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 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
858 if (im->gdes[ptr].ds_cnt == 0) {
860 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
862 im->gdes[ptr].vname);
863 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
865 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
866 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
868 if ((steparray = rrd_realloc(steparray, (++stepcnt+1)*sizeof(*steparray)))==NULL){
869 rrd_set_error("realloc steparray");
870 rpnstack_free(&rpnstack);
874 steparray[stepcnt-1] = im->gdes[ptr].step;
876 /* adjust start and end of cdef (gdi) so
877 * that it runs from the latest start point
878 * to the earliest endpoint of any of the
879 * rras involved (ptr)
881 if(im->gdes[gdi].start < im->gdes[ptr].start)
882 im->gdes[gdi].start = im->gdes[ptr].start;
884 if(im->gdes[gdi].end == 0 ||
885 im->gdes[gdi].end > im->gdes[ptr].end)
886 im->gdes[gdi].end = im->gdes[ptr].end;
888 /* store pointer to the first element of
889 * the rra providing data for variable,
890 * further save step size and data source
893 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
894 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
895 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
897 /* backoff the *.data ptr; this is done so
898 * rpncalc() function doesn't have to treat
899 * the first case differently
901 } /* if ds_cnt != 0 */
902 } /* if OP_VARIABLE */
903 } /* loop through all rpi */
905 /* move the data pointers to the correct period */
906 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
907 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
908 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
909 if(im->gdes[gdi].start > im->gdes[ptr].start) {
910 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
916 if(steparray == NULL){
917 rrd_set_error("rpn expressions without DEF"
918 " or CDEF variables are not supported");
919 rpnstack_free(&rpnstack);
922 steparray[stepcnt]=0;
923 /* Now find the resulting step. All steps in all
924 * used RRAs have to be visited
926 im->gdes[gdi].step = lcd(steparray);
928 if((im->gdes[gdi].data = malloc((
929 (im->gdes[gdi].end-im->gdes[gdi].start)
930 / im->gdes[gdi].step)
931 * sizeof(double)))==NULL){
932 rrd_set_error("malloc im->gdes[gdi].data");
933 rpnstack_free(&rpnstack);
937 /* Step through the new cdef results array and
938 * calculate the values
940 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
941 now<=im->gdes[gdi].end;
942 now += im->gdes[gdi].step)
944 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
946 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
947 * in this case we are advancing by timesteps;
948 * we use the fact that time_t is a synonym for long
950 if (rpn_calc(rpnp,&rpnstack,(long) now,
951 im->gdes[gdi].data,++dataidx) == -1) {
952 /* rpn_calc sets the error string */
953 rpnstack_free(&rpnstack);
956 } /* enumerate over time steps within a CDEF */
961 } /* enumerate over CDEFs */
962 rpnstack_free(&rpnstack);
966 /* massage data so, that we get one value for each x coordinate in the graph */
968 data_proc( image_desc_t *im ){
970 double pixstep = (double)(im->end-im->start)
971 /(double)im->xsize; /* how much time
972 passes in one pixel */
974 double minval=DNAN,maxval=DNAN;
976 unsigned long gr_time;
978 /* memory for the processed data */
979 for(i=0;i<im->gdes_c;i++) {
980 if((im->gdes[i].gf==GF_LINE) ||
981 (im->gdes[i].gf==GF_AREA) ||
982 (im->gdes[i].gf==GF_TICK) ||
983 (im->gdes[i].gf==GF_STACK)) {
984 if((im->gdes[i].p_data = malloc((im->xsize +1)
985 * sizeof(rrd_value_t)))==NULL){
986 rrd_set_error("malloc data_proc");
992 for (i=0;i<im->xsize;i++) { /* for each pixel */
994 gr_time = im->start+pixstep*i; /* time of the current step */
997 for (ii=0;ii<im->gdes_c;ii++) {
999 switch (im->gdes[ii].gf) {
1003 if (!im->gdes[ii].stack)
1006 value = im->gdes[ii].yrule;
1007 if (isnan(value)) { /* not a number or VDEF */
1008 /* The time of the data doesn't necessarily match
1009 ** the time of the graph. Beware.
1011 vidx = im->gdes[ii].vidx;
1012 if ( (gr_time >= im->gdes[vidx].start) &&
1013 (gr_time <= im->gdes[vidx].end) ) {
1014 value = im->gdes[vidx].data[
1015 (unsigned long) floor(
1016 (double)(gr_time - im->gdes[vidx].start)
1017 / im->gdes[vidx].step)
1018 * im->gdes[vidx].ds_cnt
1026 if (! isnan(value)) {
1028 im->gdes[ii].p_data[i] = paintval;
1029 /* GF_TICK: the data values are not
1030 ** relevant for min and max
1032 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ) {
1033 if (isnan(minval) || paintval < minval)
1035 if (isnan(maxval) || paintval > maxval)
1039 im->gdes[ii].p_data[i] = DNAN;
1048 /* if min or max have not been asigned a value this is because
1049 there was no data in the graph ... this is not good ...
1050 lets set these to dummy values then ... */
1052 if (isnan(minval)) minval = 0.0;
1053 if (isnan(maxval)) maxval = 1.0;
1055 /* adjust min and max values */
1056 if (isnan(im->minval)
1057 /* don't adjust low-end with log scale */
1058 || ((!im->logarithmic && !im->rigid) && im->minval > minval)
1060 im->minval = minval;
1061 if (isnan(im->maxval)
1062 || (!im->rigid && im->maxval < maxval)
1064 if (im->logarithmic)
1065 im->maxval = maxval * 1.1;
1067 im->maxval = maxval;
1069 /* make sure min and max are not equal */
1070 if (im->minval == im->maxval) {
1072 if (! im->logarithmic) {
1075 /* make sure min and max are not both zero */
1076 if (im->maxval == 0.0) {
1085 /* identify the point where the first gridline, label ... gets placed */
1089 time_t start, /* what is the initial time */
1090 enum tmt_en baseint, /* what is the basic interval */
1091 long basestep /* how many if these do we jump a time */
1095 tm = *localtime(&start);
1098 tm.tm_sec -= tm.tm_sec % basestep; break;
1101 tm.tm_min -= tm.tm_min % basestep;
1106 tm.tm_hour -= tm.tm_hour % basestep; break;
1108 /* we do NOT look at the basestep for this ... */
1111 tm.tm_hour = 0; break;
1113 /* we do NOT look at the basestep for this ... */
1117 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1118 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1125 tm.tm_mon -= tm.tm_mon % basestep; break;
1133 tm.tm_year -= (tm.tm_year+1900) % basestep;
1138 /* identify the point where the next gridline, label ... gets placed */
1141 time_t current, /* what is the initial time */
1142 enum tmt_en baseint, /* what is the basic interval */
1143 long basestep /* how many if these do we jump a time */
1148 tm = *localtime(¤t);
1152 tm.tm_sec += basestep; break;
1154 tm.tm_min += basestep; break;
1156 tm.tm_hour += basestep; break;
1158 tm.tm_mday += basestep; break;
1160 tm.tm_mday += 7*basestep; break;
1162 tm.tm_mon += basestep; break;
1164 tm.tm_year += basestep;
1166 madetime = mktime(&tm);
1167 } while (madetime == -1); /* this is necessary to skip impssible times
1168 like the daylight saving time skips */
1174 /* calculate values required for PRINT and GPRINT functions */
1177 print_calc(image_desc_t *im, char ***prdata)
1179 long i,ii,validsteps;
1182 int graphelement = 0;
1185 double magfact = -1;
1189 if (im->imginfo) prlines++;
1190 for(i=0;i<im->gdes_c;i++){
1191 switch(im->gdes[i].gf){
1194 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1195 rrd_set_error("realloc prdata");
1199 /* PRINT and GPRINT can now print VDEF generated values.
1200 * There's no need to do any calculations on them as these
1201 * calculations were already made.
1203 vidx = im->gdes[i].vidx;
1204 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1205 printval = im->gdes[vidx].vf.val;
1206 printtime = im->gdes[vidx].vf.when;
1207 } else { /* need to calculate max,min,avg etcetera */
1208 max_ii =((im->gdes[vidx].end
1209 - im->gdes[vidx].start)
1210 / im->gdes[vidx].step
1211 * im->gdes[vidx].ds_cnt);
1214 for( ii=im->gdes[vidx].ds;
1216 ii+=im->gdes[vidx].ds_cnt){
1217 if (! finite(im->gdes[vidx].data[ii]))
1219 if (isnan(printval)){
1220 printval = im->gdes[vidx].data[ii];
1225 switch (im->gdes[i].cf){
1228 case CF_DEVSEASONAL:
1232 printval += im->gdes[vidx].data[ii];
1235 printval = min( printval, im->gdes[vidx].data[ii]);
1239 printval = max( printval, im->gdes[vidx].data[ii]);
1242 printval = im->gdes[vidx].data[ii];
1245 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1246 if (validsteps > 1) {
1247 printval = (printval / validsteps);
1250 } /* prepare printval */
1252 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1253 if (im->gdes[i].gf == GF_PRINT){
1254 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1255 sprintf((*prdata)[prlines-2],"%s (%lu)",
1256 ctime(&printtime),printtime);
1257 (*prdata)[prlines-1] = NULL;
1259 sprintf(im->gdes[i].legend,"%s (%lu)",
1260 ctime(&printtime),printtime);
1264 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1265 /* Magfact is set to -1 upon entry to print_calc. If it
1266 * is still less than 0, then we need to run auto_scale.
1267 * Otherwise, put the value into the correct units. If
1268 * the value is 0, then do not set the symbol or magnification
1269 * so next the calculation will be performed again. */
1270 if (magfact < 0.0) {
1271 auto_scale(im,&printval,&si_symb,&magfact);
1272 if (printval == 0.0)
1275 printval /= magfact;
1277 *(++percent_s) = 's';
1278 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1279 auto_scale(im,&printval,&si_symb,&magfact);
1282 if (im->gdes[i].gf == GF_PRINT){
1283 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1284 if (bad_format(im->gdes[i].format)) {
1285 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1288 #ifdef HAVE_SNPRINTF
1289 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1291 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1293 (*prdata)[prlines-1] = NULL;
1297 if (bad_format(im->gdes[i].format)) {
1298 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1301 #ifdef HAVE_SNPRINTF
1302 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1304 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1327 return graphelement;
1331 /* place legends with color spots */
1333 leg_place(image_desc_t *im)
1336 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1337 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1338 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1339 int fill=0, fill_last;
1341 int leg_x = border, leg_y = im->yimg;
1345 char prt_fctn; /*special printfunctions */
1348 if( !(im->extra_flags & NOLEGEND) ) {
1349 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1350 rrd_set_error("malloc for legspace");
1354 for(i=0;i<im->gdes_c;i++){
1357 leg_cc = strlen(im->gdes[i].legend);
1359 /* is there a controle code ant the end of the legend string ? */
1360 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1361 prt_fctn = im->gdes[i].legend[leg_cc-1];
1363 im->gdes[i].legend[leg_cc] = '\0';
1367 /* remove exess space */
1368 while (prt_fctn=='g' &&
1370 im->gdes[i].legend[leg_cc-1]==' '){
1372 im->gdes[i].legend[leg_cc]='\0';
1375 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1378 /* no interleg space if string ends in \g */
1379 fill += legspace[i];
1381 if (im->gdes[i].gf != GF_GPRINT &&
1382 im->gdes[i].gf != GF_COMMENT) {
1385 fill += gfx_get_text_width(im->canvas, fill+border,
1386 im->text_prop[TEXT_PROP_LEGEND].font,
1387 im->text_prop[TEXT_PROP_LEGEND].size,
1389 im->gdes[i].legend);
1394 /* who said there was a special tag ... ?*/
1395 if (prt_fctn=='g') {
1398 if (prt_fctn == '\0') {
1399 if (i == im->gdes_c -1 ) prt_fctn ='l';
1401 /* is it time to place the legends ? */
1402 if (fill > im->ximg - 2*border){
1417 if (prt_fctn != '\0'){
1419 if (leg_c >= 2 && prt_fctn == 'j') {
1420 glue = (im->ximg - fill - 2* border) / (leg_c-1);
1424 if (prt_fctn =='c') leg_x = (im->ximg - fill) / 2.0;
1425 if (prt_fctn =='r') leg_x = im->ximg - fill - border;
1427 for(ii=mark;ii<=i;ii++){
1428 if(im->gdes[ii].legend[0]=='\0')
1430 im->gdes[ii].leg_x = leg_x;
1431 im->gdes[ii].leg_y = leg_y;
1433 gfx_get_text_width(im->canvas, leg_x,
1434 im->text_prop[TEXT_PROP_LEGEND].font,
1435 im->text_prop[TEXT_PROP_LEGEND].size,
1437 im->gdes[ii].legend)
1440 if (im->gdes[ii].gf != GF_GPRINT &&
1441 im->gdes[ii].gf != GF_COMMENT)
1444 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1445 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1457 /* create a grid on the graph. it determines what to do
1458 from the values of xsize, start and end */
1460 /* the xaxis labels are determined from the number of seconds per pixel
1461 in the requested graph */
1466 calc_horizontal_grid(image_desc_t *im)
1472 int decimals, fractionals;
1474 im->ygrid_scale.labfact=2;
1476 range = im->maxval - im->minval;
1477 scaledrange = range / im->magfact;
1479 /* does the scale of this graph make it impossible to put lines
1480 on it? If so, give up. */
1481 if (isnan(scaledrange)) {
1485 /* find grid spaceing */
1487 if(isnan(im->ygridstep)){
1488 if(im->extra_flags & ALTYGRID) {
1489 /* find the value with max number of digits. Get number of digits */
1490 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1491 if(decimals <= 0) /* everything is small. make place for zero */
1494 fractionals = floor(log10(range));
1495 if(fractionals < 0) /* small amplitude. */
1496 sprintf(im->ygrid_scale.labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1498 sprintf(im->ygrid_scale.labfmt, "%%%d.1f", decimals + 1);
1499 im->ygrid_scale.gridstep = pow((double)10, (double)fractionals);
1500 if(im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1501 im->ygrid_scale.gridstep = 0.1;
1502 /* should have at least 5 lines but no more then 15 */
1503 if(range/im->ygrid_scale.gridstep < 5)
1504 im->ygrid_scale.gridstep /= 10;
1505 if(range/im->ygrid_scale.gridstep > 15)
1506 im->ygrid_scale.gridstep *= 10;
1507 if(range/im->ygrid_scale.gridstep > 5) {
1508 im->ygrid_scale.labfact = 1;
1509 if(range/im->ygrid_scale.gridstep > 8)
1510 im->ygrid_scale.labfact = 2;
1513 im->ygrid_scale.gridstep /= 5;
1514 im->ygrid_scale.labfact = 5;
1518 for(i=0;ylab[i].grid > 0;i++){
1519 pixel = im->ysize / (scaledrange / ylab[i].grid);
1520 if (gridind == -1 && pixel > 5) {
1527 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1528 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
1533 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
1536 im->ygrid_scale.gridstep = im->ygridstep;
1537 im->ygrid_scale.labfact = im->ylabfact;
1542 int draw_horizontal_grid(image_desc_t *im)
1546 char graph_label[100];
1547 double X0=im->xorigin;
1548 double X1=im->xorigin+im->xsize;
1550 int sgrid = (int)( im->minval / im->ygrid_scale.gridstep - 1);
1551 int egrid = (int)( im->maxval / im->ygrid_scale.gridstep + 1);
1552 scaledstep = im->ygrid_scale.gridstep/im->magfact;
1553 for (i = sgrid; i <= egrid; i++){
1554 double Y0=ytr(im,im->ygrid_scale.gridstep*i);
1555 if ( Y0 >= im->yorigin-im->ysize
1556 && Y0 <= im->yorigin){
1557 if(i % im->ygrid_scale.labfact == 0){
1558 if (i==0 || im->symbol == ' ') {
1560 if(im->extra_flags & ALTYGRID) {
1561 sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*i);
1564 sprintf(graph_label,"%4.1f",scaledstep*i);
1567 sprintf(graph_label,"%4.0f",scaledstep*i);
1571 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1573 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1577 gfx_new_text ( im->canvas,
1578 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1579 im->graph_col[GRC_FONT],
1580 im->text_prop[TEXT_PROP_AXIS].font,
1581 im->text_prop[TEXT_PROP_AXIS].size,
1582 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1584 gfx_new_dashed_line ( im->canvas,
1587 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1588 im->grid_dash_on, im->grid_dash_off);
1591 gfx_new_dashed_line ( im->canvas,
1594 GRIDWIDTH, im->graph_col[GRC_GRID],
1595 im->grid_dash_on, im->grid_dash_off);
1603 /* logaritmic horizontal grid */
1605 horizontal_log_grid(image_desc_t *im)
1609 int minoridx=0, majoridx=0;
1610 char graph_label[100];
1612 double value, pixperstep, minstep;
1614 /* find grid spaceing */
1615 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1617 if (isnan(pixpex)) {
1621 for(i=0;yloglab[i][0] > 0;i++){
1622 minstep = log10(yloglab[i][0]);
1623 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1624 if(yloglab[i][ii+2]==0){
1625 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1629 pixperstep = pixpex * minstep;
1630 if(pixperstep > 5){minoridx = i;}
1631 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1635 X1=im->xorigin+im->xsize;
1636 /* paint minor grid */
1637 for (value = pow((double)10, log10(im->minval)
1638 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1639 value <= im->maxval;
1640 value *= yloglab[minoridx][0]){
1641 if (value < im->minval) continue;
1643 while(yloglab[minoridx][++i] > 0){
1644 Y0 = ytr(im,value * yloglab[minoridx][i]);
1645 if (Y0 <= im->yorigin - im->ysize) break;
1646 gfx_new_dashed_line ( im->canvas,
1649 GRIDWIDTH, im->graph_col[GRC_GRID],
1650 im->grid_dash_on, im->grid_dash_off);
1654 /* paint major grid and labels*/
1655 for (value = pow((double)10, log10(im->minval)
1656 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1657 value <= im->maxval;
1658 value *= yloglab[majoridx][0]){
1659 if (value < im->minval) continue;
1661 while(yloglab[majoridx][++i] > 0){
1662 Y0 = ytr(im,value * yloglab[majoridx][i]);
1663 if (Y0 <= im->yorigin - im->ysize) break;
1664 gfx_new_dashed_line ( im->canvas,
1667 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1668 im->grid_dash_on, im->grid_dash_off);
1670 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1671 gfx_new_text ( im->canvas,
1672 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1673 im->graph_col[GRC_FONT],
1674 im->text_prop[TEXT_PROP_AXIS].font,
1675 im->text_prop[TEXT_PROP_AXIS].size,
1676 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1688 int xlab_sel; /* which sort of label and grid ? */
1689 time_t ti, tilab, timajor;
1691 char graph_label[100];
1692 double X0,Y0,Y1; /* points for filled graph and more*/
1695 /* the type of time grid is determined by finding
1696 the number of seconds per pixel in the graph */
1699 if(im->xlab_user.minsec == -1){
1700 factor=(im->end - im->start)/im->xsize;
1702 while ( xlab[xlab_sel+1].minsec != -1
1703 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1704 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1705 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1706 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1707 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1708 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1709 im->xlab_user.labst = xlab[xlab_sel].labst;
1710 im->xlab_user.precis = xlab[xlab_sel].precis;
1711 im->xlab_user.stst = xlab[xlab_sel].stst;
1714 /* y coords are the same for every line ... */
1716 Y1 = im->yorigin-im->ysize;
1719 /* paint the minor grid */
1720 for(ti = find_first_time(im->start,
1721 im->xlab_user.gridtm,
1722 im->xlab_user.gridst),
1723 timajor = find_first_time(im->start,
1724 im->xlab_user.mgridtm,
1725 im->xlab_user.mgridst);
1727 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1729 /* are we inside the graph ? */
1730 if (ti < im->start || ti > im->end) continue;
1731 while (timajor < ti) {
1732 timajor = find_next_time(timajor,
1733 im->xlab_user.mgridtm, im->xlab_user.mgridst);
1735 if (ti == timajor) continue; /* skip as falls on major grid line */
1737 gfx_new_dashed_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH,
1738 im->graph_col[GRC_GRID],
1739 im->grid_dash_on, im->grid_dash_off);
1743 /* paint the major grid */
1744 for(ti = find_first_time(im->start,
1745 im->xlab_user.mgridtm,
1746 im->xlab_user.mgridst);
1748 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1750 /* are we inside the graph ? */
1751 if (ti < im->start || ti > im->end) continue;
1753 gfx_new_dashed_line(im->canvas,X0,Y0+3, X0,Y1-2,MGRIDWIDTH,
1754 im->graph_col[GRC_MGRID],
1755 im->grid_dash_on, im->grid_dash_off);
1758 /* paint the labels below the graph */
1759 for(ti = find_first_time(im->start,
1760 im->xlab_user.labtm,
1761 im->xlab_user.labst);
1763 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1765 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1766 /* are we inside the graph ? */
1767 if (ti < im->start || ti > im->end) continue;
1770 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1772 # error "your libc has no strftime I guess we'll abort the exercise here."
1774 gfx_new_text ( im->canvas,
1775 xtr(im,tilab), Y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1776 im->graph_col[GRC_FONT],
1777 im->text_prop[TEXT_PROP_AXIS].font,
1778 im->text_prop[TEXT_PROP_AXIS].size,
1779 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1792 /* draw x and y axis */
1793 gfx_new_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
1794 im->xorigin+im->xsize,im->yorigin-im->ysize,
1795 GRIDWIDTH, im->graph_col[GRC_GRID]);
1797 gfx_new_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
1798 im->xorigin+im->xsize,im->yorigin-im->ysize,
1799 GRIDWIDTH, im->graph_col[GRC_GRID]);
1801 gfx_new_line ( im->canvas, im->xorigin-4,im->yorigin,
1802 im->xorigin+im->xsize+4,im->yorigin,
1803 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1805 gfx_new_line ( im->canvas, im->xorigin,im->yorigin+4,
1806 im->xorigin,im->yorigin-im->ysize-4,
1807 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1810 /* arrow for X axis direction */
1811 gfx_new_area ( im->canvas,
1812 im->xorigin+im->xsize+3, im->yorigin-3,
1813 im->xorigin+im->xsize+3, im->yorigin+4,
1814 im->xorigin+im->xsize+8, im->yorigin+0.5, /* LINEOFFSET */
1815 im->graph_col[GRC_ARROW]);
1822 grid_paint(image_desc_t *im)
1826 double X0,Y0; /* points for filled graph and more*/
1829 /* draw 3d border */
1830 node = gfx_new_area (im->canvas, 0,im->yimg,
1832 2,2,im->graph_col[GRC_SHADEA]);
1833 gfx_add_point( node , im->ximg - 2, 2 );
1834 gfx_add_point( node , im->ximg, 0 );
1835 gfx_add_point( node , 0,0 );
1836 /* gfx_add_point( node , 0,im->yimg ); */
1838 node = gfx_new_area (im->canvas, 2,im->yimg-2,
1839 im->ximg-2,im->yimg-2,
1841 im->graph_col[GRC_SHADEB]);
1842 gfx_add_point( node , im->ximg,0);
1843 gfx_add_point( node , im->ximg,im->yimg);
1844 gfx_add_point( node , 0,im->yimg);
1845 /* gfx_add_point( node , 0,im->yimg ); */
1848 if (im->draw_x_grid == 1 )
1851 if (im->draw_y_grid == 1){
1852 if(im->logarithmic){
1853 res = horizontal_log_grid(im);
1855 res = draw_horizontal_grid(im);
1858 /* dont draw horizontal grid if there is no min and max val */
1860 char *nodata = "No Data found";
1861 gfx_new_text(im->canvas,im->ximg/2, (2*im->yorigin-im->ysize) / 2,
1862 im->graph_col[GRC_FONT],
1863 im->text_prop[TEXT_PROP_AXIS].font,
1864 im->text_prop[TEXT_PROP_AXIS].size,
1865 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1870 /* yaxis description */
1871 if (im->canvas->imgformat != IF_PNG) {
1872 gfx_new_text( im->canvas,
1873 7, (im->yorigin - im->ysize/2),
1874 im->graph_col[GRC_FONT],
1875 im->text_prop[TEXT_PROP_AXIS].font,
1876 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1877 GFX_H_CENTER, GFX_V_CENTER,
1880 /* horrible hack until we can actually print vertically */
1883 int l=strlen(im->ylegend);
1885 for (n=0;n<strlen(im->ylegend);n++) {
1886 s[0]=im->ylegend[n];
1888 gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(l-n),
1889 im->graph_col[GRC_FONT],
1890 im->text_prop[TEXT_PROP_AXIS].font,
1891 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1892 GFX_H_CENTER, GFX_V_CENTER,
1899 gfx_new_text( im->canvas,
1900 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size,
1901 im->graph_col[GRC_FONT],
1902 im->text_prop[TEXT_PROP_TITLE].font,
1903 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1904 GFX_H_CENTER, GFX_V_CENTER,
1908 if( !(im->extra_flags & NOLEGEND) ) {
1909 for(i=0;i<im->gdes_c;i++){
1910 if(im->gdes[i].legend[0] =='\0')
1913 /* im->gdes[i].leg_y is the bottom of the legend */
1914 X0 = im->gdes[i].leg_x;
1915 Y0 = im->gdes[i].leg_y;
1917 if ( im->gdes[i].gf != GF_GPRINT
1918 && im->gdes[i].gf != GF_COMMENT) {
1921 boxH = gfx_get_text_width(im->canvas, 0,
1922 im->text_prop[TEXT_PROP_AXIS].font,
1923 im->text_prop[TEXT_PROP_AXIS].size,
1924 im->tabwidth,"M") * 1.25;
1927 node = gfx_new_area(im->canvas,
1932 gfx_add_point ( node, X0+boxH, Y0-boxV );
1933 node = gfx_new_line(im->canvas,
1936 gfx_add_point(node,X0+boxH,Y0);
1937 gfx_add_point(node,X0+boxH,Y0-boxV);
1938 gfx_close_path(node);
1939 X0 += boxH / 1.25 * 2;
1941 gfx_new_text ( im->canvas, X0, Y0,
1942 im->graph_col[GRC_FONT],
1943 im->text_prop[TEXT_PROP_AXIS].font,
1944 im->text_prop[TEXT_PROP_AXIS].size,
1945 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1946 im->gdes[i].legend );
1952 /*****************************************************
1953 * lazy check make sure we rely need to create this graph
1954 *****************************************************/
1956 int lazy_check(image_desc_t *im){
1959 struct stat imgstat;
1961 if (im->lazy == 0) return 0; /* no lazy option */
1962 if (stat(im->graphfile,&imgstat) != 0)
1963 return 0; /* can't stat */
1964 /* one pixel in the existing graph is more then what we would
1966 if (time(NULL) - imgstat.st_mtime >
1967 (im->end - im->start) / im->xsize)
1969 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1970 return 0; /* the file does not exist */
1971 switch (im->canvas->imgformat) {
1973 size = PngSize(fd,&(im->ximg),&(im->yimg));
1983 pie_part(image_desc_t *im, gfx_color_t color,
1984 double PieCenterX, double PieCenterY, double Radius,
1985 double startangle, double endangle)
1989 double step=M_PI/50; /* Number of iterations for the circle;
1990 ** 10 is definitely too low, more than
1991 ** 50 seems to be overkill
1994 /* Strange but true: we have to work clockwise or else
1995 ** anti aliasing nor transparency don't work.
1997 ** This test is here to make sure we do it right, also
1998 ** this makes the for...next loop more easy to implement.
1999 ** The return will occur if the user enters a negative number
2000 ** (which shouldn't be done according to the specs) or if the
2001 ** programmers do something wrong (which, as we all know, never
2002 ** happens anyway :)
2004 if (endangle<startangle) return;
2006 /* Hidden feature: Radius decreases each full circle */
2008 while (angle>=2*M_PI) {
2013 node=gfx_new_area(im->canvas,
2014 PieCenterX+sin(startangle)*Radius,
2015 PieCenterY-cos(startangle)*Radius,
2018 PieCenterX+sin(endangle)*Radius,
2019 PieCenterY-cos(endangle)*Radius,
2021 for (angle=endangle;angle-startangle>=step;angle-=step) {
2023 PieCenterX+sin(angle)*Radius,
2024 PieCenterY-cos(angle)*Radius );
2029 graph_size_location(image_desc_t *im, int elements, int piechart )
2031 /* The actual size of the image to draw is determined from
2032 ** several sources. The size given on the command line is
2033 ** the graph area but we need more as we have to draw labels
2034 ** and other things outside the graph area
2037 /* +-+-------------------------------------------+
2038 ** |l|.................title.....................|
2039 ** |e+--+-------------------------------+--------+
2042 ** |l| l| main graph area | chart |
2045 ** |r+--+-------------------------------+--------+
2046 ** |e| | x-axis labels | |
2047 ** |v+--+-------------------------------+--------+
2048 ** | |..............legends......................|
2049 ** +-+-------------------------------------------+
2051 int Xvertical=0, Yvertical=0,
2052 Xtitle =0, Ytitle =0,
2053 Xylabel =0, Yylabel =0,
2056 Xxlabel =0, Yxlabel =0,
2058 Xlegend =0, Ylegend =0,
2060 Xspacing =10, Yspacing =10;
2062 if (im->ylegend[0] != '\0') {
2063 Xvertical = im->text_prop[TEXT_PROP_LEGEND].size *2;
2064 Yvertical = im->text_prop[TEXT_PROP_LEGEND].size * (strlen(im->ylegend)+1);
2067 if (im->title[0] != '\0') {
2068 /* The title is placed "inbetween" two text lines so it
2069 ** automatically has some vertical spacing. The horizontal
2070 ** spacing is added here, on each side.
2072 Xtitle = gfx_get_text_width(im->canvas, 0,
2073 im->text_prop[TEXT_PROP_TITLE].font,
2074 im->text_prop[TEXT_PROP_TITLE].size,
2076 im->title) + 2*Xspacing;
2077 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2;
2083 if (im->draw_x_grid) {
2085 Yxlabel=im->text_prop[TEXT_PROP_LEGEND].size *2;
2087 if (im->draw_y_grid) {
2088 Xylabel=im->text_prop[TEXT_PROP_LEGEND].size *6;
2094 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
2099 /* Now calculate the total size. Insert some spacing where
2100 desired. im->xorigin and im->yorigin need to correspond
2101 with the lower left corner of the main graph area or, if
2102 this one is not set, the imaginary box surrounding the
2105 /* The legend width cannot yet be determined, as a result we
2106 ** have problems adjusting the image to it. For now, we just
2107 ** forget about it at all; the legend will have to fit in the
2108 ** size already allocated.
2110 im->ximg = Xylabel + Xmain + Xpie + Xspacing;
2111 if (Xmain) im->ximg += Xspacing;
2112 if (Xpie) im->ximg += Xspacing;
2113 im->xorigin = Xspacing + Xylabel;
2114 if (Xtitle > im->ximg) im->ximg = Xtitle;
2116 im->ximg += Xvertical;
2117 im->xorigin += Xvertical;
2121 /* The vertical size is interesting... we need to compare
2122 ** the sum of {Ytitle, Ymain, Yxlabel, Ylegend} with Yvertical
2123 ** however we need to know {Ytitle+Ymain+Yxlabel} in order to
2124 ** start even thinking about Ylegend.
2126 ** Do it in three portions: First calculate the inner part,
2127 ** then do the legend, then adjust the total height of the img.
2130 /* reserve space for main and/or pie */
2131 im->yimg = Ymain + Yxlabel;
2132 if (im->yimg < Ypie) im->yimg = Ypie;
2133 im->yorigin = im->yimg - Yxlabel;
2134 /* reserve space for the title *or* some padding above the graph */
2137 im->yorigin += Ytitle;
2139 im->yimg += Yspacing;
2140 im->yorigin += Yspacing;
2142 /* reserve space for padding below the graph */
2143 im->yimg += Yspacing;
2146 /* Determine where to place the legends onto the image.
2147 ** Adjust im->yimg to match the space requirements.
2149 if(leg_place(im)==-1)
2152 /* last of three steps: check total height of image */
2153 if (im->yimg < Yvertical) im->yimg = Yvertical;
2156 if (Xlegend > im->ximg) {
2158 /* reposition Pie */
2162 /* The pie is placed in the upper right hand corner,
2163 ** just below the title (if any) and with sufficient
2167 im->pie_x = im->ximg - Xspacing - Xpie/2;
2168 im->pie_y = im->yorigin-Ymain+Ypie/2;
2170 im->pie_x = im->ximg/2;
2171 im->pie_y = im->yorigin-Ypie/2;
2177 /* draw that picture thing ... */
2179 graph_paint(image_desc_t *im, char ***calcpr)
2182 int lazy = lazy_check(im);
2184 double PieStart=0.0;
2188 double areazero = 0.0;
2189 enum gf_en stack_gf = GF_PRINT;
2190 graph_desc_t *lastgdes = NULL;
2192 /* if we are lazy and there is nothing to PRINT ... quit now */
2193 if (lazy && im->prt_c==0) return 0;
2195 /* pull the data from the rrd files ... */
2197 if(data_fetch(im)==-1)
2200 /* evaluate VDEF and CDEF operations ... */
2201 if(data_calc(im)==-1)
2204 /* check if we need to draw a piechart */
2205 for(i=0;i<im->gdes_c;i++){
2206 if (im->gdes[i].gf == GF_PART) {
2212 /* calculate and PRINT and GPRINT definitions. We have to do it at
2213 * this point because it will affect the length of the legends
2214 * if there are no graph elements we stop here ...
2215 * if we are lazy, try to quit ...
2217 i=print_calc(im,calcpr);
2219 if(((i==0)&&(piechart==0)) || lazy) return 0;
2221 /* If there's only the pie chart to draw, signal this */
2222 if (i==0) piechart=2;
2224 /* get actual drawing data and find min and max values*/
2225 if(data_proc(im)==-1)
2228 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
2230 if(!im->rigid && ! im->logarithmic)
2231 expand_range(im); /* make sure the upper and lower limit are
2234 if (!calc_horizontal_grid(im))
2239 /**************************************************************
2240 *** Calculating sizes and locations became a bit confusing ***
2241 *** so I moved this into a separate function. ***
2242 **************************************************************/
2243 if(graph_size_location(im,i,piechart)==-1)
2246 /* the actual graph is created by going through the individual
2247 graph elements and then drawing them */
2249 node=gfx_new_area ( im->canvas,
2253 im->graph_col[GRC_BACK]);
2255 gfx_add_point(node,0, im->yimg);
2257 if (piechart != 2) {
2258 node=gfx_new_area ( im->canvas,
2259 im->xorigin, im->yorigin,
2260 im->xorigin + im->xsize, im->yorigin,
2261 im->xorigin + im->xsize, im->yorigin-im->ysize,
2262 im->graph_col[GRC_CANVAS]);
2264 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2266 if (im->minval > 0.0)
2267 areazero = im->minval;
2268 if (im->maxval < 0.0)
2269 areazero = im->maxval;
2275 pie_part(im,im->graph_col[GRC_CANVAS],im->pie_x,im->pie_y,im->piesize*0.5,0,2*M_PI);
2278 for(i=0;i<im->gdes_c;i++){
2279 switch(im->gdes[i].gf){
2291 for (ii = 0; ii < im->xsize; ii++)
2293 if (!isnan(im->gdes[i].p_data[ii]) &&
2294 im->gdes[i].p_data[ii] > 0.0)
2296 /* generate a tick */
2297 gfx_new_line(im->canvas, im -> xorigin + ii,
2298 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2302 im -> gdes[i].col );
2308 stack_gf = im->gdes[i].gf;
2310 /* fix data points at oo and -oo */
2311 for(ii=0;ii<im->xsize;ii++){
2312 if (isinf(im->gdes[i].p_data[ii])){
2313 if (im->gdes[i].p_data[ii] > 0) {
2314 im->gdes[i].p_data[ii] = im->maxval ;
2316 im->gdes[i].p_data[ii] = im->minval ;
2322 if (im->gdes[i].col != 0x0){
2323 /* GF_LINE and friend */
2324 if(stack_gf == GF_LINE ){
2326 for(ii=1;ii<im->xsize;ii++){
2327 if ( ! isnan(im->gdes[i].p_data[ii-1])
2328 && ! isnan(im->gdes[i].p_data[ii])){
2330 node = gfx_new_line(im->canvas,
2331 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2332 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2333 im->gdes[i].linewidth,
2336 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2345 for(ii=1;ii<im->xsize;ii++){
2347 if ( ! isnan(im->gdes[i].p_data[ii-1])
2348 && ! isnan(im->gdes[i].p_data[ii])){
2352 if (im->gdes[i].gf == GF_STACK) {
2354 if ( (im->gdes[i].gf == GF_STACK)
2355 || (im->gdes[i].stack) ) {
2357 ybase = ytr(im,lastgdes->p_data[ii-1]);
2359 ybase = ytr(im,areazero);
2362 node = gfx_new_area(im->canvas,
2363 ii-1+im->xorigin,ybase,
2364 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2365 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2369 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2373 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2374 /* GF_AREA STACK type*/
2376 if (im->gdes[i].gf == GF_STACK ) {
2378 if ( (im->gdes[i].gf == GF_STACK)
2379 || (im->gdes[i].stack) ) {
2381 for (iii=ii-1;iii>area_start;iii--){
2382 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2385 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2390 } /* else GF_LINE */
2391 } /* if color != 0x0 */
2392 /* make sure we do not run into trouble when stacking on NaN */
2393 for(ii=0;ii<im->xsize;ii++){
2394 if (isnan(im->gdes[i].p_data[ii])) {
2397 ybase = ytr(im,lastgdes->p_data[ii-1]);
2399 if (isnan(ybase) || !lastgdes ){
2400 ybase = ytr(im,areazero);
2402 im->gdes[i].p_data[ii] = ybase;
2405 lastgdes = &(im->gdes[i]);
2408 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2409 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2411 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2412 pie_part(im,im->gdes[i].col,
2413 im->pie_x,im->pie_y,im->piesize*0.4,
2414 M_PI*2.0*PieStart/100.0,
2415 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2416 PieStart += im->gdes[i].yrule;
2425 /* grid_paint also does the text */
2428 /* the RULES are the last thing to paint ... */
2429 for(i=0;i<im->gdes_c;i++){
2431 switch(im->gdes[i].gf){
2433 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2434 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2436 if(im->gdes[i].yrule >= im->minval
2437 && im->gdes[i].yrule <= im->maxval)
2438 gfx_new_line(im->canvas,
2439 im->xorigin,ytr(im,im->gdes[i].yrule),
2440 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2441 1.0,im->gdes[i].col);
2444 if(im->gdes[i].xrule == 0) { /* fetch variable */
2445 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2447 if(im->gdes[i].xrule >= im->start
2448 && im->gdes[i].xrule <= im->end)
2449 gfx_new_line(im->canvas,
2450 xtr(im,im->gdes[i].xrule),im->yorigin,
2451 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2452 1.0,im->gdes[i].col);
2460 if (strcmp(im->graphfile,"-")==0) {
2462 /* Change translation mode for stdout to BINARY */
2463 _setmode( _fileno( stdout ), O_BINARY );
2467 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2468 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2473 gfx_render (im->canvas,im->ximg,im->yimg,0x0,fo);
2474 if (strcmp(im->graphfile,"-") != 0)
2480 /*****************************************************
2482 *****************************************************/
2485 gdes_alloc(image_desc_t *im){
2487 long def_step = (im->end-im->start)/im->xsize;
2489 if (im->step > def_step) /* step can be increassed ... no decreassed */
2490 def_step = im->step;
2494 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2495 * sizeof(graph_desc_t)))==NULL){
2496 rrd_set_error("realloc graph_descs");
2501 im->gdes[im->gdes_c-1].step=def_step;
2502 im->gdes[im->gdes_c-1].stack=0;
2503 im->gdes[im->gdes_c-1].debug=0;
2504 im->gdes[im->gdes_c-1].start=im->start;
2505 im->gdes[im->gdes_c-1].end=im->end;
2506 im->gdes[im->gdes_c-1].vname[0]='\0';
2507 im->gdes[im->gdes_c-1].data=NULL;
2508 im->gdes[im->gdes_c-1].ds_namv=NULL;
2509 im->gdes[im->gdes_c-1].data_first=0;
2510 im->gdes[im->gdes_c-1].p_data=NULL;
2511 im->gdes[im->gdes_c-1].rpnp=NULL;
2512 im->gdes[im->gdes_c-1].col = 0x0;
2513 im->gdes[im->gdes_c-1].legend[0]='\0';
2514 im->gdes[im->gdes_c-1].rrd[0]='\0';
2515 im->gdes[im->gdes_c-1].ds=-1;
2516 im->gdes[im->gdes_c-1].p_data=NULL;
2517 im->gdes[im->gdes_c-1].yrule=DNAN;
2518 im->gdes[im->gdes_c-1].xrule=0;
2522 /* copies input untill the first unescaped colon is found
2523 or until input ends. backslashes have to be escaped as well */
2525 scan_for_col(char *input, int len, char *output)
2530 input[inp] != ':' &&
2533 if (input[inp] == '\\' &&
2534 input[inp+1] != '\0' &&
2535 (input[inp+1] == '\\' ||
2536 input[inp+1] == ':')){
2537 output[outp++] = input[++inp];
2540 output[outp++] = input[inp];
2543 output[outp] = '\0';
2546 /* Some surgery done on this function, it became ridiculously big.
2548 ** - initializing now in rrd_graph_init()
2549 ** - options parsing now in rrd_graph_options()
2550 ** - script parsing now in rrd_graph_script()
2553 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2557 rrd_graph_init(&im);
2559 rrd_graph_options(argc,argv,&im);
2560 if (rrd_test_error()) {
2565 if (strlen(argv[optind])>=MAXPATH) {
2566 rrd_set_error("filename (including path) too long");
2570 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2571 im.graphfile[MAXPATH-1]='\0';
2573 rrd_graph_script(argc,argv,&im);
2574 if (rrd_test_error()) {
2579 /* Everything is now read and the actual work can start */
2582 if (graph_paint(&im,prdata)==-1){
2587 /* The image is generated and needs to be output.
2588 ** Also, if needed, print a line with information about the image.
2596 /* maybe prdata is not allocated yet ... lets do it now */
2597 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2598 rrd_set_error("malloc imginfo");
2602 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2604 rrd_set_error("malloc imginfo");
2607 filename=im.graphfile+strlen(im.graphfile);
2608 while(filename > im.graphfile) {
2609 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2613 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.canvas->zoom*im.ximg),(long)(im.canvas->zoom*im.yimg));
2620 rrd_graph_init(image_desc_t *im)
2627 #ifdef HAVE_SETLOCALE
2628 setlocale(LC_TIME,"");
2631 im->xlab_user.minsec = -1;
2637 im->ylegend[0] = '\0';
2638 im->title[0] = '\0';
2641 im->unitsexponent= 9999;
2647 im->logarithmic = 0;
2648 im->ygridstep = DNAN;
2649 im->draw_x_grid = 1;
2650 im->draw_y_grid = 1;
2655 im->canvas = gfx_new_canvas();
2656 im->grid_dash_on = 1;
2657 im->grid_dash_off = 1;
2659 for(i=0;i<DIM(graph_col);i++)
2660 im->graph_col[i]=graph_col[i];
2662 for(i=0;i<DIM(text_prop);i++){
2663 im->text_prop[i].size = text_prop[i].size;
2664 im->text_prop[i].font = text_prop[i].font;
2669 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2672 char *parsetime_error = NULL;
2673 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2674 time_t start_tmp=0,end_tmp=0;
2676 struct time_value start_tv, end_tv;
2679 parsetime("end-24h", &start_tv);
2680 parsetime("now", &end_tv);
2683 static struct option long_options[] =
2685 {"start", required_argument, 0, 's'},
2686 {"end", required_argument, 0, 'e'},
2687 {"x-grid", required_argument, 0, 'x'},
2688 {"y-grid", required_argument, 0, 'y'},
2689 {"vertical-label",required_argument,0,'v'},
2690 {"width", required_argument, 0, 'w'},
2691 {"height", required_argument, 0, 'h'},
2692 {"interlaced", no_argument, 0, 'i'},
2693 {"upper-limit",required_argument, 0, 'u'},
2694 {"lower-limit",required_argument, 0, 'l'},
2695 {"rigid", no_argument, 0, 'r'},
2696 {"base", required_argument, 0, 'b'},
2697 {"logarithmic",no_argument, 0, 'o'},
2698 {"color", required_argument, 0, 'c'},
2699 {"font", required_argument, 0, 'n'},
2700 {"title", required_argument, 0, 't'},
2701 {"imginfo", required_argument, 0, 'f'},
2702 {"imgformat", required_argument, 0, 'a'},
2703 {"lazy", no_argument, 0, 'z'},
2704 {"zoom", required_argument, 0, 'm'},
2705 {"no-legend", no_argument, 0, 'g'},
2706 {"alt-y-grid", no_argument, 0, 257 },
2707 {"alt-autoscale", no_argument, 0, 258 },
2708 {"alt-autoscale-max", no_argument, 0, 259 },
2709 {"units-exponent",required_argument, 0, 260},
2710 {"step", required_argument, 0, 261},
2711 {"no-gridfit", no_argument, 0, 262},
2713 int option_index = 0;
2717 opt = getopt_long(argc, argv,
2718 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2719 long_options, &option_index);
2726 im->extra_flags |= ALTYGRID;
2729 im->extra_flags |= ALTAUTOSCALE;
2732 im->extra_flags |= ALTAUTOSCALE_MAX;
2735 im->extra_flags |= NOLEGEND;
2738 im->unitsexponent = atoi(optarg);
2741 im->step = atoi(optarg);
2747 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2748 rrd_set_error( "start time: %s", parsetime_error );
2753 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2754 rrd_set_error( "end time: %s", parsetime_error );
2759 if(strcmp(optarg,"none") == 0){
2765 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2767 &im->xlab_user.gridst,
2769 &im->xlab_user.mgridst,
2771 &im->xlab_user.labst,
2772 &im->xlab_user.precis,
2773 &stroff) == 7 && stroff != 0){
2774 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2775 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2776 rrd_set_error("unknown keyword %s",scan_gtm);
2778 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2779 rrd_set_error("unknown keyword %s",scan_mtm);
2781 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2782 rrd_set_error("unknown keyword %s",scan_ltm);
2785 im->xlab_user.minsec = 1;
2786 im->xlab_user.stst = im->xlab_form;
2788 rrd_set_error("invalid x-grid format");
2794 if(strcmp(optarg,"none") == 0){
2802 &im->ylabfact) == 2) {
2803 if(im->ygridstep<=0){
2804 rrd_set_error("grid step must be > 0");
2806 } else if (im->ylabfact < 1){
2807 rrd_set_error("label factor must be > 0");
2811 rrd_set_error("invalid y-grid format");
2816 strncpy(im->ylegend,optarg,150);
2817 im->ylegend[150]='\0';
2820 im->maxval = atof(optarg);
2823 im->minval = atof(optarg);
2826 im->base = atol(optarg);
2827 if(im->base != 1024 && im->base != 1000 ){
2828 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2833 long_tmp = atol(optarg);
2834 if (long_tmp < 10) {
2835 rrd_set_error("width below 10 pixels");
2838 im->xsize = long_tmp;
2841 long_tmp = atol(optarg);
2842 if (long_tmp < 10) {
2843 rrd_set_error("height below 10 pixels");
2846 im->ysize = long_tmp;
2849 im->canvas->interlaced = 1;
2855 im->imginfo = optarg;
2858 if((im->canvas->imgformat = if_conv(optarg)) == -1) {
2859 rrd_set_error("unsupported graphics format '%s'",optarg);
2867 im->logarithmic = 1;
2868 if (isnan(im->minval))
2874 col_nam,&color) == 2){
2876 if((ci=grc_conv(col_nam)) != -1){
2877 im->graph_col[ci]=color;
2879 rrd_set_error("invalid color name '%s'",col_nam);
2882 rrd_set_error("invalid color def format");
2887 /* originally this used char *prop = "" and
2888 ** char *font = "dummy" however this results
2889 ** in a SEG fault, at least on RH7.1
2891 ** The current implementation isn't proper
2892 ** either, font is never freed and prop uses
2893 ** a fixed width string
2902 prop,&size,font) == 3){
2904 if((sindex=text_prop_conv(prop)) != -1){
2905 im->text_prop[sindex].size=size;
2906 im->text_prop[sindex].font=font;
2907 if (sindex==0) { /* the default */
2908 im->text_prop[TEXT_PROP_TITLE].size=size;
2909 im->text_prop[TEXT_PROP_TITLE].font=font;
2910 im->text_prop[TEXT_PROP_AXIS].size=size;
2911 im->text_prop[TEXT_PROP_AXIS].font=font;
2912 im->text_prop[TEXT_PROP_UNIT].size=size;
2913 im->text_prop[TEXT_PROP_UNIT].font=font;
2914 im->text_prop[TEXT_PROP_LEGEND].size=size;
2915 im->text_prop[TEXT_PROP_LEGEND].font=font;
2918 rrd_set_error("invalid fonttag '%s'",prop);
2922 rrd_set_error("invalid text property format");
2928 im->canvas->zoom = atof(optarg);
2929 if (im->canvas->zoom <= 0.0) {
2930 rrd_set_error("zoom factor must be > 0");
2935 strncpy(im->title,optarg,150);
2936 im->title[150]='\0';
2941 rrd_set_error("unknown option '%c'", optopt);
2943 rrd_set_error("unknown option '%s'",argv[optind-1]);
2948 if (optind >= argc) {
2949 rrd_set_error("missing filename");
2953 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2954 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2958 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2959 /* error string is set in parsetime.c */
2963 if (start_tmp < 3600*24*365*10){
2964 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2968 if (end_tmp < start_tmp) {
2969 rrd_set_error("start (%ld) should be less than end (%ld)",
2970 start_tmp, end_tmp);
2974 im->start = start_tmp;
2979 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2981 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2982 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2988 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2991 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2993 color=strstr(var,"#");
2996 rrd_set_error("Found no color in %s",err);
3005 rest=strstr(color,":");
3013 sscanf(color,"#%6lx%n",&col,&n);
3014 col = (col << 8) + 0xff /* shift left by 8 */;
3015 if (n!=7) rrd_set_error("Color problem in %s",err);
3018 sscanf(color,"#%8lx%n",&col,&n);
3021 rrd_set_error("Color problem in %s",err);
3023 if (rrd_test_error()) return 0;
3029 rrd_graph_legend(graph_desc_t *gdp, char *line)
3033 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3035 return (strlen(&line[i])==0);
3039 int bad_format(char *fmt) {
3043 while (*ptr != '\0')
3044 if (*ptr++ == '%') {
3046 /* line cannot end with percent char */
3047 if (*ptr == '\0') return 1;
3049 /* '%s', '%S' and '%%' are allowed */
3050 if (*ptr == 's' || *ptr == 'S' || *ptr == '%') ptr++;
3052 /* or else '% 6.2lf' and such are allowed */
3055 /* optional padding character */
3056 if (*ptr == ' ' || *ptr == '+' || *ptr == '-') ptr++;
3058 /* This should take care of 'm.n' with all three optional */
3059 while (*ptr >= '0' && *ptr <= '9') ptr++;
3060 if (*ptr == '.') ptr++;
3061 while (*ptr >= '0' && *ptr <= '9') ptr++;
3063 /* Either 'le' or 'lf' must follow here */
3064 if (*ptr++ != 'l') return 1;
3065 if (*ptr == 'e' || *ptr == 'f') ptr++;
3076 vdef_parse(gdes,str)
3077 struct graph_desc_t *gdes;
3080 /* A VDEF currently is either "func" or "param,func"
3081 * so the parsing is rather simple. Change if needed.
3088 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3089 if (n==strlen(str)) { /* matched */
3093 sscanf(str,"%29[A-Z]%n",func,&n);
3094 if (n==strlen(str)) { /* matched */
3097 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3104 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3105 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3106 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3107 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3108 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3109 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3110 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3112 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3119 switch (gdes->vf.op) {
3121 if (isnan(param)) { /* no parameter given */
3122 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3128 if (param>=0.0 && param<=100.0) {
3129 gdes->vf.param = param;
3130 gdes->vf.val = DNAN; /* undefined */
3131 gdes->vf.when = 0; /* undefined */
3133 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3147 gdes->vf.param = DNAN;
3148 gdes->vf.val = DNAN;
3151 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3168 graph_desc_t *src,*dst;
3172 dst = &im->gdes[gdi];
3173 src = &im->gdes[dst->vidx];
3174 data = src->data + src->ds;
3175 steps = (src->end - src->start) / src->step;
3178 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3185 switch (dst->vf.op) {
3186 case VDEF_PERCENT: {
3187 rrd_value_t * array;
3191 if ((array = malloc(steps*sizeof(double)))==NULL) {
3192 rrd_set_error("malloc VDEV_PERCENT");
3195 for (step=0;step < steps; step++) {
3196 array[step]=data[step*src->ds_cnt];
3198 qsort(array,step,sizeof(double),vdef_percent_compar);
3200 field = (steps-1)*dst->vf.param/100;
3201 dst->vf.val = array[field];
3202 dst->vf.when = 0; /* no time component */
3204 for(step=0;step<steps;step++)
3205 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3211 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3212 if (step == steps) {
3216 dst->vf.val = data[step*src->ds_cnt];
3217 dst->vf.when = src->start + (step+1)*src->step;
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;
3230 case VDEF_AVERAGE: {
3233 for (step=0;step<steps;step++) {
3234 if (finite(data[step*src->ds_cnt])) {
3235 sum += data[step*src->ds_cnt];
3240 if (dst->vf.op == VDEF_TOTAL) {
3241 dst->vf.val = sum*src->step;
3242 dst->vf.when = cnt*src->step; /* not really "when" */
3244 dst->vf.val = sum/cnt;
3245 dst->vf.when = 0; /* no time component */
3255 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3256 if (step == steps) {
3260 dst->vf.val = data[step*src->ds_cnt];
3261 dst->vf.when = src->start + (step+1)*src->step;
3263 while (step != steps) {
3264 if (finite(data[step*src->ds_cnt])) {
3265 if (data[step*src->ds_cnt] < dst->vf.val) {
3266 dst->vf.val = data[step*src->ds_cnt];
3267 dst->vf.when = src->start + (step+1)*src->step;
3274 /* The time value returned here is one step before the
3275 * actual time value. This is the start of the first
3279 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3280 if (step == steps) { /* all entries were NaN */
3284 dst->vf.val = data[step*src->ds_cnt];
3285 dst->vf.when = src->start + step*src->step;
3289 /* The time value returned here is the
3290 * actual time value. This is the end of the last
3294 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3295 if (step < 0) { /* all entries were NaN */
3299 dst->vf.val = data[step*src->ds_cnt];
3300 dst->vf.when = src->start + (step+1)*src->step;
3307 /* NaN < -INF < finite_values < INF */
3309 vdef_percent_compar(a,b)
3312 /* Equality is not returned; this doesn't hurt except
3313 * (maybe) for a little performance.
3316 /* First catch NaN values. They are smallest */
3317 if (isnan( *(double *)a )) return -1;
3318 if (isnan( *(double *)b )) return 1;
3320 /* NaN doesn't reach this part so INF and -INF are extremes.
3321 * The sign from isinf() is compatible with the sign we return
3323 if (isinf( *(double *)a )) return isinf( *(double *)a );
3324 if (isinf( *(double *)b )) return isinf( *(double *)b );
3326 /* If we reach this, both values must be finite */
3327 if ( *(double *)a < *(double *)b ) return -1; else return 1;