1 /****************************************************************************
2 * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
3 ****************************************************************************
4 * rrd__graph.c make creates ne rrds
5 ****************************************************************************/
17 #include "rrd_graph.h"
18 #include "rrd_graph_helper.h"
20 /* some constant definitions */
23 #ifndef RRD_DEFAULT_FONT
25 #define RRD_DEFAULT_FONT "c:/winnt/fonts/COUR.TTF"
27 #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf"
28 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
33 text_prop_t text_prop[] = {
34 { 10.0, RRD_DEFAULT_FONT }, /* default */
35 { 12.0, RRD_DEFAULT_FONT }, /* title */
36 { 8.0, RRD_DEFAULT_FONT }, /* axis */
37 { 10.0, RRD_DEFAULT_FONT }, /* unit */
38 { 10.0, RRD_DEFAULT_FONT } /* legend */
42 {0, TMT_SECOND,30, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
43 {2, TMT_MINUTE,1, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
44 {5, TMT_MINUTE,2, TMT_MINUTE,10, TMT_MINUTE,10, 0,"%H:%M"},
45 {10, TMT_MINUTE,5, TMT_MINUTE,20, TMT_MINUTE,20, 0,"%H:%M"},
46 {30, TMT_MINUTE,10, TMT_HOUR,1, TMT_HOUR,1, 0,"%H:%M"},
47 {60, TMT_MINUTE,30, TMT_HOUR,2, TMT_HOUR,2, 0,"%H:%M"},
48 {180, TMT_HOUR,1, TMT_HOUR,6, TMT_HOUR,6, 0,"%H:%M"},
49 /*{300, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly*/
50 {600, TMT_HOUR,6, TMT_DAY,1, TMT_DAY,1, 24*3600,"%a"},
51 {1800, TMT_HOUR,12, TMT_DAY,1, TMT_DAY,2, 24*3600,"%a"},
52 {3600, TMT_DAY,1, TMT_WEEK,1, TMT_WEEK,1, 7*24*3600,"Week %V"},
53 {3*3600, TMT_WEEK,1, TMT_MONTH,1, TMT_WEEK,2, 7*24*3600,"Week %V"},
54 {6*3600, TMT_MONTH,1, TMT_MONTH,1, TMT_MONTH,1, 30*24*3600,"%b"},
55 {48*3600, TMT_MONTH,1, TMT_MONTH,3, TMT_MONTH,3, 30*24*3600,"%b"},
56 {10*24*3600, TMT_YEAR,1, TMT_YEAR,1, TMT_YEAR,1, 365*24*3600,"%y"},
57 {-1,TMT_MONTH,0,TMT_MONTH,0,TMT_MONTH,0,0,""}
60 /* sensible logarithmic y label intervals ...
61 the first element of each row defines the possible starting points on the
62 y axis ... the other specify the */
64 double yloglab[][12]= {{ 1e9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
65 { 1e3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
66 { 1e1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
67 /* { 1e1, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, */
68 { 1e1, 1, 2.5, 5, 7.5, 0, 0, 0, 0, 0, 0, 0 },
69 { 1e1, 1, 2, 4, 6, 8, 0, 0, 0, 0, 0, 0 },
70 { 1e1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 },
71 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }};
73 /* sensible y label intervals ...*/
91 gfx_color_t graph_col[] = /* default colors */
92 { 0xFFFFFFFF, /* canvas */
93 0xF0F0F0FF, /* background */
94 0xD0D0D0FF, /* shade A */
95 0xA0A0A0FF, /* shade B */
96 0x909090FF, /* grid */
97 0xE05050FF, /* major grid */
98 0x000000FF, /* font */
99 0x000000FF, /* frame */
100 0xFF0000FF /* arrow */
107 # define DPRINT(x) (void)(printf x, printf("\n"))
113 /* initialize with xtr(im,0); */
115 xtr(image_desc_t *im,time_t mytime){
118 pixie = (double) im->xsize / (double)(im->end - im->start);
121 return (int)((double)im->xorigin
122 + pixie * ( mytime - im->start ) );
125 /* translate data values into y coordinates */
127 ytr(image_desc_t *im, double value){
132 pixie = (double) im->ysize / (im->maxval - im->minval);
134 pixie = (double) im->ysize / (log10(im->maxval) - log10(im->minval));
136 } else if(!im->logarithmic) {
137 yval = im->yorigin - pixie * (value - im->minval) + 0.5;
139 if (value < im->minval) {
142 yval = im->yorigin - pixie * (log10(value) - log10(im->minval)) + 0.5;
145 /* make sure we don't return anything too unreasonable. GD lib can
146 get terribly slow when drawing lines outside its scope. This is
147 especially problematic in connection with the rigid option */
150 } else if ((int)yval > im->yorigin) {
151 return im->yorigin+2;
152 } else if ((int) yval < im->yorigin - im->ysize){
153 return im->yorigin - im->ysize - 2;
161 /* conversion function for symbolic entry names */
164 #define conv_if(VV,VVV) \
165 if (strcmp(#VV, string) == 0) return VVV ;
167 enum gf_en gf_conv(char *string){
169 conv_if(PRINT,GF_PRINT)
170 conv_if(GPRINT,GF_GPRINT)
171 conv_if(COMMENT,GF_COMMENT)
172 conv_if(HRULE,GF_HRULE)
173 conv_if(VRULE,GF_VRULE)
174 conv_if(LINE,GF_LINE)
175 conv_if(AREA,GF_AREA)
176 conv_if(STACK,GF_STACK)
177 conv_if(TICK,GF_TICK)
179 conv_if(CDEF,GF_CDEF)
180 conv_if(VDEF,GF_VDEF)
181 conv_if(PART,GF_PART)
186 enum gfx_if_en if_conv(char *string){
195 enum tmt_en tmt_conv(char *string){
197 conv_if(SECOND,TMT_SECOND)
198 conv_if(MINUTE,TMT_MINUTE)
199 conv_if(HOUR,TMT_HOUR)
201 conv_if(WEEK,TMT_WEEK)
202 conv_if(MONTH,TMT_MONTH)
203 conv_if(YEAR,TMT_YEAR)
207 enum grc_en grc_conv(char *string){
209 conv_if(BACK,GRC_BACK)
210 conv_if(CANVAS,GRC_CANVAS)
211 conv_if(SHADEA,GRC_SHADEA)
212 conv_if(SHADEB,GRC_SHADEB)
213 conv_if(GRID,GRC_GRID)
214 conv_if(MGRID,GRC_MGRID)
215 conv_if(FONT,GRC_FONT)
216 conv_if(FRAME,GRC_FRAME)
217 conv_if(ARROW,GRC_ARROW)
222 enum text_prop_en text_prop_conv(char *string){
224 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
225 conv_if(TITLE,TEXT_PROP_TITLE)
226 conv_if(AXIS,TEXT_PROP_AXIS)
227 conv_if(UNIT,TEXT_PROP_UNIT)
228 conv_if(LEGEND,TEXT_PROP_LEGEND)
238 im_free(image_desc_t *im)
241 if (im == NULL) return 0;
242 for(i=0;i<im->gdes_c;i++){
243 if (im->gdes[i].data_first){
244 /* careful here, because a single pointer can occur several times */
245 free (im->gdes[i].data);
246 if (im->gdes[i].ds_namv){
247 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
248 free(im->gdes[i].ds_namv[ii]);
249 free(im->gdes[i].ds_namv);
252 free (im->gdes[i].p_data);
253 free (im->gdes[i].rpnp);
256 gfx_destroy(im->canvas);
260 /* find SI magnitude symbol for the given number*/
263 image_desc_t *im, /* image description */
270 char *symbol[] = {"a", /* 10e-18 Atto */
271 "f", /* 10e-15 Femto */
272 "p", /* 10e-12 Pico */
273 "n", /* 10e-9 Nano */
274 "u", /* 10e-6 Micro */
275 "m", /* 10e-3 Milli */
280 "T", /* 10e12 Tera */
281 "P", /* 10e15 Peta */
287 if (*value == 0.0 || isnan(*value) ) {
291 sindex = floor(log(fabs(*value))/log((double)im->base));
292 *magfact = pow((double)im->base, (double)sindex);
293 (*value) /= (*magfact);
295 if ( sindex <= symbcenter && sindex >= -symbcenter) {
296 (*symb_ptr) = symbol[sindex+symbcenter];
304 /* find SI magnitude symbol for the numbers on the y-axis*/
307 image_desc_t *im /* image description */
311 char symbol[] = {'a', /* 10e-18 Atto */
312 'f', /* 10e-15 Femto */
313 'p', /* 10e-12 Pico */
314 'n', /* 10e-9 Nano */
315 'u', /* 10e-6 Micro */
316 'm', /* 10e-3 Milli */
321 'T', /* 10e12 Tera */
322 'P', /* 10e15 Peta */
328 if (im->unitsexponent != 9999) {
329 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
330 digits = floor(im->unitsexponent / 3);
332 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
334 im->magfact = pow((double)im->base , digits);
337 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
340 if ( ((digits+symbcenter) < sizeof(symbol)) &&
341 ((digits+symbcenter) >= 0) )
342 im->symbol = symbol[(int)digits+symbcenter];
347 /* move min and max values around to become sensible */
350 expand_range(image_desc_t *im)
352 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
353 600.0,500.0,400.0,300.0,250.0,
354 200.0,125.0,100.0,90.0,80.0,
355 75.0,70.0,60.0,50.0,40.0,30.0,
356 25.0,20.0,10.0,9.0,8.0,
357 7.0,6.0,5.0,4.0,3.5,3.0,
358 2.5,2.0,1.8,1.5,1.2,1.0,
359 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
361 double scaled_min,scaled_max;
368 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
369 im->minval,im->maxval,im->magfact);
372 if (isnan(im->ygridstep)){
373 if(im->extra_flags & ALTAUTOSCALE) {
374 /* measure the amplitude of the function. Make sure that
375 graph boundaries are slightly higher then max/min vals
376 so we can see amplitude on the graph */
379 delt = im->maxval - im->minval;
381 fact = 2.0 * pow(10.0,
382 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
384 adj = (fact - delt) * 0.55;
386 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
392 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
393 /* measure the amplitude of the function. Make sure that
394 graph boundaries are slightly higher than max vals
395 so we can see amplitude on the graph */
396 adj = (im->maxval - im->minval) * 0.1;
400 scaled_min = im->minval / im->magfact;
401 scaled_max = im->maxval / im->magfact;
403 for (i=1; sensiblevalues[i] > 0; i++){
404 if (sensiblevalues[i-1]>=scaled_min &&
405 sensiblevalues[i]<=scaled_min)
406 im->minval = sensiblevalues[i]*(im->magfact);
408 if (-sensiblevalues[i-1]<=scaled_min &&
409 -sensiblevalues[i]>=scaled_min)
410 im->minval = -sensiblevalues[i-1]*(im->magfact);
412 if (sensiblevalues[i-1] >= scaled_max &&
413 sensiblevalues[i] <= scaled_max)
414 im->maxval = sensiblevalues[i-1]*(im->magfact);
416 if (-sensiblevalues[i-1]<=scaled_max &&
417 -sensiblevalues[i] >=scaled_max)
418 im->maxval = -sensiblevalues[i]*(im->magfact);
422 /* adjust min and max to the grid definition if there is one */
423 im->minval = (double)im->ylabfact * im->ygridstep *
424 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
425 im->maxval = (double)im->ylabfact * im->ygridstep *
426 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
430 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
431 im->minval,im->maxval,im->magfact);
436 /* reduce data reimplementation by Alex */
440 enum cf_en cf, /* which consolidation function ?*/
441 unsigned long cur_step, /* step the data currently is in */
442 time_t *start, /* start, end and step as requested ... */
443 time_t *end, /* ... by the application will be ... */
444 unsigned long *step, /* ... adjusted to represent reality */
445 unsigned long *ds_cnt, /* number of data sources in file */
446 rrd_value_t **data) /* two dimensional array containing the data */
448 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
449 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
450 rrd_value_t *srcptr,*dstptr;
452 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
455 row_cnt = ((*end)-(*start))/cur_step;
461 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
462 row_cnt,reduce_factor,*start,*end,cur_step);
463 for (col=0;col<row_cnt;col++) {
464 printf("time %10lu: ",*start+(col+1)*cur_step);
465 for (i=0;i<*ds_cnt;i++)
466 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
471 /* We have to combine [reduce_factor] rows of the source
472 ** into one row for the destination. Doing this we also
473 ** need to take care to combine the correct rows. First
474 ** alter the start and end time so that they are multiples
475 ** of the new step time. We cannot reduce the amount of
476 ** time so we have to move the end towards the future and
477 ** the start towards the past.
479 end_offset = (*end) % (*step);
480 start_offset = (*start) % (*step);
482 /* If there is a start offset (which cannot be more than
483 ** one destination row), skip the appropriate number of
484 ** source rows and one destination row. The appropriate
485 ** number is what we do know (start_offset/cur_step) of
486 ** the new interval (*step/cur_step aka reduce_factor).
489 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
490 printf("row_cnt before: %lu\n",row_cnt);
493 (*start) = (*start)-start_offset;
494 skiprows=reduce_factor-start_offset/cur_step;
495 srcptr+=skiprows* *ds_cnt;
496 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
500 printf("row_cnt between: %lu\n",row_cnt);
503 /* At the end we have some rows that are not going to be
504 ** used, the amount is end_offset/cur_step
507 (*end) = (*end)-end_offset+(*step);
508 skiprows = end_offset/cur_step;
512 printf("row_cnt after: %lu\n",row_cnt);
515 /* Sanity check: row_cnt should be multiple of reduce_factor */
516 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
518 if (row_cnt%reduce_factor) {
519 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
520 row_cnt,reduce_factor);
521 printf("BUG in reduce_data()\n");
525 /* Now combine reduce_factor intervals at a time
526 ** into one interval for the destination.
529 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
530 for (col=0;col<(*ds_cnt);col++) {
531 rrd_value_t newval=DNAN;
532 unsigned long validval=0;
534 for (i=0;i<reduce_factor;i++) {
535 if (isnan(srcptr[i*(*ds_cnt)+col])) {
539 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
547 newval += srcptr[i*(*ds_cnt)+col];
550 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
553 /* an interval contains a failure if any subintervals contained a failure */
555 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
558 newval = srcptr[i*(*ds_cnt)+col];
563 if (validval == 0){newval = DNAN;} else{
581 srcptr+=(*ds_cnt)*reduce_factor;
582 row_cnt-=reduce_factor;
584 /* If we had to alter the endtime, we didn't have enough
585 ** source rows to fill the last row. Fill it with NaN.
587 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
589 row_cnt = ((*end)-(*start))/ *step;
591 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
592 row_cnt,*start,*end,*step);
593 for (col=0;col<row_cnt;col++) {
594 printf("time %10lu: ",*start+(col+1)*(*step));
595 for (i=0;i<*ds_cnt;i++)
596 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
603 /* get the data required for the graphs from the
607 data_fetch( image_desc_t *im )
611 /* pull the data from the log files ... */
612 for (i=0;i<im->gdes_c;i++){
613 /* only GF_DEF elements fetch data */
614 if (im->gdes[i].gf != GF_DEF)
618 /* do we have it already ?*/
619 for (ii=0;ii<i;ii++){
620 if (im->gdes[ii].gf != GF_DEF)
622 if((strcmp(im->gdes[i].rrd,im->gdes[ii].rrd) == 0)
623 && (im->gdes[i].cf == im->gdes[ii].cf)){
624 /* OK the data it is here already ...
625 * we just copy the header portion */
626 im->gdes[i].start = im->gdes[ii].start;
627 im->gdes[i].end = im->gdes[ii].end;
628 im->gdes[i].step = im->gdes[ii].step;
629 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
630 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
631 im->gdes[i].data = im->gdes[ii].data;
632 im->gdes[i].data_first = 0;
639 unsigned long ft_step = im->gdes[i].step ;
641 if((rrd_fetch_fn(im->gdes[i].rrd,
647 &im->gdes[i].ds_namv,
648 &im->gdes[i].data)) == -1){
651 im->gdes[i].data_first = 1;
653 if (ft_step < im->gdes[i].step) {
654 reduce_data(im->gdes[i].cf,
662 im->gdes[i].step = ft_step;
666 /* lets see if the required data source is realy there */
667 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
668 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
671 if (im->gdes[i].ds== -1){
672 rrd_set_error("No DS called '%s' in '%s'",
673 im->gdes[i].ds_nam,im->gdes[i].rrd);
681 /* evaluate the expressions in the CDEF functions */
683 /*************************************************************
685 *************************************************************/
688 find_var_wrapper(void *arg1, char *key)
690 return find_var((image_desc_t *) arg1, key);
693 /* find gdes containing var*/
695 find_var(image_desc_t *im, char *key){
697 for(ii=0;ii<im->gdes_c-1;ii++){
698 if((im->gdes[ii].gf == GF_DEF
699 || im->gdes[ii].gf == GF_VDEF
700 || im->gdes[ii].gf == GF_CDEF)
701 && (strcmp(im->gdes[ii].vname,key) == 0)){
708 /* find the largest common denominator for all the numbers
709 in the 0 terminated num array */
714 for (i=0;num[i+1]!=0;i++){
716 rest=num[i] % num[i+1];
717 num[i]=num[i+1]; num[i+1]=rest;
721 /* return i==0?num[i]:num[i-1]; */
725 /* run the rpn calculator on all the VDEF and CDEF arguments */
727 data_calc( image_desc_t *im){
731 long *steparray, rpi;
736 rpnstack_init(&rpnstack);
738 for (gdi=0;gdi<im->gdes_c;gdi++){
739 /* Look for GF_VDEF and GF_CDEF in the same loop,
740 * so CDEFs can use VDEFs and vice versa
742 switch (im->gdes[gdi].gf) {
744 /* A VDEF has no DS. This also signals other parts
745 * of rrdtool that this is a VDEF value, not a CDEF.
747 im->gdes[gdi].ds_cnt = 0;
748 if (vdef_calc(im,gdi)) {
749 rrd_set_error("Error processing VDEF '%s'"
752 rpnstack_free(&rpnstack);
757 im->gdes[gdi].ds_cnt = 1;
758 im->gdes[gdi].ds = 0;
759 im->gdes[gdi].data_first = 1;
760 im->gdes[gdi].start = 0;
761 im->gdes[gdi].end = 0;
766 /* Find the variables in the expression.
767 * - VDEF variables are substituted by their values
768 * and the opcode is changed into OP_NUMBER.
769 * - CDEF variables are analized for their step size,
770 * the lowest common denominator of all the step
771 * sizes of the data sources involved is calculated
772 * and the resulting number is the step size for the
773 * resulting data source.
775 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
776 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
777 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
778 if (im->gdes[ptr].ds_cnt == 0) {
780 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
782 im->gdes[ptr].vname);
783 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
785 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
786 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
788 if ((steparray = rrd_realloc(steparray, (++stepcnt+1)*sizeof(*steparray)))==NULL){
789 rrd_set_error("realloc steparray");
790 rpnstack_free(&rpnstack);
794 steparray[stepcnt-1] = im->gdes[ptr].step;
796 /* adjust start and end of cdef (gdi) so
797 * that it runs from the latest start point
798 * to the earliest endpoint of any of the
799 * rras involved (ptr)
801 if(im->gdes[gdi].start < im->gdes[ptr].start)
802 im->gdes[gdi].start = im->gdes[ptr].start;
804 if(im->gdes[gdi].end == 0 ||
805 im->gdes[gdi].end > im->gdes[ptr].end)
806 im->gdes[gdi].end = im->gdes[ptr].end;
808 /* store pointer to the first element of
809 * the rra providing data for variable,
810 * further save step size and data source
813 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
814 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
815 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
817 /* backoff the *.data ptr; this is done so
818 * rpncalc() function doesn't have to treat
819 * the first case differently
821 } /* if ds_cnt != 0 */
822 } /* if OP_VARIABLE */
823 } /* loop through all rpi */
825 /* move the data pointers to the correct period */
826 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
827 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
828 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
829 if(im->gdes[gdi].start > im->gdes[ptr].start) {
830 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
836 if(steparray == NULL){
837 rrd_set_error("rpn expressions without DEF"
838 " or CDEF variables are not supported");
839 rpnstack_free(&rpnstack);
842 steparray[stepcnt]=0;
843 /* Now find the resulting step. All steps in all
844 * used RRAs have to be visited
846 im->gdes[gdi].step = lcd(steparray);
848 if((im->gdes[gdi].data = malloc((
849 (im->gdes[gdi].end-im->gdes[gdi].start)
850 / im->gdes[gdi].step)
851 * sizeof(double)))==NULL){
852 rrd_set_error("malloc im->gdes[gdi].data");
853 rpnstack_free(&rpnstack);
857 /* Step through the new cdef results array and
858 * calculate the values
860 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
861 now<=im->gdes[gdi].end;
862 now += im->gdes[gdi].step)
864 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
866 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
867 * in this case we are advancing by timesteps;
868 * we use the fact that time_t is a synonym for long
870 if (rpn_calc(rpnp,&rpnstack,(long) now,
871 im->gdes[gdi].data,++dataidx) == -1) {
872 /* rpn_calc sets the error string */
873 rpnstack_free(&rpnstack);
876 } /* enumerate over time steps within a CDEF */
881 } /* enumerate over CDEFs */
882 rpnstack_free(&rpnstack);
886 /* massage data so, that we get one value for each x coordinate in the graph */
888 data_proc( image_desc_t *im ){
890 double pixstep = (double)(im->end-im->start)
891 /(double)im->xsize; /* how much time
892 passes in one pixel */
894 double minval=DNAN,maxval=DNAN;
896 unsigned long gr_time;
898 /* memory for the processed data */
899 for(i=0;i<im->gdes_c;i++){
900 if((im->gdes[i].gf==GF_LINE) ||
901 (im->gdes[i].gf==GF_AREA) ||
902 (im->gdes[i].gf==GF_TICK) ||
903 (im->gdes[i].gf==GF_STACK)){
904 if((im->gdes[i].p_data = malloc((im->xsize +1)
905 * sizeof(rrd_value_t)))==NULL){
906 rrd_set_error("malloc data_proc");
912 for(i=0;i<im->xsize;i++){
914 gr_time = im->start+pixstep*i; /* time of the
918 for(ii=0;ii<im->gdes_c;ii++){
920 switch(im->gdes[ii].gf){
926 vidx = im->gdes[ii].vidx;
930 ((unsigned long)floor(
931 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
933 ) *im->gdes[vidx].ds_cnt
936 if (! isnan(value)) {
938 im->gdes[ii].p_data[i] = paintval;
939 /* GF_TICK: the data values are not relevant for min and max */
940 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
941 if (isnan(minval) || paintval < minval)
943 if (isnan(maxval) || paintval > maxval)
947 im->gdes[ii].p_data[i] = DNAN;
964 /* if min or max have not been asigned a value this is because
965 there was no data in the graph ... this is not good ...
966 lets set these to dummy values then ... */
968 if (isnan(minval)) minval = 0.0;
969 if (isnan(maxval)) maxval = 1.0;
971 /* adjust min and max values */
972 if (isnan(im->minval)
973 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
974 && im->minval > minval))
976 if (isnan(im->maxval)
978 && im->maxval < maxval)){
980 im->maxval = maxval * 1.1;
984 /* make sure min and max are not equal */
985 if (im->minval == im->maxval) {
987 if (! im->logarithmic) {
991 /* make sure min and max are not both zero */
992 if (im->maxval == 0.0) {
1002 /* identify the point where the first gridline, label ... gets placed */
1006 time_t start, /* what is the initial time */
1007 enum tmt_en baseint, /* what is the basic interval */
1008 long basestep /* how many if these do we jump a time */
1012 tm = *localtime(&start);
1015 tm.tm_sec -= tm.tm_sec % basestep; break;
1018 tm.tm_min -= tm.tm_min % basestep;
1023 tm.tm_hour -= tm.tm_hour % basestep; break;
1025 /* we do NOT look at the basestep for this ... */
1028 tm.tm_hour = 0; break;
1030 /* we do NOT look at the basestep for this ... */
1034 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1035 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1042 tm.tm_mon -= tm.tm_mon % basestep; break;
1050 tm.tm_year -= (tm.tm_year+1900) % basestep;
1055 /* identify the point where the next gridline, label ... gets placed */
1058 time_t current, /* what is the initial time */
1059 enum tmt_en baseint, /* what is the basic interval */
1060 long basestep /* how many if these do we jump a time */
1065 tm = *localtime(¤t);
1069 tm.tm_sec += basestep; break;
1071 tm.tm_min += basestep; break;
1073 tm.tm_hour += basestep; break;
1075 tm.tm_mday += basestep; break;
1077 tm.tm_mday += 7*basestep; break;
1079 tm.tm_mon += basestep; break;
1081 tm.tm_year += basestep;
1083 madetime = mktime(&tm);
1084 } while (madetime == -1); /* this is necessary to skip impssible times
1085 like the daylight saving time skips */
1091 /* calculate values required for PRINT and GPRINT functions */
1094 print_calc(image_desc_t *im, char ***prdata)
1096 long i,ii,validsteps;
1099 int graphelement = 0;
1102 double magfact = -1;
1106 if (im->imginfo) prlines++;
1107 for(i=0;i<im->gdes_c;i++){
1108 switch(im->gdes[i].gf){
1111 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1112 rrd_set_error("realloc prdata");
1116 /* PRINT and GPRINT can now print VDEF generated values.
1117 * There's no need to do any calculations on them as these
1118 * calculations were already made.
1120 vidx = im->gdes[i].vidx;
1121 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1122 printval = im->gdes[vidx].vf.val;
1123 printtime = im->gdes[vidx].vf.when;
1124 } else { /* need to calculate max,min,avg etcetera */
1125 max_ii =((im->gdes[vidx].end
1126 - im->gdes[vidx].start)
1127 / im->gdes[vidx].step
1128 * im->gdes[vidx].ds_cnt);
1131 for( ii=im->gdes[vidx].ds;
1133 ii+=im->gdes[vidx].ds_cnt){
1134 if (! finite(im->gdes[vidx].data[ii]))
1136 if (isnan(printval)){
1137 printval = im->gdes[vidx].data[ii];
1142 switch (im->gdes[i].cf){
1145 case CF_DEVSEASONAL:
1149 printval += im->gdes[vidx].data[ii];
1152 printval = min( printval, im->gdes[vidx].data[ii]);
1156 printval = max( printval, im->gdes[vidx].data[ii]);
1159 printval = im->gdes[vidx].data[ii];
1162 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1163 if (validsteps > 1) {
1164 printval = (printval / validsteps);
1167 } /* prepare printval */
1169 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1170 if (im->gdes[i].gf == GF_PRINT){
1171 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1172 sprintf((*prdata)[prlines-2],"%s (%lu)",
1173 ctime(&printtime),printtime);
1174 (*prdata)[prlines-1] = NULL;
1176 sprintf(im->gdes[i].legend,"%s (%lu)",
1177 ctime(&printtime),printtime);
1181 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1182 /* Magfact is set to -1 upon entry to print_calc. If it
1183 * is still less than 0, then we need to run auto_scale.
1184 * Otherwise, put the value into the correct units. If
1185 * the value is 0, then do not set the symbol or magnification
1186 * so next the calculation will be performed again. */
1187 if (magfact < 0.0) {
1188 auto_scale(im,&printval,&si_symb,&magfact);
1189 if (printval == 0.0)
1192 printval /= magfact;
1194 *(++percent_s) = 's';
1195 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1196 auto_scale(im,&printval,&si_symb,&magfact);
1199 if (im->gdes[i].gf == GF_PRINT){
1200 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1201 if (bad_format(im->gdes[i].format)) {
1202 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1205 #ifdef HAVE_SNPRINTF
1206 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1208 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1210 (*prdata)[prlines-1] = NULL;
1214 if (bad_format(im->gdes[i].format)) {
1215 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1218 #ifdef HAVE_SNPRINTF
1219 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1221 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1243 return graphelement;
1247 /* place legends with color spots */
1249 leg_place(image_desc_t *im)
1252 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1253 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1254 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1255 int fill=0, fill_last;
1257 int leg_x = border, leg_y = im->yimg;
1261 char prt_fctn; /*special printfunctions */
1264 if( !(im->extra_flags & NOLEGEND) ) {
1265 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1266 rrd_set_error("malloc for legspace");
1270 for(i=0;i<im->gdes_c;i++){
1273 leg_cc = strlen(im->gdes[i].legend);
1275 /* is there a controle code ant the end of the legend string ? */
1276 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1277 prt_fctn = im->gdes[i].legend[leg_cc-1];
1279 im->gdes[i].legend[leg_cc] = '\0';
1283 /* remove exess space */
1284 while (prt_fctn=='g' &&
1286 im->gdes[i].legend[leg_cc-1]==' '){
1288 im->gdes[i].legend[leg_cc]='\0';
1291 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1294 /* no interleg space if string ends in \g */
1295 fill += legspace[i];
1297 if (im->gdes[i].gf != GF_GPRINT &&
1298 im->gdes[i].gf != GF_COMMENT) {
1301 fill += gfx_get_text_width(im->canvas, fill+border,
1302 im->text_prop[TEXT_PROP_LEGEND].font,
1303 im->text_prop[TEXT_PROP_LEGEND].size,
1305 im->gdes[i].legend);
1310 /* who said there was a special tag ... ?*/
1311 if (prt_fctn=='g') {
1314 if (prt_fctn == '\0') {
1315 if (i == im->gdes_c -1 ) prt_fctn ='l';
1317 /* is it time to place the legends ? */
1318 if (fill > im->ximg - 2*border){
1333 if (prt_fctn != '\0'){
1335 if (leg_c >= 2 && prt_fctn == 'j') {
1336 glue = (im->ximg - fill - 2* border) / (leg_c-1);
1340 if (prt_fctn =='c') leg_x = (im->ximg - fill) / 2.0;
1341 if (prt_fctn =='r') leg_x = im->ximg - fill - border;
1343 for(ii=mark;ii<=i;ii++){
1344 if(im->gdes[ii].legend[0]=='\0')
1346 im->gdes[ii].leg_x = leg_x;
1347 im->gdes[ii].leg_y = leg_y;
1349 gfx_get_text_width(im->canvas, leg_x,
1350 im->text_prop[TEXT_PROP_LEGEND].font,
1351 im->text_prop[TEXT_PROP_LEGEND].size,
1353 im->gdes[ii].legend)
1356 if (im->gdes[ii].gf != GF_GPRINT &&
1357 im->gdes[ii].gf != GF_COMMENT)
1360 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1361 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1373 /* create a grid on the graph. it determines what to do
1374 from the values of xsize, start and end */
1376 /* the xaxis labels are determined from the number of seconds per pixel
1377 in the requested graph */
1382 horizontal_grid(image_desc_t *im)
1390 char graph_label[100];
1392 int labfact,gridind;
1393 int decimals, fractionals;
1398 range = im->maxval - im->minval;
1399 scaledrange = range / im->magfact;
1401 /* does the scale of this graph make it impossible to put lines
1402 on it? If so, give up. */
1403 if (isnan(scaledrange)) {
1407 /* find grid spaceing */
1409 if(isnan(im->ygridstep)){
1410 if(im->extra_flags & ALTYGRID) {
1411 /* find the value with max number of digits. Get number of digits */
1412 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1413 if(decimals <= 0) /* everything is small. make place for zero */
1416 fractionals = floor(log10(range));
1417 if(fractionals < 0) /* small amplitude. */
1418 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1420 sprintf(labfmt, "%%%d.1f", decimals + 1);
1421 gridstep = pow((double)10, (double)fractionals);
1422 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1424 /* should have at least 5 lines but no more then 15 */
1425 if(range/gridstep < 5)
1427 if(range/gridstep > 15)
1429 if(range/gridstep > 5) {
1431 if(range/gridstep > 8)
1440 for(i=0;ylab[i].grid > 0;i++){
1441 pixel = im->ysize / (scaledrange / ylab[i].grid);
1442 if (gridind == -1 && pixel > 5) {
1449 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1450 labfact = ylab[gridind].lfac[i];
1455 gridstep = ylab[gridind].grid * im->magfact;
1458 gridstep = im->ygridstep;
1459 labfact = im->ylabfact;
1463 X1=im->xorigin+im->xsize;
1465 sgrid = (int)( im->minval / gridstep - 1);
1466 egrid = (int)( im->maxval / gridstep + 1);
1467 scaledstep = gridstep/im->magfact;
1468 for (i = sgrid; i <= egrid; i++){
1469 Y0=ytr(im,gridstep*i);
1470 if ( Y0 >= im->yorigin-im->ysize
1471 && Y0 <= im->yorigin){
1472 if(i % labfact == 0){
1473 if (i==0 || im->symbol == ' ') {
1475 if(im->extra_flags & ALTYGRID) {
1476 sprintf(graph_label,labfmt,scaledstep*i);
1479 sprintf(graph_label,"%4.1f",scaledstep*i);
1482 sprintf(graph_label,"%4.0f",scaledstep*i);
1486 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1488 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1492 gfx_new_text ( im->canvas,
1493 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1494 im->graph_col[GRC_FONT],
1495 im->text_prop[TEXT_PROP_AXIS].font,
1496 im->text_prop[TEXT_PROP_AXIS].size,
1497 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1499 gfx_new_line ( im->canvas,
1502 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1505 gfx_new_line ( im->canvas,
1508 GRIDWIDTH, im->graph_col[GRC_GRID] );
1516 /* logaritmic horizontal grid */
1518 horizontal_log_grid(image_desc_t *im)
1522 int minoridx=0, majoridx=0;
1523 char graph_label[100];
1525 double value, pixperstep, minstep;
1527 /* find grid spaceing */
1528 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1530 if (isnan(pixpex)) {
1534 for(i=0;yloglab[i][0] > 0;i++){
1535 minstep = log10(yloglab[i][0]);
1536 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1537 if(yloglab[i][ii+2]==0){
1538 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1542 pixperstep = pixpex * minstep;
1543 if(pixperstep > 5){minoridx = i;}
1544 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1548 X1=im->xorigin+im->xsize;
1549 /* paint minor grid */
1550 for (value = pow((double)10, log10(im->minval)
1551 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1552 value <= im->maxval;
1553 value *= yloglab[minoridx][0]){
1554 if (value < im->minval) continue;
1556 while(yloglab[minoridx][++i] > 0){
1557 Y0 = ytr(im,value * yloglab[minoridx][i]);
1558 if (Y0 <= im->yorigin - im->ysize) break;
1559 gfx_new_line ( im->canvas,
1562 GRIDWIDTH, im->graph_col[GRC_GRID] );
1566 /* paint major grid and labels*/
1567 for (value = pow((double)10, log10(im->minval)
1568 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1569 value <= im->maxval;
1570 value *= yloglab[majoridx][0]){
1571 if (value < im->minval) continue;
1573 while(yloglab[majoridx][++i] > 0){
1574 Y0 = ytr(im,value * yloglab[majoridx][i]);
1575 if (Y0 <= im->yorigin - im->ysize) break;
1576 gfx_new_line ( im->canvas,
1579 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1581 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1582 gfx_new_text ( im->canvas,
1583 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1584 im->graph_col[GRC_FONT],
1585 im->text_prop[TEXT_PROP_AXIS].font,
1586 im->text_prop[TEXT_PROP_AXIS].size,
1587 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1599 int xlab_sel; /* which sort of label and grid ? */
1602 char graph_label[100];
1603 double X0,Y0,Y1; /* points for filled graph and more*/
1606 /* the type of time grid is determined by finding
1607 the number of seconds per pixel in the graph */
1610 if(im->xlab_user.minsec == -1){
1611 factor=(im->end - im->start)/im->xsize;
1613 while ( xlab[xlab_sel+1].minsec != -1
1614 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1615 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1616 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1617 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1618 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1619 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1620 im->xlab_user.labst = xlab[xlab_sel].labst;
1621 im->xlab_user.precis = xlab[xlab_sel].precis;
1622 im->xlab_user.stst = xlab[xlab_sel].stst;
1625 /* y coords are the same for every line ... */
1627 Y1 = im->yorigin-im->ysize;
1630 /* paint the minor grid */
1631 for(ti = find_first_time(im->start,
1632 im->xlab_user.gridtm,
1633 im->xlab_user.gridst);
1635 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1637 /* are we inside the graph ? */
1638 if (ti < im->start || ti > im->end) continue;
1640 gfx_new_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1644 /* paint the major grid */
1645 for(ti = find_first_time(im->start,
1646 im->xlab_user.mgridtm,
1647 im->xlab_user.mgridst);
1649 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1651 /* are we inside the graph ? */
1652 if (ti < im->start || ti > im->end) continue;
1654 gfx_new_line(im->canvas,X0,Y0+2, X0,Y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1657 /* paint the labels below the graph */
1658 for(ti = find_first_time(im->start,
1659 im->xlab_user.labtm,
1660 im->xlab_user.labst);
1662 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1664 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1665 /* are we inside the graph ? */
1666 if (ti < im->start || ti > im->end) continue;
1669 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1671 # error "your libc has no strftime I guess we'll abort the exercise here."
1673 gfx_new_text ( im->canvas,
1674 xtr(im,tilab), Y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1675 im->graph_col[GRC_FONT],
1676 im->text_prop[TEXT_PROP_AXIS].font,
1677 im->text_prop[TEXT_PROP_AXIS].size,
1678 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1691 /* draw x and y axis */
1692 gfx_new_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
1693 im->xorigin+im->xsize,im->yorigin-im->ysize,
1694 GRIDWIDTH, im->graph_col[GRC_GRID]);
1696 gfx_new_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
1697 im->xorigin+im->xsize,im->yorigin-im->ysize,
1698 GRIDWIDTH, im->graph_col[GRC_GRID]);
1700 gfx_new_line ( im->canvas, im->xorigin-4,im->yorigin,
1701 im->xorigin+im->xsize+4,im->yorigin,
1702 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1704 gfx_new_line ( im->canvas, im->xorigin,im->yorigin+4,
1705 im->xorigin,im->yorigin-im->ysize-4,
1706 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1709 /* arrow for X axis direction */
1710 gfx_new_area ( im->canvas,
1711 im->xorigin+im->xsize+3, im->yorigin-3,
1712 im->xorigin+im->xsize+3, im->yorigin+4,
1713 im->xorigin+im->xsize+8, im->yorigin+0.5, /* LINEOFFSET */
1714 im->graph_col[GRC_ARROW]);
1721 grid_paint(image_desc_t *im)
1725 double X0,Y0; /* points for filled graph and more*/
1728 /* draw 3d border */
1729 node = gfx_new_area (im->canvas, 0,im->yimg,
1731 2,2,im->graph_col[GRC_SHADEA]);
1732 gfx_add_point( node , im->ximg - 2, 2 );
1733 gfx_add_point( node , im->ximg, 0 );
1734 gfx_add_point( node , 0,0 );
1735 /* gfx_add_point( node , 0,im->yimg ); */
1737 node = gfx_new_area (im->canvas, 2,im->yimg-2,
1738 im->ximg-2,im->yimg-2,
1740 im->graph_col[GRC_SHADEB]);
1741 gfx_add_point( node , im->ximg,0);
1742 gfx_add_point( node , im->ximg,im->yimg);
1743 gfx_add_point( node , 0,im->yimg);
1744 /* gfx_add_point( node , 0,im->yimg ); */
1747 if (im->draw_x_grid == 1 )
1750 if (im->draw_y_grid == 1){
1751 if(im->logarithmic){
1752 res = horizontal_log_grid(im);
1754 res = horizontal_grid(im);
1757 /* dont draw horizontal grid if there is no min and max val */
1759 char *nodata = "No Data found";
1760 gfx_new_text(im->canvas,im->ximg/2, (2*im->yorigin-im->ysize) / 2,
1761 im->graph_col[GRC_FONT],
1762 im->text_prop[TEXT_PROP_AXIS].font,
1763 im->text_prop[TEXT_PROP_AXIS].size,
1764 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1769 /* yaxis description */
1770 if (im->canvas->imgformat != IF_PNG) {
1771 gfx_new_text( im->canvas,
1772 7, (im->yorigin - im->ysize/2),
1773 im->graph_col[GRC_FONT],
1774 im->text_prop[TEXT_PROP_AXIS].font,
1775 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1776 GFX_H_CENTER, GFX_V_CENTER,
1779 /* horrible hack until we can actually print vertically */
1782 int l=strlen(im->ylegend);
1784 for (n=0;n<strlen(im->ylegend);n++) {
1785 s[0]=im->ylegend[n];
1787 gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(l-n),
1788 im->graph_col[GRC_FONT],
1789 im->text_prop[TEXT_PROP_AXIS].font,
1790 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1791 GFX_H_CENTER, GFX_V_CENTER,
1798 gfx_new_text( im->canvas,
1799 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size,
1800 im->graph_col[GRC_FONT],
1801 im->text_prop[TEXT_PROP_TITLE].font,
1802 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1803 GFX_H_CENTER, GFX_V_CENTER,
1807 if( !(im->extra_flags & NOLEGEND) ) {
1808 for(i=0;i<im->gdes_c;i++){
1809 if(im->gdes[i].legend[0] =='\0')
1812 /* im->gdes[i].leg_y is the bottom of the legend */
1813 X0 = im->gdes[i].leg_x;
1814 Y0 = im->gdes[i].leg_y;
1816 if ( im->gdes[i].gf != GF_GPRINT
1817 && im->gdes[i].gf != GF_COMMENT) {
1820 boxH = gfx_get_text_width(im->canvas, 0,
1821 im->text_prop[TEXT_PROP_AXIS].font,
1822 im->text_prop[TEXT_PROP_AXIS].size,
1823 im->tabwidth,"M") * 1.25;
1826 node = gfx_new_area(im->canvas,
1831 gfx_add_point ( node, X0+boxH, Y0-boxV );
1832 node = gfx_new_line(im->canvas,
1835 gfx_add_point(node,X0+boxH,Y0);
1836 gfx_add_point(node,X0+boxH,Y0-boxV);
1837 gfx_close_path(node);
1838 X0 += boxH / 1.25 * 2;
1840 gfx_new_text ( im->canvas, X0, Y0,
1841 im->graph_col[GRC_FONT],
1842 im->text_prop[TEXT_PROP_AXIS].font,
1843 im->text_prop[TEXT_PROP_AXIS].size,
1844 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1845 im->gdes[i].legend );
1851 /*****************************************************
1852 * lazy check make sure we rely need to create this graph
1853 *****************************************************/
1855 int lazy_check(image_desc_t *im){
1858 struct stat imgstat;
1860 if (im->lazy == 0) return 0; /* no lazy option */
1861 if (stat(im->graphfile,&imgstat) != 0)
1862 return 0; /* can't stat */
1863 /* one pixel in the existing graph is more then what we would
1865 if (time(NULL) - imgstat.st_mtime >
1866 (im->end - im->start) / im->xsize)
1868 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1869 return 0; /* the file does not exist */
1870 switch (im->canvas->imgformat) {
1872 size = PngSize(fd,&(im->ximg),&(im->yimg));
1882 pie_part(image_desc_t *im, gfx_color_t color,
1883 double PieCenterX, double PieCenterY, double Radius,
1884 double startangle, double endangle)
1888 double step=M_PI/50; /* Number of iterations for the circle;
1889 ** 10 is definitely too low, more than
1890 ** 50 seems to be overkill
1893 /* Strange but true: we have to work clockwise or else
1894 ** anti aliasing nor transparency don't work.
1896 ** This test is here to make sure we do it right, also
1897 ** this makes the for...next loop more easy to implement.
1898 ** The return will occur if the user enters a negative number
1899 ** (which shouldn't be done according to the specs) or if the
1900 ** programmers do something wrong (which, as we all know, never
1901 ** happens anyway :)
1903 if (endangle<startangle) return;
1905 /* Hidden feature: Radius decreases each full circle */
1907 while (angle>=2*M_PI) {
1912 node=gfx_new_area(im->canvas,
1913 PieCenterX+sin(startangle)*Radius,
1914 PieCenterY-cos(startangle)*Radius,
1917 PieCenterX+sin(endangle)*Radius,
1918 PieCenterY-cos(endangle)*Radius,
1920 for (angle=endangle;angle-startangle>=step;angle-=step) {
1922 PieCenterX+sin(angle)*Radius,
1923 PieCenterY-cos(angle)*Radius );
1928 graph_size_location(image_desc_t *im, int elements, int piechart )
1930 /* The actual size of the image to draw is determined from
1931 ** several sources. The size given on the command line is
1932 ** the graph area but we need more as we have to draw labels
1933 ** and other things outside the graph area
1936 /* +-+-------------------------------------------+
1937 ** |l|.................title.....................|
1938 ** |e+--+-------------------------------+--------+
1941 ** |l| l| main graph area | chart |
1944 ** |r+--+-------------------------------+--------+
1945 ** |e| | x-axis labels | |
1946 ** |v+--+-------------------------------+--------+
1947 ** | |..............legends......................|
1948 ** +-+-------------------------------------------+
1950 int Xvertical=0, Yvertical=0,
1951 Xtitle =0, Ytitle =0,
1952 Xylabel =0, Yylabel =0,
1955 Xxlabel =0, Yxlabel =0,
1957 Xlegend =0, Ylegend =0,
1959 Xspacing =10, Yspacing =10;
1961 if (im->ylegend[0] != '\0') {
1962 Xvertical = im->text_prop[TEXT_PROP_LEGEND].size *2;
1963 Yvertical = im->text_prop[TEXT_PROP_LEGEND].size * (strlen(im->ylegend)+1);
1966 if (im->title[0] != '\0') {
1967 /* The title is placed "inbetween" two text lines so it
1968 ** automatically has some vertical spacing. The horizontal
1969 ** spacing is added here, on each side.
1971 Xtitle = gfx_get_text_width(im->canvas, 0,
1972 im->text_prop[TEXT_PROP_TITLE].font,
1973 im->text_prop[TEXT_PROP_TITLE].size,
1975 im->title) + 2*Xspacing;
1976 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2;
1982 if (im->draw_x_grid) {
1984 Yxlabel=im->text_prop[TEXT_PROP_LEGEND].size *2;
1986 if (im->draw_y_grid) {
1987 Xylabel=im->text_prop[TEXT_PROP_LEGEND].size *6;
1993 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
1998 /* Now calculate the total size. Insert some spacing where
1999 desired. im->xorigin and im->yorigin need to correspond
2000 with the lower left corner of the main graph area or, if
2001 this one is not set, the imaginary box surrounding the
2004 /* The legend width cannot yet be determined, as a result we
2005 ** have problems adjusting the image to it. For now, we just
2006 ** forget about it at all; the legend will have to fit in the
2007 ** size already allocated.
2009 im->ximg = Xylabel + Xmain + Xpie + Xspacing;
2010 if (Xmain) im->ximg += Xspacing;
2011 if (Xpie) im->ximg += Xspacing;
2012 im->xorigin = Xspacing + Xylabel;
2013 if (Xtitle > im->ximg) im->ximg = Xtitle;
2015 im->ximg += Xvertical;
2016 im->xorigin += Xvertical;
2020 /* The vertical size is interesting... we need to compare
2021 ** the sum of {Ytitle, Ymain, Yxlabel, Ylegend} with Yvertical
2022 ** however we need to know {Ytitle+Ymain+Yxlabel} in order to
2023 ** start even thinking about Ylegend.
2025 ** Do it in three portions: First calculate the inner part,
2026 ** then do the legend, then adjust the total height of the img.
2029 /* reserve space for main and/or pie */
2030 im->yimg = Ymain + Yxlabel;
2031 if (im->yimg < Ypie) im->yimg = Ypie;
2032 im->yorigin = im->yimg - Yxlabel;
2033 /* reserve space for the title *or* some padding above the graph */
2036 im->yorigin += Ytitle;
2038 im->yimg += Yspacing;
2039 im->yorigin += Yspacing;
2041 /* reserve space for padding below the graph */
2042 im->yimg += Yspacing;
2045 /* Determine where to place the legends onto the image.
2046 ** Adjust im->yimg to match the space requirements.
2048 if(leg_place(im)==-1)
2051 /* last of three steps: check total height of image */
2052 if (im->yimg < Yvertical) im->yimg = Yvertical;
2055 if (Xlegend > im->ximg) {
2057 /* reposition Pie */
2060 /* The pie is placed in the upper right hand corner,
2061 ** just below the title (if any) and with sufficient
2065 im->pie_x = im->ximg - Xspacing - Xpie/2;
2066 im->pie_y = im->yorigin-Ymain+Ypie/2;
2068 im->pie_x = im->ximg/2;
2069 im->pie_y = im->yorigin-Ypie/2;
2075 /* draw that picture thing ... */
2077 graph_paint(image_desc_t *im, char ***calcpr)
2080 int lazy = lazy_check(im);
2082 double PieStart=0.0;
2086 double areazero = 0.0;
2087 enum gf_en stack_gf = GF_PRINT;
2088 graph_desc_t *lastgdes = NULL;
2090 /* if we are lazy and there is nothing to PRINT ... quit now */
2091 if (lazy && im->prt_c==0) return 0;
2093 /* pull the data from the rrd files ... */
2095 if(data_fetch(im)==-1)
2098 /* evaluate VDEF and CDEF operations ... */
2099 if(data_calc(im)==-1)
2102 /* check if we need to draw a piechart */
2103 for(i=0;i<im->gdes_c;i++){
2104 if (im->gdes[i].gf == GF_PART) {
2110 /* calculate and PRINT and GPRINT definitions. We have to do it at
2111 * this point because it will affect the length of the legends
2112 * if there are no graph elements we stop here ...
2113 * if we are lazy, try to quit ...
2115 i=print_calc(im,calcpr);
2117 if(((i==0)&&(piechart==0)) || lazy) return 0;
2119 /* If there's only the pie chart to draw, signal this */
2120 if (i==0) piechart=2;
2122 /* get actual drawing data and find min and max values*/
2123 if(data_proc(im)==-1)
2126 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
2128 if(!im->rigid && ! im->logarithmic)
2129 expand_range(im); /* make sure the upper and lower limit are
2132 /**************************************************************
2133 *** Calculating sizes and locations became a bit confusing ***
2134 *** so I moved this into a separate function. ***
2135 **************************************************************/
2136 if(graph_size_location(im,i,piechart)==-1)
2139 /* the actual graph is created by going through the individual
2140 graph elements and then drawing them */
2142 node=gfx_new_area ( im->canvas,
2146 im->graph_col[GRC_BACK]);
2148 gfx_add_point(node,0, im->yimg);
2150 if (piechart != 2) {
2151 node=gfx_new_area ( im->canvas,
2152 im->xorigin, im->yorigin,
2153 im->xorigin + im->xsize, im->yorigin,
2154 im->xorigin + im->xsize, im->yorigin-im->ysize,
2155 im->graph_col[GRC_CANVAS]);
2157 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2159 if (im->minval > 0.0)
2160 areazero = im->minval;
2161 if (im->maxval < 0.0)
2162 areazero = im->maxval;
2168 pie_part(im,im->graph_col[GRC_CANVAS],im->pie_x,im->pie_y,im->piesize*0.5,0,2*M_PI);
2171 for(i=0;i<im->gdes_c;i++){
2172 switch(im->gdes[i].gf){
2183 for (ii = 0; ii < im->xsize; ii++)
2185 if (!isnan(im->gdes[i].p_data[ii]) &&
2186 im->gdes[i].p_data[ii] > 0.0)
2188 /* generate a tick */
2189 gfx_new_line(im->canvas, im -> xorigin + ii,
2190 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2194 im -> gdes[i].col );
2200 stack_gf = im->gdes[i].gf;
2202 /* fix data points at oo and -oo */
2203 for(ii=0;ii<im->xsize;ii++){
2204 if (isinf(im->gdes[i].p_data[ii])){
2205 if (im->gdes[i].p_data[ii] > 0) {
2206 im->gdes[i].p_data[ii] = im->maxval ;
2208 im->gdes[i].p_data[ii] = im->minval ;
2214 if (im->gdes[i].col != 0x0){
2215 /* GF_LINE and friend */
2216 if(stack_gf == GF_LINE ){
2218 for(ii=1;ii<im->xsize;ii++){
2219 if ( ! isnan(im->gdes[i].p_data[ii-1])
2220 && ! isnan(im->gdes[i].p_data[ii])){
2222 node = gfx_new_line(im->canvas,
2223 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2224 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2225 im->gdes[i].linewidth,
2228 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2237 for(ii=1;ii<im->xsize;ii++){
2239 if ( ! isnan(im->gdes[i].p_data[ii-1])
2240 && ! isnan(im->gdes[i].p_data[ii])){
2243 if (im->gdes[i].gf == GF_STACK) {
2244 ybase = ytr(im,lastgdes->p_data[ii-1]);
2246 ybase = ytr(im,areazero);
2249 node = gfx_new_area(im->canvas,
2250 ii-1+im->xorigin,ybase,
2251 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2252 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2256 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2260 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2261 /* GF_AREA STACK type*/
2262 if (im->gdes[i].gf == GF_STACK ) {
2264 for (iii=ii-1;iii>area_start;iii--){
2265 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2268 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2273 } /* else GF_LINE */
2274 } /* if color != 0x0 */
2275 /* make sure we do not run into trouble when stacking on NaN */
2276 for(ii=0;ii<im->xsize;ii++){
2277 if (isnan(im->gdes[i].p_data[ii])) {
2280 ybase = ytr(im,lastgdes->p_data[ii-1]);
2282 if (isnan(ybase) || !lastgdes ){
2283 ybase = ytr(im,areazero);
2285 im->gdes[i].p_data[ii] = ybase;
2288 lastgdes = &(im->gdes[i]);
2291 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2292 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2294 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2295 pie_part(im,im->gdes[i].col,
2296 im->pie_x,im->pie_y,im->piesize*0.4,
2297 M_PI*2.0*PieStart/100.0,
2298 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2299 PieStart += im->gdes[i].yrule;
2308 /* grid_paint also does the text */
2311 /* the RULES are the last thing to paint ... */
2312 for(i=0;i<im->gdes_c;i++){
2314 switch(im->gdes[i].gf){
2316 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2317 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2319 if(im->gdes[i].yrule >= im->minval
2320 && im->gdes[i].yrule <= im->maxval)
2321 gfx_new_line(im->canvas,
2322 im->xorigin,ytr(im,im->gdes[i].yrule),
2323 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2324 1.0,im->gdes[i].col);
2327 if(im->gdes[i].xrule == 0) { /* fetch variable */
2328 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2330 if(im->gdes[i].xrule >= im->start
2331 && im->gdes[i].xrule <= im->end)
2332 gfx_new_line(im->canvas,
2333 xtr(im,im->gdes[i].xrule),im->yorigin,
2334 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2335 1.0,im->gdes[i].col);
2343 if (strcmp(im->graphfile,"-")==0) {
2345 /* Change translation mode for stdout to BINARY */
2346 _setmode( _fileno( stdout ), O_BINARY );
2350 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2351 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2356 gfx_render (im->canvas,im->ximg,im->yimg,0x0,fo);
2357 if (strcmp(im->graphfile,"-") != 0)
2363 /*****************************************************
2365 *****************************************************/
2368 gdes_alloc(image_desc_t *im){
2370 long def_step = (im->end-im->start)/im->xsize;
2372 if (im->step > def_step) /* step can be increassed ... no decreassed */
2373 def_step = im->step;
2377 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2378 * sizeof(graph_desc_t)))==NULL){
2379 rrd_set_error("realloc graph_descs");
2384 im->gdes[im->gdes_c-1].step=def_step;
2385 im->gdes[im->gdes_c-1].start=im->start;
2386 im->gdes[im->gdes_c-1].end=im->end;
2387 im->gdes[im->gdes_c-1].vname[0]='\0';
2388 im->gdes[im->gdes_c-1].data=NULL;
2389 im->gdes[im->gdes_c-1].ds_namv=NULL;
2390 im->gdes[im->gdes_c-1].data_first=0;
2391 im->gdes[im->gdes_c-1].p_data=NULL;
2392 im->gdes[im->gdes_c-1].rpnp=NULL;
2393 im->gdes[im->gdes_c-1].col = 0x0;
2394 im->gdes[im->gdes_c-1].legend[0]='\0';
2395 im->gdes[im->gdes_c-1].rrd[0]='\0';
2396 im->gdes[im->gdes_c-1].ds=-1;
2397 im->gdes[im->gdes_c-1].p_data=NULL;
2401 /* copies input untill the first unescaped colon is found
2402 or until input ends. backslashes have to be escaped as well */
2404 scan_for_col(char *input, int len, char *output)
2409 input[inp] != ':' &&
2412 if (input[inp] == '\\' &&
2413 input[inp+1] != '\0' &&
2414 (input[inp+1] == '\\' ||
2415 input[inp+1] == ':')){
2416 output[outp++] = input[++inp];
2419 output[outp++] = input[inp];
2422 output[outp] = '\0';
2426 /* Some surgery done on this function, it became ridiculously big.
2428 ** - initializing now in rrd_graph_init()
2429 ** - options parsing now in rrd_graph_options()
2430 ** - script parsing now in rrd_graph_script()
2433 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2437 rrd_graph_init(&im);
2439 rrd_graph_options(argc,argv,&im);
2440 if (rrd_test_error()) return -1;
2442 if (strlen(argv[optind])>=MAXPATH) {
2443 rrd_set_error("filename (including path) too long");
2446 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2447 im.graphfile[MAXPATH-1]='\0';
2449 rrd_graph_script(argc,argv,&im);
2450 if (rrd_test_error()) return -1;
2452 /* Everything is now read and the actual work can start */
2455 if (graph_paint(&im,prdata)==-1){
2460 /* The image is generated and needs to be output.
2461 ** Also, if needed, print a line with information about the image.
2469 /* maybe prdata is not allocated yet ... lets do it now */
2470 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2471 rrd_set_error("malloc imginfo");
2475 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2477 rrd_set_error("malloc imginfo");
2480 filename=im.graphfile+strlen(im.graphfile);
2481 while(filename > im.graphfile) {
2482 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2486 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.canvas->zoom*im.ximg),(long)(im.canvas->zoom*im.yimg));
2493 rrd_graph_init(image_desc_t *im)
2497 im->xlab_user.minsec = -1;
2503 im->ylegend[0] = '\0';
2504 im->title[0] = '\0';
2507 im->unitsexponent= 9999;
2512 im->logarithmic = 0;
2513 im->ygridstep = DNAN;
2514 im->draw_x_grid = 1;
2515 im->draw_y_grid = 1;
2520 im->canvas = gfx_new_canvas();
2522 for(i=0;i<DIM(graph_col);i++)
2523 im->graph_col[i]=graph_col[i];
2525 for(i=0;i<DIM(text_prop);i++){
2526 im->text_prop[i].size = text_prop[i].size;
2527 im->text_prop[i].font = text_prop[i].font;
2532 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2535 char *parsetime_error = NULL;
2536 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2537 time_t start_tmp=0,end_tmp=0;
2539 struct time_value start_tv, end_tv;
2542 parsetime("end-24h", &start_tv);
2543 parsetime("now", &end_tv);
2546 static struct option long_options[] =
2548 {"start", required_argument, 0, 's'},
2549 {"end", required_argument, 0, 'e'},
2550 {"x-grid", required_argument, 0, 'x'},
2551 {"y-grid", required_argument, 0, 'y'},
2552 {"vertical-label",required_argument,0,'v'},
2553 {"width", required_argument, 0, 'w'},
2554 {"height", required_argument, 0, 'h'},
2555 {"interlaced", no_argument, 0, 'i'},
2556 {"upper-limit",required_argument, 0, 'u'},
2557 {"lower-limit",required_argument, 0, 'l'},
2558 {"rigid", no_argument, 0, 'r'},
2559 {"base", required_argument, 0, 'b'},
2560 {"logarithmic",no_argument, 0, 'o'},
2561 {"color", required_argument, 0, 'c'},
2562 {"font", required_argument, 0, 'n'},
2563 {"title", required_argument, 0, 't'},
2564 {"imginfo", required_argument, 0, 'f'},
2565 {"imgformat", required_argument, 0, 'a'},
2566 {"lazy", no_argument, 0, 'z'},
2567 {"zoom", required_argument, 0, 'm'},
2568 {"no-legend", no_argument, 0, 'g'},
2569 {"alt-y-grid", no_argument, 0, 257 },
2570 {"alt-autoscale", no_argument, 0, 258 },
2571 {"alt-autoscale-max", no_argument, 0, 259 },
2572 {"units-exponent",required_argument, 0, 260},
2573 {"step", required_argument, 0, 261},
2575 int option_index = 0;
2579 opt = getopt_long(argc, argv,
2580 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2581 long_options, &option_index);
2588 im->extra_flags |= ALTYGRID;
2591 im->extra_flags |= ALTAUTOSCALE;
2594 im->extra_flags |= ALTAUTOSCALE_MAX;
2597 im->extra_flags |= NOLEGEND;
2600 im->unitsexponent = atoi(optarg);
2603 im->step = atoi(optarg);
2606 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2607 rrd_set_error( "start time: %s", parsetime_error );
2612 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2613 rrd_set_error( "end time: %s", parsetime_error );
2618 if(strcmp(optarg,"none") == 0){
2624 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2626 &im->xlab_user.gridst,
2628 &im->xlab_user.mgridst,
2630 &im->xlab_user.labst,
2631 &im->xlab_user.precis,
2632 &stroff) == 7 && stroff != 0){
2633 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2634 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2635 rrd_set_error("unknown keyword %s",scan_gtm);
2637 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2638 rrd_set_error("unknown keyword %s",scan_mtm);
2640 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2641 rrd_set_error("unknown keyword %s",scan_ltm);
2644 im->xlab_user.minsec = 1;
2645 im->xlab_user.stst = im->xlab_form;
2647 rrd_set_error("invalid x-grid format");
2653 if(strcmp(optarg,"none") == 0){
2661 &im->ylabfact) == 2) {
2662 if(im->ygridstep<=0){
2663 rrd_set_error("grid step must be > 0");
2665 } else if (im->ylabfact < 1){
2666 rrd_set_error("label factor must be > 0");
2670 rrd_set_error("invalid y-grid format");
2675 strncpy(im->ylegend,optarg,150);
2676 im->ylegend[150]='\0';
2679 im->maxval = atof(optarg);
2682 im->minval = atof(optarg);
2685 im->base = atol(optarg);
2686 if(im->base != 1024 && im->base != 1000 ){
2687 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2692 long_tmp = atol(optarg);
2693 if (long_tmp < 10) {
2694 rrd_set_error("width below 10 pixels");
2697 im->xsize = long_tmp;
2700 long_tmp = atol(optarg);
2701 if (long_tmp < 10) {
2702 rrd_set_error("height below 10 pixels");
2705 im->ysize = long_tmp;
2708 im->canvas->interlaced = 1;
2714 im->imginfo = optarg;
2717 if((im->canvas->imgformat = if_conv(optarg)) == -1) {
2718 rrd_set_error("unsupported graphics format '%s'",optarg);
2726 im->logarithmic = 1;
2727 if (isnan(im->minval))
2733 col_nam,&color) == 2){
2735 if((ci=grc_conv(col_nam)) != -1){
2736 im->graph_col[ci]=color;
2738 rrd_set_error("invalid color name '%s'",col_nam);
2741 rrd_set_error("invalid color def format");
2746 /* originally this used char *prop = "" and
2747 ** char *font = "dummy" however this results
2748 ** in a SEG fault, at least on RH7.1
2750 ** The current implementation isn't proper
2751 ** either, font is never freed and prop uses
2752 ** a fixed width string
2761 prop,&size,font) == 3){
2763 if((sindex=text_prop_conv(prop)) != -1){
2764 im->text_prop[sindex].size=size;
2765 im->text_prop[sindex].font=font;
2766 if (sindex==0) { /* the default */
2767 im->text_prop[TEXT_PROP_TITLE].size=size;
2768 im->text_prop[TEXT_PROP_TITLE].font=font;
2769 im->text_prop[TEXT_PROP_AXIS].size=size;
2770 im->text_prop[TEXT_PROP_AXIS].font=font;
2771 im->text_prop[TEXT_PROP_UNIT].size=size;
2772 im->text_prop[TEXT_PROP_UNIT].font=font;
2773 im->text_prop[TEXT_PROP_LEGEND].size=size;
2774 im->text_prop[TEXT_PROP_LEGEND].font=font;
2777 rrd_set_error("invalid fonttag '%s'",prop);
2781 rrd_set_error("invalid text property format");
2787 im->canvas->zoom = atof(optarg);
2788 if (im->canvas->zoom <= 0.0) {
2789 rrd_set_error("zoom factor must be > 0");
2794 strncpy(im->title,optarg,150);
2795 im->title[150]='\0';
2800 rrd_set_error("unknown option '%c'", optopt);
2802 rrd_set_error("unknown option '%s'",argv[optind-1]);
2807 if (optind >= argc) {
2808 rrd_set_error("missing filename");
2812 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2813 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2817 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2818 /* error string is set in parsetime.c */
2822 if (start_tmp < 3600*24*365*10){
2823 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2827 if (end_tmp < start_tmp) {
2828 rrd_set_error("start (%ld) should be less than end (%ld)",
2829 start_tmp, end_tmp);
2833 im->start = start_tmp;
2838 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2842 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2844 for (i=optind+1;i<argc;i++) {
2849 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2854 /* Each command is one element from *argv[], we call this "line".
2856 ** Each command defines the most current gdes inside struct im.
2857 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2860 gdp=&im->gdes[im->gdes_c-1];
2863 /* function:newvname=string[:ds-name:CF] for xDEF
2864 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2865 ** function:vname#color[:num[:string]] for TICK
2866 ** function:vname-or-num#color[:string] for xRULE,PART
2867 ** function:vname:CF:string for xPRINT
2868 ** function:string for COMMENT
2872 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2874 rrd_set_error("Cannot parse function in line: %s",line);
2878 if(sscanf(funcname,"LINE%lf",&linewidth)){
2879 im->gdes[im->gdes_c-1].gf = GF_LINE;
2880 im->gdes[im->gdes_c-1].linewidth = linewidth;
2882 if ((gdp->gf=gf_conv(funcname))==-1) {
2883 rrd_set_error("'%s' is not a valid function name",funcname);
2889 /* If the error string is set, we exit at the end of the switch */
2892 if (rrd_graph_legend(gdp,&line[argstart])==0)
2893 rrd_set_error("Cannot parse comment in line: %s",line);
2899 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2900 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2902 rrd_set_error("Cannot parse name or num in line: %s",line);
2909 } else if (!rrd_graph_check_vname(im,vname,line)) {
2913 } else break; /* exit due to wrong vname */
2914 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2916 if (strlen(&line[argstart])!=0) {
2917 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2918 rrd_set_error("Cannot parse comment in line: %s",line);
2923 rrd_set_error("STACK must follow another graphing element");
2931 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2933 rrd_set_error("Cannot parse vname in line: %s",line);
2934 else if (rrd_graph_check_vname(im,vname,line))
2935 rrd_set_error("Undefined vname '%s' in line: %s",line);
2937 k=rrd_graph_color(im,&line[argstart],line,1);
2938 if (rrd_test_error()) break;
2939 argstart=argstart+j+k;
2940 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2942 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2945 if (strlen(&line[argstart])!=0)
2946 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2947 rrd_set_error("Cannot parse legend in line: %s",line);
2953 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2955 rrd_set_error("Cannot parse vname in line: '%s'",line);
2959 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2961 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2963 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2964 #define VIDX im->gdes[gdp->vidx]
2966 case -1: /* looks CF but is not really CF */
2967 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2969 case 0: /* CF present and correct */
2970 if (VIDX.gf == GF_VDEF)
2971 rrd_set_error("Don't use CF when printing VDEF");
2974 case 1: /* CF not present */
2975 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2976 else rrd_set_error("Printing DEF or CDEF needs CF");
2979 rrd_set_error("Oops, bug in GPRINT scanning");
2982 if (rrd_test_error()) break;
2984 if (strlen(&line[argstart])!=0) {
2985 if (rrd_graph_legend(gdp,&line[argstart])==0)
2986 rrd_set_error("Cannot parse legend in line: %s",line);
2987 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2988 strcpy(gdp->format, gdp->legend);
2994 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2996 rrd_set_error("Could not parse line: %s",line);
2999 if (find_var(im,gdp->vname)!=-1) {
3000 rrd_set_error("Variable '%s' in line '%s' already in use\n",
3007 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
3009 sscanf(&line[argstart],
3010 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
3011 gdp->ds_nam, symname, &j, &k);
3012 if ((j==0)||(k!=0)) {
3013 rrd_set_error("Cannot parse DS or CF in '%s'",line);
3016 rrd_graph_check_CF(im,symname,line);
3020 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
3022 rrd_set_error("Cannot parse vname in line '%s'",line);
3026 if (rrd_graph_check_vname(im,vname,line)) return;
3027 if ( im->gdes[gdp->vidx].gf != GF_DEF
3028 && im->gdes[gdp->vidx].gf != GF_CDEF) {
3029 rrd_set_error("variable '%s' not DEF nor "
3030 "CDEF in VDEF '%s'", vname,gdp->vname);
3033 vdef_parse(gdp,&line[argstart+strstart]);
3036 if (strstr(&line[argstart],":")!=NULL) {
3037 rrd_set_error("Error in RPN, line: %s",line);
3040 if ((gdp->rpnp = rpn_parse(
3045 rrd_set_error("invalid rpn expression in: %s",line);
3050 default: rrd_set_error("Big oops");
3052 if (rrd_test_error()) {
3059 rrd_set_error("can't make a graph without contents");
3060 im_free(im); /* ??? is this set ??? */
3065 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
3067 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
3068 rrd_set_error("Unknown variable '%s' in %s",varname,err);
3074 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
3077 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
3079 color=strstr(var,"#");
3082 rrd_set_error("Found no color in %s",err);
3091 rest=strstr(color,":");
3099 sscanf(color,"#%6lx%n",&col,&n);
3100 col = (col << 8) + 0xff /* shift left by 8 */;
3101 if (n!=7) rrd_set_error("Color problem in %s",err);
3104 sscanf(color,"#%8lx%n",&col,&n);
3107 rrd_set_error("Color problem in %s",err);
3109 if (rrd_test_error()) return 0;
3115 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
3117 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
3118 rrd_set_error("Unknown CF '%s' in %s",symname,err);
3124 rrd_graph_legend(graph_desc_t *gdp, char *line)
3128 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3130 return (strlen(&line[i])==0);
3134 int bad_format(char *fmt) {
3139 while (*ptr != '\0') {
3140 if (*ptr == '%') {ptr++;
3141 if (*ptr == '\0') return 1;
3142 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3145 if (*ptr == '\0') return 1;
3149 if (*ptr == '\0') return 1;
3150 if (*ptr == 'e' || *ptr == 'f') {
3152 } else { return 1; }
3154 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3163 vdef_parse(gdes,str)
3164 struct graph_desc_t *gdes;
3167 /* A VDEF currently is either "func" or "param,func"
3168 * so the parsing is rather simple. Change if needed.
3175 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3176 if (n==strlen(str)) { /* matched */
3180 sscanf(str,"%29[A-Z]%n",func,&n);
3181 if (n==strlen(str)) { /* matched */
3184 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3191 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3192 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3193 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3194 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3195 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3196 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3197 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3199 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3206 switch (gdes->vf.op) {
3208 if (isnan(param)) { /* no parameter given */
3209 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3215 if (param>=0.0 && param<=100.0) {
3216 gdes->vf.param = param;
3217 gdes->vf.val = DNAN; /* undefined */
3218 gdes->vf.when = 0; /* undefined */
3220 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3234 gdes->vf.param = DNAN;
3235 gdes->vf.val = DNAN;
3238 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3253 graph_desc_t *src,*dst;
3257 dst = &im->gdes[gdi];
3258 src = &im->gdes[dst->vidx];
3259 data = src->data + src->ds;
3260 steps = (src->end - src->start) / src->step;
3263 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3270 switch (dst->vf.op) {
3271 case VDEF_PERCENT: {
3272 rrd_value_t * array;
3276 if ((array = malloc(steps*sizeof(double)))==NULL) {
3277 rrd_set_error("malloc VDEV_PERCENT");
3280 for (step=0;step < steps; step++) {
3281 array[step]=data[step*src->ds_cnt];
3283 qsort(array,step,sizeof(double),vdef_percent_compar);
3285 field = (steps-1)*dst->vf.param/100;
3286 dst->vf.val = array[field];
3287 dst->vf.when = 0; /* no time component */
3289 for(step=0;step<steps;step++)
3290 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3296 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3297 if (step == steps) {
3301 dst->vf.val = data[step*src->ds_cnt];
3302 dst->vf.when = src->start + (step+1)*src->step;
3304 while (step != steps) {
3305 if (finite(data[step*src->ds_cnt])) {
3306 if (data[step*src->ds_cnt] > dst->vf.val) {
3307 dst->vf.val = data[step*src->ds_cnt];
3308 dst->vf.when = src->start + (step+1)*src->step;
3315 case VDEF_AVERAGE: {
3318 for (step=0;step<steps;step++) {
3319 if (finite(data[step*src->ds_cnt])) {
3320 sum += data[step*src->ds_cnt];
3325 if (dst->vf.op == VDEF_TOTAL) {
3326 dst->vf.val = sum*src->step;
3327 dst->vf.when = cnt*src->step; /* not really "when" */
3329 dst->vf.val = sum/cnt;
3330 dst->vf.when = 0; /* no time component */
3340 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3341 if (step == steps) {
3345 dst->vf.val = data[step*src->ds_cnt];
3346 dst->vf.when = src->start + (step+1)*src->step;
3348 while (step != steps) {
3349 if (finite(data[step*src->ds_cnt])) {
3350 if (data[step*src->ds_cnt] < dst->vf.val) {
3351 dst->vf.val = data[step*src->ds_cnt];
3352 dst->vf.when = src->start + (step+1)*src->step;
3359 /* The time value returned here is one step before the
3360 * actual time value. This is the start of the first
3364 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3365 if (step == steps) { /* all entries were NaN */
3369 dst->vf.val = data[step*src->ds_cnt];
3370 dst->vf.when = src->start + step*src->step;
3374 /* The time value returned here is the
3375 * actual time value. This is the end of the last
3379 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3380 if (step < 0) { /* all entries were NaN */
3384 dst->vf.val = data[step*src->ds_cnt];
3385 dst->vf.when = src->start + (step+1)*src->step;
3392 /* NaN < -INF < finite_values < INF */
3394 vdef_percent_compar(a,b)
3397 /* Equality is not returned; this doesn't hurt except
3398 * (maybe) for a little performance.
3401 /* First catch NaN values. They are smallest */
3402 if (isnan( *(double *)a )) return -1;
3403 if (isnan( *(double *)b )) return 1;
3405 /* NaN doesn't reach this part so INF and -INF are extremes.
3406 * The sign from isinf() is compatible with the sign we return
3408 if (isinf( *(double *)a )) return isinf( *(double *)a );
3409 if (isinf( *(double *)b )) return isinf( *(double *)b );
3411 /* If we reach this, both values must be finite */
3412 if ( *(double *)a < *(double *)b ) return -1; else return 1;