1 /****************************************************************************
2 * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
3 ****************************************************************************
4 * rrd__graph.c make creates ne rrds
5 ****************************************************************************/
25 #include "rrd_graph.h"
27 /* some constant definitions */
30 #ifndef RRD_DEFAULT_FONT
32 #define RRD_DEFAULT_FONT "c:/winnt/fonts/COUR.TTF"
34 #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf"
35 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
40 text_prop_t text_prop[] = {
41 { 10.0, RRD_DEFAULT_FONT }, /* default */
42 { 12.0, RRD_DEFAULT_FONT }, /* title */
43 { 8.0, RRD_DEFAULT_FONT }, /* axis */
44 { 10.0, RRD_DEFAULT_FONT }, /* unit */
45 { 10.0, RRD_DEFAULT_FONT } /* legend */
49 {0, TMT_SECOND,30, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
50 {2, TMT_MINUTE,1, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
51 {5, TMT_MINUTE,2, TMT_MINUTE,10, TMT_MINUTE,10, 0,"%H:%M"},
52 {10, TMT_MINUTE,5, TMT_MINUTE,20, TMT_MINUTE,20, 0,"%H:%M"},
53 {30, TMT_MINUTE,10, TMT_HOUR,1, TMT_HOUR,1, 0,"%H:%M"},
54 {60, TMT_MINUTE,30, TMT_HOUR,2, TMT_HOUR,2, 0,"%H:%M"},
55 {180, TMT_HOUR,1, TMT_HOUR,6, TMT_HOUR,6, 0,"%H:%M"},
56 /*{300, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly*/
57 {600, TMT_HOUR,6, TMT_DAY,1, TMT_DAY,1, 24*3600,"%a"},
58 {1800, TMT_HOUR,12, TMT_DAY,1, TMT_DAY,2, 24*3600,"%a"},
59 {3600, TMT_DAY,1, TMT_WEEK,1, TMT_WEEK,1, 7*24*3600,"Week %V"},
60 {3*3600, TMT_WEEK,1, TMT_MONTH,1, TMT_WEEK,2, 7*24*3600,"Week %V"},
61 {6*3600, TMT_MONTH,1, TMT_MONTH,1, TMT_MONTH,1, 30*24*3600,"%b"},
62 {48*3600, TMT_MONTH,1, TMT_MONTH,3, TMT_MONTH,3, 30*24*3600,"%b"},
63 {10*24*3600, TMT_YEAR,1, TMT_YEAR,1, TMT_YEAR,1, 365*24*3600,"%y"},
64 {-1,TMT_MONTH,0,TMT_MONTH,0,TMT_MONTH,0,0,""}
67 /* sensible logarithmic y label intervals ...
68 the first element of each row defines the possible starting points on the
69 y axis ... the other specify the */
71 double yloglab[][12]= {{ 1e9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
72 { 1e3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
73 { 1e1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
74 /* { 1e1, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, */
75 { 1e1, 1, 2.5, 5, 7.5, 0, 0, 0, 0, 0, 0, 0 },
76 { 1e1, 1, 2, 4, 6, 8, 0, 0, 0, 0, 0, 0 },
77 { 1e1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 },
78 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }};
80 /* sensible y label intervals ...*/
98 gfx_color_t graph_col[] = /* default colors */
99 { 0xFFFFFFFF, /* canvas */
100 0xF0F0F0FF, /* background */
101 0xD0D0D0FF, /* shade A */
102 0xA0A0A0FF, /* shade B */
103 0x909090FF, /* grid */
104 0xE05050FF, /* major grid */
105 0x000000FF, /* font */
106 0x000000FF, /* frame */
107 0xFF0000FF /* arrow */
114 # define DPRINT(x) (void)(printf x, printf("\n"))
120 /* initialize with xtr(im,0); */
122 xtr(image_desc_t *im,time_t mytime){
125 pixie = (double) im->xsize / (double)(im->end - im->start);
128 return (int)((double)im->xorigin
129 + pixie * ( mytime - im->start ) );
132 /* translate data values into y coordinates */
134 ytr(image_desc_t *im, double value){
139 pixie = (double) im->ysize / (im->maxval - im->minval);
141 pixie = (double) im->ysize / (log10(im->maxval) - log10(im->minval));
143 } else if(!im->logarithmic) {
144 yval = im->yorigin - pixie * (value - im->minval);
146 if (value < im->minval) {
149 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
152 /* make sure we don't return anything too unreasonable. GD lib can
153 get terribly slow when drawing lines outside its scope. This is
154 especially problematic in connection with the rigid option */
156 /* keep yval as-is */
157 } else if (yval > im->yorigin) {
158 yval = im->yorigin+2;
159 } else if (yval < im->yorigin - im->ysize){
160 yval = im->yorigin - im->ysize - 2;
167 /* conversion function for symbolic entry names */
170 #define conv_if(VV,VVV) \
171 if (strcmp(#VV, string) == 0) return VVV ;
173 enum gf_en gf_conv(char *string){
175 conv_if(PRINT,GF_PRINT)
176 conv_if(GPRINT,GF_GPRINT)
177 conv_if(COMMENT,GF_COMMENT)
178 conv_if(HRULE,GF_HRULE)
179 conv_if(VRULE,GF_VRULE)
180 conv_if(LINE,GF_LINE)
181 conv_if(AREA,GF_AREA)
182 conv_if(STACK,GF_STACK)
183 conv_if(TICK,GF_TICK)
185 conv_if(CDEF,GF_CDEF)
186 conv_if(VDEF,GF_VDEF)
187 conv_if(PART,GF_PART)
188 conv_if(XPORT,GF_XPORT)
193 enum gfx_if_en if_conv(char *string){
203 enum tmt_en tmt_conv(char *string){
205 conv_if(SECOND,TMT_SECOND)
206 conv_if(MINUTE,TMT_MINUTE)
207 conv_if(HOUR,TMT_HOUR)
209 conv_if(WEEK,TMT_WEEK)
210 conv_if(MONTH,TMT_MONTH)
211 conv_if(YEAR,TMT_YEAR)
215 enum grc_en grc_conv(char *string){
217 conv_if(BACK,GRC_BACK)
218 conv_if(CANVAS,GRC_CANVAS)
219 conv_if(SHADEA,GRC_SHADEA)
220 conv_if(SHADEB,GRC_SHADEB)
221 conv_if(GRID,GRC_GRID)
222 conv_if(MGRID,GRC_MGRID)
223 conv_if(FONT,GRC_FONT)
224 conv_if(FRAME,GRC_FRAME)
225 conv_if(ARROW,GRC_ARROW)
230 enum text_prop_en text_prop_conv(char *string){
232 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
233 conv_if(TITLE,TEXT_PROP_TITLE)
234 conv_if(AXIS,TEXT_PROP_AXIS)
235 conv_if(UNIT,TEXT_PROP_UNIT)
236 conv_if(LEGEND,TEXT_PROP_LEGEND)
244 im_free(image_desc_t *im)
248 if (im == NULL) return 0;
249 for(i=0;i<(unsigned)im->gdes_c;i++){
250 if (im->gdes[i].data_first){
251 /* careful here, because a single pointer can occur several times */
252 free (im->gdes[i].data);
253 if (im->gdes[i].ds_namv){
254 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
255 free(im->gdes[i].ds_namv[ii]);
256 free(im->gdes[i].ds_namv);
259 free (im->gdes[i].p_data);
260 free (im->gdes[i].rpnp);
263 gfx_destroy(im->canvas);
267 /* find SI magnitude symbol for the given number*/
270 image_desc_t *im, /* image description */
277 char *symbol[] = {"a", /* 10e-18 Atto */
278 "f", /* 10e-15 Femto */
279 "p", /* 10e-12 Pico */
280 "n", /* 10e-9 Nano */
281 "u", /* 10e-6 Micro */
282 "m", /* 10e-3 Milli */
287 "T", /* 10e12 Tera */
288 "P", /* 10e15 Peta */
294 if (*value == 0.0 || isnan(*value) ) {
298 sindex = floor(log(fabs(*value))/log((double)im->base));
299 *magfact = pow((double)im->base, (double)sindex);
300 (*value) /= (*magfact);
302 if ( sindex <= symbcenter && sindex >= -symbcenter) {
303 (*symb_ptr) = symbol[sindex+symbcenter];
311 /* find SI magnitude symbol for the numbers on the y-axis*/
314 image_desc_t *im /* image description */
318 char symbol[] = {'a', /* 10e-18 Atto */
319 'f', /* 10e-15 Femto */
320 'p', /* 10e-12 Pico */
321 'n', /* 10e-9 Nano */
322 'u', /* 10e-6 Micro */
323 'm', /* 10e-3 Milli */
328 'T', /* 10e12 Tera */
329 'P', /* 10e15 Peta */
335 if (im->unitsexponent != 9999) {
336 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
337 digits = floor(im->unitsexponent / 3);
339 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
341 im->magfact = pow((double)im->base , digits);
344 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
347 if ( ((digits+symbcenter) < sizeof(symbol)) &&
348 ((digits+symbcenter) >= 0) )
349 im->symbol = symbol[(int)digits+symbcenter];
354 /* move min and max values around to become sensible */
357 expand_range(image_desc_t *im)
359 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
360 600.0,500.0,400.0,300.0,250.0,
361 200.0,125.0,100.0,90.0,80.0,
362 75.0,70.0,60.0,50.0,40.0,30.0,
363 25.0,20.0,10.0,9.0,8.0,
364 7.0,6.0,5.0,4.0,3.5,3.0,
365 2.5,2.0,1.8,1.5,1.2,1.0,
366 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
368 double scaled_min,scaled_max;
375 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
376 im->minval,im->maxval,im->magfact);
379 if (isnan(im->ygridstep)){
380 if(im->extra_flags & ALTAUTOSCALE) {
381 /* measure the amplitude of the function. Make sure that
382 graph boundaries are slightly higher then max/min vals
383 so we can see amplitude on the graph */
386 delt = im->maxval - im->minval;
388 fact = 2.0 * pow(10.0,
389 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
391 adj = (fact - delt) * 0.55;
393 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
399 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
400 /* measure the amplitude of the function. Make sure that
401 graph boundaries are slightly higher than max vals
402 so we can see amplitude on the graph */
403 adj = (im->maxval - im->minval) * 0.1;
407 scaled_min = im->minval / im->magfact;
408 scaled_max = im->maxval / im->magfact;
410 for (i=1; sensiblevalues[i] > 0; i++){
411 if (sensiblevalues[i-1]>=scaled_min &&
412 sensiblevalues[i]<=scaled_min)
413 im->minval = sensiblevalues[i]*(im->magfact);
415 if (-sensiblevalues[i-1]<=scaled_min &&
416 -sensiblevalues[i]>=scaled_min)
417 im->minval = -sensiblevalues[i-1]*(im->magfact);
419 if (sensiblevalues[i-1] >= scaled_max &&
420 sensiblevalues[i] <= scaled_max)
421 im->maxval = sensiblevalues[i-1]*(im->magfact);
423 if (-sensiblevalues[i-1]<=scaled_max &&
424 -sensiblevalues[i] >=scaled_max)
425 im->maxval = -sensiblevalues[i]*(im->magfact);
429 /* adjust min and max to the grid definition if there is one */
430 im->minval = (double)im->ylabfact * im->ygridstep *
431 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
432 im->maxval = (double)im->ylabfact * im->ygridstep *
433 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
437 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
438 im->minval,im->maxval,im->magfact);
443 apply_gridfit(image_desc_t *im)
445 if (isnan(im->minval) || isnan(im->maxval))
448 if (im->logarithmic) {
449 double ya, yb, ypix, ypixfrac;
450 double log10_range = log10(im->maxval) - log10(im->minval);
451 ya = pow((double)10, floor(log10(im->minval)));
452 while (ya < im->minval)
455 return; /* don't have y=10^x gridline */
457 if (yb <= im->maxval) {
458 /* we have at least 2 y=10^x gridlines.
459 Make sure distance between them in pixels
460 are an integer by expanding im->maxval */
461 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
462 double factor = y_pixel_delta / floor(y_pixel_delta);
463 double new_log10_range = factor * log10_range;
464 double new_ymax_log10 = log10(im->minval) + new_log10_range;
465 im->maxval = pow(10, new_ymax_log10);
466 ytr(im, DNAN); /* reset precalc */
467 log10_range = log10(im->maxval) - log10(im->minval);
469 /* make sure first y=10^x gridline is located on
470 integer pixel position by moving scale slightly
471 downwards (sub-pixel movement) */
472 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
473 ypixfrac = ypix - floor(ypix);
474 if (ypixfrac > 0 && ypixfrac < 1) {
475 double yfrac = ypixfrac / im->ysize;
476 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
477 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
478 ytr(im, DNAN); /* reset precalc */
481 /* Make sure we have an integer pixel distance between
482 each minor gridline */
483 double ypos1 = ytr(im, im->minval);
484 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
485 double y_pixel_delta = ypos1 - ypos2;
486 double factor = y_pixel_delta / floor(y_pixel_delta);
487 double new_range = factor * (im->maxval - im->minval);
488 double gridstep = im->ygrid_scale.gridstep;
489 double minor_y, minor_y_px, minor_y_px_frac;
490 im->maxval = im->minval + new_range;
491 ytr(im, DNAN); /* reset precalc */
492 /* make sure first minor gridline is on integer pixel y coord */
493 minor_y = gridstep * floor(im->minval / gridstep);
494 while (minor_y < im->minval)
496 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
497 minor_y_px_frac = minor_y_px - floor(minor_y_px);
498 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
499 double yfrac = minor_y_px_frac / im->ysize;
500 double range = im->maxval - im->minval;
501 im->minval = im->minval - yfrac * range;
502 im->maxval = im->maxval - yfrac * range;
503 ytr(im, DNAN); /* reset precalc */
505 calc_horizontal_grid(im); /* recalc with changed im->maxval */
509 /* reduce data reimplementation by Alex */
513 enum cf_en cf, /* which consolidation function ?*/
514 unsigned long cur_step, /* step the data currently is in */
515 time_t *start, /* start, end and step as requested ... */
516 time_t *end, /* ... by the application will be ... */
517 unsigned long *step, /* ... adjusted to represent reality */
518 unsigned long *ds_cnt, /* number of data sources in file */
519 rrd_value_t **data) /* two dimensional array containing the data */
521 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
522 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
523 rrd_value_t *srcptr,*dstptr;
525 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
528 row_cnt = ((*end)-(*start))/cur_step;
534 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
535 row_cnt,reduce_factor,*start,*end,cur_step);
536 for (col=0;col<row_cnt;col++) {
537 printf("time %10lu: ",*start+(col+1)*cur_step);
538 for (i=0;i<*ds_cnt;i++)
539 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
544 /* We have to combine [reduce_factor] rows of the source
545 ** into one row for the destination. Doing this we also
546 ** need to take care to combine the correct rows. First
547 ** alter the start and end time so that they are multiples
548 ** of the new step time. We cannot reduce the amount of
549 ** time so we have to move the end towards the future and
550 ** the start towards the past.
552 end_offset = (*end) % (*step);
553 start_offset = (*start) % (*step);
555 /* If there is a start offset (which cannot be more than
556 ** one destination row), skip the appropriate number of
557 ** source rows and one destination row. The appropriate
558 ** number is what we do know (start_offset/cur_step) of
559 ** the new interval (*step/cur_step aka reduce_factor).
562 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
563 printf("row_cnt before: %lu\n",row_cnt);
566 (*start) = (*start)-start_offset;
567 skiprows=reduce_factor-start_offset/cur_step;
568 srcptr+=skiprows* *ds_cnt;
569 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
573 printf("row_cnt between: %lu\n",row_cnt);
576 /* At the end we have some rows that are not going to be
577 ** used, the amount is end_offset/cur_step
580 (*end) = (*end)-end_offset+(*step);
581 skiprows = end_offset/cur_step;
585 printf("row_cnt after: %lu\n",row_cnt);
588 /* Sanity check: row_cnt should be multiple of reduce_factor */
589 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
591 if (row_cnt%reduce_factor) {
592 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
593 row_cnt,reduce_factor);
594 printf("BUG in reduce_data()\n");
598 /* Now combine reduce_factor intervals at a time
599 ** into one interval for the destination.
602 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
603 for (col=0;col<(*ds_cnt);col++) {
604 rrd_value_t newval=DNAN;
605 unsigned long validval=0;
607 for (i=0;i<reduce_factor;i++) {
608 if (isnan(srcptr[i*(*ds_cnt)+col])) {
612 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
620 newval += srcptr[i*(*ds_cnt)+col];
623 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
626 /* an interval contains a failure if any subintervals contained a failure */
628 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
631 newval = srcptr[i*(*ds_cnt)+col];
636 if (validval == 0){newval = DNAN;} else{
654 srcptr+=(*ds_cnt)*reduce_factor;
655 row_cnt-=reduce_factor;
657 /* If we had to alter the endtime, we didn't have enough
658 ** source rows to fill the last row. Fill it with NaN.
660 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
662 row_cnt = ((*end)-(*start))/ *step;
664 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
665 row_cnt,*start,*end,*step);
666 for (col=0;col<row_cnt;col++) {
667 printf("time %10lu: ",*start+(col+1)*(*step));
668 for (i=0;i<*ds_cnt;i++)
669 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
676 /* get the data required for the graphs from the
680 data_fetch(image_desc_t *im )
685 /* pull the data from the log files ... */
686 for (i=0;i<im->gdes_c;i++){
687 /* only GF_DEF elements fetch data */
688 if (im->gdes[i].gf != GF_DEF)
692 /* do we have it already ?*/
693 for (ii=0;ii<i;ii++) {
694 if (im->gdes[ii].gf != GF_DEF)
696 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
697 && (im->gdes[i].cf == im->gdes[ii].cf)
698 && (im->gdes[i].start == im->gdes[ii].start)
699 && (im->gdes[i].end == im->gdes[ii].end)
700 && (im->gdes[i].step == im->gdes[ii].step)) {
701 /* OK, the data is already there.
702 ** Just copy the header portion
704 im->gdes[i].start = im->gdes[ii].start;
705 im->gdes[i].end = im->gdes[ii].end;
706 im->gdes[i].step = im->gdes[ii].step;
707 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
708 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
709 im->gdes[i].data = im->gdes[ii].data;
710 im->gdes[i].data_first = 0;
717 unsigned long ft_step = im->gdes[i].step ;
719 if((rrd_fetch_fn(im->gdes[i].rrd,
725 &im->gdes[i].ds_namv,
726 &im->gdes[i].data)) == -1){
729 im->gdes[i].data_first = 1;
731 if (ft_step < im->gdes[i].step) {
732 reduce_data(im->gdes[i].cf,
740 im->gdes[i].step = ft_step;
744 /* lets see if the required data source is realy there */
745 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
746 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
749 if (im->gdes[i].ds== -1){
750 rrd_set_error("No DS called '%s' in '%s'",
751 im->gdes[i].ds_nam,im->gdes[i].rrd);
759 /* evaluate the expressions in the CDEF functions */
761 /*************************************************************
763 *************************************************************/
766 find_var_wrapper(void *arg1, char *key)
768 return find_var((image_desc_t *) arg1, key);
771 /* find gdes containing var*/
773 find_var(image_desc_t *im, char *key){
775 for(ii=0;ii<im->gdes_c-1;ii++){
776 if((im->gdes[ii].gf == GF_DEF
777 || im->gdes[ii].gf == GF_VDEF
778 || im->gdes[ii].gf == GF_CDEF)
779 && (strcmp(im->gdes[ii].vname,key) == 0)){
786 /* find the largest common denominator for all the numbers
787 in the 0 terminated num array */
792 for (i=0;num[i+1]!=0;i++){
794 rest=num[i] % num[i+1];
795 num[i]=num[i+1]; num[i+1]=rest;
799 /* return i==0?num[i]:num[i-1]; */
803 /* run the rpn calculator on all the VDEF and CDEF arguments */
805 data_calc( image_desc_t *im){
809 long *steparray, rpi;
814 rpnstack_init(&rpnstack);
816 for (gdi=0;gdi<im->gdes_c;gdi++){
817 /* Look for GF_VDEF and GF_CDEF in the same loop,
818 * so CDEFs can use VDEFs and vice versa
820 switch (im->gdes[gdi].gf) {
824 /* A VDEF has no DS. This also signals other parts
825 * of rrdtool that this is a VDEF value, not a CDEF.
827 im->gdes[gdi].ds_cnt = 0;
828 if (vdef_calc(im,gdi)) {
829 rrd_set_error("Error processing VDEF '%s'"
832 rpnstack_free(&rpnstack);
837 im->gdes[gdi].ds_cnt = 1;
838 im->gdes[gdi].ds = 0;
839 im->gdes[gdi].data_first = 1;
840 im->gdes[gdi].start = 0;
841 im->gdes[gdi].end = 0;
846 /* Find the variables in the expression.
847 * - VDEF variables are substituted by their values
848 * and the opcode is changed into OP_NUMBER.
849 * - CDEF variables are analized for their step size,
850 * the lowest common denominator of all the step
851 * sizes of the data sources involved is calculated
852 * and the resulting number is the step size for the
853 * resulting data source.
855 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
856 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
857 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
858 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
859 if (im->gdes[ptr].ds_cnt == 0) {
861 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
863 im->gdes[ptr].vname);
864 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
866 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
867 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
870 rrd_realloc(steparray,
871 (++stepcnt+1)*sizeof(*steparray)))==NULL){
872 rrd_set_error("realloc steparray");
873 rpnstack_free(&rpnstack);
877 steparray[stepcnt-1] = im->gdes[ptr].step;
879 /* adjust start and end of cdef (gdi) so
880 * that it runs from the latest start point
881 * to the earliest endpoint of any of the
882 * rras involved (ptr)
884 if(im->gdes[gdi].start < im->gdes[ptr].start)
885 im->gdes[gdi].start = im->gdes[ptr].start;
887 if(im->gdes[gdi].end == 0 ||
888 im->gdes[gdi].end > im->gdes[ptr].end)
889 im->gdes[gdi].end = im->gdes[ptr].end;
891 /* store pointer to the first element of
892 * the rra providing data for variable,
893 * further save step size and data source
896 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
897 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
898 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
900 /* backoff the *.data ptr; this is done so
901 * rpncalc() function doesn't have to treat
902 * the first case differently
904 } /* if ds_cnt != 0 */
905 } /* if OP_VARIABLE */
906 } /* loop through all rpi */
908 /* move the data pointers to the correct period */
909 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
910 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
911 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
912 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
913 if(im->gdes[gdi].start > im->gdes[ptr].start) {
914 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
920 if(steparray == NULL){
921 rrd_set_error("rpn expressions without DEF"
922 " or CDEF variables are not supported");
923 rpnstack_free(&rpnstack);
926 steparray[stepcnt]=0;
927 /* Now find the resulting step. All steps in all
928 * used RRAs have to be visited
930 im->gdes[gdi].step = lcd(steparray);
932 if((im->gdes[gdi].data = malloc((
933 (im->gdes[gdi].end-im->gdes[gdi].start)
934 / im->gdes[gdi].step)
935 * sizeof(double)))==NULL){
936 rrd_set_error("malloc im->gdes[gdi].data");
937 rpnstack_free(&rpnstack);
941 /* Step through the new cdef results array and
942 * calculate the values
944 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
945 now<=im->gdes[gdi].end;
946 now += im->gdes[gdi].step)
948 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
950 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
951 * in this case we are advancing by timesteps;
952 * we use the fact that time_t is a synonym for long
954 if (rpn_calc(rpnp,&rpnstack,(long) now,
955 im->gdes[gdi].data,++dataidx) == -1) {
956 /* rpn_calc sets the error string */
957 rpnstack_free(&rpnstack);
960 } /* enumerate over time steps within a CDEF */
965 } /* enumerate over CDEFs */
966 rpnstack_free(&rpnstack);
970 /* massage data so, that we get one value for each x coordinate in the graph */
972 data_proc( image_desc_t *im ){
974 double pixstep = (double)(im->end-im->start)
975 /(double)im->xsize; /* how much time
976 passes in one pixel */
978 double minval=DNAN,maxval=DNAN;
980 unsigned long gr_time;
982 /* memory for the processed data */
983 for(i=0;i<im->gdes_c;i++) {
984 if((im->gdes[i].gf==GF_LINE) ||
985 (im->gdes[i].gf==GF_AREA) ||
986 (im->gdes[i].gf==GF_TICK) ||
987 (im->gdes[i].gf==GF_STACK)) {
988 if((im->gdes[i].p_data = malloc((im->xsize +1)
989 * sizeof(rrd_value_t)))==NULL){
990 rrd_set_error("malloc data_proc");
996 for (i=0;i<im->xsize;i++) { /* for each pixel */
998 gr_time = im->start+pixstep*i; /* time of the current step */
1001 for (ii=0;ii<im->gdes_c;ii++) {
1003 switch (im->gdes[ii].gf) {
1007 if (!im->gdes[ii].stack)
1010 value = im->gdes[ii].yrule;
1011 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1012 /* The time of the data doesn't necessarily match
1013 ** the time of the graph. Beware.
1015 vidx = im->gdes[ii].vidx;
1016 if ( (gr_time >= im->gdes[vidx].start) &&
1017 (gr_time <= im->gdes[vidx].end) ) {
1018 value = im->gdes[vidx].data[
1019 (unsigned long) floor(
1020 (double)(gr_time - im->gdes[vidx].start)
1021 / im->gdes[vidx].step)
1022 * im->gdes[vidx].ds_cnt
1030 if (! isnan(value)) {
1032 im->gdes[ii].p_data[i] = paintval;
1033 /* GF_TICK: the data values are not
1034 ** relevant for min and max
1036 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ) {
1037 if (isnan(minval) || paintval < minval)
1039 if (isnan(maxval) || paintval > maxval)
1043 im->gdes[ii].p_data[i] = DNAN;
1052 /* if min or max have not been asigned a value this is because
1053 there was no data in the graph ... this is not good ...
1054 lets set these to dummy values then ... */
1056 if (isnan(minval)) minval = 0.0;
1057 if (isnan(maxval)) maxval = 1.0;
1059 /* adjust min and max values */
1060 if (isnan(im->minval)
1061 /* don't adjust low-end with log scale */
1062 || ((!im->logarithmic && !im->rigid) && im->minval > minval)
1064 im->minval = minval;
1065 if (isnan(im->maxval)
1066 || (!im->rigid && im->maxval < maxval)
1068 if (im->logarithmic)
1069 im->maxval = maxval * 1.1;
1071 im->maxval = maxval;
1073 /* make sure min and max are not equal */
1074 if (im->minval == im->maxval) {
1076 if (! im->logarithmic) {
1079 /* make sure min and max are not both zero */
1080 if (im->maxval == 0.0) {
1089 /* identify the point where the first gridline, label ... gets placed */
1093 time_t start, /* what is the initial time */
1094 enum tmt_en baseint, /* what is the basic interval */
1095 long basestep /* how many if these do we jump a time */
1099 localtime_r(&start, &tm);
1102 tm.tm_sec -= tm.tm_sec % basestep; break;
1105 tm.tm_min -= tm.tm_min % basestep;
1110 tm.tm_hour -= tm.tm_hour % basestep; break;
1112 /* we do NOT look at the basestep for this ... */
1115 tm.tm_hour = 0; break;
1117 /* we do NOT look at the basestep for this ... */
1121 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1122 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1129 tm.tm_mon -= tm.tm_mon % basestep; break;
1137 tm.tm_year -= (tm.tm_year+1900) % basestep;
1142 /* identify the point where the next gridline, label ... gets placed */
1145 time_t current, /* what is the initial time */
1146 enum tmt_en baseint, /* what is the basic interval */
1147 long basestep /* how many if these do we jump a time */
1152 localtime_r(¤t, &tm);
1156 tm.tm_sec += basestep; break;
1158 tm.tm_min += basestep; break;
1160 tm.tm_hour += basestep; break;
1162 tm.tm_mday += basestep; break;
1164 tm.tm_mday += 7*basestep; break;
1166 tm.tm_mon += basestep; break;
1168 tm.tm_year += basestep;
1170 madetime = mktime(&tm);
1171 } while (madetime == -1); /* this is necessary to skip impssible times
1172 like the daylight saving time skips */
1178 /* calculate values required for PRINT and GPRINT functions */
1181 print_calc(image_desc_t *im, char ***prdata)
1183 long i,ii,validsteps;
1186 int graphelement = 0;
1189 double magfact = -1;
1193 if (im->imginfo) prlines++;
1194 for(i=0;i<im->gdes_c;i++){
1195 switch(im->gdes[i].gf){
1198 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1199 rrd_set_error("realloc prdata");
1203 /* PRINT and GPRINT can now print VDEF generated values.
1204 * There's no need to do any calculations on them as these
1205 * calculations were already made.
1207 vidx = im->gdes[i].vidx;
1208 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1209 printval = im->gdes[vidx].vf.val;
1210 printtime = im->gdes[vidx].vf.when;
1211 } else { /* need to calculate max,min,avg etcetera */
1212 max_ii =((im->gdes[vidx].end
1213 - im->gdes[vidx].start)
1214 / im->gdes[vidx].step
1215 * im->gdes[vidx].ds_cnt);
1218 for( ii=im->gdes[vidx].ds;
1220 ii+=im->gdes[vidx].ds_cnt){
1221 if (! finite(im->gdes[vidx].data[ii]))
1223 if (isnan(printval)){
1224 printval = im->gdes[vidx].data[ii];
1229 switch (im->gdes[i].cf){
1232 case CF_DEVSEASONAL:
1236 printval += im->gdes[vidx].data[ii];
1239 printval = min( printval, im->gdes[vidx].data[ii]);
1243 printval = max( printval, im->gdes[vidx].data[ii]);
1246 printval = im->gdes[vidx].data[ii];
1249 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1250 if (validsteps > 1) {
1251 printval = (printval / validsteps);
1254 } /* prepare printval */
1256 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1257 char ctime_buf[128]; /* PS: for ctime_r, must be >= 26 chars */
1258 if (im->gdes[i].gf == GF_PRINT){
1259 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1260 sprintf((*prdata)[prlines-2],"%s (%lu)",
1261 ctime_r(&printtime,ctime_buf),printtime);
1262 (*prdata)[prlines-1] = NULL;
1264 sprintf(im->gdes[i].legend,"%s (%lu)",
1265 ctime_r(&printtime,ctime_buf),printtime);
1269 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1270 /* Magfact is set to -1 upon entry to print_calc. If it
1271 * is still less than 0, then we need to run auto_scale.
1272 * Otherwise, put the value into the correct units. If
1273 * the value is 0, then do not set the symbol or magnification
1274 * so next the calculation will be performed again. */
1275 if (magfact < 0.0) {
1276 auto_scale(im,&printval,&si_symb,&magfact);
1277 if (printval == 0.0)
1280 printval /= magfact;
1282 *(++percent_s) = 's';
1283 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1284 auto_scale(im,&printval,&si_symb,&magfact);
1287 if (im->gdes[i].gf == GF_PRINT){
1288 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1289 (*prdata)[prlines-1] = NULL;
1290 if (bad_format(im->gdes[i].format)) {
1291 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1294 #ifdef HAVE_SNPRINTF
1295 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1297 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1302 if (bad_format(im->gdes[i].format)) {
1303 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1306 #ifdef HAVE_SNPRINTF
1307 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1309 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1332 return graphelement;
1336 /* place legends with color spots */
1338 leg_place(image_desc_t *im)
1341 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1342 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1343 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1344 int fill=0, fill_last;
1346 int leg_x = border, leg_y = im->yimg;
1350 char prt_fctn; /*special printfunctions */
1353 if( !(im->extra_flags & NOLEGEND) ) {
1354 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1355 rrd_set_error("malloc for legspace");
1359 for(i=0;i<im->gdes_c;i++){
1362 /* hid legends for rules which are not displayed */
1364 if (im->gdes[i].gf == GF_HRULE &&
1365 (im->gdes[i].yrule < im->minval || im->gdes[i].yrule > im->maxval))
1366 im->gdes[i].legend[0] = '\0';
1368 if (im->gdes[i].gf == GF_VRULE &&
1369 (im->gdes[i].xrule < im->start || im->gdes[i].xrule > im->end))
1370 im->gdes[i].legend[0] = '\0';
1372 leg_cc = strlen(im->gdes[i].legend);
1374 /* is there a controle code ant the end of the legend string ? */
1375 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1376 prt_fctn = im->gdes[i].legend[leg_cc-1];
1378 im->gdes[i].legend[leg_cc] = '\0';
1382 /* remove exess space */
1383 while (prt_fctn=='g' &&
1385 im->gdes[i].legend[leg_cc-1]==' '){
1387 im->gdes[i].legend[leg_cc]='\0';
1390 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1393 /* no interleg space if string ends in \g */
1394 fill += legspace[i];
1396 if (im->gdes[i].gf != GF_GPRINT &&
1397 im->gdes[i].gf != GF_COMMENT) {
1400 fill += gfx_get_text_width(im->canvas, fill+border,
1401 im->text_prop[TEXT_PROP_LEGEND].font,
1402 im->text_prop[TEXT_PROP_LEGEND].size,
1404 im->gdes[i].legend);
1409 /* who said there was a special tag ... ?*/
1410 if (prt_fctn=='g') {
1413 if (prt_fctn == '\0') {
1414 if (i == im->gdes_c -1 ) prt_fctn ='l';
1416 /* is it time to place the legends ? */
1417 if (fill > im->ximg - 2*border){
1432 if (prt_fctn != '\0'){
1434 if (leg_c >= 2 && prt_fctn == 'j') {
1435 glue = (im->ximg - fill - 2* border) / (leg_c-1);
1439 if (prt_fctn =='c') leg_x = (im->ximg - fill) / 2.0;
1440 if (prt_fctn =='r') leg_x = im->ximg - fill - border;
1442 for(ii=mark;ii<=i;ii++){
1443 if(im->gdes[ii].legend[0]=='\0')
1445 im->gdes[ii].leg_x = leg_x;
1446 im->gdes[ii].leg_y = leg_y;
1448 gfx_get_text_width(im->canvas, leg_x,
1449 im->text_prop[TEXT_PROP_LEGEND].font,
1450 im->text_prop[TEXT_PROP_LEGEND].size,
1452 im->gdes[ii].legend)
1455 if (im->gdes[ii].gf != GF_GPRINT &&
1456 im->gdes[ii].gf != GF_COMMENT)
1459 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1460 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1472 /* create a grid on the graph. it determines what to do
1473 from the values of xsize, start and end */
1475 /* the xaxis labels are determined from the number of seconds per pixel
1476 in the requested graph */
1481 calc_horizontal_grid(image_desc_t *im)
1487 int decimals, fractionals;
1489 im->ygrid_scale.labfact=2;
1491 range = im->maxval - im->minval;
1492 scaledrange = range / im->magfact;
1494 /* does the scale of this graph make it impossible to put lines
1495 on it? If so, give up. */
1496 if (isnan(scaledrange)) {
1500 /* find grid spaceing */
1502 if(isnan(im->ygridstep)){
1503 if(im->extra_flags & ALTYGRID) {
1504 /* find the value with max number of digits. Get number of digits */
1505 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1506 if(decimals <= 0) /* everything is small. make place for zero */
1509 fractionals = floor(log10(range));
1510 if(fractionals < 0) /* small amplitude. */
1511 sprintf(im->ygrid_scale.labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1513 sprintf(im->ygrid_scale.labfmt, "%%%d.1f", decimals + 1);
1514 im->ygrid_scale.gridstep = pow((double)10, (double)fractionals);
1515 if(im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1516 im->ygrid_scale.gridstep = 0.1;
1517 /* should have at least 5 lines but no more then 15 */
1518 if(range/im->ygrid_scale.gridstep < 5)
1519 im->ygrid_scale.gridstep /= 10;
1520 if(range/im->ygrid_scale.gridstep > 15)
1521 im->ygrid_scale.gridstep *= 10;
1522 if(range/im->ygrid_scale.gridstep > 5) {
1523 im->ygrid_scale.labfact = 1;
1524 if(range/im->ygrid_scale.gridstep > 8)
1525 im->ygrid_scale.labfact = 2;
1528 im->ygrid_scale.gridstep /= 5;
1529 im->ygrid_scale.labfact = 5;
1533 for(i=0;ylab[i].grid > 0;i++){
1534 pixel = im->ysize / (scaledrange / ylab[i].grid);
1535 if (gridind == -1 && pixel > 5) {
1542 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1543 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
1548 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
1551 im->ygrid_scale.gridstep = im->ygridstep;
1552 im->ygrid_scale.labfact = im->ylabfact;
1557 int draw_horizontal_grid(image_desc_t *im)
1561 char graph_label[100];
1562 double X0=im->xorigin;
1563 double X1=im->xorigin+im->xsize;
1565 int sgrid = (int)( im->minval / im->ygrid_scale.gridstep - 1);
1566 int egrid = (int)( im->maxval / im->ygrid_scale.gridstep + 1);
1567 scaledstep = im->ygrid_scale.gridstep/im->magfact;
1568 for (i = sgrid; i <= egrid; i++){
1569 double Y0=ytr(im,im->ygrid_scale.gridstep*i);
1570 if ( Y0 >= im->yorigin-im->ysize
1571 && Y0 <= im->yorigin){
1572 if(i % im->ygrid_scale.labfact == 0){
1573 if (i==0 || im->symbol == ' ') {
1575 if(im->extra_flags & ALTYGRID) {
1576 sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*i);
1579 sprintf(graph_label,"%4.1f",scaledstep*i);
1582 sprintf(graph_label,"%4.0f",scaledstep*i);
1586 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1588 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1592 gfx_new_text ( im->canvas,
1593 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1594 im->graph_col[GRC_FONT],
1595 im->text_prop[TEXT_PROP_AXIS].font,
1596 im->text_prop[TEXT_PROP_AXIS].size,
1597 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1599 gfx_new_dashed_line ( im->canvas,
1602 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1603 im->grid_dash_on, im->grid_dash_off);
1605 } else if (!(im->extra_flags & NOMINOR)) {
1606 gfx_new_dashed_line ( im->canvas,
1609 GRIDWIDTH, im->graph_col[GRC_GRID],
1610 im->grid_dash_on, im->grid_dash_off);
1618 /* logaritmic horizontal grid */
1620 horizontal_log_grid(image_desc_t *im)
1624 int minoridx=0, majoridx=0;
1625 char graph_label[100];
1627 double value, pixperstep, minstep;
1629 /* find grid spaceing */
1630 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1632 if (isnan(pixpex)) {
1636 for(i=0;yloglab[i][0] > 0;i++){
1637 minstep = log10(yloglab[i][0]);
1638 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1639 if(yloglab[i][ii+2]==0){
1640 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1644 pixperstep = pixpex * minstep;
1645 if(pixperstep > 5){minoridx = i;}
1646 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1650 X1=im->xorigin+im->xsize;
1651 /* paint minor grid */
1652 for (value = pow((double)10, log10(im->minval)
1653 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1654 value <= im->maxval;
1655 value *= yloglab[minoridx][0]){
1656 if (value < im->minval) continue;
1658 while(yloglab[minoridx][++i] > 0){
1659 Y0 = ytr(im,value * yloglab[minoridx][i]);
1660 if (Y0 <= im->yorigin - im->ysize) break;
1661 gfx_new_dashed_line ( im->canvas,
1664 GRIDWIDTH, im->graph_col[GRC_GRID],
1665 im->grid_dash_on, im->grid_dash_off);
1669 /* paint major grid and labels*/
1670 for (value = pow((double)10, log10(im->minval)
1671 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1672 value <= im->maxval;
1673 value *= yloglab[majoridx][0]){
1674 if (value < im->minval) continue;
1676 while(yloglab[majoridx][++i] > 0){
1677 Y0 = ytr(im,value * yloglab[majoridx][i]);
1678 if (Y0 <= im->yorigin - im->ysize) break;
1679 gfx_new_dashed_line ( im->canvas,
1682 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1683 im->grid_dash_on, im->grid_dash_off);
1685 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1686 gfx_new_text ( im->canvas,
1687 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1688 im->graph_col[GRC_FONT],
1689 im->text_prop[TEXT_PROP_AXIS].font,
1690 im->text_prop[TEXT_PROP_AXIS].size,
1691 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1703 int xlab_sel; /* which sort of label and grid ? */
1704 time_t ti, tilab, timajor;
1706 char graph_label[100];
1707 double X0,Y0,Y1; /* points for filled graph and more*/
1710 /* the type of time grid is determined by finding
1711 the number of seconds per pixel in the graph */
1714 if(im->xlab_user.minsec == -1){
1715 factor=(im->end - im->start)/im->xsize;
1717 while ( xlab[xlab_sel+1].minsec != -1
1718 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1719 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1720 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1721 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1722 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1723 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1724 im->xlab_user.labst = xlab[xlab_sel].labst;
1725 im->xlab_user.precis = xlab[xlab_sel].precis;
1726 im->xlab_user.stst = xlab[xlab_sel].stst;
1729 /* y coords are the same for every line ... */
1731 Y1 = im->yorigin-im->ysize;
1734 /* paint the minor grid */
1735 if (!(im->extra_flags & NOMINOR))
1737 for(ti = find_first_time(im->start,
1738 im->xlab_user.gridtm,
1739 im->xlab_user.gridst),
1740 timajor = find_first_time(im->start,
1741 im->xlab_user.mgridtm,
1742 im->xlab_user.mgridst);
1744 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1746 /* are we inside the graph ? */
1747 if (ti < im->start || ti > im->end) continue;
1748 while (timajor < ti) {
1749 timajor = find_next_time(timajor,
1750 im->xlab_user.mgridtm, im->xlab_user.mgridst);
1752 if (ti == timajor) continue; /* skip as falls on major grid line */
1754 gfx_new_dashed_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH,
1755 im->graph_col[GRC_GRID],
1756 im->grid_dash_on, im->grid_dash_off);
1761 /* paint the major grid */
1762 for(ti = find_first_time(im->start,
1763 im->xlab_user.mgridtm,
1764 im->xlab_user.mgridst);
1766 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1768 /* are we inside the graph ? */
1769 if (ti < im->start || ti > im->end) continue;
1771 gfx_new_dashed_line(im->canvas,X0,Y0+3, X0,Y1-2,MGRIDWIDTH,
1772 im->graph_col[GRC_MGRID],
1773 im->grid_dash_on, im->grid_dash_off);
1776 /* paint the labels below the graph */
1777 for(ti = find_first_time(im->start,
1778 im->xlab_user.labtm,
1779 im->xlab_user.labst);
1781 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1783 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1784 /* are we inside the graph ? */
1785 if (ti < im->start || ti > im->end) continue;
1788 localtime_r(&tilab, &tm);
1789 strftime(graph_label,99,im->xlab_user.stst, &tm);
1791 # error "your libc has no strftime I guess we'll abort the exercise here."
1793 gfx_new_text ( im->canvas,
1794 xtr(im,tilab), Y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1795 im->graph_col[GRC_FONT],
1796 im->text_prop[TEXT_PROP_AXIS].font,
1797 im->text_prop[TEXT_PROP_AXIS].size,
1798 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1811 /* draw x and y axis */
1812 gfx_new_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
1813 im->xorigin+im->xsize,im->yorigin-im->ysize,
1814 GRIDWIDTH, im->graph_col[GRC_GRID]);
1816 gfx_new_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
1817 im->xorigin+im->xsize,im->yorigin-im->ysize,
1818 GRIDWIDTH, im->graph_col[GRC_GRID]);
1820 gfx_new_line ( im->canvas, im->xorigin-4,im->yorigin,
1821 im->xorigin+im->xsize+4,im->yorigin,
1822 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1824 gfx_new_line ( im->canvas, im->xorigin,im->yorigin+4,
1825 im->xorigin,im->yorigin-im->ysize-4,
1826 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1829 /* arrow for X axis direction */
1830 gfx_new_area ( im->canvas,
1831 im->xorigin+im->xsize+3, im->yorigin-3,
1832 im->xorigin+im->xsize+3, im->yorigin+4,
1833 im->xorigin+im->xsize+8, im->yorigin+0.5, /* LINEOFFSET */
1834 im->graph_col[GRC_ARROW]);
1841 grid_paint(image_desc_t *im)
1845 double X0,Y0; /* points for filled graph and more*/
1848 /* draw 3d border */
1849 node = gfx_new_area (im->canvas, 0,im->yimg,
1851 2,2,im->graph_col[GRC_SHADEA]);
1852 gfx_add_point( node , im->ximg - 2, 2 );
1853 gfx_add_point( node , im->ximg, 0 );
1854 gfx_add_point( node , 0,0 );
1855 /* gfx_add_point( node , 0,im->yimg ); */
1857 node = gfx_new_area (im->canvas, 2,im->yimg-2,
1858 im->ximg-2,im->yimg-2,
1860 im->graph_col[GRC_SHADEB]);
1861 gfx_add_point( node , im->ximg,0);
1862 gfx_add_point( node , im->ximg,im->yimg);
1863 gfx_add_point( node , 0,im->yimg);
1864 /* gfx_add_point( node , 0,im->yimg ); */
1867 if (im->draw_x_grid == 1 )
1870 if (im->draw_y_grid == 1){
1871 if(im->logarithmic){
1872 res = horizontal_log_grid(im);
1874 res = draw_horizontal_grid(im);
1877 /* dont draw horizontal grid if there is no min and max val */
1879 char *nodata = "No Data found";
1880 gfx_new_text(im->canvas,im->ximg/2, (2*im->yorigin-im->ysize) / 2,
1881 im->graph_col[GRC_FONT],
1882 im->text_prop[TEXT_PROP_AXIS].font,
1883 im->text_prop[TEXT_PROP_AXIS].size,
1884 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1889 /* yaxis description */
1890 if (im->canvas->imgformat != IF_PNG) {
1891 gfx_new_text( im->canvas,
1892 7, (im->yorigin - im->ysize/2),
1893 im->graph_col[GRC_FONT],
1894 im->text_prop[TEXT_PROP_AXIS].font,
1895 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1896 GFX_H_CENTER, GFX_V_CENTER,
1899 /* horrible hack until we can actually print vertically */
1902 int l=strlen(im->ylegend);
1904 for (n=0;n<strlen(im->ylegend);n++) {
1905 s[0]=im->ylegend[n];
1907 gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(l-n),
1908 im->graph_col[GRC_FONT],
1909 im->text_prop[TEXT_PROP_AXIS].font,
1910 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1911 GFX_H_CENTER, GFX_V_CENTER,
1918 gfx_new_text( im->canvas,
1919 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size,
1920 im->graph_col[GRC_FONT],
1921 im->text_prop[TEXT_PROP_TITLE].font,
1922 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1923 GFX_H_CENTER, GFX_V_CENTER,
1927 if( !(im->extra_flags & NOLEGEND) ) {
1928 for(i=0;i<im->gdes_c;i++){
1929 if(im->gdes[i].legend[0] =='\0')
1932 /* im->gdes[i].leg_y is the bottom of the legend */
1933 X0 = im->gdes[i].leg_x;
1934 Y0 = im->gdes[i].leg_y;
1936 if ( im->gdes[i].gf != GF_GPRINT
1937 && im->gdes[i].gf != GF_COMMENT) {
1940 boxH = gfx_get_text_width(im->canvas, 0,
1941 im->text_prop[TEXT_PROP_AXIS].font,
1942 im->text_prop[TEXT_PROP_AXIS].size,
1943 im->tabwidth,"M") * 1.25;
1946 node = gfx_new_area(im->canvas,
1951 gfx_add_point ( node, X0+boxH, Y0-boxV );
1952 node = gfx_new_line(im->canvas,
1955 gfx_add_point(node,X0+boxH,Y0);
1956 gfx_add_point(node,X0+boxH,Y0-boxV);
1957 gfx_close_path(node);
1958 X0 += boxH / 1.25 * 2;
1960 gfx_new_text ( im->canvas, X0, Y0,
1961 im->graph_col[GRC_FONT],
1962 im->text_prop[TEXT_PROP_AXIS].font,
1963 im->text_prop[TEXT_PROP_AXIS].size,
1964 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1965 im->gdes[i].legend );
1971 /*****************************************************
1972 * lazy check make sure we rely need to create this graph
1973 *****************************************************/
1975 int lazy_check(image_desc_t *im){
1978 struct stat imgstat;
1980 if (im->lazy == 0) return 0; /* no lazy option */
1981 if (stat(im->graphfile,&imgstat) != 0)
1982 return 0; /* can't stat */
1983 /* one pixel in the existing graph is more then what we would
1985 if (time(NULL) - imgstat.st_mtime >
1986 (im->end - im->start) / im->xsize)
1988 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1989 return 0; /* the file does not exist */
1990 switch (im->canvas->imgformat) {
1992 size = PngSize(fd,&(im->ximg),&(im->yimg));
2002 pie_part(image_desc_t *im, gfx_color_t color,
2003 double PieCenterX, double PieCenterY, double Radius,
2004 double startangle, double endangle)
2008 double step=M_PI/50; /* Number of iterations for the circle;
2009 ** 10 is definitely too low, more than
2010 ** 50 seems to be overkill
2013 /* Strange but true: we have to work clockwise or else
2014 ** anti aliasing nor transparency don't work.
2016 ** This test is here to make sure we do it right, also
2017 ** this makes the for...next loop more easy to implement.
2018 ** The return will occur if the user enters a negative number
2019 ** (which shouldn't be done according to the specs) or if the
2020 ** programmers do something wrong (which, as we all know, never
2021 ** happens anyway :)
2023 if (endangle<startangle) return;
2025 /* Hidden feature: Radius decreases each full circle */
2027 while (angle>=2*M_PI) {
2032 node=gfx_new_area(im->canvas,
2033 PieCenterX+sin(startangle)*Radius,
2034 PieCenterY-cos(startangle)*Radius,
2037 PieCenterX+sin(endangle)*Radius,
2038 PieCenterY-cos(endangle)*Radius,
2040 for (angle=endangle;angle-startangle>=step;angle-=step) {
2042 PieCenterX+sin(angle)*Radius,
2043 PieCenterY-cos(angle)*Radius );
2048 graph_size_location(image_desc_t *im, int elements, int piechart )
2050 /* The actual size of the image to draw is determined from
2051 ** several sources. The size given on the command line is
2052 ** the graph area but we need more as we have to draw labels
2053 ** and other things outside the graph area
2056 /* +-+-------------------------------------------+
2057 ** |l|.................title.....................|
2058 ** |e+--+-------------------------------+--------+
2061 ** |l| l| main graph area | chart |
2064 ** |r+--+-------------------------------+--------+
2065 ** |e| | x-axis labels | |
2066 ** |v+--+-------------------------------+--------+
2067 ** | |..............legends......................|
2068 ** +-+-------------------------------------------+
2070 int Xvertical=0, Yvertical=0,
2071 Xtitle =0, Ytitle =0,
2072 Xylabel =0, Yylabel =0,
2075 Xxlabel =0, Yxlabel =0,
2077 Xlegend =0, Ylegend =0,
2079 Xspacing =10, Yspacing =10;
2081 if (im->ylegend[0] != '\0') {
2082 Xvertical = im->text_prop[TEXT_PROP_LEGEND].size *2;
2083 Yvertical = im->text_prop[TEXT_PROP_LEGEND].size * (strlen(im->ylegend)+1);
2086 if (im->title[0] != '\0') {
2087 /* The title is placed "inbetween" two text lines so it
2088 ** automatically has some vertical spacing. The horizontal
2089 ** spacing is added here, on each side.
2091 Xtitle = gfx_get_text_width(im->canvas, 0,
2092 im->text_prop[TEXT_PROP_TITLE].font,
2093 im->text_prop[TEXT_PROP_TITLE].size,
2095 im->title) + 2*Xspacing;
2096 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2;
2102 if (im->draw_x_grid) {
2104 Yxlabel=im->text_prop[TEXT_PROP_LEGEND].size *2;
2106 if (im->draw_y_grid) {
2107 Xylabel=im->text_prop[TEXT_PROP_LEGEND].size *6;
2113 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
2118 /* Now calculate the total size. Insert some spacing where
2119 desired. im->xorigin and im->yorigin need to correspond
2120 with the lower left corner of the main graph area or, if
2121 this one is not set, the imaginary box surrounding the
2124 /* The legend width cannot yet be determined, as a result we
2125 ** have problems adjusting the image to it. For now, we just
2126 ** forget about it at all; the legend will have to fit in the
2127 ** size already allocated.
2129 im->ximg = Xylabel + Xmain + Xpie + Xspacing;
2130 if (Xmain) im->ximg += Xspacing;
2131 if (Xpie) im->ximg += Xspacing;
2132 im->xorigin = Xspacing + Xylabel;
2133 if (Xtitle > im->ximg) im->ximg = Xtitle;
2135 im->ximg += Xvertical;
2136 im->xorigin += Xvertical;
2140 /* The vertical size is interesting... we need to compare
2141 ** the sum of {Ytitle, Ymain, Yxlabel, Ylegend} with Yvertical
2142 ** however we need to know {Ytitle+Ymain+Yxlabel} in order to
2143 ** start even thinking about Ylegend.
2145 ** Do it in three portions: First calculate the inner part,
2146 ** then do the legend, then adjust the total height of the img.
2149 /* reserve space for main and/or pie */
2150 im->yimg = Ymain + Yxlabel;
2151 if (im->yimg < Ypie) im->yimg = Ypie;
2152 im->yorigin = im->yimg - Yxlabel;
2153 /* reserve space for the title *or* some padding above the graph */
2156 im->yorigin += Ytitle;
2158 im->yimg += Yspacing;
2159 im->yorigin += Yspacing;
2161 /* reserve space for padding below the graph */
2162 im->yimg += Yspacing;
2165 /* Determine where to place the legends onto the image.
2166 ** Adjust im->yimg to match the space requirements.
2168 if(leg_place(im)==-1)
2171 /* last of three steps: check total height of image */
2172 if (im->yimg < Yvertical) im->yimg = Yvertical;
2175 if (Xlegend > im->ximg) {
2177 /* reposition Pie */
2181 /* The pie is placed in the upper right hand corner,
2182 ** just below the title (if any) and with sufficient
2186 im->pie_x = im->ximg - Xspacing - Xpie/2;
2187 im->pie_y = im->yorigin-Ymain+Ypie/2;
2189 im->pie_x = im->ximg/2;
2190 im->pie_y = im->yorigin-Ypie/2;
2196 /* draw that picture thing ... */
2198 graph_paint(image_desc_t *im, char ***calcpr)
2201 int lazy = lazy_check(im);
2203 double PieStart=0.0;
2207 double areazero = 0.0;
2208 enum gf_en stack_gf = GF_PRINT;
2209 graph_desc_t *lastgdes = NULL;
2211 /* if we are lazy and there is nothing to PRINT ... quit now */
2212 if (lazy && im->prt_c==0) return 0;
2214 /* pull the data from the rrd files ... */
2216 if(data_fetch(im)==-1)
2219 /* evaluate VDEF and CDEF operations ... */
2220 if(data_calc(im)==-1)
2223 /* check if we need to draw a piechart */
2224 for(i=0;i<im->gdes_c;i++){
2225 if (im->gdes[i].gf == GF_PART) {
2231 /* calculate and PRINT and GPRINT definitions. We have to do it at
2232 * this point because it will affect the length of the legends
2233 * if there are no graph elements we stop here ...
2234 * if we are lazy, try to quit ...
2236 i=print_calc(im,calcpr);
2238 if(((i==0)&&(piechart==0)) || lazy) return 0;
2240 /* If there's only the pie chart to draw, signal this */
2241 if (i==0) piechart=2;
2243 /* get actual drawing data and find min and max values*/
2244 if(data_proc(im)==-1)
2247 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
2249 if(!im->rigid && ! im->logarithmic)
2250 expand_range(im); /* make sure the upper and lower limit are
2253 if (!calc_horizontal_grid(im))
2258 /**************************************************************
2259 *** Calculating sizes and locations became a bit confusing ***
2260 *** so I moved this into a separate function. ***
2261 **************************************************************/
2262 if(graph_size_location(im,i,piechart)==-1)
2265 /* the actual graph is created by going through the individual
2266 graph elements and then drawing them */
2268 node=gfx_new_area ( im->canvas,
2272 im->graph_col[GRC_BACK]);
2274 gfx_add_point(node,0, im->yimg);
2276 if (piechart != 2) {
2277 node=gfx_new_area ( im->canvas,
2278 im->xorigin, im->yorigin,
2279 im->xorigin + im->xsize, im->yorigin,
2280 im->xorigin + im->xsize, im->yorigin-im->ysize,
2281 im->graph_col[GRC_CANVAS]);
2283 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2285 if (im->minval > 0.0)
2286 areazero = im->minval;
2287 if (im->maxval < 0.0)
2288 areazero = im->maxval;
2294 pie_part(im,im->graph_col[GRC_CANVAS],im->pie_x,im->pie_y,im->piesize*0.5,0,2*M_PI);
2297 for(i=0;i<im->gdes_c;i++){
2298 switch(im->gdes[i].gf){
2310 for (ii = 0; ii < im->xsize; ii++)
2312 if (!isnan(im->gdes[i].p_data[ii]) &&
2313 im->gdes[i].p_data[ii] > 0.0)
2315 /* generate a tick */
2316 gfx_new_line(im->canvas, im -> xorigin + ii,
2317 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2321 im -> gdes[i].col );
2327 stack_gf = im->gdes[i].gf;
2329 /* fix data points at oo and -oo */
2330 for(ii=0;ii<im->xsize;ii++){
2331 if (isinf(im->gdes[i].p_data[ii])){
2332 if (im->gdes[i].p_data[ii] > 0) {
2333 im->gdes[i].p_data[ii] = im->maxval ;
2335 im->gdes[i].p_data[ii] = im->minval ;
2341 if (im->gdes[i].col != 0x0){
2342 /* GF_LINE and friend */
2343 if(stack_gf == GF_LINE ){
2345 for(ii=1;ii<im->xsize;ii++){
2346 if ( ! isnan(im->gdes[i].p_data[ii-1])
2347 && ! isnan(im->gdes[i].p_data[ii])){
2349 node = gfx_new_line(im->canvas,
2350 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2351 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2352 im->gdes[i].linewidth,
2355 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2364 for(ii=1;ii<im->xsize;ii++){
2366 if ( ! isnan(im->gdes[i].p_data[ii-1])
2367 && ! isnan(im->gdes[i].p_data[ii])){
2371 if (im->gdes[i].gf == GF_STACK) {
2373 if ( (im->gdes[i].gf == GF_STACK)
2374 || (im->gdes[i].stack) ) {
2376 ybase = ytr(im,lastgdes->p_data[ii-1]);
2378 ybase = ytr(im,areazero);
2381 node = gfx_new_area(im->canvas,
2382 ii-1+im->xorigin,ybase,
2383 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2384 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2388 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2392 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2393 /* GF_AREA STACK type*/
2395 if (im->gdes[i].gf == GF_STACK ) {
2397 if ( (im->gdes[i].gf == GF_STACK)
2398 || (im->gdes[i].stack) ) {
2400 for (iii=ii-1;iii>area_start;iii--){
2401 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2404 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2409 } /* else GF_LINE */
2410 } /* if color != 0x0 */
2411 /* make sure we do not run into trouble when stacking on NaN */
2412 for(ii=0;ii<im->xsize;ii++){
2413 if (isnan(im->gdes[i].p_data[ii])) {
2414 if (lastgdes && (im->gdes[i].gf == GF_STACK)) {
2415 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
2417 im->gdes[i].p_data[ii] = ytr(im,areazero);
2421 lastgdes = &(im->gdes[i]);
2424 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2425 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2427 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2428 pie_part(im,im->gdes[i].col,
2429 im->pie_x,im->pie_y,im->piesize*0.4,
2430 M_PI*2.0*PieStart/100.0,
2431 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2432 PieStart += im->gdes[i].yrule;
2441 /* grid_paint also does the text */
2444 /* the RULES are the last thing to paint ... */
2445 for(i=0;i<im->gdes_c;i++){
2447 switch(im->gdes[i].gf){
2449 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2450 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2452 if(im->gdes[i].yrule >= im->minval
2453 && im->gdes[i].yrule <= im->maxval)
2454 gfx_new_line(im->canvas,
2455 im->xorigin,ytr(im,im->gdes[i].yrule),
2456 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2457 1.0,im->gdes[i].col);
2460 if(im->gdes[i].xrule == 0) { /* fetch variable */
2461 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2463 if(im->gdes[i].xrule >= im->start
2464 && im->gdes[i].xrule <= im->end)
2465 gfx_new_line(im->canvas,
2466 xtr(im,im->gdes[i].xrule),im->yorigin,
2467 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2468 1.0,im->gdes[i].col);
2476 if (strcmp(im->graphfile,"-")==0) {
2478 /* Change translation mode for stdout to BINARY */
2479 _setmode( _fileno( stdout ), O_BINARY );
2483 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2484 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2485 rrd_strerror(errno));
2489 gfx_render (im->canvas,im->ximg,im->yimg,0x0,fo);
2490 if (strcmp(im->graphfile,"-") != 0)
2496 /*****************************************************
2498 *****************************************************/
2501 gdes_alloc(image_desc_t *im){
2503 unsigned long def_step = (im->end-im->start)/im->xsize;
2505 if (im->step > def_step) /* step can be increassed ... no decreassed */
2506 def_step = im->step;
2510 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2511 * sizeof(graph_desc_t)))==NULL){
2512 rrd_set_error("realloc graph_descs");
2517 im->gdes[im->gdes_c-1].step=def_step;
2518 im->gdes[im->gdes_c-1].stack=0;
2519 im->gdes[im->gdes_c-1].debug=0;
2520 im->gdes[im->gdes_c-1].start=im->start;
2521 im->gdes[im->gdes_c-1].end=im->end;
2522 im->gdes[im->gdes_c-1].vname[0]='\0';
2523 im->gdes[im->gdes_c-1].data=NULL;
2524 im->gdes[im->gdes_c-1].ds_namv=NULL;
2525 im->gdes[im->gdes_c-1].data_first=0;
2526 im->gdes[im->gdes_c-1].p_data=NULL;
2527 im->gdes[im->gdes_c-1].rpnp=NULL;
2528 im->gdes[im->gdes_c-1].col = 0x0;
2529 im->gdes[im->gdes_c-1].legend[0]='\0';
2530 im->gdes[im->gdes_c-1].rrd[0]='\0';
2531 im->gdes[im->gdes_c-1].ds=-1;
2532 im->gdes[im->gdes_c-1].p_data=NULL;
2533 im->gdes[im->gdes_c-1].yrule=DNAN;
2534 im->gdes[im->gdes_c-1].xrule=0;
2538 /* copies input untill the first unescaped colon is found
2539 or until input ends. backslashes have to be escaped as well */
2541 scan_for_col(char *input, int len, char *output)
2546 input[inp] != ':' &&
2549 if (input[inp] == '\\' &&
2550 input[inp+1] != '\0' &&
2551 (input[inp+1] == '\\' ||
2552 input[inp+1] == ':')){
2553 output[outp++] = input[++inp];
2556 output[outp++] = input[inp];
2559 output[outp] = '\0';
2562 /* Some surgery done on this function, it became ridiculously big.
2564 ** - initializing now in rrd_graph_init()
2565 ** - options parsing now in rrd_graph_options()
2566 ** - script parsing now in rrd_graph_script()
2569 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2573 rrd_graph_init(&im);
2575 rrd_graph_options(argc,argv,&im);
2576 if (rrd_test_error()) {
2581 if (strlen(argv[optind])>=MAXPATH) {
2582 rrd_set_error("filename (including path) too long");
2586 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2587 im.graphfile[MAXPATH-1]='\0';
2589 rrd_graph_script(argc,argv,&im);
2590 if (rrd_test_error()) {
2595 /* Everything is now read and the actual work can start */
2598 if (graph_paint(&im,prdata)==-1){
2603 /* The image is generated and needs to be output.
2604 ** Also, if needed, print a line with information about the image.
2612 /* maybe prdata is not allocated yet ... lets do it now */
2613 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2614 rrd_set_error("malloc imginfo");
2618 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2620 rrd_set_error("malloc imginfo");
2623 filename=im.graphfile+strlen(im.graphfile);
2624 while(filename > im.graphfile) {
2625 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2629 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.canvas->zoom*im.ximg),(long)(im.canvas->zoom*im.yimg));
2636 rrd_graph_init(image_desc_t *im)
2643 #ifdef HAVE_SETLOCALE
2644 setlocale(LC_TIME,"");
2647 im->xlab_user.minsec = -1;
2653 im->ylegend[0] = '\0';
2654 im->title[0] = '\0';
2657 im->unitsexponent= 9999;
2663 im->logarithmic = 0;
2664 im->ygridstep = DNAN;
2665 im->draw_x_grid = 1;
2666 im->draw_y_grid = 1;
2671 im->canvas = gfx_new_canvas();
2672 im->grid_dash_on = 1;
2673 im->grid_dash_off = 1;
2675 for(i=0;i<DIM(graph_col);i++)
2676 im->graph_col[i]=graph_col[i];
2678 for(i=0;i<DIM(text_prop);i++){
2679 im->text_prop[i].size = text_prop[i].size;
2680 im->text_prop[i].font = text_prop[i].font;
2685 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2688 char *parsetime_error = NULL;
2689 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2690 time_t start_tmp=0,end_tmp=0;
2692 struct time_value start_tv, end_tv;
2695 parsetime("end-24h", &start_tv);
2696 parsetime("now", &end_tv);
2699 static struct option long_options[] =
2701 {"start", required_argument, 0, 's'},
2702 {"end", required_argument, 0, 'e'},
2703 {"x-grid", required_argument, 0, 'x'},
2704 {"y-grid", required_argument, 0, 'y'},
2705 {"vertical-label",required_argument,0,'v'},
2706 {"width", required_argument, 0, 'w'},
2707 {"height", required_argument, 0, 'h'},
2708 {"interlaced", no_argument, 0, 'i'},
2709 {"upper-limit",required_argument, 0, 'u'},
2710 {"lower-limit",required_argument, 0, 'l'},
2711 {"rigid", no_argument, 0, 'r'},
2712 {"base", required_argument, 0, 'b'},
2713 {"logarithmic",no_argument, 0, 'o'},
2714 {"color", required_argument, 0, 'c'},
2715 {"font", required_argument, 0, 'n'},
2716 {"title", required_argument, 0, 't'},
2717 {"imginfo", required_argument, 0, 'f'},
2718 {"imgformat", required_argument, 0, 'a'},
2719 {"lazy", no_argument, 0, 'z'},
2720 {"zoom", required_argument, 0, 'm'},
2721 {"no-legend", no_argument, 0, 'g'},
2722 {"alt-y-grid", no_argument, 0, 'Y'},
2723 {"no-minor", no_argument, 0, 'I'},
2724 {"alt-autoscale", no_argument, 0, 'A'},
2725 {"alt-autoscale-max", no_argument, 0, 'M'},
2726 {"units-exponent",required_argument, 0, 'X'},
2727 {"step", required_argument, 0, 'S'},
2728 {"no-gridfit", no_argument, 0, 'N'},
2730 int option_index = 0;
2734 opt = getopt_long(argc, argv,
2735 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:I:zgYAMX:S:N",
2736 long_options, &option_index);
2743 im->extra_flags |= NOMINOR;
2746 im->extra_flags |= ALTYGRID;
2749 im->extra_flags |= ALTAUTOSCALE;
2752 im->extra_flags |= ALTAUTOSCALE_MAX;
2755 im->extra_flags |= NOLEGEND;
2758 im->unitsexponent = atoi(optarg);
2761 im->step = atoi(optarg);
2767 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2768 rrd_set_error( "start time: %s", parsetime_error );
2773 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2774 rrd_set_error( "end time: %s", parsetime_error );
2779 if(strcmp(optarg,"none") == 0){
2785 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2787 &im->xlab_user.gridst,
2789 &im->xlab_user.mgridst,
2791 &im->xlab_user.labst,
2792 &im->xlab_user.precis,
2793 &stroff) == 7 && stroff != 0){
2794 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2795 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2796 rrd_set_error("unknown keyword %s",scan_gtm);
2798 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2799 rrd_set_error("unknown keyword %s",scan_mtm);
2801 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2802 rrd_set_error("unknown keyword %s",scan_ltm);
2805 im->xlab_user.minsec = 1;
2806 im->xlab_user.stst = im->xlab_form;
2808 rrd_set_error("invalid x-grid format");
2814 if(strcmp(optarg,"none") == 0){
2822 &im->ylabfact) == 2) {
2823 if(im->ygridstep<=0){
2824 rrd_set_error("grid step must be > 0");
2826 } else if (im->ylabfact < 1){
2827 rrd_set_error("label factor must be > 0");
2831 rrd_set_error("invalid y-grid format");
2836 strncpy(im->ylegend,optarg,150);
2837 im->ylegend[150]='\0';
2840 im->maxval = atof(optarg);
2843 im->minval = atof(optarg);
2846 im->base = atol(optarg);
2847 if(im->base != 1024 && im->base != 1000 ){
2848 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2853 long_tmp = atol(optarg);
2854 if (long_tmp < 10) {
2855 rrd_set_error("width below 10 pixels");
2858 im->xsize = long_tmp;
2861 long_tmp = atol(optarg);
2862 if (long_tmp < 10) {
2863 rrd_set_error("height below 10 pixels");
2866 im->ysize = long_tmp;
2869 im->canvas->interlaced = 1;
2875 im->imginfo = optarg;
2878 if((im->canvas->imgformat = if_conv(optarg)) == -1) {
2879 rrd_set_error("unsupported graphics format '%s'",optarg);
2887 im->logarithmic = 1;
2888 if (isnan(im->minval))
2894 col_nam,&color) == 2){
2896 if((ci=grc_conv(col_nam)) != -1){
2897 im->graph_col[ci]=color;
2899 rrd_set_error("invalid color name '%s'",col_nam);
2902 rrd_set_error("invalid color def format");
2907 /* originally this used char *prop = "" and
2908 ** char *font = "dummy" however this results
2909 ** in a SEG fault, at least on RH7.1
2911 ** The current implementation isn't proper
2912 ** either, font is never freed and prop uses
2913 ** a fixed width string
2922 prop,&size,font) == 3){
2924 if((sindex=text_prop_conv(prop)) != -1){
2925 im->text_prop[sindex].size=size;
2926 im->text_prop[sindex].font=font;
2927 if (sindex==0) { /* the default */
2928 im->text_prop[TEXT_PROP_TITLE].size=size;
2929 im->text_prop[TEXT_PROP_TITLE].font=font;
2930 im->text_prop[TEXT_PROP_AXIS].size=size;
2931 im->text_prop[TEXT_PROP_AXIS].font=font;
2932 im->text_prop[TEXT_PROP_UNIT].size=size;
2933 im->text_prop[TEXT_PROP_UNIT].font=font;
2934 im->text_prop[TEXT_PROP_LEGEND].size=size;
2935 im->text_prop[TEXT_PROP_LEGEND].font=font;
2938 rrd_set_error("invalid fonttag '%s'",prop);
2942 rrd_set_error("invalid text property format");
2948 im->canvas->zoom = atof(optarg);
2949 if (im->canvas->zoom <= 0.0) {
2950 rrd_set_error("zoom factor must be > 0");
2955 strncpy(im->title,optarg,150);
2956 im->title[150]='\0';
2961 rrd_set_error("unknown option '%c'", optopt);
2963 rrd_set_error("unknown option '%s'",argv[optind-1]);
2968 if (optind >= argc) {
2969 rrd_set_error("missing filename");
2973 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2974 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2978 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2979 /* error string is set in parsetime.c */
2983 if (start_tmp < 3600*24*365*10){
2984 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2988 if (end_tmp < start_tmp) {
2989 rrd_set_error("start (%ld) should be less than end (%ld)",
2990 start_tmp, end_tmp);
2994 im->start = start_tmp;
2999 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
3001 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
3002 rrd_set_error("Unknown variable '%s' in %s",varname,err);
3008 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
3011 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
3013 color=strstr(var,"#");
3016 rrd_set_error("Found no color in %s",err);
3025 rest=strstr(color,":");
3033 sscanf(color,"#%6lx%n",&col,&n);
3034 col = (col << 8) + 0xff /* shift left by 8 */;
3035 if (n!=7) rrd_set_error("Color problem in %s",err);
3038 sscanf(color,"#%8lx%n",&col,&n);
3041 rrd_set_error("Color problem in %s",err);
3043 if (rrd_test_error()) return 0;
3049 rrd_graph_legend(graph_desc_t *gdp, char *line)
3053 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3055 return (strlen(&line[i])==0);
3059 int bad_format(char *fmt) {
3063 while (*ptr != '\0')
3064 if (*ptr++ == '%') {
3066 /* line cannot end with percent char */
3067 if (*ptr == '\0') return 1;
3069 /* '%s', '%S' and '%%' are allowed */
3070 if (*ptr == 's' || *ptr == 'S' || *ptr == '%') ptr++;
3072 /* or else '% 6.2lf' and such are allowed */
3075 /* optional padding character */
3076 if (*ptr == ' ' || *ptr == '+' || *ptr == '-') ptr++;
3078 /* This should take care of 'm.n' with all three optional */
3079 while (*ptr >= '0' && *ptr <= '9') ptr++;
3080 if (*ptr == '.') ptr++;
3081 while (*ptr >= '0' && *ptr <= '9') ptr++;
3083 /* Either 'le', 'lf' or 'lg' must follow here */
3084 if (*ptr++ != 'l') return 1;
3085 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g') ptr++;
3096 vdef_parse(gdes,str)
3097 struct graph_desc_t *gdes;
3100 /* A VDEF currently is either "func" or "param,func"
3101 * so the parsing is rather simple. Change if needed.
3108 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3109 if (n==strlen(str)) { /* matched */
3113 sscanf(str,"%29[A-Z]%n",func,&n);
3114 if (n==strlen(str)) { /* matched */
3117 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3124 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3125 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3126 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3127 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3128 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3129 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3130 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3132 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3139 switch (gdes->vf.op) {
3141 if (isnan(param)) { /* no parameter given */
3142 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3148 if (param>=0.0 && param<=100.0) {
3149 gdes->vf.param = param;
3150 gdes->vf.val = DNAN; /* undefined */
3151 gdes->vf.when = 0; /* undefined */
3153 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3167 gdes->vf.param = DNAN;
3168 gdes->vf.val = DNAN;
3171 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3188 graph_desc_t *src,*dst;
3192 dst = &im->gdes[gdi];
3193 src = &im->gdes[dst->vidx];
3194 data = src->data + src->ds;
3195 steps = (src->end - src->start) / src->step;
3198 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3205 switch (dst->vf.op) {
3206 case VDEF_PERCENT: {
3207 rrd_value_t * array;
3211 if ((array = malloc(steps*sizeof(double)))==NULL) {
3212 rrd_set_error("malloc VDEV_PERCENT");
3215 for (step=0;step < steps; step++) {
3216 array[step]=data[step*src->ds_cnt];
3218 qsort(array,step,sizeof(double),vdef_percent_compar);
3220 field = (steps-1)*dst->vf.param/100;
3221 dst->vf.val = array[field];
3222 dst->vf.when = 0; /* no time component */
3225 for(step=0;step<steps;step++)
3226 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3232 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3233 if (step == steps) {
3237 dst->vf.val = data[step*src->ds_cnt];
3238 dst->vf.when = src->start + (step+1)*src->step;
3240 while (step != steps) {
3241 if (finite(data[step*src->ds_cnt])) {
3242 if (data[step*src->ds_cnt] > dst->vf.val) {
3243 dst->vf.val = data[step*src->ds_cnt];
3244 dst->vf.when = src->start + (step+1)*src->step;
3251 case VDEF_AVERAGE: {
3254 for (step=0;step<steps;step++) {
3255 if (finite(data[step*src->ds_cnt])) {
3256 sum += data[step*src->ds_cnt];
3261 if (dst->vf.op == VDEF_TOTAL) {
3262 dst->vf.val = sum*src->step;
3263 dst->vf.when = cnt*src->step; /* not really "when" */
3265 dst->vf.val = sum/cnt;
3266 dst->vf.when = 0; /* no time component */
3276 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3277 if (step == steps) {
3281 dst->vf.val = data[step*src->ds_cnt];
3282 dst->vf.when = src->start + (step+1)*src->step;
3284 while (step != steps) {
3285 if (finite(data[step*src->ds_cnt])) {
3286 if (data[step*src->ds_cnt] < dst->vf.val) {
3287 dst->vf.val = data[step*src->ds_cnt];
3288 dst->vf.when = src->start + (step+1)*src->step;
3295 /* The time value returned here is one step before the
3296 * actual time value. This is the start of the first
3300 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3301 if (step == steps) { /* all entries were NaN */
3305 dst->vf.val = data[step*src->ds_cnt];
3306 dst->vf.when = src->start + step*src->step;
3310 /* The time value returned here is the
3311 * actual time value. This is the end of the last
3315 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3316 if (step < 0) { /* all entries were NaN */
3320 dst->vf.val = data[step*src->ds_cnt];
3321 dst->vf.when = src->start + (step+1)*src->step;
3328 /* NaN < -INF < finite_values < INF */
3330 vdef_percent_compar(a,b)
3333 /* Equality is not returned; this doesn't hurt except
3334 * (maybe) for a little performance.
3337 /* First catch NaN values. They are smallest */
3338 if (isnan( *(double *)a )) return -1;
3339 if (isnan( *(double *)b )) return 1;
3341 /* NaN doesn't reach this part so INF and -INF are extremes.
3342 * The sign from isinf() is compatible with the sign we return
3344 if (isinf( *(double *)a )) return isinf( *(double *)a );
3345 if (isinf( *(double *)b )) return isinf( *(double *)b );
3347 /* If we reach this, both values must be finite */
3348 if ( *(double *)a < *(double *)b ) return -1; else return 1;