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, week_fmt}
95 ,
96 {6 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 1, TMT_MONTH, 1, 30 * 24 * 3600,
97 "%b"}
98 ,
99 {48 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 3, TMT_MONTH, 3, 30 * 24 * 3600,
100 "%b"}
101 ,
102 {315360, 0, TMT_MONTH, 3, TMT_YEAR, 1, TMT_YEAR, 1, 365 * 24 * 3600, "%Y"}
103 ,
104 {10 * 24 * 3600, 0, TMT_YEAR, 1, TMT_YEAR, 1, TMT_YEAR, 1,
105 365 * 24 * 3600, "%y"}
106 ,
107 {-1, 0, TMT_MONTH, 0, TMT_MONTH, 0, TMT_MONTH, 0, 0, ""}
108 };
110 /* sensible y label intervals ...*/
112 ylab_t ylab[] = {
113 {0.1, {1, 2, 5, 10}
114 }
115 ,
116 {0.2, {1, 5, 10, 20}
117 }
118 ,
119 {0.5, {1, 2, 4, 10}
120 }
121 ,
122 {1.0, {1, 2, 5, 10}
123 }
124 ,
125 {2.0, {1, 5, 10, 20}
126 }
127 ,
128 {5.0, {1, 2, 4, 10}
129 }
130 ,
131 {10.0, {1, 2, 5, 10}
132 }
133 ,
134 {20.0, {1, 5, 10, 20}
135 }
136 ,
137 {50.0, {1, 2, 4, 10}
138 }
139 ,
140 {100.0, {1, 2, 5, 10}
141 }
142 ,
143 {200.0, {1, 5, 10, 20}
144 }
145 ,
146 {500.0, {1, 2, 4, 10}
147 }
148 ,
149 {0.0, {0, 0, 0, 0}
150 }
151 };
154 gfx_color_t graph_col[] = /* default colors */
155 {
156 {1.00, 1.00, 1.00, 1.00}, /* canvas */
157 {0.95, 0.95, 0.95, 1.00}, /* background */
158 {0.81, 0.81, 0.81, 1.00}, /* shade A */
159 {0.62, 0.62, 0.62, 1.00}, /* shade B */
160 {0.56, 0.56, 0.56, 0.75}, /* grid */
161 {0.87, 0.31, 0.31, 0.60}, /* major grid */
162 {0.00, 0.00, 0.00, 1.00}, /* font */
163 {0.50, 0.12, 0.12, 1.00}, /* arrow */
164 {0.12, 0.12, 0.12, 1.00}, /* axis */
165 {0.00, 0.00, 0.00, 1.00} /* frame */
166 };
169 /* #define DEBUG */
171 #ifdef DEBUG
172 # define DPRINT(x) (void)(printf x, printf("\n"))
173 #else
174 # define DPRINT(x)
175 #endif
178 /* initialize with xtr(im,0); */
179 int xtr(
180 image_desc_t *im,
181 time_t mytime)
182 {
183 static double pixie;
185 if (mytime == 0) {
186 pixie = (double) im->xsize / (double) (im->end - im->start);
187 return im->xorigin;
188 }
189 return (int) ((double) im->xorigin + pixie * (mytime - im->start));
190 }
192 /* translate data values into y coordinates */
193 double ytr(
194 image_desc_t *im,
195 double value)
196 {
197 static double pixie;
198 double yval;
200 if (isnan(value)) {
201 if (!im->logarithmic)
202 pixie = (double) im->ysize / (im->maxval - im->minval);
203 else
204 pixie =
205 (double) im->ysize / (log10(im->maxval) - log10(im->minval));
206 yval = im->yorigin;
207 } else if (!im->logarithmic) {
208 yval = im->yorigin - pixie * (value - im->minval);
209 } else {
210 if (value < im->minval) {
211 yval = im->yorigin;
212 } else {
213 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
214 }
215 }
216 return yval;
217 }
221 /* conversion function for symbolic entry names */
224 #define conv_if(VV,VVV) \
225 if (strcmp(#VV, string) == 0) return VVV ;
227 enum gf_en gf_conv(
228 char *string)
229 {
231 conv_if(PRINT, GF_PRINT);
232 conv_if(GPRINT, GF_GPRINT);
233 conv_if(COMMENT, GF_COMMENT);
234 conv_if(HRULE, GF_HRULE);
235 conv_if(VRULE, GF_VRULE);
236 conv_if(LINE, GF_LINE);
237 conv_if(AREA, GF_AREA);
238 conv_if(GRAD, GF_GRAD);
239 conv_if(STACK, GF_STACK);
240 conv_if(TICK, GF_TICK);
241 conv_if(TEXTALIGN, GF_TEXTALIGN);
242 conv_if(DEF, GF_DEF);
243 conv_if(CDEF, GF_CDEF);
244 conv_if(VDEF, GF_VDEF);
245 conv_if(XPORT, GF_XPORT);
246 conv_if(SHIFT, GF_SHIFT);
248 return (enum gf_en)(-1);
249 }
251 enum gfx_if_en if_conv(
252 char *string)
253 {
255 conv_if(PNG, IF_PNG);
256 conv_if(SVG, IF_SVG);
257 conv_if(EPS, IF_EPS);
258 conv_if(PDF, IF_PDF);
260 return (enum gfx_if_en)(-1);
261 }
263 enum tmt_en tmt_conv(
264 char *string)
265 {
267 conv_if(SECOND, TMT_SECOND);
268 conv_if(MINUTE, TMT_MINUTE);
269 conv_if(HOUR, TMT_HOUR);
270 conv_if(DAY, TMT_DAY);
271 conv_if(WEEK, TMT_WEEK);
272 conv_if(MONTH, TMT_MONTH);
273 conv_if(YEAR, TMT_YEAR);
274 return (enum tmt_en)(-1);
275 }
277 enum grc_en grc_conv(
278 char *string)
279 {
281 conv_if(BACK, GRC_BACK);
282 conv_if(CANVAS, GRC_CANVAS);
283 conv_if(SHADEA, GRC_SHADEA);
284 conv_if(SHADEB, GRC_SHADEB);
285 conv_if(GRID, GRC_GRID);
286 conv_if(MGRID, GRC_MGRID);
287 conv_if(FONT, GRC_FONT);
288 conv_if(ARROW, GRC_ARROW);
289 conv_if(AXIS, GRC_AXIS);
290 conv_if(FRAME, GRC_FRAME);
292 return (enum grc_en)(-1);
293 }
295 enum text_prop_en text_prop_conv(
296 char *string)
297 {
299 conv_if(DEFAULT, TEXT_PROP_DEFAULT);
300 conv_if(TITLE, TEXT_PROP_TITLE);
301 conv_if(AXIS, TEXT_PROP_AXIS);
302 conv_if(UNIT, TEXT_PROP_UNIT);
303 conv_if(LEGEND, TEXT_PROP_LEGEND);
304 conv_if(WATERMARK, TEXT_PROP_WATERMARK);
305 return (enum text_prop_en)(-1);
306 }
309 #undef conv_if
311 int im_free(
312 image_desc_t *im)
313 {
314 unsigned long i, ii;
315 cairo_status_t status = (cairo_status_t) 0;
317 if (im == NULL)
318 return 0;
320 if (im->daemon_addr != NULL)
321 free(im->daemon_addr);
323 for (i = 0; i < (unsigned) im->gdes_c; i++) {
324 if (im->gdes[i].data_first) {
325 /* careful here, because a single pointer can occur several times */
326 free(im->gdes[i].data);
327 if (im->gdes[i].ds_namv) {
328 for (ii = 0; ii < im->gdes[i].ds_cnt; ii++)
329 free(im->gdes[i].ds_namv[ii]);
330 free(im->gdes[i].ds_namv);
331 }
332 }
333 /* free allocated memory used for dashed lines */
334 if (im->gdes[i].p_dashes != NULL)
335 free(im->gdes[i].p_dashes);
337 free(im->gdes[i].p_data);
338 free(im->gdes[i].rpnp);
339 }
340 free(im->gdes);
342 for (i = 0; i < DIM(text_prop);i++){
343 pango_font_description_free(im->text_prop[i].font_desc);
344 im->text_prop[i].font_desc = NULL;
345 }
347 if (im->font_options)
348 cairo_font_options_destroy(im->font_options);
350 if (im->cr) {
351 status = cairo_status(im->cr);
352 cairo_destroy(im->cr);
353 }
356 if (im->rendered_image) {
357 free(im->rendered_image);
358 }
360 if (im->layout) {
361 g_object_unref (im->layout);
362 }
364 if (im->surface)
365 cairo_surface_destroy(im->surface);
367 if (status)
368 fprintf(stderr, "OOPS: Cairo has issues it can't even die: %s\n",
369 cairo_status_to_string(status));
371 return 0;
372 }
374 /* find SI magnitude symbol for the given number*/
375 void auto_scale(
376 image_desc_t *im, /* image description */
377 double *value,
378 char **symb_ptr,
379 double *magfact)
380 {
382 char *symbol[] = { "a", /* 10e-18 Atto */
383 "f", /* 10e-15 Femto */
384 "p", /* 10e-12 Pico */
385 "n", /* 10e-9 Nano */
386 "u", /* 10e-6 Micro */
387 "m", /* 10e-3 Milli */
388 " ", /* Base */
389 "k", /* 10e3 Kilo */
390 "M", /* 10e6 Mega */
391 "G", /* 10e9 Giga */
392 "T", /* 10e12 Tera */
393 "P", /* 10e15 Peta */
394 "E"
395 }; /* 10e18 Exa */
397 int symbcenter = 6;
398 int sindex;
400 if (*value == 0.0 || isnan(*value)) {
401 sindex = 0;
402 *magfact = 1.0;
403 } else {
404 sindex = floor(log(fabs(*value)) / log((double) im->base));
405 *magfact = pow((double) im->base, (double) sindex);
406 (*value) /= (*magfact);
407 }
408 if (sindex <= symbcenter && sindex >= -symbcenter) {
409 (*symb_ptr) = symbol[sindex + symbcenter];
410 } else {
411 (*symb_ptr) = "?";
412 }
413 }
416 static char si_symbol[] = {
417 'a', /* 10e-18 Atto */
418 'f', /* 10e-15 Femto */
419 'p', /* 10e-12 Pico */
420 'n', /* 10e-9 Nano */
421 'u', /* 10e-6 Micro */
422 'm', /* 10e-3 Milli */
423 ' ', /* Base */
424 'k', /* 10e3 Kilo */
425 'M', /* 10e6 Mega */
426 'G', /* 10e9 Giga */
427 'T', /* 10e12 Tera */
428 'P', /* 10e15 Peta */
429 'E', /* 10e18 Exa */
430 };
431 static const int si_symbcenter = 6;
433 /* find SI magnitude symbol for the numbers on the y-axis*/
434 void si_unit(
435 image_desc_t *im /* image description */
436 )
437 {
439 double digits, viewdigits = 0;
441 digits =
442 floor(log(max(fabs(im->minval), fabs(im->maxval))) /
443 log((double) im->base));
445 if (im->unitsexponent != 9999) {
446 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
447 viewdigits = floor((double)(im->unitsexponent / 3));
448 } else {
449 viewdigits = digits;
450 }
452 im->magfact = pow((double) im->base, digits);
454 #ifdef DEBUG
455 printf("digits %6.3f im->magfact %6.3f\n", digits, im->magfact);
456 #endif
458 im->viewfactor = im->magfact / pow((double) im->base, viewdigits);
460 if (((viewdigits + si_symbcenter) < sizeof(si_symbol)) &&
461 ((viewdigits + si_symbcenter) >= 0))
462 im->symbol = si_symbol[(int) viewdigits + si_symbcenter];
463 else
464 im->symbol = '?';
465 }
467 /* move min and max values around to become sensible */
469 void expand_range(
470 image_desc_t *im)
471 {
472 double sensiblevalues[] = { 1000.0, 900.0, 800.0, 750.0, 700.0,
473 600.0, 500.0, 400.0, 300.0, 250.0,
474 200.0, 125.0, 100.0, 90.0, 80.0,
475 75.0, 70.0, 60.0, 50.0, 40.0, 30.0,
476 25.0, 20.0, 10.0, 9.0, 8.0,
477 7.0, 6.0, 5.0, 4.0, 3.5, 3.0,
478 2.5, 2.0, 1.8, 1.5, 1.2, 1.0,
479 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.0, -1
480 };
482 double scaled_min, scaled_max;
483 double adj;
484 int i;
488 #ifdef DEBUG
489 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
490 im->minval, im->maxval, im->magfact);
491 #endif
493 if (isnan(im->ygridstep)) {
494 if (im->extra_flags & ALTAUTOSCALE) {
495 /* measure the amplitude of the function. Make sure that
496 graph boundaries are slightly higher then max/min vals
497 so we can see amplitude on the graph */
498 double delt, fact;
500 delt = im->maxval - im->minval;
501 adj = delt * 0.1;
502 fact = 2.0 * pow(10.0,
503 floor(log10
504 (max(fabs(im->minval), fabs(im->maxval)) /
505 im->magfact)) - 2);
506 if (delt < fact) {
507 adj = (fact - delt) * 0.55;
508 #ifdef DEBUG
509 printf
510 ("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n",
511 im->minval, im->maxval, delt, fact, adj);
512 #endif
513 }
514 im->minval -= adj;
515 im->maxval += adj;
516 } else if (im->extra_flags & ALTAUTOSCALE_MIN) {
517 /* measure the amplitude of the function. Make sure that
518 graph boundaries are slightly lower than min vals
519 so we can see amplitude on the graph */
520 adj = (im->maxval - im->minval) * 0.1;
521 im->minval -= adj;
522 } else if (im->extra_flags & ALTAUTOSCALE_MAX) {
523 /* measure the amplitude of the function. Make sure that
524 graph boundaries are slightly higher than max vals
525 so we can see amplitude on the graph */
526 adj = (im->maxval - im->minval) * 0.1;
527 im->maxval += adj;
528 } else {
529 scaled_min = im->minval / im->magfact;
530 scaled_max = im->maxval / im->magfact;
532 for (i = 1; sensiblevalues[i] > 0; i++) {
533 if (sensiblevalues[i - 1] >= scaled_min &&
534 sensiblevalues[i] <= scaled_min)
535 im->minval = sensiblevalues[i] * (im->magfact);
537 if (-sensiblevalues[i - 1] <= scaled_min &&
538 -sensiblevalues[i] >= scaled_min)
539 im->minval = -sensiblevalues[i - 1] * (im->magfact);
541 if (sensiblevalues[i - 1] >= scaled_max &&
542 sensiblevalues[i] <= scaled_max)
543 im->maxval = sensiblevalues[i - 1] * (im->magfact);
545 if (-sensiblevalues[i - 1] <= scaled_max &&
546 -sensiblevalues[i] >= scaled_max)
547 im->maxval = -sensiblevalues[i] * (im->magfact);
548 }
549 }
550 } else {
551 /* adjust min and max to the grid definition if there is one */
552 im->minval = (double) im->ylabfact * im->ygridstep *
553 floor(im->minval / ((double) im->ylabfact * im->ygridstep));
554 im->maxval = (double) im->ylabfact * im->ygridstep *
555 ceil(im->maxval / ((double) im->ylabfact * im->ygridstep));
556 }
558 #ifdef DEBUG
559 fprintf(stderr, "SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
560 im->minval, im->maxval, im->magfact);
561 #endif
562 }
565 void apply_gridfit(
566 image_desc_t *im)
567 {
568 if (isnan(im->minval) || isnan(im->maxval))
569 return;
570 ytr(im, DNAN);
571 if (im->logarithmic) {
572 double ya, yb, ypix, ypixfrac;
573 double log10_range = log10(im->maxval) - log10(im->minval);
575 ya = pow((double) 10, floor(log10(im->minval)));
576 while (ya < im->minval)
577 ya *= 10;
578 if (ya > im->maxval)
579 return; /* don't have y=10^x gridline */
580 yb = ya * 10;
581 if (yb <= im->maxval) {
582 /* we have at least 2 y=10^x gridlines.
583 Make sure distance between them in pixels
584 are an integer by expanding im->maxval */
585 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
586 double factor = y_pixel_delta / floor(y_pixel_delta);
587 double new_log10_range = factor * log10_range;
588 double new_ymax_log10 = log10(im->minval) + new_log10_range;
590 im->maxval = pow(10, new_ymax_log10);
591 ytr(im, DNAN); /* reset precalc */
592 log10_range = log10(im->maxval) - log10(im->minval);
593 }
594 /* make sure first y=10^x gridline is located on
595 integer pixel position by moving scale slightly
596 downwards (sub-pixel movement) */
597 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
598 ypixfrac = ypix - floor(ypix);
599 if (ypixfrac > 0 && ypixfrac < 1) {
600 double yfrac = ypixfrac / im->ysize;
602 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
603 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
604 ytr(im, DNAN); /* reset precalc */
605 }
606 } else {
607 /* Make sure we have an integer pixel distance between
608 each minor gridline */
609 double ypos1 = ytr(im, im->minval);
610 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
611 double y_pixel_delta = ypos1 - ypos2;
612 double factor = y_pixel_delta / floor(y_pixel_delta);
613 double new_range = factor * (im->maxval - im->minval);
614 double gridstep = im->ygrid_scale.gridstep;
615 double minor_y, minor_y_px, minor_y_px_frac;
617 if (im->maxval > 0.0)
618 im->maxval = im->minval + new_range;
619 else
620 im->minval = im->maxval - new_range;
621 ytr(im, DNAN); /* reset precalc */
622 /* make sure first minor gridline is on integer pixel y coord */
623 minor_y = gridstep * floor(im->minval / gridstep);
624 while (minor_y < im->minval)
625 minor_y += gridstep;
626 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
627 minor_y_px_frac = minor_y_px - floor(minor_y_px);
628 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
629 double yfrac = minor_y_px_frac / im->ysize;
630 double range = im->maxval - im->minval;
632 im->minval = im->minval - yfrac * range;
633 im->maxval = im->maxval - yfrac * range;
634 ytr(im, DNAN); /* reset precalc */
635 }
636 calc_horizontal_grid(im); /* recalc with changed im->maxval */
637 }
638 }
640 /* reduce data reimplementation by Alex */
642 void reduce_data(
643 enum cf_en cf, /* which consolidation function ? */
644 unsigned long cur_step, /* step the data currently is in */
645 time_t *start, /* start, end and step as requested ... */
646 time_t *end, /* ... by the application will be ... */
647 unsigned long *step, /* ... adjusted to represent reality */
648 unsigned long *ds_cnt, /* number of data sources in file */
649 rrd_value_t **data)
650 { /* two dimensional array containing the data */
651 int i, reduce_factor = ceil((double) (*step) / (double) cur_step);
652 unsigned long col, dst_row, row_cnt, start_offset, end_offset, skiprows =
653 0;
654 rrd_value_t *srcptr, *dstptr;
656 (*step) = cur_step * reduce_factor; /* set new step size for reduced data */
657 dstptr = *data;
658 srcptr = *data;
659 row_cnt = ((*end) - (*start)) / cur_step;
661 #ifdef DEBUG
662 #define DEBUG_REDUCE
663 #endif
664 #ifdef DEBUG_REDUCE
665 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
666 row_cnt, reduce_factor, *start, *end, cur_step);
667 for (col = 0; col < row_cnt; col++) {
668 printf("time %10lu: ", *start + (col + 1) * cur_step);
669 for (i = 0; i < *ds_cnt; i++)
670 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
671 printf("\n");
672 }
673 #endif
675 /* We have to combine [reduce_factor] rows of the source
676 ** into one row for the destination. Doing this we also
677 ** need to take care to combine the correct rows. First
678 ** alter the start and end time so that they are multiples
679 ** of the new step time. We cannot reduce the amount of
680 ** time so we have to move the end towards the future and
681 ** the start towards the past.
682 */
683 end_offset = (*end) % (*step);
684 start_offset = (*start) % (*step);
686 /* If there is a start offset (which cannot be more than
687 ** one destination row), skip the appropriate number of
688 ** source rows and one destination row. The appropriate
689 ** number is what we do know (start_offset/cur_step) of
690 ** the new interval (*step/cur_step aka reduce_factor).
691 */
692 #ifdef DEBUG_REDUCE
693 printf("start_offset: %lu end_offset: %lu\n", start_offset, end_offset);
694 printf("row_cnt before: %lu\n", row_cnt);
695 #endif
696 if (start_offset) {
697 (*start) = (*start) - start_offset;
698 skiprows = reduce_factor - start_offset / cur_step;
699 srcptr += skiprows * *ds_cnt;
700 for (col = 0; col < (*ds_cnt); col++)
701 *dstptr++ = DNAN;
702 row_cnt -= skiprows;
703 }
704 #ifdef DEBUG_REDUCE
705 printf("row_cnt between: %lu\n", row_cnt);
706 #endif
708 /* At the end we have some rows that are not going to be
709 ** used, the amount is end_offset/cur_step
710 */
711 if (end_offset) {
712 (*end) = (*end) - end_offset + (*step);
713 skiprows = end_offset / cur_step;
714 row_cnt -= skiprows;
715 }
716 #ifdef DEBUG_REDUCE
717 printf("row_cnt after: %lu\n", row_cnt);
718 #endif
720 /* Sanity check: row_cnt should be multiple of reduce_factor */
721 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
723 if (row_cnt % reduce_factor) {
724 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
725 row_cnt, reduce_factor);
726 printf("BUG in reduce_data()\n");
727 exit(1);
728 }
730 /* Now combine reduce_factor intervals at a time
731 ** into one interval for the destination.
732 */
734 for (dst_row = 0; (long int) row_cnt >= reduce_factor; dst_row++) {
735 for (col = 0; col < (*ds_cnt); col++) {
736 rrd_value_t newval = DNAN;
737 unsigned long validval = 0;
739 for (i = 0; i < reduce_factor; i++) {
740 if (isnan(srcptr[i * (*ds_cnt) + col])) {
741 continue;
742 }
743 validval++;
744 if (isnan(newval))
745 newval = srcptr[i * (*ds_cnt) + col];
746 else {
747 switch (cf) {
748 case CF_HWPREDICT:
749 case CF_MHWPREDICT:
750 case CF_DEVSEASONAL:
751 case CF_DEVPREDICT:
752 case CF_SEASONAL:
753 case CF_AVERAGE:
754 newval += srcptr[i * (*ds_cnt) + col];
755 break;
756 case CF_MINIMUM:
757 newval = min(newval, srcptr[i * (*ds_cnt) + col]);
758 break;
759 case CF_FAILURES:
760 /* an interval contains a failure if any subintervals contained a failure */
761 case CF_MAXIMUM:
762 newval = max(newval, srcptr[i * (*ds_cnt) + col]);
763 break;
764 case CF_LAST:
765 newval = srcptr[i * (*ds_cnt) + col];
766 break;
767 }
768 }
769 }
770 if (validval == 0) {
771 newval = DNAN;
772 } else {
773 switch (cf) {
774 case CF_HWPREDICT:
775 case CF_MHWPREDICT:
776 case CF_DEVSEASONAL:
777 case CF_DEVPREDICT:
778 case CF_SEASONAL:
779 case CF_AVERAGE:
780 newval /= validval;
781 break;
782 case CF_MINIMUM:
783 case CF_FAILURES:
784 case CF_MAXIMUM:
785 case CF_LAST:
786 break;
787 }
788 }
789 *dstptr++ = newval;
790 }
791 srcptr += (*ds_cnt) * reduce_factor;
792 row_cnt -= reduce_factor;
793 }
794 /* If we had to alter the endtime, we didn't have enough
795 ** source rows to fill the last row. Fill it with NaN.
796 */
797 if (end_offset)
798 for (col = 0; col < (*ds_cnt); col++)
799 *dstptr++ = DNAN;
800 #ifdef DEBUG_REDUCE
801 row_cnt = ((*end) - (*start)) / *step;
802 srcptr = *data;
803 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
804 row_cnt, *start, *end, *step);
805 for (col = 0; col < row_cnt; col++) {
806 printf("time %10lu: ", *start + (col + 1) * (*step));
807 for (i = 0; i < *ds_cnt; i++)
808 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
809 printf("\n");
810 }
811 #endif
812 }
815 /* get the data required for the graphs from the
816 relevant rrds ... */
818 int data_fetch(
819 image_desc_t *im)
820 {
821 int i, ii;
822 int skip;
824 /* pull the data from the rrd files ... */
825 for (i = 0; i < (int) im->gdes_c; i++) {
826 /* only GF_DEF elements fetch data */
827 if (im->gdes[i].gf != GF_DEF)
828 continue;
830 skip = 0;
831 /* do we have it already ? */
832 for (ii = 0; ii < i; ii++) {
833 if (im->gdes[ii].gf != GF_DEF)
834 continue;
835 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
836 && (im->gdes[i].cf == im->gdes[ii].cf)
837 && (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
838 && (im->gdes[i].start_orig == im->gdes[ii].start_orig)
839 && (im->gdes[i].end_orig == im->gdes[ii].end_orig)
840 && (im->gdes[i].step_orig == im->gdes[ii].step_orig)) {
841 /* OK, the data is already there.
842 ** Just copy the header portion
843 */
844 im->gdes[i].start = im->gdes[ii].start;
845 im->gdes[i].end = im->gdes[ii].end;
846 im->gdes[i].step = im->gdes[ii].step;
847 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
848 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
849 im->gdes[i].data = im->gdes[ii].data;
850 im->gdes[i].data_first = 0;
851 skip = 1;
852 }
853 if (skip)
854 break;
855 }
856 if (!skip) {
857 unsigned long ft_step = im->gdes[i].step; /* ft_step will record what we got from fetch */
858 const char *rrd_daemon;
859 int status;
861 if (im->gdes[i].daemon[0] != 0)
862 rrd_daemon = im->gdes[i].daemon;
863 else
864 rrd_daemon = im->daemon_addr;
866 /* "daemon" may be NULL. ENV_RRDCACHED_ADDRESS is evaluated in that
867 * case. If "daemon" holds the same value as in the previous
868 * iteration, no actual new connection is established - the
869 * existing connection is re-used. */
870 rrdc_connect (rrd_daemon);
872 /* If connecting was successfull, use the daemon to query the data.
873 * If there is no connection, for example because no daemon address
874 * was specified, (try to) use the local file directly. */
875 if (rrdc_is_connected (rrd_daemon))
876 {
877 status = rrdc_fetch (im->gdes[i].rrd,
878 cf_to_string (im->gdes[i].cf),
879 &im->gdes[i].start,
880 &im->gdes[i].end,
881 &ft_step,
882 &im->gdes[i].ds_cnt,
883 &im->gdes[i].ds_namv,
884 &im->gdes[i].data);
885 if (status != 0)
886 return (status);
887 }
888 else
889 {
890 if ((rrd_fetch_fn(im->gdes[i].rrd,
891 im->gdes[i].cf,
892 &im->gdes[i].start,
893 &im->gdes[i].end,
894 &ft_step,
895 &im->gdes[i].ds_cnt,
896 &im->gdes[i].ds_namv,
897 &im->gdes[i].data)) == -1) {
898 return -1;
899 }
900 }
901 im->gdes[i].data_first = 1;
903 /* must reduce to at least im->step
904 otherwhise we end up with more data than we can handle in the
905 chart and visibility of data will be random */
906 im->gdes[i].step = max(im->gdes[i].step,im->step);
907 if (ft_step < im->gdes[i].step) {
908 reduce_data(im->gdes[i].cf_reduce,
909 ft_step,
910 &im->gdes[i].start,
911 &im->gdes[i].end,
912 &im->gdes[i].step,
913 &im->gdes[i].ds_cnt, &im->gdes[i].data);
914 } else {
915 im->gdes[i].step = ft_step;
916 }
917 }
919 /* lets see if the required data source is really there */
920 for (ii = 0; ii < (int) im->gdes[i].ds_cnt; ii++) {
921 if (strcmp(im->gdes[i].ds_namv[ii], im->gdes[i].ds_nam) == 0) {
922 im->gdes[i].ds = ii;
923 }
924 }
925 if (im->gdes[i].ds == -1) {
926 rrd_set_error("No DS called '%s' in '%s'",
927 im->gdes[i].ds_nam, im->gdes[i].rrd);
928 return -1;
929 }
931 }
932 return 0;
933 }
935 /* evaluate the expressions in the CDEF functions */
937 /*************************************************************
938 * CDEF stuff
939 *************************************************************/
941 long find_var_wrapper(
942 void *arg1,
943 char *key)
944 {
945 return find_var((image_desc_t *) arg1, key);
946 }
948 /* find gdes containing var*/
949 long find_var(
950 image_desc_t *im,
951 char *key)
952 {
953 long ii;
955 for (ii = 0; ii < im->gdes_c - 1; ii++) {
956 if ((im->gdes[ii].gf == GF_DEF
957 || im->gdes[ii].gf == GF_VDEF || im->gdes[ii].gf == GF_CDEF)
958 && (strcmp(im->gdes[ii].vname, key) == 0)) {
959 return ii;
960 }
961 }
962 return -1;
963 }
965 /* find the greatest common divisor for all the numbers
966 in the 0 terminated num array */
967 long lcd(
968 long *num)
969 {
970 long rest;
971 int i;
973 for (i = 0; num[i + 1] != 0; i++) {
974 do {
975 rest = num[i] % num[i + 1];
976 num[i] = num[i + 1];
977 num[i + 1] = rest;
978 } while (rest != 0);
979 num[i + 1] = num[i];
980 }
981 /* return i==0?num[i]:num[i-1]; */
982 return num[i];
983 }
985 /* run the rpn calculator on all the VDEF and CDEF arguments */
986 int data_calc(
987 image_desc_t *im)
988 {
990 int gdi;
991 int dataidx;
992 long *steparray, rpi;
993 int stepcnt;
994 time_t now;
995 rpnstack_t rpnstack;
997 rpnstack_init(&rpnstack);
999 for (gdi = 0; gdi < im->gdes_c; gdi++) {
1000 /* Look for GF_VDEF and GF_CDEF in the same loop,
1001 * so CDEFs can use VDEFs and vice versa
1002 */
1003 switch (im->gdes[gdi].gf) {
1004 case GF_XPORT:
1005 break;
1006 case GF_SHIFT:{
1007 graph_desc_t *vdp = &im->gdes[im->gdes[gdi].vidx];
1009 /* remove current shift */
1010 vdp->start -= vdp->shift;
1011 vdp->end -= vdp->shift;
1013 /* vdef */
1014 if (im->gdes[gdi].shidx >= 0)
1015 vdp->shift = im->gdes[im->gdes[gdi].shidx].vf.val;
1016 /* constant */
1017 else
1018 vdp->shift = im->gdes[gdi].shval;
1020 /* normalize shift to multiple of consolidated step */
1021 vdp->shift = (vdp->shift / (long) vdp->step) * (long) vdp->step;
1023 /* apply shift */
1024 vdp->start += vdp->shift;
1025 vdp->end += vdp->shift;
1026 break;
1027 }
1028 case GF_VDEF:
1029 /* A VDEF has no DS. This also signals other parts
1030 * of rrdtool that this is a VDEF value, not a CDEF.
1031 */
1032 im->gdes[gdi].ds_cnt = 0;
1033 if (vdef_calc(im, gdi)) {
1034 rrd_set_error("Error processing VDEF '%s'",
1035 im->gdes[gdi].vname);
1036 rpnstack_free(&rpnstack);
1037 return -1;
1038 }
1039 break;
1040 case GF_CDEF:
1041 im->gdes[gdi].ds_cnt = 1;
1042 im->gdes[gdi].ds = 0;
1043 im->gdes[gdi].data_first = 1;
1044 im->gdes[gdi].start = 0;
1045 im->gdes[gdi].end = 0;
1046 steparray = NULL;
1047 stepcnt = 0;
1048 dataidx = -1;
1050 /* Find the variables in the expression.
1051 * - VDEF variables are substituted by their values
1052 * and the opcode is changed into OP_NUMBER.
1053 * - CDEF variables are analized for their step size,
1054 * the lowest common denominator of all the step
1055 * sizes of the data sources involved is calculated
1056 * and the resulting number is the step size for the
1057 * resulting data source.
1058 */
1059 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1060 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1061 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1062 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1064 if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
1065 #if 0
1066 printf
1067 ("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
1068 im->gdes[gdi].vname, im->gdes[ptr].vname);
1069 printf("DEBUG: value from vdef is %f\n",
1070 im->gdes[ptr].vf.val);
1071 #endif
1072 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
1073 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
1074 } else { /* normal variables and PREF(variables) */
1076 /* add one entry to the array that keeps track of the step sizes of the
1077 * data sources going into the CDEF. */
1078 if ((steparray =
1079 (long*)rrd_realloc(steparray,
1080 (++stepcnt +
1081 1) * sizeof(*steparray))) == NULL) {
1082 rrd_set_error("realloc steparray");
1083 rpnstack_free(&rpnstack);
1084 return -1;
1085 };
1087 steparray[stepcnt - 1] = im->gdes[ptr].step;
1089 /* adjust start and end of cdef (gdi) so
1090 * that it runs from the latest start point
1091 * to the earliest endpoint of any of the
1092 * rras involved (ptr)
1093 */
1095 if (im->gdes[gdi].start < im->gdes[ptr].start)
1096 im->gdes[gdi].start = im->gdes[ptr].start;
1098 if (im->gdes[gdi].end == 0 ||
1099 im->gdes[gdi].end > im->gdes[ptr].end)
1100 im->gdes[gdi].end = im->gdes[ptr].end;
1102 /* store pointer to the first element of
1103 * the rra providing data for variable,
1104 * further save step size and data source
1105 * count of this rra
1106 */
1107 im->gdes[gdi].rpnp[rpi].data =
1108 im->gdes[ptr].data + im->gdes[ptr].ds;
1109 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
1110 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
1112 /* backoff the *.data ptr; this is done so
1113 * rpncalc() function doesn't have to treat
1114 * the first case differently
1115 */
1116 } /* if ds_cnt != 0 */
1117 } /* if OP_VARIABLE */
1118 } /* loop through all rpi */
1120 /* move the data pointers to the correct period */
1121 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1122 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1123 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1124 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1125 long diff =
1126 im->gdes[gdi].start - im->gdes[ptr].start;
1128 if (diff > 0)
1129 im->gdes[gdi].rpnp[rpi].data +=
1130 (diff / im->gdes[ptr].step) *
1131 im->gdes[ptr].ds_cnt;
1132 }
1133 }
1135 if (steparray == NULL) {
1136 rrd_set_error("rpn expressions without DEF"
1137 " or CDEF variables are not supported");
1138 rpnstack_free(&rpnstack);
1139 return -1;
1140 }
1141 steparray[stepcnt] = 0;
1142 /* Now find the resulting step. All steps in all
1143 * used RRAs have to be visited
1144 */
1145 im->gdes[gdi].step = lcd(steparray);
1146 free(steparray);
1147 if ((im->gdes[gdi].data = (rrd_value_t*)malloc(((im->gdes[gdi].end -
1148 im->gdes[gdi].start)
1149 / im->gdes[gdi].step)
1150 * sizeof(double))) == NULL) {
1151 rrd_set_error("malloc im->gdes[gdi].data");
1152 rpnstack_free(&rpnstack);
1153 return -1;
1154 }
1156 /* Step through the new cdef results array and
1157 * calculate the values
1158 */
1159 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
1160 now <= im->gdes[gdi].end; now += im->gdes[gdi].step) {
1161 rpnp_t *rpnp = im->gdes[gdi].rpnp;
1163 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
1164 * in this case we are advancing by timesteps;
1165 * we use the fact that time_t is a synonym for long
1166 */
1167 if (rpn_calc(rpnp, &rpnstack, (long) now,
1168 im->gdes[gdi].data, ++dataidx) == -1) {
1169 /* rpn_calc sets the error string */
1170 rpnstack_free(&rpnstack);
1171 return -1;
1172 }
1173 } /* enumerate over time steps within a CDEF */
1174 break;
1175 default:
1176 continue;
1177 }
1178 } /* enumerate over CDEFs */
1179 rpnstack_free(&rpnstack);
1180 return 0;
1181 }
1183 /* from http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm */
1184 /* yes we are loosing precision by doing tos with floats instead of doubles
1185 but it seems more stable this way. */
1187 static int AlmostEqual2sComplement(
1188 float A,
1189 float B,
1190 int maxUlps)
1191 {
1193 int aInt = *(int *) &A;
1194 int bInt = *(int *) &B;
1195 int intDiff;
1197 /* Make sure maxUlps is non-negative and small enough that the
1198 default NAN won't compare as equal to anything. */
1200 /* assert(maxUlps > 0 && maxUlps < 4 * 1024 * 1024); */
1202 /* Make aInt lexicographically ordered as a twos-complement int */
1204 if (aInt < 0)
1205 aInt = 0x80000000l - aInt;
1207 /* Make bInt lexicographically ordered as a twos-complement int */
1209 if (bInt < 0)
1210 bInt = 0x80000000l - bInt;
1212 intDiff = abs(aInt - bInt);
1214 if (intDiff <= maxUlps)
1215 return 1;
1217 return 0;
1218 }
1220 /* massage data so, that we get one value for each x coordinate in the graph */
1221 int data_proc(
1222 image_desc_t *im)
1223 {
1224 long i, ii;
1225 double pixstep = (double) (im->end - im->start)
1226 / (double) im->xsize; /* how much time
1227 passes in one pixel */
1228 double paintval;
1229 double minval = DNAN, maxval = DNAN;
1231 unsigned long gr_time;
1233 /* memory for the processed data */
1234 for (i = 0; i < im->gdes_c; i++) {
1235 if ((im->gdes[i].gf == GF_LINE)
1236 || (im->gdes[i].gf == GF_AREA)
1237 || (im->gdes[i].gf == GF_TICK)
1238 || (im->gdes[i].gf == GF_GRAD)
1239 ) {
1240 if ((im->gdes[i].p_data = (rrd_value_t*)malloc((im->xsize + 1)
1241 * sizeof(rrd_value_t))) == NULL) {
1242 rrd_set_error("malloc data_proc");
1243 return -1;
1244 }
1245 }
1246 }
1248 for (i = 0; i < im->xsize; i++) { /* for each pixel */
1249 long vidx;
1251 gr_time = im->start + pixstep * i; /* time of the current step */
1252 paintval = 0.0;
1254 for (ii = 0; ii < im->gdes_c; ii++) {
1255 double value;
1257 switch (im->gdes[ii].gf) {
1258 case GF_LINE:
1259 case GF_AREA:
1260 case GF_GRAD:
1261 case GF_TICK:
1262 if (!im->gdes[ii].stack)
1263 paintval = 0.0;
1264 value = im->gdes[ii].yrule;
1265 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1266 /* The time of the data doesn't necessarily match
1267 ** the time of the graph. Beware.
1268 */
1269 vidx = im->gdes[ii].vidx;
1270 if (im->gdes[vidx].gf == GF_VDEF) {
1271 value = im->gdes[vidx].vf.val;
1272 } else
1273 if (((long int) gr_time >=
1274 (long int) im->gdes[vidx].start)
1275 && ((long int) gr_time <
1276 (long int) im->gdes[vidx].end)) {
1277 value = im->gdes[vidx].data[(unsigned long)
1278 floor((double)
1279 (gr_time -
1280 im->gdes[vidx].
1281 start)
1282 /
1283 im->gdes[vidx].step)
1284 * im->gdes[vidx].ds_cnt +
1285 im->gdes[vidx].ds];
1286 } else {
1287 value = DNAN;
1288 }
1289 };
1291 if (!isnan(value)) {
1292 paintval += value;
1293 im->gdes[ii].p_data[i] = paintval;
1294 /* GF_TICK: the data values are not
1295 ** relevant for min and max
1296 */
1297 if (finite(paintval) && im->gdes[ii].gf != GF_TICK) {
1298 if ((isnan(minval) || paintval < minval) &&
1299 !(im->logarithmic && paintval <= 0.0))
1300 minval = paintval;
1301 if (isnan(maxval) || paintval > maxval)
1302 maxval = paintval;
1303 }
1304 } else {
1305 im->gdes[ii].p_data[i] = DNAN;
1306 }
1307 break;
1308 case GF_STACK:
1309 rrd_set_error
1310 ("STACK should already be turned into LINE or AREA here");
1311 return -1;
1312 break;
1313 default:
1314 break;
1315 }
1316 }
1317 }
1319 /* if min or max have not been asigned a value this is because
1320 there was no data in the graph ... this is not good ...
1321 lets set these to dummy values then ... */
1323 if (im->logarithmic) {
1324 if (isnan(minval) || isnan(maxval) || maxval <= 0) {
1325 minval = 0.0; /* catching this right away below */
1326 maxval = 5.1;
1327 }
1328 /* in logarithm mode, where minval is smaller or equal
1329 to 0 make the beast just way smaller than maxval */
1330 if (minval <= 0) {
1331 minval = maxval / 10e8;
1332 }
1333 } else {
1334 if (isnan(minval) || isnan(maxval)) {
1335 minval = 0.0;
1336 maxval = 1.0;
1337 }
1338 }
1340 /* adjust min and max values given by the user */
1341 /* for logscale we add something on top */
1342 if (isnan(im->minval)
1343 || ((!im->rigid) && im->minval > minval)
1344 ) {
1345 if (im->logarithmic)
1346 im->minval = minval / 2.0;
1347 else
1348 im->minval = minval;
1349 }
1350 if (isnan(im->maxval)
1351 || (!im->rigid && im->maxval < maxval)
1352 ) {
1353 if (im->logarithmic)
1354 im->maxval = maxval * 2.0;
1355 else
1356 im->maxval = maxval;
1357 }
1359 /* make sure min is smaller than max */
1360 if (im->minval > im->maxval) {
1361 if (im->minval > 0)
1362 im->minval = 0.99 * im->maxval;
1363 else
1364 im->minval = 1.01 * im->maxval;
1365 }
1367 /* make sure min and max are not equal */
1368 if (AlmostEqual2sComplement(im->minval, im->maxval, 4)) {
1369 if (im->maxval > 0)
1370 im->maxval *= 1.01;
1371 else
1372 im->maxval *= 0.99;
1374 /* make sure min and max are not both zero */
1375 if (AlmostEqual2sComplement(im->maxval, 0, 4)) {
1376 im->maxval = 1.0;
1377 }
1378 }
1379 return 0;
1380 }
1382 static int find_first_weekday(void){
1383 static int first_weekday = -1;
1384 if (first_weekday == -1){
1385 #ifdef HAVE__NL_TIME_WEEK_1STDAY
1386 /* according to http://sourceware.org/ml/libc-locales/2009-q1/msg00011.html */
1387 long week_1stday_l = (long) nl_langinfo (_NL_TIME_WEEK_1STDAY);
1388 if (week_1stday_l == 19971130) first_weekday = 0; /* Sun */
1389 else if (week_1stday_l == 19971201) first_weekday = 1; /* Mon */
1390 else first_weekday = 1; /* we go for a monday default */
1391 #else
1392 first_weekday = 1;
1393 #endif
1394 }
1395 return first_weekday;
1396 }
1398 /* identify the point where the first gridline, label ... gets placed */
1400 time_t find_first_time(
1401 time_t start, /* what is the initial time */
1402 enum tmt_en baseint, /* what is the basic interval */
1403 long basestep /* how many if these do we jump a time */
1404 )
1405 {
1406 struct tm tm;
1408 localtime_r(&start, &tm);
1410 switch (baseint) {
1411 case TMT_SECOND:
1412 tm. tm_sec -= tm.tm_sec % basestep;
1414 break;
1415 case TMT_MINUTE:
1416 tm. tm_sec = 0;
1417 tm. tm_min -= tm.tm_min % basestep;
1419 break;
1420 case TMT_HOUR:
1421 tm. tm_sec = 0;
1422 tm. tm_min = 0;
1423 tm. tm_hour -= tm.tm_hour % basestep;
1425 break;
1426 case TMT_DAY:
1427 /* we do NOT look at the basestep for this ... */
1428 tm. tm_sec = 0;
1429 tm. tm_min = 0;
1430 tm. tm_hour = 0;
1432 break;
1433 case TMT_WEEK:
1434 /* we do NOT look at the basestep for this ... */
1435 tm. tm_sec = 0;
1436 tm. tm_min = 0;
1437 tm. tm_hour = 0;
1438 tm. tm_mday -= tm.tm_wday - find_first_weekday();
1440 if (tm.tm_wday == 0 && find_first_weekday() > 0)
1441 tm. tm_mday -= 7; /* we want the *previous* week */
1443 break;
1444 case TMT_MONTH:
1445 tm. tm_sec = 0;
1446 tm. tm_min = 0;
1447 tm. tm_hour = 0;
1448 tm. tm_mday = 1;
1449 tm. tm_mon -= tm.tm_mon % basestep;
1451 break;
1453 case TMT_YEAR:
1454 tm. tm_sec = 0;
1455 tm. tm_min = 0;
1456 tm. tm_hour = 0;
1457 tm. tm_mday = 1;
1458 tm. tm_mon = 0;
1459 tm. tm_year -= (
1460 tm.tm_year + 1900) %basestep;
1462 }
1463 return mktime(&tm);
1464 }
1466 /* identify the point where the next gridline, label ... gets placed */
1467 time_t find_next_time(
1468 time_t current, /* what is the initial time */
1469 enum tmt_en baseint, /* what is the basic interval */
1470 long basestep /* how many if these do we jump a time */
1471 )
1472 {
1473 struct tm tm;
1474 time_t madetime;
1476 localtime_r(¤t, &tm);
1478 int limit = 2;
1479 switch (baseint) {
1480 case TMT_SECOND: limit = 7200; break;
1481 case TMT_MINUTE: limit = 120; break;
1482 case TMT_HOUR: limit = 2; break;
1483 default: limit = 2; break;
1484 }
1485 do {
1486 switch (baseint) {
1487 case TMT_SECOND:
1488 tm. tm_sec += basestep;
1490 break;
1491 case TMT_MINUTE:
1492 tm. tm_min += basestep;
1494 break;
1495 case TMT_HOUR:
1496 tm. tm_hour += basestep;
1498 break;
1499 case TMT_DAY:
1500 tm. tm_mday += basestep;
1502 break;
1503 case TMT_WEEK:
1504 tm. tm_mday += 7 * basestep;
1506 break;
1507 case TMT_MONTH:
1508 tm. tm_mon += basestep;
1510 break;
1511 case TMT_YEAR:
1512 tm. tm_year += basestep;
1513 }
1514 madetime = mktime(&tm);
1515 } while (madetime == -1 && limit-- >= 0); /* this is necessary to skip impossible times
1516 like the daylight saving time skips */
1517 return madetime;
1519 }
1522 /* calculate values required for PRINT and GPRINT functions */
1524 int print_calc(
1525 image_desc_t *im)
1526 {
1527 long i, ii, validsteps;
1528 double printval;
1529 struct tm tmvdef;
1530 int graphelement = 0;
1531 long vidx;
1532 int max_ii;
1533 double magfact = -1;
1534 char *si_symb = "";
1535 char *percent_s;
1536 int prline_cnt = 0;
1538 /* wow initializing tmvdef is quite a task :-) */
1539 time_t now = time(NULL);
1541 localtime_r(&now, &tmvdef);
1542 for (i = 0; i < im->gdes_c; i++) {
1543 vidx = im->gdes[i].vidx;
1544 switch (im->gdes[i].gf) {
1545 case GF_PRINT:
1546 case GF_GPRINT:
1547 /* PRINT and GPRINT can now print VDEF generated values.
1548 * There's no need to do any calculations on them as these
1549 * calculations were already made.
1550 */
1551 if (im->gdes[vidx].gf == GF_VDEF) { /* simply use vals */
1552 printval = im->gdes[vidx].vf.val;
1553 localtime_r(&im->gdes[vidx].vf.when, &tmvdef);
1554 } else { /* need to calculate max,min,avg etcetera */
1555 max_ii = ((im->gdes[vidx].end - im->gdes[vidx].start)
1556 / im->gdes[vidx].step * im->gdes[vidx].ds_cnt);
1557 printval = DNAN;
1558 validsteps = 0;
1559 for (ii = im->gdes[vidx].ds;
1560 ii < max_ii; ii += im->gdes[vidx].ds_cnt) {
1561 if (!finite(im->gdes[vidx].data[ii]))
1562 continue;
1563 if (isnan(printval)) {
1564 printval = im->gdes[vidx].data[ii];
1565 validsteps++;
1566 continue;
1567 }
1569 switch (im->gdes[i].cf) {
1570 case CF_HWPREDICT:
1571 case CF_MHWPREDICT:
1572 case CF_DEVPREDICT:
1573 case CF_DEVSEASONAL:
1574 case CF_SEASONAL:
1575 case CF_AVERAGE:
1576 validsteps++;
1577 printval += im->gdes[vidx].data[ii];
1578 break;
1579 case CF_MINIMUM:
1580 printval = min(printval, im->gdes[vidx].data[ii]);
1581 break;
1582 case CF_FAILURES:
1583 case CF_MAXIMUM:
1584 printval = max(printval, im->gdes[vidx].data[ii]);
1585 break;
1586 case CF_LAST:
1587 printval = im->gdes[vidx].data[ii];
1588 }
1589 }
1590 if (im->gdes[i].cf == CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1591 if (validsteps > 1) {
1592 printval = (printval / validsteps);
1593 }
1594 }
1595 } /* prepare printval */
1597 if (!im->gdes[i].strftm && (percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
1598 /* Magfact is set to -1 upon entry to print_calc. If it
1599 * is still less than 0, then we need to run auto_scale.
1600 * Otherwise, put the value into the correct units. If
1601 * the value is 0, then do not set the symbol or magnification
1602 * so next the calculation will be performed again. */
1603 if (magfact < 0.0) {
1604 auto_scale(im, &printval, &si_symb, &magfact);
1605 if (printval == 0.0)
1606 magfact = -1.0;
1607 } else {
1608 printval /= magfact;
1609 }
1610 *(++percent_s) = 's';
1611 } else if (!im->gdes[i].strftm && strstr(im->gdes[i].format, "%s") != NULL) {
1612 auto_scale(im, &printval, &si_symb, &magfact);
1613 }
1615 if (im->gdes[i].gf == GF_PRINT) {
1616 rrd_infoval_t prline;
1618 if (im->gdes[i].strftm) {
1619 prline.u_str = (char*)malloc((FMT_LEG_LEN + 2) * sizeof(char));
1620 if (im->gdes[vidx].vf.never == 1) {
1621 time_clean(prline.u_str, im->gdes[i].format);
1622 } else {
1623 strftime(prline.u_str,
1624 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1625 }
1626 } else if (bad_format(im->gdes[i].format)) {
1627 rrd_set_error
1628 ("bad format for PRINT in '%s'", im->gdes[i].format);
1629 return -1;
1630 } else {
1631 prline.u_str =
1632 sprintf_alloc(im->gdes[i].format, printval, si_symb);
1633 }
1634 grinfo_push(im,
1635 sprintf_alloc
1636 ("print[%ld]", prline_cnt++), RD_I_STR, prline);
1637 free(prline.u_str);
1638 } else {
1639 /* GF_GPRINT */
1641 if (im->gdes[i].strftm) {
1642 if (im->gdes[vidx].vf.never == 1) {
1643 time_clean(im->gdes[i].legend, im->gdes[i].format);
1644 } else {
1645 strftime(im->gdes[i].legend,
1646 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1647 }
1648 } else {
1649 if (bad_format(im->gdes[i].format)) {
1650 rrd_set_error
1651 ("bad format for GPRINT in '%s'",
1652 im->gdes[i].format);
1653 return -1;
1654 }
1655 #ifdef HAVE_SNPRINTF
1656 snprintf(im->gdes[i].legend,
1657 FMT_LEG_LEN - 2,
1658 im->gdes[i].format, printval, si_symb);
1659 #else
1660 sprintf(im->gdes[i].legend,
1661 im->gdes[i].format, printval, si_symb);
1662 #endif
1663 }
1664 graphelement = 1;
1665 }
1666 break;
1667 case GF_LINE:
1668 case GF_AREA:
1669 case GF_GRAD:
1670 case GF_TICK:
1671 graphelement = 1;
1672 break;
1673 case GF_HRULE:
1674 if (isnan(im->gdes[i].yrule)) { /* we must set this here or the legend printer can not decide to print the legend */
1675 im->gdes[i].yrule = im->gdes[vidx].vf.val;
1676 };
1677 graphelement = 1;
1678 break;
1679 case GF_VRULE:
1680 if (im->gdes[i].xrule == 0) { /* again ... the legend printer needs it */
1681 im->gdes[i].xrule = im->gdes[vidx].vf.when;
1682 };
1683 graphelement = 1;
1684 break;
1685 case GF_COMMENT:
1686 case GF_TEXTALIGN:
1687 case GF_DEF:
1688 case GF_CDEF:
1689 case GF_VDEF:
1690 #ifdef WITH_PIECHART
1691 case GF_PART:
1692 #endif
1693 case GF_SHIFT:
1694 case GF_XPORT:
1695 break;
1696 case GF_STACK:
1697 rrd_set_error
1698 ("STACK should already be turned into LINE or AREA here");
1699 return -1;
1700 break;
1701 }
1702 }
1703 return graphelement;
1704 }
1708 /* place legends with color spots */
1709 int leg_place(
1710 image_desc_t *im,
1711 int calc_width)
1712 {
1713 /* graph labels */
1714 int interleg = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1715 int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1716 int fill = 0, fill_last;
1717 double legendwidth; // = im->ximg - 2 * border;
1718 int leg_c = 0;
1719 double leg_x = border;
1720 int leg_y = 0; //im->yimg;
1721 int leg_y_prev = 0; // im->yimg;
1722 int leg_cc;
1723 double glue = 0;
1724 int i, ii, mark = 0;
1725 char default_txtalign = TXA_JUSTIFIED; /*default line orientation */
1726 int *legspace;
1727 char *tab;
1728 char saved_legend[FMT_LEG_LEN + 5];
1730 if(calc_width){
1731 legendwidth = 0;
1732 }
1733 else{
1734 legendwidth = im->legendwidth - 2 * border;
1735 }
1738 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
1739 if ((legspace = (int*)malloc(im->gdes_c * sizeof(int))) == NULL) {
1740 rrd_set_error("malloc for legspace");
1741 return -1;
1742 }
1744 for (i = 0; i < im->gdes_c; i++) {
1745 char prt_fctn; /*special printfunctions */
1746 if(calc_width){
1747 strcpy(saved_legend, im->gdes[i].legend);
1748 }
1750 fill_last = fill;
1751 /* hide legends for rules which are not displayed */
1752 if (im->gdes[i].gf == GF_TEXTALIGN) {
1753 default_txtalign = im->gdes[i].txtalign;
1754 }
1756 if (!(im->extra_flags & FORCE_RULES_LEGEND)) {
1757 if (im->gdes[i].gf == GF_HRULE
1758 && (im->gdes[i].yrule <
1759 im->minval || im->gdes[i].yrule > im->maxval))
1760 im->gdes[i].legend[0] = '\0';
1761 if (im->gdes[i].gf == GF_VRULE
1762 && (im->gdes[i].xrule <
1763 im->start || im->gdes[i].xrule > im->end))
1764 im->gdes[i].legend[0] = '\0';
1765 }
1767 /* turn \\t into tab */
1768 while ((tab = strstr(im->gdes[i].legend, "\\t"))) {
1769 memmove(tab, tab + 1, strlen(tab));
1770 tab[0] = (char) 9;
1771 }
1773 leg_cc = strlen(im->gdes[i].legend);
1774 /* is there a controle code at the end of the legend string ? */
1775 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc - 2] == '\\') {
1776 prt_fctn = im->gdes[i].legend[leg_cc - 1];
1777 leg_cc -= 2;
1778 im->gdes[i].legend[leg_cc] = '\0';
1779 } else {
1780 prt_fctn = '\0';
1781 }
1782 /* only valid control codes */
1783 if (prt_fctn != 'l' && prt_fctn != 'n' && /* a synonym for l */
1784 prt_fctn != 'r' &&
1785 prt_fctn != 'j' &&
1786 prt_fctn != 'c' &&
1787 prt_fctn != 'u' &&
1788 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
1789 free(legspace);
1790 rrd_set_error
1791 ("Unknown control code at the end of '%s\\%c'",
1792 im->gdes[i].legend, prt_fctn);
1793 return -1;
1794 }
1795 /* \n -> \l */
1796 if (prt_fctn == 'n') {
1797 prt_fctn = 'l';
1798 }
1800 /* remove exess space from the end of the legend for \g */
1801 while (prt_fctn == 'g' &&
1802 leg_cc > 0 && im->gdes[i].legend[leg_cc - 1] == ' ') {
1803 leg_cc--;
1804 im->gdes[i].legend[leg_cc] = '\0';
1805 }
1807 if (leg_cc != 0) {
1809 /* no interleg space if string ends in \g */
1810 legspace[i] = (prt_fctn == 'g' ? 0 : interleg);
1811 if (fill > 0) {
1812 fill += legspace[i];
1813 }
1814 fill +=
1815 gfx_get_text_width(im,
1816 fill + border,
1817 im->
1818 text_prop
1819 [TEXT_PROP_LEGEND].
1820 font_desc,
1821 im->tabwidth, im->gdes[i].legend);
1822 leg_c++;
1823 } else {
1824 legspace[i] = 0;
1825 }
1826 /* who said there was a special tag ... ? */
1827 if (prt_fctn == 'g') {
1828 prt_fctn = '\0';
1829 }
1831 if (prt_fctn == '\0') {
1832 if(calc_width && (fill > legendwidth)){
1833 legendwidth = fill;
1834 }
1835 if (i == im->gdes_c - 1 || fill > legendwidth) {
1836 /* just one legend item is left right or center */
1837 switch (default_txtalign) {
1838 case TXA_RIGHT:
1839 prt_fctn = 'r';
1840 break;
1841 case TXA_CENTER:
1842 prt_fctn = 'c';
1843 break;
1844 case TXA_JUSTIFIED:
1845 prt_fctn = 'j';
1846 break;
1847 default:
1848 prt_fctn = 'l';
1849 break;
1850 }
1851 }
1852 /* is it time to place the legends ? */
1853 if (fill > legendwidth) {
1854 if (leg_c > 1) {
1855 /* go back one */
1856 i--;
1857 fill = fill_last;
1858 leg_c--;
1859 }
1860 }
1861 if (leg_c == 1 && prt_fctn == 'j') {
1862 prt_fctn = 'l';
1863 }
1864 }
1866 if (prt_fctn != '\0') {
1867 leg_x = border;
1868 if (leg_c >= 2 && prt_fctn == 'j') {
1869 glue = (double)(legendwidth - fill) / (double)(leg_c - 1);
1870 } else {
1871 glue = 0;
1872 }
1873 if (prt_fctn == 'c')
1874 leg_x = border + (double)(legendwidth - fill) / 2.0;
1875 if (prt_fctn == 'r')
1876 leg_x = legendwidth - fill + border;
1877 for (ii = mark; ii <= i; ii++) {
1878 if (im->gdes[ii].legend[0] == '\0')
1879 continue; /* skip empty legends */
1880 im->gdes[ii].leg_x = leg_x;
1881 im->gdes[ii].leg_y = leg_y + border;
1882 leg_x +=
1883 (double)gfx_get_text_width(im, leg_x,
1884 im->
1885 text_prop
1886 [TEXT_PROP_LEGEND].
1887 font_desc,
1888 im->tabwidth, im->gdes[ii].legend)
1889 +(double)legspace[ii]
1890 + glue;
1891 }
1892 leg_y_prev = leg_y;
1893 if (leg_x > border || prt_fctn == 's')
1894 leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1895 if (prt_fctn == 's')
1896 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
1897 if (prt_fctn == 'u')
1898 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size *1.8;
1900 if(calc_width && (fill > legendwidth)){
1901 legendwidth = fill;
1902 }
1903 fill = 0;
1904 leg_c = 0;
1905 mark = ii;
1906 }
1908 if(calc_width){
1909 strcpy(im->gdes[i].legend, saved_legend);
1910 }
1911 }
1913 if(calc_width){
1914 im->legendwidth = legendwidth + 2 * border;
1915 }
1916 else{
1917 im->legendheight = leg_y + border * 0.6;
1918 }
1919 free(legspace);
1920 }
1921 return 0;
1922 }
1924 /* create a grid on the graph. it determines what to do
1925 from the values of xsize, start and end */
1927 /* the xaxis labels are determined from the number of seconds per pixel
1928 in the requested graph */
1930 int calc_horizontal_grid(
1931 image_desc_t
1932 *im)
1933 {
1934 double range;
1935 double scaledrange;
1936 int pixel, i;
1937 int gridind = 0;
1938 int decimals, fractionals;
1940 im->ygrid_scale.labfact = 2;
1941 range = im->maxval - im->minval;
1942 scaledrange = range / im->magfact;
1943 /* does the scale of this graph make it impossible to put lines
1944 on it? If so, give up. */
1945 if (isnan(scaledrange)) {
1946 return 0;
1947 }
1949 /* find grid spaceing */
1950 pixel = 1;
1951 if (isnan(im->ygridstep)) {
1952 if (im->extra_flags & ALTYGRID) {
1953 /* find the value with max number of digits. Get number of digits */
1954 decimals =
1955 ceil(log10
1956 (max(fabs(im->maxval), fabs(im->minval)) *
1957 im->viewfactor / im->magfact));
1958 if (decimals <= 0) /* everything is small. make place for zero */
1959 decimals = 1;
1960 im->ygrid_scale.gridstep =
1961 pow((double) 10,
1962 floor(log10(range * im->viewfactor / im->magfact))) /
1963 im->viewfactor * im->magfact;
1964 if (im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1965 im->ygrid_scale.gridstep = 0.1;
1966 /* should have at least 5 lines but no more then 15 */
1967 if (range / im->ygrid_scale.gridstep < 5
1968 && im->ygrid_scale.gridstep >= 30)
1969 im->ygrid_scale.gridstep /= 10;
1970 if (range / im->ygrid_scale.gridstep > 15)
1971 im->ygrid_scale.gridstep *= 10;
1972 if (range / im->ygrid_scale.gridstep > 5) {
1973 im->ygrid_scale.labfact = 1;
1974 if (range / im->ygrid_scale.gridstep > 8
1975 || im->ygrid_scale.gridstep <
1976 1.8 * im->text_prop[TEXT_PROP_AXIS].size)
1977 im->ygrid_scale.labfact = 2;
1978 } else {
1979 im->ygrid_scale.gridstep /= 5;
1980 im->ygrid_scale.labfact = 5;
1981 }
1982 fractionals =
1983 floor(log10
1984 (im->ygrid_scale.gridstep *
1985 (double) im->ygrid_scale.labfact * im->viewfactor /
1986 im->magfact));
1987 if (fractionals < 0) { /* small amplitude. */
1988 int len = decimals - fractionals + 1;
1990 if (im->unitslength < len + 2)
1991 im->unitslength = len + 2;
1992 sprintf(im->ygrid_scale.labfmt,
1993 "%%%d.%df%s", len,
1994 -fractionals, (im->symbol != ' ' ? " %c" : ""));
1995 } else {
1996 int len = decimals + 1;
1998 if (im->unitslength < len + 2)
1999 im->unitslength = len + 2;
2000 sprintf(im->ygrid_scale.labfmt,
2001 "%%%d.0f%s", len, (im->symbol != ' ' ? " %c" : ""));
2002 }
2003 } else { /* classic rrd grid */
2004 for (i = 0; ylab[i].grid > 0; i++) {
2005 pixel = im->ysize / (scaledrange / ylab[i].grid);
2006 gridind = i;
2007 if (pixel >= 5)
2008 break;
2009 }
2011 for (i = 0; i < 4; i++) {
2012 if (pixel * ylab[gridind].lfac[i] >=
2013 1.8 * im->text_prop[TEXT_PROP_AXIS].size) {
2014 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
2015 break;
2016 }
2017 }
2019 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
2020 }
2021 } else {
2022 im->ygrid_scale.gridstep = im->ygridstep;
2023 im->ygrid_scale.labfact = im->ylabfact;
2024 }
2025 return 1;
2026 }
2028 int draw_horizontal_grid(
2029 image_desc_t
2030 *im)
2031 {
2032 int i;
2033 double scaledstep;
2034 char graph_label[100];
2035 int nlabels = 0;
2036 double X0 = im->xorigin;
2037 double X1 = im->xorigin + im->xsize;
2038 int sgrid = (int) (im->minval / im->ygrid_scale.gridstep - 1);
2039 int egrid = (int) (im->maxval / im->ygrid_scale.gridstep + 1);
2040 double MaxY;
2041 double second_axis_magfact = 0;
2042 char *second_axis_symb = "";
2044 scaledstep =
2045 im->ygrid_scale.gridstep /
2046 (double) im->magfact * (double) im->viewfactor;
2047 MaxY = scaledstep * (double) egrid;
2048 for (i = sgrid; i <= egrid; i++) {
2049 double Y0 = ytr(im,
2050 im->ygrid_scale.gridstep * i);
2051 double YN = ytr(im,
2052 im->ygrid_scale.gridstep * (i + 1));
2054 if (floor(Y0 + 0.5) >=
2055 im->yorigin - im->ysize && floor(Y0 + 0.5) <= im->yorigin) {
2056 /* Make sure at least 2 grid labels are shown, even if it doesn't agree
2057 with the chosen settings. Add a label if required by settings, or if
2058 there is only one label so far and the next grid line is out of bounds. */
2059 if (i % im->ygrid_scale.labfact == 0
2060 || (nlabels == 1
2061 && (YN < im->yorigin - im->ysize || YN > im->yorigin))) {
2062 if (im->symbol == ' ') {
2063 if (im->extra_flags & ALTYGRID) {
2064 sprintf(graph_label,
2065 im->ygrid_scale.labfmt,
2066 scaledstep * (double) i);
2067 } else {
2068 if (MaxY < 10) {
2069 sprintf(graph_label, "%4.1f",
2070 scaledstep * (double) i);
2071 } else {
2072 sprintf(graph_label, "%4.0f",
2073 scaledstep * (double) i);
2074 }
2075 }
2076 } else {
2077 char sisym = (i == 0 ? ' ' : im->symbol);
2079 if (im->extra_flags & ALTYGRID) {
2080 sprintf(graph_label,
2081 im->ygrid_scale.labfmt,
2082 scaledstep * (double) i, sisym);
2083 } else {
2084 if (MaxY < 10) {
2085 sprintf(graph_label, "%4.1f %c",
2086 scaledstep * (double) i, sisym);
2087 } else {
2088 sprintf(graph_label, "%4.0f %c",
2089 scaledstep * (double) i, sisym);
2090 }
2091 }
2092 }
2093 nlabels++;
2094 if (im->second_axis_scale != 0){
2095 char graph_label_right[100];
2096 double sval = im->ygrid_scale.gridstep*(double)i*im->second_axis_scale+im->second_axis_shift;
2097 if (im->second_axis_format[0] == '\0'){
2098 if (!second_axis_magfact){
2099 double dummy = im->ygrid_scale.gridstep*(double)(sgrid+egrid)/2.0*im->second_axis_scale+im->second_axis_shift;
2100 auto_scale(im,&dummy,&second_axis_symb,&second_axis_magfact);
2101 }
2102 sval /= second_axis_magfact;
2104 if(MaxY < 10) {
2105 sprintf(graph_label_right,"%5.1f %s",sval,second_axis_symb);
2106 } else {
2107 sprintf(graph_label_right,"%5.0f %s",sval,second_axis_symb);
2108 }
2109 }
2110 else {
2111 sprintf(graph_label_right,im->second_axis_format,sval);
2112 }
2113 gfx_text ( im,
2114 X1+7, Y0,
2115 im->graph_col[GRC_FONT],
2116 im->text_prop[TEXT_PROP_AXIS].font_desc,
2117 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2118 graph_label_right );
2119 }
2121 gfx_text(im,
2122 X0 -
2123 im->
2124 text_prop[TEXT_PROP_AXIS].
2125 size, Y0,
2126 im->graph_col[GRC_FONT],
2127 im->
2128 text_prop[TEXT_PROP_AXIS].
2129 font_desc,
2130 im->tabwidth, 0.0,
2131 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2132 gfx_line(im, X0 - 2, Y0, X0, Y0,
2133 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2134 gfx_line(im, X1, Y0, X1 + 2, Y0,
2135 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2136 gfx_dashed_line(im, X0 - 2, Y0,
2137 X1 + 2, Y0,
2138 MGRIDWIDTH,
2139 im->
2140 graph_col
2141 [GRC_MGRID],
2142 im->grid_dash_on, im->grid_dash_off);
2143 } else if (!(im->extra_flags & NOMINOR)) {
2144 gfx_line(im,
2145 X0 - 2, Y0,
2146 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2147 gfx_line(im, X1, Y0, X1 + 2, Y0,
2148 GRIDWIDTH, im->graph_col[GRC_GRID]);
2149 gfx_dashed_line(im, X0 - 1, Y0,
2150 X1 + 1, Y0,
2151 GRIDWIDTH,
2152 im->
2153 graph_col[GRC_GRID],
2154 im->grid_dash_on, im->grid_dash_off);
2155 }
2156 }
2157 }
2158 return 1;
2159 }
2161 /* this is frexp for base 10 */
2162 double frexp10(
2163 double,
2164 double *);
2165 double frexp10(
2166 double x,
2167 double *e)
2168 {
2169 double mnt;
2170 int iexp;
2172 iexp = floor(log((double)fabs(x)) / log((double)10));
2173 mnt = x / pow(10.0, iexp);
2174 if (mnt >= 10.0) {
2175 iexp++;
2176 mnt = x / pow(10.0, iexp);
2177 }
2178 *e = iexp;
2179 return mnt;
2180 }
2183 /* logaritmic horizontal grid */
2184 int horizontal_log_grid(
2185 image_desc_t
2186 *im)
2187 {
2188 double yloglab[][10] = {
2189 {
2190 1.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0,
2191 0.0, 0.0, 0.0}, {
2192 1.0, 5.0, 10., 0.0, 0.0, 0.0, 0.0,
2193 0.0, 0.0, 0.0}, {
2194 1.0, 2.0, 5.0, 7.0, 10., 0.0, 0.0,
2195 0.0, 0.0, 0.0}, {
2196 1.0, 2.0, 4.0,
2197 6.0, 8.0, 10.,
2198 0.0,
2199 0.0, 0.0, 0.0}, {
2200 1.0,
2201 2.0,
2202 3.0,
2203 4.0,
2204 5.0,
2205 6.0,
2206 7.0,
2207 8.0,
2208 9.0,
2209 10.},
2210 {
2211 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* last line */
2212 };
2213 int i, j, val_exp, min_exp;
2214 double nex; /* number of decades in data */
2215 double logscale; /* scale in logarithmic space */
2216 int exfrac = 1; /* decade spacing */
2217 int mid = -1; /* row in yloglab for major grid */
2218 double mspac; /* smallest major grid spacing (pixels) */
2219 int flab; /* first value in yloglab to use */
2220 double value, tmp, pre_value;
2221 double X0, X1, Y0;
2222 char graph_label[100];
2224 nex = log10(im->maxval / im->minval);
2225 logscale = im->ysize / nex;
2226 /* major spacing for data with high dynamic range */
2227 while (logscale * exfrac < 3 * im->text_prop[TEXT_PROP_LEGEND].size) {
2228 if (exfrac == 1)
2229 exfrac = 3;
2230 else
2231 exfrac += 3;
2232 }
2234 /* major spacing for less dynamic data */
2235 do {
2236 /* search best row in yloglab */
2237 mid++;
2238 for (i = 0; yloglab[mid][i + 1] < 10.0; i++);
2239 mspac = logscale * log10(10.0 / yloglab[mid][i]);
2240 }
2241 while (mspac >
2242 2 * im->text_prop[TEXT_PROP_LEGEND].size && yloglab[mid][0] > 0);
2243 if (mid)
2244 mid--;
2245 /* find first value in yloglab */
2246 for (flab = 0;
2247 yloglab[mid][flab] < 10
2248 && frexp10(im->minval, &tmp) > yloglab[mid][flab]; flab++);
2249 if (yloglab[mid][flab] == 10.0) {
2250 tmp += 1.0;
2251 flab = 0;
2252 }
2253 val_exp = tmp;
2254 if (val_exp % exfrac)
2255 val_exp += abs(-val_exp % exfrac);
2256 X0 = im->xorigin;
2257 X1 = im->xorigin + im->xsize;
2258 /* draw grid */
2259 pre_value = DNAN;
2260 while (1) {
2262 value = yloglab[mid][flab] * pow(10.0, val_exp);
2263 if (AlmostEqual2sComplement(value, pre_value, 4))
2264 break; /* it seems we are not converging */
2265 pre_value = value;
2266 Y0 = ytr(im, value);
2267 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2268 break;
2269 /* major grid line */
2270 gfx_line(im,
2271 X0 - 2, Y0, X0, Y0, MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2272 gfx_line(im, X1, Y0, X1 + 2, Y0,
2273 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2274 gfx_dashed_line(im, X0 - 2, Y0,
2275 X1 + 2, Y0,
2276 MGRIDWIDTH,
2277 im->
2278 graph_col
2279 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2280 /* label */
2281 if (im->extra_flags & FORCE_UNITS_SI) {
2282 int scale;
2283 double pvalue;
2284 char symbol;
2286 scale = floor(val_exp / 3.0);
2287 if (value >= 1.0)
2288 pvalue = pow(10.0, val_exp % 3);
2289 else
2290 pvalue = pow(10.0, ((val_exp + 1) % 3) + 2);
2291 pvalue *= yloglab[mid][flab];
2292 if (((scale + si_symbcenter) < (int) sizeof(si_symbol))
2293 && ((scale + si_symbcenter) >= 0))
2294 symbol = si_symbol[scale + si_symbcenter];
2295 else
2296 symbol = '?';
2297 sprintf(graph_label, "%3.0f %c", pvalue, symbol);
2298 } else {
2299 sprintf(graph_label, "%3.0e", value);
2300 }
2301 if (im->second_axis_scale != 0){
2302 char graph_label_right[100];
2303 double sval = value*im->second_axis_scale+im->second_axis_shift;
2304 if (im->second_axis_format[0] == '\0'){
2305 if (im->extra_flags & FORCE_UNITS_SI) {
2306 double mfac = 1;
2307 char *symb = "";
2308 auto_scale(im,&sval,&symb,&mfac);
2309 sprintf(graph_label_right,"%4.0f %s", sval,symb);
2310 }
2311 else {
2312 sprintf(graph_label_right,"%3.0e", sval);
2313 }
2314 }
2315 else {
2316 sprintf(graph_label_right,im->second_axis_format,sval,"");
2317 }
2319 gfx_text ( im,
2320 X1+7, Y0,
2321 im->graph_col[GRC_FONT],
2322 im->text_prop[TEXT_PROP_AXIS].font_desc,
2323 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2324 graph_label_right );
2325 }
2327 gfx_text(im,
2328 X0 -
2329 im->
2330 text_prop[TEXT_PROP_AXIS].
2331 size, Y0,
2332 im->graph_col[GRC_FONT],
2333 im->
2334 text_prop[TEXT_PROP_AXIS].
2335 font_desc,
2336 im->tabwidth, 0.0,
2337 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2338 /* minor grid */
2339 if (mid < 4 && exfrac == 1) {
2340 /* find first and last minor line behind current major line
2341 * i is the first line and j tha last */
2342 if (flab == 0) {
2343 min_exp = val_exp - 1;
2344 for (i = 1; yloglab[mid][i] < 10.0; i++);
2345 i = yloglab[mid][i - 1] + 1;
2346 j = 10;
2347 } else {
2348 min_exp = val_exp;
2349 i = yloglab[mid][flab - 1] + 1;
2350 j = yloglab[mid][flab];
2351 }
2353 /* draw minor lines below current major line */
2354 for (; i < j; i++) {
2356 value = i * pow(10.0, min_exp);
2357 if (value < im->minval)
2358 continue;
2359 Y0 = ytr(im, value);
2360 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2361 break;
2362 /* draw lines */
2363 gfx_line(im,
2364 X0 - 2, Y0,
2365 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2366 gfx_line(im, X1, Y0, X1 + 2, Y0,
2367 GRIDWIDTH, im->graph_col[GRC_GRID]);
2368 gfx_dashed_line(im, X0 - 1, Y0,
2369 X1 + 1, Y0,
2370 GRIDWIDTH,
2371 im->
2372 graph_col[GRC_GRID],
2373 im->grid_dash_on, im->grid_dash_off);
2374 }
2375 } else if (exfrac > 1) {
2376 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2377 value = pow(10.0, i);
2378 if (value < im->minval)
2379 continue;
2380 Y0 = ytr(im, value);
2381 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2382 break;
2383 /* draw lines */
2384 gfx_line(im,
2385 X0 - 2, Y0,
2386 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2387 gfx_line(im, X1, Y0, X1 + 2, Y0,
2388 GRIDWIDTH, im->graph_col[GRC_GRID]);
2389 gfx_dashed_line(im, X0 - 1, Y0,
2390 X1 + 1, Y0,
2391 GRIDWIDTH,
2392 im->
2393 graph_col[GRC_GRID],
2394 im->grid_dash_on, im->grid_dash_off);
2395 }
2396 }
2398 /* next decade */
2399 if (yloglab[mid][++flab] == 10.0) {
2400 flab = 0;
2401 val_exp += exfrac;
2402 }
2403 }
2405 /* draw minor lines after highest major line */
2406 if (mid < 4 && exfrac == 1) {
2407 /* find first and last minor line below current major line
2408 * i is the first line and j tha last */
2409 if (flab == 0) {
2410 min_exp = val_exp - 1;
2411 for (i = 1; yloglab[mid][i] < 10.0; i++);
2412 i = yloglab[mid][i - 1] + 1;
2413 j = 10;
2414 } else {
2415 min_exp = val_exp;
2416 i = yloglab[mid][flab - 1] + 1;
2417 j = yloglab[mid][flab];
2418 }
2420 /* draw minor lines below current major line */
2421 for (; i < j; i++) {
2423 value = i * pow(10.0, min_exp);
2424 if (value < im->minval)
2425 continue;
2426 Y0 = ytr(im, value);
2427 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2428 break;
2429 /* draw lines */
2430 gfx_line(im,
2431 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2432 gfx_line(im, X1, Y0, X1 + 2, Y0,
2433 GRIDWIDTH, im->graph_col[GRC_GRID]);
2434 gfx_dashed_line(im, X0 - 1, Y0,
2435 X1 + 1, Y0,
2436 GRIDWIDTH,
2437 im->
2438 graph_col[GRC_GRID],
2439 im->grid_dash_on, im->grid_dash_off);
2440 }
2441 }
2442 /* fancy minor gridlines */
2443 else if (exfrac > 1) {
2444 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2445 value = pow(10.0, i);
2446 if (value < im->minval)
2447 continue;
2448 Y0 = ytr(im, value);
2449 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2450 break;
2451 /* draw lines */
2452 gfx_line(im,
2453 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2454 gfx_line(im, X1, Y0, X1 + 2, Y0,
2455 GRIDWIDTH, im->graph_col[GRC_GRID]);
2456 gfx_dashed_line(im, X0 - 1, Y0,
2457 X1 + 1, Y0,
2458 GRIDWIDTH,
2459 im->
2460 graph_col[GRC_GRID],
2461 im->grid_dash_on, im->grid_dash_off);
2462 }
2463 }
2465 return 1;
2466 }
2469 void vertical_grid(
2470 image_desc_t *im)
2471 {
2472 int xlab_sel; /* which sort of label and grid ? */
2473 time_t ti, tilab, timajor;
2474 long factor;
2475 char graph_label[100];
2476 double X0, Y0, Y1; /* points for filled graph and more */
2477 struct tm tm;
2479 /* the type of time grid is determined by finding
2480 the number of seconds per pixel in the graph */
2481 if (im->xlab_user.minsec == -1) {
2482 factor = (im->end - im->start) / im->xsize;
2483 xlab_sel = 0;
2484 while (xlab[xlab_sel + 1].minsec !=
2485 -1 && xlab[xlab_sel + 1].minsec <= factor) {
2486 xlab_sel++;
2487 } /* pick the last one */
2488 while (xlab[xlab_sel - 1].minsec ==
2489 xlab[xlab_sel].minsec
2490 && xlab[xlab_sel].length > (im->end - im->start)) {
2491 xlab_sel--;
2492 } /* go back to the smallest size */
2493 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
2494 im->xlab_user.gridst = xlab[xlab_sel].gridst;
2495 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
2496 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
2497 im->xlab_user.labtm = xlab[xlab_sel].labtm;
2498 im->xlab_user.labst = xlab[xlab_sel].labst;
2499 im->xlab_user.precis = xlab[xlab_sel].precis;
2500 im->xlab_user.stst = xlab[xlab_sel].stst;
2501 }
2503 /* y coords are the same for every line ... */
2504 Y0 = im->yorigin;
2505 Y1 = im->yorigin - im->ysize;
2506 /* paint the minor grid */
2507 if (!(im->extra_flags & NOMINOR)) {
2508 for (ti = find_first_time(im->start,
2509 im->
2510 xlab_user.
2511 gridtm,
2512 im->
2513 xlab_user.
2514 gridst),
2515 timajor =
2516 find_first_time(im->start,
2517 im->xlab_user.
2518 mgridtm,
2519 im->xlab_user.
2520 mgridst);
2521 ti < im->end && ti != -1;
2522 ti =
2523 find_next_time(ti, im->xlab_user.gridtm, im->xlab_user.gridst)
2524 ) {
2525 /* are we inside the graph ? */
2526 if (ti < im->start || ti > im->end)
2527 continue;
2528 while (timajor < ti && timajor != -1) {
2529 timajor = find_next_time(timajor,
2530 im->
2531 xlab_user.
2532 mgridtm, im->xlab_user.mgridst);
2533 }
2534 if (timajor == -1) break; /* fail in case of problems with time increments */
2535 if (ti == timajor)
2536 continue; /* skip as falls on major grid line */
2537 X0 = xtr(im, ti);
2538 gfx_line(im, X0, Y1 - 2, X0, Y1,
2539 GRIDWIDTH, im->graph_col[GRC_GRID]);
2540 gfx_line(im, X0, Y0, X0, Y0 + 2,
2541 GRIDWIDTH, im->graph_col[GRC_GRID]);
2542 gfx_dashed_line(im, X0, Y0 + 1, X0,
2543 Y1 - 1, GRIDWIDTH,
2544 im->
2545 graph_col[GRC_GRID],
2546 im->grid_dash_on, im->grid_dash_off);
2547 }
2548 }
2550 /* paint the major grid */
2551 for (ti = find_first_time(im->start,
2552 im->
2553 xlab_user.
2554 mgridtm,
2555 im->
2556 xlab_user.
2557 mgridst);
2558 ti < im->end && ti != -1;
2559 ti = find_next_time(ti, im->xlab_user.mgridtm, im->xlab_user.mgridst)
2560 ) {
2561 /* are we inside the graph ? */
2562 if (ti < im->start || ti > im->end)
2563 continue;
2564 X0 = xtr(im, ti);
2565 gfx_line(im, X0, Y1 - 2, X0, Y1,
2566 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2567 gfx_line(im, X0, Y0, X0, Y0 + 3,
2568 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2569 gfx_dashed_line(im, X0, Y0 + 3, X0,
2570 Y1 - 2, MGRIDWIDTH,
2571 im->
2572 graph_col
2573 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2574 }
2575 /* paint the labels below the graph */
2576 for (ti =
2577 find_first_time(im->start -
2578 im->xlab_user.
2579 precis / 2,
2580 im->xlab_user.
2581 labtm,
2582 im->xlab_user.
2583 labst);
2584 (ti <=
2585 im->end -
2586 im->xlab_user.precis / 2) && ti != -1;
2587 ti = find_next_time(ti, im->xlab_user.labtm, im->xlab_user.labst)
2588 ) {
2589 tilab = ti + im->xlab_user.precis / 2; /* correct time for the label */
2590 /* are we inside the graph ? */
2591 if (tilab < im->start || tilab > im->end)
2592 continue;
2593 #if HAVE_STRFTIME
2594 localtime_r(&tilab, &tm);
2595 strftime(graph_label, 99, im->xlab_user.stst, &tm);
2596 #else
2597 # error "your libc has no strftime I guess we'll abort the exercise here."
2598 #endif
2599 gfx_text(im,
2600 xtr(im, tilab),
2601 Y0 + 3,
2602 im->graph_col[GRC_FONT],
2603 im->
2604 text_prop[TEXT_PROP_AXIS].
2605 font_desc,
2606 im->tabwidth, 0.0,
2607 GFX_H_CENTER, GFX_V_TOP, graph_label);
2608 }
2610 }
2613 void axis_paint(
2614 image_desc_t *im)
2615 {
2616 /* draw x and y axis */
2617 /* gfx_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
2618 im->xorigin+im->xsize,im->yorigin-im->ysize,
2619 GRIDWIDTH, im->graph_col[GRC_AXIS]);
2621 gfx_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
2622 im->xorigin+im->xsize,im->yorigin-im->ysize,
2623 GRIDWIDTH, im->graph_col[GRC_AXIS]); */
2625 gfx_line(im, im->xorigin - 4,
2626 im->yorigin,
2627 im->xorigin + im->xsize +
2628 4, im->yorigin, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2629 gfx_line(im, im->xorigin,
2630 im->yorigin + 4,
2631 im->xorigin,
2632 im->yorigin - im->ysize -
2633 4, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2634 /* arrow for X and Y axis direction */
2635 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 */
2636 im->graph_col[GRC_ARROW]);
2637 gfx_close_path(im);
2638 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 */
2639 im->graph_col[GRC_ARROW]);
2640 gfx_close_path(im);
2641 if (im->second_axis_scale != 0){
2642 gfx_line ( im, im->xorigin+im->xsize,im->yorigin+4,
2643 im->xorigin+im->xsize,im->yorigin-im->ysize-4,
2644 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2645 gfx_new_area ( im,
2646 im->xorigin+im->xsize-2, im->yorigin-im->ysize-2,
2647 im->xorigin+im->xsize+3, im->yorigin-im->ysize-2,
2648 im->xorigin+im->xsize, im->yorigin-im->ysize-7, /* LINEOFFSET */
2649 im->graph_col[GRC_ARROW]);
2650 gfx_close_path(im);
2651 }
2653 }
2655 void grid_paint(
2656 image_desc_t *im)
2657 {
2658 long i;
2659 int res = 0;
2660 double X0, Y0; /* points for filled graph and more */
2661 struct gfx_color_t water_color;
2663 if (im->draw_3d_border > 0) {
2664 /* draw 3d border */
2665 i = im->draw_3d_border;
2666 gfx_new_area(im, 0, im->yimg,
2667 i, im->yimg - i, i, i, im->graph_col[GRC_SHADEA]);
2668 gfx_add_point(im, im->ximg - i, i);
2669 gfx_add_point(im, im->ximg, 0);
2670 gfx_add_point(im, 0, 0);
2671 gfx_close_path(im);
2672 gfx_new_area(im, i, im->yimg - i,
2673 im->ximg - i,
2674 im->yimg - i, im->ximg - i, i, im->graph_col[GRC_SHADEB]);
2675 gfx_add_point(im, im->ximg, 0);
2676 gfx_add_point(im, im->ximg, im->yimg);
2677 gfx_add_point(im, 0, im->yimg);
2678 gfx_close_path(im);
2679 }
2680 if (im->draw_x_grid == 1)
2681 vertical_grid(im);
2682 if (im->draw_y_grid == 1) {
2683 if (im->logarithmic) {
2684 res = horizontal_log_grid(im);
2685 } else {
2686 res = draw_horizontal_grid(im);
2687 }
2689 /* dont draw horizontal grid if there is no min and max val */
2690 if (!res) {
2691 char *nodata = "No Data found";
2693 gfx_text(im, im->ximg / 2,
2694 (2 * im->yorigin -
2695 im->ysize) / 2,
2696 im->graph_col[GRC_FONT],
2697 im->
2698 text_prop[TEXT_PROP_AXIS].
2699 font_desc,
2700 im->tabwidth, 0.0,
2701 GFX_H_CENTER, GFX_V_CENTER, nodata);
2702 }
2703 }
2705 /* yaxis unit description */
2706 if (im->ylegend[0] != '\0'){
2707 gfx_text(im,
2708 im->xOriginLegendY+10,
2709 im->yOriginLegendY,
2710 im->graph_col[GRC_FONT],
2711 im->
2712 text_prop[TEXT_PROP_UNIT].
2713 font_desc,
2714 im->tabwidth,
2715 RRDGRAPH_YLEGEND_ANGLE, GFX_H_CENTER, GFX_V_CENTER, im->ylegend);
2717 }
2718 if (im->second_axis_legend[0] != '\0'){
2719 gfx_text( im,
2720 im->xOriginLegendY2+10,
2721 im->yOriginLegendY2,
2722 im->graph_col[GRC_FONT],
2723 im->text_prop[TEXT_PROP_UNIT].font_desc,
2724 im->tabwidth,
2725 RRDGRAPH_YLEGEND_ANGLE,
2726 GFX_H_CENTER, GFX_V_CENTER,
2727 im->second_axis_legend);
2728 }
2730 /* graph title */
2731 gfx_text(im,
2732 im->xOriginTitle, im->yOriginTitle+6,
2733 im->graph_col[GRC_FONT],
2734 im->
2735 text_prop[TEXT_PROP_TITLE].
2736 font_desc,
2737 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP, im->title);
2738 /* rrdtool 'logo' */
2739 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
2740 water_color = im->graph_col[GRC_FONT];
2741 water_color.alpha = 0.3;
2742 double xpos = im->legendposition == EAST ? im->xOriginLegendY : im->ximg - 4;
2743 gfx_text(im, xpos, 5,
2744 water_color,
2745 im->
2746 text_prop[TEXT_PROP_WATERMARK].
2747 font_desc, im->tabwidth,
2748 -90, GFX_H_LEFT, GFX_V_TOP, "RRDTOOL / TOBI OETIKER");
2749 }
2750 /* graph watermark */
2751 if (im->watermark[0] != '\0') {
2752 water_color = im->graph_col[GRC_FONT];
2753 water_color.alpha = 0.3;
2754 gfx_text(im,
2755 im->ximg / 2, im->yimg - 6,
2756 water_color,
2757 im->
2758 text_prop[TEXT_PROP_WATERMARK].
2759 font_desc, im->tabwidth, 0,
2760 GFX_H_CENTER, GFX_V_BOTTOM, im->watermark);
2761 }
2763 /* graph labels */
2764 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
2765 for (i = 0; i < im->gdes_c; i++) {
2766 if (im->gdes[i].legend[0] == '\0')
2767 continue;
2768 /* im->gdes[i].leg_y is the bottom of the legend */
2769 X0 = im->xOriginLegend + im->gdes[i].leg_x;
2770 Y0 = im->legenddirection == TOP_DOWN ? im->yOriginLegend + im->gdes[i].leg_y : im->yOriginLegend + im->legendheight - im->gdes[i].leg_y;
2771 gfx_text(im, X0, Y0,
2772 im->graph_col[GRC_FONT],
2773 im->
2774 text_prop
2775 [TEXT_PROP_LEGEND].font_desc,
2776 im->tabwidth, 0.0,
2777 GFX_H_LEFT, GFX_V_BOTTOM, im->gdes[i].legend);
2778 /* The legend for GRAPH items starts with "M " to have
2779 enough space for the box */
2780 if (im->gdes[i].gf != GF_PRINT &&
2781 im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT) {
2782 double boxH, boxV;
2783 double X1, Y1;
2785 boxH = gfx_get_text_width(im, 0,
2786 im->
2787 text_prop
2788 [TEXT_PROP_LEGEND].
2789 font_desc,
2790 im->tabwidth, "o") * 1.2;
2791 boxV = boxH;
2792 /* shift the box up a bit */
2793 Y0 -= boxV * 0.4;
2795 if (im->dynamic_labels && im->gdes[i].gf == GF_HRULE) { /* [-] */
2796 cairo_save(im->cr);
2797 cairo_new_path(im->cr);
2798 cairo_set_line_width(im->cr, 1.0);
2799 gfx_line(im,
2800 X0, Y0 - boxV / 2,
2801 X0 + boxH, Y0 - boxV / 2,
2802 1.0, im->gdes[i].col);
2803 gfx_close_path(im);
2804 } else if (im->dynamic_labels && im->gdes[i].gf == GF_VRULE) { /* [|] */
2805 cairo_save(im->cr);
2806 cairo_new_path(im->cr);
2807 cairo_set_line_width(im->cr, 1.0);
2808 gfx_line(im,
2809 X0 + boxH / 2, Y0,
2810 X0 + boxH / 2, Y0 - boxV,
2811 1.0, im->gdes[i].col);
2812 gfx_close_path(im);
2813 } else if (im->dynamic_labels && im->gdes[i].gf == GF_LINE) { /* [/] */
2814 cairo_save(im->cr);
2815 cairo_new_path(im->cr);
2816 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
2817 gfx_line(im,
2818 X0, Y0,
2819 X0 + boxH, Y0 - boxV,
2820 im->gdes[i].linewidth, im->gdes[i].col);
2821 gfx_close_path(im);
2822 } else {
2823 /* make sure transparent colors show up the same way as in the graph */
2824 gfx_new_area(im,
2825 X0, Y0 - boxV,
2826 X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
2827 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2828 gfx_close_path(im);
2829 gfx_new_area(im, X0, Y0 - boxV, X0,
2830 Y0, X0 + boxH, Y0, im->gdes[i].col);
2831 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2832 gfx_close_path(im);
2833 cairo_save(im->cr);
2834 cairo_new_path(im->cr);
2835 cairo_set_line_width(im->cr, 1.0);
2836 X1 = X0 + boxH;
2837 Y1 = Y0 - boxV;
2838 gfx_line_fit(im, &X0, &Y0);
2839 gfx_line_fit(im, &X1, &Y1);
2840 cairo_move_to(im->cr, X0, Y0);
2841 cairo_line_to(im->cr, X1, Y0);
2842 cairo_line_to(im->cr, X1, Y1);
2843 cairo_line_to(im->cr, X0, Y1);
2844 cairo_close_path(im->cr);
2845 cairo_set_source_rgba(im->cr,
2846 im->graph_col[GRC_FRAME].red,
2847 im->graph_col[GRC_FRAME].green,
2848 im->graph_col[GRC_FRAME].blue,
2849 im->graph_col[GRC_FRAME].alpha);
2850 }
2851 if (im->gdes[i].dash) {
2852 /* make box borders in legend dashed if the graph is dashed */
2853 double dashes[] = {
2854 3.0
2855 };
2856 cairo_set_dash(im->cr, dashes, 1, 0.0);
2857 }
2858 cairo_stroke(im->cr);
2859 cairo_restore(im->cr);
2860 }
2861 }
2862 }
2863 }
2866 /*****************************************************
2867 * lazy check make sure we rely need to create this graph
2868 *****************************************************/
2870 int lazy_check(
2871 image_desc_t *im)
2872 {
2873 FILE *fd = NULL;
2874 int size = 1;
2875 struct stat imgstat;
2877 if (im->lazy == 0)
2878 return 0; /* no lazy option */
2879 if (strlen(im->graphfile) == 0)
2880 return 0; /* inmemory option */
2881 if (stat(im->graphfile, &imgstat) != 0)
2882 return 0; /* can't stat */
2883 /* one pixel in the existing graph is more then what we would
2884 change here ... */
2885 if (time(NULL) - imgstat.st_mtime > (im->end - im->start) / im->xsize)
2886 return 0;
2887 if ((fd = fopen(im->graphfile, "rb")) == NULL)
2888 return 0; /* the file does not exist */
2889 switch (im->imgformat) {
2890 case IF_PNG:
2891 size = PngSize(fd, &(im->ximg), &(im->yimg));
2892 break;
2893 default:
2894 size = 1;
2895 }
2896 fclose(fd);
2897 return size;
2898 }
2901 int graph_size_location(
2902 image_desc_t
2903 *im,
2904 int elements)
2905 {
2906 /* The actual size of the image to draw is determined from
2907 ** several sources. The size given on the command line is
2908 ** the graph area but we need more as we have to draw labels
2909 ** and other things outside the graph area. If the option
2910 ** --full-size-mode is selected the size defines the total
2911 ** image size and the size available for the graph is
2912 ** calculated.
2913 */
2915 /** +---+-----------------------------------+
2916 ** | y |...............graph title.........|
2917 ** | +---+-------------------------------+
2918 ** | a | y | |
2919 ** | x | | |
2920 ** | i | a | |
2921 ** | s | x | main graph area |
2922 ** | | i | |
2923 ** | t | s | |
2924 ** | i | | |
2925 ** | t | l | |
2926 ** | l | b +-------------------------------+
2927 ** | e | l | x axis labels |
2928 ** +---+---+-------------------------------+
2929 ** |....................legends............|
2930 ** +---------------------------------------+
2931 ** | watermark |
2932 ** +---------------------------------------+
2933 */
2935 int Xvertical = 0, Xvertical2 = 0, Ytitle =
2936 0, Xylabel = 0, Xmain = 0, Ymain =
2937 0, Yxlabel = 0, Xspacing = 15, Yspacing = 15, Ywatermark = 4;
2939 // no legends and no the shall be plotted it's easy
2940 if (im->extra_flags & ONLY_GRAPH) {
2941 im->xorigin = 0;
2942 im->ximg = im->xsize;
2943 im->yimg = im->ysize;
2944 im->yorigin = im->ysize;
2945 xtr(im, 0);
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 }