1 /****************************************************************************
2 * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
3 ****************************************************************************
4 * rrd__graph.c make creates ne rrds
5 ****************************************************************************/
7 #if 0
8 #include "rrd_tool.h"
9 #endif
11 #include <sys/stat.h>
12 #ifdef WIN32
13 #include <io.h>
14 #include <fcntl.h>
15 #endif
17 #include "rrd_graph.h"
18 #include "rrd_graph_helper.h"
20 /* some constant definitions */
23 #ifndef RRD_DEFAULT_FONT
24 #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf"
25 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
26 #endif
29 text_prop_t text_prop[] = {
30 { 10.0, RRD_DEFAULT_FONT }, /* default */
31 { 12.0, RRD_DEFAULT_FONT }, /* title */
32 { 8.0, RRD_DEFAULT_FONT }, /* axis */
33 { 10.0, RRD_DEFAULT_FONT }, /* unit */
34 { 10.0, RRD_DEFAULT_FONT } /* legend */
35 };
37 xlab_t xlab[] = {
38 {0, TMT_SECOND,30, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
39 {2, TMT_MINUTE,1, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
40 {5, TMT_MINUTE,2, TMT_MINUTE,10, TMT_MINUTE,10, 0,"%H:%M"},
41 {10, TMT_MINUTE,5, TMT_MINUTE,20, TMT_MINUTE,20, 0,"%H:%M"},
42 {30, TMT_MINUTE,10, TMT_HOUR,1, TMT_HOUR,1, 0,"%H:%M"},
43 {60, TMT_MINUTE,30, TMT_HOUR,2, TMT_HOUR,2, 0,"%H:%M"},
44 {180, TMT_HOUR,1, TMT_HOUR,6, TMT_HOUR,6, 0,"%H:%M"},
45 /*{300, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly*/
46 {600, TMT_HOUR,6, TMT_DAY,1, TMT_DAY,1, 24*3600,"%a"},
47 {1800, TMT_HOUR,12, TMT_DAY,1, TMT_DAY,2, 24*3600,"%a"},
48 {3600, TMT_DAY,1, TMT_WEEK,1, TMT_WEEK,1, 7*24*3600,"Week %V"},
49 {3*3600, TMT_WEEK,1, TMT_MONTH,1, TMT_WEEK,2, 7*24*3600,"Week %V"},
50 {6*3600, TMT_MONTH,1, TMT_MONTH,1, TMT_MONTH,1, 30*24*3600,"%b"},
51 {48*3600, TMT_MONTH,1, TMT_MONTH,3, TMT_MONTH,3, 30*24*3600,"%b"},
52 {10*24*3600, TMT_YEAR,1, TMT_YEAR,1, TMT_YEAR,1, 365*24*3600,"%y"},
53 {-1,TMT_MONTH,0,TMT_MONTH,0,TMT_MONTH,0,0,""}
54 };
56 /* sensible logarithmic y label intervals ...
57 the first element of each row defines the possible starting points on the
58 y axis ... the other specify the */
60 double yloglab[][12]= {{ 1e9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
61 { 1e3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
62 { 1e1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
63 /* { 1e1, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, */
64 { 1e1, 1, 2.5, 5, 7.5, 0, 0, 0, 0, 0, 0, 0 },
65 { 1e1, 1, 2, 4, 6, 8, 0, 0, 0, 0, 0, 0 },
66 { 1e1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 },
67 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }};
69 /* sensible y label intervals ...*/
71 ylab_t ylab[]= {
72 {0.1, {1,2, 5,10}},
73 {0.2, {1,5,10,20}},
74 {0.5, {1,2, 4,10}},
75 {1.0, {1,2, 5,10}},
76 {2.0, {1,5,10,20}},
77 {5.0, {1,2, 4,10}},
78 {10.0, {1,2, 5,10}},
79 {20.0, {1,5,10,20}},
80 {50.0, {1,2, 4,10}},
81 {100.0, {1,2, 5,10}},
82 {200.0, {1,5,10,20}},
83 {500.0, {1,2, 4,10}},
84 {0.0, {0,0,0,0}}};
87 gfx_color_t graph_col[] = /* default colors */
88 { 0xFFFFFFFF, /* canvas */
89 0xF0F0F0FF, /* background */
90 0xD0D0D0FF, /* shade A */
91 0xA0A0A0FF, /* shade B */
92 0x909090FF, /* grid */
93 0xE05050FF, /* major grid */
94 0x000000FF, /* font */
95 0x000000FF, /* frame */
96 0xFF0000FF /* arrow */
97 };
100 /* #define DEBUG */
102 #ifdef DEBUG
103 # define DPRINT(x) (void)(printf x, printf("\n"))
104 #else
105 # define DPRINT(x)
106 #endif
109 /* initialize with xtr(im,0); */
110 int
111 xtr(image_desc_t *im,time_t mytime){
112 static double pixie;
113 if (mytime==0){
114 pixie = (double) im->xsize / (double)(im->end - im->start);
115 return im->xorigin;
116 }
117 return (int)((double)im->xorigin
118 + pixie * ( mytime - im->start ) );
119 }
121 /* translate data values into y coordinates */
122 int
123 ytr(image_desc_t *im, double value){
124 static double pixie;
125 double yval;
126 if (isnan(value)){
127 if(!im->logarithmic)
128 pixie = (double) im->ysize / (im->maxval - im->minval);
129 else
130 pixie = (double) im->ysize / (log10(im->maxval) - log10(im->minval));
131 yval = im->yorigin;
132 } else if(!im->logarithmic) {
133 yval = im->yorigin - pixie * (value - im->minval) + 0.5;
134 } else {
135 if (value < im->minval) {
136 yval = im->yorigin;
137 } else {
138 yval = im->yorigin - pixie * (log10(value) - log10(im->minval)) + 0.5;
139 }
140 }
141 /* make sure we don't return anything too unreasonable. GD lib can
142 get terribly slow when drawing lines outside its scope. This is
143 especially problematic in connection with the rigid option */
144 if (! im->rigid) {
145 return (int)yval;
146 } else if ((int)yval > im->yorigin) {
147 return im->yorigin+2;
148 } else if ((int) yval < im->yorigin - im->ysize){
149 return im->yorigin - im->ysize - 2;
150 } else {
151 return (int)yval;
152 }
153 }
157 /* conversion function for symbolic entry names */
160 #define conv_if(VV,VVV) \
161 if (strcmp(#VV, string) == 0) return VVV ;
163 enum gf_en gf_conv(char *string){
165 conv_if(PRINT,GF_PRINT)
166 conv_if(GPRINT,GF_GPRINT)
167 conv_if(COMMENT,GF_COMMENT)
168 conv_if(HRULE,GF_HRULE)
169 conv_if(VRULE,GF_VRULE)
170 conv_if(LINE,GF_LINE)
171 conv_if(AREA,GF_AREA)
172 conv_if(STACK,GF_STACK)
173 conv_if(TICK,GF_TICK)
174 conv_if(DEF,GF_DEF)
175 conv_if(CDEF,GF_CDEF)
176 conv_if(VDEF,GF_VDEF)
177 conv_if(PART,GF_PART)
179 return (-1);
180 }
182 enum if_en if_conv(char *string){
184 conv_if(GIF,IF_GIF)
185 conv_if(PNG,IF_PNG)
187 return (-1);
188 }
190 enum tmt_en tmt_conv(char *string){
192 conv_if(SECOND,TMT_SECOND)
193 conv_if(MINUTE,TMT_MINUTE)
194 conv_if(HOUR,TMT_HOUR)
195 conv_if(DAY,TMT_DAY)
196 conv_if(WEEK,TMT_WEEK)
197 conv_if(MONTH,TMT_MONTH)
198 conv_if(YEAR,TMT_YEAR)
199 return (-1);
200 }
202 enum grc_en grc_conv(char *string){
204 conv_if(BACK,GRC_BACK)
205 conv_if(CANVAS,GRC_CANVAS)
206 conv_if(SHADEA,GRC_SHADEA)
207 conv_if(SHADEB,GRC_SHADEB)
208 conv_if(GRID,GRC_GRID)
209 conv_if(MGRID,GRC_MGRID)
210 conv_if(FONT,GRC_FONT)
211 conv_if(FRAME,GRC_FRAME)
212 conv_if(ARROW,GRC_ARROW)
214 return -1;
215 }
217 enum text_prop_en text_prop_conv(char *string){
219 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
220 conv_if(TITLE,TEXT_PROP_TITLE)
221 conv_if(AXIS,TEXT_PROP_AXIS)
222 conv_if(UNIT,TEXT_PROP_UNIT)
223 conv_if(LEGEND,TEXT_PROP_LEGEND)
224 return -1;
225 }
228 #undef conv_if
232 int
233 im_free(image_desc_t *im)
234 {
235 long i,ii;
236 if (im == NULL) return 0;
237 for(i=0;i<im->gdes_c;i++){
238 if (im->gdes[i].data_first){
239 /* careful here, because a single pointer can occur several times */
240 free (im->gdes[i].data);
241 if (im->gdes[i].ds_namv){
242 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
243 free(im->gdes[i].ds_namv[ii]);
244 free(im->gdes[i].ds_namv);
245 }
246 }
247 free (im->gdes[i].p_data);
248 free (im->gdes[i].rpnp);
249 }
250 free(im->gdes);
251 return 0;
252 }
254 /* find SI magnitude symbol for the given number*/
255 void
256 auto_scale(
257 image_desc_t *im, /* image description */
258 double *value,
259 char **symb_ptr,
260 double *magfact
261 )
262 {
264 char *symbol[] = {"a", /* 10e-18 Atto */
265 "f", /* 10e-15 Femto */
266 "p", /* 10e-12 Pico */
267 "n", /* 10e-9 Nano */
268 "u", /* 10e-6 Micro */
269 "m", /* 10e-3 Milli */
270 " ", /* Base */
271 "k", /* 10e3 Kilo */
272 "M", /* 10e6 Mega */
273 "G", /* 10e9 Giga */
274 "T", /* 10e12 Tera */
275 "P", /* 10e15 Peta */
276 "E"};/* 10e18 Exa */
278 int symbcenter = 6;
279 int sindex;
281 if (*value == 0.0 || isnan(*value) ) {
282 sindex = 0;
283 *magfact = 1.0;
284 } else {
285 sindex = floor(log(fabs(*value))/log((double)im->base));
286 *magfact = pow((double)im->base, (double)sindex);
287 (*value) /= (*magfact);
288 }
289 if ( sindex <= symbcenter && sindex >= -symbcenter) {
290 (*symb_ptr) = symbol[sindex+symbcenter];
291 }
292 else {
293 (*symb_ptr) = "?";
294 }
295 }
298 /* find SI magnitude symbol for the numbers on the y-axis*/
299 void
300 si_unit(
301 image_desc_t *im /* image description */
302 )
303 {
305 char symbol[] = {'a', /* 10e-18 Atto */
306 'f', /* 10e-15 Femto */
307 'p', /* 10e-12 Pico */
308 'n', /* 10e-9 Nano */
309 'u', /* 10e-6 Micro */
310 'm', /* 10e-3 Milli */
311 ' ', /* Base */
312 'k', /* 10e3 Kilo */
313 'M', /* 10e6 Mega */
314 'G', /* 10e9 Giga */
315 'T', /* 10e12 Tera */
316 'P', /* 10e15 Peta */
317 'E'};/* 10e18 Exa */
319 int symbcenter = 6;
320 double digits;
322 if (im->unitsexponent != 9999) {
323 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
324 digits = floor(im->unitsexponent / 3);
325 } else {
326 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
327 }
328 im->magfact = pow((double)im->base , digits);
330 #ifdef DEBUG
331 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
332 #endif
334 if ( ((digits+symbcenter) < sizeof(symbol)) &&
335 ((digits+symbcenter) >= 0) )
336 im->symbol = symbol[(int)digits+symbcenter];
337 else
338 im->symbol = ' ';
339 }
341 /* move min and max values around to become sensible */
343 void
344 expand_range(image_desc_t *im)
345 {
346 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
347 600.0,500.0,400.0,300.0,250.0,
348 200.0,125.0,100.0,90.0,80.0,
349 75.0,70.0,60.0,50.0,40.0,30.0,
350 25.0,20.0,10.0,9.0,8.0,
351 7.0,6.0,5.0,4.0,3.5,3.0,
352 2.5,2.0,1.8,1.5,1.2,1.0,
353 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
355 double scaled_min,scaled_max;
356 double adj;
357 int i;
361 #ifdef DEBUG
362 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
363 im->minval,im->maxval,im->magfact);
364 #endif
366 if (isnan(im->ygridstep)){
367 if(im->extra_flags & ALTAUTOSCALE) {
368 /* measure the amplitude of the function. Make sure that
369 graph boundaries are slightly higher then max/min vals
370 so we can see amplitude on the graph */
371 double delt, fact;
373 delt = im->maxval - im->minval;
374 adj = delt * 0.1;
375 fact = 2.0 * pow(10.0,
376 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
377 if (delt < fact) {
378 adj = (fact - delt) * 0.55;
379 #ifdef DEBUG
380 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
381 #endif
382 }
383 im->minval -= adj;
384 im->maxval += adj;
385 }
386 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
387 /* measure the amplitude of the function. Make sure that
388 graph boundaries are slightly higher than max vals
389 so we can see amplitude on the graph */
390 adj = (im->maxval - im->minval) * 0.1;
391 im->maxval += adj;
392 }
393 else {
394 scaled_min = im->minval / im->magfact;
395 scaled_max = im->maxval / im->magfact;
397 for (i=1; sensiblevalues[i] > 0; i++){
398 if (sensiblevalues[i-1]>=scaled_min &&
399 sensiblevalues[i]<=scaled_min)
400 im->minval = sensiblevalues[i]*(im->magfact);
402 if (-sensiblevalues[i-1]<=scaled_min &&
403 -sensiblevalues[i]>=scaled_min)
404 im->minval = -sensiblevalues[i-1]*(im->magfact);
406 if (sensiblevalues[i-1] >= scaled_max &&
407 sensiblevalues[i] <= scaled_max)
408 im->maxval = sensiblevalues[i-1]*(im->magfact);
410 if (-sensiblevalues[i-1]<=scaled_max &&
411 -sensiblevalues[i] >=scaled_max)
412 im->maxval = -sensiblevalues[i]*(im->magfact);
413 }
414 }
415 } else {
416 /* adjust min and max to the grid definition if there is one */
417 im->minval = (double)im->ylabfact * im->ygridstep *
418 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
419 im->maxval = (double)im->ylabfact * im->ygridstep *
420 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
421 }
423 #ifdef DEBUG
424 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
425 im->minval,im->maxval,im->magfact);
426 #endif
427 }
430 /* reduce data reimplementation by Alex */
432 void
433 reduce_data(
434 enum cf_en cf, /* which consolidation function ?*/
435 unsigned long cur_step, /* step the data currently is in */
436 time_t *start, /* start, end and step as requested ... */
437 time_t *end, /* ... by the application will be ... */
438 unsigned long *step, /* ... adjusted to represent reality */
439 unsigned long *ds_cnt, /* number of data sources in file */
440 rrd_value_t **data) /* two dimensional array containing the data */
441 {
442 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
443 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
444 rrd_value_t *srcptr,*dstptr;
446 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
447 dstptr = *data;
448 srcptr = *data;
449 row_cnt = ((*end)-(*start))/cur_step;
451 #ifdef DEBUG
452 #define DEBUG_REDUCE
453 #endif
454 #ifdef DEBUG_REDUCE
455 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
456 row_cnt,reduce_factor,*start,*end,cur_step);
457 for (col=0;col<row_cnt;col++) {
458 printf("time %10lu: ",*start+(col+1)*cur_step);
459 for (i=0;i<*ds_cnt;i++)
460 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
461 printf("\n");
462 }
463 #endif
465 /* We have to combine [reduce_factor] rows of the source
466 ** into one row for the destination. Doing this we also
467 ** need to take care to combine the correct rows. First
468 ** alter the start and end time so that they are multiples
469 ** of the new step time. We cannot reduce the amount of
470 ** time so we have to move the end towards the future and
471 ** the start towards the past.
472 */
473 end_offset = (*end) % (*step);
474 start_offset = (*start) % (*step);
476 /* If there is a start offset (which cannot be more than
477 ** one destination row), skip the appropriate number of
478 ** source rows and one destination row. The appropriate
479 ** number is what we do know (start_offset/cur_step) of
480 ** the new interval (*step/cur_step aka reduce_factor).
481 */
482 #ifdef DEBUG_REDUCE
483 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
484 printf("row_cnt before: %lu\n",row_cnt);
485 #endif
486 if (start_offset) {
487 (*start) = (*start)-start_offset;
488 skiprows=reduce_factor-start_offset/cur_step;
489 srcptr+=skiprows* *ds_cnt;
490 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
491 row_cnt-=skiprows;
492 }
493 #ifdef DEBUG_REDUCE
494 printf("row_cnt between: %lu\n",row_cnt);
495 #endif
497 /* At the end we have some rows that are not going to be
498 ** used, the amount is end_offset/cur_step
499 */
500 if (end_offset) {
501 (*end) = (*end)-end_offset+(*step);
502 skiprows = end_offset/cur_step;
503 row_cnt-=skiprows;
504 }
505 #ifdef DEBUG_REDUCE
506 printf("row_cnt after: %lu\n",row_cnt);
507 #endif
509 /* Sanity check: row_cnt should be multiple of reduce_factor */
510 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
512 if (row_cnt%reduce_factor) {
513 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
514 row_cnt,reduce_factor);
515 printf("BUG in reduce_data()\n");
516 exit(1);
517 }
519 /* Now combine reduce_factor intervals at a time
520 ** into one interval for the destination.
521 */
523 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
524 for (col=0;col<(*ds_cnt);col++) {
525 rrd_value_t newval=DNAN;
526 unsigned long validval=0;
528 for (i=0;i<reduce_factor;i++) {
529 if (isnan(srcptr[i*(*ds_cnt)+col])) {
530 continue;
531 }
532 validval++;
533 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
534 else {
535 switch (cf) {
536 case CF_HWPREDICT:
537 case CF_DEVSEASONAL:
538 case CF_DEVPREDICT:
539 case CF_SEASONAL:
540 case CF_AVERAGE:
541 newval += srcptr[i*(*ds_cnt)+col];
542 break;
543 case CF_MINIMUM:
544 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
545 break;
546 case CF_FAILURES:
547 /* an interval contains a failure if any subintervals contained a failure */
548 case CF_MAXIMUM:
549 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
550 break;
551 case CF_LAST:
552 newval = srcptr[i*(*ds_cnt)+col];
553 break;
554 }
555 }
556 }
557 if (validval == 0){newval = DNAN;} else{
558 switch (cf) {
559 case CF_HWPREDICT:
560 case CF_DEVSEASONAL:
561 case CF_DEVPREDICT:
562 case CF_SEASONAL:
563 case CF_AVERAGE:
564 newval /= validval;
565 break;
566 case CF_MINIMUM:
567 case CF_FAILURES:
568 case CF_MAXIMUM:
569 case CF_LAST:
570 break;
571 }
572 }
573 *dstptr++=newval;
574 }
575 srcptr+=(*ds_cnt)*reduce_factor;
576 row_cnt-=reduce_factor;
577 }
578 /* If we had to alter the endtime, we didn't have enough
579 ** source rows to fill the last row. Fill it with NaN.
580 */
581 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
582 #ifdef DEBUG_REDUCE
583 row_cnt = ((*end)-(*start))/ *step;
584 srcptr = *data;
585 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
586 row_cnt,*start,*end,*step);
587 for (col=0;col<row_cnt;col++) {
588 printf("time %10lu: ",*start+(col+1)*(*step));
589 for (i=0;i<*ds_cnt;i++)
590 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
591 printf("\n");
592 }
593 #endif
594 }
597 /* get the data required for the graphs from the
598 relevant rrds ... */
600 int
601 data_fetch( image_desc_t *im )
602 {
603 int i,ii;
604 int skip;
605 /* pull the data from the log files ... */
606 for (i=0;i<im->gdes_c;i++){
607 /* only GF_DEF elements fetch data */
608 if (im->gdes[i].gf != GF_DEF)
609 continue;
611 skip=0;
612 /* do we have it already ?*/
613 for (ii=0;ii<i;ii++){
614 if (im->gdes[ii].gf != GF_DEF)
615 continue;
616 if((strcmp(im->gdes[i].rrd,im->gdes[ii].rrd) == 0)
617 && (im->gdes[i].cf == im->gdes[ii].cf)){
618 /* OK the data it is here already ...
619 * we just copy the header portion */
620 im->gdes[i].start = im->gdes[ii].start;
621 im->gdes[i].end = im->gdes[ii].end;
622 im->gdes[i].step = im->gdes[ii].step;
623 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
624 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
625 im->gdes[i].data = im->gdes[ii].data;
626 im->gdes[i].data_first = 0;
627 skip=1;
628 }
629 if (skip)
630 break;
631 }
632 if (! skip) {
633 unsigned long ft_step = im->gdes[i].step ;
635 if((rrd_fetch_fn(im->gdes[i].rrd,
636 im->gdes[i].cf,
637 &im->gdes[i].start,
638 &im->gdes[i].end,
639 &ft_step,
640 &im->gdes[i].ds_cnt,
641 &im->gdes[i].ds_namv,
642 &im->gdes[i].data)) == -1){
643 return -1;
644 }
645 im->gdes[i].data_first = 1;
647 if (ft_step < im->gdes[i].step) {
648 reduce_data(im->gdes[i].cf,
649 ft_step,
650 &im->gdes[i].start,
651 &im->gdes[i].end,
652 &im->gdes[i].step,
653 &im->gdes[i].ds_cnt,
654 &im->gdes[i].data);
655 } else {
656 im->gdes[i].step = ft_step;
657 }
658 }
660 /* lets see if the required data source is realy there */
661 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
662 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
663 im->gdes[i].ds=ii; }
664 }
665 if (im->gdes[i].ds== -1){
666 rrd_set_error("No DS called '%s' in '%s'",
667 im->gdes[i].ds_nam,im->gdes[i].rrd);
668 return -1;
669 }
671 }
672 return 0;
673 }
675 /* evaluate the expressions in the CDEF functions */
677 /*************************************************************
678 * CDEF stuff
679 *************************************************************/
681 long
682 find_var_wrapper(void *arg1, char *key)
683 {
684 return find_var((image_desc_t *) arg1, key);
685 }
687 /* find gdes containing var*/
688 long
689 find_var(image_desc_t *im, char *key){
690 long ii;
691 for(ii=0;ii<im->gdes_c-1;ii++){
692 if((im->gdes[ii].gf == GF_DEF
693 || im->gdes[ii].gf == GF_VDEF
694 || im->gdes[ii].gf == GF_CDEF)
695 && (strcmp(im->gdes[ii].vname,key) == 0)){
696 return ii;
697 }
698 }
699 return -1;
700 }
702 /* find the largest common denominator for all the numbers
703 in the 0 terminated num array */
704 long
705 lcd(long *num){
706 long rest;
707 int i;
708 for (i=0;num[i+1]!=0;i++){
709 do {
710 rest=num[i] % num[i+1];
711 num[i]=num[i+1]; num[i+1]=rest;
712 } while (rest!=0);
713 num[i+1] = num[i];
714 }
715 /* return i==0?num[i]:num[i-1]; */
716 return num[i];
717 }
719 /* run the rpn calculator on all the VDEF and CDEF arguments */
720 int
721 data_calc( image_desc_t *im){
723 int gdi;
724 int dataidx;
725 long *steparray, rpi;
726 int stepcnt;
727 time_t now;
728 rpnstack_t rpnstack;
730 rpnstack_init(&rpnstack);
732 for (gdi=0;gdi<im->gdes_c;gdi++){
733 /* Look for GF_VDEF and GF_CDEF in the same loop,
734 * so CDEFs can use VDEFs and vice versa
735 */
736 switch (im->gdes[gdi].gf) {
737 case GF_VDEF:
738 /* A VDEF has no DS. This also signals other parts
739 * of rrdtool that this is a VDEF value, not a CDEF.
740 */
741 im->gdes[gdi].ds_cnt = 0;
742 if (vdef_calc(im,gdi)) {
743 rrd_set_error("Error processing VDEF '%s'"
744 ,im->gdes[gdi].vname
745 );
746 rpnstack_free(&rpnstack);
747 return -1;
748 }
749 break;
750 case GF_CDEF:
751 im->gdes[gdi].ds_cnt = 1;
752 im->gdes[gdi].ds = 0;
753 im->gdes[gdi].data_first = 1;
754 im->gdes[gdi].start = 0;
755 im->gdes[gdi].end = 0;
756 steparray=NULL;
757 stepcnt = 0;
758 dataidx=-1;
760 /* Find the variables in the expression.
761 * - VDEF variables are substituted by their values
762 * and the opcode is changed into OP_NUMBER.
763 * - CDEF variables are analized for their step size,
764 * the lowest common denominator of all the step
765 * sizes of the data sources involved is calculated
766 * and the resulting number is the step size for the
767 * resulting data source.
768 */
769 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
770 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
771 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
772 if (im->gdes[ptr].ds_cnt == 0) {
773 #if 0
774 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
775 im->gdes[gdi].vname,
776 im->gdes[ptr].vname);
777 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
778 #endif
779 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
780 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
781 } else {
782 if ((steparray = rrd_realloc(steparray, (++stepcnt+1)*sizeof(*steparray)))==NULL){
783 rrd_set_error("realloc steparray");
784 rpnstack_free(&rpnstack);
785 return -1;
786 };
788 steparray[stepcnt-1] = im->gdes[ptr].step;
790 /* adjust start and end of cdef (gdi) so
791 * that it runs from the latest start point
792 * to the earliest endpoint of any of the
793 * rras involved (ptr)
794 */
795 if(im->gdes[gdi].start < im->gdes[ptr].start)
796 im->gdes[gdi].start = im->gdes[ptr].start;
798 if(im->gdes[gdi].end == 0 ||
799 im->gdes[gdi].end > im->gdes[ptr].end)
800 im->gdes[gdi].end = im->gdes[ptr].end;
802 /* store pointer to the first element of
803 * the rra providing data for variable,
804 * further save step size and data source
805 * count of this rra
806 */
807 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
808 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
809 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
811 /* backoff the *.data ptr; this is done so
812 * rpncalc() function doesn't have to treat
813 * the first case differently
814 */
815 } /* if ds_cnt != 0 */
816 } /* if OP_VARIABLE */
817 } /* loop through all rpi */
819 if(steparray == NULL){
820 rrd_set_error("rpn expressions without DEF"
821 " or CDEF variables are not supported");
822 rpnstack_free(&rpnstack);
823 return -1;
824 }
825 steparray[stepcnt]=0;
826 /* Now find the resulting step. All steps in all
827 * used RRAs have to be visited
828 */
829 im->gdes[gdi].step = lcd(steparray);
830 free(steparray);
831 if((im->gdes[gdi].data = malloc((
832 (im->gdes[gdi].end-im->gdes[gdi].start)
833 / im->gdes[gdi].step)
834 * sizeof(double)))==NULL){
835 rrd_set_error("malloc im->gdes[gdi].data");
836 rpnstack_free(&rpnstack);
837 return -1;
838 }
840 /* Step through the new cdef results array and
841 * calculate the values
842 */
843 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
844 now<=im->gdes[gdi].end;
845 now += im->gdes[gdi].step)
846 {
847 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
849 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
850 * in this case we are advancing by timesteps;
851 * we use the fact that time_t is a synonym for long
852 */
853 if (rpn_calc(rpnp,&rpnstack,(long) now,
854 im->gdes[gdi].data,++dataidx) == -1) {
855 /* rpn_calc sets the error string */
856 rpnstack_free(&rpnstack);
857 return -1;
858 }
859 } /* enumerate over time steps within a CDEF */
860 break;
861 default:
862 continue;
863 }
864 } /* enumerate over CDEFs */
865 rpnstack_free(&rpnstack);
866 return 0;
867 }
869 /* massage data so, that we get one value for each x coordinate in the graph */
870 int
871 data_proc( image_desc_t *im ){
872 long i,ii;
873 double pixstep = (double)(im->end-im->start)
874 /(double)im->xsize; /* how much time
875 passes in one pixel */
876 double paintval;
877 double minval=DNAN,maxval=DNAN;
879 unsigned long gr_time;
881 /* memory for the processed data */
882 for(i=0;i<im->gdes_c;i++){
883 if((im->gdes[i].gf==GF_LINE) ||
884 (im->gdes[i].gf==GF_AREA) ||
885 (im->gdes[i].gf==GF_TICK) ||
886 (im->gdes[i].gf==GF_STACK)){
887 if((im->gdes[i].p_data = malloc((im->xsize +1)
888 * sizeof(rrd_value_t)))==NULL){
889 rrd_set_error("malloc data_proc");
890 return -1;
891 }
892 }
893 }
895 for(i=0;i<im->xsize;i++){
896 long vidx;
897 gr_time = im->start+pixstep*i; /* time of the
898 current step */
899 paintval=0.0;
901 for(ii=0;ii<im->gdes_c;ii++){
902 double value;
903 switch(im->gdes[ii].gf){
904 case GF_LINE:
905 case GF_AREA:
906 case GF_TICK:
907 paintval = 0.0;
908 case GF_STACK:
909 vidx = im->gdes[ii].vidx;
911 value =
912 im->gdes[vidx].data[
913 ((unsigned long)floor(
914 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
915 )
916 ) *im->gdes[vidx].ds_cnt
917 +im->gdes[vidx].ds];
919 if (! isnan(value)) {
920 paintval += value;
921 im->gdes[ii].p_data[i] = paintval;
922 /* GF_TICK: the data values are not relevant for min and max */
923 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
924 if (isnan(minval) || paintval < minval)
925 minval = paintval;
926 if (isnan(maxval) || paintval > maxval)
927 maxval = paintval;
928 }
929 } else {
930 im->gdes[ii].p_data[i] = DNAN;
931 }
932 break;
933 case GF_PRINT:
934 case GF_GPRINT:
935 case GF_COMMENT:
936 case GF_HRULE:
937 case GF_VRULE:
938 case GF_DEF:
939 case GF_CDEF:
940 case GF_VDEF:
941 case GF_PART:
942 break;
943 }
944 }
945 }
947 /* if min or max have not been asigned a value this is because
948 there was no data in the graph ... this is not good ...
949 lets set these to dummy values then ... */
951 if (isnan(minval)) minval = 0.0;
952 if (isnan(maxval)) maxval = 1.0;
954 /* adjust min and max values */
955 if (isnan(im->minval)
956 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
957 && im->minval > minval))
958 im->minval = minval;
959 if (isnan(im->maxval)
960 || (!im->rigid
961 && im->maxval < maxval)){
962 if (im->logarithmic)
963 im->maxval = maxval * 1.1;
964 else
965 im->maxval = maxval;
966 }
967 /* make sure min and max are not equal */
968 if (im->minval == im->maxval) {
969 im->maxval *= 1.01;
970 if (! im->logarithmic) {
971 im->minval *= 0.99;
972 }
974 /* make sure min and max are not both zero */
975 if (im->maxval == 0.0) {
976 im->maxval = 1.0;
977 }
979 }
980 return 0;
981 }
985 /* identify the point where the first gridline, label ... gets placed */
987 time_t
988 find_first_time(
989 time_t start, /* what is the initial time */
990 enum tmt_en baseint, /* what is the basic interval */
991 long basestep /* how many if these do we jump a time */
992 )
993 {
994 struct tm tm;
995 tm = *localtime(&start);
996 switch(baseint){
997 case TMT_SECOND:
998 tm.tm_sec -= tm.tm_sec % basestep; break;
999 case TMT_MINUTE:
1000 tm.tm_sec=0;
1001 tm.tm_min -= tm.tm_min % basestep;
1002 break;
1003 case TMT_HOUR:
1004 tm.tm_sec=0;
1005 tm.tm_min = 0;
1006 tm.tm_hour -= tm.tm_hour % basestep; break;
1007 case TMT_DAY:
1008 /* we do NOT look at the basestep for this ... */
1009 tm.tm_sec=0;
1010 tm.tm_min = 0;
1011 tm.tm_hour = 0; break;
1012 case TMT_WEEK:
1013 /* we do NOT look at the basestep for this ... */
1014 tm.tm_sec=0;
1015 tm.tm_min = 0;
1016 tm.tm_hour = 0;
1017 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1018 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1019 break;
1020 case TMT_MONTH:
1021 tm.tm_sec=0;
1022 tm.tm_min = 0;
1023 tm.tm_hour = 0;
1024 tm.tm_mday = 1;
1025 tm.tm_mon -= tm.tm_mon % basestep; break;
1027 case TMT_YEAR:
1028 tm.tm_sec=0;
1029 tm.tm_min = 0;
1030 tm.tm_hour = 0;
1031 tm.tm_mday = 1;
1032 tm.tm_mon = 0;
1033 tm.tm_year -= (tm.tm_year+1900) % basestep;
1035 }
1036 return mktime(&tm);
1037 }
1038 /* identify the point where the next gridline, label ... gets placed */
1039 time_t
1040 find_next_time(
1041 time_t current, /* what is the initial time */
1042 enum tmt_en baseint, /* what is the basic interval */
1043 long basestep /* how many if these do we jump a time */
1044 )
1045 {
1046 struct tm tm;
1047 time_t madetime;
1048 tm = *localtime(¤t);
1049 do {
1050 switch(baseint){
1051 case TMT_SECOND:
1052 tm.tm_sec += basestep; break;
1053 case TMT_MINUTE:
1054 tm.tm_min += basestep; break;
1055 case TMT_HOUR:
1056 tm.tm_hour += basestep; break;
1057 case TMT_DAY:
1058 tm.tm_mday += basestep; break;
1059 case TMT_WEEK:
1060 tm.tm_mday += 7*basestep; break;
1061 case TMT_MONTH:
1062 tm.tm_mon += basestep; break;
1063 case TMT_YEAR:
1064 tm.tm_year += basestep;
1065 }
1066 madetime = mktime(&tm);
1067 } while (madetime == -1); /* this is necessary to skip impssible times
1068 like the daylight saving time skips */
1069 return madetime;
1071 }
1074 /* calculate values required for PRINT and GPRINT functions */
1076 int
1077 print_calc(image_desc_t *im, char ***prdata)
1078 {
1079 long i,ii,validsteps;
1080 double printval;
1081 time_t printtime;
1082 int graphelement = 0;
1083 long vidx;
1084 int max_ii;
1085 double magfact = -1;
1086 char *si_symb = "";
1087 char *percent_s;
1088 int prlines = 1;
1089 if (im->imginfo) prlines++;
1090 for(i=0;i<im->gdes_c;i++){
1091 switch(im->gdes[i].gf){
1092 case GF_PRINT:
1093 prlines++;
1094 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1095 rrd_set_error("realloc prdata");
1096 return 0;
1097 }
1098 case GF_GPRINT:
1099 /* PRINT and GPRINT can now print VDEF generated values.
1100 * There's no need to do any calculations on them as these
1101 * calculations were already made.
1102 */
1103 vidx = im->gdes[i].vidx;
1104 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1105 printval = im->gdes[vidx].vf.val;
1106 printtime = im->gdes[vidx].vf.when;
1107 } else { /* need to calculate max,min,avg etcetera */
1108 max_ii =((im->gdes[vidx].end
1109 - im->gdes[vidx].start)
1110 / im->gdes[vidx].step
1111 * im->gdes[vidx].ds_cnt);
1112 printval = DNAN;
1113 validsteps = 0;
1114 for( ii=im->gdes[vidx].ds;
1115 ii < max_ii;
1116 ii+=im->gdes[vidx].ds_cnt){
1117 if (! finite(im->gdes[vidx].data[ii]))
1118 continue;
1119 if (isnan(printval)){
1120 printval = im->gdes[vidx].data[ii];
1121 validsteps++;
1122 continue;
1123 }
1125 switch (im->gdes[i].cf){
1126 case CF_HWPREDICT:
1127 case CF_DEVPREDICT:
1128 case CF_DEVSEASONAL:
1129 case CF_SEASONAL:
1130 case CF_AVERAGE:
1131 validsteps++;
1132 printval += im->gdes[vidx].data[ii];
1133 break;
1134 case CF_MINIMUM:
1135 printval = min( printval, im->gdes[vidx].data[ii]);
1136 break;
1137 case CF_FAILURES:
1138 case CF_MAXIMUM:
1139 printval = max( printval, im->gdes[vidx].data[ii]);
1140 break;
1141 case CF_LAST:
1142 printval = im->gdes[vidx].data[ii];
1143 }
1144 }
1145 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1146 if (validsteps > 1) {
1147 printval = (printval / validsteps);
1148 }
1149 }
1150 } /* prepare printval */
1152 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1153 if (im->gdes[i].gf == GF_PRINT){
1154 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1155 sprintf((*prdata)[prlines-2],"%s (%lu)",
1156 ctime(&printtime),printtime);
1157 (*prdata)[prlines-1] = NULL;
1158 } else {
1159 sprintf(im->gdes[i].legend,"%s (%lu)",
1160 ctime(&printtime),printtime);
1161 graphelement = 1;
1162 }
1163 } else {
1164 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1165 /* Magfact is set to -1 upon entry to print_calc. If it
1166 * is still less than 0, then we need to run auto_scale.
1167 * Otherwise, put the value into the correct units. If
1168 * the value is 0, then do not set the symbol or magnification
1169 * so next the calculation will be performed again. */
1170 if (magfact < 0.0) {
1171 auto_scale(im,&printval,&si_symb,&magfact);
1172 if (printval == 0.0)
1173 magfact = -1.0;
1174 } else {
1175 printval /= magfact;
1176 }
1177 *(++percent_s) = 's';
1178 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1179 auto_scale(im,&printval,&si_symb,&magfact);
1180 }
1182 if (im->gdes[i].gf == GF_PRINT){
1183 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1184 if (bad_format(im->gdes[i].format)) {
1185 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1186 return -1;
1187 }
1188 #ifdef HAVE_SNPRINTF
1189 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1190 #else
1191 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1192 #endif
1193 (*prdata)[prlines-1] = NULL;
1194 } else {
1195 /* GF_GPRINT */
1197 if (bad_format(im->gdes[i].format)) {
1198 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1199 return -1;
1200 }
1201 #ifdef HAVE_SNPRINTF
1202 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1203 #else
1204 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1205 #endif
1206 graphelement = 1;
1207 }
1208 }
1209 break;
1210 case GF_COMMENT:
1211 case GF_LINE:
1212 case GF_AREA:
1213 case GF_TICK:
1214 case GF_PART:
1215 case GF_STACK:
1216 case GF_HRULE:
1217 case GF_VRULE:
1218 graphelement = 1;
1219 break;
1220 case GF_DEF:
1221 case GF_CDEF:
1222 case GF_VDEF:
1223 break;
1224 }
1225 }
1226 return graphelement;
1227 }
1230 /* place legends with color spots */
1231 int
1232 leg_place(image_desc_t *im)
1233 {
1234 /* graph labels */
1235 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1236 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1237 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1238 int fill=0, fill_last;
1239 int leg_c = 0;
1240 int leg_x = border, leg_y = im->ygif;
1241 int leg_cc;
1242 int glue = 0;
1243 int i,ii, mark = 0;
1244 char prt_fctn; /*special printfunctions */
1245 int *legspace;
1247 if( !(im->extra_flags & NOLEGEND) ) {
1248 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1249 rrd_set_error("malloc for legspace");
1250 return -1;
1251 }
1253 for(i=0;i<im->gdes_c;i++){
1254 fill_last = fill;
1256 leg_cc = strlen(im->gdes[i].legend);
1258 /* is there a controle code ant the end of the legend string ? */
1259 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1260 prt_fctn = im->gdes[i].legend[leg_cc-1];
1261 leg_cc -= 2;
1262 im->gdes[i].legend[leg_cc] = '\0';
1263 } else {
1264 prt_fctn = '\0';
1265 }
1266 /* remove exess space */
1267 while (prt_fctn=='g' &&
1268 leg_cc > 0 &&
1269 im->gdes[i].legend[leg_cc-1]==' '){
1270 leg_cc--;
1271 im->gdes[i].legend[leg_cc]='\0';
1272 }
1273 if (leg_cc != 0 ){
1274 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1276 if (fill > 0){
1277 /* no interleg space if string ends in \g */
1278 fill += legspace[i];
1279 }
1280 if (im->gdes[i].gf != GF_GPRINT &&
1281 im->gdes[i].gf != GF_COMMENT) {
1282 fill += box;
1283 }
1284 fill += gfx_get_text_width(fill+border,im->text_prop[TEXT_PROP_LEGEND].font,
1285 im->text_prop[TEXT_PROP_LEGEND].size,
1286 im->tabwidth,
1287 im->gdes[i].legend);
1288 leg_c++;
1289 } else {
1290 legspace[i]=0;
1291 }
1292 /* who said there was a special tag ... ?*/
1293 if (prt_fctn=='g') {
1294 prt_fctn = '\0';
1295 }
1296 if (prt_fctn == '\0') {
1297 if (i == im->gdes_c -1 ) prt_fctn ='l';
1299 /* is it time to place the legends ? */
1300 if (fill > im->xgif - 2*border){
1301 if (leg_c > 1) {
1302 /* go back one */
1303 i--;
1304 fill = fill_last;
1305 leg_c--;
1306 prt_fctn = 'j';
1307 } else {
1308 prt_fctn = 'l';
1309 }
1311 }
1312 }
1315 if (prt_fctn != '\0'){
1316 leg_x = border;
1317 if (leg_c >= 2 && prt_fctn == 'j') {
1318 glue = (im->xgif - fill - 2* border) / (leg_c-1);
1319 } else {
1320 glue = 0;
1321 }
1322 if (prt_fctn =='c') leg_x = (im->xgif - fill) / 2.0;
1323 if (prt_fctn =='r') leg_x = im->xgif - fill - border;
1325 for(ii=mark;ii<=i;ii++){
1326 if(im->gdes[ii].legend[0]=='\0')
1327 continue;
1328 im->gdes[ii].leg_x = leg_x;
1329 im->gdes[ii].leg_y = leg_y;
1330 leg_x +=
1331 gfx_get_text_width(leg_x,im->text_prop[TEXT_PROP_LEGEND].font,
1332 im->text_prop[TEXT_PROP_LEGEND].size,
1333 im->tabwidth,
1334 im->gdes[ii].legend)
1335 + legspace[ii]
1336 + glue;
1337 if (im->gdes[ii].gf != GF_GPRINT &&
1338 im->gdes[ii].gf != GF_COMMENT)
1339 leg_x += box;
1340 }
1341 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1342 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1343 fill = 0;
1344 leg_c = 0;
1345 mark = ii;
1346 }
1347 }
1348 im->ygif = leg_y+6;
1349 free(legspace);
1350 }
1351 return 0;
1352 }
1354 /* create a grid on the graph. it determines what to do
1355 from the values of xsize, start and end */
1357 /* the xaxis labels are determined from the number of seconds per pixel
1358 in the requested graph */
1362 int
1363 horizontal_grid(gfx_canvas_t *canvas, image_desc_t *im)
1364 {
1365 double range;
1366 double scaledrange;
1367 int pixel,i;
1368 int sgrid,egrid;
1369 double gridstep;
1370 double scaledstep;
1371 char graph_label[100];
1372 double x0,x1,y0,y1;
1373 int labfact,gridind;
1374 int decimals, fractionals;
1375 char labfmt[64];
1377 labfact=2;
1378 gridind=-1;
1379 range = im->maxval - im->minval;
1380 scaledrange = range / im->magfact;
1382 /* does the scale of this graph make it impossible to put lines
1383 on it? If so, give up. */
1384 if (isnan(scaledrange)) {
1385 return 0;
1386 }
1388 /* find grid spaceing */
1389 pixel=1;
1390 if(isnan(im->ygridstep)){
1391 if(im->extra_flags & ALTYGRID) {
1392 /* find the value with max number of digits. Get number of digits */
1393 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1394 if(decimals <= 0) /* everything is small. make place for zero */
1395 decimals = 1;
1397 fractionals = floor(log10(range));
1398 if(fractionals < 0) /* small amplitude. */
1399 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1400 else
1401 sprintf(labfmt, "%%%d.1f", decimals + 1);
1402 gridstep = pow((double)10, (double)fractionals);
1403 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1404 gridstep = 0.1;
1405 /* should have at least 5 lines but no more then 15 */
1406 if(range/gridstep < 5)
1407 gridstep /= 10;
1408 if(range/gridstep > 15)
1409 gridstep *= 10;
1410 if(range/gridstep > 5) {
1411 labfact = 1;
1412 if(range/gridstep > 8)
1413 labfact = 2;
1414 }
1415 else {
1416 gridstep /= 5;
1417 labfact = 5;
1418 }
1419 }
1420 else {
1421 for(i=0;ylab[i].grid > 0;i++){
1422 pixel = im->ysize / (scaledrange / ylab[i].grid);
1423 if (gridind == -1 && pixel > 5) {
1424 gridind = i;
1425 break;
1426 }
1427 }
1429 for(i=0; i<4;i++) {
1430 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1431 labfact = ylab[gridind].lfac[i];
1432 break;
1433 }
1434 }
1436 gridstep = ylab[gridind].grid * im->magfact;
1437 }
1438 } else {
1439 gridstep = im->ygridstep;
1440 labfact = im->ylabfact;
1441 }
1443 x0=im->xorigin;
1444 x1=im->xorigin+im->xsize;
1446 sgrid = (int)( im->minval / gridstep - 1);
1447 egrid = (int)( im->maxval / gridstep + 1);
1448 scaledstep = gridstep/im->magfact;
1449 for (i = sgrid; i <= egrid; i++){
1450 y0=ytr(im,gridstep*i);
1451 if ( y0 >= im->yorigin-im->ysize
1452 && y0 <= im->yorigin){
1453 if(i % labfact == 0){
1454 if (i==0 || im->symbol == ' ') {
1455 if(scaledstep < 1){
1456 if(im->extra_flags & ALTYGRID) {
1457 sprintf(graph_label,labfmt,scaledstep*i);
1458 }
1459 else {
1460 sprintf(graph_label,"%4.1f",scaledstep*i);
1461 }
1462 } else {
1463 sprintf(graph_label,"%4.0f",scaledstep*i);
1464 }
1465 }else {
1466 if(scaledstep < 1){
1467 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1468 } else {
1469 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1470 }
1471 }
1473 gfx_new_text ( canvas,
1474 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1475 im->graph_col[GRC_FONT],
1476 im->text_prop[TEXT_PROP_AXIS].font,
1477 im->text_prop[TEXT_PROP_AXIS].size,
1478 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1479 graph_label );
1480 gfx_new_line ( canvas,
1481 x0-2,y0,
1482 x1+2,y0,
1483 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1485 } else {
1486 gfx_new_line ( canvas,
1487 x0-1,y0,
1488 x1+1,y0,
1489 GRIDWIDTH, im->graph_col[GRC_GRID] );
1491 }
1492 }
1493 }
1494 return 1;
1495 }
1497 /* logaritmic horizontal grid */
1498 int
1499 horizontal_log_grid(gfx_canvas_t *canvas, image_desc_t *im)
1500 {
1501 double pixpex;
1502 int ii,i;
1503 int minoridx=0, majoridx=0;
1504 char graph_label[100];
1505 double x0,x1,y0,y1;
1506 double value, pixperstep, minstep;
1508 /* find grid spaceing */
1509 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1511 if (isnan(pixpex)) {
1512 return 0;
1513 }
1515 for(i=0;yloglab[i][0] > 0;i++){
1516 minstep = log10(yloglab[i][0]);
1517 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1518 if(yloglab[i][ii+2]==0){
1519 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1520 break;
1521 }
1522 }
1523 pixperstep = pixpex * minstep;
1524 if(pixperstep > 5){minoridx = i;}
1525 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1526 }
1528 x0=im->xorigin;
1529 x1=im->xorigin+im->xsize;
1530 /* paint minor grid */
1531 for (value = pow((double)10, log10(im->minval)
1532 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1533 value <= im->maxval;
1534 value *= yloglab[minoridx][0]){
1535 if (value < im->minval) continue;
1536 i=0;
1537 while(yloglab[minoridx][++i] > 0){
1538 y0 = ytr(im,value * yloglab[minoridx][i]);
1539 if (y0 <= im->yorigin - im->ysize) break;
1540 gfx_new_line ( canvas,
1541 x0-1,y0,
1542 x1+1,y0,
1543 GRIDWIDTH, im->graph_col[GRC_GRID] );
1544 }
1545 }
1547 /* paint major grid and labels*/
1548 for (value = pow((double)10, log10(im->minval)
1549 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1550 value <= im->maxval;
1551 value *= yloglab[majoridx][0]){
1552 if (value < im->minval) continue;
1553 i=0;
1554 while(yloglab[majoridx][++i] > 0){
1555 y0 = ytr(im,value * yloglab[majoridx][i]);
1556 if (y0 <= im->yorigin - im->ysize) break;
1557 gfx_new_line ( canvas,
1558 x0-2,y0,
1559 x1+2,y0,
1560 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1562 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1563 gfx_new_text ( canvas,
1564 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1565 im->graph_col[GRC_FONT],
1566 im->text_prop[TEXT_PROP_AXIS].font,
1567 im->text_prop[TEXT_PROP_AXIS].size,
1568 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1569 graph_label );
1570 }
1571 }
1572 return 1;
1573 }
1576 void
1577 vertical_grid(
1578 gfx_canvas_t *canvas,
1579 image_desc_t *im )
1580 {
1581 int xlab_sel; /* which sort of label and grid ? */
1582 time_t ti, tilab;
1583 long factor;
1584 char graph_label[100];
1585 double x0,y0,y1; /* points for filled graph and more*/
1588 /* the type of time grid is determined by finding
1589 the number of seconds per pixel in the graph */
1592 if(im->xlab_user.minsec == -1){
1593 factor=(im->end - im->start)/im->xsize;
1594 xlab_sel=0;
1595 while ( xlab[xlab_sel+1].minsec != -1
1596 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1597 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1598 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1599 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1600 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1601 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1602 im->xlab_user.labst = xlab[xlab_sel].labst;
1603 im->xlab_user.precis = xlab[xlab_sel].precis;
1604 im->xlab_user.stst = xlab[xlab_sel].stst;
1605 }
1607 /* y coords are the same for every line ... */
1608 y0 = im->yorigin;
1609 y1 = im->yorigin-im->ysize;
1612 /* paint the minor grid */
1613 for(ti = find_first_time(im->start,
1614 im->xlab_user.gridtm,
1615 im->xlab_user.gridst);
1616 ti < im->end;
1617 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1618 ){
1619 /* are we inside the graph ? */
1620 if (ti < im->start || ti > im->end) continue;
1621 x0 = xtr(im,ti);
1622 gfx_new_line(canvas,x0,y0+1, x0,y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1624 }
1626 /* paint the major grid */
1627 for(ti = find_first_time(im->start,
1628 im->xlab_user.mgridtm,
1629 im->xlab_user.mgridst);
1630 ti < im->end;
1631 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1632 ){
1633 /* are we inside the graph ? */
1634 if (ti < im->start || ti > im->end) continue;
1635 x0 = xtr(im,ti);
1636 gfx_new_line(canvas,x0,y0+2, x0,y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1638 }
1639 /* paint the labels below the graph */
1640 for(ti = find_first_time(im->start,
1641 im->xlab_user.labtm,
1642 im->xlab_user.labst);
1643 ti <= im->end;
1644 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1645 ){
1646 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1648 #if HAVE_STRFTIME
1649 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1650 #else
1651 # error "your libc has no strftime I guess we'll abort the exercise here."
1652 #endif
1653 gfx_new_text ( canvas,
1654 xtr(im,tilab), y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1655 im->graph_col[GRC_FONT],
1656 im->text_prop[TEXT_PROP_AXIS].font,
1657 im->text_prop[TEXT_PROP_AXIS].size,
1658 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1659 graph_label );
1661 }
1663 }
1666 void
1667 axis_paint(
1668 image_desc_t *im,
1669 gfx_canvas_t *canvas
1670 )
1671 {
1672 /* draw x and y axis */
1673 gfx_new_line ( canvas, im->xorigin+im->xsize,im->yorigin,
1674 im->xorigin+im->xsize,im->yorigin-im->ysize,
1675 GRIDWIDTH, im->graph_col[GRC_GRID]);
1677 gfx_new_line ( canvas, im->xorigin,im->yorigin-im->ysize,
1678 im->xorigin+im->xsize,im->yorigin-im->ysize,
1679 GRIDWIDTH, im->graph_col[GRC_GRID]);
1681 gfx_new_line ( canvas, im->xorigin-4,im->yorigin,
1682 im->xorigin+im->xsize+4,im->yorigin,
1683 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1685 gfx_new_line ( canvas, im->xorigin,im->yorigin+4,
1686 im->xorigin,im->yorigin-im->ysize-4,
1687 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1690 /* arrow for X axis direction */
1691 gfx_new_area ( canvas,
1692 im->xorigin+im->xsize+4, im->yorigin-3,
1693 im->xorigin+im->xsize+4, im->yorigin+3,
1694 im->xorigin+im->xsize+9, im->yorigin,
1695 im->graph_col[GRC_ARROW]);
1699 }
1701 void
1702 grid_paint(
1703 image_desc_t *im,
1704 gfx_canvas_t *canvas
1706 )
1707 {
1708 long i;
1709 int boxH=8, boxV=8;
1710 int res=0;
1711 double x0,x1,x2,x3,y0,y1,y2,y3; /* points for filled graph and more*/
1712 gfx_node_t *node;
1715 /* draw 3d border */
1716 node = gfx_new_area (canvas, 0,im->ygif, 0,0, im->xgif, 0,im->graph_col[GRC_SHADEA]);
1717 gfx_add_point( node , im->xgif - 2, 2 );
1718 gfx_add_point( node , 2,2 );
1719 gfx_add_point( node , 2,im->ygif-2 );
1720 gfx_add_point( node , 0,im->ygif );
1722 node = gfx_new_area (canvas, 0,im->ygif, im->xgif,im->ygif, im->xgif,0,im->graph_col[GRC_SHADEB]);
1723 gfx_add_point( node , im->xgif - 2, 2 );
1724 gfx_add_point( node , im->xgif-2,im->ygif-2 );
1725 gfx_add_point( node , 2,im->ygif-2 );
1726 gfx_add_point( node , 0,im->ygif );
1729 if (im->draw_x_grid == 1 )
1730 vertical_grid(canvas, im);
1732 if (im->draw_y_grid == 1){
1733 if(im->logarithmic){
1734 res = horizontal_log_grid(canvas,im);
1735 } else {
1736 res = horizontal_grid(canvas,im);
1737 }
1739 /* dont draw horizontal grid if there is no min and max val */
1740 if (! res ) {
1741 char *nodata = "No Data found";
1742 gfx_new_text(canvas,im->xgif/2, (2*im->yorigin-im->ysize) / 2,
1743 im->graph_col[GRC_FONT],
1744 im->text_prop[TEXT_PROP_AXIS].font,
1745 im->text_prop[TEXT_PROP_AXIS].size,
1746 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1747 nodata );
1748 }
1749 }
1751 /* yaxis description */
1752 gfx_new_text( canvas,
1753 7, (im->yorigin - im->ysize/2),
1754 im->graph_col[GRC_FONT],
1755 im->text_prop[TEXT_PROP_AXIS].font,
1756 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1757 GFX_H_CENTER, GFX_V_CENTER,
1758 im->ylegend);
1760 /* graph title */
1761 gfx_new_text( canvas,
1762 im->xgif/2, im->text_prop[TEXT_PROP_TITLE].size*1.5,
1763 im->graph_col[GRC_FONT],
1764 im->text_prop[TEXT_PROP_TITLE].font,
1765 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1766 GFX_H_CENTER, GFX_V_CENTER,
1767 im->title);
1769 /* graph labels */
1770 if( !(im->extra_flags & NOLEGEND) ) {
1771 for(i=0;i<im->gdes_c;i++){
1772 if(im->gdes[i].legend[0] =='\0')
1773 continue;
1775 if(im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT){
1776 x0 = im->gdes[i].leg_x;
1777 y0 = im->gdes[i].leg_y+1.0;
1778 x1 = x0+boxH;
1779 x2 = x0+boxH;
1780 x3 = x0;
1781 y1 = y0;
1782 y2 = y0+boxV;
1783 y3 = y0+boxV;
1784 node = gfx_new_area(canvas, x0,y0,x1,y1,x2,y2 ,im->gdes[i].col);
1785 gfx_add_point ( node, x3, y3 );
1786 gfx_add_point ( node, x0, y0 );
1787 node = gfx_new_line(canvas, x0,y0,x1,y1 ,GRIDWIDTH, im->graph_col[GRC_FRAME]);
1788 gfx_add_point ( node, x2, y2 );
1789 gfx_add_point ( node, x3, y3 );
1790 gfx_add_point ( node, x0, y0 );
1792 gfx_new_text ( canvas, x0+boxH+6, (y0+y2) / 2.0,
1793 im->graph_col[GRC_FONT],
1794 im->text_prop[TEXT_PROP_AXIS].font,
1795 im->text_prop[TEXT_PROP_AXIS].size,
1796 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
1797 im->gdes[i].legend );
1799 } else {
1800 x0 = im->gdes[i].leg_x;
1801 y0 = im->gdes[i].leg_y;
1803 gfx_new_text ( canvas, x0, (y0+y2) / 2.0,
1804 im->graph_col[GRC_FONT],
1805 im->text_prop[TEXT_PROP_AXIS].font,
1806 im->text_prop[TEXT_PROP_AXIS].size,
1807 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1808 im->gdes[i].legend );
1810 }
1811 }
1812 }
1813 }
1816 /*****************************************************
1817 * lazy check make sure we rely need to create this graph
1818 *****************************************************/
1820 int lazy_check(image_desc_t *im){
1821 FILE *fd = NULL;
1822 int size = 1;
1823 struct stat gifstat;
1825 if (im->lazy == 0) return 0; /* no lazy option */
1826 if (stat(im->graphfile,&gifstat) != 0)
1827 return 0; /* can't stat */
1828 /* one pixel in the existing graph is more then what we would
1829 change here ... */
1830 if (time(NULL) - gifstat.st_mtime >
1831 (im->end - im->start) / im->xsize)
1832 return 0;
1833 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1834 return 0; /* the file does not exist */
1835 switch (im->imgformat) {
1836 case IF_GIF:
1837 size = GifSize(fd,&(im->xgif),&(im->ygif));
1838 break;
1839 case IF_PNG:
1840 size = PngSize(fd,&(im->xgif),&(im->ygif));
1841 break;
1842 }
1843 fclose(fd);
1844 return size;
1845 }
1848 /* draw that picture thing ... */
1849 int
1850 graph_paint(image_desc_t *im, char ***calcpr)
1851 {
1852 int i,ii;
1853 int lazy = lazy_check(im);
1854 int piechart = 0, PieSize, PieCenterX, PieCenterY;
1855 double PieStart=0.0;
1856 FILE *fo;
1857 gfx_canvas_t *canvas;
1858 gfx_node_t *node;
1860 double areazero = 0.0;
1861 enum gf_en stack_gf = GF_PRINT;
1862 graph_desc_t *lastgdes = NULL;
1864 /* if we are lazy and there is nothing to PRINT ... quit now */
1865 if (lazy && im->prt_c==0) return 0;
1867 /* pull the data from the rrd files ... */
1869 if(data_fetch(im)==-1)
1870 return -1;
1872 /* evaluate VDEF and CDEF operations ... */
1873 if(data_calc(im)==-1)
1874 return -1;
1876 /* calculate and PRINT and GPRINT definitions. We have to do it at
1877 * this point because it will affect the length of the legends
1878 * if there are no graph elements we stop here ...
1879 * if we are lazy, try to quit ...
1880 */
1881 i=print_calc(im,calcpr);
1882 if(i<0) return -1;
1883 if(i==0 || lazy) return 0;
1885 /* get actual drawing data and find min and max values*/
1886 if(data_proc(im)==-1)
1887 return -1;
1889 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
1891 if(!im->rigid && ! im->logarithmic)
1892 expand_range(im); /* make sure the upper and lower limit are
1893 sensible values */
1895 /* init xtr and ytr */
1896 /* determine the actual size of the gif to draw. The size given
1897 on the cmdline is the graph area. But we need more as we have
1898 draw labels and other things outside the graph area */
1901 im->xorigin = 10 + 9 * im->text_prop[TEXT_PROP_LEGEND].size;
1903 xtr(im,0);
1905 im->yorigin = 10 + im->ysize;
1907 ytr(im,DNAN);
1909 if(im->title[0] != '\0')
1910 im->yorigin += im->text_prop[TEXT_PROP_TITLE].size*3+4;
1912 im->xgif= 20 +im->xsize + im->xorigin;
1913 im->ygif= im->yorigin+2* im->text_prop[TEXT_PROP_LEGEND].size;
1915 /* check if we need to draw a piechart */
1916 for(i=0;i<im->gdes_c;i++){
1917 if (im->gdes[i].gf == GF_PART) {
1918 piechart=1;
1919 break;
1920 }
1921 }
1923 if (piechart) {
1924 /* allocate enough space for the piechart itself (PieSize), 20%
1925 ** more for the background and an additional 50 pixels spacing.
1926 */
1927 if (im->xsize < im->ysize)
1928 PieSize = im->xsize;
1929 else
1930 PieSize = im->ysize;
1931 im->xgif += PieSize*1.2 + 50;
1933 PieCenterX = im->xorigin + im->xsize + 50 + PieSize*0.6;
1934 PieCenterY = im->yorigin - PieSize*0.5;
1935 }
1937 /* determine where to place the legends onto the graphics.
1938 and set im->ygif to match space requirements for text */
1939 if(leg_place(im)==-1)
1940 return -1;
1942 canvas=gfx_new_canvas();
1944 /* the actual graph is created by going through the individual
1945 graph elements and then drawing them */
1947 node=gfx_new_area ( canvas,
1948 0, 0,
1949 im->xgif, 0,
1950 im->xgif, im->ygif,
1951 im->graph_col[GRC_BACK]);
1953 gfx_add_point(node,0, im->ygif);
1955 node=gfx_new_area ( canvas,
1956 im->xorigin, im->yorigin,
1957 im->xorigin + im->xsize, im->yorigin,
1958 im->xorigin + im->xsize, im->yorigin-im->ysize,
1959 im->graph_col[GRC_CANVAS]);
1961 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
1963 if (piechart) {
1964 #if 1
1965 node=gfx_arc_sect (canvas,
1966 PieCenterX,PieCenterY,
1967 PieSize*0.6, PieSize*0.6, /* 20% more as background */
1968 0,M_PI*2,
1969 im->graph_col[GRC_CANVAS]);
1970 #else
1971 node=gfx_new_area ( canvas,
1972 PieCenterX-0.6*PieSize, PieCenterY-0.6*PieSize,
1973 PieCenterX+0.6*PieSize, PieCenterY-0.6*PieSize,
1974 PieCenterX+0.6*PieSize, PieCenterY+0.6*PieSize,
1975 im->graph_col[GRC_CANVAS]);
1976 gfx_add_point(node,
1977 PieCenterX-0.6*PieSize, PieCenterY+0.6*PieSize);
1978 #endif
1979 }
1981 if (im->minval > 0.0)
1982 areazero = im->minval;
1983 if (im->maxval < 0.0)
1984 areazero = im->maxval;
1986 axis_paint(im,canvas);
1989 for(i=0;i<im->gdes_c;i++){
1990 switch(im->gdes[i].gf){
1991 case GF_CDEF:
1992 case GF_VDEF:
1993 case GF_DEF:
1994 case GF_PRINT:
1995 case GF_GPRINT:
1996 case GF_COMMENT:
1997 case GF_HRULE:
1998 case GF_VRULE:
1999 break;
2000 case GF_TICK:
2001 for (ii = 0; ii < im->xsize; ii++)
2002 {
2003 if (!isnan(im->gdes[i].p_data[ii]) &&
2004 im->gdes[i].p_data[ii] > 0.0)
2005 {
2006 /* generate a tick */
2007 gfx_new_line(canvas, im -> xorigin + ii,
2008 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2009 im -> xorigin + ii,
2010 im -> yorigin,
2011 1.0,
2012 im -> gdes[i].col );
2013 }
2014 }
2015 break;
2016 case GF_LINE:
2017 case GF_AREA:
2018 stack_gf = im->gdes[i].gf;
2019 case GF_STACK:
2020 /* fix data points at oo and -oo */
2021 for(ii=0;ii<im->xsize;ii++){
2022 if (isinf(im->gdes[i].p_data[ii])){
2023 if (im->gdes[i].p_data[ii] > 0) {
2024 im->gdes[i].p_data[ii] = im->maxval ;
2025 } else {
2026 im->gdes[i].p_data[ii] = im->minval ;
2027 }
2029 }
2030 } /* for */
2032 if (im->gdes[i].col != 0x0){
2033 /* GF_LINE and friend */
2034 if(stack_gf == GF_LINE ){
2035 node = NULL;
2036 for(ii=1;ii<im->xsize;ii++){
2037 if ( ! isnan(im->gdes[i].p_data[ii-1])
2038 && ! isnan(im->gdes[i].p_data[ii])){
2039 if (node == NULL){
2040 node = gfx_new_line(canvas,
2041 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2042 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2043 im->gdes[i].linewidth,
2044 im->gdes[i].col);
2045 } else {
2046 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2047 }
2048 } else {
2049 node = NULL;
2050 }
2051 }
2052 } else {
2053 int area_start=-1;
2054 node = NULL;
2055 for(ii=1;ii<im->xsize;ii++){
2056 /* open an area */
2057 if ( ! isnan(im->gdes[i].p_data[ii-1])
2058 && ! isnan(im->gdes[i].p_data[ii])){
2059 if (node == NULL){
2060 float ybase = 0.0;
2061 if (im->gdes[i].gf == GF_STACK) {
2062 ybase = ytr(im,lastgdes->p_data[ii-1]);
2063 } else {
2064 ybase = ytr(im,areazero);
2065 }
2066 area_start = ii-1;
2067 node = gfx_new_area(canvas,
2068 ii-1+im->xorigin,ybase,
2069 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2070 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2071 im->gdes[i].col
2072 );
2073 } else {
2074 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2075 }
2076 }
2078 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2079 /* GF_AREA STACK type*/
2080 if (im->gdes[i].gf == GF_STACK ) {
2081 int iii;
2082 for (iii=ii-1;iii>area_start;iii--){
2083 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2084 }
2085 } else {
2086 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2087 };
2088 node=NULL;
2089 };
2090 }
2091 } /* else GF_LINE */
2092 } /* if color != 0x0 */
2093 /* make sure we do not run into trouble when stacking on NaN */
2094 for(ii=0;ii<im->xsize;ii++){
2095 if (isnan(im->gdes[i].p_data[ii])) {
2096 double ybase = 0.0;
2097 if (lastgdes) {
2098 ybase = ytr(im,lastgdes->p_data[ii-1]);
2099 };
2100 if (isnan(ybase) || !lastgdes ){
2101 ybase = ytr(im,areazero);
2102 }
2103 im->gdes[i].p_data[ii] = ybase;
2104 }
2105 }
2106 lastgdes = &(im->gdes[i]);
2107 break;
2108 case GF_PART:
2109 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2110 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2112 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2113 node=gfx_arc_sect(canvas,
2114 PieCenterX, PieCenterY,
2115 PieSize/2,PieSize/2,
2116 M_PI*2.0*PieStart/100.0,
2117 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0,
2118 im->gdes[i].col);
2119 PieStart += im->gdes[i].yrule;
2120 }
2121 break;
2122 } /* switch */
2123 }
2124 grid_paint(im,canvas);
2126 /* the RULES are the last thing to paint ... */
2127 for(i=0;i<im->gdes_c;i++){
2129 switch(im->gdes[i].gf){
2130 case GF_HRULE:
2131 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2132 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2133 };
2134 if(im->gdes[i].yrule >= im->minval
2135 && im->gdes[i].yrule <= im->maxval)
2136 gfx_new_line(canvas,
2137 im->xorigin,ytr(im,im->gdes[i].yrule),
2138 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2139 1.0,im->gdes[i].col);
2140 break;
2141 case GF_VRULE:
2142 if(im->gdes[i].xrule == 0) { /* fetch variable */
2143 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2144 };
2145 if(im->gdes[i].xrule >= im->start
2146 && im->gdes[i].xrule <= im->end)
2147 gfx_new_line(canvas,
2148 xtr(im,im->gdes[i].xrule),im->yorigin,
2149 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2150 1.0,im->gdes[i].col);
2151 break;
2152 default:
2153 break;
2154 }
2155 }
2158 if (strcmp(im->graphfile,"-")==0) {
2159 #ifdef WIN32
2160 /* Change translation mode for stdout to BINARY */
2161 _setmode( _fileno( stdout ), O_BINARY );
2162 #endif
2163 fo = stdout;
2164 } else {
2165 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2166 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2167 strerror(errno));
2168 return (-1);
2169 }
2170 }
2171 switch (im->imgformat) {
2172 case IF_GIF:
2173 break;
2174 case IF_PNG:
2175 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2176 break;
2177 }
2178 if (strcmp(im->graphfile,"-") != 0)
2179 fclose(fo);
2181 gfx_destroy(canvas);
2182 return 0;
2183 }
2186 /*****************************************************
2187 * graph stuff
2188 *****************************************************/
2190 int
2191 gdes_alloc(image_desc_t *im){
2193 long def_step = (im->end-im->start)/im->xsize;
2195 if (im->step > def_step) /* step can be increassed ... no decreassed */
2196 def_step = im->step;
2198 im->gdes_c++;
2200 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2201 * sizeof(graph_desc_t)))==NULL){
2202 rrd_set_error("realloc graph_descs");
2203 return -1;
2204 }
2207 im->gdes[im->gdes_c-1].step=def_step;
2208 im->gdes[im->gdes_c-1].start=im->start;
2209 im->gdes[im->gdes_c-1].end=im->end;
2210 im->gdes[im->gdes_c-1].vname[0]='\0';
2211 im->gdes[im->gdes_c-1].data=NULL;
2212 im->gdes[im->gdes_c-1].ds_namv=NULL;
2213 im->gdes[im->gdes_c-1].data_first=0;
2214 im->gdes[im->gdes_c-1].p_data=NULL;
2215 im->gdes[im->gdes_c-1].rpnp=NULL;
2216 im->gdes[im->gdes_c-1].col = 0x0;
2217 im->gdes[im->gdes_c-1].legend[0]='\0';
2218 im->gdes[im->gdes_c-1].rrd[0]='\0';
2219 im->gdes[im->gdes_c-1].ds=-1;
2220 im->gdes[im->gdes_c-1].p_data=NULL;
2221 return 0;
2222 }
2224 /* copies input untill the first unescaped colon is found
2225 or until input ends. backslashes have to be escaped as well */
2226 int
2227 scan_for_col(char *input, int len, char *output)
2228 {
2229 int inp,outp=0;
2230 for (inp=0;
2231 inp < len &&
2232 input[inp] != ':' &&
2233 input[inp] != '\0';
2234 inp++){
2235 if (input[inp] == '\\' &&
2236 input[inp+1] != '\0' &&
2237 (input[inp+1] == '\\' ||
2238 input[inp+1] == ':')){
2239 output[outp++] = input[++inp];
2240 }
2241 else {
2242 output[outp++] = input[inp];
2243 }
2244 }
2245 output[outp] = '\0';
2246 return inp;
2247 }
2249 /* Some surgery done on this function, it became ridiculously big.
2250 ** Things moved:
2251 ** - initializing now in rrd_graph_init()
2252 ** - options parsing now in rrd_graph_options()
2253 ** - script parsing now in rrd_graph_script()
2254 */
2255 int
2256 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2257 {
2258 image_desc_t im;
2260 rrd_graph_init(&im);
2262 rrd_graph_options(argc,argv,&im);
2263 if (rrd_test_error()) return -1;
2265 if (strlen(argv[optind])>=MAXPATH) {
2266 rrd_set_error("filename (including path) too long");
2267 return -1;
2268 }
2269 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2270 im.graphfile[MAXPATH-1]='\0';
2272 rrd_graph_script(argc,argv,&im);
2273 if (rrd_test_error()) return -1;
2275 /* Everything is now read and the actual work can start */
2277 (*prdata)=NULL;
2278 if (graph_paint(&im,prdata)==-1){
2279 im_free(&im);
2280 return -1;
2281 }
2283 /* The image is generated and needs to be output.
2284 ** Also, if needed, print a line with information about the image.
2285 */
2287 *xsize=im.xgif;
2288 *ysize=im.ygif;
2289 if (im.imginfo) {
2290 char *filename;
2291 if (!(*prdata)) {
2292 /* maybe prdata is not allocated yet ... lets do it now */
2293 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2294 rrd_set_error("malloc imginfo");
2295 return -1;
2296 };
2297 }
2298 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2299 ==NULL){
2300 rrd_set_error("malloc imginfo");
2301 return -1;
2302 }
2303 filename=im.graphfile+strlen(im.graphfile);
2304 while(filename > im.graphfile) {
2305 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2306 filename--;
2307 }
2309 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2310 }
2311 im_free(&im);
2312 return 0;
2313 }
2315 void
2316 rrd_graph_init(image_desc_t *im)
2317 {
2318 int i;
2320 im->xlab_user.minsec = -1;
2321 im->xgif=0;
2322 im->ygif=0;
2323 im->xsize = 400;
2324 im->ysize = 100;
2325 im->step = 0;
2326 im->ylegend[0] = '\0';
2327 im->title[0] = '\0';
2328 im->minval = DNAN;
2329 im->maxval = DNAN;
2330 im->interlaced = 0;
2331 im->unitsexponent= 9999;
2332 im->extra_flags= 0;
2333 im->rigid = 0;
2334 im->imginfo = NULL;
2335 im->lazy = 0;
2336 im->logarithmic = 0;
2337 im->ygridstep = DNAN;
2338 im->draw_x_grid = 1;
2339 im->draw_y_grid = 1;
2340 im->base = 1000;
2341 im->prt_c = 0;
2342 im->gdes_c = 0;
2343 im->gdes = NULL;
2344 im->zoom = 1.0;
2345 im->imgformat = IF_GIF; /* we default to GIF output */
2347 for(i=0;i<DIM(graph_col);i++)
2348 im->graph_col[i]=graph_col[i];
2350 for(i=0;i<DIM(text_prop);i++){
2351 im->text_prop[i].size = text_prop[i].size;
2352 im->text_prop[i].font = text_prop[i].font;
2353 }
2354 }
2356 void
2357 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2358 {
2359 int stroff;
2360 char *parsetime_error = NULL;
2361 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2362 time_t start_tmp=0,end_tmp=0;
2363 long long_tmp;
2364 struct time_value start_tv, end_tv;
2365 gfx_color_t color;
2367 parsetime("end-24h", &start_tv);
2368 parsetime("now", &end_tv);
2370 while (1){
2371 static struct option long_options[] =
2372 {
2373 {"start", required_argument, 0, 's'},
2374 {"end", required_argument, 0, 'e'},
2375 {"x-grid", required_argument, 0, 'x'},
2376 {"y-grid", required_argument, 0, 'y'},
2377 {"vertical-label",required_argument,0,'v'},
2378 {"width", required_argument, 0, 'w'},
2379 {"height", required_argument, 0, 'h'},
2380 {"interlaced", no_argument, 0, 'i'},
2381 {"upper-limit",required_argument, 0, 'u'},
2382 {"lower-limit",required_argument, 0, 'l'},
2383 {"rigid", no_argument, 0, 'r'},
2384 {"base", required_argument, 0, 'b'},
2385 {"logarithmic",no_argument, 0, 'o'},
2386 {"color", required_argument, 0, 'c'},
2387 {"font", required_argument, 0, 'n'},
2388 {"title", required_argument, 0, 't'},
2389 {"imginfo", required_argument, 0, 'f'},
2390 {"imgformat", required_argument, 0, 'a'},
2391 {"lazy", no_argument, 0, 'z'},
2392 {"zoom", required_argument, 0, 'm'},
2393 {"no-legend", no_argument, 0, 'g'},
2394 {"alt-y-grid", no_argument, 0, 257 },
2395 {"alt-autoscale", no_argument, 0, 258 },
2396 {"alt-autoscale-max", no_argument, 0, 259 },
2397 {"units-exponent",required_argument, 0, 260},
2398 {"step", required_argument, 0, 261},
2399 {0,0,0,0}};
2400 int option_index = 0;
2401 int opt;
2404 opt = getopt_long(argc, argv,
2405 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2406 long_options, &option_index);
2408 if (opt == EOF)
2409 break;
2411 switch(opt) {
2412 case 257:
2413 im->extra_flags |= ALTYGRID;
2414 break;
2415 case 258:
2416 im->extra_flags |= ALTAUTOSCALE;
2417 break;
2418 case 259:
2419 im->extra_flags |= ALTAUTOSCALE_MAX;
2420 break;
2421 case 'g':
2422 im->extra_flags |= NOLEGEND;
2423 break;
2424 case 260:
2425 im->unitsexponent = atoi(optarg);
2426 break;
2427 case 261:
2428 im->step = atoi(optarg);
2429 break;
2430 case 's':
2431 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2432 rrd_set_error( "start time: %s", parsetime_error );
2433 return;
2434 }
2435 break;
2436 case 'e':
2437 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2438 rrd_set_error( "end time: %s", parsetime_error );
2439 return;
2440 }
2441 break;
2442 case 'x':
2443 if(strcmp(optarg,"none") == 0){
2444 im->draw_x_grid=0;
2445 break;
2446 };
2448 if(sscanf(optarg,
2449 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2450 scan_gtm,
2451 &im->xlab_user.gridst,
2452 scan_mtm,
2453 &im->xlab_user.mgridst,
2454 scan_ltm,
2455 &im->xlab_user.labst,
2456 &im->xlab_user.precis,
2457 &stroff) == 7 && stroff != 0){
2458 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2459 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2460 rrd_set_error("unknown keyword %s",scan_gtm);
2461 return;
2462 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2463 rrd_set_error("unknown keyword %s",scan_mtm);
2464 return;
2465 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2466 rrd_set_error("unknown keyword %s",scan_ltm);
2467 return;
2468 }
2469 im->xlab_user.minsec = 1;
2470 im->xlab_user.stst = im->xlab_form;
2471 } else {
2472 rrd_set_error("invalid x-grid format");
2473 return;
2474 }
2475 break;
2476 case 'y':
2478 if(strcmp(optarg,"none") == 0){
2479 im->draw_y_grid=0;
2480 break;
2481 };
2483 if(sscanf(optarg,
2484 "%lf:%d",
2485 &im->ygridstep,
2486 &im->ylabfact) == 2) {
2487 if(im->ygridstep<=0){
2488 rrd_set_error("grid step must be > 0");
2489 return;
2490 } else if (im->ylabfact < 1){
2491 rrd_set_error("label factor must be > 0");
2492 return;
2493 }
2494 } else {
2495 rrd_set_error("invalid y-grid format");
2496 return;
2497 }
2498 break;
2499 case 'v':
2500 strncpy(im->ylegend,optarg,150);
2501 im->ylegend[150]='\0';
2502 break;
2503 case 'u':
2504 im->maxval = atof(optarg);
2505 break;
2506 case 'l':
2507 im->minval = atof(optarg);
2508 break;
2509 case 'b':
2510 im->base = atol(optarg);
2511 if(im->base != 1024 && im->base != 1000 ){
2512 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2513 return;
2514 }
2515 break;
2516 case 'w':
2517 long_tmp = atol(optarg);
2518 if (long_tmp < 10) {
2519 rrd_set_error("width below 10 pixels");
2520 return;
2521 }
2522 im->xsize = long_tmp;
2523 break;
2524 case 'h':
2525 long_tmp = atol(optarg);
2526 if (long_tmp < 10) {
2527 rrd_set_error("height below 10 pixels");
2528 return;
2529 }
2530 im->ysize = long_tmp;
2531 break;
2532 case 'i':
2533 im->interlaced = 1;
2534 break;
2535 case 'r':
2536 im->rigid = 1;
2537 break;
2538 case 'f':
2539 im->imginfo = optarg;
2540 break;
2541 case 'a':
2542 if((im->imgformat = if_conv(optarg)) == -1) {
2543 rrd_set_error("unsupported graphics format '%s'",optarg);
2544 return;
2545 }
2546 break;
2547 case 'z':
2548 im->lazy = 1;
2549 break;
2550 case 'o':
2551 im->logarithmic = 1;
2552 if (isnan(im->minval))
2553 im->minval=1;
2554 break;
2555 case 'c':
2556 if(sscanf(optarg,
2557 "%10[A-Z]#%8x",
2558 col_nam,&color) == 2){
2559 int ci;
2560 if((ci=grc_conv(col_nam)) != -1){
2561 im->graph_col[ci]=color;
2562 } else {
2563 rrd_set_error("invalid color name '%s'",col_nam);
2564 }
2565 } else {
2566 rrd_set_error("invalid color def format");
2567 return -1;
2568 }
2569 break;
2570 case 'n':{
2571 /* originally this used char *prop = "" and
2572 ** char *font = "dummy" however this results
2573 ** in a SEG fault, at least on RH7.1
2574 **
2575 ** The current implementation isn't proper
2576 ** either, font is never freed and prop uses
2577 ** a fixed width string
2578 */
2579 char prop[100];
2580 double size = 1;
2581 char *font;
2583 font=malloc(255);
2584 if(sscanf(optarg,
2585 "%10[A-Z]:%lf:%s",
2586 prop,&size,font) == 3){
2587 int sindex;
2588 if((sindex=text_prop_conv(prop)) != -1){
2589 im->text_prop[sindex].size=size;
2590 im->text_prop[sindex].font=font;
2591 if (sindex==0) { /* the default */
2592 im->text_prop[TEXT_PROP_TITLE].size=size;
2593 im->text_prop[TEXT_PROP_TITLE].font=font;
2594 im->text_prop[TEXT_PROP_AXIS].size=size;
2595 im->text_prop[TEXT_PROP_AXIS].font=font;
2596 im->text_prop[TEXT_PROP_UNIT].size=size;
2597 im->text_prop[TEXT_PROP_UNIT].font=font;
2598 im->text_prop[TEXT_PROP_LEGEND].size=size;
2599 im->text_prop[TEXT_PROP_LEGEND].font=font;
2600 }
2601 } else {
2602 rrd_set_error("invalid fonttag '%s'",prop);
2603 return;
2604 }
2605 } else {
2606 rrd_set_error("invalid text property format");
2607 return;
2608 }
2609 break;
2610 }
2611 case 'm':
2612 im->zoom= atof(optarg);
2613 if (im->zoom <= 0.0) {
2614 rrd_set_error("zoom factor must be > 0");
2615 return;
2616 }
2617 break;
2618 case 't':
2619 strncpy(im->title,optarg,150);
2620 im->title[150]='\0';
2621 break;
2623 case '?':
2624 if (optopt != 0)
2625 rrd_set_error("unknown option '%c'", optopt);
2626 else
2627 rrd_set_error("unknown option '%s'",argv[optind-1]);
2628 return;
2629 }
2630 }
2632 if (optind >= argc) {
2633 rrd_set_error("missing filename");
2634 return;
2635 }
2637 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2638 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2639 return;
2640 }
2642 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2643 /* error string is set in parsetime.c */
2644 return;
2645 }
2647 if (start_tmp < 3600*24*365*10){
2648 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2649 return;
2650 }
2652 if (end_tmp < start_tmp) {
2653 rrd_set_error("start (%ld) should be less than end (%ld)",
2654 start_tmp, end_tmp);
2655 return;
2656 }
2658 im->start = start_tmp;
2659 im->end = end_tmp;
2660 }
2662 void
2663 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2664 {
2665 int i;
2666 char symname[100];
2667 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2669 for (i=optind+1;i<argc;i++) {
2670 int argstart=0;
2671 int strstart=0;
2672 graph_desc_t *gdp;
2673 char *line;
2674 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2675 double d;
2676 double linewidth;
2677 int j,k,l,m;
2679 /* Each command is one element from *argv[], we call this "line".
2680 **
2681 ** Each command defines the most current gdes inside struct im.
2682 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2683 */
2684 gdes_alloc(im);
2685 gdp=&im->gdes[im->gdes_c-1];
2686 line=argv[i];
2688 /* function:newvname=string[:ds-name:CF] for xDEF
2689 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2690 ** function:vname#color[:num[:string]] for TICK
2691 ** function:vname-or-num#color[:string] for xRULE,PART
2692 ** function:vname:CF:string for xPRINT
2693 ** function:string for COMMENT
2694 */
2695 argstart=0;
2697 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2698 if (argstart==0) {
2699 rrd_set_error("Cannot parse function in line: %s",line);
2700 im_free(im);
2701 return;
2702 }
2703 if(sscanf(funcname,"LINE%lf",&linewidth)){
2704 im->gdes[im->gdes_c-1].gf = GF_LINE;
2705 im->gdes[im->gdes_c-1].linewidth = linewidth;
2706 } else {
2707 if ((gdp->gf=gf_conv(funcname))==-1) {
2708 rrd_set_error("'%s' is not a valid function name",funcname);
2709 im_free(im);
2710 return;
2711 }
2712 }
2714 /* If the error string is set, we exit at the end of the switch */
2715 switch (gdp->gf) {
2716 case GF_COMMENT:
2717 if (rrd_graph_legend(gdp,&line[argstart])==0)
2718 rrd_set_error("Cannot parse comment in line: %s",line);
2719 break;
2720 case GF_PART:
2721 case GF_VRULE:
2722 case GF_HRULE:
2723 j=k=l=m=0;
2724 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2725 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2726 if (k+m==0) {
2727 rrd_set_error("Cannot parse name or num in line: %s",line);
2728 break;
2729 }
2730 if (j!=0) {
2731 gdp->xrule=d;
2732 gdp->yrule=d;
2733 argstart+=j;
2734 } else if (!rrd_graph_check_vname(im,vname,line)) {
2735 gdp->xrule=0;
2736 gdp->yrule=DNAN;
2737 argstart+=l;
2738 } else break; /* exit due to wrong vname */
2739 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2740 argstart+=j;
2741 if (strlen(&line[argstart])!=0) {
2742 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2743 rrd_set_error("Cannot parse comment in line: %s",line);
2744 }
2745 break;
2746 case GF_STACK:
2747 if (linepass==0) {
2748 rrd_set_error("STACK must follow another graphing element");
2749 break;
2750 }
2751 case GF_LINE:
2752 case GF_AREA:
2753 case GF_TICK:
2754 j=k=0;
2755 linepass=1;
2756 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2757 if (j+1!=k)
2758 rrd_set_error("Cannot parse vname in line: %s",line);
2759 else if (rrd_graph_check_vname(im,vname,line))
2760 rrd_set_error("Undefined vname '%s' in line: %s",line);
2761 else
2762 k=rrd_graph_color(im,&line[argstart],line,1);
2763 if (rrd_test_error()) break;
2764 argstart=argstart+j+k;
2765 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2766 j=0;
2767 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2768 argstart+=j;
2769 }
2770 if (strlen(&line[argstart])!=0)
2771 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2772 rrd_set_error("Cannot parse legend in line: %s",line);
2773 break;
2774 case GF_PRINT:
2775 im->prt_c++;
2776 case GF_GPRINT:
2777 j=0;
2778 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2779 if (j==0) {
2780 rrd_set_error("Cannot parse vname in line: '%s'",line);
2781 break;
2782 }
2783 argstart+=j;
2784 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2785 j=0;
2786 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2788 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2789 #define VIDX im->gdes[gdp->vidx]
2790 switch (k) {
2791 case -1: /* looks CF but is not really CF */
2792 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2793 break;
2794 case 0: /* CF present and correct */
2795 if (VIDX.gf == GF_VDEF)
2796 rrd_set_error("Don't use CF when printing VDEF");
2797 argstart+=j;
2798 break;
2799 case 1: /* CF not present */
2800 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2801 else rrd_set_error("Printing DEF or CDEF needs CF");
2802 break;
2803 default:
2804 rrd_set_error("Oops, bug in GPRINT scanning");
2805 }
2806 #undef VIDX
2807 if (rrd_test_error()) break;
2809 if (strlen(&line[argstart])!=0) {
2810 if (rrd_graph_legend(gdp,&line[argstart])==0)
2811 rrd_set_error("Cannot parse legend in line: %s",line);
2812 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2813 strcpy(gdp->format, gdp->legend);
2814 break;
2815 case GF_DEF:
2816 case GF_VDEF:
2817 case GF_CDEF:
2818 j=0;
2819 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2820 if (j==0) {
2821 rrd_set_error("Could not parse line: %s",line);
2822 break;
2823 }
2824 if (find_var(im,gdp->vname)!=-1) {
2825 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2826 gdp->vname,line);
2827 break;
2828 }
2829 argstart+=j;
2830 switch (gdp->gf) {
2831 case GF_DEF:
2832 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2833 j=k=0;
2834 sscanf(&line[argstart],
2835 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2836 gdp->ds_nam, symname, &j, &k);
2837 if ((j==0)||(k!=0)) {
2838 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2839 break;
2840 }
2841 rrd_graph_check_CF(im,symname,line);
2842 break;
2843 case GF_VDEF:
2844 j=0;
2845 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2846 if (j==0) {
2847 rrd_set_error("Cannot parse vname in line '%s'",line);
2848 break;
2849 }
2850 argstart+=j;
2851 if (rrd_graph_check_vname(im,vname,line)) return;
2852 if ( im->gdes[gdp->vidx].gf != GF_DEF
2853 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2854 rrd_set_error("variable '%s' not DEF nor "
2855 "CDEF in VDEF '%s'", vname,gdp->vname);
2856 break;
2857 }
2858 vdef_parse(gdp,&line[argstart+strstart]);
2859 break;
2860 case GF_CDEF:
2861 if (strstr(&line[argstart],":")!=NULL) {
2862 rrd_set_error("Error in RPN, line: %s",line);
2863 break;
2864 }
2865 if ((gdp->rpnp = rpn_parse(
2866 (void *)im,
2867 &line[argstart],
2868 &find_var_wrapper)
2869 )==NULL)
2870 rrd_set_error("invalid rpn expression in: %s",line);
2871 break;
2872 default: break;
2873 }
2874 break;
2875 default: rrd_set_error("Big oops");
2876 }
2877 if (rrd_test_error()) {
2878 im_free(im);
2879 return;
2880 }
2881 }
2883 if (im->gdes_c==0){
2884 rrd_set_error("can't make a graph without contents");
2885 im_free(im); /* ??? is this set ??? */
2886 return;
2887 }
2888 }
2889 int
2890 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2891 {
2892 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2893 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2894 return -1;
2895 }
2896 return 0;
2897 }
2898 int
2899 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2900 {
2901 char *color;
2902 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2904 color=strstr(var,"#");
2905 if (color==NULL) {
2906 if (optional==0) {
2907 rrd_set_error("Found no color in %s",err);
2908 return 0;
2909 }
2910 return 0;
2911 } else {
2912 int n=0;
2913 char *rest;
2914 gfx_color_t col;
2916 rest=strstr(color,":");
2917 if (rest!=NULL)
2918 n=rest-color;
2919 else
2920 n=strlen(color);
2922 switch (n) {
2923 case 7:
2924 sscanf(color,"#%6x%n",&col,&n);
2925 col = (col << 8) + 0xff /* shift left by 8 */;
2926 if (n!=7) rrd_set_error("Color problem in %s",err);
2927 break;
2928 case 9:
2929 sscanf(color,"#%8x%n",&col,&n);
2930 if (n==9) break;
2931 default:
2932 rrd_set_error("Color problem in %s",err);
2933 }
2934 if (rrd_test_error()) return 0;
2935 gdp->col = col;
2936 return n;
2937 }
2938 }
2939 int
2940 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
2941 {
2942 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
2943 rrd_set_error("Unknown CF '%s' in %s",symname,err);
2944 return -1;
2945 }
2946 return 0;
2947 }
2948 int
2949 rrd_graph_legend(graph_desc_t *gdp, char *line)
2950 {
2951 int i;
2953 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
2955 return (strlen(&line[i])==0);
2956 }
2959 int bad_format(char *fmt) {
2960 char *ptr;
2961 int n=0;
2963 ptr = fmt;
2964 while (*ptr != '\0') {
2965 if (*ptr == '%') {ptr++;
2966 if (*ptr == '\0') return 1;
2967 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
2968 ptr++;
2969 }
2970 if (*ptr == '\0') return 1;
2971 if (*ptr == 'l') {
2972 ptr++;
2973 n++;
2974 if (*ptr == '\0') return 1;
2975 if (*ptr == 'e' || *ptr == 'f') {
2976 ptr++;
2977 } else { return 1; }
2978 }
2979 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
2980 else { return 1; }
2981 } else {
2982 ++ptr;
2983 }
2984 }
2985 return (n!=1);
2986 }
2987 int
2988 vdef_parse(gdes,str)
2989 struct graph_desc_t *gdes;
2990 char *str;
2991 {
2992 /* A VDEF currently is either "func" or "param,func"
2993 * so the parsing is rather simple. Change if needed.
2994 */
2995 double param;
2996 char func[30];
2997 int n;
2999 n=0;
3000 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3001 if (n==strlen(str)) { /* matched */
3002 ;
3003 } else {
3004 n=0;
3005 sscanf(str,"%29[A-Z]%n",func,&n);
3006 if (n==strlen(str)) { /* matched */
3007 param=DNAN;
3008 } else {
3009 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3010 ,str
3011 ,gdes->vname
3012 );
3013 return -1;
3014 }
3015 }
3016 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3017 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3018 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3019 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3020 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3021 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3022 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3023 else {
3024 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3025 ,func
3026 ,gdes->vname
3027 );
3028 return -1;
3029 };
3031 switch (gdes->vf.op) {
3032 case VDEF_PERCENT:
3033 if (isnan(param)) { /* no parameter given */
3034 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3035 ,func
3036 ,gdes->vname
3037 );
3038 return -1;
3039 };
3040 if (param>=0.0 && param<=100.0) {
3041 gdes->vf.param = param;
3042 gdes->vf.val = DNAN; /* undefined */
3043 gdes->vf.when = 0; /* undefined */
3044 } else {
3045 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3046 ,param
3047 ,gdes->vname
3048 );
3049 return -1;
3050 };
3051 break;
3052 case VDEF_MAXIMUM:
3053 case VDEF_AVERAGE:
3054 case VDEF_MINIMUM:
3055 case VDEF_TOTAL:
3056 case VDEF_FIRST:
3057 case VDEF_LAST:
3058 if (isnan(param)) {
3059 gdes->vf.param = DNAN;
3060 gdes->vf.val = DNAN;
3061 gdes->vf.when = 0;
3062 } else {
3063 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3064 ,func
3065 ,gdes->vname
3066 );
3067 return -1;
3068 };
3069 break;
3070 };
3071 return 0;
3072 }
3073 int
3074 vdef_calc(im,gdi)
3075 image_desc_t *im;
3076 int gdi;
3077 {
3078 graph_desc_t *src,*dst;
3079 rrd_value_t *data;
3080 long step,steps;
3082 dst = &im->gdes[gdi];
3083 src = &im->gdes[dst->vidx];
3084 data = src->data + src->ds;
3085 steps = (src->end - src->start) / src->step;
3087 #if 0
3088 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3089 ,src->start
3090 ,src->end
3091 ,steps
3092 );
3093 #endif
3095 switch (dst->vf.op) {
3096 case VDEF_PERCENT: {
3097 rrd_value_t * array;
3098 int field;
3101 if ((array = malloc(steps*sizeof(double)))==NULL) {
3102 rrd_set_error("malloc VDEV_PERCENT");
3103 return -1;
3104 }
3105 for (step=0;step < steps; step++) {
3106 array[step]=data[step*src->ds_cnt];
3107 }
3108 qsort(array,step,sizeof(double),vdef_percent_compar);
3110 field = (steps-1)*dst->vf.param/100;
3111 dst->vf.val = array[field];
3112 dst->vf.when = 0; /* no time component */
3113 #if 0
3114 for(step=0;step<steps;step++)
3115 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3116 #endif
3117 }
3118 break;
3119 case VDEF_MAXIMUM:
3120 step=0;
3121 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3122 if (step == steps) {
3123 dst->vf.val = DNAN;
3124 dst->vf.when = 0;
3125 } else {
3126 dst->vf.val = data[step*src->ds_cnt];
3127 dst->vf.when = src->start + (step+1)*src->step;
3128 }
3129 while (step != steps) {
3130 if (finite(data[step*src->ds_cnt])) {
3131 if (data[step*src->ds_cnt] > dst->vf.val) {
3132 dst->vf.val = data[step*src->ds_cnt];
3133 dst->vf.when = src->start + (step+1)*src->step;
3134 }
3135 }
3136 step++;
3137 }
3138 break;
3139 case VDEF_TOTAL:
3140 case VDEF_AVERAGE: {
3141 int cnt=0;
3142 double sum=0.0;
3143 for (step=0;step<steps;step++) {
3144 if (finite(data[step*src->ds_cnt])) {
3145 sum += data[step*src->ds_cnt];
3146 cnt ++;
3147 };
3148 }
3149 if (cnt) {
3150 if (dst->vf.op == VDEF_TOTAL) {
3151 dst->vf.val = sum*src->step;
3152 dst->vf.when = cnt*src->step; /* not really "when" */
3153 } else {
3154 dst->vf.val = sum/cnt;
3155 dst->vf.when = 0; /* no time component */
3156 };
3157 } else {
3158 dst->vf.val = DNAN;
3159 dst->vf.when = 0;
3160 }
3161 }
3162 break;
3163 case VDEF_MINIMUM:
3164 step=0;
3165 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3166 if (step == steps) {
3167 dst->vf.val = DNAN;
3168 dst->vf.when = 0;
3169 } else {
3170 dst->vf.val = data[step*src->ds_cnt];
3171 dst->vf.when = src->start + (step+1)*src->step;
3172 }
3173 while (step != steps) {
3174 if (finite(data[step*src->ds_cnt])) {
3175 if (data[step*src->ds_cnt] < dst->vf.val) {
3176 dst->vf.val = data[step*src->ds_cnt];
3177 dst->vf.when = src->start + (step+1)*src->step;
3178 }
3179 }
3180 step++;
3181 }
3182 break;
3183 case VDEF_FIRST:
3184 /* The time value returned here is one step before the
3185 * actual time value. This is the start of the first
3186 * non-NaN interval.
3187 */
3188 step=0;
3189 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3190 if (step == steps) { /* all entries were NaN */
3191 dst->vf.val = DNAN;
3192 dst->vf.when = 0;
3193 } else {
3194 dst->vf.val = data[step*src->ds_cnt];
3195 dst->vf.when = src->start + step*src->step;
3196 }
3197 break;
3198 case VDEF_LAST:
3199 /* The time value returned here is the
3200 * actual time value. This is the end of the last
3201 * non-NaN interval.
3202 */
3203 step=steps-1;
3204 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3205 if (step < 0) { /* all entries were NaN */
3206 dst->vf.val = DNAN;
3207 dst->vf.when = 0;
3208 } else {
3209 dst->vf.val = data[step*src->ds_cnt];
3210 dst->vf.when = src->start + (step+1)*src->step;
3211 }
3212 break;
3213 }
3214 return 0;
3215 }
3217 /* NaN < -INF < finite_values < INF */
3218 int
3219 vdef_percent_compar(a,b)
3220 const void *a,*b;
3221 {
3222 /* Equality is not returned; this doesn't hurt except
3223 * (maybe) for a little performance.
3224 */
3226 /* First catch NaN values. They are smallest */
3227 if (isnan( *(double *)a )) return -1;
3228 if (isnan( *(double *)b )) return 1;
3230 /* NaN doesn't reach this part so INF and -INF are extremes.
3231 * The sign from isinf() is compatible with the sign we return
3232 */
3233 if (isinf( *(double *)a )) return isinf( *(double *)a );
3234 if (isinf( *(double *)b )) return isinf( *(double *)b );
3236 /* If we reach this, both values must be finite */
3237 if ( *(double *)a < *(double *)b ) return -1; else return 1;
3238 }