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 /* move the data pointers to the correct period */
820 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
821 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
822 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
823 if(im->gdes[gdi].start > im->gdes[ptr].start) {
824 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
830 if(steparray == NULL){
831 rrd_set_error("rpn expressions without DEF"
832 " or CDEF variables are not supported");
833 rpnstack_free(&rpnstack);
836 steparray[stepcnt]=0;
837 /* Now find the resulting step. All steps in all
838 * used RRAs have to be visited
840 im->gdes[gdi].step = lcd(steparray);
842 if((im->gdes[gdi].data = malloc((
843 (im->gdes[gdi].end-im->gdes[gdi].start)
844 / im->gdes[gdi].step)
845 * sizeof(double)))==NULL){
846 rrd_set_error("malloc im->gdes[gdi].data");
847 rpnstack_free(&rpnstack);
851 /* Step through the new cdef results array and
852 * calculate the values
854 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
855 now<=im->gdes[gdi].end;
856 now += im->gdes[gdi].step)
858 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
860 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
861 * in this case we are advancing by timesteps;
862 * we use the fact that time_t is a synonym for long
864 if (rpn_calc(rpnp,&rpnstack,(long) now,
865 im->gdes[gdi].data,++dataidx) == -1) {
866 /* rpn_calc sets the error string */
867 rpnstack_free(&rpnstack);
870 } /* enumerate over time steps within a CDEF */
875 } /* enumerate over CDEFs */
876 rpnstack_free(&rpnstack);
880 /* massage data so, that we get one value for each x coordinate in the graph */
882 data_proc( image_desc_t *im ){
884 double pixstep = (double)(im->end-im->start)
885 /(double)im->xsize; /* how much time
886 passes in one pixel */
888 double minval=DNAN,maxval=DNAN;
890 unsigned long gr_time;
892 /* memory for the processed data */
893 for(i=0;i<im->gdes_c;i++){
894 if((im->gdes[i].gf==GF_LINE) ||
895 (im->gdes[i].gf==GF_AREA) ||
896 (im->gdes[i].gf==GF_TICK) ||
897 (im->gdes[i].gf==GF_STACK)){
898 if((im->gdes[i].p_data = malloc((im->xsize +1)
899 * sizeof(rrd_value_t)))==NULL){
900 rrd_set_error("malloc data_proc");
906 for(i=0;i<im->xsize;i++){
908 gr_time = im->start+pixstep*i; /* time of the
912 for(ii=0;ii<im->gdes_c;ii++){
914 switch(im->gdes[ii].gf){
920 vidx = im->gdes[ii].vidx;
924 ((unsigned long)floor(
925 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
927 ) *im->gdes[vidx].ds_cnt
930 if (! isnan(value)) {
932 im->gdes[ii].p_data[i] = paintval;
933 /* GF_TICK: the data values are not relevant for min and max */
934 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
935 if (isnan(minval) || paintval < minval)
937 if (isnan(maxval) || paintval > maxval)
941 im->gdes[ii].p_data[i] = DNAN;
958 /* if min or max have not been asigned a value this is because
959 there was no data in the graph ... this is not good ...
960 lets set these to dummy values then ... */
962 if (isnan(minval)) minval = 0.0;
963 if (isnan(maxval)) maxval = 1.0;
965 /* adjust min and max values */
966 if (isnan(im->minval)
967 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
968 && im->minval > minval))
970 if (isnan(im->maxval)
972 && im->maxval < maxval)){
974 im->maxval = maxval * 1.1;
978 /* make sure min and max are not equal */
979 if (im->minval == im->maxval) {
981 if (! im->logarithmic) {
985 /* make sure min and max are not both zero */
986 if (im->maxval == 0.0) {
996 /* identify the point where the first gridline, label ... gets placed */
1000 time_t start, /* what is the initial time */
1001 enum tmt_en baseint, /* what is the basic interval */
1002 long basestep /* how many if these do we jump a time */
1006 tm = *localtime(&start);
1009 tm.tm_sec -= tm.tm_sec % basestep; break;
1012 tm.tm_min -= tm.tm_min % basestep;
1017 tm.tm_hour -= tm.tm_hour % basestep; break;
1019 /* we do NOT look at the basestep for this ... */
1022 tm.tm_hour = 0; break;
1024 /* we do NOT look at the basestep for this ... */
1028 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1029 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1036 tm.tm_mon -= tm.tm_mon % basestep; break;
1044 tm.tm_year -= (tm.tm_year+1900) % basestep;
1049 /* identify the point where the next gridline, label ... gets placed */
1052 time_t current, /* what is the initial time */
1053 enum tmt_en baseint, /* what is the basic interval */
1054 long basestep /* how many if these do we jump a time */
1059 tm = *localtime(¤t);
1063 tm.tm_sec += basestep; break;
1065 tm.tm_min += basestep; break;
1067 tm.tm_hour += basestep; break;
1069 tm.tm_mday += basestep; break;
1071 tm.tm_mday += 7*basestep; break;
1073 tm.tm_mon += basestep; break;
1075 tm.tm_year += basestep;
1077 madetime = mktime(&tm);
1078 } while (madetime == -1); /* this is necessary to skip impssible times
1079 like the daylight saving time skips */
1085 /* calculate values required for PRINT and GPRINT functions */
1088 print_calc(image_desc_t *im, char ***prdata)
1090 long i,ii,validsteps;
1093 int graphelement = 0;
1096 double magfact = -1;
1100 if (im->imginfo) prlines++;
1101 for(i=0;i<im->gdes_c;i++){
1102 switch(im->gdes[i].gf){
1105 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1106 rrd_set_error("realloc prdata");
1110 /* PRINT and GPRINT can now print VDEF generated values.
1111 * There's no need to do any calculations on them as these
1112 * calculations were already made.
1114 vidx = im->gdes[i].vidx;
1115 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1116 printval = im->gdes[vidx].vf.val;
1117 printtime = im->gdes[vidx].vf.when;
1118 } else { /* need to calculate max,min,avg etcetera */
1119 max_ii =((im->gdes[vidx].end
1120 - im->gdes[vidx].start)
1121 / im->gdes[vidx].step
1122 * im->gdes[vidx].ds_cnt);
1125 for( ii=im->gdes[vidx].ds;
1127 ii+=im->gdes[vidx].ds_cnt){
1128 if (! finite(im->gdes[vidx].data[ii]))
1130 if (isnan(printval)){
1131 printval = im->gdes[vidx].data[ii];
1136 switch (im->gdes[i].cf){
1139 case CF_DEVSEASONAL:
1143 printval += im->gdes[vidx].data[ii];
1146 printval = min( printval, im->gdes[vidx].data[ii]);
1150 printval = max( printval, im->gdes[vidx].data[ii]);
1153 printval = im->gdes[vidx].data[ii];
1156 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1157 if (validsteps > 1) {
1158 printval = (printval / validsteps);
1161 } /* prepare printval */
1163 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1164 if (im->gdes[i].gf == GF_PRINT){
1165 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1166 sprintf((*prdata)[prlines-2],"%s (%lu)",
1167 ctime(&printtime),printtime);
1168 (*prdata)[prlines-1] = NULL;
1170 sprintf(im->gdes[i].legend,"%s (%lu)",
1171 ctime(&printtime),printtime);
1175 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1176 /* Magfact is set to -1 upon entry to print_calc. If it
1177 * is still less than 0, then we need to run auto_scale.
1178 * Otherwise, put the value into the correct units. If
1179 * the value is 0, then do not set the symbol or magnification
1180 * so next the calculation will be performed again. */
1181 if (magfact < 0.0) {
1182 auto_scale(im,&printval,&si_symb,&magfact);
1183 if (printval == 0.0)
1186 printval /= magfact;
1188 *(++percent_s) = 's';
1189 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1190 auto_scale(im,&printval,&si_symb,&magfact);
1193 if (im->gdes[i].gf == GF_PRINT){
1194 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1195 if (bad_format(im->gdes[i].format)) {
1196 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1199 #ifdef HAVE_SNPRINTF
1200 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1202 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1204 (*prdata)[prlines-1] = NULL;
1208 if (bad_format(im->gdes[i].format)) {
1209 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1212 #ifdef HAVE_SNPRINTF
1213 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1215 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1237 return graphelement;
1241 /* place legends with color spots */
1243 leg_place(image_desc_t *im)
1246 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1247 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1248 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1249 int fill=0, fill_last;
1251 int leg_x = border, leg_y = im->ygif;
1255 char prt_fctn; /*special printfunctions */
1258 if( !(im->extra_flags & NOLEGEND) ) {
1259 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1260 rrd_set_error("malloc for legspace");
1264 for(i=0;i<im->gdes_c;i++){
1267 leg_cc = strlen(im->gdes[i].legend);
1269 /* is there a controle code ant the end of the legend string ? */
1270 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1271 prt_fctn = im->gdes[i].legend[leg_cc-1];
1273 im->gdes[i].legend[leg_cc] = '\0';
1277 /* remove exess space */
1278 while (prt_fctn=='g' &&
1280 im->gdes[i].legend[leg_cc-1]==' '){
1282 im->gdes[i].legend[leg_cc]='\0';
1285 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1288 /* no interleg space if string ends in \g */
1289 fill += legspace[i];
1291 if (im->gdes[i].gf != GF_GPRINT &&
1292 im->gdes[i].gf != GF_COMMENT) {
1295 fill += gfx_get_text_width(fill+border,im->text_prop[TEXT_PROP_LEGEND].font,
1296 im->text_prop[TEXT_PROP_LEGEND].size,
1298 im->gdes[i].legend);
1303 /* who said there was a special tag ... ?*/
1304 if (prt_fctn=='g') {
1307 if (prt_fctn == '\0') {
1308 if (i == im->gdes_c -1 ) prt_fctn ='l';
1310 /* is it time to place the legends ? */
1311 if (fill > im->xgif - 2*border){
1326 if (prt_fctn != '\0'){
1328 if (leg_c >= 2 && prt_fctn == 'j') {
1329 glue = (im->xgif - fill - 2* border) / (leg_c-1);
1333 if (prt_fctn =='c') leg_x = (im->xgif - fill) / 2.0;
1334 if (prt_fctn =='r') leg_x = im->xgif - fill - border;
1336 for(ii=mark;ii<=i;ii++){
1337 if(im->gdes[ii].legend[0]=='\0')
1339 im->gdes[ii].leg_x = leg_x;
1340 im->gdes[ii].leg_y = leg_y;
1342 gfx_get_text_width(leg_x,im->text_prop[TEXT_PROP_LEGEND].font,
1343 im->text_prop[TEXT_PROP_LEGEND].size,
1345 im->gdes[ii].legend)
1348 if (im->gdes[ii].gf != GF_GPRINT &&
1349 im->gdes[ii].gf != GF_COMMENT)
1352 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1353 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1365 /* create a grid on the graph. it determines what to do
1366 from the values of xsize, start and end */
1368 /* the xaxis labels are determined from the number of seconds per pixel
1369 in the requested graph */
1374 horizontal_grid(gfx_canvas_t *canvas, image_desc_t *im)
1382 char graph_label[100];
1384 int labfact,gridind;
1385 int decimals, fractionals;
1390 range = im->maxval - im->minval;
1391 scaledrange = range / im->magfact;
1393 /* does the scale of this graph make it impossible to put lines
1394 on it? If so, give up. */
1395 if (isnan(scaledrange)) {
1399 /* find grid spaceing */
1401 if(isnan(im->ygridstep)){
1402 if(im->extra_flags & ALTYGRID) {
1403 /* find the value with max number of digits. Get number of digits */
1404 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1405 if(decimals <= 0) /* everything is small. make place for zero */
1408 fractionals = floor(log10(range));
1409 if(fractionals < 0) /* small amplitude. */
1410 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1412 sprintf(labfmt, "%%%d.1f", decimals + 1);
1413 gridstep = pow((double)10, (double)fractionals);
1414 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1416 /* should have at least 5 lines but no more then 15 */
1417 if(range/gridstep < 5)
1419 if(range/gridstep > 15)
1421 if(range/gridstep > 5) {
1423 if(range/gridstep > 8)
1432 for(i=0;ylab[i].grid > 0;i++){
1433 pixel = im->ysize / (scaledrange / ylab[i].grid);
1434 if (gridind == -1 && pixel > 5) {
1441 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1442 labfact = ylab[gridind].lfac[i];
1447 gridstep = ylab[gridind].grid * im->magfact;
1450 gridstep = im->ygridstep;
1451 labfact = im->ylabfact;
1455 x1=im->xorigin+im->xsize;
1457 sgrid = (int)( im->minval / gridstep - 1);
1458 egrid = (int)( im->maxval / gridstep + 1);
1459 scaledstep = gridstep/im->magfact;
1460 for (i = sgrid; i <= egrid; i++){
1461 y0=ytr(im,gridstep*i);
1462 if ( y0 >= im->yorigin-im->ysize
1463 && y0 <= im->yorigin){
1464 if(i % labfact == 0){
1465 if (i==0 || im->symbol == ' ') {
1467 if(im->extra_flags & ALTYGRID) {
1468 sprintf(graph_label,labfmt,scaledstep*i);
1471 sprintf(graph_label,"%4.1f",scaledstep*i);
1474 sprintf(graph_label,"%4.0f",scaledstep*i);
1478 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1480 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1484 gfx_new_text ( canvas,
1485 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1486 im->graph_col[GRC_FONT],
1487 im->text_prop[TEXT_PROP_AXIS].font,
1488 im->text_prop[TEXT_PROP_AXIS].size,
1489 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1491 gfx_new_line ( canvas,
1494 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1497 gfx_new_line ( canvas,
1500 GRIDWIDTH, im->graph_col[GRC_GRID] );
1508 /* logaritmic horizontal grid */
1510 horizontal_log_grid(gfx_canvas_t *canvas, image_desc_t *im)
1514 int minoridx=0, majoridx=0;
1515 char graph_label[100];
1517 double value, pixperstep, minstep;
1519 /* find grid spaceing */
1520 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1522 if (isnan(pixpex)) {
1526 for(i=0;yloglab[i][0] > 0;i++){
1527 minstep = log10(yloglab[i][0]);
1528 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1529 if(yloglab[i][ii+2]==0){
1530 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1534 pixperstep = pixpex * minstep;
1535 if(pixperstep > 5){minoridx = i;}
1536 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1540 x1=im->xorigin+im->xsize;
1541 /* paint minor grid */
1542 for (value = pow((double)10, log10(im->minval)
1543 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1544 value <= im->maxval;
1545 value *= yloglab[minoridx][0]){
1546 if (value < im->minval) continue;
1548 while(yloglab[minoridx][++i] > 0){
1549 y0 = ytr(im,value * yloglab[minoridx][i]);
1550 if (y0 <= im->yorigin - im->ysize) break;
1551 gfx_new_line ( canvas,
1554 GRIDWIDTH, im->graph_col[GRC_GRID] );
1558 /* paint major grid and labels*/
1559 for (value = pow((double)10, log10(im->minval)
1560 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1561 value <= im->maxval;
1562 value *= yloglab[majoridx][0]){
1563 if (value < im->minval) continue;
1565 while(yloglab[majoridx][++i] > 0){
1566 y0 = ytr(im,value * yloglab[majoridx][i]);
1567 if (y0 <= im->yorigin - im->ysize) break;
1568 gfx_new_line ( canvas,
1571 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1573 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1574 gfx_new_text ( canvas,
1575 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1576 im->graph_col[GRC_FONT],
1577 im->text_prop[TEXT_PROP_AXIS].font,
1578 im->text_prop[TEXT_PROP_AXIS].size,
1579 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1589 gfx_canvas_t *canvas,
1592 int xlab_sel; /* which sort of label and grid ? */
1595 char graph_label[100];
1596 double x0,y0,y1; /* points for filled graph and more*/
1599 /* the type of time grid is determined by finding
1600 the number of seconds per pixel in the graph */
1603 if(im->xlab_user.minsec == -1){
1604 factor=(im->end - im->start)/im->xsize;
1606 while ( xlab[xlab_sel+1].minsec != -1
1607 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1608 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1609 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1610 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1611 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1612 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1613 im->xlab_user.labst = xlab[xlab_sel].labst;
1614 im->xlab_user.precis = xlab[xlab_sel].precis;
1615 im->xlab_user.stst = xlab[xlab_sel].stst;
1618 /* y coords are the same for every line ... */
1620 y1 = im->yorigin-im->ysize;
1623 /* paint the minor grid */
1624 for(ti = find_first_time(im->start,
1625 im->xlab_user.gridtm,
1626 im->xlab_user.gridst);
1628 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1630 /* are we inside the graph ? */
1631 if (ti < im->start || ti > im->end) continue;
1633 gfx_new_line(canvas,x0,y0+1, x0,y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1637 /* paint the major grid */
1638 for(ti = find_first_time(im->start,
1639 im->xlab_user.mgridtm,
1640 im->xlab_user.mgridst);
1642 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1644 /* are we inside the graph ? */
1645 if (ti < im->start || ti > im->end) continue;
1647 gfx_new_line(canvas,x0,y0+2, x0,y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1650 /* paint the labels below the graph */
1651 for(ti = find_first_time(im->start,
1652 im->xlab_user.labtm,
1653 im->xlab_user.labst);
1655 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1657 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1660 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1662 # error "your libc has no strftime I guess we'll abort the exercise here."
1664 gfx_new_text ( canvas,
1665 xtr(im,tilab), y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1666 im->graph_col[GRC_FONT],
1667 im->text_prop[TEXT_PROP_AXIS].font,
1668 im->text_prop[TEXT_PROP_AXIS].size,
1669 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1680 gfx_canvas_t *canvas
1683 /* draw x and y axis */
1684 gfx_new_line ( canvas, im->xorigin+im->xsize,im->yorigin,
1685 im->xorigin+im->xsize,im->yorigin-im->ysize,
1686 GRIDWIDTH, im->graph_col[GRC_GRID]);
1688 gfx_new_line ( canvas, im->xorigin,im->yorigin-im->ysize,
1689 im->xorigin+im->xsize,im->yorigin-im->ysize,
1690 GRIDWIDTH, im->graph_col[GRC_GRID]);
1692 gfx_new_line ( canvas, im->xorigin-4,im->yorigin,
1693 im->xorigin+im->xsize+4,im->yorigin,
1694 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1696 gfx_new_line ( canvas, im->xorigin,im->yorigin+4,
1697 im->xorigin,im->yorigin-im->ysize-4,
1698 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1701 /* arrow for X axis direction */
1702 gfx_new_area ( canvas,
1703 im->xorigin+im->xsize+4, im->yorigin-3,
1704 im->xorigin+im->xsize+4, im->yorigin+3,
1705 im->xorigin+im->xsize+9, im->yorigin,
1706 im->graph_col[GRC_ARROW]);
1715 gfx_canvas_t *canvas
1722 double x0,x1,x2,x3,y0,y1,y2,y3; /* points for filled graph and more*/
1726 /* draw 3d border */
1727 node = gfx_new_area (canvas, 0,im->ygif,
1729 2,2,im->graph_col[GRC_SHADEA]);
1730 gfx_add_point( node , im->xgif - 2, 2 );
1731 gfx_add_point( node , im->xgif, 0 );
1732 gfx_add_point( node , 0,0 );
1733 /* gfx_add_point( node , 0,im->ygif ); */
1735 node = gfx_new_area (canvas, 2,im->ygif-2,
1736 im->xgif-2,im->ygif-2,
1738 im->graph_col[GRC_SHADEB]);
1739 gfx_add_point( node , im->xgif,0);
1740 gfx_add_point( node , im->xgif,im->ygif);
1741 gfx_add_point( node , 0,im->ygif);
1742 /* gfx_add_point( node , 0,im->ygif ); */
1745 if (im->draw_x_grid == 1 )
1746 vertical_grid(canvas, im);
1748 if (im->draw_y_grid == 1){
1749 if(im->logarithmic){
1750 res = horizontal_log_grid(canvas,im);
1752 res = horizontal_grid(canvas,im);
1755 /* dont draw horizontal grid if there is no min and max val */
1757 char *nodata = "No Data found";
1758 gfx_new_text(canvas,im->xgif/2, (2*im->yorigin-im->ysize) / 2,
1759 im->graph_col[GRC_FONT],
1760 im->text_prop[TEXT_PROP_AXIS].font,
1761 im->text_prop[TEXT_PROP_AXIS].size,
1762 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1767 /* yaxis description */
1768 gfx_new_text( canvas,
1769 7, (im->yorigin - im->ysize/2),
1770 im->graph_col[GRC_FONT],
1771 im->text_prop[TEXT_PROP_AXIS].font,
1772 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1773 GFX_H_CENTER, GFX_V_CENTER,
1777 gfx_new_text( canvas,
1778 im->xgif/2, im->text_prop[TEXT_PROP_TITLE].size*1.5,
1779 im->graph_col[GRC_FONT],
1780 im->text_prop[TEXT_PROP_TITLE].font,
1781 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1782 GFX_H_CENTER, GFX_V_CENTER,
1786 if( !(im->extra_flags & NOLEGEND) ) {
1787 for(i=0;i<im->gdes_c;i++){
1788 if(im->gdes[i].legend[0] =='\0')
1791 if(im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT){
1792 x0 = im->gdes[i].leg_x;
1793 y0 = im->gdes[i].leg_y+1.0;
1800 node = gfx_new_area(canvas, x0,y0,x1,y1,x2,y2 ,im->gdes[i].col);
1801 gfx_add_point ( node, x3, y3 );
1802 /* gfx_add_point ( node, x0, y0 ); */
1803 node = gfx_new_line(canvas, x0,y0,x1,y1 ,GRIDWIDTH, im->graph_col[GRC_FRAME]);
1804 gfx_add_point ( node, x2, y2 );
1805 gfx_add_point ( node, x3, y3 );
1806 gfx_add_point ( node, x0, y0 );
1808 gfx_new_text ( canvas, x0+boxH+6, (y0+y2) / 2.0,
1809 im->graph_col[GRC_FONT],
1810 im->text_prop[TEXT_PROP_AXIS].font,
1811 im->text_prop[TEXT_PROP_AXIS].size,
1812 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
1813 im->gdes[i].legend );
1816 x0 = im->gdes[i].leg_x;
1817 y0 = im->gdes[i].leg_y;
1819 gfx_new_text ( canvas, x0, (y0+y2) / 2.0,
1820 im->graph_col[GRC_FONT],
1821 im->text_prop[TEXT_PROP_AXIS].font,
1822 im->text_prop[TEXT_PROP_AXIS].size,
1823 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1824 im->gdes[i].legend );
1832 /*****************************************************
1833 * lazy check make sure we rely need to create this graph
1834 *****************************************************/
1836 int lazy_check(image_desc_t *im){
1839 struct stat gifstat;
1841 if (im->lazy == 0) return 0; /* no lazy option */
1842 if (stat(im->graphfile,&gifstat) != 0)
1843 return 0; /* can't stat */
1844 /* one pixel in the existing graph is more then what we would
1846 if (time(NULL) - gifstat.st_mtime >
1847 (im->end - im->start) / im->xsize)
1849 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1850 return 0; /* the file does not exist */
1851 switch (im->imgformat) {
1853 size = GifSize(fd,&(im->xgif),&(im->ygif));
1856 size = PngSize(fd,&(im->xgif),&(im->ygif));
1864 pie_part(gfx_canvas_t *canvas, gfx_color_t color,
1865 double PieCenterX, double PieCenterY, double Radius,
1866 double startangle, double endangle)
1870 double step=M_PI/50; /* Number of iterations for the circle;
1871 ** 10 is definitely too low, more than
1872 ** 50 seems to be overkill
1875 /* Strange but true: we have to work clockwise or else
1876 ** anti aliasing nor transparency don't work.
1878 ** This test is here to make sure we do it right, also
1879 ** this makes the for...next loop more easy to implement.
1880 ** The return will occur if the user enters a negative number
1881 ** (which shouldn't be done according to the specs) or if the
1882 ** programmers do something wrong (which, as we all know, never
1883 ** happens anyway :)
1885 if (endangle<startangle) return;
1887 /* Hidden feature: Radius decreases each full circle */
1889 while (angle>=2*M_PI) {
1894 node=gfx_new_area(canvas,
1895 PieCenterX+sin(startangle)*Radius,
1896 PieCenterY-cos(startangle)*Radius,
1899 PieCenterX+sin(endangle)*Radius,
1900 PieCenterY-cos(endangle)*Radius,
1902 for (angle=endangle;angle-startangle>=step;angle-=step) {
1904 PieCenterX+sin(angle)*Radius,
1905 PieCenterY-cos(angle)*Radius );
1909 /* draw that picture thing ... */
1911 graph_paint(image_desc_t *im, char ***calcpr)
1914 int lazy = lazy_check(im);
1916 double PieStart=0.0, PieSize=0.0, PieCenterX=0.0, PieCenterY=0.0;
1918 gfx_canvas_t *canvas;
1921 double areazero = 0.0;
1922 enum gf_en stack_gf = GF_PRINT;
1923 graph_desc_t *lastgdes = NULL;
1925 /* if we are lazy and there is nothing to PRINT ... quit now */
1926 if (lazy && im->prt_c==0) return 0;
1928 /* pull the data from the rrd files ... */
1930 if(data_fetch(im)==-1)
1933 /* evaluate VDEF and CDEF operations ... */
1934 if(data_calc(im)==-1)
1937 /* calculate and PRINT and GPRINT definitions. We have to do it at
1938 * this point because it will affect the length of the legends
1939 * if there are no graph elements we stop here ...
1940 * if we are lazy, try to quit ...
1942 i=print_calc(im,calcpr);
1944 if(i==0 || lazy) return 0;
1946 /* get actual drawing data and find min and max values*/
1947 if(data_proc(im)==-1)
1950 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
1952 if(!im->rigid && ! im->logarithmic)
1953 expand_range(im); /* make sure the upper and lower limit are
1956 /* init xtr and ytr */
1957 /* determine the actual size of the gif to draw. The size given
1958 on the cmdline is the graph area. But we need more as we have
1959 draw labels and other things outside the graph area */
1962 im->xorigin = 10 + 9 * im->text_prop[TEXT_PROP_LEGEND].size;
1966 im->yorigin = 10 + im->ysize;
1970 if(im->title[0] != '\0')
1971 im->yorigin += im->text_prop[TEXT_PROP_TITLE].size*3+4;
1973 im->xgif= 20 +im->xsize + im->xorigin;
1974 im->ygif= im->yorigin+2* im->text_prop[TEXT_PROP_LEGEND].size;
1976 /* check if we need to draw a piechart */
1977 for(i=0;i<im->gdes_c;i++){
1978 if (im->gdes[i].gf == GF_PART) {
1985 /* allocate enough space for the piechart itself (PieSize), 20%
1986 ** more for the background and an additional 50 pixels spacing.
1988 if (im->xsize < im->ysize)
1989 PieSize = im->xsize;
1991 PieSize = im->ysize;
1992 im->xgif += PieSize*1.2 + 50;
1994 PieCenterX = im->xorigin + im->xsize + 50 + PieSize*0.6;
1995 PieCenterY = im->yorigin - PieSize*0.5;
1998 /* determine where to place the legends onto the graphics.
1999 and set im->ygif to match space requirements for text */
2000 if(leg_place(im)==-1)
2003 canvas=gfx_new_canvas();
2006 /* the actual graph is created by going through the individual
2007 graph elements and then drawing them */
2009 node=gfx_new_area ( canvas,
2013 im->graph_col[GRC_BACK]);
2015 gfx_add_point(node,0, im->ygif);
2017 node=gfx_new_area ( canvas,
2018 im->xorigin, im->yorigin,
2019 im->xorigin + im->xsize, im->yorigin,
2020 im->xorigin + im->xsize, im->yorigin-im->ysize,
2021 im->graph_col[GRC_CANVAS]);
2023 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2026 /******************************************************************
2027 ** Just to play around. If you see this, I forgot to remove it **
2028 ******************************************************************/
2030 node=gfx_new_area(canvas,
2032 im->xgif, im->ygif-100,
2034 im->graph_col[GRC_CANVAS]);
2035 gfx_add_point(node,0,im->ygif);
2038 ** top left: current way, solid color
2039 ** top right: proper way, solid color
2040 ** bottom left: current way, alpha=0x80, partially overlapping
2041 ** bottom right: proper way, alpha=0x80, partially overlapping
2044 double x,y,x1,y1,x2,y2,x3,y3,x4,y4;
2048 x1= 20; y1=im->ygif-100+20;
2049 x2=3*x+20; y2=im->ygif-100+20;
2050 x3= x+20; y3=im->ygif-100+20+2*y;
2051 x4=4*x+20; y4=im->ygif-100+20+2*y;
2053 node=gfx_new_area(canvas,
2058 gfx_add_point(node,x1,y1+3*y);
2059 node=gfx_new_area(canvas,
2064 gfx_add_point(node,x2+3*x,y2);
2065 node=gfx_new_area(canvas,
2070 gfx_add_point(node,x3,y3+3*y);
2071 node=gfx_new_area(canvas,
2076 gfx_add_point(node,x4+2*x,y4);
2082 pie_part(canvas,im->graph_col[GRC_CANVAS],PieCenterX,PieCenterY,PieSize*0.6,0,2*M_PI);
2085 if (im->minval > 0.0)
2086 areazero = im->minval;
2087 if (im->maxval < 0.0)
2088 areazero = im->maxval;
2090 axis_paint(im,canvas);
2093 for(i=0;i<im->gdes_c;i++){
2094 switch(im->gdes[i].gf){
2105 for (ii = 0; ii < im->xsize; ii++)
2107 if (!isnan(im->gdes[i].p_data[ii]) &&
2108 im->gdes[i].p_data[ii] > 0.0)
2110 /* generate a tick */
2111 gfx_new_line(canvas, im -> xorigin + ii,
2112 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2116 im -> gdes[i].col );
2122 stack_gf = im->gdes[i].gf;
2124 /* fix data points at oo and -oo */
2125 for(ii=0;ii<im->xsize;ii++){
2126 if (isinf(im->gdes[i].p_data[ii])){
2127 if (im->gdes[i].p_data[ii] > 0) {
2128 im->gdes[i].p_data[ii] = im->maxval ;
2130 im->gdes[i].p_data[ii] = im->minval ;
2136 if (im->gdes[i].col != 0x0){
2137 /* GF_LINE and friend */
2138 if(stack_gf == GF_LINE ){
2140 for(ii=1;ii<im->xsize;ii++){
2141 if ( ! isnan(im->gdes[i].p_data[ii-1])
2142 && ! isnan(im->gdes[i].p_data[ii])){
2144 node = gfx_new_line(canvas,
2145 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2146 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2147 im->gdes[i].linewidth,
2150 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2159 for(ii=1;ii<im->xsize;ii++){
2161 if ( ! isnan(im->gdes[i].p_data[ii-1])
2162 && ! isnan(im->gdes[i].p_data[ii])){
2165 if (im->gdes[i].gf == GF_STACK) {
2166 ybase = ytr(im,lastgdes->p_data[ii-1]);
2168 ybase = ytr(im,areazero);
2171 node = gfx_new_area(canvas,
2172 ii-1+im->xorigin,ybase,
2173 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2174 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2178 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2182 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2183 /* GF_AREA STACK type*/
2184 if (im->gdes[i].gf == GF_STACK ) {
2186 for (iii=ii-1;iii>area_start;iii--){
2187 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2190 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2195 } /* else GF_LINE */
2196 } /* if color != 0x0 */
2197 /* make sure we do not run into trouble when stacking on NaN */
2198 for(ii=0;ii<im->xsize;ii++){
2199 if (isnan(im->gdes[i].p_data[ii])) {
2202 ybase = ytr(im,lastgdes->p_data[ii-1]);
2204 if (isnan(ybase) || !lastgdes ){
2205 ybase = ytr(im,areazero);
2207 im->gdes[i].p_data[ii] = ybase;
2210 lastgdes = &(im->gdes[i]);
2213 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2214 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2216 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2217 pie_part(canvas,im->gdes[i].col,
2218 PieCenterX,PieCenterY,PieSize/2,
2219 M_PI*2.0*PieStart/100.0,
2220 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2221 PieStart += im->gdes[i].yrule;
2226 grid_paint(im,canvas);
2228 /* the RULES are the last thing to paint ... */
2229 for(i=0;i<im->gdes_c;i++){
2231 switch(im->gdes[i].gf){
2233 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2234 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2236 if(im->gdes[i].yrule >= im->minval
2237 && im->gdes[i].yrule <= im->maxval)
2238 gfx_new_line(canvas,
2239 im->xorigin,ytr(im,im->gdes[i].yrule),
2240 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2241 1.0,im->gdes[i].col);
2244 if(im->gdes[i].xrule == 0) { /* fetch variable */
2245 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2247 if(im->gdes[i].xrule >= im->start
2248 && im->gdes[i].xrule <= im->end)
2249 gfx_new_line(canvas,
2250 xtr(im,im->gdes[i].xrule),im->yorigin,
2251 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2252 1.0,im->gdes[i].col);
2260 if (strcmp(im->graphfile,"-")==0) {
2262 /* Change translation mode for stdout to BINARY */
2263 _setmode( _fileno( stdout ), O_BINARY );
2267 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2268 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2273 switch (im->imgformat) {
2277 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2280 if (strcmp(im->graphfile,"-") != 0)
2283 gfx_destroy(canvas);
2288 /*****************************************************
2290 *****************************************************/
2293 gdes_alloc(image_desc_t *im){
2295 long def_step = (im->end-im->start)/im->xsize;
2297 if (im->step > def_step) /* step can be increassed ... no decreassed */
2298 def_step = im->step;
2302 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2303 * sizeof(graph_desc_t)))==NULL){
2304 rrd_set_error("realloc graph_descs");
2309 im->gdes[im->gdes_c-1].step=def_step;
2310 im->gdes[im->gdes_c-1].start=im->start;
2311 im->gdes[im->gdes_c-1].end=im->end;
2312 im->gdes[im->gdes_c-1].vname[0]='\0';
2313 im->gdes[im->gdes_c-1].data=NULL;
2314 im->gdes[im->gdes_c-1].ds_namv=NULL;
2315 im->gdes[im->gdes_c-1].data_first=0;
2316 im->gdes[im->gdes_c-1].p_data=NULL;
2317 im->gdes[im->gdes_c-1].rpnp=NULL;
2318 im->gdes[im->gdes_c-1].col = 0x0;
2319 im->gdes[im->gdes_c-1].legend[0]='\0';
2320 im->gdes[im->gdes_c-1].rrd[0]='\0';
2321 im->gdes[im->gdes_c-1].ds=-1;
2322 im->gdes[im->gdes_c-1].p_data=NULL;
2326 /* copies input untill the first unescaped colon is found
2327 or until input ends. backslashes have to be escaped as well */
2329 scan_for_col(char *input, int len, char *output)
2334 input[inp] != ':' &&
2337 if (input[inp] == '\\' &&
2338 input[inp+1] != '\0' &&
2339 (input[inp+1] == '\\' ||
2340 input[inp+1] == ':')){
2341 output[outp++] = input[++inp];
2344 output[outp++] = input[inp];
2347 output[outp] = '\0';
2351 /* Some surgery done on this function, it became ridiculously big.
2353 ** - initializing now in rrd_graph_init()
2354 ** - options parsing now in rrd_graph_options()
2355 ** - script parsing now in rrd_graph_script()
2358 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2362 rrd_graph_init(&im);
2364 rrd_graph_options(argc,argv,&im);
2365 if (rrd_test_error()) return -1;
2367 if (strlen(argv[optind])>=MAXPATH) {
2368 rrd_set_error("filename (including path) too long");
2371 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2372 im.graphfile[MAXPATH-1]='\0';
2374 rrd_graph_script(argc,argv,&im);
2375 if (rrd_test_error()) return -1;
2377 /* Everything is now read and the actual work can start */
2380 if (graph_paint(&im,prdata)==-1){
2385 /* The image is generated and needs to be output.
2386 ** Also, if needed, print a line with information about the image.
2394 /* maybe prdata is not allocated yet ... lets do it now */
2395 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2396 rrd_set_error("malloc imginfo");
2400 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2402 rrd_set_error("malloc imginfo");
2405 filename=im.graphfile+strlen(im.graphfile);
2406 while(filename > im.graphfile) {
2407 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2411 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2418 rrd_graph_init(image_desc_t *im)
2422 im->xlab_user.minsec = -1;
2428 im->ylegend[0] = '\0';
2429 im->title[0] = '\0';
2433 im->unitsexponent= 9999;
2438 im->logarithmic = 0;
2439 im->ygridstep = DNAN;
2440 im->draw_x_grid = 1;
2441 im->draw_y_grid = 1;
2447 im->imgformat = IF_GIF; /* we default to GIF output */
2449 for(i=0;i<DIM(graph_col);i++)
2450 im->graph_col[i]=graph_col[i];
2452 for(i=0;i<DIM(text_prop);i++){
2453 im->text_prop[i].size = text_prop[i].size;
2454 im->text_prop[i].font = text_prop[i].font;
2459 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2462 char *parsetime_error = NULL;
2463 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2464 time_t start_tmp=0,end_tmp=0;
2466 struct time_value start_tv, end_tv;
2469 parsetime("end-24h", &start_tv);
2470 parsetime("now", &end_tv);
2473 static struct option long_options[] =
2475 {"start", required_argument, 0, 's'},
2476 {"end", required_argument, 0, 'e'},
2477 {"x-grid", required_argument, 0, 'x'},
2478 {"y-grid", required_argument, 0, 'y'},
2479 {"vertical-label",required_argument,0,'v'},
2480 {"width", required_argument, 0, 'w'},
2481 {"height", required_argument, 0, 'h'},
2482 {"interlaced", no_argument, 0, 'i'},
2483 {"upper-limit",required_argument, 0, 'u'},
2484 {"lower-limit",required_argument, 0, 'l'},
2485 {"rigid", no_argument, 0, 'r'},
2486 {"base", required_argument, 0, 'b'},
2487 {"logarithmic",no_argument, 0, 'o'},
2488 {"color", required_argument, 0, 'c'},
2489 {"font", required_argument, 0, 'n'},
2490 {"title", required_argument, 0, 't'},
2491 {"imginfo", required_argument, 0, 'f'},
2492 {"imgformat", required_argument, 0, 'a'},
2493 {"lazy", no_argument, 0, 'z'},
2494 {"zoom", required_argument, 0, 'm'},
2495 {"no-legend", no_argument, 0, 'g'},
2496 {"alt-y-grid", no_argument, 0, 257 },
2497 {"alt-autoscale", no_argument, 0, 258 },
2498 {"alt-autoscale-max", no_argument, 0, 259 },
2499 {"units-exponent",required_argument, 0, 260},
2500 {"step", required_argument, 0, 261},
2502 int option_index = 0;
2506 opt = getopt_long(argc, argv,
2507 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2508 long_options, &option_index);
2515 im->extra_flags |= ALTYGRID;
2518 im->extra_flags |= ALTAUTOSCALE;
2521 im->extra_flags |= ALTAUTOSCALE_MAX;
2524 im->extra_flags |= NOLEGEND;
2527 im->unitsexponent = atoi(optarg);
2530 im->step = atoi(optarg);
2533 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2534 rrd_set_error( "start time: %s", parsetime_error );
2539 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2540 rrd_set_error( "end time: %s", parsetime_error );
2545 if(strcmp(optarg,"none") == 0){
2551 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2553 &im->xlab_user.gridst,
2555 &im->xlab_user.mgridst,
2557 &im->xlab_user.labst,
2558 &im->xlab_user.precis,
2559 &stroff) == 7 && stroff != 0){
2560 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2561 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2562 rrd_set_error("unknown keyword %s",scan_gtm);
2564 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2565 rrd_set_error("unknown keyword %s",scan_mtm);
2567 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2568 rrd_set_error("unknown keyword %s",scan_ltm);
2571 im->xlab_user.minsec = 1;
2572 im->xlab_user.stst = im->xlab_form;
2574 rrd_set_error("invalid x-grid format");
2580 if(strcmp(optarg,"none") == 0){
2588 &im->ylabfact) == 2) {
2589 if(im->ygridstep<=0){
2590 rrd_set_error("grid step must be > 0");
2592 } else if (im->ylabfact < 1){
2593 rrd_set_error("label factor must be > 0");
2597 rrd_set_error("invalid y-grid format");
2602 strncpy(im->ylegend,optarg,150);
2603 im->ylegend[150]='\0';
2606 im->maxval = atof(optarg);
2609 im->minval = atof(optarg);
2612 im->base = atol(optarg);
2613 if(im->base != 1024 && im->base != 1000 ){
2614 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2619 long_tmp = atol(optarg);
2620 if (long_tmp < 10) {
2621 rrd_set_error("width below 10 pixels");
2624 im->xsize = long_tmp;
2627 long_tmp = atol(optarg);
2628 if (long_tmp < 10) {
2629 rrd_set_error("height below 10 pixels");
2632 im->ysize = long_tmp;
2641 im->imginfo = optarg;
2644 if((im->imgformat = if_conv(optarg)) == -1) {
2645 rrd_set_error("unsupported graphics format '%s'",optarg);
2653 im->logarithmic = 1;
2654 if (isnan(im->minval))
2660 col_nam,&color) == 2){
2662 if((ci=grc_conv(col_nam)) != -1){
2663 im->graph_col[ci]=color;
2665 rrd_set_error("invalid color name '%s'",col_nam);
2668 rrd_set_error("invalid color def format");
2673 /* originally this used char *prop = "" and
2674 ** char *font = "dummy" however this results
2675 ** in a SEG fault, at least on RH7.1
2677 ** The current implementation isn't proper
2678 ** either, font is never freed and prop uses
2679 ** a fixed width string
2688 prop,&size,font) == 3){
2690 if((sindex=text_prop_conv(prop)) != -1){
2691 im->text_prop[sindex].size=size;
2692 im->text_prop[sindex].font=font;
2693 if (sindex==0) { /* the default */
2694 im->text_prop[TEXT_PROP_TITLE].size=size;
2695 im->text_prop[TEXT_PROP_TITLE].font=font;
2696 im->text_prop[TEXT_PROP_AXIS].size=size;
2697 im->text_prop[TEXT_PROP_AXIS].font=font;
2698 im->text_prop[TEXT_PROP_UNIT].size=size;
2699 im->text_prop[TEXT_PROP_UNIT].font=font;
2700 im->text_prop[TEXT_PROP_LEGEND].size=size;
2701 im->text_prop[TEXT_PROP_LEGEND].font=font;
2704 rrd_set_error("invalid fonttag '%s'",prop);
2708 rrd_set_error("invalid text property format");
2714 im->zoom= atof(optarg);
2715 if (im->zoom <= 0.0) {
2716 rrd_set_error("zoom factor must be > 0");
2721 strncpy(im->title,optarg,150);
2722 im->title[150]='\0';
2727 rrd_set_error("unknown option '%c'", optopt);
2729 rrd_set_error("unknown option '%s'",argv[optind-1]);
2734 if (optind >= argc) {
2735 rrd_set_error("missing filename");
2739 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2740 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2744 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2745 /* error string is set in parsetime.c */
2749 if (start_tmp < 3600*24*365*10){
2750 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2754 if (end_tmp < start_tmp) {
2755 rrd_set_error("start (%ld) should be less than end (%ld)",
2756 start_tmp, end_tmp);
2760 im->start = start_tmp;
2765 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2769 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2771 for (i=optind+1;i<argc;i++) {
2776 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2781 /* Each command is one element from *argv[], we call this "line".
2783 ** Each command defines the most current gdes inside struct im.
2784 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2787 gdp=&im->gdes[im->gdes_c-1];
2790 /* function:newvname=string[:ds-name:CF] for xDEF
2791 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2792 ** function:vname#color[:num[:string]] for TICK
2793 ** function:vname-or-num#color[:string] for xRULE,PART
2794 ** function:vname:CF:string for xPRINT
2795 ** function:string for COMMENT
2799 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2801 rrd_set_error("Cannot parse function in line: %s",line);
2805 if(sscanf(funcname,"LINE%lf",&linewidth)){
2806 im->gdes[im->gdes_c-1].gf = GF_LINE;
2807 im->gdes[im->gdes_c-1].linewidth = linewidth;
2809 if ((gdp->gf=gf_conv(funcname))==-1) {
2810 rrd_set_error("'%s' is not a valid function name",funcname);
2816 /* If the error string is set, we exit at the end of the switch */
2819 if (rrd_graph_legend(gdp,&line[argstart])==0)
2820 rrd_set_error("Cannot parse comment in line: %s",line);
2826 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2827 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2829 rrd_set_error("Cannot parse name or num in line: %s",line);
2836 } else if (!rrd_graph_check_vname(im,vname,line)) {
2840 } else break; /* exit due to wrong vname */
2841 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2843 if (strlen(&line[argstart])!=0) {
2844 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2845 rrd_set_error("Cannot parse comment in line: %s",line);
2850 rrd_set_error("STACK must follow another graphing element");
2858 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2860 rrd_set_error("Cannot parse vname in line: %s",line);
2861 else if (rrd_graph_check_vname(im,vname,line))
2862 rrd_set_error("Undefined vname '%s' in line: %s",line);
2864 k=rrd_graph_color(im,&line[argstart],line,1);
2865 if (rrd_test_error()) break;
2866 argstart=argstart+j+k;
2867 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2869 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2872 if (strlen(&line[argstart])!=0)
2873 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2874 rrd_set_error("Cannot parse legend in line: %s",line);
2880 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2882 rrd_set_error("Cannot parse vname in line: '%s'",line);
2886 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2888 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2890 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2891 #define VIDX im->gdes[gdp->vidx]
2893 case -1: /* looks CF but is not really CF */
2894 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2896 case 0: /* CF present and correct */
2897 if (VIDX.gf == GF_VDEF)
2898 rrd_set_error("Don't use CF when printing VDEF");
2901 case 1: /* CF not present */
2902 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2903 else rrd_set_error("Printing DEF or CDEF needs CF");
2906 rrd_set_error("Oops, bug in GPRINT scanning");
2909 if (rrd_test_error()) break;
2911 if (strlen(&line[argstart])!=0) {
2912 if (rrd_graph_legend(gdp,&line[argstart])==0)
2913 rrd_set_error("Cannot parse legend in line: %s",line);
2914 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2915 strcpy(gdp->format, gdp->legend);
2921 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2923 rrd_set_error("Could not parse line: %s",line);
2926 if (find_var(im,gdp->vname)!=-1) {
2927 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2934 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2936 sscanf(&line[argstart],
2937 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2938 gdp->ds_nam, symname, &j, &k);
2939 if ((j==0)||(k!=0)) {
2940 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2943 rrd_graph_check_CF(im,symname,line);
2947 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2949 rrd_set_error("Cannot parse vname in line '%s'",line);
2953 if (rrd_graph_check_vname(im,vname,line)) return;
2954 if ( im->gdes[gdp->vidx].gf != GF_DEF
2955 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2956 rrd_set_error("variable '%s' not DEF nor "
2957 "CDEF in VDEF '%s'", vname,gdp->vname);
2960 vdef_parse(gdp,&line[argstart+strstart]);
2963 if (strstr(&line[argstart],":")!=NULL) {
2964 rrd_set_error("Error in RPN, line: %s",line);
2967 if ((gdp->rpnp = rpn_parse(
2972 rrd_set_error("invalid rpn expression in: %s",line);
2977 default: rrd_set_error("Big oops");
2979 if (rrd_test_error()) {
2986 rrd_set_error("can't make a graph without contents");
2987 im_free(im); /* ??? is this set ??? */
2992 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2994 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2995 rrd_set_error("Unknown variable '%s' in %s",varname,err);
3001 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
3004 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
3006 color=strstr(var,"#");
3009 rrd_set_error("Found no color in %s",err);
3018 rest=strstr(color,":");
3026 sscanf(color,"#%6x%n",&col,&n);
3027 col = (col << 8) + 0xff /* shift left by 8 */;
3028 if (n!=7) rrd_set_error("Color problem in %s",err);
3031 sscanf(color,"#%8x%n",&col,&n);
3034 rrd_set_error("Color problem in %s",err);
3036 if (rrd_test_error()) return 0;
3042 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
3044 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
3045 rrd_set_error("Unknown CF '%s' in %s",symname,err);
3051 rrd_graph_legend(graph_desc_t *gdp, char *line)
3055 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3057 return (strlen(&line[i])==0);
3061 int bad_format(char *fmt) {
3066 while (*ptr != '\0') {
3067 if (*ptr == '%') {ptr++;
3068 if (*ptr == '\0') return 1;
3069 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3072 if (*ptr == '\0') return 1;
3076 if (*ptr == '\0') return 1;
3077 if (*ptr == 'e' || *ptr == 'f') {
3079 } else { return 1; }
3081 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3090 vdef_parse(gdes,str)
3091 struct graph_desc_t *gdes;
3094 /* A VDEF currently is either "func" or "param,func"
3095 * so the parsing is rather simple. Change if needed.
3102 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3103 if (n==strlen(str)) { /* matched */
3107 sscanf(str,"%29[A-Z]%n",func,&n);
3108 if (n==strlen(str)) { /* matched */
3111 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3118 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3119 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3120 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3121 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3122 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3123 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3124 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3126 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3133 switch (gdes->vf.op) {
3135 if (isnan(param)) { /* no parameter given */
3136 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3142 if (param>=0.0 && param<=100.0) {
3143 gdes->vf.param = param;
3144 gdes->vf.val = DNAN; /* undefined */
3145 gdes->vf.when = 0; /* undefined */
3147 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3161 gdes->vf.param = DNAN;
3162 gdes->vf.val = DNAN;
3165 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3180 graph_desc_t *src,*dst;
3184 dst = &im->gdes[gdi];
3185 src = &im->gdes[dst->vidx];
3186 data = src->data + src->ds;
3187 steps = (src->end - src->start) / src->step;
3190 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3197 switch (dst->vf.op) {
3198 case VDEF_PERCENT: {
3199 rrd_value_t * array;
3203 if ((array = malloc(steps*sizeof(double)))==NULL) {
3204 rrd_set_error("malloc VDEV_PERCENT");
3207 for (step=0;step < steps; step++) {
3208 array[step]=data[step*src->ds_cnt];
3210 qsort(array,step,sizeof(double),vdef_percent_compar);
3212 field = (steps-1)*dst->vf.param/100;
3213 dst->vf.val = array[field];
3214 dst->vf.when = 0; /* no time component */
3216 for(step=0;step<steps;step++)
3217 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3223 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3224 if (step == steps) {
3228 dst->vf.val = data[step*src->ds_cnt];
3229 dst->vf.when = src->start + (step+1)*src->step;
3231 while (step != steps) {
3232 if (finite(data[step*src->ds_cnt])) {
3233 if (data[step*src->ds_cnt] > dst->vf.val) {
3234 dst->vf.val = data[step*src->ds_cnt];
3235 dst->vf.when = src->start + (step+1)*src->step;
3242 case VDEF_AVERAGE: {
3245 for (step=0;step<steps;step++) {
3246 if (finite(data[step*src->ds_cnt])) {
3247 sum += data[step*src->ds_cnt];
3252 if (dst->vf.op == VDEF_TOTAL) {
3253 dst->vf.val = sum*src->step;
3254 dst->vf.when = cnt*src->step; /* not really "when" */
3256 dst->vf.val = sum/cnt;
3257 dst->vf.when = 0; /* no time component */
3267 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3268 if (step == steps) {
3272 dst->vf.val = data[step*src->ds_cnt];
3273 dst->vf.when = src->start + (step+1)*src->step;
3275 while (step != steps) {
3276 if (finite(data[step*src->ds_cnt])) {
3277 if (data[step*src->ds_cnt] < dst->vf.val) {
3278 dst->vf.val = data[step*src->ds_cnt];
3279 dst->vf.when = src->start + (step+1)*src->step;
3286 /* The time value returned here is one step before the
3287 * actual time value. This is the start of the first
3291 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3292 if (step == steps) { /* all entries were NaN */
3296 dst->vf.val = data[step*src->ds_cnt];
3297 dst->vf.when = src->start + step*src->step;
3301 /* The time value returned here is the
3302 * actual time value. This is the end of the last
3306 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3307 if (step < 0) { /* all entries were NaN */
3311 dst->vf.val = data[step*src->ds_cnt];
3312 dst->vf.when = src->start + (step+1)*src->step;
3319 /* NaN < -INF < finite_values < INF */
3321 vdef_percent_compar(a,b)
3324 /* Equality is not returned; this doesn't hurt except
3325 * (maybe) for a little performance.
3328 /* First catch NaN values. They are smallest */
3329 if (isnan( *(double *)a )) return -1;
3330 if (isnan( *(double *)b )) return 1;
3332 /* NaN doesn't reach this part so INF and -INF are extremes.
3333 * The sign from isinf() is compatible with the sign we return
3335 if (isinf( *(double *)a )) return isinf( *(double *)a );
3336 if (isinf( *(double *)b )) return isinf( *(double *)b );
3338 /* If we reach this, both values must be finite */
3339 if ( *(double *)a < *(double *)b ) return -1; else return 1;