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;
1855 double PieStart=0.0, PieSize, PieCenterX, PieCenterY;
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();
1945 /* the actual graph is created by going through the individual
1946 graph elements and then drawing them */
1948 node=gfx_new_area ( canvas,
1949 0, 0,
1950 im->xgif, 0,
1951 im->xgif, im->ygif,
1952 im->graph_col[GRC_BACK]);
1954 gfx_add_point(node,0, im->ygif);
1956 node=gfx_new_area ( canvas,
1957 im->xorigin, im->yorigin,
1958 im->xorigin + im->xsize, im->yorigin,
1959 im->xorigin + im->xsize, im->yorigin-im->ysize,
1960 im->graph_col[GRC_CANVAS]);
1962 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
1964 #if 0
1965 /******************************************************************
1966 ** Just to play around. If you see this, I forgot to remove it **
1967 ******************************************************************/
1968 im->ygif+=100;
1969 node=gfx_new_area(canvas,
1970 0, im->ygif-100,
1971 im->xgif, im->ygif-100,
1972 im->xgif, im->ygif,
1973 im->graph_col[GRC_CANVAS]);
1974 gfx_add_point(node,0,im->ygif);
1976 node=gfx_new_line (canvas,
1977 0, im->ygif-100,
1978 im->xgif-3, im->ygif-100,
1979 1.0,
1980 0xFF0000FF);
1981 gfx_add_point(node,im->xgif-3,im->ygif-3);
1982 gfx_add_point(node,2,im->ygif-3);
1983 gfx_add_point(node,2,im->ygif-100);
1986 #if 0
1987 node=gfx_new_area ( canvas,
1988 1, im->ygif-99,
1989 im->xgif-1, im->ygif-99,
1990 im->xgif-1, im->ygif-1,
1991 im->graph_col[GRC_CANVAS]);
1992 gfx_add_point(node,1,im->ygif-1);
1993 #endif
1995 #endif
1997 if (piechart) {
1998 int n;
2000 node=gfx_new_area(canvas,
2001 PieCenterX,PieCenterY-PieSize*0.6,
2002 PieCenterX,PieCenterY,
2003 PieCenterX,PieCenterY-PieSize*0.6,
2004 im->graph_col[GRC_CANVAS]);
2005 for (n=1;n<500;n++) {
2006 double angle;
2007 angle=M_PI*2.0*n/500.0;
2008 gfx_add_point(node,
2009 PieCenterX+sin(angle)*PieSize*0.6,
2010 PieCenterY-cos(angle)*PieSize*0.6 );
2011 }
2012 }
2014 if (im->minval > 0.0)
2015 areazero = im->minval;
2016 if (im->maxval < 0.0)
2017 areazero = im->maxval;
2019 axis_paint(im,canvas);
2022 for(i=0;i<im->gdes_c;i++){
2023 switch(im->gdes[i].gf){
2024 case GF_CDEF:
2025 case GF_VDEF:
2026 case GF_DEF:
2027 case GF_PRINT:
2028 case GF_GPRINT:
2029 case GF_COMMENT:
2030 case GF_HRULE:
2031 case GF_VRULE:
2032 break;
2033 case GF_TICK:
2034 for (ii = 0; ii < im->xsize; ii++)
2035 {
2036 if (!isnan(im->gdes[i].p_data[ii]) &&
2037 im->gdes[i].p_data[ii] > 0.0)
2038 {
2039 /* generate a tick */
2040 gfx_new_line(canvas, im -> xorigin + ii,
2041 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2042 im -> xorigin + ii,
2043 im -> yorigin,
2044 1.0,
2045 im -> gdes[i].col );
2046 }
2047 }
2048 break;
2049 case GF_LINE:
2050 case GF_AREA:
2051 stack_gf = im->gdes[i].gf;
2052 case GF_STACK:
2053 /* fix data points at oo and -oo */
2054 for(ii=0;ii<im->xsize;ii++){
2055 if (isinf(im->gdes[i].p_data[ii])){
2056 if (im->gdes[i].p_data[ii] > 0) {
2057 im->gdes[i].p_data[ii] = im->maxval ;
2058 } else {
2059 im->gdes[i].p_data[ii] = im->minval ;
2060 }
2062 }
2063 } /* for */
2065 if (im->gdes[i].col != 0x0){
2066 /* GF_LINE and friend */
2067 if(stack_gf == GF_LINE ){
2068 node = NULL;
2069 for(ii=1;ii<im->xsize;ii++){
2070 if ( ! isnan(im->gdes[i].p_data[ii-1])
2071 && ! isnan(im->gdes[i].p_data[ii])){
2072 if (node == NULL){
2073 node = gfx_new_line(canvas,
2074 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2075 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2076 im->gdes[i].linewidth,
2077 im->gdes[i].col);
2078 } else {
2079 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2080 }
2081 } else {
2082 node = NULL;
2083 }
2084 }
2085 } else {
2086 int area_start=-1;
2087 node = NULL;
2088 for(ii=1;ii<im->xsize;ii++){
2089 /* open an area */
2090 if ( ! isnan(im->gdes[i].p_data[ii-1])
2091 && ! isnan(im->gdes[i].p_data[ii])){
2092 if (node == NULL){
2093 float ybase = 0.0;
2094 if (im->gdes[i].gf == GF_STACK) {
2095 ybase = ytr(im,lastgdes->p_data[ii-1]);
2096 } else {
2097 ybase = ytr(im,areazero);
2098 }
2099 area_start = ii-1;
2100 node = gfx_new_area(canvas,
2101 ii-1+im->xorigin,ybase,
2102 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2103 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2104 im->gdes[i].col
2105 );
2106 } else {
2107 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2108 }
2109 }
2111 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2112 /* GF_AREA STACK type*/
2113 if (im->gdes[i].gf == GF_STACK ) {
2114 int iii;
2115 for (iii=ii-1;iii>area_start;iii--){
2116 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2117 }
2118 } else {
2119 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2120 };
2121 node=NULL;
2122 };
2123 }
2124 } /* else GF_LINE */
2125 } /* if color != 0x0 */
2126 /* make sure we do not run into trouble when stacking on NaN */
2127 for(ii=0;ii<im->xsize;ii++){
2128 if (isnan(im->gdes[i].p_data[ii])) {
2129 double ybase = 0.0;
2130 if (lastgdes) {
2131 ybase = ytr(im,lastgdes->p_data[ii-1]);
2132 };
2133 if (isnan(ybase) || !lastgdes ){
2134 ybase = ytr(im,areazero);
2135 }
2136 im->gdes[i].p_data[ii] = ybase;
2137 }
2138 }
2139 lastgdes = &(im->gdes[i]);
2140 break;
2141 case GF_PART:
2142 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2143 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2145 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2146 double angle,endangle;
2147 int n;
2149 angle=M_PI*2.0*PieStart/100.0;
2150 endangle=M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0;
2151 node=gfx_new_area(canvas,
2152 PieCenterX+sin(endangle)*PieSize/2,
2153 PieCenterY-cos(endangle)*PieSize/2,
2154 PieCenterX,
2155 PieCenterY,
2156 PieCenterX+sin(angle)*PieSize/2,
2157 PieCenterY-cos(angle)*PieSize/2,
2158 im->gdes[i].col);
2159 for (n=1;n<100;n++) {
2160 angle=M_PI*2.0*(PieStart+n/100.0*im->gdes[i].yrule)/100.0;
2161 gfx_add_point(node,
2162 PieCenterX+sin(angle)*PieSize/2,
2163 PieCenterY-cos(angle)*PieSize/2 );
2164 }
2165 PieStart += im->gdes[i].yrule;
2166 }
2167 break;
2168 } /* switch */
2169 }
2170 grid_paint(im,canvas);
2172 /* the RULES are the last thing to paint ... */
2173 for(i=0;i<im->gdes_c;i++){
2175 switch(im->gdes[i].gf){
2176 case GF_HRULE:
2177 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2178 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2179 };
2180 if(im->gdes[i].yrule >= im->minval
2181 && im->gdes[i].yrule <= im->maxval)
2182 gfx_new_line(canvas,
2183 im->xorigin,ytr(im,im->gdes[i].yrule),
2184 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2185 1.0,im->gdes[i].col);
2186 break;
2187 case GF_VRULE:
2188 if(im->gdes[i].xrule == 0) { /* fetch variable */
2189 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2190 };
2191 if(im->gdes[i].xrule >= im->start
2192 && im->gdes[i].xrule <= im->end)
2193 gfx_new_line(canvas,
2194 xtr(im,im->gdes[i].xrule),im->yorigin,
2195 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2196 1.0,im->gdes[i].col);
2197 break;
2198 default:
2199 break;
2200 }
2201 }
2204 if (strcmp(im->graphfile,"-")==0) {
2205 #ifdef WIN32
2206 /* Change translation mode for stdout to BINARY */
2207 _setmode( _fileno( stdout ), O_BINARY );
2208 #endif
2209 fo = stdout;
2210 } else {
2211 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2212 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2213 strerror(errno));
2214 return (-1);
2215 }
2216 }
2217 switch (im->imgformat) {
2218 case IF_GIF:
2219 break;
2220 case IF_PNG:
2221 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2222 break;
2223 }
2224 if (strcmp(im->graphfile,"-") != 0)
2225 fclose(fo);
2227 gfx_destroy(canvas);
2228 return 0;
2229 }
2232 /*****************************************************
2233 * graph stuff
2234 *****************************************************/
2236 int
2237 gdes_alloc(image_desc_t *im){
2239 long def_step = (im->end-im->start)/im->xsize;
2241 if (im->step > def_step) /* step can be increassed ... no decreassed */
2242 def_step = im->step;
2244 im->gdes_c++;
2246 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2247 * sizeof(graph_desc_t)))==NULL){
2248 rrd_set_error("realloc graph_descs");
2249 return -1;
2250 }
2253 im->gdes[im->gdes_c-1].step=def_step;
2254 im->gdes[im->gdes_c-1].start=im->start;
2255 im->gdes[im->gdes_c-1].end=im->end;
2256 im->gdes[im->gdes_c-1].vname[0]='\0';
2257 im->gdes[im->gdes_c-1].data=NULL;
2258 im->gdes[im->gdes_c-1].ds_namv=NULL;
2259 im->gdes[im->gdes_c-1].data_first=0;
2260 im->gdes[im->gdes_c-1].p_data=NULL;
2261 im->gdes[im->gdes_c-1].rpnp=NULL;
2262 im->gdes[im->gdes_c-1].col = 0x0;
2263 im->gdes[im->gdes_c-1].legend[0]='\0';
2264 im->gdes[im->gdes_c-1].rrd[0]='\0';
2265 im->gdes[im->gdes_c-1].ds=-1;
2266 im->gdes[im->gdes_c-1].p_data=NULL;
2267 return 0;
2268 }
2270 /* copies input untill the first unescaped colon is found
2271 or until input ends. backslashes have to be escaped as well */
2272 int
2273 scan_for_col(char *input, int len, char *output)
2274 {
2275 int inp,outp=0;
2276 for (inp=0;
2277 inp < len &&
2278 input[inp] != ':' &&
2279 input[inp] != '\0';
2280 inp++){
2281 if (input[inp] == '\\' &&
2282 input[inp+1] != '\0' &&
2283 (input[inp+1] == '\\' ||
2284 input[inp+1] == ':')){
2285 output[outp++] = input[++inp];
2286 }
2287 else {
2288 output[outp++] = input[inp];
2289 }
2290 }
2291 output[outp] = '\0';
2292 return inp;
2293 }
2295 /* Some surgery done on this function, it became ridiculously big.
2296 ** Things moved:
2297 ** - initializing now in rrd_graph_init()
2298 ** - options parsing now in rrd_graph_options()
2299 ** - script parsing now in rrd_graph_script()
2300 */
2301 int
2302 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2303 {
2304 image_desc_t im;
2306 rrd_graph_init(&im);
2308 rrd_graph_options(argc,argv,&im);
2309 if (rrd_test_error()) return -1;
2311 if (strlen(argv[optind])>=MAXPATH) {
2312 rrd_set_error("filename (including path) too long");
2313 return -1;
2314 }
2315 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2316 im.graphfile[MAXPATH-1]='\0';
2318 rrd_graph_script(argc,argv,&im);
2319 if (rrd_test_error()) return -1;
2321 /* Everything is now read and the actual work can start */
2323 (*prdata)=NULL;
2324 if (graph_paint(&im,prdata)==-1){
2325 im_free(&im);
2326 return -1;
2327 }
2329 /* The image is generated and needs to be output.
2330 ** Also, if needed, print a line with information about the image.
2331 */
2333 *xsize=im.xgif;
2334 *ysize=im.ygif;
2335 if (im.imginfo) {
2336 char *filename;
2337 if (!(*prdata)) {
2338 /* maybe prdata is not allocated yet ... lets do it now */
2339 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2340 rrd_set_error("malloc imginfo");
2341 return -1;
2342 };
2343 }
2344 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2345 ==NULL){
2346 rrd_set_error("malloc imginfo");
2347 return -1;
2348 }
2349 filename=im.graphfile+strlen(im.graphfile);
2350 while(filename > im.graphfile) {
2351 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2352 filename--;
2353 }
2355 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2356 }
2357 im_free(&im);
2358 return 0;
2359 }
2361 void
2362 rrd_graph_init(image_desc_t *im)
2363 {
2364 int i;
2366 im->xlab_user.minsec = -1;
2367 im->xgif=0;
2368 im->ygif=0;
2369 im->xsize = 400;
2370 im->ysize = 100;
2371 im->step = 0;
2372 im->ylegend[0] = '\0';
2373 im->title[0] = '\0';
2374 im->minval = DNAN;
2375 im->maxval = DNAN;
2376 im->interlaced = 0;
2377 im->unitsexponent= 9999;
2378 im->extra_flags= 0;
2379 im->rigid = 0;
2380 im->imginfo = NULL;
2381 im->lazy = 0;
2382 im->logarithmic = 0;
2383 im->ygridstep = DNAN;
2384 im->draw_x_grid = 1;
2385 im->draw_y_grid = 1;
2386 im->base = 1000;
2387 im->prt_c = 0;
2388 im->gdes_c = 0;
2389 im->gdes = NULL;
2390 im->zoom = 1.0;
2391 im->imgformat = IF_GIF; /* we default to GIF output */
2393 for(i=0;i<DIM(graph_col);i++)
2394 im->graph_col[i]=graph_col[i];
2396 for(i=0;i<DIM(text_prop);i++){
2397 im->text_prop[i].size = text_prop[i].size;
2398 im->text_prop[i].font = text_prop[i].font;
2399 }
2400 }
2402 void
2403 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2404 {
2405 int stroff;
2406 char *parsetime_error = NULL;
2407 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2408 time_t start_tmp=0,end_tmp=0;
2409 long long_tmp;
2410 struct time_value start_tv, end_tv;
2411 gfx_color_t color;
2413 parsetime("end-24h", &start_tv);
2414 parsetime("now", &end_tv);
2416 while (1){
2417 static struct option long_options[] =
2418 {
2419 {"start", required_argument, 0, 's'},
2420 {"end", required_argument, 0, 'e'},
2421 {"x-grid", required_argument, 0, 'x'},
2422 {"y-grid", required_argument, 0, 'y'},
2423 {"vertical-label",required_argument,0,'v'},
2424 {"width", required_argument, 0, 'w'},
2425 {"height", required_argument, 0, 'h'},
2426 {"interlaced", no_argument, 0, 'i'},
2427 {"upper-limit",required_argument, 0, 'u'},
2428 {"lower-limit",required_argument, 0, 'l'},
2429 {"rigid", no_argument, 0, 'r'},
2430 {"base", required_argument, 0, 'b'},
2431 {"logarithmic",no_argument, 0, 'o'},
2432 {"color", required_argument, 0, 'c'},
2433 {"font", required_argument, 0, 'n'},
2434 {"title", required_argument, 0, 't'},
2435 {"imginfo", required_argument, 0, 'f'},
2436 {"imgformat", required_argument, 0, 'a'},
2437 {"lazy", no_argument, 0, 'z'},
2438 {"zoom", required_argument, 0, 'm'},
2439 {"no-legend", no_argument, 0, 'g'},
2440 {"alt-y-grid", no_argument, 0, 257 },
2441 {"alt-autoscale", no_argument, 0, 258 },
2442 {"alt-autoscale-max", no_argument, 0, 259 },
2443 {"units-exponent",required_argument, 0, 260},
2444 {"step", required_argument, 0, 261},
2445 {0,0,0,0}};
2446 int option_index = 0;
2447 int opt;
2450 opt = getopt_long(argc, argv,
2451 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2452 long_options, &option_index);
2454 if (opt == EOF)
2455 break;
2457 switch(opt) {
2458 case 257:
2459 im->extra_flags |= ALTYGRID;
2460 break;
2461 case 258:
2462 im->extra_flags |= ALTAUTOSCALE;
2463 break;
2464 case 259:
2465 im->extra_flags |= ALTAUTOSCALE_MAX;
2466 break;
2467 case 'g':
2468 im->extra_flags |= NOLEGEND;
2469 break;
2470 case 260:
2471 im->unitsexponent = atoi(optarg);
2472 break;
2473 case 261:
2474 im->step = atoi(optarg);
2475 break;
2476 case 's':
2477 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2478 rrd_set_error( "start time: %s", parsetime_error );
2479 return;
2480 }
2481 break;
2482 case 'e':
2483 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2484 rrd_set_error( "end time: %s", parsetime_error );
2485 return;
2486 }
2487 break;
2488 case 'x':
2489 if(strcmp(optarg,"none") == 0){
2490 im->draw_x_grid=0;
2491 break;
2492 };
2494 if(sscanf(optarg,
2495 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2496 scan_gtm,
2497 &im->xlab_user.gridst,
2498 scan_mtm,
2499 &im->xlab_user.mgridst,
2500 scan_ltm,
2501 &im->xlab_user.labst,
2502 &im->xlab_user.precis,
2503 &stroff) == 7 && stroff != 0){
2504 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2505 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2506 rrd_set_error("unknown keyword %s",scan_gtm);
2507 return;
2508 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2509 rrd_set_error("unknown keyword %s",scan_mtm);
2510 return;
2511 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2512 rrd_set_error("unknown keyword %s",scan_ltm);
2513 return;
2514 }
2515 im->xlab_user.minsec = 1;
2516 im->xlab_user.stst = im->xlab_form;
2517 } else {
2518 rrd_set_error("invalid x-grid format");
2519 return;
2520 }
2521 break;
2522 case 'y':
2524 if(strcmp(optarg,"none") == 0){
2525 im->draw_y_grid=0;
2526 break;
2527 };
2529 if(sscanf(optarg,
2530 "%lf:%d",
2531 &im->ygridstep,
2532 &im->ylabfact) == 2) {
2533 if(im->ygridstep<=0){
2534 rrd_set_error("grid step must be > 0");
2535 return;
2536 } else if (im->ylabfact < 1){
2537 rrd_set_error("label factor must be > 0");
2538 return;
2539 }
2540 } else {
2541 rrd_set_error("invalid y-grid format");
2542 return;
2543 }
2544 break;
2545 case 'v':
2546 strncpy(im->ylegend,optarg,150);
2547 im->ylegend[150]='\0';
2548 break;
2549 case 'u':
2550 im->maxval = atof(optarg);
2551 break;
2552 case 'l':
2553 im->minval = atof(optarg);
2554 break;
2555 case 'b':
2556 im->base = atol(optarg);
2557 if(im->base != 1024 && im->base != 1000 ){
2558 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2559 return;
2560 }
2561 break;
2562 case 'w':
2563 long_tmp = atol(optarg);
2564 if (long_tmp < 10) {
2565 rrd_set_error("width below 10 pixels");
2566 return;
2567 }
2568 im->xsize = long_tmp;
2569 break;
2570 case 'h':
2571 long_tmp = atol(optarg);
2572 if (long_tmp < 10) {
2573 rrd_set_error("height below 10 pixels");
2574 return;
2575 }
2576 im->ysize = long_tmp;
2577 break;
2578 case 'i':
2579 im->interlaced = 1;
2580 break;
2581 case 'r':
2582 im->rigid = 1;
2583 break;
2584 case 'f':
2585 im->imginfo = optarg;
2586 break;
2587 case 'a':
2588 if((im->imgformat = if_conv(optarg)) == -1) {
2589 rrd_set_error("unsupported graphics format '%s'",optarg);
2590 return;
2591 }
2592 break;
2593 case 'z':
2594 im->lazy = 1;
2595 break;
2596 case 'o':
2597 im->logarithmic = 1;
2598 if (isnan(im->minval))
2599 im->minval=1;
2600 break;
2601 case 'c':
2602 if(sscanf(optarg,
2603 "%10[A-Z]#%8x",
2604 col_nam,&color) == 2){
2605 int ci;
2606 if((ci=grc_conv(col_nam)) != -1){
2607 im->graph_col[ci]=color;
2608 } else {
2609 rrd_set_error("invalid color name '%s'",col_nam);
2610 }
2611 } else {
2612 rrd_set_error("invalid color def format");
2613 return -1;
2614 }
2615 break;
2616 case 'n':{
2617 /* originally this used char *prop = "" and
2618 ** char *font = "dummy" however this results
2619 ** in a SEG fault, at least on RH7.1
2620 **
2621 ** The current implementation isn't proper
2622 ** either, font is never freed and prop uses
2623 ** a fixed width string
2624 */
2625 char prop[100];
2626 double size = 1;
2627 char *font;
2629 font=malloc(255);
2630 if(sscanf(optarg,
2631 "%10[A-Z]:%lf:%s",
2632 prop,&size,font) == 3){
2633 int sindex;
2634 if((sindex=text_prop_conv(prop)) != -1){
2635 im->text_prop[sindex].size=size;
2636 im->text_prop[sindex].font=font;
2637 if (sindex==0) { /* the default */
2638 im->text_prop[TEXT_PROP_TITLE].size=size;
2639 im->text_prop[TEXT_PROP_TITLE].font=font;
2640 im->text_prop[TEXT_PROP_AXIS].size=size;
2641 im->text_prop[TEXT_PROP_AXIS].font=font;
2642 im->text_prop[TEXT_PROP_UNIT].size=size;
2643 im->text_prop[TEXT_PROP_UNIT].font=font;
2644 im->text_prop[TEXT_PROP_LEGEND].size=size;
2645 im->text_prop[TEXT_PROP_LEGEND].font=font;
2646 }
2647 } else {
2648 rrd_set_error("invalid fonttag '%s'",prop);
2649 return;
2650 }
2651 } else {
2652 rrd_set_error("invalid text property format");
2653 return;
2654 }
2655 break;
2656 }
2657 case 'm':
2658 im->zoom= atof(optarg);
2659 if (im->zoom <= 0.0) {
2660 rrd_set_error("zoom factor must be > 0");
2661 return;
2662 }
2663 break;
2664 case 't':
2665 strncpy(im->title,optarg,150);
2666 im->title[150]='\0';
2667 break;
2669 case '?':
2670 if (optopt != 0)
2671 rrd_set_error("unknown option '%c'", optopt);
2672 else
2673 rrd_set_error("unknown option '%s'",argv[optind-1]);
2674 return;
2675 }
2676 }
2678 if (optind >= argc) {
2679 rrd_set_error("missing filename");
2680 return;
2681 }
2683 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2684 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2685 return;
2686 }
2688 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2689 /* error string is set in parsetime.c */
2690 return;
2691 }
2693 if (start_tmp < 3600*24*365*10){
2694 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2695 return;
2696 }
2698 if (end_tmp < start_tmp) {
2699 rrd_set_error("start (%ld) should be less than end (%ld)",
2700 start_tmp, end_tmp);
2701 return;
2702 }
2704 im->start = start_tmp;
2705 im->end = end_tmp;
2706 }
2708 void
2709 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2710 {
2711 int i;
2712 char symname[100];
2713 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2715 for (i=optind+1;i<argc;i++) {
2716 int argstart=0;
2717 int strstart=0;
2718 graph_desc_t *gdp;
2719 char *line;
2720 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2721 double d;
2722 double linewidth;
2723 int j,k,l,m;
2725 /* Each command is one element from *argv[], we call this "line".
2726 **
2727 ** Each command defines the most current gdes inside struct im.
2728 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2729 */
2730 gdes_alloc(im);
2731 gdp=&im->gdes[im->gdes_c-1];
2732 line=argv[i];
2734 /* function:newvname=string[:ds-name:CF] for xDEF
2735 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2736 ** function:vname#color[:num[:string]] for TICK
2737 ** function:vname-or-num#color[:string] for xRULE,PART
2738 ** function:vname:CF:string for xPRINT
2739 ** function:string for COMMENT
2740 */
2741 argstart=0;
2743 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2744 if (argstart==0) {
2745 rrd_set_error("Cannot parse function in line: %s",line);
2746 im_free(im);
2747 return;
2748 }
2749 if(sscanf(funcname,"LINE%lf",&linewidth)){
2750 im->gdes[im->gdes_c-1].gf = GF_LINE;
2751 im->gdes[im->gdes_c-1].linewidth = linewidth;
2752 } else {
2753 if ((gdp->gf=gf_conv(funcname))==-1) {
2754 rrd_set_error("'%s' is not a valid function name",funcname);
2755 im_free(im);
2756 return;
2757 }
2758 }
2760 /* If the error string is set, we exit at the end of the switch */
2761 switch (gdp->gf) {
2762 case GF_COMMENT:
2763 if (rrd_graph_legend(gdp,&line[argstart])==0)
2764 rrd_set_error("Cannot parse comment in line: %s",line);
2765 break;
2766 case GF_PART:
2767 case GF_VRULE:
2768 case GF_HRULE:
2769 j=k=l=m=0;
2770 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2771 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2772 if (k+m==0) {
2773 rrd_set_error("Cannot parse name or num in line: %s",line);
2774 break;
2775 }
2776 if (j!=0) {
2777 gdp->xrule=d;
2778 gdp->yrule=d;
2779 argstart+=j;
2780 } else if (!rrd_graph_check_vname(im,vname,line)) {
2781 gdp->xrule=0;
2782 gdp->yrule=DNAN;
2783 argstart+=l;
2784 } else break; /* exit due to wrong vname */
2785 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2786 argstart+=j;
2787 if (strlen(&line[argstart])!=0) {
2788 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2789 rrd_set_error("Cannot parse comment in line: %s",line);
2790 }
2791 break;
2792 case GF_STACK:
2793 if (linepass==0) {
2794 rrd_set_error("STACK must follow another graphing element");
2795 break;
2796 }
2797 case GF_LINE:
2798 case GF_AREA:
2799 case GF_TICK:
2800 j=k=0;
2801 linepass=1;
2802 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2803 if (j+1!=k)
2804 rrd_set_error("Cannot parse vname in line: %s",line);
2805 else if (rrd_graph_check_vname(im,vname,line))
2806 rrd_set_error("Undefined vname '%s' in line: %s",line);
2807 else
2808 k=rrd_graph_color(im,&line[argstart],line,1);
2809 if (rrd_test_error()) break;
2810 argstart=argstart+j+k;
2811 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2812 j=0;
2813 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2814 argstart+=j;
2815 }
2816 if (strlen(&line[argstart])!=0)
2817 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2818 rrd_set_error("Cannot parse legend in line: %s",line);
2819 break;
2820 case GF_PRINT:
2821 im->prt_c++;
2822 case GF_GPRINT:
2823 j=0;
2824 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2825 if (j==0) {
2826 rrd_set_error("Cannot parse vname in line: '%s'",line);
2827 break;
2828 }
2829 argstart+=j;
2830 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2831 j=0;
2832 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2834 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2835 #define VIDX im->gdes[gdp->vidx]
2836 switch (k) {
2837 case -1: /* looks CF but is not really CF */
2838 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2839 break;
2840 case 0: /* CF present and correct */
2841 if (VIDX.gf == GF_VDEF)
2842 rrd_set_error("Don't use CF when printing VDEF");
2843 argstart+=j;
2844 break;
2845 case 1: /* CF not present */
2846 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2847 else rrd_set_error("Printing DEF or CDEF needs CF");
2848 break;
2849 default:
2850 rrd_set_error("Oops, bug in GPRINT scanning");
2851 }
2852 #undef VIDX
2853 if (rrd_test_error()) break;
2855 if (strlen(&line[argstart])!=0) {
2856 if (rrd_graph_legend(gdp,&line[argstart])==0)
2857 rrd_set_error("Cannot parse legend in line: %s",line);
2858 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2859 strcpy(gdp->format, gdp->legend);
2860 break;
2861 case GF_DEF:
2862 case GF_VDEF:
2863 case GF_CDEF:
2864 j=0;
2865 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2866 if (j==0) {
2867 rrd_set_error("Could not parse line: %s",line);
2868 break;
2869 }
2870 if (find_var(im,gdp->vname)!=-1) {
2871 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2872 gdp->vname,line);
2873 break;
2874 }
2875 argstart+=j;
2876 switch (gdp->gf) {
2877 case GF_DEF:
2878 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2879 j=k=0;
2880 sscanf(&line[argstart],
2881 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2882 gdp->ds_nam, symname, &j, &k);
2883 if ((j==0)||(k!=0)) {
2884 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2885 break;
2886 }
2887 rrd_graph_check_CF(im,symname,line);
2888 break;
2889 case GF_VDEF:
2890 j=0;
2891 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2892 if (j==0) {
2893 rrd_set_error("Cannot parse vname in line '%s'",line);
2894 break;
2895 }
2896 argstart+=j;
2897 if (rrd_graph_check_vname(im,vname,line)) return;
2898 if ( im->gdes[gdp->vidx].gf != GF_DEF
2899 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2900 rrd_set_error("variable '%s' not DEF nor "
2901 "CDEF in VDEF '%s'", vname,gdp->vname);
2902 break;
2903 }
2904 vdef_parse(gdp,&line[argstart+strstart]);
2905 break;
2906 case GF_CDEF:
2907 if (strstr(&line[argstart],":")!=NULL) {
2908 rrd_set_error("Error in RPN, line: %s",line);
2909 break;
2910 }
2911 if ((gdp->rpnp = rpn_parse(
2912 (void *)im,
2913 &line[argstart],
2914 &find_var_wrapper)
2915 )==NULL)
2916 rrd_set_error("invalid rpn expression in: %s",line);
2917 break;
2918 default: break;
2919 }
2920 break;
2921 default: rrd_set_error("Big oops");
2922 }
2923 if (rrd_test_error()) {
2924 im_free(im);
2925 return;
2926 }
2927 }
2929 if (im->gdes_c==0){
2930 rrd_set_error("can't make a graph without contents");
2931 im_free(im); /* ??? is this set ??? */
2932 return;
2933 }
2934 }
2935 int
2936 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2937 {
2938 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2939 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2940 return -1;
2941 }
2942 return 0;
2943 }
2944 int
2945 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2946 {
2947 char *color;
2948 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2950 color=strstr(var,"#");
2951 if (color==NULL) {
2952 if (optional==0) {
2953 rrd_set_error("Found no color in %s",err);
2954 return 0;
2955 }
2956 return 0;
2957 } else {
2958 int n=0;
2959 char *rest;
2960 gfx_color_t col;
2962 rest=strstr(color,":");
2963 if (rest!=NULL)
2964 n=rest-color;
2965 else
2966 n=strlen(color);
2968 switch (n) {
2969 case 7:
2970 sscanf(color,"#%6x%n",&col,&n);
2971 col = (col << 8) + 0xff /* shift left by 8 */;
2972 if (n!=7) rrd_set_error("Color problem in %s",err);
2973 break;
2974 case 9:
2975 sscanf(color,"#%8x%n",&col,&n);
2976 if (n==9) break;
2977 default:
2978 rrd_set_error("Color problem in %s",err);
2979 }
2980 if (rrd_test_error()) return 0;
2981 gdp->col = col;
2982 return n;
2983 }
2984 }
2985 int
2986 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
2987 {
2988 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
2989 rrd_set_error("Unknown CF '%s' in %s",symname,err);
2990 return -1;
2991 }
2992 return 0;
2993 }
2994 int
2995 rrd_graph_legend(graph_desc_t *gdp, char *line)
2996 {
2997 int i;
2999 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3001 return (strlen(&line[i])==0);
3002 }
3005 int bad_format(char *fmt) {
3006 char *ptr;
3007 int n=0;
3009 ptr = fmt;
3010 while (*ptr != '\0') {
3011 if (*ptr == '%') {ptr++;
3012 if (*ptr == '\0') return 1;
3013 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3014 ptr++;
3015 }
3016 if (*ptr == '\0') return 1;
3017 if (*ptr == 'l') {
3018 ptr++;
3019 n++;
3020 if (*ptr == '\0') return 1;
3021 if (*ptr == 'e' || *ptr == 'f') {
3022 ptr++;
3023 } else { return 1; }
3024 }
3025 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3026 else { return 1; }
3027 } else {
3028 ++ptr;
3029 }
3030 }
3031 return (n!=1);
3032 }
3033 int
3034 vdef_parse(gdes,str)
3035 struct graph_desc_t *gdes;
3036 char *str;
3037 {
3038 /* A VDEF currently is either "func" or "param,func"
3039 * so the parsing is rather simple. Change if needed.
3040 */
3041 double param;
3042 char func[30];
3043 int n;
3045 n=0;
3046 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3047 if (n==strlen(str)) { /* matched */
3048 ;
3049 } else {
3050 n=0;
3051 sscanf(str,"%29[A-Z]%n",func,&n);
3052 if (n==strlen(str)) { /* matched */
3053 param=DNAN;
3054 } else {
3055 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3056 ,str
3057 ,gdes->vname
3058 );
3059 return -1;
3060 }
3061 }
3062 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3063 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3064 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3065 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3066 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3067 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3068 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3069 else {
3070 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3071 ,func
3072 ,gdes->vname
3073 );
3074 return -1;
3075 };
3077 switch (gdes->vf.op) {
3078 case VDEF_PERCENT:
3079 if (isnan(param)) { /* no parameter given */
3080 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3081 ,func
3082 ,gdes->vname
3083 );
3084 return -1;
3085 };
3086 if (param>=0.0 && param<=100.0) {
3087 gdes->vf.param = param;
3088 gdes->vf.val = DNAN; /* undefined */
3089 gdes->vf.when = 0; /* undefined */
3090 } else {
3091 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3092 ,param
3093 ,gdes->vname
3094 );
3095 return -1;
3096 };
3097 break;
3098 case VDEF_MAXIMUM:
3099 case VDEF_AVERAGE:
3100 case VDEF_MINIMUM:
3101 case VDEF_TOTAL:
3102 case VDEF_FIRST:
3103 case VDEF_LAST:
3104 if (isnan(param)) {
3105 gdes->vf.param = DNAN;
3106 gdes->vf.val = DNAN;
3107 gdes->vf.when = 0;
3108 } else {
3109 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3110 ,func
3111 ,gdes->vname
3112 );
3113 return -1;
3114 };
3115 break;
3116 };
3117 return 0;
3118 }
3119 int
3120 vdef_calc(im,gdi)
3121 image_desc_t *im;
3122 int gdi;
3123 {
3124 graph_desc_t *src,*dst;
3125 rrd_value_t *data;
3126 long step,steps;
3128 dst = &im->gdes[gdi];
3129 src = &im->gdes[dst->vidx];
3130 data = src->data + src->ds;
3131 steps = (src->end - src->start) / src->step;
3133 #if 0
3134 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3135 ,src->start
3136 ,src->end
3137 ,steps
3138 );
3139 #endif
3141 switch (dst->vf.op) {
3142 case VDEF_PERCENT: {
3143 rrd_value_t * array;
3144 int field;
3147 if ((array = malloc(steps*sizeof(double)))==NULL) {
3148 rrd_set_error("malloc VDEV_PERCENT");
3149 return -1;
3150 }
3151 for (step=0;step < steps; step++) {
3152 array[step]=data[step*src->ds_cnt];
3153 }
3154 qsort(array,step,sizeof(double),vdef_percent_compar);
3156 field = (steps-1)*dst->vf.param/100;
3157 dst->vf.val = array[field];
3158 dst->vf.when = 0; /* no time component */
3159 #if 0
3160 for(step=0;step<steps;step++)
3161 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3162 #endif
3163 }
3164 break;
3165 case VDEF_MAXIMUM:
3166 step=0;
3167 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3168 if (step == steps) {
3169 dst->vf.val = DNAN;
3170 dst->vf.when = 0;
3171 } else {
3172 dst->vf.val = data[step*src->ds_cnt];
3173 dst->vf.when = src->start + (step+1)*src->step;
3174 }
3175 while (step != steps) {
3176 if (finite(data[step*src->ds_cnt])) {
3177 if (data[step*src->ds_cnt] > dst->vf.val) {
3178 dst->vf.val = data[step*src->ds_cnt];
3179 dst->vf.when = src->start + (step+1)*src->step;
3180 }
3181 }
3182 step++;
3183 }
3184 break;
3185 case VDEF_TOTAL:
3186 case VDEF_AVERAGE: {
3187 int cnt=0;
3188 double sum=0.0;
3189 for (step=0;step<steps;step++) {
3190 if (finite(data[step*src->ds_cnt])) {
3191 sum += data[step*src->ds_cnt];
3192 cnt ++;
3193 };
3194 }
3195 if (cnt) {
3196 if (dst->vf.op == VDEF_TOTAL) {
3197 dst->vf.val = sum*src->step;
3198 dst->vf.when = cnt*src->step; /* not really "when" */
3199 } else {
3200 dst->vf.val = sum/cnt;
3201 dst->vf.when = 0; /* no time component */
3202 };
3203 } else {
3204 dst->vf.val = DNAN;
3205 dst->vf.when = 0;
3206 }
3207 }
3208 break;
3209 case VDEF_MINIMUM:
3210 step=0;
3211 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3212 if (step == steps) {
3213 dst->vf.val = DNAN;
3214 dst->vf.when = 0;
3215 } else {
3216 dst->vf.val = data[step*src->ds_cnt];
3217 dst->vf.when = src->start + (step+1)*src->step;
3218 }
3219 while (step != steps) {
3220 if (finite(data[step*src->ds_cnt])) {
3221 if (data[step*src->ds_cnt] < dst->vf.val) {
3222 dst->vf.val = data[step*src->ds_cnt];
3223 dst->vf.when = src->start + (step+1)*src->step;
3224 }
3225 }
3226 step++;
3227 }
3228 break;
3229 case VDEF_FIRST:
3230 /* The time value returned here is one step before the
3231 * actual time value. This is the start of the first
3232 * non-NaN interval.
3233 */
3234 step=0;
3235 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3236 if (step == steps) { /* all entries were NaN */
3237 dst->vf.val = DNAN;
3238 dst->vf.when = 0;
3239 } else {
3240 dst->vf.val = data[step*src->ds_cnt];
3241 dst->vf.when = src->start + step*src->step;
3242 }
3243 break;
3244 case VDEF_LAST:
3245 /* The time value returned here is the
3246 * actual time value. This is the end of the last
3247 * non-NaN interval.
3248 */
3249 step=steps-1;
3250 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3251 if (step < 0) { /* all entries were NaN */
3252 dst->vf.val = DNAN;
3253 dst->vf.when = 0;
3254 } else {
3255 dst->vf.val = data[step*src->ds_cnt];
3256 dst->vf.when = src->start + (step+1)*src->step;
3257 }
3258 break;
3259 }
3260 return 0;
3261 }
3263 /* NaN < -INF < finite_values < INF */
3264 int
3265 vdef_percent_compar(a,b)
3266 const void *a,*b;
3267 {
3268 /* Equality is not returned; this doesn't hurt except
3269 * (maybe) for a little performance.
3270 */
3272 /* First catch NaN values. They are smallest */
3273 if (isnan( *(double *)a )) return -1;
3274 if (isnan( *(double *)b )) return 1;
3276 /* NaN doesn't reach this part so INF and -INF are extremes.
3277 * The sign from isinf() is compatible with the sign we return
3278 */
3279 if (isinf( *(double *)a )) return isinf( *(double *)a );
3280 if (isinf( *(double *)b )) return isinf( *(double *)b );
3282 /* If we reach this, both values must be finite */
3283 if ( *(double *)a < *(double *)b ) return -1; else return 1;
3284 }