_argument, 0, 's'},
4289 { "tabwidth", required_argument, 0, 'T'},
4290 { "title", required_argument, 0, 't'},
4291 { "upper-limit", required_argument, 0, 'u'},
4292 { "vertical-label", required_argument, 0, 'v'},
4293 { "watermark", required_argument, 0, 'W'},
4294 { "width", required_argument, 0, 'w'},
4295 { "units-exponent", required_argument, 0, 'X'},
4296 { "x-grid", required_argument, 0, 'x'},
4297 { "alt-y-grid", no_argument, 0, 'Y'},
4298 { "y-grid", required_argument, 0, 'y'},
4299 { "lazy", no_argument, 0, 'z'},
4300 { "units", required_argument, 0, LONGOPT_UNITS_SI},
4301 { "alt-y-mrtg", no_argument, 0, 1000}, /* this has no effect it is just here to save old apps from crashing when they use it */
4302 { "disable-rrdtool-tag",no_argument, 0, 1001},
4303 { "right-axis", required_argument, 0, 1002},
4304 { "right-axis-label", required_argument, 0, 1003},
4305 { "right-axis-format", required_argument, 0, 1004},
4306 { "legend-position", required_argument, 0, 1005},
4307 { "legend-direction", required_argument, 0, 1006},
4308 { "border", required_argument, 0, 1007},
4309 { "grid-dash", required_argument, 0, 1008},
4310 { "dynamic-labels", no_argument, 0, 1009},
4311 { "week-fmt", required_argument, 0, 1010},
4312 { 0, 0, 0, 0}
4313 };
4314 /* *INDENT-ON* */
4316 optind = 0;
4317 opterr = 0; /* initialize getopt */
4318 rrd_parsetime("end-24h", &start_tv);
4319 rrd_parsetime("now", &end_tv);
4320 while (1) {
4321 int option_index = 0;
4322 int opt;
4323 int col_start, col_end;
4325 opt = getopt_long(argc, argv,
4326 "Aa:B:b:c:Dd:Ee:Ff:G:gh:IiJjL:l:Mm:Nn:oPR:rS:s:T:t:u:v:W:w:X:x:Yy:z",
4327 long_options, &option_index);
4328 if (opt == EOF)
4329 break;
4330 switch (opt) {
4331 case 'I':
4332 im->extra_flags |= NOMINOR;
4333 break;
4334 case 'Y':
4335 im->extra_flags |= ALTYGRID;
4336 break;
4337 case 'A':
4338 im->extra_flags |= ALTAUTOSCALE;
4339 break;
4340 case 'J':
4341 im->extra_flags |= ALTAUTOSCALE_MIN;
4342 break;
4343 case 'M':
4344 im->extra_flags |= ALTAUTOSCALE_MAX;
4345 break;
4346 case 'j':
4347 im->extra_flags |= ONLY_GRAPH;
4348 break;
4349 case 'g':
4350 im->extra_flags |= NOLEGEND;
4351 break;
4352 case 1005:
4353 if (strcmp(optarg, "north") == 0) {
4354 im->legendposition = NORTH;
4355 } else if (strcmp(optarg, "west") == 0) {
4356 im->legendposition = WEST;
4357 } else if (strcmp(optarg, "south") == 0) {
4358 im->legendposition = SOUTH;
4359 } else if (strcmp(optarg, "east") == 0) {
4360 im->legendposition = EAST;
4361 } else {
4362 rrd_set_error("unknown legend-position '%s'", optarg);
4363 return;
4364 }
4365 break;
4366 case 1006:
4367 if (strcmp(optarg, "topdown") == 0) {
4368 im->legenddirection = TOP_DOWN;
4369 } else if (strcmp(optarg, "bottomup") == 0) {
4370 im->legenddirection = BOTTOM_UP;
4371 } else {
4372 rrd_set_error("unknown legend-position '%s'", optarg);
4373 return;
4374 }
4375 break;
4376 case 'F':
4377 im->extra_flags |= FORCE_RULES_LEGEND;
4378 break;
4379 case 1001:
4380 im->extra_flags |= NO_RRDTOOL_TAG;
4381 break;
4382 case LONGOPT_UNITS_SI:
4383 if (im->extra_flags & FORCE_UNITS) {
4384 rrd_set_error("--units can only be used once!");
4385 return;
4386 }
4387 if (strcmp(optarg, "si") == 0)
4388 im->extra_flags |= FORCE_UNITS_SI;
4389 else {
4390 rrd_set_error("invalid argument for --units: %s", optarg);
4391 return;
4392 }
4393 break;
4394 case 'X':
4395 im->unitsexponent = atoi(optarg);
4396 break;
4397 case 'L':
4398 im->unitslength = atoi(optarg);
4399 im->forceleftspace = 1;
4400 break;
4401 case 'T':
4402 im->tabwidth = atof(optarg);
4403 break;
4404 case 'S':
4405 im->step = atoi(optarg);
4406 break;
4407 case 'N':
4408 im->gridfit = 0;
4409 break;
4410 case 'P':
4411 im->with_markup = 1;
4412 break;
4413 case 's':
4414 if ((parsetime_error = rrd_parsetime(optarg, &start_tv))) {
4415 rrd_set_error("start time: %s", parsetime_error);
4416 return;
4417 }
4418 break;
4419 case 'e':
4420 if ((parsetime_error = rrd_parsetime(optarg, &end_tv))) {
4421 rrd_set_error("end time: %s", parsetime_error);
4422 return;
4423 }
4424 break;
4425 case 'x':
4426 if (strcmp(optarg, "none") == 0) {
4427 im->draw_x_grid = 0;
4428 break;
4429 };
4430 if (sscanf(optarg,
4431 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
4432 scan_gtm,
4433 &im->xlab_user.gridst,
4434 scan_mtm,
4435 &im->xlab_user.mgridst,
4436 scan_ltm,
4437 &im->xlab_user.labst,
4438 &im->xlab_user.precis, &stroff) == 7 && stroff != 0) {
4439 strncpy(im->xlab_form, optarg + stroff,
4440 sizeof(im->xlab_form) - 1);
4441 im->xlab_form[sizeof(im->xlab_form) - 1] = '\0';
4442 if ((int)
4443 (im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1) {
4444 rrd_set_error("unknown keyword %s", scan_gtm);
4445 return;
4446 } else if ((int)
4447 (im->xlab_user.mgridtm = tmt_conv(scan_mtm))
4448 == -1) {
4449 rrd_set_error("unknown keyword %s", scan_mtm);
4450 return;
4451 } else if ((int)
4452 (im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1) {
4453 rrd_set_error("unknown keyword %s", scan_ltm);
4454 return;
4455 }
4456 im->xlab_user.minsec = 1;
4457 im->xlab_user.stst = im->xlab_form;
4458 } else {
4459 rrd_set_error("invalid x-grid format");
4460 return;
4461 }
4462 break;
4463 case 'y':
4465 if (strcmp(optarg, "none") == 0) {
4466 im->draw_y_grid = 0;
4467 break;
4468 };
4469 if (sscanf(optarg, "%lf:%d", &im->ygridstep, &im->ylabfact) == 2) {
4470 if (im->ygridstep <= 0) {
4471 rrd_set_error("grid step must be > 0");
4472 return;
4473 } else if (im->ylabfact < 1) {
4474 rrd_set_error("label factor must be > 0");
4475 return;
4476 }
4477 } else {
4478 rrd_set_error("invalid y-grid format");
4479 return;
4480 }
4481 break;
4482 case 1007:
4483 im->draw_3d_border = atoi(optarg);
4484 break;
4485 case 1008: /* grid-dash */
4486 if(sscanf(optarg,
4487 "%lf:%lf",
4488 &im->grid_dash_on,
4489 &im->grid_dash_off) != 2) {
4490 rrd_set_error("expected grid-dash format float:float");
4491 return;
4492 }
4493 break;
4494 case 1009: /* enable dynamic labels */
4495 im->dynamic_labels = 1;
4496 break;
4497 case 1010:
4498 strncpy(week_fmt,optarg,sizeof week_fmt);
4499 week_fmt[(sizeof week_fmt)-1]='\0';
4500 break;
4501 case 1002: /* right y axis */
4503 if(sscanf(optarg,
4504 "%lf:%lf",
4505 &im->second_axis_scale,
4506 &im->second_axis_shift) == 2) {
4507 if(im->second_axis_scale==0){
4508 rrd_set_error("the second_axis_scale must not be 0");
4509 return;
4510 }
4511 } else {
4512 rrd_set_error("invalid right-axis format expected scale:shift");
4513 return;
4514 }
4515 break;
4516 case 1003:
4517 strncpy(im->second_axis_legend,optarg,150);
4518 im->second_axis_legend[150]='\0';
4519 break;
4520 case 1004:
4521 if (bad_format(optarg)){
4522 rrd_set_error("use either %le or %lf formats");
4523 return;
4524 }
4525 strncpy(im->second_axis_format,optarg,150);
4526 im->second_axis_format[150]='\0';
4527 break;
4528 case 'v':
4529 strncpy(im->ylegend, optarg, 150);
4530 im->ylegend[150] = '\0';
4531 break;
4532 case 'u':
4533 im->maxval = atof(optarg);
4534 break;
4535 case 'l':
4536 im->minval = atof(optarg);
4537 break;
4538 case 'b':
4539 im->base = atol(optarg);
4540 if (im->base != 1024 && im->base != 1000) {
4541 rrd_set_error
4542 ("the only sensible value for base apart from 1000 is 1024");
4543 return;
4544 }
4545 break;
4546 case 'w':
4547 long_tmp = atol(optarg);
4548 if (long_tmp < 10) {
4549 rrd_set_error("width below 10 pixels");
4550 return;
4551 }
4552 im->xsize = long_tmp;
4553 break;
4554 case 'h':
4555 long_tmp = atol(optarg);
4556 if (long_tmp < 10) {
4557 rrd_set_error("height below 10 pixels");
4558 return;
4559 }
4560 im->ysize = long_tmp;
4561 break;
4562 case 'D':
4563 im->extra_flags |= FULL_SIZE_MODE;
4564 break;
4565 case 'i':
4566 /* interlaced png not supported at the moment */
4567 break;
4568 case 'r':
4569 im->rigid = 1;
4570 break;
4571 case 'f':
4572 im->imginfo = optarg;
4573 break;
4574 case 'a':
4575 if ((int)
4576 (im->imgformat = if_conv(optarg)) == -1) {
4577 rrd_set_error("unsupported graphics format '%s'", optarg);
4578 return;
4579 }
4580 break;
4581 case 'z':
4582 im->lazy = 1;
4583 break;
4584 case 'E':
4585 im->slopemode = 1;
4586 break;
4587 case 'o':
4588 im->logarithmic = 1;
4589 break;
4590 case 'c':
4591 if (sscanf(optarg,
4592 "%10[A-Z]#%n%8lx%n",
4593 col_nam, &col_start, &color, &col_end) == 2) {
4594 int ci;
4595 int col_len = col_end - col_start;
4597 switch (col_len) {
4598 case 3:
4599 color =
4600 (((color & 0xF00) * 0x110000) | ((color & 0x0F0) *
4601 0x011000) |
4602 ((color & 0x00F)
4603 * 0x001100)
4604 | 0x000000FF);
4605 break;
4606 case 4:
4607 color =
4608 (((color & 0xF000) *
4609 0x11000) | ((color & 0x0F00) *
4610 0x01100) | ((color &
4611 0x00F0) *
4612 0x00110) |
4613 ((color & 0x000F) * 0x00011)
4614 );
4615 break;
4616 case 6:
4617 color = (color << 8) + 0xff /* shift left by 8 */ ;
4618 break;
4619 case 8:
4620 break;
4621 default:
4622 rrd_set_error("the color format is #RRGGBB[AA]");
4623 return;
4624 }
4625 if ((ci = grc_conv(col_nam)) != -1) {
4626 im->graph_col[ci] = gfx_hex_to_col(color);
4627 } else {
4628 rrd_set_error("invalid color name '%s'", col_nam);
4629 return;
4630 }
4631 } else {
4632 rrd_set_error("invalid color def format");
4633 return;
4634 }
4635 break;
4636 case 'n':{
4637 char prop[15];
4638 double size = 1;
4639 int end;
4641 if (sscanf(optarg, "%10[A-Z]:%lf%n", prop, &size, &end) >= 2) {
4642 int sindex, propidx;
4644 if ((sindex = text_prop_conv(prop)) != -1) {
4645 for (propidx = sindex;
4646 propidx < TEXT_PROP_LAST; propidx++) {
4647 if (size > 0) {
4648 rrd_set_font_desc(im,propidx,NULL,size);
4649 }
4650 if ((int) strlen(optarg) > end+2) {
4651 if (optarg[end] == ':') {
4652 rrd_set_font_desc(im,propidx,optarg + end + 1,0);
4653 } else {
4654 rrd_set_error
4655 ("expected : after font size in '%s'",
4656 optarg);
4657 return;
4658 }
4659 }
4660 /* only run the for loop for DEFAULT (0) for
4661 all others, we break here. woodo programming */
4662 if (propidx == sindex && sindex != 0)
4663 break;
4664 }
4665 } else {
4666 rrd_set_error("invalid fonttag '%s'", prop);
4667 return;
4668 }
4669 } else {
4670 rrd_set_error("invalid text property format");
4671 return;
4672 }
4673 break;
4674 }
4675 case 'm':
4676 im->zoom = atof(optarg);
4677 if (im->zoom <= 0.0) {
4678 rrd_set_error("zoom factor must be > 0");
4679 return;
4680 }
4681 break;
4682 case 't':
4683 strncpy(im->title, optarg, 150);
4684 im->title[150] = '\0';
4685 break;
4686 case 'R':
4687 if (strcmp(optarg, "normal") == 0) {
4688 cairo_font_options_set_antialias
4689 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4690 cairo_font_options_set_hint_style
4691 (im->font_options, CAIRO_HINT_STYLE_FULL);
4692 } else if (strcmp(optarg, "light") == 0) {
4693 cairo_font_options_set_antialias
4694 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4695 cairo_font_options_set_hint_style
4696 (im->font_options, CAIRO_HINT_STYLE_SLIGHT);
4697 } else if (strcmp(optarg, "mono") == 0) {
4698 cairo_font_options_set_antialias
4699 (im->font_options, CAIRO_ANTIALIAS_NONE);
4700 cairo_font_options_set_hint_style
4701 (im->font_options, CAIRO_HINT_STYLE_FULL);
4702 } else {
4703 rrd_set_error("unknown font-render-mode '%s'", optarg);
4704 return;
4705 }
4706 break;
4707 case 'G':
4708 if (strcmp(optarg, "normal") == 0)
4709 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4710 else if (strcmp(optarg, "mono") == 0)
4711 im->graph_antialias = CAIRO_ANTIALIAS_NONE;
4712 else {
4713 rrd_set_error("unknown graph-render-mode '%s'", optarg);
4714 return;
4715 }
4716 break;
4717 case 'B':
4718 /* not supported curently */
4719 break;
4720 case 'W':
4721 strncpy(im->watermark, optarg, 100);
4722 im->watermark[99] = '\0';
4723 break;
4724 case 'd':
4725 {
4726 if (im->daemon_addr != NULL)
4727 {
4728 rrd_set_error ("You cannot specify --daemon "
4729 "more than once.");
4730 return;
4731 }
4733 im->daemon_addr = strdup(optarg);
4734 if (im->daemon_addr == NULL)
4735 {
4736 rrd_set_error("strdup failed");
4737 return;
4738 }
4740 break;
4741 }
4742 case '?':
4743 if (optopt != 0)
4744 rrd_set_error("unknown option '%c'", optopt);
4745 else
4746 rrd_set_error("unknown option '%s'", argv[optind - 1]);
4747 return;
4748 }
4749 } /* while (1) */
4751 pango_cairo_context_set_font_options(pango_layout_get_context(im->layout), im->font_options);
4752 pango_layout_context_changed(im->layout);
4756 if (im->logarithmic && im->minval <= 0) {
4757 rrd_set_error
4758 ("for a logarithmic yaxis you must specify a lower-limit > 0");
4759 return;
4760 }
4762 if (rrd_proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
4763 /* error string is set in rrd_parsetime.c */
4764 return;
4765 }
4767 if (start_tmp < 3600 * 24 * 365 * 10) {
4768 rrd_set_error
4769 ("the first entry to fetch should be after 1980 (%ld)",
4770 start_tmp);
4771 return;
4772 }
4774 if (end_tmp < start_tmp) {
4775 rrd_set_error
4776 ("start (%ld) should be less than end (%ld)", start_tmp, end_tmp);
4777 return;
4778 }
4780 im->start = start_tmp;
4781 im->end = end_tmp;
4782 im->step = max((long) im->step, (im->end - im->start) / im->xsize);
4783 }
4785 int rrd_graph_color(
4786 image_desc_t
4787 *im,
4788 char *var,
4789 char *err,
4790 int optional)
4791 {
4792 char *color;
4793 graph_desc_t *gdp = &im->gdes[im->gdes_c - 1];
4795 color = strstr(var, "#");
4796 if (color == NULL) {
4797 if (optional == 0) {
4798 rrd_set_error("Found no color in %s", err);
4799 return 0;
4800 }
4801 return 0;
4802 } else {
4803 int n = 0;
4804 char *rest;
4805 long unsigned int col;
4807 rest = strstr(color, ":");
4808 if (rest != NULL)
4809 n = rest - color;
4810 else
4811 n = strlen(color);
4812 switch (n) {
4813 case 7:
4814 sscanf(color, "#%6lx%n", &col, &n);
4815 col = (col << 8) + 0xff /* shift left by 8 */ ;
4816 if (n != 7)
4817 rrd_set_error("Color problem in %s", err);
4818 break;
4819 case 9:
4820 sscanf(color, "#%8lx%n", &col, &n);
4821 if (n == 9)
4822 break;
4823 default:
4824 rrd_set_error("Color problem in %s", err);
4825 }
4826 if (rrd_test_error())
4827 return 0;
4828 gdp->col = gfx_hex_to_col(col);
4829 return n;
4830 }
4831 }
4834 int bad_format(
4835 char *fmt)
4836 {
4837 char *ptr;
4838 int n = 0;
4840 ptr = fmt;
4841 while (*ptr != '\0')
4842 if (*ptr++ == '%') {
4844 /* line cannot end with percent char */
4845 if (*ptr == '\0')
4846 return 1;
4847 /* '%s', '%S' and '%%' are allowed */
4848 if (*ptr == 's' || *ptr == 'S' || *ptr == '%')
4849 ptr++;
4850 /* %c is allowed (but use only with vdef!) */
4851 else if (*ptr == 'c') {
4852 ptr++;
4853 n = 1;
4854 }
4856 /* or else '% 6.2lf' and such are allowed */
4857 else {
4858 /* optional padding character */
4859 if (*ptr == ' ' || *ptr == '+' || *ptr == '-')
4860 ptr++;
4861 /* This should take care of 'm.n' with all three optional */
4862 while (*ptr >= '0' && *ptr <= '9')
4863 ptr++;
4864 if (*ptr == '.')
4865 ptr++;
4866 while (*ptr >= '0' && *ptr <= '9')
4867 ptr++;
4868 /* Either 'le', 'lf' or 'lg' must follow here */
4869 if (*ptr++ != 'l')
4870 return 1;
4871 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g')
4872 ptr++;
4873 else
4874 return 1;
4875 n++;
4876 }
4877 }
4879 return (n != 1);
4880 }
4883 int vdef_parse(
4884 struct graph_desc_t
4885 *gdes,
4886 const char *const str)
4887 {
4888 /* A VDEF currently is either "func" or "param,func"
4889 * so the parsing is rather simple. Change if needed.
4890 */
4891 double param;
4892 char func[30];
4893 int n;
4895 n = 0;
4896 sscanf(str, "%le,%29[A-Z]%n", ¶m, func, &n);
4897 if (n == (int) strlen(str)) { /* matched */
4898 ;
4899 } else {
4900 n = 0;
4901 sscanf(str, "%29[A-Z]%n", func, &n);
4902 if (n == (int) strlen(str)) { /* matched */
4903 param = DNAN;
4904 } else {
4905 rrd_set_error
4906 ("Unknown function string '%s' in VDEF '%s'",
4907 str, gdes->vname);
4908 return -1;
4909 }
4910 }
4911 if (!strcmp("PERCENT", func))
4912 gdes->vf.op = VDEF_PERCENT;
4913 else if (!strcmp("PERCENTNAN", func))
4914 gdes->vf.op = VDEF_PERCENTNAN;
4915 else if (!strcmp("MAXIMUM", func))
4916 gdes->vf.op = VDEF_MAXIMUM;
4917 else if (!strcmp("AVERAGE", func))
4918 gdes->vf.op = VDEF_AVERAGE;
4919 else if (!strcmp("STDEV", func))
4920 gdes->vf.op = VDEF_STDEV;
4921 else if (!strcmp("MINIMUM", func))
4922 gdes->vf.op = VDEF_MINIMUM;
4923 else if (!strcmp("TOTAL", func))
4924 gdes->vf.op = VDEF_TOTAL;
4925 else if (!strcmp("FIRST", func))
4926 gdes->vf.op = VDEF_FIRST;
4927 else if (!strcmp("LAST", func))
4928 gdes->vf.op = VDEF_LAST;
4929 else if (!strcmp("LSLSLOPE", func))
4930 gdes->vf.op = VDEF_LSLSLOPE;
4931 else if (!strcmp("LSLINT", func))
4932 gdes->vf.op = VDEF_LSLINT;
4933 else if (!strcmp("LSLCORREL", func))
4934 gdes->vf.op = VDEF_LSLCORREL;
4935 else {
4936 rrd_set_error
4937 ("Unknown function '%s' in VDEF '%s'\n", func, gdes->vname);
4938 return -1;
4939 };
4940 switch (gdes->vf.op) {
4941 case VDEF_PERCENT:
4942 case VDEF_PERCENTNAN:
4943 if (isnan(param)) { /* no parameter given */
4944 rrd_set_error
4945 ("Function '%s' needs parameter in VDEF '%s'\n",
4946 func, gdes->vname);
4947 return -1;
4948 };
4949 if (param >= 0.0 && param <= 100.0) {
4950 gdes->vf.param = param;
4951 gdes->vf.val = DNAN; /* undefined */
4952 gdes->vf.when = 0; /* undefined */
4953 gdes->vf.never = 1;
4954 } else {
4955 rrd_set_error
4956 ("Parameter '%f' out of range in VDEF '%s'\n",
4957 param, gdes->vname);
4958 return -1;
4959 };
4960 break;
4961 case VDEF_MAXIMUM:
4962 case VDEF_AVERAGE:
4963 case VDEF_STDEV:
4964 case VDEF_MINIMUM:
4965 case VDEF_TOTAL:
4966 case VDEF_FIRST:
4967 case VDEF_LAST:
4968 case VDEF_LSLSLOPE:
4969 case VDEF_LSLINT:
4970 case VDEF_LSLCORREL:
4971 if (isnan(param)) {
4972 gdes->vf.param = DNAN;
4973 gdes->vf.val = DNAN;
4974 gdes->vf.when = 0;
4975 gdes->vf.never = 1;
4976 } else {
4977 rrd_set_error
4978 ("Function '%s' needs no parameter in VDEF '%s'\n",
4979 func, gdes->vname);
4980 return -1;
4981 };
4982 break;
4983 };
4984 return 0;
4985 }
4988 int vdef_calc(
4989 image_desc_t *im,
4990 int gdi)
4991 {
4992 graph_desc_t *src, *dst;
4993 rrd_value_t *data;
4994 long step, steps;
4996 dst = &im->gdes[gdi];
4997 src = &im->gdes[dst->vidx];
4998 data = src->data + src->ds;
5000 steps = (src->end - src->start) / src->step;
5001 #if 0
5002 printf
5003 ("DEBUG: start == %lu, end == %lu, %lu steps\n",
5004 src->start, src->end, steps);
5005 #endif
5006 switch (dst->vf.op) {
5007 case VDEF_PERCENT:{
5008 rrd_value_t *array;
5009 int field;
5010 if ((array = (rrd_value_t*)malloc(steps * sizeof(double))) == NULL) {
5011 rrd_set_error("malloc VDEV_PERCENT");
5012 return -1;
5013 }
5014 for (step = 0; step < steps; step++) {
5015 array[step] = data[step * src->ds_cnt];
5016 }
5017 qsort(array, step, sizeof(double), vdef_percent_compar);
5018 field = round((dst->vf.param * (double)(steps - 1)) / 100.0);
5019 dst->vf.val = array[field];
5020 dst->vf.when = 0; /* no time component */
5021 dst->vf.never = 1;
5022 free(array);
5023 #if 0
5024 for (step = 0; step < steps; step++)
5025 printf("DEBUG: %3li:%10.2f %c\n",
5026 step, array[step], step == field ? '*' : ' ');
5027 #endif
5028 }
5029 break;
5030 case VDEF_PERCENTNAN:{
5031 rrd_value_t *array;
5032 int field;
5033 /* count number of "valid" values */
5034 int nancount=0;
5035 for (step = 0; step < steps; step++) {
5036 if (!isnan(data[step * src->ds_cnt])) { nancount++; }
5037 }
5038 /* and allocate it */
5039 if ((array = (rrd_value_t*)malloc(nancount * sizeof(double))) == NULL) {
5040 rrd_set_error("malloc VDEV_PERCENT");
5041 return -1;
5042 }
5043 /* and fill it in */
5044 field=0;
5045 for (step = 0; step < steps; step++) {
5046 if (!isnan(data[step * src->ds_cnt])) {
5047 array[field] = data[step * src->ds_cnt];
5048 field++;
5049 }
5050 }
5051 qsort(array, nancount, sizeof(double), vdef_percent_compar);
5052 field = round( dst->vf.param * (double)(nancount - 1) / 100.0);
5053 dst->vf.val = array[field];
5054 dst->vf.when = 0; /* no time component */
5055 dst->vf.never = 1;
5056 free(array);
5057 }
5058 break;
5059 case VDEF_MAXIMUM:
5060 step = 0;
5061 while (step != steps && isnan(data[step * src->ds_cnt]))
5062 step++;
5063 if (step == steps) {
5064 dst->vf.val = DNAN;
5065 dst->vf.when = 0;
5066 dst->vf.never = 1;
5067 } else {
5068 dst->vf.val = data[step * src->ds_cnt];
5069 dst->vf.when = src->start + (step + 1) * src->step;
5070 dst->vf.never = 0;
5071 }
5072 while (step != steps) {
5073 if (finite(data[step * src->ds_cnt])) {
5074 if (data[step * src->ds_cnt] > dst->vf.val) {
5075 dst->vf.val = data[step * src->ds_cnt];
5076 dst->vf.when = src->start + (step + 1) * src->step;
5077 dst->vf.never = 0;
5078 }
5079 }
5080 step++;
5081 }
5082 break;
5083 case VDEF_TOTAL:
5084 case VDEF_STDEV:
5085 case VDEF_AVERAGE:{
5086 int cnt = 0;
5087 double sum = 0.0;
5088 double average = 0.0;
5090 for (step = 0; step < steps; step++) {
5091 if (finite(data[step * src->ds_cnt])) {
5092 sum += data[step * src->ds_cnt];
5093 cnt++;
5094 };
5095 }
5096 if (cnt) {
5097 if (dst->vf.op == VDEF_TOTAL) {
5098 dst->vf.val = sum * src->step;
5099 dst->vf.when = 0; /* no time component */
5100 dst->vf.never = 1;
5101 } else if (dst->vf.op == VDEF_AVERAGE) {
5102 dst->vf.val = sum / cnt;
5103 dst->vf.when = 0; /* no time component */
5104 dst->vf.never = 1;
5105 } else {
5106 average = sum / cnt;
5107 sum = 0.0;
5108 for (step = 0; step < steps; step++) {
5109 if (finite(data[step * src->ds_cnt])) {
5110 sum += pow((data[step * src->ds_cnt] - average), 2.0);
5111 };
5112 }
5113 dst->vf.val = pow(sum / cnt, 0.5);
5114 dst->vf.when = 0; /* no time component */
5115 dst->vf.never = 1;
5116 };
5117 } else {
5118 dst->vf.val = DNAN;
5119 dst->vf.when = 0;
5120 dst->vf.never = 1;
5121 }
5122 }
5123 break;
5124 case VDEF_MINIMUM:
5125 step = 0;
5126 while (step != steps && isnan(data[step * src->ds_cnt]))
5127 step++;
5128 if (step == steps) {
5129 dst->vf.val = DNAN;
5130 dst->vf.when = 0;
5131 dst->vf.never = 1;
5132 } else {
5133 dst->vf.val = data[step * src->ds_cnt];
5134 dst->vf.when = src->start + (step + 1) * src->step;
5135 dst->vf.never = 0;
5136 }
5137 while (step != steps) {
5138 if (finite(data[step * src->ds_cnt])) {
5139 if (data[step * src->ds_cnt] < dst->vf.val) {
5140 dst->vf.val = data[step * src->ds_cnt];
5141 dst->vf.when = src->start + (step + 1) * src->step;
5142 dst->vf.never = 0;
5143 }
5144 }
5145 step++;
5146 }
5147 break;
5148 case VDEF_FIRST:
5149 /* The time value returned here is one step before the
5150 * actual time value. This is the start of the first
5151 * non-NaN interval.
5152 */
5153 step = 0;
5154 while (step != steps && isnan(data[step * src->ds_cnt]))
5155 step++;
5156 if (step == steps) { /* all entries were NaN */
5157 dst->vf.val = DNAN;
5158 dst->vf.when = 0;
5159 dst->vf.never = 1;
5160 } else {
5161 dst->vf.val = data[step * src->ds_cnt];
5162 dst->vf.when = src->start + step * src->step;
5163 dst->vf.never = 0;
5164 }
5165 break;
5166 case VDEF_LAST:
5167 /* The time value returned here is the
5168 * actual time value. This is the end of the last
5169 * non-NaN interval.
5170 */
5171 step = steps - 1;
5172 while (step >= 0 && isnan(data[step * src->ds_cnt]))
5173 step--;
5174 if (step < 0) { /* all entries were NaN */
5175 dst->vf.val = DNAN;
5176 dst->vf.when = 0;
5177 dst->vf.never = 1;
5178 } else {
5179 dst->vf.val = data[step * src->ds_cnt];
5180 dst->vf.when = src->start + (step + 1) * src->step;
5181 dst->vf.never = 0;
5182 }
5183 break;
5184 case VDEF_LSLSLOPE:
5185 case VDEF_LSLINT:
5186 case VDEF_LSLCORREL:{
5187 /* Bestfit line by linear least squares method */
5189 int cnt = 0;
5190 double SUMx, SUMy, SUMxy, SUMxx, SUMyy, slope, y_intercept, correl;
5192 SUMx = 0;
5193 SUMy = 0;
5194 SUMxy = 0;
5195 SUMxx = 0;
5196 SUMyy = 0;
5197 for (step = 0; step < steps; step++) {
5198 if (finite(data[step * src->ds_cnt])) {
5199 cnt++;
5200 SUMx += step;
5201 SUMxx += step * step;
5202 SUMxy += step * data[step * src->ds_cnt];
5203 SUMy += data[step * src->ds_cnt];
5204 SUMyy += data[step * src->ds_cnt] * data[step * src->ds_cnt];
5205 };
5206 }
5208 slope = (SUMx * SUMy - cnt * SUMxy) / (SUMx * SUMx - cnt * SUMxx);
5209 y_intercept = (SUMy - slope * SUMx) / cnt;
5210 correl =
5211 (SUMxy -
5212 (SUMx * SUMy) / cnt) /
5213 sqrt((SUMxx -
5214 (SUMx * SUMx) / cnt) * (SUMyy - (SUMy * SUMy) / cnt));
5215 if (cnt) {
5216 if (dst->vf.op == VDEF_LSLSLOPE) {
5217 dst->vf.val = slope;
5218 dst->vf.when = 0;
5219 dst->vf.never = 1;
5220 } else if (dst->vf.op == VDEF_LSLINT) {
5221 dst->vf.val = y_intercept;
5222 dst->vf.when = 0;
5223 dst->vf.never = 1;
5224 } else if (dst->vf.op == VDEF_LSLCORREL) {
5225 dst->vf.val = correl;
5226 dst->vf.when = 0;
5227 dst->vf.never = 1;
5228 };
5229 } else {
5230 dst->vf.val = DNAN;
5231 dst->vf.when = 0;
5232 dst->vf.never = 1;
5233 }
5234 }
5235 break;
5236 }
5237 return 0;
5238 }
5240 /* NaN < -INF < finite_values < INF */
5241 int vdef_percent_compar(
5242 const void
5243 *a,
5244 const void
5245 *b)
5246 {
5247 /* Equality is not returned; this doesn't hurt except
5248 * (maybe) for a little performance.
5249 */
5251 /* First catch NaN values. They are smallest */
5252 if (isnan(*(double *) a))
5253 return -1;
5254 if (isnan(*(double *) b))
5255 return 1;
5256 /* NaN doesn't reach this part so INF and -INF are extremes.
5257 * The sign from isinf() is compatible with the sign we return
5258 */
5259 if (isinf(*(double *) a))
5260 return isinf(*(double *) a);
5261 if (isinf(*(double *) b))
5262 return isinf(*(double *) b);
5263 /* If we reach this, both values must be finite */
5264 if (*(double *) a < *(double *) b)
5265 return -1;
5266 else
5267 return 1;
5268 }
5270 void grinfo_push(
5271 image_desc_t *im,
5272 char *key,
5273 rrd_info_type_t type,
5274 rrd_infoval_t value)
5275 {
5276 im->grinfo_current = rrd_info_push(im->grinfo_current, key, type, value);
5277 if (im->grinfo == NULL) {
5278 im->grinfo = im->grinfo_current;
5279 }
5280 }
5283 void time_clean(
5284 char *result,
5285 char *format)
5286 {
5287 int j, jj;
5289 /* Handling based on
5290 - ANSI C99 Specifications http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf
5291 - Single UNIX Specification version 2 http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html
5292 - POSIX:2001/Single UNIX Specification version 3 http://www.opengroup.org/onlinepubs/009695399/functions/strftime.html
5293 - POSIX:2008 Specifications http://www.opengroup.org/onlinepubs/9699919799/functions/strftime.html
5294 Specifications tells
5295 "If a conversion specifier is not one of the above, the behavior is undefined."
5297 C99 tells
5298 "A conversion specifier consists of a % character, possibly followed by an E or O modifier character (described below), followed by a character that determines the behavior of the conversion specifier.
5300 POSIX:2001 tells
5301 "A conversion specification consists of a '%' character, possibly followed by an E or O modifier, and a terminating conversion specifier character that determines the conversion specification's behavior."
5303 POSIX:2008 introduce more complexe behavior that are not handled here.
5305 According to this, this code will replace:
5306 - % followed by @ by a %@
5307 - % followed by by a %SPACE
5308 - % followed by . by a %.
5309 - % followed by % by a %
5310 - % followed by t by a TAB
5311 - % followed by E then anything by '-'
5312 - % followed by O then anything by '-'
5313 - % followed by anything else by at least one '-'. More characters may be added to better fit expected output length
5314 */
5316 jj = 0;
5317 for(j = 0; (j < FMT_LEG_LEN - 1) && (jj < FMT_LEG_LEN); j++) { /* we don't need to parse the last char */
5318 if (format[j] == '%') {
5319 if ((format[j+1] == 'E') || (format[j+1] == 'O')) {
5320 result[jj++] = '-';
5321 j+=2; /* We skip next 2 following char */
5322 } else if ((format[j+1] == 'C') || (format[j+1] == 'd') ||
5323 (format[j+1] == 'g') || (format[j+1] == 'H') ||
5324 (format[j+1] == 'I') || (format[j+1] == 'm') ||
5325 (format[j+1] == 'M') || (format[j+1] == 'S') ||
5326 (format[j+1] == 'U') || (format[j+1] == 'V') ||
5327 (format[j+1] == 'W') || (format[j+1] == 'y')) {
5328 result[jj++] = '-';
5329 if (jj < FMT_LEG_LEN) {
5330 result[jj++] = '-';
5331 }
5332 j++; /* We skip the following char */
5333 } else if (format[j+1] == 'j') {
5334 result[jj++] = '-';
5335 if (jj < FMT_LEG_LEN - 1) {
5336 result[jj++] = '-';
5337 result[jj++] = '-';
5338 }
5339 j++; /* We skip the following char */
5340 } else if ((format[j+1] == 'G') || (format[j+1] == 'Y')) {
5341 /* Assuming Year on 4 digit */
5342 result[jj++] = '-';
5343 if (jj < FMT_LEG_LEN - 2) {
5344 result[jj++] = '-';
5345 result[jj++] = '-';
5346 result[jj++] = '-';
5347 }
5348 j++; /* We skip the following char */
5349 } else if (format[j+1] == 'R') {
5350 result[jj++] = '-';
5351 if (jj < FMT_LEG_LEN - 3) {
5352 result[jj++] = '-';
5353 result[jj++] = ':';
5354 result[jj++] = '-';
5355 result[jj++] = '-';
5356 }
5357 j++; /* We skip the following char */
5358 } else if (format[j+1] == 'T') {
5359 result[jj++] = '-';
5360 if (jj < FMT_LEG_LEN - 6) {
5361 result[jj++] = '-';
5362 result[jj++] = ':';
5363 result[jj++] = '-';
5364 result[jj++] = '-';
5365 result[jj++] = ':';
5366 result[jj++] = '-';
5367 result[jj++] = '-';
5368 }
5369 j++; /* We skip the following char */
5370 } else if (format[j+1] == 'F') {
5371 result[jj++] = '-';
5372 if (jj < FMT_LEG_LEN - 8) {
5373 result[jj++] = '-';
5374 result[jj++] = '-';
5375 result[jj++] = '-';
5376 result[jj++] = '-';
5377 result[jj++] = '-';
5378 result[jj++] = '-';
5379 result[jj++] = '-';
5380 result[jj++] = '-';
5381 result[jj++] = '-';
5382 }
5383 j++; /* We skip the following char */
5384 } else if (format[j+1] == 'D') {
5385 result[jj++] = '-';
5386 if (jj < FMT_LEG_LEN - 6) {
5387 result[jj++] = '-';
5388 result[jj++] = '/';
5389 result[jj++] = '-';
5390 result[jj++] = '-';
5391 result[jj++] = '/';
5392 result[jj++] = '-';
5393 result[jj++] = '-';
5394 }
5395 j++; /* We skip the following char */
5396 } else if (format[j+1] == 'n') {
5397 result[jj++] = '\r';
5398 result[jj++] = '\n';
5399 j++; /* We skip the following char */
5400 } else if (format[j+1] == 't') {
5401 result[jj++] = '\t';
5402 j++; /* We skip the following char */
5403 } else if (format[j+1] == '%') {
5404 result[jj++] = '%';
5405 j++; /* We skip the following char */
5406 } else if (format[j+1] == ' ') {
5407 if (jj < FMT_LEG_LEN - 1) {
5408 result[jj++] = '%';
5409 result[jj++] = ' ';
5410 }
5411 j++; /* We skip the following char */
5412 } else if (format[j+1] == '.') {
5413 if (jj < FMT_LEG_LEN - 1) {
5414 result[jj++] = '%';
5415 result[jj++] = '.';
5416 }
5417 j++; /* We skip the following char */
5418 } else if (format[j+1] == '@') {
5419 if (jj < FMT_LEG_LEN - 1) {
5420 result[jj++] = '%';
5421 result[jj++] = '@';
5422 }
5423 j++; /* We skip the following char */
5424 } else {
5425 result[jj++] = '-';
5426 j++; /* We skip the following char */
5427 }
5428 } else {
5429 result[jj++] = format[j];
5430 }
5431 }
5432 result[jj] = '\0'; /* We must force the end of the string */
5433 }