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);
1854 int piechart = 0, PieSize, PieCenterX, PieCenterY;
1855 double PieStart=0.0;
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();
1944 /* the actual graph is created by going through the individual
1945 graph elements and then drawing them */
1947 node=gfx_new_area ( canvas,
1951 im->graph_col[GRC_BACK]);
1953 gfx_add_point(node,0, im->ygif);
1955 node=gfx_new_area ( canvas,
1956 im->xorigin, im->yorigin,
1957 im->xorigin + im->xsize, im->yorigin,
1958 im->xorigin + im->xsize, im->yorigin-im->ysize,
1959 im->graph_col[GRC_CANVAS]);
1961 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
1965 node=gfx_arc_sect (canvas,
1966 PieCenterX,PieCenterY,
1967 PieSize*0.6, PieSize*0.6, /* 20% more as background */
1969 im->graph_col[GRC_CANVAS]);
1971 node=gfx_new_area ( canvas,
1972 PieCenterX-0.6*PieSize, PieCenterY-0.6*PieSize,
1973 PieCenterX+0.6*PieSize, PieCenterY-0.6*PieSize,
1974 PieCenterX+0.6*PieSize, PieCenterY+0.6*PieSize,
1975 im->graph_col[GRC_CANVAS]);
1977 PieCenterX-0.6*PieSize, PieCenterY+0.6*PieSize);
1981 if (im->minval > 0.0)
1982 areazero = im->minval;
1983 if (im->maxval < 0.0)
1984 areazero = im->maxval;
1986 axis_paint(im,canvas);
1989 for(i=0;i<im->gdes_c;i++){
1990 switch(im->gdes[i].gf){
2001 for (ii = 0; ii < im->xsize; ii++)
2003 if (!isnan(im->gdes[i].p_data[ii]) &&
2004 im->gdes[i].p_data[ii] > 0.0)
2006 /* generate a tick */
2007 gfx_new_line(canvas, im -> xorigin + ii,
2008 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2012 im -> gdes[i].col );
2018 stack_gf = im->gdes[i].gf;
2020 /* fix data points at oo and -oo */
2021 for(ii=0;ii<im->xsize;ii++){
2022 if (isinf(im->gdes[i].p_data[ii])){
2023 if (im->gdes[i].p_data[ii] > 0) {
2024 im->gdes[i].p_data[ii] = im->maxval ;
2026 im->gdes[i].p_data[ii] = im->minval ;
2032 if (im->gdes[i].col != 0x0){
2033 /* GF_LINE and friend */
2034 if(stack_gf == GF_LINE ){
2036 for(ii=1;ii<im->xsize;ii++){
2037 if ( ! isnan(im->gdes[i].p_data[ii-1])
2038 && ! isnan(im->gdes[i].p_data[ii])){
2040 node = gfx_new_line(canvas,
2041 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2042 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2043 im->gdes[i].linewidth,
2046 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2055 for(ii=1;ii<im->xsize;ii++){
2057 if ( ! isnan(im->gdes[i].p_data[ii-1])
2058 && ! isnan(im->gdes[i].p_data[ii])){
2061 if (im->gdes[i].gf == GF_STACK) {
2062 ybase = ytr(im,lastgdes->p_data[ii-1]);
2064 ybase = ytr(im,areazero);
2067 node = gfx_new_area(canvas,
2068 ii-1+im->xorigin,ybase,
2069 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2070 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2074 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2078 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2079 /* GF_AREA STACK type*/
2080 if (im->gdes[i].gf == GF_STACK ) {
2082 for (iii=ii-1;iii>area_start;iii--){
2083 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2086 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2091 } /* else GF_LINE */
2092 } /* if color != 0x0 */
2093 /* make sure we do not run into trouble when stacking on NaN */
2094 for(ii=0;ii<im->xsize;ii++){
2095 if (isnan(im->gdes[i].p_data[ii])) {
2098 ybase = ytr(im,lastgdes->p_data[ii-1]);
2100 if (isnan(ybase) || !lastgdes ){
2101 ybase = ytr(im,areazero);
2103 im->gdes[i].p_data[ii] = ybase;
2106 lastgdes = &(im->gdes[i]);
2109 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2110 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2112 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2113 node=gfx_arc_sect(canvas,
2114 PieCenterX, PieCenterY,
2115 PieSize/2,PieSize/2,
2116 M_PI*2.0*PieStart/100.0,
2117 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0,
2119 PieStart += im->gdes[i].yrule;
2124 grid_paint(im,canvas);
2126 /* the RULES are the last thing to paint ... */
2127 for(i=0;i<im->gdes_c;i++){
2129 switch(im->gdes[i].gf){
2131 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2132 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2134 if(im->gdes[i].yrule >= im->minval
2135 && im->gdes[i].yrule <= im->maxval)
2136 gfx_new_line(canvas,
2137 im->xorigin,ytr(im,im->gdes[i].yrule),
2138 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2139 1.0,im->gdes[i].col);
2142 if(im->gdes[i].xrule == 0) { /* fetch variable */
2143 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2145 if(im->gdes[i].xrule >= im->start
2146 && im->gdes[i].xrule <= im->end)
2147 gfx_new_line(canvas,
2148 xtr(im,im->gdes[i].xrule),im->yorigin,
2149 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2150 1.0,im->gdes[i].col);
2158 if (strcmp(im->graphfile,"-")==0) {
2160 /* Change translation mode for stdout to BINARY */
2161 _setmode( _fileno( stdout ), O_BINARY );
2165 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2166 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2171 switch (im->imgformat) {
2175 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2178 if (strcmp(im->graphfile,"-") != 0)
2181 gfx_destroy(canvas);
2186 /*****************************************************
2188 *****************************************************/
2191 gdes_alloc(image_desc_t *im){
2193 long def_step = (im->end-im->start)/im->xsize;
2195 if (im->step > def_step) /* step can be increassed ... no decreassed */
2196 def_step = im->step;
2200 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2201 * sizeof(graph_desc_t)))==NULL){
2202 rrd_set_error("realloc graph_descs");
2207 im->gdes[im->gdes_c-1].step=def_step;
2208 im->gdes[im->gdes_c-1].start=im->start;
2209 im->gdes[im->gdes_c-1].end=im->end;
2210 im->gdes[im->gdes_c-1].vname[0]='\0';
2211 im->gdes[im->gdes_c-1].data=NULL;
2212 im->gdes[im->gdes_c-1].ds_namv=NULL;
2213 im->gdes[im->gdes_c-1].data_first=0;
2214 im->gdes[im->gdes_c-1].p_data=NULL;
2215 im->gdes[im->gdes_c-1].rpnp=NULL;
2216 im->gdes[im->gdes_c-1].col = 0x0;
2217 im->gdes[im->gdes_c-1].legend[0]='\0';
2218 im->gdes[im->gdes_c-1].rrd[0]='\0';
2219 im->gdes[im->gdes_c-1].ds=-1;
2220 im->gdes[im->gdes_c-1].p_data=NULL;
2224 /* copies input untill the first unescaped colon is found
2225 or until input ends. backslashes have to be escaped as well */
2227 scan_for_col(char *input, int len, char *output)
2232 input[inp] != ':' &&
2235 if (input[inp] == '\\' &&
2236 input[inp+1] != '\0' &&
2237 (input[inp+1] == '\\' ||
2238 input[inp+1] == ':')){
2239 output[outp++] = input[++inp];
2242 output[outp++] = input[inp];
2245 output[outp] = '\0';
2249 /* Some surgery done on this function, it became ridiculously big.
2251 ** - initializing now in rrd_graph_init()
2252 ** - options parsing now in rrd_graph_options()
2253 ** - script parsing now in rrd_graph_script()
2256 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2260 rrd_graph_init(&im);
2262 rrd_graph_options(argc,argv,&im);
2263 if (rrd_test_error()) return -1;
2265 if (strlen(argv[optind])>=MAXPATH) {
2266 rrd_set_error("filename (including path) too long");
2269 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2270 im.graphfile[MAXPATH-1]='\0';
2272 rrd_graph_script(argc,argv,&im);
2273 if (rrd_test_error()) return -1;
2275 /* Everything is now read and the actual work can start */
2278 if (graph_paint(&im,prdata)==-1){
2283 /* The image is generated and needs to be output.
2284 ** Also, if needed, print a line with information about the image.
2292 /* maybe prdata is not allocated yet ... lets do it now */
2293 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2294 rrd_set_error("malloc imginfo");
2298 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2300 rrd_set_error("malloc imginfo");
2303 filename=im.graphfile+strlen(im.graphfile);
2304 while(filename > im.graphfile) {
2305 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2309 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2316 rrd_graph_init(image_desc_t *im)
2320 im->xlab_user.minsec = -1;
2326 im->ylegend[0] = '\0';
2327 im->title[0] = '\0';
2331 im->unitsexponent= 9999;
2336 im->logarithmic = 0;
2337 im->ygridstep = DNAN;
2338 im->draw_x_grid = 1;
2339 im->draw_y_grid = 1;
2345 im->imgformat = IF_GIF; /* we default to GIF output */
2347 for(i=0;i<DIM(graph_col);i++)
2348 im->graph_col[i]=graph_col[i];
2350 for(i=0;i<DIM(text_prop);i++){
2351 im->text_prop[i].size = text_prop[i].size;
2352 im->text_prop[i].font = text_prop[i].font;
2357 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2360 char *parsetime_error = NULL;
2361 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2362 time_t start_tmp=0,end_tmp=0;
2364 struct time_value start_tv, end_tv;
2367 parsetime("end-24h", &start_tv);
2368 parsetime("now", &end_tv);
2371 static struct option long_options[] =
2373 {"start", required_argument, 0, 's'},
2374 {"end", required_argument, 0, 'e'},
2375 {"x-grid", required_argument, 0, 'x'},
2376 {"y-grid", required_argument, 0, 'y'},
2377 {"vertical-label",required_argument,0,'v'},
2378 {"width", required_argument, 0, 'w'},
2379 {"height", required_argument, 0, 'h'},
2380 {"interlaced", no_argument, 0, 'i'},
2381 {"upper-limit",required_argument, 0, 'u'},
2382 {"lower-limit",required_argument, 0, 'l'},
2383 {"rigid", no_argument, 0, 'r'},
2384 {"base", required_argument, 0, 'b'},
2385 {"logarithmic",no_argument, 0, 'o'},
2386 {"color", required_argument, 0, 'c'},
2387 {"font", required_argument, 0, 'n'},
2388 {"title", required_argument, 0, 't'},
2389 {"imginfo", required_argument, 0, 'f'},
2390 {"imgformat", required_argument, 0, 'a'},
2391 {"lazy", no_argument, 0, 'z'},
2392 {"zoom", required_argument, 0, 'm'},
2393 {"no-legend", no_argument, 0, 'g'},
2394 {"alt-y-grid", no_argument, 0, 257 },
2395 {"alt-autoscale", no_argument, 0, 258 },
2396 {"alt-autoscale-max", no_argument, 0, 259 },
2397 {"units-exponent",required_argument, 0, 260},
2398 {"step", required_argument, 0, 261},
2400 int option_index = 0;
2404 opt = getopt_long(argc, argv,
2405 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2406 long_options, &option_index);
2413 im->extra_flags |= ALTYGRID;
2416 im->extra_flags |= ALTAUTOSCALE;
2419 im->extra_flags |= ALTAUTOSCALE_MAX;
2422 im->extra_flags |= NOLEGEND;
2425 im->unitsexponent = atoi(optarg);
2428 im->step = atoi(optarg);
2431 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2432 rrd_set_error( "start time: %s", parsetime_error );
2437 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2438 rrd_set_error( "end time: %s", parsetime_error );
2443 if(strcmp(optarg,"none") == 0){
2449 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2451 &im->xlab_user.gridst,
2453 &im->xlab_user.mgridst,
2455 &im->xlab_user.labst,
2456 &im->xlab_user.precis,
2457 &stroff) == 7 && stroff != 0){
2458 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2459 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2460 rrd_set_error("unknown keyword %s",scan_gtm);
2462 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2463 rrd_set_error("unknown keyword %s",scan_mtm);
2465 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2466 rrd_set_error("unknown keyword %s",scan_ltm);
2469 im->xlab_user.minsec = 1;
2470 im->xlab_user.stst = im->xlab_form;
2472 rrd_set_error("invalid x-grid format");
2478 if(strcmp(optarg,"none") == 0){
2486 &im->ylabfact) == 2) {
2487 if(im->ygridstep<=0){
2488 rrd_set_error("grid step must be > 0");
2490 } else if (im->ylabfact < 1){
2491 rrd_set_error("label factor must be > 0");
2495 rrd_set_error("invalid y-grid format");
2500 strncpy(im->ylegend,optarg,150);
2501 im->ylegend[150]='\0';
2504 im->maxval = atof(optarg);
2507 im->minval = atof(optarg);
2510 im->base = atol(optarg);
2511 if(im->base != 1024 && im->base != 1000 ){
2512 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2517 long_tmp = atol(optarg);
2518 if (long_tmp < 10) {
2519 rrd_set_error("width below 10 pixels");
2522 im->xsize = long_tmp;
2525 long_tmp = atol(optarg);
2526 if (long_tmp < 10) {
2527 rrd_set_error("height below 10 pixels");
2530 im->ysize = long_tmp;
2539 im->imginfo = optarg;
2542 if((im->imgformat = if_conv(optarg)) == -1) {
2543 rrd_set_error("unsupported graphics format '%s'",optarg);
2551 im->logarithmic = 1;
2552 if (isnan(im->minval))
2558 col_nam,&color) == 2){
2560 if((ci=grc_conv(col_nam)) != -1){
2561 im->graph_col[ci]=color;
2563 rrd_set_error("invalid color name '%s'",col_nam);
2566 rrd_set_error("invalid color def format");
2571 /* originally this used char *prop = "" and
2572 ** char *font = "dummy" however this results
2573 ** in a SEG fault, at least on RH7.1
2575 ** The current implementation isn't proper
2576 ** either, font is never freed and prop uses
2577 ** a fixed width string
2586 prop,&size,font) == 3){
2588 if((sindex=text_prop_conv(prop)) != -1){
2589 im->text_prop[sindex].size=size;
2590 im->text_prop[sindex].font=font;
2591 if (sindex==0) { /* the default */
2592 im->text_prop[TEXT_PROP_TITLE].size=size;
2593 im->text_prop[TEXT_PROP_TITLE].font=font;
2594 im->text_prop[TEXT_PROP_AXIS].size=size;
2595 im->text_prop[TEXT_PROP_AXIS].font=font;
2596 im->text_prop[TEXT_PROP_UNIT].size=size;
2597 im->text_prop[TEXT_PROP_UNIT].font=font;
2598 im->text_prop[TEXT_PROP_LEGEND].size=size;
2599 im->text_prop[TEXT_PROP_LEGEND].font=font;
2602 rrd_set_error("invalid fonttag '%s'",prop);
2606 rrd_set_error("invalid text property format");
2612 im->zoom= atof(optarg);
2613 if (im->zoom <= 0.0) {
2614 rrd_set_error("zoom factor must be > 0");
2619 strncpy(im->title,optarg,150);
2620 im->title[150]='\0';
2625 rrd_set_error("unknown option '%c'", optopt);
2627 rrd_set_error("unknown option '%s'",argv[optind-1]);
2632 if (optind >= argc) {
2633 rrd_set_error("missing filename");
2637 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2638 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2642 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2643 /* error string is set in parsetime.c */
2647 if (start_tmp < 3600*24*365*10){
2648 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2652 if (end_tmp < start_tmp) {
2653 rrd_set_error("start (%ld) should be less than end (%ld)",
2654 start_tmp, end_tmp);
2658 im->start = start_tmp;
2663 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2667 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2669 for (i=optind+1;i<argc;i++) {
2674 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2679 /* Each command is one element from *argv[], we call this "line".
2681 ** Each command defines the most current gdes inside struct im.
2682 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2685 gdp=&im->gdes[im->gdes_c-1];
2688 /* function:newvname=string[:ds-name:CF] for xDEF
2689 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2690 ** function:vname#color[:num[:string]] for TICK
2691 ** function:vname-or-num#color[:string] for xRULE,PART
2692 ** function:vname:CF:string for xPRINT
2693 ** function:string for COMMENT
2697 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2699 rrd_set_error("Cannot parse function in line: %s",line);
2703 if(sscanf(funcname,"LINE%lf",&linewidth)){
2704 im->gdes[im->gdes_c-1].gf = GF_LINE;
2705 im->gdes[im->gdes_c-1].linewidth = linewidth;
2707 if ((gdp->gf=gf_conv(funcname))==-1) {
2708 rrd_set_error("'%s' is not a valid function name",funcname);
2714 /* If the error string is set, we exit at the end of the switch */
2717 if (rrd_graph_legend(gdp,&line[argstart])==0)
2718 rrd_set_error("Cannot parse comment in line: %s",line);
2724 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2725 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2727 rrd_set_error("Cannot parse name or num in line: %s",line);
2734 } else if (!rrd_graph_check_vname(im,vname,line)) {
2738 } else break; /* exit due to wrong vname */
2739 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2741 if (strlen(&line[argstart])!=0) {
2742 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2743 rrd_set_error("Cannot parse comment in line: %s",line);
2748 rrd_set_error("STACK must follow another graphing element");
2756 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2758 rrd_set_error("Cannot parse vname in line: %s",line);
2759 else if (rrd_graph_check_vname(im,vname,line))
2760 rrd_set_error("Undefined vname '%s' in line: %s",line);
2762 k=rrd_graph_color(im,&line[argstart],line,1);
2763 if (rrd_test_error()) break;
2764 argstart=argstart+j+k;
2765 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2767 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2770 if (strlen(&line[argstart])!=0)
2771 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2772 rrd_set_error("Cannot parse legend in line: %s",line);
2778 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2780 rrd_set_error("Cannot parse vname in line: '%s'",line);
2784 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2786 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2788 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2789 #define VIDX im->gdes[gdp->vidx]
2791 case -1: /* looks CF but is not really CF */
2792 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2794 case 0: /* CF present and correct */
2795 if (VIDX.gf == GF_VDEF)
2796 rrd_set_error("Don't use CF when printing VDEF");
2799 case 1: /* CF not present */
2800 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2801 else rrd_set_error("Printing DEF or CDEF needs CF");
2804 rrd_set_error("Oops, bug in GPRINT scanning");
2807 if (rrd_test_error()) break;
2809 if (strlen(&line[argstart])!=0) {
2810 if (rrd_graph_legend(gdp,&line[argstart])==0)
2811 rrd_set_error("Cannot parse legend in line: %s",line);
2812 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2813 strcpy(gdp->format, gdp->legend);
2819 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2821 rrd_set_error("Could not parse line: %s",line);
2824 if (find_var(im,gdp->vname)!=-1) {
2825 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2832 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2834 sscanf(&line[argstart],
2835 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2836 gdp->ds_nam, symname, &j, &k);
2837 if ((j==0)||(k!=0)) {
2838 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2841 rrd_graph_check_CF(im,symname,line);
2845 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2847 rrd_set_error("Cannot parse vname in line '%s'",line);
2851 if (rrd_graph_check_vname(im,vname,line)) return;
2852 if ( im->gdes[gdp->vidx].gf != GF_DEF
2853 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2854 rrd_set_error("variable '%s' not DEF nor "
2855 "CDEF in VDEF '%s'", vname,gdp->vname);
2858 vdef_parse(gdp,&line[argstart+strstart]);
2861 if (strstr(&line[argstart],":")!=NULL) {
2862 rrd_set_error("Error in RPN, line: %s",line);
2865 if ((gdp->rpnp = rpn_parse(
2870 rrd_set_error("invalid rpn expression in: %s",line);
2875 default: rrd_set_error("Big oops");
2877 if (rrd_test_error()) {
2884 rrd_set_error("can't make a graph without contents");
2885 im_free(im); /* ??? is this set ??? */
2890 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2892 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2893 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2899 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2902 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2904 color=strstr(var,"#");
2907 rrd_set_error("Found no color in %s",err);
2916 rest=strstr(color,":");
2924 sscanf(color,"#%6x%n",&col,&n);
2925 col = (col << 8) + 0xff /* shift left by 8 */;
2926 if (n!=7) rrd_set_error("Color problem in %s",err);
2929 sscanf(color,"#%8x%n",&col,&n);
2932 rrd_set_error("Color problem in %s",err);
2934 if (rrd_test_error()) return 0;
2940 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
2942 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
2943 rrd_set_error("Unknown CF '%s' in %s",symname,err);
2949 rrd_graph_legend(graph_desc_t *gdp, char *line)
2953 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
2955 return (strlen(&line[i])==0);
2959 int bad_format(char *fmt) {
2964 while (*ptr != '\0') {
2965 if (*ptr == '%') {ptr++;
2966 if (*ptr == '\0') return 1;
2967 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
2970 if (*ptr == '\0') return 1;
2974 if (*ptr == '\0') return 1;
2975 if (*ptr == 'e' || *ptr == 'f') {
2977 } else { return 1; }
2979 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
2988 vdef_parse(gdes,str)
2989 struct graph_desc_t *gdes;
2992 /* A VDEF currently is either "func" or "param,func"
2993 * so the parsing is rather simple. Change if needed.
3000 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3001 if (n==strlen(str)) { /* matched */
3005 sscanf(str,"%29[A-Z]%n",func,&n);
3006 if (n==strlen(str)) { /* matched */
3009 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3016 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3017 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3018 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3019 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3020 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3021 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3022 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3024 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3031 switch (gdes->vf.op) {
3033 if (isnan(param)) { /* no parameter given */
3034 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3040 if (param>=0.0 && param<=100.0) {
3041 gdes->vf.param = param;
3042 gdes->vf.val = DNAN; /* undefined */
3043 gdes->vf.when = 0; /* undefined */
3045 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3059 gdes->vf.param = DNAN;
3060 gdes->vf.val = DNAN;
3063 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3078 graph_desc_t *src,*dst;
3082 dst = &im->gdes[gdi];
3083 src = &im->gdes[dst->vidx];
3084 data = src->data + src->ds;
3085 steps = (src->end - src->start) / src->step;
3088 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3095 switch (dst->vf.op) {
3096 case VDEF_PERCENT: {
3097 rrd_value_t * array;
3101 if ((array = malloc(steps*sizeof(double)))==NULL) {
3102 rrd_set_error("malloc VDEV_PERCENT");
3105 for (step=0;step < steps; step++) {
3106 array[step]=data[step*src->ds_cnt];
3108 qsort(array,step,sizeof(double),vdef_percent_compar);
3110 field = (steps-1)*dst->vf.param/100;
3111 dst->vf.val = array[field];
3112 dst->vf.when = 0; /* no time component */
3114 for(step=0;step<steps;step++)
3115 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3121 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3122 if (step == steps) {
3126 dst->vf.val = data[step*src->ds_cnt];
3127 dst->vf.when = src->start + (step+1)*src->step;
3129 while (step != steps) {
3130 if (finite(data[step*src->ds_cnt])) {
3131 if (data[step*src->ds_cnt] > dst->vf.val) {
3132 dst->vf.val = data[step*src->ds_cnt];
3133 dst->vf.when = src->start + (step+1)*src->step;
3140 case VDEF_AVERAGE: {
3143 for (step=0;step<steps;step++) {
3144 if (finite(data[step*src->ds_cnt])) {
3145 sum += data[step*src->ds_cnt];
3150 if (dst->vf.op == VDEF_TOTAL) {
3151 dst->vf.val = sum*src->step;
3152 dst->vf.when = cnt*src->step; /* not really "when" */
3154 dst->vf.val = sum/cnt;
3155 dst->vf.when = 0; /* no time component */
3165 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3166 if (step == steps) {
3170 dst->vf.val = data[step*src->ds_cnt];
3171 dst->vf.when = src->start + (step+1)*src->step;
3173 while (step != steps) {
3174 if (finite(data[step*src->ds_cnt])) {
3175 if (data[step*src->ds_cnt] < dst->vf.val) {
3176 dst->vf.val = data[step*src->ds_cnt];
3177 dst->vf.when = src->start + (step+1)*src->step;
3184 /* The time value returned here is one step before the
3185 * actual time value. This is the start of the first
3189 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3190 if (step == steps) { /* all entries were NaN */
3194 dst->vf.val = data[step*src->ds_cnt];
3195 dst->vf.when = src->start + step*src->step;
3199 /* The time value returned here is the
3200 * actual time value. This is the end of the last
3204 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3205 if (step < 0) { /* all entries were NaN */
3209 dst->vf.val = data[step*src->ds_cnt];
3210 dst->vf.when = src->start + (step+1)*src->step;
3217 /* NaN < -INF < finite_values < INF */
3219 vdef_percent_compar(a,b)
3222 /* Equality is not returned; this doesn't hurt except
3223 * (maybe) for a little performance.
3226 /* First catch NaN values. They are smallest */
3227 if (isnan( *(double *)a )) return -1;
3228 if (isnan( *(double *)b )) return 1;
3230 /* NaN doesn't reach this part so INF and -INF are extremes.
3231 * The sign from isinf() is compatible with the sign we return
3233 if (isinf( *(double *)a )) return isinf( *(double *)a );
3234 if (isinf( *(double *)b )) return isinf( *(double *)b );
3236 /* If we reach this, both values must be finite */
3237 if ( *(double *)a < *(double *)b ) return -1; else return 1;