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 /* draw that picture thing ... */
1850 graph_paint(image_desc_t *im, char ***calcpr)
1853 int lazy = lazy_check(im);
1855 double PieStart=0.0, PieSize, PieCenterX, PieCenterY;
1857 gfx_canvas_t *canvas;
1860 double areazero = 0.0;
1861 enum gf_en stack_gf = GF_PRINT;
1862 graph_desc_t *lastgdes = NULL;
1864 /* if we are lazy and there is nothing to PRINT ... quit now */
1865 if (lazy && im->prt_c==0) return 0;
1867 /* pull the data from the rrd files ... */
1869 if(data_fetch(im)==-1)
1872 /* evaluate VDEF and CDEF operations ... */
1873 if(data_calc(im)==-1)
1876 /* calculate and PRINT and GPRINT definitions. We have to do it at
1877 * this point because it will affect the length of the legends
1878 * if there are no graph elements we stop here ...
1879 * if we are lazy, try to quit ...
1881 i=print_calc(im,calcpr);
1883 if(i==0 || lazy) return 0;
1885 /* get actual drawing data and find min and max values*/
1886 if(data_proc(im)==-1)
1889 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
1891 if(!im->rigid && ! im->logarithmic)
1892 expand_range(im); /* make sure the upper and lower limit are
1895 /* init xtr and ytr */
1896 /* determine the actual size of the gif to draw. The size given
1897 on the cmdline is the graph area. But we need more as we have
1898 draw labels and other things outside the graph area */
1901 im->xorigin = 10 + 9 * im->text_prop[TEXT_PROP_LEGEND].size;
1905 im->yorigin = 10 + im->ysize;
1909 if(im->title[0] != '\0')
1910 im->yorigin += im->text_prop[TEXT_PROP_TITLE].size*3+4;
1912 im->xgif= 20 +im->xsize + im->xorigin;
1913 im->ygif= im->yorigin+2* im->text_prop[TEXT_PROP_LEGEND].size;
1915 /* check if we need to draw a piechart */
1916 for(i=0;i<im->gdes_c;i++){
1917 if (im->gdes[i].gf == GF_PART) {
1924 /* allocate enough space for the piechart itself (PieSize), 20%
1925 ** more for the background and an additional 50 pixels spacing.
1927 if (im->xsize < im->ysize)
1928 PieSize = im->xsize;
1930 PieSize = im->ysize;
1931 im->xgif += PieSize*1.2 + 50;
1933 PieCenterX = im->xorigin + im->xsize + 50 + PieSize*0.6;
1934 PieCenterY = im->yorigin - PieSize*0.5;
1937 /* determine where to place the legends onto the graphics.
1938 and set im->ygif to match space requirements for text */
1939 if(leg_place(im)==-1)
1942 canvas=gfx_new_canvas();
1945 /* the actual graph is created by going through the individual
1946 graph elements and then drawing them */
1948 node=gfx_new_area ( canvas,
1952 im->graph_col[GRC_BACK]);
1954 gfx_add_point(node,0, im->ygif);
1956 node=gfx_new_area ( canvas,
1957 im->xorigin, im->yorigin,
1958 im->xorigin + im->xsize, im->yorigin,
1959 im->xorigin + im->xsize, im->yorigin-im->ysize,
1960 im->graph_col[GRC_CANVAS]);
1962 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
1965 /******************************************************************
1966 ** Just to play around. If you see this, I forgot to remove it **
1967 ******************************************************************/
1969 node=gfx_new_area(canvas,
1971 im->xgif, im->ygif-100,
1973 im->graph_col[GRC_CANVAS]);
1974 gfx_add_point(node,0,im->ygif);
1976 node=gfx_new_line (canvas,
1978 im->xgif-3, im->ygif-100,
1981 gfx_add_point(node,im->xgif-3,im->ygif-3);
1982 gfx_add_point(node,2,im->ygif-3);
1983 gfx_add_point(node,2,im->ygif-100);
1987 node=gfx_new_area ( canvas,
1989 im->xgif-1, im->ygif-99,
1990 im->xgif-1, im->ygif-1,
1991 im->graph_col[GRC_CANVAS]);
1992 gfx_add_point(node,1,im->ygif-1);
2000 node=gfx_new_area(canvas,
2001 PieCenterX,PieCenterY-PieSize*0.6,
2002 PieCenterX,PieCenterY,
2003 PieCenterX,PieCenterY-PieSize*0.6,
2004 im->graph_col[GRC_CANVAS]);
2005 for (n=1;n<500;n++) {
2007 angle=M_PI*2.0*n/500.0;
2009 PieCenterX+sin(angle)*PieSize*0.6,
2010 PieCenterY-cos(angle)*PieSize*0.6 );
2014 if (im->minval > 0.0)
2015 areazero = im->minval;
2016 if (im->maxval < 0.0)
2017 areazero = im->maxval;
2019 axis_paint(im,canvas);
2022 for(i=0;i<im->gdes_c;i++){
2023 switch(im->gdes[i].gf){
2034 for (ii = 0; ii < im->xsize; ii++)
2036 if (!isnan(im->gdes[i].p_data[ii]) &&
2037 im->gdes[i].p_data[ii] > 0.0)
2039 /* generate a tick */
2040 gfx_new_line(canvas, im -> xorigin + ii,
2041 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2045 im -> gdes[i].col );
2051 stack_gf = im->gdes[i].gf;
2053 /* fix data points at oo and -oo */
2054 for(ii=0;ii<im->xsize;ii++){
2055 if (isinf(im->gdes[i].p_data[ii])){
2056 if (im->gdes[i].p_data[ii] > 0) {
2057 im->gdes[i].p_data[ii] = im->maxval ;
2059 im->gdes[i].p_data[ii] = im->minval ;
2065 if (im->gdes[i].col != 0x0){
2066 /* GF_LINE and friend */
2067 if(stack_gf == GF_LINE ){
2069 for(ii=1;ii<im->xsize;ii++){
2070 if ( ! isnan(im->gdes[i].p_data[ii-1])
2071 && ! isnan(im->gdes[i].p_data[ii])){
2073 node = gfx_new_line(canvas,
2074 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2075 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2076 im->gdes[i].linewidth,
2079 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2088 for(ii=1;ii<im->xsize;ii++){
2090 if ( ! isnan(im->gdes[i].p_data[ii-1])
2091 && ! isnan(im->gdes[i].p_data[ii])){
2094 if (im->gdes[i].gf == GF_STACK) {
2095 ybase = ytr(im,lastgdes->p_data[ii-1]);
2097 ybase = ytr(im,areazero);
2100 node = gfx_new_area(canvas,
2101 ii-1+im->xorigin,ybase,
2102 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2103 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2107 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2111 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2112 /* GF_AREA STACK type*/
2113 if (im->gdes[i].gf == GF_STACK ) {
2115 for (iii=ii-1;iii>area_start;iii--){
2116 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2119 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2124 } /* else GF_LINE */
2125 } /* if color != 0x0 */
2126 /* make sure we do not run into trouble when stacking on NaN */
2127 for(ii=0;ii<im->xsize;ii++){
2128 if (isnan(im->gdes[i].p_data[ii])) {
2131 ybase = ytr(im,lastgdes->p_data[ii-1]);
2133 if (isnan(ybase) || !lastgdes ){
2134 ybase = ytr(im,areazero);
2136 im->gdes[i].p_data[ii] = ybase;
2139 lastgdes = &(im->gdes[i]);
2142 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2143 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2145 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2146 double angle,endangle;
2149 angle=M_PI*2.0*PieStart/100.0;
2150 endangle=M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0;
2151 node=gfx_new_area(canvas,
2152 PieCenterX+sin(endangle)*PieSize/2,
2153 PieCenterY-cos(endangle)*PieSize/2,
2156 PieCenterX+sin(angle)*PieSize/2,
2157 PieCenterY-cos(angle)*PieSize/2,
2159 for (n=1;n<100;n++) {
2160 angle=M_PI*2.0*(PieStart+n/100.0*im->gdes[i].yrule)/100.0;
2162 PieCenterX+sin(angle)*PieSize/2,
2163 PieCenterY-cos(angle)*PieSize/2 );
2165 PieStart += im->gdes[i].yrule;
2170 grid_paint(im,canvas);
2172 /* the RULES are the last thing to paint ... */
2173 for(i=0;i<im->gdes_c;i++){
2175 switch(im->gdes[i].gf){
2177 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2178 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2180 if(im->gdes[i].yrule >= im->minval
2181 && im->gdes[i].yrule <= im->maxval)
2182 gfx_new_line(canvas,
2183 im->xorigin,ytr(im,im->gdes[i].yrule),
2184 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2185 1.0,im->gdes[i].col);
2188 if(im->gdes[i].xrule == 0) { /* fetch variable */
2189 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2191 if(im->gdes[i].xrule >= im->start
2192 && im->gdes[i].xrule <= im->end)
2193 gfx_new_line(canvas,
2194 xtr(im,im->gdes[i].xrule),im->yorigin,
2195 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2196 1.0,im->gdes[i].col);
2204 if (strcmp(im->graphfile,"-")==0) {
2206 /* Change translation mode for stdout to BINARY */
2207 _setmode( _fileno( stdout ), O_BINARY );
2211 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2212 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2217 switch (im->imgformat) {
2221 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2224 if (strcmp(im->graphfile,"-") != 0)
2227 gfx_destroy(canvas);
2232 /*****************************************************
2234 *****************************************************/
2237 gdes_alloc(image_desc_t *im){
2239 long def_step = (im->end-im->start)/im->xsize;
2241 if (im->step > def_step) /* step can be increassed ... no decreassed */
2242 def_step = im->step;
2246 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2247 * sizeof(graph_desc_t)))==NULL){
2248 rrd_set_error("realloc graph_descs");
2253 im->gdes[im->gdes_c-1].step=def_step;
2254 im->gdes[im->gdes_c-1].start=im->start;
2255 im->gdes[im->gdes_c-1].end=im->end;
2256 im->gdes[im->gdes_c-1].vname[0]='\0';
2257 im->gdes[im->gdes_c-1].data=NULL;
2258 im->gdes[im->gdes_c-1].ds_namv=NULL;
2259 im->gdes[im->gdes_c-1].data_first=0;
2260 im->gdes[im->gdes_c-1].p_data=NULL;
2261 im->gdes[im->gdes_c-1].rpnp=NULL;
2262 im->gdes[im->gdes_c-1].col = 0x0;
2263 im->gdes[im->gdes_c-1].legend[0]='\0';
2264 im->gdes[im->gdes_c-1].rrd[0]='\0';
2265 im->gdes[im->gdes_c-1].ds=-1;
2266 im->gdes[im->gdes_c-1].p_data=NULL;
2270 /* copies input untill the first unescaped colon is found
2271 or until input ends. backslashes have to be escaped as well */
2273 scan_for_col(char *input, int len, char *output)
2278 input[inp] != ':' &&
2281 if (input[inp] == '\\' &&
2282 input[inp+1] != '\0' &&
2283 (input[inp+1] == '\\' ||
2284 input[inp+1] == ':')){
2285 output[outp++] = input[++inp];
2288 output[outp++] = input[inp];
2291 output[outp] = '\0';
2295 /* Some surgery done on this function, it became ridiculously big.
2297 ** - initializing now in rrd_graph_init()
2298 ** - options parsing now in rrd_graph_options()
2299 ** - script parsing now in rrd_graph_script()
2302 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2306 rrd_graph_init(&im);
2308 rrd_graph_options(argc,argv,&im);
2309 if (rrd_test_error()) return -1;
2311 if (strlen(argv[optind])>=MAXPATH) {
2312 rrd_set_error("filename (including path) too long");
2315 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2316 im.graphfile[MAXPATH-1]='\0';
2318 rrd_graph_script(argc,argv,&im);
2319 if (rrd_test_error()) return -1;
2321 /* Everything is now read and the actual work can start */
2324 if (graph_paint(&im,prdata)==-1){
2329 /* The image is generated and needs to be output.
2330 ** Also, if needed, print a line with information about the image.
2338 /* maybe prdata is not allocated yet ... lets do it now */
2339 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2340 rrd_set_error("malloc imginfo");
2344 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2346 rrd_set_error("malloc imginfo");
2349 filename=im.graphfile+strlen(im.graphfile);
2350 while(filename > im.graphfile) {
2351 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2355 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2362 rrd_graph_init(image_desc_t *im)
2366 im->xlab_user.minsec = -1;
2372 im->ylegend[0] = '\0';
2373 im->title[0] = '\0';
2377 im->unitsexponent= 9999;
2382 im->logarithmic = 0;
2383 im->ygridstep = DNAN;
2384 im->draw_x_grid = 1;
2385 im->draw_y_grid = 1;
2391 im->imgformat = IF_GIF; /* we default to GIF output */
2393 for(i=0;i<DIM(graph_col);i++)
2394 im->graph_col[i]=graph_col[i];
2396 for(i=0;i<DIM(text_prop);i++){
2397 im->text_prop[i].size = text_prop[i].size;
2398 im->text_prop[i].font = text_prop[i].font;
2403 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2406 char *parsetime_error = NULL;
2407 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2408 time_t start_tmp=0,end_tmp=0;
2410 struct time_value start_tv, end_tv;
2413 parsetime("end-24h", &start_tv);
2414 parsetime("now", &end_tv);
2417 static struct option long_options[] =
2419 {"start", required_argument, 0, 's'},
2420 {"end", required_argument, 0, 'e'},
2421 {"x-grid", required_argument, 0, 'x'},
2422 {"y-grid", required_argument, 0, 'y'},
2423 {"vertical-label",required_argument,0,'v'},
2424 {"width", required_argument, 0, 'w'},
2425 {"height", required_argument, 0, 'h'},
2426 {"interlaced", no_argument, 0, 'i'},
2427 {"upper-limit",required_argument, 0, 'u'},
2428 {"lower-limit",required_argument, 0, 'l'},
2429 {"rigid", no_argument, 0, 'r'},
2430 {"base", required_argument, 0, 'b'},
2431 {"logarithmic",no_argument, 0, 'o'},
2432 {"color", required_argument, 0, 'c'},
2433 {"font", required_argument, 0, 'n'},
2434 {"title", required_argument, 0, 't'},
2435 {"imginfo", required_argument, 0, 'f'},
2436 {"imgformat", required_argument, 0, 'a'},
2437 {"lazy", no_argument, 0, 'z'},
2438 {"zoom", required_argument, 0, 'm'},
2439 {"no-legend", no_argument, 0, 'g'},
2440 {"alt-y-grid", no_argument, 0, 257 },
2441 {"alt-autoscale", no_argument, 0, 258 },
2442 {"alt-autoscale-max", no_argument, 0, 259 },
2443 {"units-exponent",required_argument, 0, 260},
2444 {"step", required_argument, 0, 261},
2446 int option_index = 0;
2450 opt = getopt_long(argc, argv,
2451 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2452 long_options, &option_index);
2459 im->extra_flags |= ALTYGRID;
2462 im->extra_flags |= ALTAUTOSCALE;
2465 im->extra_flags |= ALTAUTOSCALE_MAX;
2468 im->extra_flags |= NOLEGEND;
2471 im->unitsexponent = atoi(optarg);
2474 im->step = atoi(optarg);
2477 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2478 rrd_set_error( "start time: %s", parsetime_error );
2483 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2484 rrd_set_error( "end time: %s", parsetime_error );
2489 if(strcmp(optarg,"none") == 0){
2495 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2497 &im->xlab_user.gridst,
2499 &im->xlab_user.mgridst,
2501 &im->xlab_user.labst,
2502 &im->xlab_user.precis,
2503 &stroff) == 7 && stroff != 0){
2504 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2505 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2506 rrd_set_error("unknown keyword %s",scan_gtm);
2508 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2509 rrd_set_error("unknown keyword %s",scan_mtm);
2511 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2512 rrd_set_error("unknown keyword %s",scan_ltm);
2515 im->xlab_user.minsec = 1;
2516 im->xlab_user.stst = im->xlab_form;
2518 rrd_set_error("invalid x-grid format");
2524 if(strcmp(optarg,"none") == 0){
2532 &im->ylabfact) == 2) {
2533 if(im->ygridstep<=0){
2534 rrd_set_error("grid step must be > 0");
2536 } else if (im->ylabfact < 1){
2537 rrd_set_error("label factor must be > 0");
2541 rrd_set_error("invalid y-grid format");
2546 strncpy(im->ylegend,optarg,150);
2547 im->ylegend[150]='\0';
2550 im->maxval = atof(optarg);
2553 im->minval = atof(optarg);
2556 im->base = atol(optarg);
2557 if(im->base != 1024 && im->base != 1000 ){
2558 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2563 long_tmp = atol(optarg);
2564 if (long_tmp < 10) {
2565 rrd_set_error("width below 10 pixels");
2568 im->xsize = long_tmp;
2571 long_tmp = atol(optarg);
2572 if (long_tmp < 10) {
2573 rrd_set_error("height below 10 pixels");
2576 im->ysize = long_tmp;
2585 im->imginfo = optarg;
2588 if((im->imgformat = if_conv(optarg)) == -1) {
2589 rrd_set_error("unsupported graphics format '%s'",optarg);
2597 im->logarithmic = 1;
2598 if (isnan(im->minval))
2604 col_nam,&color) == 2){
2606 if((ci=grc_conv(col_nam)) != -1){
2607 im->graph_col[ci]=color;
2609 rrd_set_error("invalid color name '%s'",col_nam);
2612 rrd_set_error("invalid color def format");
2617 /* originally this used char *prop = "" and
2618 ** char *font = "dummy" however this results
2619 ** in a SEG fault, at least on RH7.1
2621 ** The current implementation isn't proper
2622 ** either, font is never freed and prop uses
2623 ** a fixed width string
2632 prop,&size,font) == 3){
2634 if((sindex=text_prop_conv(prop)) != -1){
2635 im->text_prop[sindex].size=size;
2636 im->text_prop[sindex].font=font;
2637 if (sindex==0) { /* the default */
2638 im->text_prop[TEXT_PROP_TITLE].size=size;
2639 im->text_prop[TEXT_PROP_TITLE].font=font;
2640 im->text_prop[TEXT_PROP_AXIS].size=size;
2641 im->text_prop[TEXT_PROP_AXIS].font=font;
2642 im->text_prop[TEXT_PROP_UNIT].size=size;
2643 im->text_prop[TEXT_PROP_UNIT].font=font;
2644 im->text_prop[TEXT_PROP_LEGEND].size=size;
2645 im->text_prop[TEXT_PROP_LEGEND].font=font;
2648 rrd_set_error("invalid fonttag '%s'",prop);
2652 rrd_set_error("invalid text property format");
2658 im->zoom= atof(optarg);
2659 if (im->zoom <= 0.0) {
2660 rrd_set_error("zoom factor must be > 0");
2665 strncpy(im->title,optarg,150);
2666 im->title[150]='\0';
2671 rrd_set_error("unknown option '%c'", optopt);
2673 rrd_set_error("unknown option '%s'",argv[optind-1]);
2678 if (optind >= argc) {
2679 rrd_set_error("missing filename");
2683 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2684 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2688 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2689 /* error string is set in parsetime.c */
2693 if (start_tmp < 3600*24*365*10){
2694 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2698 if (end_tmp < start_tmp) {
2699 rrd_set_error("start (%ld) should be less than end (%ld)",
2700 start_tmp, end_tmp);
2704 im->start = start_tmp;
2709 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2713 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2715 for (i=optind+1;i<argc;i++) {
2720 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2725 /* Each command is one element from *argv[], we call this "line".
2727 ** Each command defines the most current gdes inside struct im.
2728 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2731 gdp=&im->gdes[im->gdes_c-1];
2734 /* function:newvname=string[:ds-name:CF] for xDEF
2735 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2736 ** function:vname#color[:num[:string]] for TICK
2737 ** function:vname-or-num#color[:string] for xRULE,PART
2738 ** function:vname:CF:string for xPRINT
2739 ** function:string for COMMENT
2743 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2745 rrd_set_error("Cannot parse function in line: %s",line);
2749 if(sscanf(funcname,"LINE%lf",&linewidth)){
2750 im->gdes[im->gdes_c-1].gf = GF_LINE;
2751 im->gdes[im->gdes_c-1].linewidth = linewidth;
2753 if ((gdp->gf=gf_conv(funcname))==-1) {
2754 rrd_set_error("'%s' is not a valid function name",funcname);
2760 /* If the error string is set, we exit at the end of the switch */
2763 if (rrd_graph_legend(gdp,&line[argstart])==0)
2764 rrd_set_error("Cannot parse comment in line: %s",line);
2770 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2771 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2773 rrd_set_error("Cannot parse name or num in line: %s",line);
2780 } else if (!rrd_graph_check_vname(im,vname,line)) {
2784 } else break; /* exit due to wrong vname */
2785 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2787 if (strlen(&line[argstart])!=0) {
2788 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2789 rrd_set_error("Cannot parse comment in line: %s",line);
2794 rrd_set_error("STACK must follow another graphing element");
2802 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2804 rrd_set_error("Cannot parse vname in line: %s",line);
2805 else if (rrd_graph_check_vname(im,vname,line))
2806 rrd_set_error("Undefined vname '%s' in line: %s",line);
2808 k=rrd_graph_color(im,&line[argstart],line,1);
2809 if (rrd_test_error()) break;
2810 argstart=argstart+j+k;
2811 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2813 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2816 if (strlen(&line[argstart])!=0)
2817 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2818 rrd_set_error("Cannot parse legend in line: %s",line);
2824 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2826 rrd_set_error("Cannot parse vname in line: '%s'",line);
2830 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2832 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2834 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2835 #define VIDX im->gdes[gdp->vidx]
2837 case -1: /* looks CF but is not really CF */
2838 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2840 case 0: /* CF present and correct */
2841 if (VIDX.gf == GF_VDEF)
2842 rrd_set_error("Don't use CF when printing VDEF");
2845 case 1: /* CF not present */
2846 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2847 else rrd_set_error("Printing DEF or CDEF needs CF");
2850 rrd_set_error("Oops, bug in GPRINT scanning");
2853 if (rrd_test_error()) break;
2855 if (strlen(&line[argstart])!=0) {
2856 if (rrd_graph_legend(gdp,&line[argstart])==0)
2857 rrd_set_error("Cannot parse legend in line: %s",line);
2858 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2859 strcpy(gdp->format, gdp->legend);
2865 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2867 rrd_set_error("Could not parse line: %s",line);
2870 if (find_var(im,gdp->vname)!=-1) {
2871 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2878 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2880 sscanf(&line[argstart],
2881 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2882 gdp->ds_nam, symname, &j, &k);
2883 if ((j==0)||(k!=0)) {
2884 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2887 rrd_graph_check_CF(im,symname,line);
2891 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2893 rrd_set_error("Cannot parse vname in line '%s'",line);
2897 if (rrd_graph_check_vname(im,vname,line)) return;
2898 if ( im->gdes[gdp->vidx].gf != GF_DEF
2899 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2900 rrd_set_error("variable '%s' not DEF nor "
2901 "CDEF in VDEF '%s'", vname,gdp->vname);
2904 vdef_parse(gdp,&line[argstart+strstart]);
2907 if (strstr(&line[argstart],":")!=NULL) {
2908 rrd_set_error("Error in RPN, line: %s",line);
2911 if ((gdp->rpnp = rpn_parse(
2916 rrd_set_error("invalid rpn expression in: %s",line);
2921 default: rrd_set_error("Big oops");
2923 if (rrd_test_error()) {
2930 rrd_set_error("can't make a graph without contents");
2931 im_free(im); /* ??? is this set ??? */
2936 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2938 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2939 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2945 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2948 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2950 color=strstr(var,"#");
2953 rrd_set_error("Found no color in %s",err);
2962 rest=strstr(color,":");
2970 sscanf(color,"#%6x%n",&col,&n);
2971 col = (col << 8) + 0xff /* shift left by 8 */;
2972 if (n!=7) rrd_set_error("Color problem in %s",err);
2975 sscanf(color,"#%8x%n",&col,&n);
2978 rrd_set_error("Color problem in %s",err);
2980 if (rrd_test_error()) return 0;
2986 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
2988 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
2989 rrd_set_error("Unknown CF '%s' in %s",symname,err);
2995 rrd_graph_legend(graph_desc_t *gdp, char *line)
2999 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3001 return (strlen(&line[i])==0);
3005 int bad_format(char *fmt) {
3010 while (*ptr != '\0') {
3011 if (*ptr == '%') {ptr++;
3012 if (*ptr == '\0') return 1;
3013 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3016 if (*ptr == '\0') return 1;
3020 if (*ptr == '\0') return 1;
3021 if (*ptr == 'e' || *ptr == 'f') {
3023 } else { return 1; }
3025 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3034 vdef_parse(gdes,str)
3035 struct graph_desc_t *gdes;
3038 /* A VDEF currently is either "func" or "param,func"
3039 * so the parsing is rather simple. Change if needed.
3046 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3047 if (n==strlen(str)) { /* matched */
3051 sscanf(str,"%29[A-Z]%n",func,&n);
3052 if (n==strlen(str)) { /* matched */
3055 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3062 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3063 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3064 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3065 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3066 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3067 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3068 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3070 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3077 switch (gdes->vf.op) {
3079 if (isnan(param)) { /* no parameter given */
3080 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3086 if (param>=0.0 && param<=100.0) {
3087 gdes->vf.param = param;
3088 gdes->vf.val = DNAN; /* undefined */
3089 gdes->vf.when = 0; /* undefined */
3091 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3105 gdes->vf.param = DNAN;
3106 gdes->vf.val = DNAN;
3109 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3124 graph_desc_t *src,*dst;
3128 dst = &im->gdes[gdi];
3129 src = &im->gdes[dst->vidx];
3130 data = src->data + src->ds;
3131 steps = (src->end - src->start) / src->step;
3134 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3141 switch (dst->vf.op) {
3142 case VDEF_PERCENT: {
3143 rrd_value_t * array;
3147 if ((array = malloc(steps*sizeof(double)))==NULL) {
3148 rrd_set_error("malloc VDEV_PERCENT");
3151 for (step=0;step < steps; step++) {
3152 array[step]=data[step*src->ds_cnt];
3154 qsort(array,step,sizeof(double),vdef_percent_compar);
3156 field = (steps-1)*dst->vf.param/100;
3157 dst->vf.val = array[field];
3158 dst->vf.when = 0; /* no time component */
3160 for(step=0;step<steps;step++)
3161 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3167 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3168 if (step == steps) {
3172 dst->vf.val = data[step*src->ds_cnt];
3173 dst->vf.when = src->start + (step+1)*src->step;
3175 while (step != steps) {
3176 if (finite(data[step*src->ds_cnt])) {
3177 if (data[step*src->ds_cnt] > dst->vf.val) {
3178 dst->vf.val = data[step*src->ds_cnt];
3179 dst->vf.when = src->start + (step+1)*src->step;
3186 case VDEF_AVERAGE: {
3189 for (step=0;step<steps;step++) {
3190 if (finite(data[step*src->ds_cnt])) {
3191 sum += data[step*src->ds_cnt];
3196 if (dst->vf.op == VDEF_TOTAL) {
3197 dst->vf.val = sum*src->step;
3198 dst->vf.when = cnt*src->step; /* not really "when" */
3200 dst->vf.val = sum/cnt;
3201 dst->vf.when = 0; /* no time component */
3211 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3212 if (step == steps) {
3216 dst->vf.val = data[step*src->ds_cnt];
3217 dst->vf.when = src->start + (step+1)*src->step;
3219 while (step != steps) {
3220 if (finite(data[step*src->ds_cnt])) {
3221 if (data[step*src->ds_cnt] < dst->vf.val) {
3222 dst->vf.val = data[step*src->ds_cnt];
3223 dst->vf.when = src->start + (step+1)*src->step;
3230 /* The time value returned here is one step before the
3231 * actual time value. This is the start of the first
3235 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3236 if (step == steps) { /* all entries were NaN */
3240 dst->vf.val = data[step*src->ds_cnt];
3241 dst->vf.when = src->start + step*src->step;
3245 /* The time value returned here is the
3246 * actual time value. This is the end of the last
3250 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3251 if (step < 0) { /* all entries were NaN */
3255 dst->vf.val = data[step*src->ds_cnt];
3256 dst->vf.when = src->start + (step+1)*src->step;
3263 /* NaN < -INF < finite_values < INF */
3265 vdef_percent_compar(a,b)
3268 /* Equality is not returned; this doesn't hurt except
3269 * (maybe) for a little performance.
3272 /* First catch NaN values. They are smallest */
3273 if (isnan( *(double *)a )) return -1;
3274 if (isnan( *(double *)b )) return 1;
3276 /* NaN doesn't reach this part so INF and -INF are extremes.
3277 * The sign from isinf() is compatible with the sign we return
3279 if (isinf( *(double *)a )) return isinf( *(double *)a );
3280 if (isinf( *(double *)b )) return isinf( *(double *)b );
3282 /* If we reach this, both values must be finite */
3283 if ( *(double *)a < *(double *)b ) return -1; else return 1;