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
24 #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf"
25 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
29 text_prop_t text_prop[] = {
30 { 10.0, RRD_DEFAULT_FONT }, /* default */
31 { 12.0, RRD_DEFAULT_FONT }, /* title */
32 { 8.0, RRD_DEFAULT_FONT }, /* axis */
33 { 10.0, RRD_DEFAULT_FONT }, /* unit */
34 { 10.0, RRD_DEFAULT_FONT } /* legend */
38 {0, TMT_SECOND,30, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
39 {2, TMT_MINUTE,1, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
40 {5, TMT_MINUTE,2, TMT_MINUTE,10, TMT_MINUTE,10, 0,"%H:%M"},
41 {10, TMT_MINUTE,5, TMT_MINUTE,20, TMT_MINUTE,20, 0,"%H:%M"},
42 {30, TMT_MINUTE,10, TMT_HOUR,1, TMT_HOUR,1, 0,"%H:%M"},
43 {60, TMT_MINUTE,30, TMT_HOUR,2, TMT_HOUR,2, 0,"%H:%M"},
44 {180, TMT_HOUR,1, TMT_HOUR,6, TMT_HOUR,6, 0,"%H:%M"},
45 /*{300, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly*/
46 {600, TMT_HOUR,6, TMT_DAY,1, TMT_DAY,1, 24*3600,"%a"},
47 {1800, TMT_HOUR,12, TMT_DAY,1, TMT_DAY,2, 24*3600,"%a"},
48 {3600, TMT_DAY,1, TMT_WEEK,1, TMT_WEEK,1, 7*24*3600,"Week %V"},
49 {3*3600, TMT_WEEK,1, TMT_MONTH,1, TMT_WEEK,2, 7*24*3600,"Week %V"},
50 {6*3600, TMT_MONTH,1, TMT_MONTH,1, TMT_MONTH,1, 30*24*3600,"%b"},
51 {48*3600, TMT_MONTH,1, TMT_MONTH,3, TMT_MONTH,3, 30*24*3600,"%b"},
52 {10*24*3600, TMT_YEAR,1, TMT_YEAR,1, TMT_YEAR,1, 365*24*3600,"%y"},
53 {-1,TMT_MONTH,0,TMT_MONTH,0,TMT_MONTH,0,0,""}
56 /* sensible logarithmic y label intervals ...
57 the first element of each row defines the possible starting points on the
58 y axis ... the other specify the */
60 double yloglab[][12]= {{ 1e9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
61 { 1e3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
62 { 1e1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
63 /* { 1e1, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, */
64 { 1e1, 1, 2.5, 5, 7.5, 0, 0, 0, 0, 0, 0, 0 },
65 { 1e1, 1, 2, 4, 6, 8, 0, 0, 0, 0, 0, 0 },
66 { 1e1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 },
67 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }};
69 /* sensible y label intervals ...*/
87 gfx_color_t graph_col[] = /* default colors */
88 { 0xFFFFFFFF, /* canvas */
89 0xF0F0F0FF, /* background */
90 0xD0D0D0FF, /* shade A */
91 0xA0A0A0FF, /* shade B */
92 0x909090FF, /* grid */
93 0xE05050FF, /* major grid */
94 0x000000FF, /* font */
95 0x000000FF, /* frame */
96 0xFF0000FF /* arrow */
103 # define DPRINT(x) (void)(printf x, printf("\n"))
109 /* initialize with xtr(im,0); */
111 xtr(image_desc_t *im,time_t mytime){
114 pixie = (double) im->xsize / (double)(im->end - im->start);
117 return (int)((double)im->xorigin
118 + pixie * ( mytime - im->start ) );
121 /* translate data values into y coordinates */
123 ytr(image_desc_t *im, double value){
128 pixie = (double) im->ysize / (im->maxval - im->minval);
130 pixie = (double) im->ysize / (log10(im->maxval) - log10(im->minval));
132 } else if(!im->logarithmic) {
133 yval = im->yorigin - pixie * (value - im->minval) + 0.5;
135 if (value < im->minval) {
138 yval = im->yorigin - pixie * (log10(value) - log10(im->minval)) + 0.5;
141 /* make sure we don't return anything too unreasonable. GD lib can
142 get terribly slow when drawing lines outside its scope. This is
143 especially problematic in connection with the rigid option */
146 } else if ((int)yval > im->yorigin) {
147 return im->yorigin+2;
148 } else if ((int) yval < im->yorigin - im->ysize){
149 return im->yorigin - im->ysize - 2;
157 /* conversion function for symbolic entry names */
160 #define conv_if(VV,VVV) \
161 if (strcmp(#VV, string) == 0) return VVV ;
163 enum gf_en gf_conv(char *string){
165 conv_if(PRINT,GF_PRINT)
166 conv_if(GPRINT,GF_GPRINT)
167 conv_if(COMMENT,GF_COMMENT)
168 conv_if(HRULE,GF_HRULE)
169 conv_if(VRULE,GF_VRULE)
170 conv_if(LINE,GF_LINE)
171 conv_if(AREA,GF_AREA)
172 conv_if(STACK,GF_STACK)
173 conv_if(TICK,GF_TICK)
175 conv_if(CDEF,GF_CDEF)
176 conv_if(VDEF,GF_VDEF)
177 conv_if(PART,GF_PART)
182 enum if_en if_conv(char *string){
190 enum tmt_en tmt_conv(char *string){
192 conv_if(SECOND,TMT_SECOND)
193 conv_if(MINUTE,TMT_MINUTE)
194 conv_if(HOUR,TMT_HOUR)
196 conv_if(WEEK,TMT_WEEK)
197 conv_if(MONTH,TMT_MONTH)
198 conv_if(YEAR,TMT_YEAR)
202 enum grc_en grc_conv(char *string){
204 conv_if(BACK,GRC_BACK)
205 conv_if(CANVAS,GRC_CANVAS)
206 conv_if(SHADEA,GRC_SHADEA)
207 conv_if(SHADEB,GRC_SHADEB)
208 conv_if(GRID,GRC_GRID)
209 conv_if(MGRID,GRC_MGRID)
210 conv_if(FONT,GRC_FONT)
211 conv_if(FRAME,GRC_FRAME)
212 conv_if(ARROW,GRC_ARROW)
217 enum text_prop_en text_prop_conv(char *string){
219 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
220 conv_if(TITLE,TEXT_PROP_TITLE)
221 conv_if(AXIS,TEXT_PROP_AXIS)
222 conv_if(UNIT,TEXT_PROP_UNIT)
223 conv_if(LEGEND,TEXT_PROP_LEGEND)
233 im_free(image_desc_t *im)
236 if (im == NULL) return 0;
237 for(i=0;i<im->gdes_c;i++){
238 if (im->gdes[i].data_first){
239 /* careful here, because a single pointer can occur several times */
240 free (im->gdes[i].data);
241 if (im->gdes[i].ds_namv){
242 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
243 free(im->gdes[i].ds_namv[ii]);
244 free(im->gdes[i].ds_namv);
247 free (im->gdes[i].p_data);
248 free (im->gdes[i].rpnp);
254 /* find SI magnitude symbol for the given number*/
257 image_desc_t *im, /* image description */
264 char *symbol[] = {"a", /* 10e-18 Atto */
265 "f", /* 10e-15 Femto */
266 "p", /* 10e-12 Pico */
267 "n", /* 10e-9 Nano */
268 "u", /* 10e-6 Micro */
269 "m", /* 10e-3 Milli */
274 "T", /* 10e12 Tera */
275 "P", /* 10e15 Peta */
281 if (*value == 0.0 || isnan(*value) ) {
285 sindex = floor(log(fabs(*value))/log((double)im->base));
286 *magfact = pow((double)im->base, (double)sindex);
287 (*value) /= (*magfact);
289 if ( sindex <= symbcenter && sindex >= -symbcenter) {
290 (*symb_ptr) = symbol[sindex+symbcenter];
298 /* find SI magnitude symbol for the numbers on the y-axis*/
301 image_desc_t *im /* image description */
305 char symbol[] = {'a', /* 10e-18 Atto */
306 'f', /* 10e-15 Femto */
307 'p', /* 10e-12 Pico */
308 'n', /* 10e-9 Nano */
309 'u', /* 10e-6 Micro */
310 'm', /* 10e-3 Milli */
315 'T', /* 10e12 Tera */
316 'P', /* 10e15 Peta */
322 if (im->unitsexponent != 9999) {
323 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
324 digits = floor(im->unitsexponent / 3);
326 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
328 im->magfact = pow((double)im->base , digits);
331 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
334 if ( ((digits+symbcenter) < sizeof(symbol)) &&
335 ((digits+symbcenter) >= 0) )
336 im->symbol = symbol[(int)digits+symbcenter];
341 /* move min and max values around to become sensible */
344 expand_range(image_desc_t *im)
346 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
347 600.0,500.0,400.0,300.0,250.0,
348 200.0,125.0,100.0,90.0,80.0,
349 75.0,70.0,60.0,50.0,40.0,30.0,
350 25.0,20.0,10.0,9.0,8.0,
351 7.0,6.0,5.0,4.0,3.5,3.0,
352 2.5,2.0,1.8,1.5,1.2,1.0,
353 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
355 double scaled_min,scaled_max;
362 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
363 im->minval,im->maxval,im->magfact);
366 if (isnan(im->ygridstep)){
367 if(im->extra_flags & ALTAUTOSCALE) {
368 /* measure the amplitude of the function. Make sure that
369 graph boundaries are slightly higher then max/min vals
370 so we can see amplitude on the graph */
373 delt = im->maxval - im->minval;
375 fact = 2.0 * pow(10.0,
376 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
378 adj = (fact - delt) * 0.55;
380 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
386 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
387 /* measure the amplitude of the function. Make sure that
388 graph boundaries are slightly higher than max vals
389 so we can see amplitude on the graph */
390 adj = (im->maxval - im->minval) * 0.1;
394 scaled_min = im->minval / im->magfact;
395 scaled_max = im->maxval / im->magfact;
397 for (i=1; sensiblevalues[i] > 0; i++){
398 if (sensiblevalues[i-1]>=scaled_min &&
399 sensiblevalues[i]<=scaled_min)
400 im->minval = sensiblevalues[i]*(im->magfact);
402 if (-sensiblevalues[i-1]<=scaled_min &&
403 -sensiblevalues[i]>=scaled_min)
404 im->minval = -sensiblevalues[i-1]*(im->magfact);
406 if (sensiblevalues[i-1] >= scaled_max &&
407 sensiblevalues[i] <= scaled_max)
408 im->maxval = sensiblevalues[i-1]*(im->magfact);
410 if (-sensiblevalues[i-1]<=scaled_max &&
411 -sensiblevalues[i] >=scaled_max)
412 im->maxval = -sensiblevalues[i]*(im->magfact);
416 /* adjust min and max to the grid definition if there is one */
417 im->minval = (double)im->ylabfact * im->ygridstep *
418 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
419 im->maxval = (double)im->ylabfact * im->ygridstep *
420 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
424 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
425 im->minval,im->maxval,im->magfact);
430 /* reduce data reimplementation by Alex */
434 enum cf_en cf, /* which consolidation function ?*/
435 unsigned long cur_step, /* step the data currently is in */
436 time_t *start, /* start, end and step as requested ... */
437 time_t *end, /* ... by the application will be ... */
438 unsigned long *step, /* ... adjusted to represent reality */
439 unsigned long *ds_cnt, /* number of data sources in file */
440 rrd_value_t **data) /* two dimensional array containing the data */
442 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
443 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
444 rrd_value_t *srcptr,*dstptr;
446 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
449 row_cnt = ((*end)-(*start))/cur_step;
455 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
456 row_cnt,reduce_factor,*start,*end,cur_step);
457 for (col=0;col<row_cnt;col++) {
458 printf("time %10lu: ",*start+(col+1)*cur_step);
459 for (i=0;i<*ds_cnt;i++)
460 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
465 /* We have to combine [reduce_factor] rows of the source
466 ** into one row for the destination. Doing this we also
467 ** need to take care to combine the correct rows. First
468 ** alter the start and end time so that they are multiples
469 ** of the new step time. We cannot reduce the amount of
470 ** time so we have to move the end towards the future and
471 ** the start towards the past.
473 end_offset = (*end) % (*step);
474 start_offset = (*start) % (*step);
476 /* If there is a start offset (which cannot be more than
477 ** one destination row), skip the appropriate number of
478 ** source rows and one destination row. The appropriate
479 ** number is what we do know (start_offset/cur_step) of
480 ** the new interval (*step/cur_step aka reduce_factor).
483 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
484 printf("row_cnt before: %lu\n",row_cnt);
487 (*start) = (*start)-start_offset;
488 skiprows=reduce_factor-start_offset/cur_step;
489 srcptr+=skiprows* *ds_cnt;
490 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
494 printf("row_cnt between: %lu\n",row_cnt);
497 /* At the end we have some rows that are not going to be
498 ** used, the amount is end_offset/cur_step
501 (*end) = (*end)-end_offset+(*step);
502 skiprows = end_offset/cur_step;
506 printf("row_cnt after: %lu\n",row_cnt);
509 /* Sanity check: row_cnt should be multiple of reduce_factor */
510 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
512 if (row_cnt%reduce_factor) {
513 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
514 row_cnt,reduce_factor);
515 printf("BUG in reduce_data()\n");
519 /* Now combine reduce_factor intervals at a time
520 ** into one interval for the destination.
523 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
524 for (col=0;col<(*ds_cnt);col++) {
525 rrd_value_t newval=DNAN;
526 unsigned long validval=0;
528 for (i=0;i<reduce_factor;i++) {
529 if (isnan(srcptr[i*(*ds_cnt)+col])) {
533 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
541 newval += srcptr[i*(*ds_cnt)+col];
544 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
547 /* an interval contains a failure if any subintervals contained a failure */
549 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
552 newval = srcptr[i*(*ds_cnt)+col];
557 if (validval == 0){newval = DNAN;} else{
575 srcptr+=(*ds_cnt)*reduce_factor;
576 row_cnt-=reduce_factor;
578 /* If we had to alter the endtime, we didn't have enough
579 ** source rows to fill the last row. Fill it with NaN.
581 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
583 row_cnt = ((*end)-(*start))/ *step;
585 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
586 row_cnt,*start,*end,*step);
587 for (col=0;col<row_cnt;col++) {
588 printf("time %10lu: ",*start+(col+1)*(*step));
589 for (i=0;i<*ds_cnt;i++)
590 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
597 /* get the data required for the graphs from the
601 data_fetch( image_desc_t *im )
605 /* pull the data from the log files ... */
606 for (i=0;i<im->gdes_c;i++){
607 /* only GF_DEF elements fetch data */
608 if (im->gdes[i].gf != GF_DEF)
612 /* do we have it already ?*/
613 for (ii=0;ii<i;ii++){
614 if (im->gdes[ii].gf != GF_DEF)
616 if((strcmp(im->gdes[i].rrd,im->gdes[ii].rrd) == 0)
617 && (im->gdes[i].cf == im->gdes[ii].cf)){
618 /* OK the data it is here already ...
619 * we just copy the header portion */
620 im->gdes[i].start = im->gdes[ii].start;
621 im->gdes[i].end = im->gdes[ii].end;
622 im->gdes[i].step = im->gdes[ii].step;
623 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
624 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
625 im->gdes[i].data = im->gdes[ii].data;
626 im->gdes[i].data_first = 0;
633 unsigned long ft_step = im->gdes[i].step ;
635 if((rrd_fetch_fn(im->gdes[i].rrd,
641 &im->gdes[i].ds_namv,
642 &im->gdes[i].data)) == -1){
645 im->gdes[i].data_first = 1;
647 if (ft_step < im->gdes[i].step) {
648 reduce_data(im->gdes[i].cf,
656 im->gdes[i].step = ft_step;
660 /* lets see if the required data source is realy there */
661 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
662 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
665 if (im->gdes[i].ds== -1){
666 rrd_set_error("No DS called '%s' in '%s'",
667 im->gdes[i].ds_nam,im->gdes[i].rrd);
675 /* evaluate the expressions in the CDEF functions */
677 /*************************************************************
679 *************************************************************/
682 find_var_wrapper(void *arg1, char *key)
684 return find_var((image_desc_t *) arg1, key);
687 /* find gdes containing var*/
689 find_var(image_desc_t *im, char *key){
691 for(ii=0;ii<im->gdes_c-1;ii++){
692 if((im->gdes[ii].gf == GF_DEF
693 || im->gdes[ii].gf == GF_VDEF
694 || im->gdes[ii].gf == GF_CDEF)
695 && (strcmp(im->gdes[ii].vname,key) == 0)){
702 /* find the largest common denominator for all the numbers
703 in the 0 terminated num array */
708 for (i=0;num[i+1]!=0;i++){
710 rest=num[i] % num[i+1];
711 num[i]=num[i+1]; num[i+1]=rest;
715 /* return i==0?num[i]:num[i-1]; */
719 /* run the rpn calculator on all the VDEF and CDEF arguments */
721 data_calc( image_desc_t *im){
725 long *steparray, rpi;
730 rpnstack_init(&rpnstack);
732 for (gdi=0;gdi<im->gdes_c;gdi++){
733 /* Look for GF_VDEF and GF_CDEF in the same loop,
734 * so CDEFs can use VDEFs and vice versa
736 switch (im->gdes[gdi].gf) {
738 /* A VDEF has no DS. This also signals other parts
739 * of rrdtool that this is a VDEF value, not a CDEF.
741 im->gdes[gdi].ds_cnt = 0;
742 if (vdef_calc(im,gdi)) {
743 rrd_set_error("Error processing VDEF '%s'"
746 rpnstack_free(&rpnstack);
751 im->gdes[gdi].ds_cnt = 1;
752 im->gdes[gdi].ds = 0;
753 im->gdes[gdi].data_first = 1;
754 im->gdes[gdi].start = 0;
755 im->gdes[gdi].end = 0;
760 /* Find the variables in the expression.
761 * - VDEF variables are substituted by their values
762 * and the opcode is changed into OP_NUMBER.
763 * - CDEF variables are analized for their step size,
764 * the lowest common denominator of all the step
765 * sizes of the data sources involved is calculated
766 * and the resulting number is the step size for the
767 * resulting data source.
769 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
770 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
771 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
772 if (im->gdes[ptr].ds_cnt == 0) {
774 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
776 im->gdes[ptr].vname);
777 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
779 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
780 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
782 if ((steparray = rrd_realloc(steparray, (++stepcnt+1)*sizeof(*steparray)))==NULL){
783 rrd_set_error("realloc steparray");
784 rpnstack_free(&rpnstack);
788 steparray[stepcnt-1] = im->gdes[ptr].step;
790 /* adjust start and end of cdef (gdi) so
791 * that it runs from the latest start point
792 * to the earliest endpoint of any of the
793 * rras involved (ptr)
795 if(im->gdes[gdi].start < im->gdes[ptr].start)
796 im->gdes[gdi].start = im->gdes[ptr].start;
798 if(im->gdes[gdi].end == 0 ||
799 im->gdes[gdi].end > im->gdes[ptr].end)
800 im->gdes[gdi].end = im->gdes[ptr].end;
802 /* store pointer to the first element of
803 * the rra providing data for variable,
804 * further save step size and data source
807 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
808 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
809 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
811 /* backoff the *.data ptr; this is done so
812 * rpncalc() function doesn't have to treat
813 * the first case differently
815 } /* if ds_cnt != 0 */
816 } /* if OP_VARIABLE */
817 } /* loop through all rpi */
819 if(steparray == NULL){
820 rrd_set_error("rpn expressions without DEF"
821 " or CDEF variables are not supported");
822 rpnstack_free(&rpnstack);
825 steparray[stepcnt]=0;
826 /* Now find the resulting step. All steps in all
827 * used RRAs have to be visited
829 im->gdes[gdi].step = lcd(steparray);
831 if((im->gdes[gdi].data = malloc((
832 (im->gdes[gdi].end-im->gdes[gdi].start)
833 / im->gdes[gdi].step)
834 * sizeof(double)))==NULL){
835 rrd_set_error("malloc im->gdes[gdi].data");
836 rpnstack_free(&rpnstack);
840 /* Step through the new cdef results array and
841 * calculate the values
843 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
844 now<=im->gdes[gdi].end;
845 now += im->gdes[gdi].step)
847 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
849 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
850 * in this case we are advancing by timesteps;
851 * we use the fact that time_t is a synonym for long
853 if (rpn_calc(rpnp,&rpnstack,(long) now,
854 im->gdes[gdi].data,++dataidx) == -1) {
855 /* rpn_calc sets the error string */
856 rpnstack_free(&rpnstack);
859 } /* enumerate over time steps within a CDEF */
864 } /* enumerate over CDEFs */
865 rpnstack_free(&rpnstack);
869 /* massage data so, that we get one value for each x coordinate in the graph */
871 data_proc( image_desc_t *im ){
873 double pixstep = (double)(im->end-im->start)
874 /(double)im->xsize; /* how much time
875 passes in one pixel */
877 double minval=DNAN,maxval=DNAN;
879 unsigned long gr_time;
881 /* memory for the processed data */
882 for(i=0;i<im->gdes_c;i++){
883 if((im->gdes[i].gf==GF_LINE) ||
884 (im->gdes[i].gf==GF_AREA) ||
885 (im->gdes[i].gf==GF_TICK) ||
886 (im->gdes[i].gf==GF_STACK)){
887 if((im->gdes[i].p_data = malloc((im->xsize +1)
888 * sizeof(rrd_value_t)))==NULL){
889 rrd_set_error("malloc data_proc");
895 for(i=0;i<im->xsize;i++){
897 gr_time = im->start+pixstep*i; /* time of the
901 for(ii=0;ii<im->gdes_c;ii++){
903 switch(im->gdes[ii].gf){
909 vidx = im->gdes[ii].vidx;
913 ((unsigned long)floor(
914 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
916 ) *im->gdes[vidx].ds_cnt
919 if (! isnan(value)) {
921 im->gdes[ii].p_data[i] = paintval;
922 /* GF_TICK: the data values are not relevant for min and max */
923 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
924 if (isnan(minval) || paintval < minval)
926 if (isnan(maxval) || paintval > maxval)
930 im->gdes[ii].p_data[i] = DNAN;
947 /* if min or max have not been asigned a value this is because
948 there was no data in the graph ... this is not good ...
949 lets set these to dummy values then ... */
951 if (isnan(minval)) minval = 0.0;
952 if (isnan(maxval)) maxval = 1.0;
954 /* adjust min and max values */
955 if (isnan(im->minval)
956 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
957 && im->minval > minval))
959 if (isnan(im->maxval)
961 && im->maxval < maxval)){
963 im->maxval = maxval * 1.1;
967 /* make sure min and max are not equal */
968 if (im->minval == im->maxval) {
970 if (! im->logarithmic) {
974 /* make sure min and max are not both zero */
975 if (im->maxval == 0.0) {
985 /* identify the point where the first gridline, label ... gets placed */
989 time_t start, /* what is the initial time */
990 enum tmt_en baseint, /* what is the basic interval */
991 long basestep /* how many if these do we jump a time */
995 tm = *localtime(&start);
998 tm.tm_sec -= tm.tm_sec % basestep; break;
1001 tm.tm_min -= tm.tm_min % basestep;
1006 tm.tm_hour -= tm.tm_hour % basestep; break;
1008 /* we do NOT look at the basestep for this ... */
1011 tm.tm_hour = 0; break;
1013 /* we do NOT look at the basestep for this ... */
1017 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1018 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1025 tm.tm_mon -= tm.tm_mon % basestep; break;
1033 tm.tm_year -= (tm.tm_year+1900) % basestep;
1038 /* identify the point where the next gridline, label ... gets placed */
1041 time_t current, /* what is the initial time */
1042 enum tmt_en baseint, /* what is the basic interval */
1043 long basestep /* how many if these do we jump a time */
1048 tm = *localtime(¤t);
1052 tm.tm_sec += basestep; break;
1054 tm.tm_min += basestep; break;
1056 tm.tm_hour += basestep; break;
1058 tm.tm_mday += basestep; break;
1060 tm.tm_mday += 7*basestep; break;
1062 tm.tm_mon += basestep; break;
1064 tm.tm_year += basestep;
1066 madetime = mktime(&tm);
1067 } while (madetime == -1); /* this is necessary to skip impssible times
1068 like the daylight saving time skips */
1074 /* calculate values required for PRINT and GPRINT functions */
1077 print_calc(image_desc_t *im, char ***prdata)
1079 long i,ii,validsteps;
1082 int graphelement = 0;
1085 double magfact = -1;
1089 if (im->imginfo) prlines++;
1090 for(i=0;i<im->gdes_c;i++){
1091 switch(im->gdes[i].gf){
1094 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1095 rrd_set_error("realloc prdata");
1099 /* PRINT and GPRINT can now print VDEF generated values.
1100 * There's no need to do any calculations on them as these
1101 * calculations were already made.
1103 vidx = im->gdes[i].vidx;
1104 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1105 printval = im->gdes[vidx].vf.val;
1106 printtime = im->gdes[vidx].vf.when;
1107 } else { /* need to calculate max,min,avg etcetera */
1108 max_ii =((im->gdes[vidx].end
1109 - im->gdes[vidx].start)
1110 / im->gdes[vidx].step
1111 * im->gdes[vidx].ds_cnt);
1114 for( ii=im->gdes[vidx].ds;
1116 ii+=im->gdes[vidx].ds_cnt){
1117 if (! finite(im->gdes[vidx].data[ii]))
1119 if (isnan(printval)){
1120 printval = im->gdes[vidx].data[ii];
1125 switch (im->gdes[i].cf){
1128 case CF_DEVSEASONAL:
1132 printval += im->gdes[vidx].data[ii];
1135 printval = min( printval, im->gdes[vidx].data[ii]);
1139 printval = max( printval, im->gdes[vidx].data[ii]);
1142 printval = im->gdes[vidx].data[ii];
1145 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1146 if (validsteps > 1) {
1147 printval = (printval / validsteps);
1150 } /* prepare printval */
1152 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1153 if (im->gdes[i].gf == GF_PRINT){
1154 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1155 sprintf((*prdata)[prlines-2],"%s (%lu)",
1156 ctime(&printtime),printtime);
1157 (*prdata)[prlines-1] = NULL;
1159 sprintf(im->gdes[i].legend,"%s (%lu)",
1160 ctime(&printtime),printtime);
1164 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1165 /* Magfact is set to -1 upon entry to print_calc. If it
1166 * is still less than 0, then we need to run auto_scale.
1167 * Otherwise, put the value into the correct units. If
1168 * the value is 0, then do not set the symbol or magnification
1169 * so next the calculation will be performed again. */
1170 if (magfact < 0.0) {
1171 auto_scale(im,&printval,&si_symb,&magfact);
1172 if (printval == 0.0)
1175 printval /= magfact;
1177 *(++percent_s) = 's';
1178 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1179 auto_scale(im,&printval,&si_symb,&magfact);
1182 if (im->gdes[i].gf == GF_PRINT){
1183 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1184 if (bad_format(im->gdes[i].format)) {
1185 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1188 #ifdef HAVE_SNPRINTF
1189 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1191 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1193 (*prdata)[prlines-1] = NULL;
1197 if (bad_format(im->gdes[i].format)) {
1198 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1201 #ifdef HAVE_SNPRINTF
1202 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1204 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1226 return graphelement;
1230 /* place legends with color spots */
1232 leg_place(image_desc_t *im)
1235 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1236 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1237 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1238 int fill=0, fill_last;
1240 int leg_x = border, leg_y = im->ygif;
1244 char prt_fctn; /*special printfunctions */
1247 if( !(im->extra_flags & NOLEGEND) ) {
1248 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1249 rrd_set_error("malloc for legspace");
1253 for(i=0;i<im->gdes_c;i++){
1256 leg_cc = strlen(im->gdes[i].legend);
1258 /* is there a controle code ant the end of the legend string ? */
1259 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1260 prt_fctn = im->gdes[i].legend[leg_cc-1];
1262 im->gdes[i].legend[leg_cc] = '\0';
1266 /* remove exess space */
1267 while (prt_fctn=='g' &&
1269 im->gdes[i].legend[leg_cc-1]==' '){
1271 im->gdes[i].legend[leg_cc]='\0';
1274 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1277 /* no interleg space if string ends in \g */
1278 fill += legspace[i];
1280 if (im->gdes[i].gf != GF_GPRINT &&
1281 im->gdes[i].gf != GF_COMMENT) {
1284 fill += gfx_get_text_width(fill+border,im->text_prop[TEXT_PROP_LEGEND].font,
1285 im->text_prop[TEXT_PROP_LEGEND].size,
1287 im->gdes[i].legend);
1292 /* who said there was a special tag ... ?*/
1293 if (prt_fctn=='g') {
1296 if (prt_fctn == '\0') {
1297 if (i == im->gdes_c -1 ) prt_fctn ='l';
1299 /* is it time to place the legends ? */
1300 if (fill > im->xgif - 2*border){
1315 if (prt_fctn != '\0'){
1317 if (leg_c >= 2 && prt_fctn == 'j') {
1318 glue = (im->xgif - fill - 2* border) / (leg_c-1);
1322 if (prt_fctn =='c') leg_x = (im->xgif - fill) / 2.0;
1323 if (prt_fctn =='r') leg_x = im->xgif - fill - border;
1325 for(ii=mark;ii<=i;ii++){
1326 if(im->gdes[ii].legend[0]=='\0')
1328 im->gdes[ii].leg_x = leg_x;
1329 im->gdes[ii].leg_y = leg_y;
1331 gfx_get_text_width(leg_x,im->text_prop[TEXT_PROP_LEGEND].font,
1332 im->text_prop[TEXT_PROP_LEGEND].size,
1334 im->gdes[ii].legend)
1337 if (im->gdes[ii].gf != GF_GPRINT &&
1338 im->gdes[ii].gf != GF_COMMENT)
1341 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1342 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1354 /* create a grid on the graph. it determines what to do
1355 from the values of xsize, start and end */
1357 /* the xaxis labels are determined from the number of seconds per pixel
1358 in the requested graph */
1363 horizontal_grid(gfx_canvas_t *canvas, image_desc_t *im)
1371 char graph_label[100];
1373 int labfact,gridind;
1374 int decimals, fractionals;
1379 range = im->maxval - im->minval;
1380 scaledrange = range / im->magfact;
1382 /* does the scale of this graph make it impossible to put lines
1383 on it? If so, give up. */
1384 if (isnan(scaledrange)) {
1388 /* find grid spaceing */
1390 if(isnan(im->ygridstep)){
1391 if(im->extra_flags & ALTYGRID) {
1392 /* find the value with max number of digits. Get number of digits */
1393 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1394 if(decimals <= 0) /* everything is small. make place for zero */
1397 fractionals = floor(log10(range));
1398 if(fractionals < 0) /* small amplitude. */
1399 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1401 sprintf(labfmt, "%%%d.1f", decimals + 1);
1402 gridstep = pow((double)10, (double)fractionals);
1403 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1405 /* should have at least 5 lines but no more then 15 */
1406 if(range/gridstep < 5)
1408 if(range/gridstep > 15)
1410 if(range/gridstep > 5) {
1412 if(range/gridstep > 8)
1421 for(i=0;ylab[i].grid > 0;i++){
1422 pixel = im->ysize / (scaledrange / ylab[i].grid);
1423 if (gridind == -1 && pixel > 5) {
1430 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1431 labfact = ylab[gridind].lfac[i];
1436 gridstep = ylab[gridind].grid * im->magfact;
1439 gridstep = im->ygridstep;
1440 labfact = im->ylabfact;
1444 x1=im->xorigin+im->xsize;
1446 sgrid = (int)( im->minval / gridstep - 1);
1447 egrid = (int)( im->maxval / gridstep + 1);
1448 scaledstep = gridstep/im->magfact;
1449 for (i = sgrid; i <= egrid; i++){
1450 y0=ytr(im,gridstep*i);
1451 if ( y0 >= im->yorigin-im->ysize
1452 && y0 <= im->yorigin){
1453 if(i % labfact == 0){
1454 if (i==0 || im->symbol == ' ') {
1456 if(im->extra_flags & ALTYGRID) {
1457 sprintf(graph_label,labfmt,scaledstep*i);
1460 sprintf(graph_label,"%4.1f",scaledstep*i);
1463 sprintf(graph_label,"%4.0f",scaledstep*i);
1467 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1469 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1473 gfx_new_text ( canvas,
1474 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1475 im->graph_col[GRC_FONT],
1476 im->text_prop[TEXT_PROP_AXIS].font,
1477 im->text_prop[TEXT_PROP_AXIS].size,
1478 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1480 gfx_new_line ( canvas,
1483 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1486 gfx_new_line ( canvas,
1489 GRIDWIDTH, im->graph_col[GRC_GRID] );
1497 /* logaritmic horizontal grid */
1499 horizontal_log_grid(gfx_canvas_t *canvas, image_desc_t *im)
1503 int minoridx=0, majoridx=0;
1504 char graph_label[100];
1506 double value, pixperstep, minstep;
1508 /* find grid spaceing */
1509 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1511 if (isnan(pixpex)) {
1515 for(i=0;yloglab[i][0] > 0;i++){
1516 minstep = log10(yloglab[i][0]);
1517 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1518 if(yloglab[i][ii+2]==0){
1519 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1523 pixperstep = pixpex * minstep;
1524 if(pixperstep > 5){minoridx = i;}
1525 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1529 x1=im->xorigin+im->xsize;
1530 /* paint minor grid */
1531 for (value = pow((double)10, log10(im->minval)
1532 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1533 value <= im->maxval;
1534 value *= yloglab[minoridx][0]){
1535 if (value < im->minval) continue;
1537 while(yloglab[minoridx][++i] > 0){
1538 y0 = ytr(im,value * yloglab[minoridx][i]);
1539 if (y0 <= im->yorigin - im->ysize) break;
1540 gfx_new_line ( canvas,
1543 GRIDWIDTH, im->graph_col[GRC_GRID] );
1547 /* paint major grid and labels*/
1548 for (value = pow((double)10, log10(im->minval)
1549 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1550 value <= im->maxval;
1551 value *= yloglab[majoridx][0]){
1552 if (value < im->minval) continue;
1554 while(yloglab[majoridx][++i] > 0){
1555 y0 = ytr(im,value * yloglab[majoridx][i]);
1556 if (y0 <= im->yorigin - im->ysize) break;
1557 gfx_new_line ( canvas,
1560 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1562 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1563 gfx_new_text ( canvas,
1564 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1565 im->graph_col[GRC_FONT],
1566 im->text_prop[TEXT_PROP_AXIS].font,
1567 im->text_prop[TEXT_PROP_AXIS].size,
1568 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1578 gfx_canvas_t *canvas,
1581 int xlab_sel; /* which sort of label and grid ? */
1584 char graph_label[100];
1585 double x0,y0,y1; /* points for filled graph and more*/
1588 /* the type of time grid is determined by finding
1589 the number of seconds per pixel in the graph */
1592 if(im->xlab_user.minsec == -1){
1593 factor=(im->end - im->start)/im->xsize;
1595 while ( xlab[xlab_sel+1].minsec != -1
1596 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1597 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1598 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1599 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1600 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1601 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1602 im->xlab_user.labst = xlab[xlab_sel].labst;
1603 im->xlab_user.precis = xlab[xlab_sel].precis;
1604 im->xlab_user.stst = xlab[xlab_sel].stst;
1607 /* y coords are the same for every line ... */
1609 y1 = im->yorigin-im->ysize;
1612 /* paint the minor grid */
1613 for(ti = find_first_time(im->start,
1614 im->xlab_user.gridtm,
1615 im->xlab_user.gridst);
1617 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1619 /* are we inside the graph ? */
1620 if (ti < im->start || ti > im->end) continue;
1622 gfx_new_line(canvas,x0,y0+1, x0,y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1626 /* paint the major grid */
1627 for(ti = find_first_time(im->start,
1628 im->xlab_user.mgridtm,
1629 im->xlab_user.mgridst);
1631 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1633 /* are we inside the graph ? */
1634 if (ti < im->start || ti > im->end) continue;
1636 gfx_new_line(canvas,x0,y0+2, x0,y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1639 /* paint the labels below the graph */
1640 for(ti = find_first_time(im->start,
1641 im->xlab_user.labtm,
1642 im->xlab_user.labst);
1644 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1646 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1649 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1651 # error "your libc has no strftime I guess we'll abort the exercise here."
1653 gfx_new_text ( canvas,
1654 xtr(im,tilab), y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1655 im->graph_col[GRC_FONT],
1656 im->text_prop[TEXT_PROP_AXIS].font,
1657 im->text_prop[TEXT_PROP_AXIS].size,
1658 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1669 gfx_canvas_t *canvas
1672 /* draw x and y axis */
1673 gfx_new_line ( canvas, im->xorigin+im->xsize,im->yorigin,
1674 im->xorigin+im->xsize,im->yorigin-im->ysize,
1675 GRIDWIDTH, im->graph_col[GRC_GRID]);
1677 gfx_new_line ( canvas, im->xorigin,im->yorigin-im->ysize,
1678 im->xorigin+im->xsize,im->yorigin-im->ysize,
1679 GRIDWIDTH, im->graph_col[GRC_GRID]);
1681 gfx_new_line ( canvas, im->xorigin-4,im->yorigin,
1682 im->xorigin+im->xsize+4,im->yorigin,
1683 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1685 gfx_new_line ( canvas, im->xorigin,im->yorigin+4,
1686 im->xorigin,im->yorigin-im->ysize-4,
1687 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1690 /* arrow for X axis direction */
1691 gfx_new_area ( canvas,
1692 im->xorigin+im->xsize+4, im->yorigin-3,
1693 im->xorigin+im->xsize+4, im->yorigin+3,
1694 im->xorigin+im->xsize+9, im->yorigin,
1695 im->graph_col[GRC_ARROW]);
1704 gfx_canvas_t *canvas
1711 double x0,x1,x2,x3,y0,y1,y2,y3; /* points for filled graph and more*/
1715 /* draw 3d border */
1716 node = gfx_new_area (canvas, 0,im->ygif, 0,0, im->xgif, 0,im->graph_col[GRC_SHADEA]);
1717 gfx_add_point( node , im->xgif - 2, 2 );
1718 gfx_add_point( node , 2,2 );
1719 gfx_add_point( node , 2,im->ygif-2 );
1720 gfx_add_point( node , 0,im->ygif );
1722 node = gfx_new_area (canvas, 0,im->ygif, im->xgif,im->ygif, im->xgif,0,im->graph_col[GRC_SHADEB]);
1723 gfx_add_point( node , im->xgif - 2, 2 );
1724 gfx_add_point( node , im->xgif-2,im->ygif-2 );
1725 gfx_add_point( node , 2,im->ygif-2 );
1726 gfx_add_point( node , 0,im->ygif );
1729 if (im->draw_x_grid == 1 )
1730 vertical_grid(canvas, im);
1732 if (im->draw_y_grid == 1){
1733 if(im->logarithmic){
1734 res = horizontal_log_grid(canvas,im);
1736 res = horizontal_grid(canvas,im);
1739 /* dont draw horizontal grid if there is no min and max val */
1741 char *nodata = "No Data found";
1742 gfx_new_text(canvas,im->xgif/2, (2*im->yorigin-im->ysize) / 2,
1743 im->graph_col[GRC_FONT],
1744 im->text_prop[TEXT_PROP_AXIS].font,
1745 im->text_prop[TEXT_PROP_AXIS].size,
1746 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1751 /* yaxis description */
1752 gfx_new_text( canvas,
1753 7, (im->yorigin - im->ysize/2),
1754 im->graph_col[GRC_FONT],
1755 im->text_prop[TEXT_PROP_AXIS].font,
1756 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1757 GFX_H_CENTER, GFX_V_CENTER,
1761 gfx_new_text( canvas,
1762 im->xgif/2, im->text_prop[TEXT_PROP_TITLE].size*1.5,
1763 im->graph_col[GRC_FONT],
1764 im->text_prop[TEXT_PROP_TITLE].font,
1765 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1766 GFX_H_CENTER, GFX_V_CENTER,
1770 if( !(im->extra_flags & NOLEGEND) ) {
1771 for(i=0;i<im->gdes_c;i++){
1772 if(im->gdes[i].legend[0] =='\0')
1775 if(im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT){
1776 x0 = im->gdes[i].leg_x;
1777 y0 = im->gdes[i].leg_y+1.0;
1784 node = gfx_new_area(canvas, x0,y0,x1,y1,x2,y2 ,im->gdes[i].col);
1785 gfx_add_point ( node, x3, y3 );
1786 gfx_add_point ( node, x0, y0 );
1787 node = gfx_new_line(canvas, x0,y0,x1,y1 ,GRIDWIDTH, im->graph_col[GRC_FRAME]);
1788 gfx_add_point ( node, x2, y2 );
1789 gfx_add_point ( node, x3, y3 );
1790 gfx_add_point ( node, x0, y0 );
1792 gfx_new_text ( canvas, x0+boxH+6, (y0+y2) / 2.0,
1793 im->graph_col[GRC_FONT],
1794 im->text_prop[TEXT_PROP_AXIS].font,
1795 im->text_prop[TEXT_PROP_AXIS].size,
1796 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
1797 im->gdes[i].legend );
1800 x0 = im->gdes[i].leg_x;
1801 y0 = im->gdes[i].leg_y;
1803 gfx_new_text ( canvas, x0, (y0+y2) / 2.0,
1804 im->graph_col[GRC_FONT],
1805 im->text_prop[TEXT_PROP_AXIS].font,
1806 im->text_prop[TEXT_PROP_AXIS].size,
1807 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1808 im->gdes[i].legend );
1816 /*****************************************************
1817 * lazy check make sure we rely need to create this graph
1818 *****************************************************/
1820 int lazy_check(image_desc_t *im){
1823 struct stat gifstat;
1825 if (im->lazy == 0) return 0; /* no lazy option */
1826 if (stat(im->graphfile,&gifstat) != 0)
1827 return 0; /* can't stat */
1828 /* one pixel in the existing graph is more then what we would
1830 if (time(NULL) - gifstat.st_mtime >
1831 (im->end - im->start) / im->xsize)
1833 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1834 return 0; /* the file does not exist */
1835 switch (im->imgformat) {
1837 size = GifSize(fd,&(im->xgif),&(im->ygif));
1840 size = PngSize(fd,&(im->xgif),&(im->ygif));
1848 pie_part(gfx_canvas_t *canvas, gfx_color_t color,
1849 double PieCenterX, double PieCenterY, double Radius,
1850 double startangle, double endangle)
1854 double step=M_PI/50; /* Number of iterations for the circle;
1855 ** 10 is definitely too low, more than
1856 ** 50 seems to be overkill
1859 /* Strange but true: we have to work clockwise or else
1860 ** anti aliasing nor transparency don't work.
1862 ** This test is here to make sure we do it right, also
1863 ** this makes the for...next loop more easy to implement.
1864 ** The return will occur if the user enters a negative number
1865 ** (which shouldn't be done according to the specs) or if the
1866 ** programmers do something wrong (which, as we all know, never
1867 ** happens anyway :)
1869 if (endangle<startangle) return;
1871 /* Hidden feature: Radius decreases each full circle */
1873 while (angle>=2*M_PI) {
1878 node=gfx_new_area(canvas,
1879 PieCenterX+sin(startangle)*Radius,
1880 PieCenterY-cos(startangle)*Radius,
1883 PieCenterX+sin(endangle)*Radius,
1884 PieCenterY-cos(endangle)*Radius,
1886 for (angle=endangle;angle-startangle>=step;angle-=step) {
1888 PieCenterX+sin(angle)*Radius,
1889 PieCenterY-cos(angle)*Radius );
1893 /* draw that picture thing ... */
1895 graph_paint(image_desc_t *im, char ***calcpr)
1898 int lazy = lazy_check(im);
1900 double PieStart=0.0, PieSize=0.0, PieCenterX=0.0, PieCenterY=0.0;
1902 gfx_canvas_t *canvas;
1905 double areazero = 0.0;
1906 enum gf_en stack_gf = GF_PRINT;
1907 graph_desc_t *lastgdes = NULL;
1909 /* if we are lazy and there is nothing to PRINT ... quit now */
1910 if (lazy && im->prt_c==0) return 0;
1912 /* pull the data from the rrd files ... */
1914 if(data_fetch(im)==-1)
1917 /* evaluate VDEF and CDEF operations ... */
1918 if(data_calc(im)==-1)
1921 /* calculate and PRINT and GPRINT definitions. We have to do it at
1922 * this point because it will affect the length of the legends
1923 * if there are no graph elements we stop here ...
1924 * if we are lazy, try to quit ...
1926 i=print_calc(im,calcpr);
1928 if(i==0 || lazy) return 0;
1930 /* get actual drawing data and find min and max values*/
1931 if(data_proc(im)==-1)
1934 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
1936 if(!im->rigid && ! im->logarithmic)
1937 expand_range(im); /* make sure the upper and lower limit are
1940 /* init xtr and ytr */
1941 /* determine the actual size of the gif to draw. The size given
1942 on the cmdline is the graph area. But we need more as we have
1943 draw labels and other things outside the graph area */
1946 im->xorigin = 10 + 9 * im->text_prop[TEXT_PROP_LEGEND].size;
1950 im->yorigin = 10 + im->ysize;
1954 if(im->title[0] != '\0')
1955 im->yorigin += im->text_prop[TEXT_PROP_TITLE].size*3+4;
1957 im->xgif= 20 +im->xsize + im->xorigin;
1958 im->ygif= im->yorigin+2* im->text_prop[TEXT_PROP_LEGEND].size;
1960 /* check if we need to draw a piechart */
1961 for(i=0;i<im->gdes_c;i++){
1962 if (im->gdes[i].gf == GF_PART) {
1969 /* allocate enough space for the piechart itself (PieSize), 20%
1970 ** more for the background and an additional 50 pixels spacing.
1972 if (im->xsize < im->ysize)
1973 PieSize = im->xsize;
1975 PieSize = im->ysize;
1976 im->xgif += PieSize*1.2 + 50;
1978 PieCenterX = im->xorigin + im->xsize + 50 + PieSize*0.6;
1979 PieCenterY = im->yorigin - PieSize*0.5;
1982 /* determine where to place the legends onto the graphics.
1983 and set im->ygif to match space requirements for text */
1984 if(leg_place(im)==-1)
1987 canvas=gfx_new_canvas();
1990 /* the actual graph is created by going through the individual
1991 graph elements and then drawing them */
1993 node=gfx_new_area ( canvas,
1997 im->graph_col[GRC_BACK]);
1999 gfx_add_point(node,0, im->ygif);
2001 node=gfx_new_area ( canvas,
2002 im->xorigin, im->yorigin,
2003 im->xorigin + im->xsize, im->yorigin,
2004 im->xorigin + im->xsize, im->yorigin-im->ysize,
2005 im->graph_col[GRC_CANVAS]);
2007 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2010 /******************************************************************
2011 ** Just to play around. If you see this, I forgot to remove it **
2012 ******************************************************************/
2014 node=gfx_new_area(canvas,
2016 im->xgif, im->ygif-100,
2018 im->graph_col[GRC_CANVAS]);
2019 gfx_add_point(node,0,im->ygif);
2022 ** top left: current way, solid color
2023 ** top right: proper way, solid color
2024 ** bottom left: current way, alpha=0x80, partially overlapping
2025 ** bottom right: proper way, alpha=0x80, partially overlapping
2028 double x,y,x1,y1,x2,y2,x3,y3,x4,y4;
2032 x1= 20; y1=im->ygif-100+20;
2033 x2=3*x+20; y2=im->ygif-100+20;
2034 x3= x+20; y3=im->ygif-100+20+2*y;
2035 x4=4*x+20; y4=im->ygif-100+20+2*y;
2037 node=gfx_new_area(canvas,
2042 gfx_add_point(node,x1,y1+3*y);
2043 node=gfx_new_area(canvas,
2048 gfx_add_point(node,x2+3*x,y2);
2049 node=gfx_new_area(canvas,
2054 gfx_add_point(node,x3,y3+3*y);
2055 node=gfx_new_area(canvas,
2060 gfx_add_point(node,x4+2*x,y4);
2066 pie_part(canvas,im->graph_col[GRC_CANVAS],PieCenterX,PieCenterY,PieSize*0.6,0,2*M_PI);
2069 if (im->minval > 0.0)
2070 areazero = im->minval;
2071 if (im->maxval < 0.0)
2072 areazero = im->maxval;
2074 axis_paint(im,canvas);
2077 for(i=0;i<im->gdes_c;i++){
2078 switch(im->gdes[i].gf){
2089 for (ii = 0; ii < im->xsize; ii++)
2091 if (!isnan(im->gdes[i].p_data[ii]) &&
2092 im->gdes[i].p_data[ii] > 0.0)
2094 /* generate a tick */
2095 gfx_new_line(canvas, im -> xorigin + ii,
2096 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2100 im -> gdes[i].col );
2106 stack_gf = im->gdes[i].gf;
2108 /* fix data points at oo and -oo */
2109 for(ii=0;ii<im->xsize;ii++){
2110 if (isinf(im->gdes[i].p_data[ii])){
2111 if (im->gdes[i].p_data[ii] > 0) {
2112 im->gdes[i].p_data[ii] = im->maxval ;
2114 im->gdes[i].p_data[ii] = im->minval ;
2120 if (im->gdes[i].col != 0x0){
2121 /* GF_LINE and friend */
2122 if(stack_gf == GF_LINE ){
2124 for(ii=1;ii<im->xsize;ii++){
2125 if ( ! isnan(im->gdes[i].p_data[ii-1])
2126 && ! isnan(im->gdes[i].p_data[ii])){
2128 node = gfx_new_line(canvas,
2129 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2130 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2131 im->gdes[i].linewidth,
2134 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2143 for(ii=1;ii<im->xsize;ii++){
2145 if ( ! isnan(im->gdes[i].p_data[ii-1])
2146 && ! isnan(im->gdes[i].p_data[ii])){
2149 if (im->gdes[i].gf == GF_STACK) {
2150 ybase = ytr(im,lastgdes->p_data[ii-1]);
2152 ybase = ytr(im,areazero);
2155 node = gfx_new_area(canvas,
2156 ii-1+im->xorigin,ybase,
2157 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2158 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2162 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2166 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2167 /* GF_AREA STACK type*/
2168 if (im->gdes[i].gf == GF_STACK ) {
2170 for (iii=ii-1;iii>area_start;iii--){
2171 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2174 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2179 } /* else GF_LINE */
2180 } /* if color != 0x0 */
2181 /* make sure we do not run into trouble when stacking on NaN */
2182 for(ii=0;ii<im->xsize;ii++){
2183 if (isnan(im->gdes[i].p_data[ii])) {
2186 ybase = ytr(im,lastgdes->p_data[ii-1]);
2188 if (isnan(ybase) || !lastgdes ){
2189 ybase = ytr(im,areazero);
2191 im->gdes[i].p_data[ii] = ybase;
2194 lastgdes = &(im->gdes[i]);
2197 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2198 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2200 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2201 pie_part(canvas,im->gdes[i].col,
2202 PieCenterX,PieCenterY,PieSize/2,
2203 M_PI*2.0*PieStart/100.0,
2204 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2205 PieStart += im->gdes[i].yrule;
2210 grid_paint(im,canvas);
2212 /* the RULES are the last thing to paint ... */
2213 for(i=0;i<im->gdes_c;i++){
2215 switch(im->gdes[i].gf){
2217 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2218 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2220 if(im->gdes[i].yrule >= im->minval
2221 && im->gdes[i].yrule <= im->maxval)
2222 gfx_new_line(canvas,
2223 im->xorigin,ytr(im,im->gdes[i].yrule),
2224 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2225 1.0,im->gdes[i].col);
2228 if(im->gdes[i].xrule == 0) { /* fetch variable */
2229 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2231 if(im->gdes[i].xrule >= im->start
2232 && im->gdes[i].xrule <= im->end)
2233 gfx_new_line(canvas,
2234 xtr(im,im->gdes[i].xrule),im->yorigin,
2235 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2236 1.0,im->gdes[i].col);
2244 if (strcmp(im->graphfile,"-")==0) {
2246 /* Change translation mode for stdout to BINARY */
2247 _setmode( _fileno( stdout ), O_BINARY );
2251 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2252 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2257 switch (im->imgformat) {
2261 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2264 if (strcmp(im->graphfile,"-") != 0)
2267 gfx_destroy(canvas);
2272 /*****************************************************
2274 *****************************************************/
2277 gdes_alloc(image_desc_t *im){
2279 long def_step = (im->end-im->start)/im->xsize;
2281 if (im->step > def_step) /* step can be increassed ... no decreassed */
2282 def_step = im->step;
2286 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2287 * sizeof(graph_desc_t)))==NULL){
2288 rrd_set_error("realloc graph_descs");
2293 im->gdes[im->gdes_c-1].step=def_step;
2294 im->gdes[im->gdes_c-1].start=im->start;
2295 im->gdes[im->gdes_c-1].end=im->end;
2296 im->gdes[im->gdes_c-1].vname[0]='\0';
2297 im->gdes[im->gdes_c-1].data=NULL;
2298 im->gdes[im->gdes_c-1].ds_namv=NULL;
2299 im->gdes[im->gdes_c-1].data_first=0;
2300 im->gdes[im->gdes_c-1].p_data=NULL;
2301 im->gdes[im->gdes_c-1].rpnp=NULL;
2302 im->gdes[im->gdes_c-1].col = 0x0;
2303 im->gdes[im->gdes_c-1].legend[0]='\0';
2304 im->gdes[im->gdes_c-1].rrd[0]='\0';
2305 im->gdes[im->gdes_c-1].ds=-1;
2306 im->gdes[im->gdes_c-1].p_data=NULL;
2310 /* copies input untill the first unescaped colon is found
2311 or until input ends. backslashes have to be escaped as well */
2313 scan_for_col(char *input, int len, char *output)
2318 input[inp] != ':' &&
2321 if (input[inp] == '\\' &&
2322 input[inp+1] != '\0' &&
2323 (input[inp+1] == '\\' ||
2324 input[inp+1] == ':')){
2325 output[outp++] = input[++inp];
2328 output[outp++] = input[inp];
2331 output[outp] = '\0';
2335 /* Some surgery done on this function, it became ridiculously big.
2337 ** - initializing now in rrd_graph_init()
2338 ** - options parsing now in rrd_graph_options()
2339 ** - script parsing now in rrd_graph_script()
2342 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2346 rrd_graph_init(&im);
2348 rrd_graph_options(argc,argv,&im);
2349 if (rrd_test_error()) return -1;
2351 if (strlen(argv[optind])>=MAXPATH) {
2352 rrd_set_error("filename (including path) too long");
2355 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2356 im.graphfile[MAXPATH-1]='\0';
2358 rrd_graph_script(argc,argv,&im);
2359 if (rrd_test_error()) return -1;
2361 /* Everything is now read and the actual work can start */
2364 if (graph_paint(&im,prdata)==-1){
2369 /* The image is generated and needs to be output.
2370 ** Also, if needed, print a line with information about the image.
2378 /* maybe prdata is not allocated yet ... lets do it now */
2379 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2380 rrd_set_error("malloc imginfo");
2384 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2386 rrd_set_error("malloc imginfo");
2389 filename=im.graphfile+strlen(im.graphfile);
2390 while(filename > im.graphfile) {
2391 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2395 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2402 rrd_graph_init(image_desc_t *im)
2406 im->xlab_user.minsec = -1;
2412 im->ylegend[0] = '\0';
2413 im->title[0] = '\0';
2417 im->unitsexponent= 9999;
2422 im->logarithmic = 0;
2423 im->ygridstep = DNAN;
2424 im->draw_x_grid = 1;
2425 im->draw_y_grid = 1;
2431 im->imgformat = IF_GIF; /* we default to GIF output */
2433 for(i=0;i<DIM(graph_col);i++)
2434 im->graph_col[i]=graph_col[i];
2436 for(i=0;i<DIM(text_prop);i++){
2437 im->text_prop[i].size = text_prop[i].size;
2438 im->text_prop[i].font = text_prop[i].font;
2443 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2446 char *parsetime_error = NULL;
2447 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2448 time_t start_tmp=0,end_tmp=0;
2450 struct time_value start_tv, end_tv;
2453 parsetime("end-24h", &start_tv);
2454 parsetime("now", &end_tv);
2457 static struct option long_options[] =
2459 {"start", required_argument, 0, 's'},
2460 {"end", required_argument, 0, 'e'},
2461 {"x-grid", required_argument, 0, 'x'},
2462 {"y-grid", required_argument, 0, 'y'},
2463 {"vertical-label",required_argument,0,'v'},
2464 {"width", required_argument, 0, 'w'},
2465 {"height", required_argument, 0, 'h'},
2466 {"interlaced", no_argument, 0, 'i'},
2467 {"upper-limit",required_argument, 0, 'u'},
2468 {"lower-limit",required_argument, 0, 'l'},
2469 {"rigid", no_argument, 0, 'r'},
2470 {"base", required_argument, 0, 'b'},
2471 {"logarithmic",no_argument, 0, 'o'},
2472 {"color", required_argument, 0, 'c'},
2473 {"font", required_argument, 0, 'n'},
2474 {"title", required_argument, 0, 't'},
2475 {"imginfo", required_argument, 0, 'f'},
2476 {"imgformat", required_argument, 0, 'a'},
2477 {"lazy", no_argument, 0, 'z'},
2478 {"zoom", required_argument, 0, 'm'},
2479 {"no-legend", no_argument, 0, 'g'},
2480 {"alt-y-grid", no_argument, 0, 257 },
2481 {"alt-autoscale", no_argument, 0, 258 },
2482 {"alt-autoscale-max", no_argument, 0, 259 },
2483 {"units-exponent",required_argument, 0, 260},
2484 {"step", required_argument, 0, 261},
2486 int option_index = 0;
2490 opt = getopt_long(argc, argv,
2491 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2492 long_options, &option_index);
2499 im->extra_flags |= ALTYGRID;
2502 im->extra_flags |= ALTAUTOSCALE;
2505 im->extra_flags |= ALTAUTOSCALE_MAX;
2508 im->extra_flags |= NOLEGEND;
2511 im->unitsexponent = atoi(optarg);
2514 im->step = atoi(optarg);
2517 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2518 rrd_set_error( "start time: %s", parsetime_error );
2523 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2524 rrd_set_error( "end time: %s", parsetime_error );
2529 if(strcmp(optarg,"none") == 0){
2535 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2537 &im->xlab_user.gridst,
2539 &im->xlab_user.mgridst,
2541 &im->xlab_user.labst,
2542 &im->xlab_user.precis,
2543 &stroff) == 7 && stroff != 0){
2544 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2545 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2546 rrd_set_error("unknown keyword %s",scan_gtm);
2548 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2549 rrd_set_error("unknown keyword %s",scan_mtm);
2551 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2552 rrd_set_error("unknown keyword %s",scan_ltm);
2555 im->xlab_user.minsec = 1;
2556 im->xlab_user.stst = im->xlab_form;
2558 rrd_set_error("invalid x-grid format");
2564 if(strcmp(optarg,"none") == 0){
2572 &im->ylabfact) == 2) {
2573 if(im->ygridstep<=0){
2574 rrd_set_error("grid step must be > 0");
2576 } else if (im->ylabfact < 1){
2577 rrd_set_error("label factor must be > 0");
2581 rrd_set_error("invalid y-grid format");
2586 strncpy(im->ylegend,optarg,150);
2587 im->ylegend[150]='\0';
2590 im->maxval = atof(optarg);
2593 im->minval = atof(optarg);
2596 im->base = atol(optarg);
2597 if(im->base != 1024 && im->base != 1000 ){
2598 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2603 long_tmp = atol(optarg);
2604 if (long_tmp < 10) {
2605 rrd_set_error("width below 10 pixels");
2608 im->xsize = long_tmp;
2611 long_tmp = atol(optarg);
2612 if (long_tmp < 10) {
2613 rrd_set_error("height below 10 pixels");
2616 im->ysize = long_tmp;
2625 im->imginfo = optarg;
2628 if((im->imgformat = if_conv(optarg)) == -1) {
2629 rrd_set_error("unsupported graphics format '%s'",optarg);
2637 im->logarithmic = 1;
2638 if (isnan(im->minval))
2644 col_nam,&color) == 2){
2646 if((ci=grc_conv(col_nam)) != -1){
2647 im->graph_col[ci]=color;
2649 rrd_set_error("invalid color name '%s'",col_nam);
2652 rrd_set_error("invalid color def format");
2657 /* originally this used char *prop = "" and
2658 ** char *font = "dummy" however this results
2659 ** in a SEG fault, at least on RH7.1
2661 ** The current implementation isn't proper
2662 ** either, font is never freed and prop uses
2663 ** a fixed width string
2672 prop,&size,font) == 3){
2674 if((sindex=text_prop_conv(prop)) != -1){
2675 im->text_prop[sindex].size=size;
2676 im->text_prop[sindex].font=font;
2677 if (sindex==0) { /* the default */
2678 im->text_prop[TEXT_PROP_TITLE].size=size;
2679 im->text_prop[TEXT_PROP_TITLE].font=font;
2680 im->text_prop[TEXT_PROP_AXIS].size=size;
2681 im->text_prop[TEXT_PROP_AXIS].font=font;
2682 im->text_prop[TEXT_PROP_UNIT].size=size;
2683 im->text_prop[TEXT_PROP_UNIT].font=font;
2684 im->text_prop[TEXT_PROP_LEGEND].size=size;
2685 im->text_prop[TEXT_PROP_LEGEND].font=font;
2688 rrd_set_error("invalid fonttag '%s'",prop);
2692 rrd_set_error("invalid text property format");
2698 im->zoom= atof(optarg);
2699 if (im->zoom <= 0.0) {
2700 rrd_set_error("zoom factor must be > 0");
2705 strncpy(im->title,optarg,150);
2706 im->title[150]='\0';
2711 rrd_set_error("unknown option '%c'", optopt);
2713 rrd_set_error("unknown option '%s'",argv[optind-1]);
2718 if (optind >= argc) {
2719 rrd_set_error("missing filename");
2723 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2724 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2728 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2729 /* error string is set in parsetime.c */
2733 if (start_tmp < 3600*24*365*10){
2734 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2738 if (end_tmp < start_tmp) {
2739 rrd_set_error("start (%ld) should be less than end (%ld)",
2740 start_tmp, end_tmp);
2744 im->start = start_tmp;
2749 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2753 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2755 for (i=optind+1;i<argc;i++) {
2760 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2765 /* Each command is one element from *argv[], we call this "line".
2767 ** Each command defines the most current gdes inside struct im.
2768 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2771 gdp=&im->gdes[im->gdes_c-1];
2774 /* function:newvname=string[:ds-name:CF] for xDEF
2775 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2776 ** function:vname#color[:num[:string]] for TICK
2777 ** function:vname-or-num#color[:string] for xRULE,PART
2778 ** function:vname:CF:string for xPRINT
2779 ** function:string for COMMENT
2783 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2785 rrd_set_error("Cannot parse function in line: %s",line);
2789 if(sscanf(funcname,"LINE%lf",&linewidth)){
2790 im->gdes[im->gdes_c-1].gf = GF_LINE;
2791 im->gdes[im->gdes_c-1].linewidth = linewidth;
2793 if ((gdp->gf=gf_conv(funcname))==-1) {
2794 rrd_set_error("'%s' is not a valid function name",funcname);
2800 /* If the error string is set, we exit at the end of the switch */
2803 if (rrd_graph_legend(gdp,&line[argstart])==0)
2804 rrd_set_error("Cannot parse comment in line: %s",line);
2810 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2811 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2813 rrd_set_error("Cannot parse name or num in line: %s",line);
2820 } else if (!rrd_graph_check_vname(im,vname,line)) {
2824 } else break; /* exit due to wrong vname */
2825 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2827 if (strlen(&line[argstart])!=0) {
2828 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2829 rrd_set_error("Cannot parse comment in line: %s",line);
2834 rrd_set_error("STACK must follow another graphing element");
2842 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2844 rrd_set_error("Cannot parse vname in line: %s",line);
2845 else if (rrd_graph_check_vname(im,vname,line))
2846 rrd_set_error("Undefined vname '%s' in line: %s",line);
2848 k=rrd_graph_color(im,&line[argstart],line,1);
2849 if (rrd_test_error()) break;
2850 argstart=argstart+j+k;
2851 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2853 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2856 if (strlen(&line[argstart])!=0)
2857 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2858 rrd_set_error("Cannot parse legend in line: %s",line);
2864 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2866 rrd_set_error("Cannot parse vname in line: '%s'",line);
2870 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2872 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2874 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2875 #define VIDX im->gdes[gdp->vidx]
2877 case -1: /* looks CF but is not really CF */
2878 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2880 case 0: /* CF present and correct */
2881 if (VIDX.gf == GF_VDEF)
2882 rrd_set_error("Don't use CF when printing VDEF");
2885 case 1: /* CF not present */
2886 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2887 else rrd_set_error("Printing DEF or CDEF needs CF");
2890 rrd_set_error("Oops, bug in GPRINT scanning");
2893 if (rrd_test_error()) break;
2895 if (strlen(&line[argstart])!=0) {
2896 if (rrd_graph_legend(gdp,&line[argstart])==0)
2897 rrd_set_error("Cannot parse legend in line: %s",line);
2898 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2899 strcpy(gdp->format, gdp->legend);
2905 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2907 rrd_set_error("Could not parse line: %s",line);
2910 if (find_var(im,gdp->vname)!=-1) {
2911 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2918 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2920 sscanf(&line[argstart],
2921 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2922 gdp->ds_nam, symname, &j, &k);
2923 if ((j==0)||(k!=0)) {
2924 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2927 rrd_graph_check_CF(im,symname,line);
2931 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2933 rrd_set_error("Cannot parse vname in line '%s'",line);
2937 if (rrd_graph_check_vname(im,vname,line)) return;
2938 if ( im->gdes[gdp->vidx].gf != GF_DEF
2939 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2940 rrd_set_error("variable '%s' not DEF nor "
2941 "CDEF in VDEF '%s'", vname,gdp->vname);
2944 vdef_parse(gdp,&line[argstart+strstart]);
2947 if (strstr(&line[argstart],":")!=NULL) {
2948 rrd_set_error("Error in RPN, line: %s",line);
2951 if ((gdp->rpnp = rpn_parse(
2956 rrd_set_error("invalid rpn expression in: %s",line);
2961 default: rrd_set_error("Big oops");
2963 if (rrd_test_error()) {
2970 rrd_set_error("can't make a graph without contents");
2971 im_free(im); /* ??? is this set ??? */
2976 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2978 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2979 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2985 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2988 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2990 color=strstr(var,"#");
2993 rrd_set_error("Found no color in %s",err);
3002 rest=strstr(color,":");
3010 sscanf(color,"#%6x%n",&col,&n);
3011 col = (col << 8) + 0xff /* shift left by 8 */;
3012 if (n!=7) rrd_set_error("Color problem in %s",err);
3015 sscanf(color,"#%8x%n",&col,&n);
3018 rrd_set_error("Color problem in %s",err);
3020 if (rrd_test_error()) return 0;
3026 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
3028 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
3029 rrd_set_error("Unknown CF '%s' in %s",symname,err);
3035 rrd_graph_legend(graph_desc_t *gdp, char *line)
3039 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3041 return (strlen(&line[i])==0);
3045 int bad_format(char *fmt) {
3050 while (*ptr != '\0') {
3051 if (*ptr == '%') {ptr++;
3052 if (*ptr == '\0') return 1;
3053 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3056 if (*ptr == '\0') return 1;
3060 if (*ptr == '\0') return 1;
3061 if (*ptr == 'e' || *ptr == 'f') {
3063 } else { return 1; }
3065 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3074 vdef_parse(gdes,str)
3075 struct graph_desc_t *gdes;
3078 /* A VDEF currently is either "func" or "param,func"
3079 * so the parsing is rather simple. Change if needed.
3086 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3087 if (n==strlen(str)) { /* matched */
3091 sscanf(str,"%29[A-Z]%n",func,&n);
3092 if (n==strlen(str)) { /* matched */
3095 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3102 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3103 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3104 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3105 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3106 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3107 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3108 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3110 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3117 switch (gdes->vf.op) {
3119 if (isnan(param)) { /* no parameter given */
3120 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3126 if (param>=0.0 && param<=100.0) {
3127 gdes->vf.param = param;
3128 gdes->vf.val = DNAN; /* undefined */
3129 gdes->vf.when = 0; /* undefined */
3131 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3145 gdes->vf.param = DNAN;
3146 gdes->vf.val = DNAN;
3149 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3164 graph_desc_t *src,*dst;
3168 dst = &im->gdes[gdi];
3169 src = &im->gdes[dst->vidx];
3170 data = src->data + src->ds;
3171 steps = (src->end - src->start) / src->step;
3174 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3181 switch (dst->vf.op) {
3182 case VDEF_PERCENT: {
3183 rrd_value_t * array;
3187 if ((array = malloc(steps*sizeof(double)))==NULL) {
3188 rrd_set_error("malloc VDEV_PERCENT");
3191 for (step=0;step < steps; step++) {
3192 array[step]=data[step*src->ds_cnt];
3194 qsort(array,step,sizeof(double),vdef_percent_compar);
3196 field = (steps-1)*dst->vf.param/100;
3197 dst->vf.val = array[field];
3198 dst->vf.when = 0; /* no time component */
3200 for(step=0;step<steps;step++)
3201 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3207 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3208 if (step == steps) {
3212 dst->vf.val = data[step*src->ds_cnt];
3213 dst->vf.when = src->start + (step+1)*src->step;
3215 while (step != steps) {
3216 if (finite(data[step*src->ds_cnt])) {
3217 if (data[step*src->ds_cnt] > dst->vf.val) {
3218 dst->vf.val = data[step*src->ds_cnt];
3219 dst->vf.when = src->start + (step+1)*src->step;
3226 case VDEF_AVERAGE: {
3229 for (step=0;step<steps;step++) {
3230 if (finite(data[step*src->ds_cnt])) {
3231 sum += data[step*src->ds_cnt];
3236 if (dst->vf.op == VDEF_TOTAL) {
3237 dst->vf.val = sum*src->step;
3238 dst->vf.when = cnt*src->step; /* not really "when" */
3240 dst->vf.val = sum/cnt;
3241 dst->vf.when = 0; /* no time component */
3251 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3252 if (step == steps) {
3256 dst->vf.val = data[step*src->ds_cnt];
3257 dst->vf.when = src->start + (step+1)*src->step;
3259 while (step != steps) {
3260 if (finite(data[step*src->ds_cnt])) {
3261 if (data[step*src->ds_cnt] < dst->vf.val) {
3262 dst->vf.val = data[step*src->ds_cnt];
3263 dst->vf.when = src->start + (step+1)*src->step;
3270 /* The time value returned here is one step before the
3271 * actual time value. This is the start of the first
3275 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3276 if (step == steps) { /* all entries were NaN */
3280 dst->vf.val = data[step*src->ds_cnt];
3281 dst->vf.when = src->start + step*src->step;
3285 /* The time value returned here is the
3286 * actual time value. This is the end of the last
3290 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3291 if (step < 0) { /* all entries were NaN */
3295 dst->vf.val = data[step*src->ds_cnt];
3296 dst->vf.when = src->start + (step+1)*src->step;
3303 /* NaN < -INF < finite_values < INF */
3305 vdef_percent_compar(a,b)
3308 /* Equality is not returned; this doesn't hurt except
3309 * (maybe) for a little performance.
3312 /* First catch NaN values. They are smallest */
3313 if (isnan( *(double *)a )) return -1;
3314 if (isnan( *(double *)b )) return 1;
3316 /* NaN doesn't reach this part so INF and -INF are extremes.
3317 * The sign from isinf() is compatible with the sign we return
3319 if (isinf( *(double *)a )) return isinf( *(double *)a );
3320 if (isinf( *(double *)b )) return isinf( *(double *)b );
3322 /* If we reach this, both values must be finite */
3323 if ( *(double *)a < *(double *)b ) return -1; else return 1;