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 */
31 char rrd_win_default_font[80];
34 #ifndef RRD_DEFAULT_FONT
36 #define RRD_DEFAULT_FONT "VeraMono.ttf"
37 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf" */
38 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
42 text_prop_t text_prop[] = {
43 { 10.0, RRD_DEFAULT_FONT }, /* default */
44 { 12.0, RRD_DEFAULT_FONT }, /* title */
45 { 8.0, RRD_DEFAULT_FONT }, /* axis */
46 { 10.0, RRD_DEFAULT_FONT }, /* unit */
47 { 10.0, RRD_DEFAULT_FONT } /* legend */
51 {0, TMT_SECOND,30, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
52 {2, TMT_MINUTE,1, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
53 {5, TMT_MINUTE,2, TMT_MINUTE,10, TMT_MINUTE,10, 0,"%H:%M"},
54 {10, TMT_MINUTE,5, TMT_MINUTE,20, TMT_MINUTE,20, 0,"%H:%M"},
55 {30, TMT_MINUTE,10, TMT_HOUR,1, TMT_HOUR,1, 0,"%H:%M"},
56 {60, TMT_MINUTE,30, TMT_HOUR,2, TMT_HOUR,2, 0,"%H:%M"},
57 {180, TMT_HOUR,1, TMT_HOUR,6, TMT_HOUR,6, 0,"%H:%M"},
58 /*{300, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly*/
59 {600, TMT_HOUR,6, TMT_DAY,1, TMT_DAY,1, 24*3600,"%a"},
60 {1800, TMT_HOUR,12, TMT_DAY,1, TMT_DAY,2, 24*3600,"%a"},
61 {3600, TMT_DAY,1, TMT_WEEK,1, TMT_WEEK,1, 7*24*3600,"Week %V"},
62 {3*3600, TMT_WEEK,1, TMT_MONTH,1, TMT_WEEK,2, 7*24*3600,"Week %V"},
63 {6*3600, TMT_MONTH,1, TMT_MONTH,1, TMT_MONTH,1, 30*24*3600,"%b"},
64 {48*3600, TMT_MONTH,1, TMT_MONTH,3, TMT_MONTH,3, 30*24*3600,"%b"},
65 {10*24*3600, TMT_YEAR,1, TMT_YEAR,1, TMT_YEAR,1, 365*24*3600,"%y"},
66 {-1,TMT_MONTH,0,TMT_MONTH,0,TMT_MONTH,0,0,""}
69 /* sensible logarithmic y label intervals ...
70 the first element of each row defines the possible starting points on the
71 y axis ... the other specify the */
73 double yloglab[][12]= {{ 1e9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
74 { 1e3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
75 { 1e1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
76 /* { 1e1, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, */
77 { 1e1, 1, 2.5, 5, 7.5, 0, 0, 0, 0, 0, 0, 0 },
78 { 1e1, 1, 2, 4, 6, 8, 0, 0, 0, 0, 0, 0 },
79 { 1e1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 },
80 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }};
82 /* sensible y label intervals ...*/
100 gfx_color_t graph_col[] = /* default colors */
101 { 0xFFFFFFFF, /* canvas */
102 0xF0F0F0FF, /* background */
103 0xD0D0D0FF, /* shade A */
104 0xA0A0A0FF, /* shade B */
105 0x909090FF, /* grid */
106 0xE05050FF, /* major grid */
107 0x000000FF, /* font */
108 0x000000FF, /* frame */
109 0xFF0000FF /* arrow */
116 # define DPRINT(x) (void)(printf x, printf("\n"))
122 /* initialize with xtr(im,0); */
124 xtr(image_desc_t *im,time_t mytime){
127 pixie = (double) im->xsize / (double)(im->end - im->start);
130 return (int)((double)im->xorigin
131 + pixie * ( mytime - im->start ) );
134 /* translate data values into y coordinates */
136 ytr(image_desc_t *im, double value){
141 pixie = (double) im->ysize / (im->maxval - im->minval);
143 pixie = (double) im->ysize / (log10(im->maxval) - log10(im->minval));
145 } else if(!im->logarithmic) {
146 yval = im->yorigin - pixie * (value - im->minval);
148 if (value < im->minval) {
151 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
154 /* make sure we don't return anything too unreasonable. GD lib can
155 get terribly slow when drawing lines outside its scope. This is
156 especially problematic in connection with the rigid option */
158 /* keep yval as-is */
159 } else if (yval > im->yorigin) {
160 yval = im->yorigin+2;
161 } else if (yval < im->yorigin - im->ysize){
162 yval = im->yorigin - im->ysize - 2;
169 /* conversion function for symbolic entry names */
172 #define conv_if(VV,VVV) \
173 if (strcmp(#VV, string) == 0) return VVV ;
175 enum gf_en gf_conv(char *string){
177 conv_if(PRINT,GF_PRINT)
178 conv_if(GPRINT,GF_GPRINT)
179 conv_if(COMMENT,GF_COMMENT)
180 conv_if(HRULE,GF_HRULE)
181 conv_if(VRULE,GF_VRULE)
182 conv_if(LINE,GF_LINE)
183 conv_if(AREA,GF_AREA)
184 conv_if(STACK,GF_STACK)
185 conv_if(TICK,GF_TICK)
187 conv_if(CDEF,GF_CDEF)
188 conv_if(VDEF,GF_VDEF)
189 conv_if(PART,GF_PART)
190 conv_if(XPORT,GF_XPORT)
195 enum gfx_if_en if_conv(char *string){
205 enum tmt_en tmt_conv(char *string){
207 conv_if(SECOND,TMT_SECOND)
208 conv_if(MINUTE,TMT_MINUTE)
209 conv_if(HOUR,TMT_HOUR)
211 conv_if(WEEK,TMT_WEEK)
212 conv_if(MONTH,TMT_MONTH)
213 conv_if(YEAR,TMT_YEAR)
217 enum grc_en grc_conv(char *string){
219 conv_if(BACK,GRC_BACK)
220 conv_if(CANVAS,GRC_CANVAS)
221 conv_if(SHADEA,GRC_SHADEA)
222 conv_if(SHADEB,GRC_SHADEB)
223 conv_if(GRID,GRC_GRID)
224 conv_if(MGRID,GRC_MGRID)
225 conv_if(FONT,GRC_FONT)
226 conv_if(FRAME,GRC_FRAME)
227 conv_if(ARROW,GRC_ARROW)
232 enum text_prop_en text_prop_conv(char *string){
234 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
235 conv_if(TITLE,TEXT_PROP_TITLE)
236 conv_if(AXIS,TEXT_PROP_AXIS)
237 conv_if(UNIT,TEXT_PROP_UNIT)
238 conv_if(LEGEND,TEXT_PROP_LEGEND)
246 im_free(image_desc_t *im)
250 if (im == NULL) return 0;
251 for(i=0;i<(unsigned)im->gdes_c;i++){
252 if (im->gdes[i].data_first){
253 /* careful here, because a single pointer can occur several times */
254 free (im->gdes[i].data);
255 if (im->gdes[i].ds_namv){
256 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
257 free(im->gdes[i].ds_namv[ii]);
258 free(im->gdes[i].ds_namv);
261 free (im->gdes[i].p_data);
262 free (im->gdes[i].rpnp);
265 gfx_destroy(im->canvas);
269 /* find SI magnitude symbol for the given number*/
272 image_desc_t *im, /* image description */
279 char *symbol[] = {"a", /* 10e-18 Atto */
280 "f", /* 10e-15 Femto */
281 "p", /* 10e-12 Pico */
282 "n", /* 10e-9 Nano */
283 "u", /* 10e-6 Micro */
284 "m", /* 10e-3 Milli */
289 "T", /* 10e12 Tera */
290 "P", /* 10e15 Peta */
296 if (*value == 0.0 || isnan(*value) ) {
300 sindex = floor(log(fabs(*value))/log((double)im->base));
301 *magfact = pow((double)im->base, (double)sindex);
302 (*value) /= (*magfact);
304 if ( sindex <= symbcenter && sindex >= -symbcenter) {
305 (*symb_ptr) = symbol[sindex+symbcenter];
313 /* find SI magnitude symbol for the numbers on the y-axis*/
316 image_desc_t *im /* image description */
320 char symbol[] = {'a', /* 10e-18 Atto */
321 'f', /* 10e-15 Femto */
322 'p', /* 10e-12 Pico */
323 'n', /* 10e-9 Nano */
324 'u', /* 10e-6 Micro */
325 'm', /* 10e-3 Milli */
330 'T', /* 10e12 Tera */
331 'P', /* 10e15 Peta */
337 if (im->unitsexponent != 9999) {
338 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
339 digits = floor(im->unitsexponent / 3);
341 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
343 im->magfact = pow((double)im->base , digits);
346 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
349 if ( ((digits+symbcenter) < sizeof(symbol)) &&
350 ((digits+symbcenter) >= 0) )
351 im->symbol = symbol[(int)digits+symbcenter];
356 /* move min and max values around to become sensible */
359 expand_range(image_desc_t *im)
361 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
362 600.0,500.0,400.0,300.0,250.0,
363 200.0,125.0,100.0,90.0,80.0,
364 75.0,70.0,60.0,50.0,40.0,30.0,
365 25.0,20.0,10.0,9.0,8.0,
366 7.0,6.0,5.0,4.0,3.5,3.0,
367 2.5,2.0,1.8,1.5,1.2,1.0,
368 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
370 double scaled_min,scaled_max;
377 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
378 im->minval,im->maxval,im->magfact);
381 if (isnan(im->ygridstep)){
382 if(im->extra_flags & ALTAUTOSCALE) {
383 /* measure the amplitude of the function. Make sure that
384 graph boundaries are slightly higher then max/min vals
385 so we can see amplitude on the graph */
388 delt = im->maxval - im->minval;
390 fact = 2.0 * pow(10.0,
391 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
393 adj = (fact - delt) * 0.55;
395 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
401 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
402 /* measure the amplitude of the function. Make sure that
403 graph boundaries are slightly higher than max vals
404 so we can see amplitude on the graph */
405 adj = (im->maxval - im->minval) * 0.1;
409 scaled_min = im->minval / im->magfact;
410 scaled_max = im->maxval / im->magfact;
412 for (i=1; sensiblevalues[i] > 0; i++){
413 if (sensiblevalues[i-1]>=scaled_min &&
414 sensiblevalues[i]<=scaled_min)
415 im->minval = sensiblevalues[i]*(im->magfact);
417 if (-sensiblevalues[i-1]<=scaled_min &&
418 -sensiblevalues[i]>=scaled_min)
419 im->minval = -sensiblevalues[i-1]*(im->magfact);
421 if (sensiblevalues[i-1] >= scaled_max &&
422 sensiblevalues[i] <= scaled_max)
423 im->maxval = sensiblevalues[i-1]*(im->magfact);
425 if (-sensiblevalues[i-1]<=scaled_max &&
426 -sensiblevalues[i] >=scaled_max)
427 im->maxval = -sensiblevalues[i]*(im->magfact);
431 /* adjust min and max to the grid definition if there is one */
432 im->minval = (double)im->ylabfact * im->ygridstep *
433 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
434 im->maxval = (double)im->ylabfact * im->ygridstep *
435 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
439 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
440 im->minval,im->maxval,im->magfact);
445 apply_gridfit(image_desc_t *im)
447 if (isnan(im->minval) || isnan(im->maxval))
450 if (im->logarithmic) {
451 double ya, yb, ypix, ypixfrac;
452 double log10_range = log10(im->maxval) - log10(im->minval);
453 ya = pow((double)10, floor(log10(im->minval)));
454 while (ya < im->minval)
457 return; /* don't have y=10^x gridline */
459 if (yb <= im->maxval) {
460 /* we have at least 2 y=10^x gridlines.
461 Make sure distance between them in pixels
462 are an integer by expanding im->maxval */
463 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
464 double factor = y_pixel_delta / floor(y_pixel_delta);
465 double new_log10_range = factor * log10_range;
466 double new_ymax_log10 = log10(im->minval) + new_log10_range;
467 im->maxval = pow(10, new_ymax_log10);
468 ytr(im, DNAN); /* reset precalc */
469 log10_range = log10(im->maxval) - log10(im->minval);
471 /* make sure first y=10^x gridline is located on
472 integer pixel position by moving scale slightly
473 downwards (sub-pixel movement) */
474 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
475 ypixfrac = ypix - floor(ypix);
476 if (ypixfrac > 0 && ypixfrac < 1) {
477 double yfrac = ypixfrac / im->ysize;
478 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
479 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
480 ytr(im, DNAN); /* reset precalc */
483 /* Make sure we have an integer pixel distance between
484 each minor gridline */
485 double ypos1 = ytr(im, im->minval);
486 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
487 double y_pixel_delta = ypos1 - ypos2;
488 double factor = y_pixel_delta / floor(y_pixel_delta);
489 double new_range = factor * (im->maxval - im->minval);
490 double gridstep = im->ygrid_scale.gridstep;
491 double minor_y, minor_y_px, minor_y_px_frac;
492 im->maxval = im->minval + new_range;
493 ytr(im, DNAN); /* reset precalc */
494 /* make sure first minor gridline is on integer pixel y coord */
495 minor_y = gridstep * floor(im->minval / gridstep);
496 while (minor_y < im->minval)
498 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
499 minor_y_px_frac = minor_y_px - floor(minor_y_px);
500 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
501 double yfrac = minor_y_px_frac / im->ysize;
502 double range = im->maxval - im->minval;
503 im->minval = im->minval - yfrac * range;
504 im->maxval = im->maxval - yfrac * range;
505 ytr(im, DNAN); /* reset precalc */
507 calc_horizontal_grid(im); /* recalc with changed im->maxval */
511 /* reduce data reimplementation by Alex */
515 enum cf_en cf, /* which consolidation function ?*/
516 unsigned long cur_step, /* step the data currently is in */
517 time_t *start, /* start, end and step as requested ... */
518 time_t *end, /* ... by the application will be ... */
519 unsigned long *step, /* ... adjusted to represent reality */
520 unsigned long *ds_cnt, /* number of data sources in file */
521 rrd_value_t **data) /* two dimensional array containing the data */
523 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
524 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
525 rrd_value_t *srcptr,*dstptr;
527 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
530 row_cnt = ((*end)-(*start))/cur_step;
536 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
537 row_cnt,reduce_factor,*start,*end,cur_step);
538 for (col=0;col<row_cnt;col++) {
539 printf("time %10lu: ",*start+(col+1)*cur_step);
540 for (i=0;i<*ds_cnt;i++)
541 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
546 /* We have to combine [reduce_factor] rows of the source
547 ** into one row for the destination. Doing this we also
548 ** need to take care to combine the correct rows. First
549 ** alter the start and end time so that they are multiples
550 ** of the new step time. We cannot reduce the amount of
551 ** time so we have to move the end towards the future and
552 ** the start towards the past.
554 end_offset = (*end) % (*step);
555 start_offset = (*start) % (*step);
557 /* If there is a start offset (which cannot be more than
558 ** one destination row), skip the appropriate number of
559 ** source rows and one destination row. The appropriate
560 ** number is what we do know (start_offset/cur_step) of
561 ** the new interval (*step/cur_step aka reduce_factor).
564 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
565 printf("row_cnt before: %lu\n",row_cnt);
568 (*start) = (*start)-start_offset;
569 skiprows=reduce_factor-start_offset/cur_step;
570 srcptr+=skiprows* *ds_cnt;
571 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
575 printf("row_cnt between: %lu\n",row_cnt);
578 /* At the end we have some rows that are not going to be
579 ** used, the amount is end_offset/cur_step
582 (*end) = (*end)-end_offset+(*step);
583 skiprows = end_offset/cur_step;
587 printf("row_cnt after: %lu\n",row_cnt);
590 /* Sanity check: row_cnt should be multiple of reduce_factor */
591 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
593 if (row_cnt%reduce_factor) {
594 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
595 row_cnt,reduce_factor);
596 printf("BUG in reduce_data()\n");
600 /* Now combine reduce_factor intervals at a time
601 ** into one interval for the destination.
604 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
605 for (col=0;col<(*ds_cnt);col++) {
606 rrd_value_t newval=DNAN;
607 unsigned long validval=0;
609 for (i=0;i<reduce_factor;i++) {
610 if (isnan(srcptr[i*(*ds_cnt)+col])) {
614 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
622 newval += srcptr[i*(*ds_cnt)+col];
625 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
628 /* an interval contains a failure if any subintervals contained a failure */
630 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
633 newval = srcptr[i*(*ds_cnt)+col];
638 if (validval == 0){newval = DNAN;} else{
656 srcptr+=(*ds_cnt)*reduce_factor;
657 row_cnt-=reduce_factor;
659 /* If we had to alter the endtime, we didn't have enough
660 ** source rows to fill the last row. Fill it with NaN.
662 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
664 row_cnt = ((*end)-(*start))/ *step;
666 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
667 row_cnt,*start,*end,*step);
668 for (col=0;col<row_cnt;col++) {
669 printf("time %10lu: ",*start+(col+1)*(*step));
670 for (i=0;i<*ds_cnt;i++)
671 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
678 /* get the data required for the graphs from the
682 data_fetch(image_desc_t *im )
687 /* pull the data from the log files ... */
688 for (i=0;i<im->gdes_c;i++){
689 /* only GF_DEF elements fetch data */
690 if (im->gdes[i].gf != GF_DEF)
694 /* do we have it already ?*/
695 for (ii=0;ii<i;ii++) {
696 if (im->gdes[ii].gf != GF_DEF)
698 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
699 && (im->gdes[i].cf == im->gdes[ii].cf)
700 && (im->gdes[i].start == im->gdes[ii].start)
701 && (im->gdes[i].end == im->gdes[ii].end)
702 && (im->gdes[i].step == im->gdes[ii].step)) {
703 /* OK, the data is already there.
704 ** Just copy the header portion
706 im->gdes[i].start = im->gdes[ii].start;
707 im->gdes[i].end = im->gdes[ii].end;
708 im->gdes[i].step = im->gdes[ii].step;
709 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
710 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
711 im->gdes[i].data = im->gdes[ii].data;
712 im->gdes[i].data_first = 0;
719 unsigned long ft_step = im->gdes[i].step ;
721 if((rrd_fetch_fn(im->gdes[i].rrd,
727 &im->gdes[i].ds_namv,
728 &im->gdes[i].data)) == -1){
731 im->gdes[i].data_first = 1;
733 if (ft_step < im->gdes[i].step) {
734 reduce_data(im->gdes[i].cf,
742 im->gdes[i].step = ft_step;
746 /* lets see if the required data source is realy there */
747 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
748 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
751 if (im->gdes[i].ds== -1){
752 rrd_set_error("No DS called '%s' in '%s'",
753 im->gdes[i].ds_nam,im->gdes[i].rrd);
761 /* evaluate the expressions in the CDEF functions */
763 /*************************************************************
765 *************************************************************/
768 find_var_wrapper(void *arg1, char *key)
770 return find_var((image_desc_t *) arg1, key);
773 /* find gdes containing var*/
775 find_var(image_desc_t *im, char *key){
777 for(ii=0;ii<im->gdes_c-1;ii++){
778 if((im->gdes[ii].gf == GF_DEF
779 || im->gdes[ii].gf == GF_VDEF
780 || im->gdes[ii].gf == GF_CDEF)
781 && (strcmp(im->gdes[ii].vname,key) == 0)){
788 /* find the largest common denominator for all the numbers
789 in the 0 terminated num array */
794 for (i=0;num[i+1]!=0;i++){
796 rest=num[i] % num[i+1];
797 num[i]=num[i+1]; num[i+1]=rest;
801 /* return i==0?num[i]:num[i-1]; */
805 /* run the rpn calculator on all the VDEF and CDEF arguments */
807 data_calc( image_desc_t *im){
811 long *steparray, rpi;
816 rpnstack_init(&rpnstack);
818 for (gdi=0;gdi<im->gdes_c;gdi++){
819 /* Look for GF_VDEF and GF_CDEF in the same loop,
820 * so CDEFs can use VDEFs and vice versa
822 switch (im->gdes[gdi].gf) {
826 /* A VDEF has no DS. This also signals other parts
827 * of rrdtool that this is a VDEF value, not a CDEF.
829 im->gdes[gdi].ds_cnt = 0;
830 if (vdef_calc(im,gdi)) {
831 rrd_set_error("Error processing VDEF '%s'"
834 rpnstack_free(&rpnstack);
839 im->gdes[gdi].ds_cnt = 1;
840 im->gdes[gdi].ds = 0;
841 im->gdes[gdi].data_first = 1;
842 im->gdes[gdi].start = 0;
843 im->gdes[gdi].end = 0;
848 /* Find the variables in the expression.
849 * - VDEF variables are substituted by their values
850 * and the opcode is changed into OP_NUMBER.
851 * - CDEF variables are analized for their step size,
852 * the lowest common denominator of all the step
853 * sizes of the data sources involved is calculated
854 * and the resulting number is the step size for the
855 * resulting data source.
857 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
858 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
859 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
860 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
861 if (im->gdes[ptr].ds_cnt == 0) {
863 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
865 im->gdes[ptr].vname);
866 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
868 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
869 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
872 rrd_realloc(steparray,
873 (++stepcnt+1)*sizeof(*steparray)))==NULL){
874 rrd_set_error("realloc steparray");
875 rpnstack_free(&rpnstack);
879 steparray[stepcnt-1] = im->gdes[ptr].step;
881 /* adjust start and end of cdef (gdi) so
882 * that it runs from the latest start point
883 * to the earliest endpoint of any of the
884 * rras involved (ptr)
886 if(im->gdes[gdi].start < im->gdes[ptr].start)
887 im->gdes[gdi].start = im->gdes[ptr].start;
889 if(im->gdes[gdi].end == 0 ||
890 im->gdes[gdi].end > im->gdes[ptr].end)
891 im->gdes[gdi].end = im->gdes[ptr].end;
893 /* store pointer to the first element of
894 * the rra providing data for variable,
895 * further save step size and data source
898 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
899 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
900 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
902 /* backoff the *.data ptr; this is done so
903 * rpncalc() function doesn't have to treat
904 * the first case differently
906 } /* if ds_cnt != 0 */
907 } /* if OP_VARIABLE */
908 } /* loop through all rpi */
910 /* move the data pointers to the correct period */
911 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
912 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
913 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
914 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
915 if(im->gdes[gdi].start > im->gdes[ptr].start) {
916 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
922 if(steparray == NULL){
923 rrd_set_error("rpn expressions without DEF"
924 " or CDEF variables are not supported");
925 rpnstack_free(&rpnstack);
928 steparray[stepcnt]=0;
929 /* Now find the resulting step. All steps in all
930 * used RRAs have to be visited
932 im->gdes[gdi].step = lcd(steparray);
934 if((im->gdes[gdi].data = malloc((
935 (im->gdes[gdi].end-im->gdes[gdi].start)
936 / im->gdes[gdi].step)
937 * sizeof(double)))==NULL){
938 rrd_set_error("malloc im->gdes[gdi].data");
939 rpnstack_free(&rpnstack);
943 /* Step through the new cdef results array and
944 * calculate the values
946 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
947 now<=im->gdes[gdi].end;
948 now += im->gdes[gdi].step)
950 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
952 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
953 * in this case we are advancing by timesteps;
954 * we use the fact that time_t is a synonym for long
956 if (rpn_calc(rpnp,&rpnstack,(long) now,
957 im->gdes[gdi].data,++dataidx) == -1) {
958 /* rpn_calc sets the error string */
959 rpnstack_free(&rpnstack);
962 } /* enumerate over time steps within a CDEF */
967 } /* enumerate over CDEFs */
968 rpnstack_free(&rpnstack);
972 /* massage data so, that we get one value for each x coordinate in the graph */
974 data_proc( image_desc_t *im ){
976 double pixstep = (double)(im->end-im->start)
977 /(double)im->xsize; /* how much time
978 passes in one pixel */
980 double minval=DNAN,maxval=DNAN;
982 unsigned long gr_time;
984 /* memory for the processed data */
985 for(i=0;i<im->gdes_c;i++) {
986 if((im->gdes[i].gf==GF_LINE) ||
987 (im->gdes[i].gf==GF_AREA) ||
988 (im->gdes[i].gf==GF_TICK) ||
989 (im->gdes[i].gf==GF_STACK)) {
990 if((im->gdes[i].p_data = malloc((im->xsize +1)
991 * sizeof(rrd_value_t)))==NULL){
992 rrd_set_error("malloc data_proc");
998 for (i=0;i<im->xsize;i++) { /* for each pixel */
1000 gr_time = im->start+pixstep*i; /* time of the current step */
1003 for (ii=0;ii<im->gdes_c;ii++) {
1005 switch (im->gdes[ii].gf) {
1009 if (!im->gdes[ii].stack)
1012 value = im->gdes[ii].yrule;
1013 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1014 /* The time of the data doesn't necessarily match
1015 ** the time of the graph. Beware.
1017 vidx = im->gdes[ii].vidx;
1018 if ( (gr_time >= im->gdes[vidx].start) &&
1019 (gr_time <= im->gdes[vidx].end) ) {
1020 value = im->gdes[vidx].data[
1021 (unsigned long) floor(
1022 (double)(gr_time - im->gdes[vidx].start)
1023 / im->gdes[vidx].step)
1024 * im->gdes[vidx].ds_cnt
1032 if (! isnan(value)) {
1034 im->gdes[ii].p_data[i] = paintval;
1035 /* GF_TICK: the data values are not
1036 ** relevant for min and max
1038 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ) {
1039 if (isnan(minval) || paintval < minval)
1041 if (isnan(maxval) || paintval > maxval)
1045 im->gdes[ii].p_data[i] = DNAN;
1054 /* if min or max have not been asigned a value this is because
1055 there was no data in the graph ... this is not good ...
1056 lets set these to dummy values then ... */
1058 if (isnan(minval)) minval = 0.0;
1059 if (isnan(maxval)) maxval = 1.0;
1061 /* adjust min and max values */
1062 if (isnan(im->minval)
1063 /* don't adjust low-end with log scale */
1064 || ((!im->logarithmic && !im->rigid) && im->minval > minval)
1066 im->minval = minval;
1067 if (isnan(im->maxval)
1068 || (!im->rigid && im->maxval < maxval)
1070 if (im->logarithmic)
1071 im->maxval = maxval * 1.1;
1073 im->maxval = maxval;
1075 /* make sure min and max are not equal */
1076 if (im->minval == im->maxval) {
1078 if (! im->logarithmic) {
1081 /* make sure min and max are not both zero */
1082 if (im->maxval == 0.0) {
1091 /* identify the point where the first gridline, label ... gets placed */
1095 time_t start, /* what is the initial time */
1096 enum tmt_en baseint, /* what is the basic interval */
1097 long basestep /* how many if these do we jump a time */
1101 localtime_r(&start, &tm);
1104 tm.tm_sec -= tm.tm_sec % basestep; break;
1107 tm.tm_min -= tm.tm_min % basestep;
1112 tm.tm_hour -= tm.tm_hour % basestep; break;
1114 /* we do NOT look at the basestep for this ... */
1117 tm.tm_hour = 0; break;
1119 /* we do NOT look at the basestep for this ... */
1123 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1124 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1131 tm.tm_mon -= tm.tm_mon % basestep; break;
1139 tm.tm_year -= (tm.tm_year+1900) % basestep;
1144 /* identify the point where the next gridline, label ... gets placed */
1147 time_t current, /* what is the initial time */
1148 enum tmt_en baseint, /* what is the basic interval */
1149 long basestep /* how many if these do we jump a time */
1154 localtime_r(¤t, &tm);
1158 tm.tm_sec += basestep; break;
1160 tm.tm_min += basestep; break;
1162 tm.tm_hour += basestep; break;
1164 tm.tm_mday += basestep; break;
1166 tm.tm_mday += 7*basestep; break;
1168 tm.tm_mon += basestep; break;
1170 tm.tm_year += basestep;
1172 madetime = mktime(&tm);
1173 } while (madetime == -1); /* this is necessary to skip impssible times
1174 like the daylight saving time skips */
1180 /* calculate values required for PRINT and GPRINT functions */
1183 print_calc(image_desc_t *im, char ***prdata)
1185 long i,ii,validsteps;
1188 int graphelement = 0;
1191 double magfact = -1;
1195 if (im->imginfo) prlines++;
1196 for(i=0;i<im->gdes_c;i++){
1197 switch(im->gdes[i].gf){
1200 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1201 rrd_set_error("realloc prdata");
1205 /* PRINT and GPRINT can now print VDEF generated values.
1206 * There's no need to do any calculations on them as these
1207 * calculations were already made.
1209 vidx = im->gdes[i].vidx;
1210 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1211 printval = im->gdes[vidx].vf.val;
1212 printtime = im->gdes[vidx].vf.when;
1213 } else { /* need to calculate max,min,avg etcetera */
1214 max_ii =((im->gdes[vidx].end
1215 - im->gdes[vidx].start)
1216 / im->gdes[vidx].step
1217 * im->gdes[vidx].ds_cnt);
1220 for( ii=im->gdes[vidx].ds;
1222 ii+=im->gdes[vidx].ds_cnt){
1223 if (! finite(im->gdes[vidx].data[ii]))
1225 if (isnan(printval)){
1226 printval = im->gdes[vidx].data[ii];
1231 switch (im->gdes[i].cf){
1234 case CF_DEVSEASONAL:
1238 printval += im->gdes[vidx].data[ii];
1241 printval = min( printval, im->gdes[vidx].data[ii]);
1245 printval = max( printval, im->gdes[vidx].data[ii]);
1248 printval = im->gdes[vidx].data[ii];
1251 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1252 if (validsteps > 1) {
1253 printval = (printval / validsteps);
1256 } /* prepare printval */
1258 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1259 char ctime_buf[128]; /* PS: for ctime_r, must be >= 26 chars */
1260 if (im->gdes[i].gf == GF_PRINT){
1261 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1262 sprintf((*prdata)[prlines-2],"%s (%lu)",
1263 ctime_r(&printtime,ctime_buf),printtime);
1264 (*prdata)[prlines-1] = NULL;
1266 sprintf(im->gdes[i].legend,"%s (%lu)",
1267 ctime_r(&printtime,ctime_buf),printtime);
1271 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1272 /* Magfact is set to -1 upon entry to print_calc. If it
1273 * is still less than 0, then we need to run auto_scale.
1274 * Otherwise, put the value into the correct units. If
1275 * the value is 0, then do not set the symbol or magnification
1276 * so next the calculation will be performed again. */
1277 if (magfact < 0.0) {
1278 auto_scale(im,&printval,&si_symb,&magfact);
1279 if (printval == 0.0)
1282 printval /= magfact;
1284 *(++percent_s) = 's';
1285 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1286 auto_scale(im,&printval,&si_symb,&magfact);
1289 if (im->gdes[i].gf == GF_PRINT){
1290 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1291 (*prdata)[prlines-1] = NULL;
1292 if (bad_format(im->gdes[i].format)) {
1293 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1296 #ifdef HAVE_SNPRINTF
1297 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1299 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1304 if (bad_format(im->gdes[i].format)) {
1305 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1308 #ifdef HAVE_SNPRINTF
1309 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1311 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1334 return graphelement;
1338 /* place legends with color spots */
1340 leg_place(image_desc_t *im)
1343 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1344 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1345 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1346 int fill=0, fill_last;
1348 int leg_x = border, leg_y = im->yimg;
1352 char prt_fctn; /*special printfunctions */
1355 if( !(im->extra_flags & NOLEGEND) ) {
1356 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1357 rrd_set_error("malloc for legspace");
1361 for(i=0;i<im->gdes_c;i++){
1364 /* hid legends for rules which are not displayed */
1366 if (im->gdes[i].gf == GF_HRULE &&
1367 (im->gdes[i].yrule < im->minval || im->gdes[i].yrule > im->maxval))
1368 im->gdes[i].legend[0] = '\0';
1370 if (im->gdes[i].gf == GF_VRULE &&
1371 (im->gdes[i].xrule < im->start || im->gdes[i].xrule > im->end))
1372 im->gdes[i].legend[0] = '\0';
1374 leg_cc = strlen(im->gdes[i].legend);
1376 /* is there a controle code ant the end of the legend string ? */
1377 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1378 prt_fctn = im->gdes[i].legend[leg_cc-1];
1380 im->gdes[i].legend[leg_cc] = '\0';
1384 /* remove exess space */
1385 while (prt_fctn=='g' &&
1387 im->gdes[i].legend[leg_cc-1]==' '){
1389 im->gdes[i].legend[leg_cc]='\0';
1392 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1395 /* no interleg space if string ends in \g */
1396 fill += legspace[i];
1398 if (im->gdes[i].gf != GF_GPRINT &&
1399 im->gdes[i].gf != GF_COMMENT) {
1402 fill += gfx_get_text_width(im->canvas, fill+border,
1403 im->text_prop[TEXT_PROP_LEGEND].font,
1404 im->text_prop[TEXT_PROP_LEGEND].size,
1406 im->gdes[i].legend, 0);
1411 /* who said there was a special tag ... ?*/
1412 if (prt_fctn=='g') {
1415 if (prt_fctn == '\0') {
1416 if (i == im->gdes_c -1 ) prt_fctn ='l';
1418 /* is it time to place the legends ? */
1419 if (fill > im->ximg - 2*border){
1434 if (prt_fctn != '\0'){
1436 if (leg_c >= 2 && prt_fctn == 'j') {
1437 glue = (im->ximg - fill - 2* border) / (leg_c-1);
1441 if (prt_fctn =='c') leg_x = (im->ximg - fill) / 2.0;
1442 if (prt_fctn =='r') leg_x = im->ximg - fill - border;
1444 for(ii=mark;ii<=i;ii++){
1445 if(im->gdes[ii].legend[0]=='\0')
1447 im->gdes[ii].leg_x = leg_x;
1448 im->gdes[ii].leg_y = leg_y;
1450 gfx_get_text_width(im->canvas, leg_x,
1451 im->text_prop[TEXT_PROP_LEGEND].font,
1452 im->text_prop[TEXT_PROP_LEGEND].size,
1454 im->gdes[ii].legend, 0)
1457 if (im->gdes[ii].gf != GF_GPRINT &&
1458 im->gdes[ii].gf != GF_COMMENT)
1461 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1462 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1474 /* create a grid on the graph. it determines what to do
1475 from the values of xsize, start and end */
1477 /* the xaxis labels are determined from the number of seconds per pixel
1478 in the requested graph */
1483 calc_horizontal_grid(image_desc_t *im)
1489 int decimals, fractionals;
1491 im->ygrid_scale.labfact=2;
1493 range = im->maxval - im->minval;
1494 scaledrange = range / im->magfact;
1496 /* does the scale of this graph make it impossible to put lines
1497 on it? If so, give up. */
1498 if (isnan(scaledrange)) {
1502 /* find grid spaceing */
1504 if(isnan(im->ygridstep)){
1505 if(im->extra_flags & ALTYGRID) {
1506 /* find the value with max number of digits. Get number of digits */
1507 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1508 if(decimals <= 0) /* everything is small. make place for zero */
1511 fractionals = floor(log10(range));
1512 if(fractionals < 0) /* small amplitude. */
1513 sprintf(im->ygrid_scale.labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1515 sprintf(im->ygrid_scale.labfmt, "%%%d.1f", decimals + 1);
1516 im->ygrid_scale.gridstep = pow((double)10, (double)fractionals);
1517 if(im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1518 im->ygrid_scale.gridstep = 0.1;
1519 /* should have at least 5 lines but no more then 15 */
1520 if(range/im->ygrid_scale.gridstep < 5)
1521 im->ygrid_scale.gridstep /= 10;
1522 if(range/im->ygrid_scale.gridstep > 15)
1523 im->ygrid_scale.gridstep *= 10;
1524 if(range/im->ygrid_scale.gridstep > 5) {
1525 im->ygrid_scale.labfact = 1;
1526 if(range/im->ygrid_scale.gridstep > 8)
1527 im->ygrid_scale.labfact = 2;
1530 im->ygrid_scale.gridstep /= 5;
1531 im->ygrid_scale.labfact = 5;
1535 for(i=0;ylab[i].grid > 0;i++){
1536 pixel = im->ysize / (scaledrange / ylab[i].grid);
1537 if (gridind == -1 && pixel > 5) {
1544 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1545 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
1550 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
1553 im->ygrid_scale.gridstep = im->ygridstep;
1554 im->ygrid_scale.labfact = im->ylabfact;
1559 int draw_horizontal_grid(image_desc_t *im)
1563 char graph_label[100];
1564 double X0=im->xorigin;
1565 double X1=im->xorigin+im->xsize;
1567 int sgrid = (int)( im->minval / im->ygrid_scale.gridstep - 1);
1568 int egrid = (int)( im->maxval / im->ygrid_scale.gridstep + 1);
1569 scaledstep = im->ygrid_scale.gridstep/im->magfact;
1570 for (i = sgrid; i <= egrid; i++){
1571 double Y0=ytr(im,im->ygrid_scale.gridstep*i);
1572 if ( Y0 >= im->yorigin-im->ysize
1573 && Y0 <= im->yorigin){
1574 if(i % im->ygrid_scale.labfact == 0){
1575 if (i==0 || im->symbol == ' ') {
1577 if(im->extra_flags & ALTYGRID) {
1578 sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*i);
1581 sprintf(graph_label,"%4.1f",scaledstep*i);
1584 sprintf(graph_label,"%4.0f",scaledstep*i);
1588 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1590 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1594 gfx_new_text ( im->canvas,
1595 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1596 im->graph_col[GRC_FONT],
1597 im->text_prop[TEXT_PROP_AXIS].font,
1598 im->text_prop[TEXT_PROP_AXIS].size,
1599 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1601 gfx_new_dashed_line ( im->canvas,
1604 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1605 im->grid_dash_on, im->grid_dash_off);
1607 } else if (!(im->extra_flags & NOMINOR)) {
1608 gfx_new_dashed_line ( im->canvas,
1611 GRIDWIDTH, im->graph_col[GRC_GRID],
1612 im->grid_dash_on, im->grid_dash_off);
1620 /* logaritmic horizontal grid */
1622 horizontal_log_grid(image_desc_t *im)
1626 int minoridx=0, majoridx=0;
1627 char graph_label[100];
1629 double value, pixperstep, minstep;
1631 /* find grid spaceing */
1632 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1634 if (isnan(pixpex)) {
1638 for(i=0;yloglab[i][0] > 0;i++){
1639 minstep = log10(yloglab[i][0]);
1640 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1641 if(yloglab[i][ii+2]==0){
1642 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1646 pixperstep = pixpex * minstep;
1647 if(pixperstep > 5){minoridx = i;}
1648 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1652 X1=im->xorigin+im->xsize;
1653 /* paint minor grid */
1654 for (value = pow((double)10, log10(im->minval)
1655 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1656 value <= im->maxval;
1657 value *= yloglab[minoridx][0]){
1658 if (value < im->minval) continue;
1660 while(yloglab[minoridx][++i] > 0){
1661 Y0 = ytr(im,value * yloglab[minoridx][i]);
1662 if (Y0 <= im->yorigin - im->ysize) break;
1663 gfx_new_dashed_line ( im->canvas,
1666 GRIDWIDTH, im->graph_col[GRC_GRID],
1667 im->grid_dash_on, im->grid_dash_off);
1671 /* paint major grid and labels*/
1672 for (value = pow((double)10, log10(im->minval)
1673 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1674 value <= im->maxval;
1675 value *= yloglab[majoridx][0]){
1676 if (value < im->minval) continue;
1678 while(yloglab[majoridx][++i] > 0){
1679 Y0 = ytr(im,value * yloglab[majoridx][i]);
1680 if (Y0 <= im->yorigin - im->ysize) break;
1681 gfx_new_dashed_line ( im->canvas,
1684 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1685 im->grid_dash_on, im->grid_dash_off);
1687 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1688 gfx_new_text ( im->canvas,
1689 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1690 im->graph_col[GRC_FONT],
1691 im->text_prop[TEXT_PROP_AXIS].font,
1692 im->text_prop[TEXT_PROP_AXIS].size,
1693 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1705 int xlab_sel; /* which sort of label and grid ? */
1706 time_t ti, tilab, timajor;
1708 char graph_label[100];
1709 double X0,Y0,Y1; /* points for filled graph and more*/
1712 /* the type of time grid is determined by finding
1713 the number of seconds per pixel in the graph */
1716 if(im->xlab_user.minsec == -1){
1717 factor=(im->end - im->start)/im->xsize;
1719 while ( xlab[xlab_sel+1].minsec != -1
1720 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1721 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1722 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1723 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1724 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1725 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1726 im->xlab_user.labst = xlab[xlab_sel].labst;
1727 im->xlab_user.precis = xlab[xlab_sel].precis;
1728 im->xlab_user.stst = xlab[xlab_sel].stst;
1731 /* y coords are the same for every line ... */
1733 Y1 = im->yorigin-im->ysize;
1736 /* paint the minor grid */
1737 if (!(im->extra_flags & NOMINOR))
1739 for(ti = find_first_time(im->start,
1740 im->xlab_user.gridtm,
1741 im->xlab_user.gridst),
1742 timajor = find_first_time(im->start,
1743 im->xlab_user.mgridtm,
1744 im->xlab_user.mgridst);
1746 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1748 /* are we inside the graph ? */
1749 if (ti < im->start || ti > im->end) continue;
1750 while (timajor < ti) {
1751 timajor = find_next_time(timajor,
1752 im->xlab_user.mgridtm, im->xlab_user.mgridst);
1754 if (ti == timajor) continue; /* skip as falls on major grid line */
1756 gfx_new_dashed_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH,
1757 im->graph_col[GRC_GRID],
1758 im->grid_dash_on, im->grid_dash_off);
1763 /* paint the major grid */
1764 for(ti = find_first_time(im->start,
1765 im->xlab_user.mgridtm,
1766 im->xlab_user.mgridst);
1768 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1770 /* are we inside the graph ? */
1771 if (ti < im->start || ti > im->end) continue;
1773 gfx_new_dashed_line(im->canvas,X0,Y0+3, X0,Y1-2,MGRIDWIDTH,
1774 im->graph_col[GRC_MGRID],
1775 im->grid_dash_on, im->grid_dash_off);
1778 /* paint the labels below the graph */
1779 for(ti = find_first_time(im->start,
1780 im->xlab_user.labtm,
1781 im->xlab_user.labst);
1783 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1785 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1786 /* are we inside the graph ? */
1787 if (ti < im->start || ti > im->end) continue;
1790 localtime_r(&tilab, &tm);
1791 strftime(graph_label,99,im->xlab_user.stst, &tm);
1793 # error "your libc has no strftime I guess we'll abort the exercise here."
1795 gfx_new_text ( im->canvas,
1796 xtr(im,tilab), Y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1797 im->graph_col[GRC_FONT],
1798 im->text_prop[TEXT_PROP_AXIS].font,
1799 im->text_prop[TEXT_PROP_AXIS].size,
1800 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1813 /* draw x and y axis */
1814 gfx_new_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
1815 im->xorigin+im->xsize,im->yorigin-im->ysize,
1816 GRIDWIDTH, im->graph_col[GRC_GRID]);
1818 gfx_new_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
1819 im->xorigin+im->xsize,im->yorigin-im->ysize,
1820 GRIDWIDTH, im->graph_col[GRC_GRID]);
1822 gfx_new_line ( im->canvas, im->xorigin-4,im->yorigin,
1823 im->xorigin+im->xsize+4,im->yorigin,
1824 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1826 gfx_new_line ( im->canvas, im->xorigin,im->yorigin+4,
1827 im->xorigin,im->yorigin-im->ysize-4,
1828 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1831 /* arrow for X axis direction */
1832 gfx_new_area ( im->canvas,
1833 im->xorigin+im->xsize+3, im->yorigin-3,
1834 im->xorigin+im->xsize+3, im->yorigin+4,
1835 im->xorigin+im->xsize+8, im->yorigin+0.5, /* LINEOFFSET */
1836 im->graph_col[GRC_ARROW]);
1843 grid_paint(image_desc_t *im)
1847 double X0,Y0; /* points for filled graph and more*/
1850 /* draw 3d border */
1851 node = gfx_new_area (im->canvas, 0,im->yimg,
1853 2,2,im->graph_col[GRC_SHADEA]);
1854 gfx_add_point( node , im->ximg - 2, 2 );
1855 gfx_add_point( node , im->ximg, 0 );
1856 gfx_add_point( node , 0,0 );
1857 /* gfx_add_point( node , 0,im->yimg ); */
1859 node = gfx_new_area (im->canvas, 2,im->yimg-2,
1860 im->ximg-2,im->yimg-2,
1862 im->graph_col[GRC_SHADEB]);
1863 gfx_add_point( node , im->ximg,0);
1864 gfx_add_point( node , im->ximg,im->yimg);
1865 gfx_add_point( node , 0,im->yimg);
1866 /* gfx_add_point( node , 0,im->yimg ); */
1869 if (im->draw_x_grid == 1 )
1872 if (im->draw_y_grid == 1){
1873 if(im->logarithmic){
1874 res = horizontal_log_grid(im);
1876 res = draw_horizontal_grid(im);
1879 /* dont draw horizontal grid if there is no min and max val */
1881 char *nodata = "No Data found";
1882 gfx_new_text(im->canvas,im->ximg/2, (2*im->yorigin-im->ysize) / 2,
1883 im->graph_col[GRC_FONT],
1884 im->text_prop[TEXT_PROP_AXIS].font,
1885 im->text_prop[TEXT_PROP_AXIS].size,
1886 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1891 /* yaxis description */
1892 /* if (im->canvas->imgformat != IF_PNG) {*/
1894 gfx_new_text( im->canvas,
1895 7, (im->yorigin - im->ysize/2),
1896 im->graph_col[GRC_FONT],
1897 im->text_prop[TEXT_PROP_AXIS].font,
1898 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1899 GFX_H_LEFT, GFX_V_CENTER,
1902 /* horrible hack until we can actually print vertically */
1905 int l=strlen(im->ylegend);
1907 for (n=0;n<strlen(im->ylegend);n++) {
1908 s[0]=im->ylegend[n];
1910 gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(n+1),
1911 im->graph_col[GRC_FONT],
1912 im->text_prop[TEXT_PROP_AXIS].font,
1913 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1914 GFX_H_CENTER, GFX_V_CENTER,
1921 gfx_new_text( im->canvas,
1922 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size,
1923 im->graph_col[GRC_FONT],
1924 im->text_prop[TEXT_PROP_TITLE].font,
1925 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1926 GFX_H_CENTER, GFX_V_CENTER,
1930 if( !(im->extra_flags & NOLEGEND) ) {
1931 for(i=0;i<im->gdes_c;i++){
1932 if(im->gdes[i].legend[0] =='\0')
1935 /* im->gdes[i].leg_y is the bottom of the legend */
1936 X0 = im->gdes[i].leg_x;
1937 Y0 = im->gdes[i].leg_y;
1939 if ( im->gdes[i].gf != GF_GPRINT
1940 && im->gdes[i].gf != GF_COMMENT) {
1943 boxH = gfx_get_text_width(im->canvas, 0,
1944 im->text_prop[TEXT_PROP_AXIS].font,
1945 im->text_prop[TEXT_PROP_AXIS].size,
1946 im->tabwidth,"M", 0) * 1.25;
1949 node = gfx_new_area(im->canvas,
1954 gfx_add_point ( node, X0+boxH, Y0-boxV );
1955 node = gfx_new_line(im->canvas,
1958 gfx_add_point(node,X0+boxH,Y0);
1959 gfx_add_point(node,X0+boxH,Y0-boxV);
1960 gfx_close_path(node);
1961 X0 += boxH / 1.25 * 2;
1963 gfx_new_text ( im->canvas, X0, Y0,
1964 im->graph_col[GRC_FONT],
1965 im->text_prop[TEXT_PROP_AXIS].font,
1966 im->text_prop[TEXT_PROP_AXIS].size,
1967 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1968 im->gdes[i].legend );
1974 /*****************************************************
1975 * lazy check make sure we rely need to create this graph
1976 *****************************************************/
1978 int lazy_check(image_desc_t *im){
1981 struct stat imgstat;
1983 if (im->lazy == 0) return 0; /* no lazy option */
1984 if (stat(im->graphfile,&imgstat) != 0)
1985 return 0; /* can't stat */
1986 /* one pixel in the existing graph is more then what we would
1988 if (time(NULL) - imgstat.st_mtime >
1989 (im->end - im->start) / im->xsize)
1991 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1992 return 0; /* the file does not exist */
1993 switch (im->canvas->imgformat) {
1995 size = PngSize(fd,&(im->ximg),&(im->yimg));
2005 pie_part(image_desc_t *im, gfx_color_t color,
2006 double PieCenterX, double PieCenterY, double Radius,
2007 double startangle, double endangle)
2011 double step=M_PI/50; /* Number of iterations for the circle;
2012 ** 10 is definitely too low, more than
2013 ** 50 seems to be overkill
2016 /* Strange but true: we have to work clockwise or else
2017 ** anti aliasing nor transparency don't work.
2019 ** This test is here to make sure we do it right, also
2020 ** this makes the for...next loop more easy to implement.
2021 ** The return will occur if the user enters a negative number
2022 ** (which shouldn't be done according to the specs) or if the
2023 ** programmers do something wrong (which, as we all know, never
2024 ** happens anyway :)
2026 if (endangle<startangle) return;
2028 /* Hidden feature: Radius decreases each full circle */
2030 while (angle>=2*M_PI) {
2035 node=gfx_new_area(im->canvas,
2036 PieCenterX+sin(startangle)*Radius,
2037 PieCenterY-cos(startangle)*Radius,
2040 PieCenterX+sin(endangle)*Radius,
2041 PieCenterY-cos(endangle)*Radius,
2043 for (angle=endangle;angle-startangle>=step;angle-=step) {
2045 PieCenterX+sin(angle)*Radius,
2046 PieCenterY-cos(angle)*Radius );
2051 graph_size_location(image_desc_t *im, int elements, int piechart )
2053 /* The actual size of the image to draw is determined from
2054 ** several sources. The size given on the command line is
2055 ** the graph area but we need more as we have to draw labels
2056 ** and other things outside the graph area
2059 /* +-+-------------------------------------------+
2060 ** |l|.................title.....................|
2061 ** |e+--+-------------------------------+--------+
2064 ** |l| l| main graph area | chart |
2067 ** |r+--+-------------------------------+--------+
2068 ** |e| | x-axis labels | |
2069 ** |v+--+-------------------------------+--------+
2070 ** | |..............legends......................|
2071 ** +-+-------------------------------------------+
2073 int Xvertical=0, Yvertical=0,
2074 Xtitle =0, Ytitle =0,
2075 Xylabel =0, Yylabel =0,
2078 Xxlabel =0, Yxlabel =0,
2080 Xlegend =0, Ylegend =0,
2082 Xspacing =10, Yspacing =10;
2084 if (im->ylegend[0] != '\0') {
2085 Xvertical = im->text_prop[TEXT_PROP_LEGEND].size *2;
2086 Yvertical = im->text_prop[TEXT_PROP_LEGEND].size * (strlen(im->ylegend)+1);
2089 if (im->title[0] != '\0') {
2090 /* The title is placed "inbetween" two text lines so it
2091 ** automatically has some vertical spacing. The horizontal
2092 ** spacing is added here, on each side.
2094 Xtitle = gfx_get_text_width(im->canvas, 0,
2095 im->text_prop[TEXT_PROP_TITLE].font,
2096 im->text_prop[TEXT_PROP_TITLE].size,
2098 im->title, 0) + 2*Xspacing;
2099 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2;
2105 if (im->draw_x_grid) {
2107 Yxlabel=im->text_prop[TEXT_PROP_LEGEND].size *2;
2109 if (im->draw_y_grid) {
2110 Xylabel=im->text_prop[TEXT_PROP_LEGEND].size *6;
2116 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
2121 /* Now calculate the total size. Insert some spacing where
2122 desired. im->xorigin and im->yorigin need to correspond
2123 with the lower left corner of the main graph area or, if
2124 this one is not set, the imaginary box surrounding the
2127 /* The legend width cannot yet be determined, as a result we
2128 ** have problems adjusting the image to it. For now, we just
2129 ** forget about it at all; the legend will have to fit in the
2130 ** size already allocated.
2132 im->ximg = Xylabel + Xmain + Xpie + Xspacing;
2133 if (Xmain) im->ximg += Xspacing;
2134 if (Xpie) im->ximg += Xspacing;
2135 im->xorigin = Xspacing + Xylabel;
2136 if (Xtitle > im->ximg) im->ximg = Xtitle;
2138 im->ximg += Xvertical;
2139 im->xorigin += Xvertical;
2143 /* The vertical size is interesting... we need to compare
2144 ** the sum of {Ytitle, Ymain, Yxlabel, Ylegend} with Yvertical
2145 ** however we need to know {Ytitle+Ymain+Yxlabel} in order to
2146 ** start even thinking about Ylegend.
2148 ** Do it in three portions: First calculate the inner part,
2149 ** then do the legend, then adjust the total height of the img.
2152 /* reserve space for main and/or pie */
2153 im->yimg = Ymain + Yxlabel;
2154 if (im->yimg < Ypie) im->yimg = Ypie;
2155 im->yorigin = im->yimg - Yxlabel;
2156 /* reserve space for the title *or* some padding above the graph */
2159 im->yorigin += Ytitle;
2161 im->yimg += Yspacing;
2162 im->yorigin += Yspacing;
2164 /* reserve space for padding below the graph */
2165 im->yimg += Yspacing;
2168 /* Determine where to place the legends onto the image.
2169 ** Adjust im->yimg to match the space requirements.
2171 if(leg_place(im)==-1)
2174 /* last of three steps: check total height of image */
2175 if (im->yimg < Yvertical) im->yimg = Yvertical;
2178 if (Xlegend > im->ximg) {
2180 /* reposition Pie */
2184 /* The pie is placed in the upper right hand corner,
2185 ** just below the title (if any) and with sufficient
2189 im->pie_x = im->ximg - Xspacing - Xpie/2;
2190 im->pie_y = im->yorigin-Ymain+Ypie/2;
2192 im->pie_x = im->ximg/2;
2193 im->pie_y = im->yorigin-Ypie/2;
2199 /* draw that picture thing ... */
2201 graph_paint(image_desc_t *im, char ***calcpr)
2204 int lazy = lazy_check(im);
2206 double PieStart=0.0;
2210 double areazero = 0.0;
2211 enum gf_en stack_gf = GF_PRINT;
2212 graph_desc_t *lastgdes = NULL;
2214 /* if we are lazy and there is nothing to PRINT ... quit now */
2215 if (lazy && im->prt_c==0) return 0;
2217 /* pull the data from the rrd files ... */
2219 if(data_fetch(im)==-1)
2222 /* evaluate VDEF and CDEF operations ... */
2223 if(data_calc(im)==-1)
2226 /* check if we need to draw a piechart */
2227 for(i=0;i<im->gdes_c;i++){
2228 if (im->gdes[i].gf == GF_PART) {
2234 /* calculate and PRINT and GPRINT definitions. We have to do it at
2235 * this point because it will affect the length of the legends
2236 * if there are no graph elements we stop here ...
2237 * if we are lazy, try to quit ...
2239 i=print_calc(im,calcpr);
2241 if(((i==0)&&(piechart==0)) || lazy) return 0;
2243 /* If there's only the pie chart to draw, signal this */
2244 if (i==0) piechart=2;
2246 /* get actual drawing data and find min and max values*/
2247 if(data_proc(im)==-1)
2250 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
2252 if(!im->rigid && ! im->logarithmic)
2253 expand_range(im); /* make sure the upper and lower limit are
2256 if (!calc_horizontal_grid(im))
2261 /**************************************************************
2262 *** Calculating sizes and locations became a bit confusing ***
2263 *** so I moved this into a separate function. ***
2264 **************************************************************/
2265 if(graph_size_location(im,i,piechart)==-1)
2268 /* the actual graph is created by going through the individual
2269 graph elements and then drawing them */
2271 node=gfx_new_area ( im->canvas,
2275 im->graph_col[GRC_BACK]);
2277 gfx_add_point(node,0, im->yimg);
2279 if (piechart != 2) {
2280 node=gfx_new_area ( im->canvas,
2281 im->xorigin, im->yorigin,
2282 im->xorigin + im->xsize, im->yorigin,
2283 im->xorigin + im->xsize, im->yorigin-im->ysize,
2284 im->graph_col[GRC_CANVAS]);
2286 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2288 if (im->minval > 0.0)
2289 areazero = im->minval;
2290 if (im->maxval < 0.0)
2291 areazero = im->maxval;
2297 pie_part(im,im->graph_col[GRC_CANVAS],im->pie_x,im->pie_y,im->piesize*0.5,0,2*M_PI);
2300 for(i=0;i<im->gdes_c;i++){
2301 switch(im->gdes[i].gf){
2313 for (ii = 0; ii < im->xsize; ii++)
2315 if (!isnan(im->gdes[i].p_data[ii]) &&
2316 im->gdes[i].p_data[ii] > 0.0)
2318 /* generate a tick */
2319 gfx_new_line(im->canvas, im -> xorigin + ii,
2320 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2324 im -> gdes[i].col );
2330 stack_gf = im->gdes[i].gf;
2332 /* fix data points at oo and -oo */
2333 for(ii=0;ii<im->xsize;ii++){
2334 if (isinf(im->gdes[i].p_data[ii])){
2335 if (im->gdes[i].p_data[ii] > 0) {
2336 im->gdes[i].p_data[ii] = im->maxval ;
2338 im->gdes[i].p_data[ii] = im->minval ;
2344 if (im->gdes[i].col != 0x0){
2345 /* GF_LINE and friend */
2346 if(stack_gf == GF_LINE ){
2348 for(ii=1;ii<im->xsize;ii++){
2349 if ( ! isnan(im->gdes[i].p_data[ii-1])
2350 && ! isnan(im->gdes[i].p_data[ii])){
2352 node = gfx_new_line(im->canvas,
2353 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2354 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2355 im->gdes[i].linewidth,
2358 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2367 for(ii=1;ii<im->xsize;ii++){
2369 if ( ! isnan(im->gdes[i].p_data[ii-1])
2370 && ! isnan(im->gdes[i].p_data[ii])){
2374 if (im->gdes[i].gf == GF_STACK) {
2376 if ( (im->gdes[i].gf == GF_STACK)
2377 || (im->gdes[i].stack) ) {
2379 ybase = ytr(im,lastgdes->p_data[ii-1]);
2381 ybase = ytr(im,areazero);
2384 node = gfx_new_area(im->canvas,
2385 ii-1+im->xorigin,ybase,
2386 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2387 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2391 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2395 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2396 /* GF_AREA STACK type*/
2398 if (im->gdes[i].gf == GF_STACK ) {
2400 if ( (im->gdes[i].gf == GF_STACK)
2401 || (im->gdes[i].stack) ) {
2403 for (iii=ii-1;iii>area_start;iii--){
2404 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2407 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2412 } /* else GF_LINE */
2413 } /* if color != 0x0 */
2414 /* make sure we do not run into trouble when stacking on NaN */
2415 for(ii=0;ii<im->xsize;ii++){
2416 if (isnan(im->gdes[i].p_data[ii])) {
2417 if (lastgdes && (im->gdes[i].gf == GF_STACK)) {
2418 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
2420 im->gdes[i].p_data[ii] = ytr(im,areazero);
2424 lastgdes = &(im->gdes[i]);
2427 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2428 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2430 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2431 pie_part(im,im->gdes[i].col,
2432 im->pie_x,im->pie_y,im->piesize*0.4,
2433 M_PI*2.0*PieStart/100.0,
2434 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2435 PieStart += im->gdes[i].yrule;
2444 /* grid_paint also does the text */
2447 /* the RULES are the last thing to paint ... */
2448 for(i=0;i<im->gdes_c;i++){
2450 switch(im->gdes[i].gf){
2452 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2453 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2455 if(im->gdes[i].yrule >= im->minval
2456 && im->gdes[i].yrule <= im->maxval)
2457 gfx_new_line(im->canvas,
2458 im->xorigin,ytr(im,im->gdes[i].yrule),
2459 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2460 1.0,im->gdes[i].col);
2463 if(im->gdes[i].xrule == 0) { /* fetch variable */
2464 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2466 if(im->gdes[i].xrule >= im->start
2467 && im->gdes[i].xrule <= im->end)
2468 gfx_new_line(im->canvas,
2469 xtr(im,im->gdes[i].xrule),im->yorigin,
2470 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2471 1.0,im->gdes[i].col);
2479 if (strcmp(im->graphfile,"-")==0) {
2481 /* Change translation mode for stdout to BINARY */
2482 _setmode( _fileno( stdout ), O_BINARY );
2486 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2487 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2488 rrd_strerror(errno));
2492 gfx_render (im->canvas,im->ximg,im->yimg,0x0,fo);
2493 if (strcmp(im->graphfile,"-") != 0)
2499 /*****************************************************
2501 *****************************************************/
2504 gdes_alloc(image_desc_t *im){
2506 unsigned long def_step = (im->end-im->start)/im->xsize;
2508 if (im->step > def_step) /* step can be increassed ... no decreassed */
2509 def_step = im->step;
2513 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2514 * sizeof(graph_desc_t)))==NULL){
2515 rrd_set_error("realloc graph_descs");
2520 im->gdes[im->gdes_c-1].step=def_step;
2521 im->gdes[im->gdes_c-1].stack=0;
2522 im->gdes[im->gdes_c-1].debug=0;
2523 im->gdes[im->gdes_c-1].start=im->start;
2524 im->gdes[im->gdes_c-1].end=im->end;
2525 im->gdes[im->gdes_c-1].vname[0]='\0';
2526 im->gdes[im->gdes_c-1].data=NULL;
2527 im->gdes[im->gdes_c-1].ds_namv=NULL;
2528 im->gdes[im->gdes_c-1].data_first=0;
2529 im->gdes[im->gdes_c-1].p_data=NULL;
2530 im->gdes[im->gdes_c-1].rpnp=NULL;
2531 im->gdes[im->gdes_c-1].col = 0x0;
2532 im->gdes[im->gdes_c-1].legend[0]='\0';
2533 im->gdes[im->gdes_c-1].rrd[0]='\0';
2534 im->gdes[im->gdes_c-1].ds=-1;
2535 im->gdes[im->gdes_c-1].p_data=NULL;
2536 im->gdes[im->gdes_c-1].yrule=DNAN;
2537 im->gdes[im->gdes_c-1].xrule=0;
2541 /* copies input untill the first unescaped colon is found
2542 or until input ends. backslashes have to be escaped as well */
2544 scan_for_col(char *input, int len, char *output)
2549 input[inp] != ':' &&
2552 if (input[inp] == '\\' &&
2553 input[inp+1] != '\0' &&
2554 (input[inp+1] == '\\' ||
2555 input[inp+1] == ':')){
2556 output[outp++] = input[++inp];
2559 output[outp++] = input[inp];
2562 output[outp] = '\0';
2565 /* Some surgery done on this function, it became ridiculously big.
2567 ** - initializing now in rrd_graph_init()
2568 ** - options parsing now in rrd_graph_options()
2569 ** - script parsing now in rrd_graph_script()
2572 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2576 rrd_graph_init(&im);
2578 rrd_graph_options(argc,argv,&im);
2579 if (rrd_test_error()) {
2584 if (strlen(argv[optind])>=MAXPATH) {
2585 rrd_set_error("filename (including path) too long");
2589 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2590 im.graphfile[MAXPATH-1]='\0';
2592 rrd_graph_script(argc,argv,&im);
2593 if (rrd_test_error()) {
2598 /* Everything is now read and the actual work can start */
2601 if (graph_paint(&im,prdata)==-1){
2606 /* The image is generated and needs to be output.
2607 ** Also, if needed, print a line with information about the image.
2615 /* maybe prdata is not allocated yet ... lets do it now */
2616 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2617 rrd_set_error("malloc imginfo");
2621 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2623 rrd_set_error("malloc imginfo");
2626 filename=im.graphfile+strlen(im.graphfile);
2627 while(filename > im.graphfile) {
2628 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2632 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.canvas->zoom*im.ximg),(long)(im.canvas->zoom*im.yimg));
2639 rrd_graph_init(image_desc_t *im)
2646 #ifdef HAVE_SETLOCALE
2647 setlocale(LC_TIME,"");
2650 im->xlab_user.minsec = -1;
2656 im->ylegend[0] = '\0';
2657 im->title[0] = '\0';
2660 im->unitsexponent= 9999;
2666 im->logarithmic = 0;
2667 im->ygridstep = DNAN;
2668 im->draw_x_grid = 1;
2669 im->draw_y_grid = 1;
2674 im->canvas = gfx_new_canvas();
2675 im->grid_dash_on = 1;
2676 im->grid_dash_off = 1;
2678 for(i=0;i<DIM(graph_col);i++)
2679 im->graph_col[i]=graph_col[i];
2683 windir = getenv("windir");
2684 /* %windir% is something like D:\windows or C:\winnt */
2685 if (windir != NULL) {
2686 strcpy(rrd_win_default_font,windir);
2687 strcat(rrd_win_default_font,"\\fonts\\cour.ttf");
2688 for(i=0;i<DIM(text_prop);i++)
2689 text_prop[i].font = rrd_win_default_font;
2693 for(i=0;i<DIM(text_prop);i++){
2694 im->text_prop[i].size = text_prop[i].size;
2695 im->text_prop[i].font = text_prop[i].font;
2700 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2703 char *parsetime_error = NULL;
2704 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2705 time_t start_tmp=0,end_tmp=0;
2707 struct time_value start_tv, end_tv;
2710 parsetime("end-24h", &start_tv);
2711 parsetime("now", &end_tv);
2714 static struct option long_options[] =
2716 {"start", required_argument, 0, 's'},
2717 {"end", required_argument, 0, 'e'},
2718 {"x-grid", required_argument, 0, 'x'},
2719 {"y-grid", required_argument, 0, 'y'},
2720 {"vertical-label",required_argument,0,'v'},
2721 {"width", required_argument, 0, 'w'},
2722 {"height", required_argument, 0, 'h'},
2723 {"interlaced", no_argument, 0, 'i'},
2724 {"upper-limit",required_argument, 0, 'u'},
2725 {"lower-limit",required_argument, 0, 'l'},
2726 {"rigid", no_argument, 0, 'r'},
2727 {"base", required_argument, 0, 'b'},
2728 {"logarithmic",no_argument, 0, 'o'},
2729 {"color", required_argument, 0, 'c'},
2730 {"font", required_argument, 0, 'n'},
2731 {"title", required_argument, 0, 't'},
2732 {"imginfo", required_argument, 0, 'f'},
2733 {"imgformat", required_argument, 0, 'a'},
2734 {"lazy", no_argument, 0, 'z'},
2735 {"zoom", required_argument, 0, 'm'},
2736 {"no-legend", no_argument, 0, 'g'},
2737 {"alt-y-grid", no_argument, 0, 'Y'},
2738 {"no-minor", no_argument, 0, 'I'},
2739 {"alt-autoscale", no_argument, 0, 'A'},
2740 {"alt-autoscale-max", no_argument, 0, 'M'},
2741 {"units-exponent",required_argument, 0, 'X'},
2742 {"step", required_argument, 0, 'S'},
2743 {"no-gridfit", no_argument, 0, 'N'},
2745 int option_index = 0;
2749 opt = getopt_long(argc, argv,
2750 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:I:zgYAMX:S:N",
2751 long_options, &option_index);
2758 im->extra_flags |= NOMINOR;
2761 im->extra_flags |= ALTYGRID;
2764 im->extra_flags |= ALTAUTOSCALE;
2767 im->extra_flags |= ALTAUTOSCALE_MAX;
2770 im->extra_flags |= NOLEGEND;
2773 im->unitsexponent = atoi(optarg);
2776 im->step = atoi(optarg);
2782 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2783 rrd_set_error( "start time: %s", parsetime_error );
2788 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2789 rrd_set_error( "end time: %s", parsetime_error );
2794 if(strcmp(optarg,"none") == 0){
2800 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2802 &im->xlab_user.gridst,
2804 &im->xlab_user.mgridst,
2806 &im->xlab_user.labst,
2807 &im->xlab_user.precis,
2808 &stroff) == 7 && stroff != 0){
2809 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2810 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2811 rrd_set_error("unknown keyword %s",scan_gtm);
2813 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2814 rrd_set_error("unknown keyword %s",scan_mtm);
2816 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2817 rrd_set_error("unknown keyword %s",scan_ltm);
2820 im->xlab_user.minsec = 1;
2821 im->xlab_user.stst = im->xlab_form;
2823 rrd_set_error("invalid x-grid format");
2829 if(strcmp(optarg,"none") == 0){
2837 &im->ylabfact) == 2) {
2838 if(im->ygridstep<=0){
2839 rrd_set_error("grid step must be > 0");
2841 } else if (im->ylabfact < 1){
2842 rrd_set_error("label factor must be > 0");
2846 rrd_set_error("invalid y-grid format");
2851 strncpy(im->ylegend,optarg,150);
2852 im->ylegend[150]='\0';
2855 im->maxval = atof(optarg);
2858 im->minval = atof(optarg);
2861 im->base = atol(optarg);
2862 if(im->base != 1024 && im->base != 1000 ){
2863 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2868 long_tmp = atol(optarg);
2869 if (long_tmp < 10) {
2870 rrd_set_error("width below 10 pixels");
2873 im->xsize = long_tmp;
2876 long_tmp = atol(optarg);
2877 if (long_tmp < 10) {
2878 rrd_set_error("height below 10 pixels");
2881 im->ysize = long_tmp;
2884 im->canvas->interlaced = 1;
2890 im->imginfo = optarg;
2893 if((im->canvas->imgformat = if_conv(optarg)) == -1) {
2894 rrd_set_error("unsupported graphics format '%s'",optarg);
2902 im->logarithmic = 1;
2903 if (isnan(im->minval))
2909 col_nam,&color) == 2){
2911 if((ci=grc_conv(col_nam)) != -1){
2912 im->graph_col[ci]=color;
2914 rrd_set_error("invalid color name '%s'",col_nam);
2917 rrd_set_error("invalid color def format");
2922 /* originally this used char *prop = "" and
2923 ** char *font = "dummy" however this results
2924 ** in a SEG fault, at least on RH7.1
2926 ** The current implementation isn't proper
2927 ** either, font is never freed and prop uses
2928 ** a fixed width string
2937 prop,&size,font) == 3){
2939 if((sindex=text_prop_conv(prop)) != -1){
2940 im->text_prop[sindex].size=size;
2941 im->text_prop[sindex].font=font;
2942 if (sindex==0) { /* the default */
2943 im->text_prop[TEXT_PROP_TITLE].size=size;
2944 im->text_prop[TEXT_PROP_TITLE].font=font;
2945 im->text_prop[TEXT_PROP_AXIS].size=size;
2946 im->text_prop[TEXT_PROP_AXIS].font=font;
2947 im->text_prop[TEXT_PROP_UNIT].size=size;
2948 im->text_prop[TEXT_PROP_UNIT].font=font;
2949 im->text_prop[TEXT_PROP_LEGEND].size=size;
2950 im->text_prop[TEXT_PROP_LEGEND].font=font;
2953 rrd_set_error("invalid fonttag '%s'",prop);
2957 rrd_set_error("invalid text property format");
2963 im->canvas->zoom = atof(optarg);
2964 if (im->canvas->zoom <= 0.0) {
2965 rrd_set_error("zoom factor must be > 0");
2970 strncpy(im->title,optarg,150);
2971 im->title[150]='\0';
2976 rrd_set_error("unknown option '%c'", optopt);
2978 rrd_set_error("unknown option '%s'",argv[optind-1]);
2983 if (optind >= argc) {
2984 rrd_set_error("missing filename");
2988 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2989 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2993 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2994 /* error string is set in parsetime.c */
2998 if (start_tmp < 3600*24*365*10){
2999 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
3003 if (end_tmp < start_tmp) {
3004 rrd_set_error("start (%ld) should be less than end (%ld)",
3005 start_tmp, end_tmp);
3009 im->start = start_tmp;
3014 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
3016 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
3017 rrd_set_error("Unknown variable '%s' in %s",varname,err);
3023 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
3026 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
3028 color=strstr(var,"#");
3031 rrd_set_error("Found no color in %s",err);
3040 rest=strstr(color,":");
3048 sscanf(color,"#%6lx%n",&col,&n);
3049 col = (col << 8) + 0xff /* shift left by 8 */;
3050 if (n!=7) rrd_set_error("Color problem in %s",err);
3053 sscanf(color,"#%8lx%n",&col,&n);
3056 rrd_set_error("Color problem in %s",err);
3058 if (rrd_test_error()) return 0;
3064 rrd_graph_legend(graph_desc_t *gdp, char *line)
3068 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3070 return (strlen(&line[i])==0);
3074 int bad_format(char *fmt) {
3078 while (*ptr != '\0')
3079 if (*ptr++ == '%') {
3081 /* line cannot end with percent char */
3082 if (*ptr == '\0') return 1;
3084 /* '%s', '%S' and '%%' are allowed */
3085 if (*ptr == 's' || *ptr == 'S' || *ptr == '%') ptr++;
3087 /* or else '% 6.2lf' and such are allowed */
3090 /* optional padding character */
3091 if (*ptr == ' ' || *ptr == '+' || *ptr == '-') ptr++;
3093 /* This should take care of 'm.n' with all three optional */
3094 while (*ptr >= '0' && *ptr <= '9') ptr++;
3095 if (*ptr == '.') ptr++;
3096 while (*ptr >= '0' && *ptr <= '9') ptr++;
3098 /* Either 'le', 'lf' or 'lg' must follow here */
3099 if (*ptr++ != 'l') return 1;
3100 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g') ptr++;
3111 vdef_parse(gdes,str)
3112 struct graph_desc_t *gdes;
3115 /* A VDEF currently is either "func" or "param,func"
3116 * so the parsing is rather simple. Change if needed.
3123 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3124 if (n==strlen(str)) { /* matched */
3128 sscanf(str,"%29[A-Z]%n",func,&n);
3129 if (n==strlen(str)) { /* matched */
3132 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3139 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3140 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3141 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3142 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3143 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3144 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3145 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3147 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3154 switch (gdes->vf.op) {
3156 if (isnan(param)) { /* no parameter given */
3157 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3163 if (param>=0.0 && param<=100.0) {
3164 gdes->vf.param = param;
3165 gdes->vf.val = DNAN; /* undefined */
3166 gdes->vf.when = 0; /* undefined */
3168 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3182 gdes->vf.param = DNAN;
3183 gdes->vf.val = DNAN;
3186 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3203 graph_desc_t *src,*dst;
3207 dst = &im->gdes[gdi];
3208 src = &im->gdes[dst->vidx];
3209 data = src->data + src->ds;
3210 steps = (src->end - src->start) / src->step;
3213 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3220 switch (dst->vf.op) {
3221 case VDEF_PERCENT: {
3222 rrd_value_t * array;
3226 if ((array = malloc(steps*sizeof(double)))==NULL) {
3227 rrd_set_error("malloc VDEV_PERCENT");
3230 for (step=0;step < steps; step++) {
3231 array[step]=data[step*src->ds_cnt];
3233 qsort(array,step,sizeof(double),vdef_percent_compar);
3235 field = (steps-1)*dst->vf.param/100;
3236 dst->vf.val = array[field];
3237 dst->vf.when = 0; /* no time component */
3240 for(step=0;step<steps;step++)
3241 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3247 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3248 if (step == steps) {
3252 dst->vf.val = data[step*src->ds_cnt];
3253 dst->vf.when = src->start + (step+1)*src->step;
3255 while (step != steps) {
3256 if (finite(data[step*src->ds_cnt])) {
3257 if (data[step*src->ds_cnt] > dst->vf.val) {
3258 dst->vf.val = data[step*src->ds_cnt];
3259 dst->vf.when = src->start + (step+1)*src->step;
3266 case VDEF_AVERAGE: {
3269 for (step=0;step<steps;step++) {
3270 if (finite(data[step*src->ds_cnt])) {
3271 sum += data[step*src->ds_cnt];
3276 if (dst->vf.op == VDEF_TOTAL) {
3277 dst->vf.val = sum*src->step;
3278 dst->vf.when = cnt*src->step; /* not really "when" */
3280 dst->vf.val = sum/cnt;
3281 dst->vf.when = 0; /* no time component */
3291 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3292 if (step == steps) {
3296 dst->vf.val = data[step*src->ds_cnt];
3297 dst->vf.when = src->start + (step+1)*src->step;
3299 while (step != steps) {
3300 if (finite(data[step*src->ds_cnt])) {
3301 if (data[step*src->ds_cnt] < dst->vf.val) {
3302 dst->vf.val = data[step*src->ds_cnt];
3303 dst->vf.when = src->start + (step+1)*src->step;
3310 /* The time value returned here is one step before the
3311 * actual time value. This is the start of the first
3315 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3316 if (step == steps) { /* all entries were NaN */
3320 dst->vf.val = data[step*src->ds_cnt];
3321 dst->vf.when = src->start + step*src->step;
3325 /* The time value returned here is the
3326 * actual time value. This is the end of the last
3330 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3331 if (step < 0) { /* all entries were NaN */
3335 dst->vf.val = data[step*src->ds_cnt];
3336 dst->vf.when = src->start + (step+1)*src->step;
3343 /* NaN < -INF < finite_values < INF */
3345 vdef_percent_compar(a,b)
3348 /* Equality is not returned; this doesn't hurt except
3349 * (maybe) for a little performance.
3352 /* First catch NaN values. They are smallest */
3353 if (isnan( *(double *)a )) return -1;
3354 if (isnan( *(double *)b )) return 1;
3356 /* NaN doesn't reach this part so INF and -INF are extremes.
3357 * The sign from isinf() is compatible with the sign we return
3359 if (isinf( *(double *)a )) return isinf( *(double *)a );
3360 if (isinf( *(double *)b )) return isinf( *(double *)b );
3362 /* If we reach this, both values must be finite */
3363 if ( *(double *)a < *(double *)b ) return -1; else return 1;