1 /****************************************************************************
2 * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
3 ****************************************************************************
4 * rrd__graph.c make creates ne rrds
5 ****************************************************************************/
17 #include "rrd_graph.h"
18 #include "rrd_graph_helper.h"
20 /* some constant definitions */
23 #ifndef RRD_DEFAULT_FONT
25 #define RRD_DEFAULT_FONT "c:/winnt/fonts/COUR.TTF"
27 #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf"
28 /* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
33 text_prop_t text_prop[] = {
34 { 10.0, RRD_DEFAULT_FONT }, /* default */
35 { 12.0, RRD_DEFAULT_FONT }, /* title */
36 { 8.0, RRD_DEFAULT_FONT }, /* axis */
37 { 10.0, RRD_DEFAULT_FONT }, /* unit */
38 { 10.0, RRD_DEFAULT_FONT } /* legend */
42 {0, TMT_SECOND,30, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
43 {2, TMT_MINUTE,1, TMT_MINUTE,5, TMT_MINUTE,5, 0,"%H:%M"},
44 {5, TMT_MINUTE,2, TMT_MINUTE,10, TMT_MINUTE,10, 0,"%H:%M"},
45 {10, TMT_MINUTE,5, TMT_MINUTE,20, TMT_MINUTE,20, 0,"%H:%M"},
46 {30, TMT_MINUTE,10, TMT_HOUR,1, TMT_HOUR,1, 0,"%H:%M"},
47 {60, TMT_MINUTE,30, TMT_HOUR,2, TMT_HOUR,2, 0,"%H:%M"},
48 {180, TMT_HOUR,1, TMT_HOUR,6, TMT_HOUR,6, 0,"%H:%M"},
49 /*{300, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly*/
50 {600, TMT_HOUR,6, TMT_DAY,1, TMT_DAY,1, 24*3600,"%a"},
51 {1800, TMT_HOUR,12, TMT_DAY,1, TMT_DAY,2, 24*3600,"%a"},
52 {3600, TMT_DAY,1, TMT_WEEK,1, TMT_WEEK,1, 7*24*3600,"Week %V"},
53 {3*3600, TMT_WEEK,1, TMT_MONTH,1, TMT_WEEK,2, 7*24*3600,"Week %V"},
54 {6*3600, TMT_MONTH,1, TMT_MONTH,1, TMT_MONTH,1, 30*24*3600,"%b"},
55 {48*3600, TMT_MONTH,1, TMT_MONTH,3, TMT_MONTH,3, 30*24*3600,"%b"},
56 {10*24*3600, TMT_YEAR,1, TMT_YEAR,1, TMT_YEAR,1, 365*24*3600,"%y"},
57 {-1,TMT_MONTH,0,TMT_MONTH,0,TMT_MONTH,0,0,""}
60 /* sensible logarithmic y label intervals ...
61 the first element of each row defines the possible starting points on the
62 y axis ... the other specify the */
64 double yloglab[][12]= {{ 1e9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
65 { 1e3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
66 { 1e1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
67 /* { 1e1, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, */
68 { 1e1, 1, 2.5, 5, 7.5, 0, 0, 0, 0, 0, 0, 0 },
69 { 1e1, 1, 2, 4, 6, 8, 0, 0, 0, 0, 0, 0 },
70 { 1e1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 },
71 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }};
73 /* sensible y label intervals ...*/
91 gfx_color_t graph_col[] = /* default colors */
92 { 0xFFFFFFFF, /* canvas */
93 0xF0F0F0FF, /* background */
94 0xD0D0D0FF, /* shade A */
95 0xA0A0A0FF, /* shade B */
96 0x909090FF, /* grid */
97 0xE05050FF, /* major grid */
98 0x000000FF, /* font */
99 0x000000FF, /* frame */
100 0xFF0000FF /* arrow */
107 # define DPRINT(x) (void)(printf x, printf("\n"))
113 /* initialize with xtr(im,0); */
115 xtr(image_desc_t *im,time_t mytime){
118 pixie = (double) im->xsize / (double)(im->end - im->start);
121 return (int)((double)im->xorigin
122 + pixie * ( mytime - im->start ) );
125 /* translate data values into y coordinates */
127 ytr(image_desc_t *im, double value){
132 pixie = (double) im->ysize / (im->maxval - im->minval);
134 pixie = (double) im->ysize / (log10(im->maxval) - log10(im->minval));
136 } else if(!im->logarithmic) {
137 yval = im->yorigin - pixie * (value - im->minval) + 0.5;
139 if (value < im->minval) {
142 yval = im->yorigin - pixie * (log10(value) - log10(im->minval)) + 0.5;
145 /* make sure we don't return anything too unreasonable. GD lib can
146 get terribly slow when drawing lines outside its scope. This is
147 especially problematic in connection with the rigid option */
150 } else if ((int)yval > im->yorigin) {
151 return im->yorigin+2;
152 } else if ((int) yval < im->yorigin - im->ysize){
153 return im->yorigin - im->ysize - 2;
161 /* conversion function for symbolic entry names */
164 #define conv_if(VV,VVV) \
165 if (strcmp(#VV, string) == 0) return VVV ;
167 enum gf_en gf_conv(char *string){
169 conv_if(PRINT,GF_PRINT)
170 conv_if(GPRINT,GF_GPRINT)
171 conv_if(COMMENT,GF_COMMENT)
172 conv_if(HRULE,GF_HRULE)
173 conv_if(VRULE,GF_VRULE)
174 conv_if(LINE,GF_LINE)
175 conv_if(AREA,GF_AREA)
176 conv_if(STACK,GF_STACK)
177 conv_if(TICK,GF_TICK)
179 conv_if(CDEF,GF_CDEF)
180 conv_if(VDEF,GF_VDEF)
181 conv_if(PART,GF_PART)
186 enum gfx_if_en if_conv(char *string){
194 enum tmt_en tmt_conv(char *string){
196 conv_if(SECOND,TMT_SECOND)
197 conv_if(MINUTE,TMT_MINUTE)
198 conv_if(HOUR,TMT_HOUR)
200 conv_if(WEEK,TMT_WEEK)
201 conv_if(MONTH,TMT_MONTH)
202 conv_if(YEAR,TMT_YEAR)
206 enum grc_en grc_conv(char *string){
208 conv_if(BACK,GRC_BACK)
209 conv_if(CANVAS,GRC_CANVAS)
210 conv_if(SHADEA,GRC_SHADEA)
211 conv_if(SHADEB,GRC_SHADEB)
212 conv_if(GRID,GRC_GRID)
213 conv_if(MGRID,GRC_MGRID)
214 conv_if(FONT,GRC_FONT)
215 conv_if(FRAME,GRC_FRAME)
216 conv_if(ARROW,GRC_ARROW)
221 enum text_prop_en text_prop_conv(char *string){
223 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
224 conv_if(TITLE,TEXT_PROP_TITLE)
225 conv_if(AXIS,TEXT_PROP_AXIS)
226 conv_if(UNIT,TEXT_PROP_UNIT)
227 conv_if(LEGEND,TEXT_PROP_LEGEND)
237 im_free(image_desc_t *im)
240 if (im == NULL) return 0;
241 for(i=0;i<im->gdes_c;i++){
242 if (im->gdes[i].data_first){
243 /* careful here, because a single pointer can occur several times */
244 free (im->gdes[i].data);
245 if (im->gdes[i].ds_namv){
246 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
247 free(im->gdes[i].ds_namv[ii]);
248 free(im->gdes[i].ds_namv);
251 free (im->gdes[i].p_data);
252 free (im->gdes[i].rpnp);
255 gfx_destroy(im->canvas);
259 /* find SI magnitude symbol for the given number*/
262 image_desc_t *im, /* image description */
269 char *symbol[] = {"a", /* 10e-18 Atto */
270 "f", /* 10e-15 Femto */
271 "p", /* 10e-12 Pico */
272 "n", /* 10e-9 Nano */
273 "u", /* 10e-6 Micro */
274 "m", /* 10e-3 Milli */
279 "T", /* 10e12 Tera */
280 "P", /* 10e15 Peta */
286 if (*value == 0.0 || isnan(*value) ) {
290 sindex = floor(log(fabs(*value))/log((double)im->base));
291 *magfact = pow((double)im->base, (double)sindex);
292 (*value) /= (*magfact);
294 if ( sindex <= symbcenter && sindex >= -symbcenter) {
295 (*symb_ptr) = symbol[sindex+symbcenter];
303 /* find SI magnitude symbol for the numbers on the y-axis*/
306 image_desc_t *im /* image description */
310 char symbol[] = {'a', /* 10e-18 Atto */
311 'f', /* 10e-15 Femto */
312 'p', /* 10e-12 Pico */
313 'n', /* 10e-9 Nano */
314 'u', /* 10e-6 Micro */
315 'm', /* 10e-3 Milli */
320 'T', /* 10e12 Tera */
321 'P', /* 10e15 Peta */
327 if (im->unitsexponent != 9999) {
328 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
329 digits = floor(im->unitsexponent / 3);
331 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
333 im->magfact = pow((double)im->base , digits);
336 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
339 if ( ((digits+symbcenter) < sizeof(symbol)) &&
340 ((digits+symbcenter) >= 0) )
341 im->symbol = symbol[(int)digits+symbcenter];
346 /* move min and max values around to become sensible */
349 expand_range(image_desc_t *im)
351 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
352 600.0,500.0,400.0,300.0,250.0,
353 200.0,125.0,100.0,90.0,80.0,
354 75.0,70.0,60.0,50.0,40.0,30.0,
355 25.0,20.0,10.0,9.0,8.0,
356 7.0,6.0,5.0,4.0,3.5,3.0,
357 2.5,2.0,1.8,1.5,1.2,1.0,
358 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
360 double scaled_min,scaled_max;
367 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
368 im->minval,im->maxval,im->magfact);
371 if (isnan(im->ygridstep)){
372 if(im->extra_flags & ALTAUTOSCALE) {
373 /* measure the amplitude of the function. Make sure that
374 graph boundaries are slightly higher then max/min vals
375 so we can see amplitude on the graph */
378 delt = im->maxval - im->minval;
380 fact = 2.0 * pow(10.0,
381 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
383 adj = (fact - delt) * 0.55;
385 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
391 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
392 /* measure the amplitude of the function. Make sure that
393 graph boundaries are slightly higher than max vals
394 so we can see amplitude on the graph */
395 adj = (im->maxval - im->minval) * 0.1;
399 scaled_min = im->minval / im->magfact;
400 scaled_max = im->maxval / im->magfact;
402 for (i=1; sensiblevalues[i] > 0; i++){
403 if (sensiblevalues[i-1]>=scaled_min &&
404 sensiblevalues[i]<=scaled_min)
405 im->minval = sensiblevalues[i]*(im->magfact);
407 if (-sensiblevalues[i-1]<=scaled_min &&
408 -sensiblevalues[i]>=scaled_min)
409 im->minval = -sensiblevalues[i-1]*(im->magfact);
411 if (sensiblevalues[i-1] >= scaled_max &&
412 sensiblevalues[i] <= scaled_max)
413 im->maxval = sensiblevalues[i-1]*(im->magfact);
415 if (-sensiblevalues[i-1]<=scaled_max &&
416 -sensiblevalues[i] >=scaled_max)
417 im->maxval = -sensiblevalues[i]*(im->magfact);
421 /* adjust min and max to the grid definition if there is one */
422 im->minval = (double)im->ylabfact * im->ygridstep *
423 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
424 im->maxval = (double)im->ylabfact * im->ygridstep *
425 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
429 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
430 im->minval,im->maxval,im->magfact);
435 /* reduce data reimplementation by Alex */
439 enum cf_en cf, /* which consolidation function ?*/
440 unsigned long cur_step, /* step the data currently is in */
441 time_t *start, /* start, end and step as requested ... */
442 time_t *end, /* ... by the application will be ... */
443 unsigned long *step, /* ... adjusted to represent reality */
444 unsigned long *ds_cnt, /* number of data sources in file */
445 rrd_value_t **data) /* two dimensional array containing the data */
447 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
448 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
449 rrd_value_t *srcptr,*dstptr;
451 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
454 row_cnt = ((*end)-(*start))/cur_step;
460 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
461 row_cnt,reduce_factor,*start,*end,cur_step);
462 for (col=0;col<row_cnt;col++) {
463 printf("time %10lu: ",*start+(col+1)*cur_step);
464 for (i=0;i<*ds_cnt;i++)
465 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
470 /* We have to combine [reduce_factor] rows of the source
471 ** into one row for the destination. Doing this we also
472 ** need to take care to combine the correct rows. First
473 ** alter the start and end time so that they are multiples
474 ** of the new step time. We cannot reduce the amount of
475 ** time so we have to move the end towards the future and
476 ** the start towards the past.
478 end_offset = (*end) % (*step);
479 start_offset = (*start) % (*step);
481 /* If there is a start offset (which cannot be more than
482 ** one destination row), skip the appropriate number of
483 ** source rows and one destination row. The appropriate
484 ** number is what we do know (start_offset/cur_step) of
485 ** the new interval (*step/cur_step aka reduce_factor).
488 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
489 printf("row_cnt before: %lu\n",row_cnt);
492 (*start) = (*start)-start_offset;
493 skiprows=reduce_factor-start_offset/cur_step;
494 srcptr+=skiprows* *ds_cnt;
495 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
499 printf("row_cnt between: %lu\n",row_cnt);
502 /* At the end we have some rows that are not going to be
503 ** used, the amount is end_offset/cur_step
506 (*end) = (*end)-end_offset+(*step);
507 skiprows = end_offset/cur_step;
511 printf("row_cnt after: %lu\n",row_cnt);
514 /* Sanity check: row_cnt should be multiple of reduce_factor */
515 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
517 if (row_cnt%reduce_factor) {
518 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
519 row_cnt,reduce_factor);
520 printf("BUG in reduce_data()\n");
524 /* Now combine reduce_factor intervals at a time
525 ** into one interval for the destination.
528 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
529 for (col=0;col<(*ds_cnt);col++) {
530 rrd_value_t newval=DNAN;
531 unsigned long validval=0;
533 for (i=0;i<reduce_factor;i++) {
534 if (isnan(srcptr[i*(*ds_cnt)+col])) {
538 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
546 newval += srcptr[i*(*ds_cnt)+col];
549 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
552 /* an interval contains a failure if any subintervals contained a failure */
554 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
557 newval = srcptr[i*(*ds_cnt)+col];
562 if (validval == 0){newval = DNAN;} else{
580 srcptr+=(*ds_cnt)*reduce_factor;
581 row_cnt-=reduce_factor;
583 /* If we had to alter the endtime, we didn't have enough
584 ** source rows to fill the last row. Fill it with NaN.
586 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
588 row_cnt = ((*end)-(*start))/ *step;
590 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
591 row_cnt,*start,*end,*step);
592 for (col=0;col<row_cnt;col++) {
593 printf("time %10lu: ",*start+(col+1)*(*step));
594 for (i=0;i<*ds_cnt;i++)
595 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
602 /* get the data required for the graphs from the
606 data_fetch( image_desc_t *im )
610 /* pull the data from the log files ... */
611 for (i=0;i<im->gdes_c;i++){
612 /* only GF_DEF elements fetch data */
613 if (im->gdes[i].gf != GF_DEF)
617 /* do we have it already ?*/
618 for (ii=0;ii<i;ii++){
619 if (im->gdes[ii].gf != GF_DEF)
621 if((strcmp(im->gdes[i].rrd,im->gdes[ii].rrd) == 0)
622 && (im->gdes[i].cf == im->gdes[ii].cf)){
623 /* OK the data it is here already ...
624 * we just copy the header portion */
625 im->gdes[i].start = im->gdes[ii].start;
626 im->gdes[i].end = im->gdes[ii].end;
627 im->gdes[i].step = im->gdes[ii].step;
628 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
629 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
630 im->gdes[i].data = im->gdes[ii].data;
631 im->gdes[i].data_first = 0;
638 unsigned long ft_step = im->gdes[i].step ;
640 if((rrd_fetch_fn(im->gdes[i].rrd,
646 &im->gdes[i].ds_namv,
647 &im->gdes[i].data)) == -1){
650 im->gdes[i].data_first = 1;
652 if (ft_step < im->gdes[i].step) {
653 reduce_data(im->gdes[i].cf,
661 im->gdes[i].step = ft_step;
665 /* lets see if the required data source is realy there */
666 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
667 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
670 if (im->gdes[i].ds== -1){
671 rrd_set_error("No DS called '%s' in '%s'",
672 im->gdes[i].ds_nam,im->gdes[i].rrd);
680 /* evaluate the expressions in the CDEF functions */
682 /*************************************************************
684 *************************************************************/
687 find_var_wrapper(void *arg1, char *key)
689 return find_var((image_desc_t *) arg1, key);
692 /* find gdes containing var*/
694 find_var(image_desc_t *im, char *key){
696 for(ii=0;ii<im->gdes_c-1;ii++){
697 if((im->gdes[ii].gf == GF_DEF
698 || im->gdes[ii].gf == GF_VDEF
699 || im->gdes[ii].gf == GF_CDEF)
700 && (strcmp(im->gdes[ii].vname,key) == 0)){
707 /* find the largest common denominator for all the numbers
708 in the 0 terminated num array */
713 for (i=0;num[i+1]!=0;i++){
715 rest=num[i] % num[i+1];
716 num[i]=num[i+1]; num[i+1]=rest;
720 /* return i==0?num[i]:num[i-1]; */
724 /* run the rpn calculator on all the VDEF and CDEF arguments */
726 data_calc( image_desc_t *im){
730 long *steparray, rpi;
735 rpnstack_init(&rpnstack);
737 for (gdi=0;gdi<im->gdes_c;gdi++){
738 /* Look for GF_VDEF and GF_CDEF in the same loop,
739 * so CDEFs can use VDEFs and vice versa
741 switch (im->gdes[gdi].gf) {
743 /* A VDEF has no DS. This also signals other parts
744 * of rrdtool that this is a VDEF value, not a CDEF.
746 im->gdes[gdi].ds_cnt = 0;
747 if (vdef_calc(im,gdi)) {
748 rrd_set_error("Error processing VDEF '%s'"
751 rpnstack_free(&rpnstack);
756 im->gdes[gdi].ds_cnt = 1;
757 im->gdes[gdi].ds = 0;
758 im->gdes[gdi].data_first = 1;
759 im->gdes[gdi].start = 0;
760 im->gdes[gdi].end = 0;
765 /* Find the variables in the expression.
766 * - VDEF variables are substituted by their values
767 * and the opcode is changed into OP_NUMBER.
768 * - CDEF variables are analized for their step size,
769 * the lowest common denominator of all the step
770 * sizes of the data sources involved is calculated
771 * and the resulting number is the step size for the
772 * resulting data source.
774 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
775 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
776 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
777 if (im->gdes[ptr].ds_cnt == 0) {
779 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
781 im->gdes[ptr].vname);
782 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
784 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
785 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
787 if ((steparray = rrd_realloc(steparray, (++stepcnt+1)*sizeof(*steparray)))==NULL){
788 rrd_set_error("realloc steparray");
789 rpnstack_free(&rpnstack);
793 steparray[stepcnt-1] = im->gdes[ptr].step;
795 /* adjust start and end of cdef (gdi) so
796 * that it runs from the latest start point
797 * to the earliest endpoint of any of the
798 * rras involved (ptr)
800 if(im->gdes[gdi].start < im->gdes[ptr].start)
801 im->gdes[gdi].start = im->gdes[ptr].start;
803 if(im->gdes[gdi].end == 0 ||
804 im->gdes[gdi].end > im->gdes[ptr].end)
805 im->gdes[gdi].end = im->gdes[ptr].end;
807 /* store pointer to the first element of
808 * the rra providing data for variable,
809 * further save step size and data source
812 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
813 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
814 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
816 /* backoff the *.data ptr; this is done so
817 * rpncalc() function doesn't have to treat
818 * the first case differently
820 } /* if ds_cnt != 0 */
821 } /* if OP_VARIABLE */
822 } /* loop through all rpi */
824 /* move the data pointers to the correct period */
825 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
826 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
827 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
828 if(im->gdes[gdi].start > im->gdes[ptr].start) {
829 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
835 if(steparray == NULL){
836 rrd_set_error("rpn expressions without DEF"
837 " or CDEF variables are not supported");
838 rpnstack_free(&rpnstack);
841 steparray[stepcnt]=0;
842 /* Now find the resulting step. All steps in all
843 * used RRAs have to be visited
845 im->gdes[gdi].step = lcd(steparray);
847 if((im->gdes[gdi].data = malloc((
848 (im->gdes[gdi].end-im->gdes[gdi].start)
849 / im->gdes[gdi].step)
850 * sizeof(double)))==NULL){
851 rrd_set_error("malloc im->gdes[gdi].data");
852 rpnstack_free(&rpnstack);
856 /* Step through the new cdef results array and
857 * calculate the values
859 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
860 now<=im->gdes[gdi].end;
861 now += im->gdes[gdi].step)
863 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
865 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
866 * in this case we are advancing by timesteps;
867 * we use the fact that time_t is a synonym for long
869 if (rpn_calc(rpnp,&rpnstack,(long) now,
870 im->gdes[gdi].data,++dataidx) == -1) {
871 /* rpn_calc sets the error string */
872 rpnstack_free(&rpnstack);
875 } /* enumerate over time steps within a CDEF */
880 } /* enumerate over CDEFs */
881 rpnstack_free(&rpnstack);
885 /* massage data so, that we get one value for each x coordinate in the graph */
887 data_proc( image_desc_t *im ){
889 double pixstep = (double)(im->end-im->start)
890 /(double)im->xsize; /* how much time
891 passes in one pixel */
893 double minval=DNAN,maxval=DNAN;
895 unsigned long gr_time;
897 /* memory for the processed data */
898 for(i=0;i<im->gdes_c;i++){
899 if((im->gdes[i].gf==GF_LINE) ||
900 (im->gdes[i].gf==GF_AREA) ||
901 (im->gdes[i].gf==GF_TICK) ||
902 (im->gdes[i].gf==GF_STACK)){
903 if((im->gdes[i].p_data = malloc((im->xsize +1)
904 * sizeof(rrd_value_t)))==NULL){
905 rrd_set_error("malloc data_proc");
911 for(i=0;i<im->xsize;i++){
913 gr_time = im->start+pixstep*i; /* time of the
917 for(ii=0;ii<im->gdes_c;ii++){
919 switch(im->gdes[ii].gf){
925 vidx = im->gdes[ii].vidx;
929 ((unsigned long)floor(
930 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
932 ) *im->gdes[vidx].ds_cnt
935 if (! isnan(value)) {
937 im->gdes[ii].p_data[i] = paintval;
938 /* GF_TICK: the data values are not relevant for min and max */
939 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
940 if (isnan(minval) || paintval < minval)
942 if (isnan(maxval) || paintval > maxval)
946 im->gdes[ii].p_data[i] = DNAN;
963 /* if min or max have not been asigned a value this is because
964 there was no data in the graph ... this is not good ...
965 lets set these to dummy values then ... */
967 if (isnan(minval)) minval = 0.0;
968 if (isnan(maxval)) maxval = 1.0;
970 /* adjust min and max values */
971 if (isnan(im->minval)
972 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
973 && im->minval > minval))
975 if (isnan(im->maxval)
977 && im->maxval < maxval)){
979 im->maxval = maxval * 1.1;
983 /* make sure min and max are not equal */
984 if (im->minval == im->maxval) {
986 if (! im->logarithmic) {
990 /* make sure min and max are not both zero */
991 if (im->maxval == 0.0) {
1001 /* identify the point where the first gridline, label ... gets placed */
1005 time_t start, /* what is the initial time */
1006 enum tmt_en baseint, /* what is the basic interval */
1007 long basestep /* how many if these do we jump a time */
1011 tm = *localtime(&start);
1014 tm.tm_sec -= tm.tm_sec % basestep; break;
1017 tm.tm_min -= tm.tm_min % basestep;
1022 tm.tm_hour -= tm.tm_hour % basestep; break;
1024 /* we do NOT look at the basestep for this ... */
1027 tm.tm_hour = 0; break;
1029 /* we do NOT look at the basestep for this ... */
1033 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1034 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1041 tm.tm_mon -= tm.tm_mon % basestep; break;
1049 tm.tm_year -= (tm.tm_year+1900) % basestep;
1054 /* identify the point where the next gridline, label ... gets placed */
1057 time_t current, /* what is the initial time */
1058 enum tmt_en baseint, /* what is the basic interval */
1059 long basestep /* how many if these do we jump a time */
1064 tm = *localtime(¤t);
1068 tm.tm_sec += basestep; break;
1070 tm.tm_min += basestep; break;
1072 tm.tm_hour += basestep; break;
1074 tm.tm_mday += basestep; break;
1076 tm.tm_mday += 7*basestep; break;
1078 tm.tm_mon += basestep; break;
1080 tm.tm_year += basestep;
1082 madetime = mktime(&tm);
1083 } while (madetime == -1); /* this is necessary to skip impssible times
1084 like the daylight saving time skips */
1090 /* calculate values required for PRINT and GPRINT functions */
1093 print_calc(image_desc_t *im, char ***prdata)
1095 long i,ii,validsteps;
1098 int graphelement = 0;
1101 double magfact = -1;
1105 if (im->imginfo) prlines++;
1106 for(i=0;i<im->gdes_c;i++){
1107 switch(im->gdes[i].gf){
1110 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1111 rrd_set_error("realloc prdata");
1115 /* PRINT and GPRINT can now print VDEF generated values.
1116 * There's no need to do any calculations on them as these
1117 * calculations were already made.
1119 vidx = im->gdes[i].vidx;
1120 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1121 printval = im->gdes[vidx].vf.val;
1122 printtime = im->gdes[vidx].vf.when;
1123 } else { /* need to calculate max,min,avg etcetera */
1124 max_ii =((im->gdes[vidx].end
1125 - im->gdes[vidx].start)
1126 / im->gdes[vidx].step
1127 * im->gdes[vidx].ds_cnt);
1130 for( ii=im->gdes[vidx].ds;
1132 ii+=im->gdes[vidx].ds_cnt){
1133 if (! finite(im->gdes[vidx].data[ii]))
1135 if (isnan(printval)){
1136 printval = im->gdes[vidx].data[ii];
1141 switch (im->gdes[i].cf){
1144 case CF_DEVSEASONAL:
1148 printval += im->gdes[vidx].data[ii];
1151 printval = min( printval, im->gdes[vidx].data[ii]);
1155 printval = max( printval, im->gdes[vidx].data[ii]);
1158 printval = im->gdes[vidx].data[ii];
1161 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1162 if (validsteps > 1) {
1163 printval = (printval / validsteps);
1166 } /* prepare printval */
1168 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1169 if (im->gdes[i].gf == GF_PRINT){
1170 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1171 sprintf((*prdata)[prlines-2],"%s (%lu)",
1172 ctime(&printtime),printtime);
1173 (*prdata)[prlines-1] = NULL;
1175 sprintf(im->gdes[i].legend,"%s (%lu)",
1176 ctime(&printtime),printtime);
1180 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1181 /* Magfact is set to -1 upon entry to print_calc. If it
1182 * is still less than 0, then we need to run auto_scale.
1183 * Otherwise, put the value into the correct units. If
1184 * the value is 0, then do not set the symbol or magnification
1185 * so next the calculation will be performed again. */
1186 if (magfact < 0.0) {
1187 auto_scale(im,&printval,&si_symb,&magfact);
1188 if (printval == 0.0)
1191 printval /= magfact;
1193 *(++percent_s) = 's';
1194 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1195 auto_scale(im,&printval,&si_symb,&magfact);
1198 if (im->gdes[i].gf == GF_PRINT){
1199 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1200 if (bad_format(im->gdes[i].format)) {
1201 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1204 #ifdef HAVE_SNPRINTF
1205 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1207 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1209 (*prdata)[prlines-1] = NULL;
1213 if (bad_format(im->gdes[i].format)) {
1214 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1217 #ifdef HAVE_SNPRINTF
1218 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1220 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1242 return graphelement;
1246 /* place legends with color spots */
1248 leg_place(image_desc_t *im)
1251 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1252 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1253 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1254 int fill=0, fill_last;
1256 int leg_x = border, leg_y = im->yimg;
1260 char prt_fctn; /*special printfunctions */
1263 if( !(im->extra_flags & NOLEGEND) ) {
1264 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1265 rrd_set_error("malloc for legspace");
1269 for(i=0;i<im->gdes_c;i++){
1272 leg_cc = strlen(im->gdes[i].legend);
1274 /* is there a controle code ant the end of the legend string ? */
1275 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1276 prt_fctn = im->gdes[i].legend[leg_cc-1];
1278 im->gdes[i].legend[leg_cc] = '\0';
1282 /* remove exess space */
1283 while (prt_fctn=='g' &&
1285 im->gdes[i].legend[leg_cc-1]==' '){
1287 im->gdes[i].legend[leg_cc]='\0';
1290 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1293 /* no interleg space if string ends in \g */
1294 fill += legspace[i];
1296 if (im->gdes[i].gf != GF_GPRINT &&
1297 im->gdes[i].gf != GF_COMMENT) {
1300 fill += gfx_get_text_width(im->canvas, fill+border,
1301 im->text_prop[TEXT_PROP_LEGEND].font,
1302 im->text_prop[TEXT_PROP_LEGEND].size,
1304 im->gdes[i].legend);
1309 /* who said there was a special tag ... ?*/
1310 if (prt_fctn=='g') {
1313 if (prt_fctn == '\0') {
1314 if (i == im->gdes_c -1 ) prt_fctn ='l';
1316 /* is it time to place the legends ? */
1317 if (fill > im->ximg - 2*border){
1332 if (prt_fctn != '\0'){
1334 if (leg_c >= 2 && prt_fctn == 'j') {
1335 glue = (im->ximg - fill - 2* border) / (leg_c-1);
1339 if (prt_fctn =='c') leg_x = (im->ximg - fill) / 2.0;
1340 if (prt_fctn =='r') leg_x = im->ximg - fill - border;
1342 for(ii=mark;ii<=i;ii++){
1343 if(im->gdes[ii].legend[0]=='\0')
1345 im->gdes[ii].leg_x = leg_x;
1346 im->gdes[ii].leg_y = leg_y;
1348 gfx_get_text_width(im->canvas, leg_x,
1349 im->text_prop[TEXT_PROP_LEGEND].font,
1350 im->text_prop[TEXT_PROP_LEGEND].size,
1352 im->gdes[ii].legend)
1355 if (im->gdes[ii].gf != GF_GPRINT &&
1356 im->gdes[ii].gf != GF_COMMENT)
1359 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1360 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1372 /* create a grid on the graph. it determines what to do
1373 from the values of xsize, start and end */
1375 /* the xaxis labels are determined from the number of seconds per pixel
1376 in the requested graph */
1381 horizontal_grid(image_desc_t *im)
1389 char graph_label[100];
1391 int labfact,gridind;
1392 int decimals, fractionals;
1397 range = im->maxval - im->minval;
1398 scaledrange = range / im->magfact;
1400 /* does the scale of this graph make it impossible to put lines
1401 on it? If so, give up. */
1402 if (isnan(scaledrange)) {
1406 /* find grid spaceing */
1408 if(isnan(im->ygridstep)){
1409 if(im->extra_flags & ALTYGRID) {
1410 /* find the value with max number of digits. Get number of digits */
1411 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1412 if(decimals <= 0) /* everything is small. make place for zero */
1415 fractionals = floor(log10(range));
1416 if(fractionals < 0) /* small amplitude. */
1417 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1419 sprintf(labfmt, "%%%d.1f", decimals + 1);
1420 gridstep = pow((double)10, (double)fractionals);
1421 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1423 /* should have at least 5 lines but no more then 15 */
1424 if(range/gridstep < 5)
1426 if(range/gridstep > 15)
1428 if(range/gridstep > 5) {
1430 if(range/gridstep > 8)
1439 for(i=0;ylab[i].grid > 0;i++){
1440 pixel = im->ysize / (scaledrange / ylab[i].grid);
1441 if (gridind == -1 && pixel > 5) {
1448 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1449 labfact = ylab[gridind].lfac[i];
1454 gridstep = ylab[gridind].grid * im->magfact;
1457 gridstep = im->ygridstep;
1458 labfact = im->ylabfact;
1462 X1=im->xorigin+im->xsize;
1464 sgrid = (int)( im->minval / gridstep - 1);
1465 egrid = (int)( im->maxval / gridstep + 1);
1466 scaledstep = gridstep/im->magfact;
1467 for (i = sgrid; i <= egrid; i++){
1468 Y0=ytr(im,gridstep*i);
1469 if ( Y0 >= im->yorigin-im->ysize
1470 && Y0 <= im->yorigin){
1471 if(i % labfact == 0){
1472 if (i==0 || im->symbol == ' ') {
1474 if(im->extra_flags & ALTYGRID) {
1475 sprintf(graph_label,labfmt,scaledstep*i);
1478 sprintf(graph_label,"%4.1f",scaledstep*i);
1481 sprintf(graph_label,"%4.0f",scaledstep*i);
1485 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1487 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1491 gfx_new_text ( im->canvas,
1492 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1493 im->graph_col[GRC_FONT],
1494 im->text_prop[TEXT_PROP_AXIS].font,
1495 im->text_prop[TEXT_PROP_AXIS].size,
1496 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1498 gfx_new_line ( im->canvas,
1501 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1504 gfx_new_line ( im->canvas,
1507 GRIDWIDTH, im->graph_col[GRC_GRID] );
1515 /* logaritmic horizontal grid */
1517 horizontal_log_grid(image_desc_t *im)
1521 int minoridx=0, majoridx=0;
1522 char graph_label[100];
1524 double value, pixperstep, minstep;
1526 /* find grid spaceing */
1527 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1529 if (isnan(pixpex)) {
1533 for(i=0;yloglab[i][0] > 0;i++){
1534 minstep = log10(yloglab[i][0]);
1535 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1536 if(yloglab[i][ii+2]==0){
1537 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1541 pixperstep = pixpex * minstep;
1542 if(pixperstep > 5){minoridx = i;}
1543 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1547 X1=im->xorigin+im->xsize;
1548 /* paint minor grid */
1549 for (value = pow((double)10, log10(im->minval)
1550 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1551 value <= im->maxval;
1552 value *= yloglab[minoridx][0]){
1553 if (value < im->minval) continue;
1555 while(yloglab[minoridx][++i] > 0){
1556 Y0 = ytr(im,value * yloglab[minoridx][i]);
1557 if (Y0 <= im->yorigin - im->ysize) break;
1558 gfx_new_line ( im->canvas,
1561 GRIDWIDTH, im->graph_col[GRC_GRID] );
1565 /* paint major grid and labels*/
1566 for (value = pow((double)10, log10(im->minval)
1567 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1568 value <= im->maxval;
1569 value *= yloglab[majoridx][0]){
1570 if (value < im->minval) continue;
1572 while(yloglab[majoridx][++i] > 0){
1573 Y0 = ytr(im,value * yloglab[majoridx][i]);
1574 if (Y0 <= im->yorigin - im->ysize) break;
1575 gfx_new_line ( im->canvas,
1578 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1580 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1581 gfx_new_text ( im->canvas,
1582 X0-im->text_prop[TEXT_PROP_AXIS].size/1.5, Y0,
1583 im->graph_col[GRC_FONT],
1584 im->text_prop[TEXT_PROP_AXIS].font,
1585 im->text_prop[TEXT_PROP_AXIS].size,
1586 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1598 int xlab_sel; /* which sort of label and grid ? */
1601 char graph_label[100];
1602 double X0,Y0,Y1; /* points for filled graph and more*/
1605 /* the type of time grid is determined by finding
1606 the number of seconds per pixel in the graph */
1609 if(im->xlab_user.minsec == -1){
1610 factor=(im->end - im->start)/im->xsize;
1612 while ( xlab[xlab_sel+1].minsec != -1
1613 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1614 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1615 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1616 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1617 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1618 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1619 im->xlab_user.labst = xlab[xlab_sel].labst;
1620 im->xlab_user.precis = xlab[xlab_sel].precis;
1621 im->xlab_user.stst = xlab[xlab_sel].stst;
1624 /* y coords are the same for every line ... */
1626 Y1 = im->yorigin-im->ysize;
1629 /* paint the minor grid */
1630 for(ti = find_first_time(im->start,
1631 im->xlab_user.gridtm,
1632 im->xlab_user.gridst);
1634 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1636 /* are we inside the graph ? */
1637 if (ti < im->start || ti > im->end) continue;
1639 gfx_new_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1643 /* paint the major grid */
1644 for(ti = find_first_time(im->start,
1645 im->xlab_user.mgridtm,
1646 im->xlab_user.mgridst);
1648 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1650 /* are we inside the graph ? */
1651 if (ti < im->start || ti > im->end) continue;
1653 gfx_new_line(im->canvas,X0,Y0+2, X0,Y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1656 /* paint the labels below the graph */
1657 for(ti = find_first_time(im->start,
1658 im->xlab_user.labtm,
1659 im->xlab_user.labst);
1661 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1663 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1664 /* are we inside the graph ? */
1665 if (ti < im->start || ti > im->end) continue;
1668 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1670 # error "your libc has no strftime I guess we'll abort the exercise here."
1672 gfx_new_text ( im->canvas,
1673 xtr(im,tilab), Y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1674 im->graph_col[GRC_FONT],
1675 im->text_prop[TEXT_PROP_AXIS].font,
1676 im->text_prop[TEXT_PROP_AXIS].size,
1677 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1690 /* draw x and y axis */
1691 gfx_new_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
1692 im->xorigin+im->xsize,im->yorigin-im->ysize,
1693 GRIDWIDTH, im->graph_col[GRC_GRID]);
1695 gfx_new_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
1696 im->xorigin+im->xsize,im->yorigin-im->ysize,
1697 GRIDWIDTH, im->graph_col[GRC_GRID]);
1699 gfx_new_line ( im->canvas, im->xorigin-4,im->yorigin,
1700 im->xorigin+im->xsize+4,im->yorigin,
1701 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1703 gfx_new_line ( im->canvas, im->xorigin,im->yorigin+4,
1704 im->xorigin,im->yorigin-im->ysize-4,
1705 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1708 /* arrow for X axis direction */
1709 gfx_new_area ( im->canvas,
1710 im->xorigin+im->xsize+3, im->yorigin-3,
1711 im->xorigin+im->xsize+3, im->yorigin+4,
1712 im->xorigin+im->xsize+8, im->yorigin+0.5, /* LINEOFFSET */
1713 im->graph_col[GRC_ARROW]);
1720 grid_paint(image_desc_t *im)
1724 double X0,Y0; /* points for filled graph and more*/
1727 /* draw 3d border */
1728 node = gfx_new_area (im->canvas, 0,im->yimg,
1730 2,2,im->graph_col[GRC_SHADEA]);
1731 gfx_add_point( node , im->ximg - 2, 2 );
1732 gfx_add_point( node , im->ximg, 0 );
1733 gfx_add_point( node , 0,0 );
1734 /* gfx_add_point( node , 0,im->yimg ); */
1736 node = gfx_new_area (im->canvas, 2,im->yimg-2,
1737 im->ximg-2,im->yimg-2,
1739 im->graph_col[GRC_SHADEB]);
1740 gfx_add_point( node , im->ximg,0);
1741 gfx_add_point( node , im->ximg,im->yimg);
1742 gfx_add_point( node , 0,im->yimg);
1743 /* gfx_add_point( node , 0,im->yimg ); */
1746 if (im->draw_x_grid == 1 )
1749 if (im->draw_y_grid == 1){
1750 if(im->logarithmic){
1751 res = horizontal_log_grid(im);
1753 res = horizontal_grid(im);
1756 /* dont draw horizontal grid if there is no min and max val */
1758 char *nodata = "No Data found";
1759 gfx_new_text(im->canvas,im->ximg/2, (2*im->yorigin-im->ysize) / 2,
1760 im->graph_col[GRC_FONT],
1761 im->text_prop[TEXT_PROP_AXIS].font,
1762 im->text_prop[TEXT_PROP_AXIS].size,
1763 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1768 /* yaxis description */
1769 if (im->canvas->imgformat != IF_PNG) {
1770 gfx_new_text( im->canvas,
1771 7, (im->yorigin - im->ysize/2),
1772 im->graph_col[GRC_FONT],
1773 im->text_prop[TEXT_PROP_AXIS].font,
1774 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1775 GFX_H_CENTER, GFX_V_CENTER,
1778 /* horrible hack until we can actually print vertically */
1781 int l=strlen(im->ylegend);
1783 for (n=0;n<strlen(im->ylegend);n++) {
1784 s[0]=im->ylegend[n];
1786 gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(l-n),
1787 im->graph_col[GRC_FONT],
1788 im->text_prop[TEXT_PROP_AXIS].font,
1789 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1790 GFX_H_CENTER, GFX_V_CENTER,
1797 gfx_new_text( im->canvas,
1798 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size,
1799 im->graph_col[GRC_FONT],
1800 im->text_prop[TEXT_PROP_TITLE].font,
1801 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1802 GFX_H_CENTER, GFX_V_CENTER,
1806 if( !(im->extra_flags & NOLEGEND) ) {
1807 for(i=0;i<im->gdes_c;i++){
1808 if(im->gdes[i].legend[0] =='\0')
1811 /* im->gdes[i].leg_y is the bottom of the legend */
1812 X0 = im->gdes[i].leg_x;
1813 Y0 = im->gdes[i].leg_y;
1815 if ( im->gdes[i].gf != GF_GPRINT
1816 && im->gdes[i].gf != GF_COMMENT) {
1819 boxH = gfx_get_text_width(im->canvas, 0,
1820 im->text_prop[TEXT_PROP_AXIS].font,
1821 im->text_prop[TEXT_PROP_AXIS].size,
1822 im->tabwidth,"M") * 1.25;
1825 node = gfx_new_area(im->canvas,
1830 gfx_add_point ( node, X0+boxH, Y0-boxV );
1831 node = gfx_new_line(im->canvas,
1834 gfx_add_point(node,X0+boxH,Y0);
1835 gfx_add_point(node,X0+boxH,Y0-boxV);
1836 gfx_close_path(node);
1837 X0 += boxH / 1.25 * 2;
1839 gfx_new_text ( im->canvas, X0, Y0,
1840 im->graph_col[GRC_FONT],
1841 im->text_prop[TEXT_PROP_AXIS].font,
1842 im->text_prop[TEXT_PROP_AXIS].size,
1843 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1844 im->gdes[i].legend );
1850 /*****************************************************
1851 * lazy check make sure we rely need to create this graph
1852 *****************************************************/
1854 int lazy_check(image_desc_t *im){
1857 struct stat imgstat;
1859 if (im->lazy == 0) return 0; /* no lazy option */
1860 if (stat(im->graphfile,&imgstat) != 0)
1861 return 0; /* can't stat */
1862 /* one pixel in the existing graph is more then what we would
1864 if (time(NULL) - imgstat.st_mtime >
1865 (im->end - im->start) / im->xsize)
1867 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1868 return 0; /* the file does not exist */
1869 switch (im->canvas->imgformat) {
1871 size = PngSize(fd,&(im->ximg),&(im->yimg));
1881 pie_part(image_desc_t *im, gfx_color_t color,
1882 double PieCenterX, double PieCenterY, double Radius,
1883 double startangle, double endangle)
1887 double step=M_PI/50; /* Number of iterations for the circle;
1888 ** 10 is definitely too low, more than
1889 ** 50 seems to be overkill
1892 /* Strange but true: we have to work clockwise or else
1893 ** anti aliasing nor transparency don't work.
1895 ** This test is here to make sure we do it right, also
1896 ** this makes the for...next loop more easy to implement.
1897 ** The return will occur if the user enters a negative number
1898 ** (which shouldn't be done according to the specs) or if the
1899 ** programmers do something wrong (which, as we all know, never
1900 ** happens anyway :)
1902 if (endangle<startangle) return;
1904 /* Hidden feature: Radius decreases each full circle */
1906 while (angle>=2*M_PI) {
1911 node=gfx_new_area(im->canvas,
1912 PieCenterX+sin(startangle)*Radius,
1913 PieCenterY-cos(startangle)*Radius,
1916 PieCenterX+sin(endangle)*Radius,
1917 PieCenterY-cos(endangle)*Radius,
1919 for (angle=endangle;angle-startangle>=step;angle-=step) {
1921 PieCenterX+sin(angle)*Radius,
1922 PieCenterY-cos(angle)*Radius );
1927 graph_size_location(image_desc_t *im, int elements, int piechart )
1929 /* The actual size of the image to draw is determined from
1930 ** several sources. The size given on the command line is
1931 ** the graph area but we need more as we have to draw labels
1932 ** and other things outside the graph area
1935 /* +-+-------------------------------------------+
1936 ** |l|.................title.....................|
1937 ** |e+--+-------------------------------+--------+
1940 ** |l| l| main graph area | chart |
1943 ** |r+--+-------------------------------+--------+
1944 ** |e| | x-axis labels | |
1945 ** |v+--+-------------------------------+--------+
1946 ** | |..............legends......................|
1947 ** +-+-------------------------------------------+
1949 int Xvertical=0, Yvertical=0,
1950 Xtitle =0, Ytitle =0,
1951 Xylabel =0, Yylabel =0,
1954 Xxlabel =0, Yxlabel =0,
1956 Xlegend =0, Ylegend =0,
1958 Xspacing =10, Yspacing =10;
1960 if (im->ylegend[0] != '\0') {
1961 Xvertical = im->text_prop[TEXT_PROP_LEGEND].size *2;
1962 Yvertical = im->text_prop[TEXT_PROP_LEGEND].size * (strlen(im->ylegend)+1);
1965 if (im->title[0] != '\0') {
1966 /* The title is placed "inbetween" two text lines so it
1967 ** automatically has some vertical spacing. The horizontal
1968 ** spacing is added here, on each side.
1970 Xtitle = gfx_get_text_width(im->canvas, 0,
1971 im->text_prop[TEXT_PROP_TITLE].font,
1972 im->text_prop[TEXT_PROP_TITLE].size,
1974 im->title) + 2*Xspacing;
1975 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2;
1981 if (im->draw_x_grid) {
1983 Yxlabel=im->text_prop[TEXT_PROP_LEGEND].size *2;
1985 if (im->draw_y_grid) {
1986 Xylabel=im->text_prop[TEXT_PROP_LEGEND].size *6;
1992 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
1997 /* Now calculate the total size. Insert some spacing where
1998 desired. im->xorigin and im->yorigin need to correspond
1999 with the lower left corner of the main graph area or, if
2000 this one is not set, the imaginary box surrounding the
2003 /* The legend width cannot yet be determined, as a result we
2004 ** have problems adjusting the image to it. For now, we just
2005 ** forget about it at all; the legend will have to fit in the
2006 ** size already allocated.
2008 im->ximg = Xylabel + Xmain + Xpie + Xspacing;
2009 if (Xmain) im->ximg += Xspacing;
2010 if (Xpie) im->ximg += Xspacing;
2011 im->xorigin = Xspacing + Xylabel;
2012 if (Xtitle > im->ximg) im->ximg = Xtitle;
2014 im->ximg += Xvertical;
2015 im->xorigin += Xvertical;
2019 /* The vertical size is interesting... we need to compare
2020 ** the sum of {Ytitle, Ymain, Yxlabel, Ylegend} with Yvertical
2021 ** however we need to know {Ytitle+Ymain+Yxlabel} in order to
2022 ** start even thinking about Ylegend.
2024 ** Do it in three portions: First calculate the inner part,
2025 ** then do the legend, then adjust the total height of the img.
2028 /* reserve space for main and/or pie */
2029 im->yimg = Ymain + Yxlabel;
2030 if (im->yimg < Ypie) im->yimg = Ypie;
2031 im->yorigin = im->yimg - Yxlabel;
2032 /* reserve space for the title *or* some padding above the graph */
2035 im->yorigin += Ytitle;
2037 im->yimg += Yspacing;
2038 im->yorigin += Yspacing;
2040 /* reserve space for padding below the graph */
2041 im->yimg += Yspacing;
2044 /* Determine where to place the legends onto the image.
2045 ** Adjust im->yimg to match the space requirements.
2047 if(leg_place(im)==-1)
2050 /* last of three steps: check total height of image */
2051 if (im->yimg < Yvertical) im->yimg = Yvertical;
2054 if (Xlegend > im->ximg) {
2056 /* reposition Pie */
2059 /* The pie is placed in the upper right hand corner,
2060 ** just below the title (if any) and with sufficient
2064 im->pie_x = im->ximg - Xspacing - Xpie/2;
2065 im->pie_y = im->yorigin-Ymain+Ypie/2;
2067 im->pie_x = im->ximg/2;
2068 im->pie_y = im->yorigin-Ypie/2;
2074 /* draw that picture thing ... */
2076 graph_paint(image_desc_t *im, char ***calcpr)
2079 int lazy = lazy_check(im);
2081 double PieStart=0.0;
2085 double areazero = 0.0;
2086 enum gf_en stack_gf = GF_PRINT;
2087 graph_desc_t *lastgdes = NULL;
2089 /* if we are lazy and there is nothing to PRINT ... quit now */
2090 if (lazy && im->prt_c==0) return 0;
2092 /* pull the data from the rrd files ... */
2094 if(data_fetch(im)==-1)
2097 /* evaluate VDEF and CDEF operations ... */
2098 if(data_calc(im)==-1)
2101 /* check if we need to draw a piechart */
2102 for(i=0;i<im->gdes_c;i++){
2103 if (im->gdes[i].gf == GF_PART) {
2109 /* calculate and PRINT and GPRINT definitions. We have to do it at
2110 * this point because it will affect the length of the legends
2111 * if there are no graph elements we stop here ...
2112 * if we are lazy, try to quit ...
2114 i=print_calc(im,calcpr);
2116 if(((i==0)&&(piechart==0)) || lazy) return 0;
2118 /* If there's only the pie chart to draw, signal this */
2119 if (i==0) piechart=2;
2121 /* get actual drawing data and find min and max values*/
2122 if(data_proc(im)==-1)
2125 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
2127 if(!im->rigid && ! im->logarithmic)
2128 expand_range(im); /* make sure the upper and lower limit are
2131 /**************************************************************
2132 *** Calculating sizes and locations became a bit confusing ***
2133 *** so I moved this into a separate function. ***
2134 **************************************************************/
2135 if(graph_size_location(im,i,piechart)==-1)
2138 /* the actual graph is created by going through the individual
2139 graph elements and then drawing them */
2141 node=gfx_new_area ( im->canvas,
2145 im->graph_col[GRC_BACK]);
2147 gfx_add_point(node,0, im->yimg);
2149 if (piechart != 2) {
2150 node=gfx_new_area ( im->canvas,
2151 im->xorigin, im->yorigin,
2152 im->xorigin + im->xsize, im->yorigin,
2153 im->xorigin + im->xsize, im->yorigin-im->ysize,
2154 im->graph_col[GRC_CANVAS]);
2156 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2158 if (im->minval > 0.0)
2159 areazero = im->minval;
2160 if (im->maxval < 0.0)
2161 areazero = im->maxval;
2167 pie_part(im,im->graph_col[GRC_CANVAS],im->pie_x,im->pie_y,im->piesize*0.5,0,2*M_PI);
2170 for(i=0;i<im->gdes_c;i++){
2171 switch(im->gdes[i].gf){
2182 for (ii = 0; ii < im->xsize; ii++)
2184 if (!isnan(im->gdes[i].p_data[ii]) &&
2185 im->gdes[i].p_data[ii] > 0.0)
2187 /* generate a tick */
2188 gfx_new_line(im->canvas, im -> xorigin + ii,
2189 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2193 im -> gdes[i].col );
2199 stack_gf = im->gdes[i].gf;
2201 /* fix data points at oo and -oo */
2202 for(ii=0;ii<im->xsize;ii++){
2203 if (isinf(im->gdes[i].p_data[ii])){
2204 if (im->gdes[i].p_data[ii] > 0) {
2205 im->gdes[i].p_data[ii] = im->maxval ;
2207 im->gdes[i].p_data[ii] = im->minval ;
2213 if (im->gdes[i].col != 0x0){
2214 /* GF_LINE and friend */
2215 if(stack_gf == GF_LINE ){
2217 for(ii=1;ii<im->xsize;ii++){
2218 if ( ! isnan(im->gdes[i].p_data[ii-1])
2219 && ! isnan(im->gdes[i].p_data[ii])){
2221 node = gfx_new_line(im->canvas,
2222 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2223 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2224 im->gdes[i].linewidth,
2227 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2236 for(ii=1;ii<im->xsize;ii++){
2238 if ( ! isnan(im->gdes[i].p_data[ii-1])
2239 && ! isnan(im->gdes[i].p_data[ii])){
2242 if (im->gdes[i].gf == GF_STACK) {
2243 ybase = ytr(im,lastgdes->p_data[ii-1]);
2245 ybase = ytr(im,areazero);
2248 node = gfx_new_area(im->canvas,
2249 ii-1+im->xorigin,ybase,
2250 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2251 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2255 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2259 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2260 /* GF_AREA STACK type*/
2261 if (im->gdes[i].gf == GF_STACK ) {
2263 for (iii=ii-1;iii>area_start;iii--){
2264 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2267 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2272 } /* else GF_LINE */
2273 } /* if color != 0x0 */
2274 /* make sure we do not run into trouble when stacking on NaN */
2275 for(ii=0;ii<im->xsize;ii++){
2276 if (isnan(im->gdes[i].p_data[ii])) {
2279 ybase = ytr(im,lastgdes->p_data[ii-1]);
2281 if (isnan(ybase) || !lastgdes ){
2282 ybase = ytr(im,areazero);
2284 im->gdes[i].p_data[ii] = ybase;
2287 lastgdes = &(im->gdes[i]);
2290 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2291 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2293 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2294 pie_part(im,im->gdes[i].col,
2295 im->pie_x,im->pie_y,im->piesize*0.4,
2296 M_PI*2.0*PieStart/100.0,
2297 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2298 PieStart += im->gdes[i].yrule;
2307 /* grid_paint also does the text */
2310 /* the RULES are the last thing to paint ... */
2311 for(i=0;i<im->gdes_c;i++){
2313 switch(im->gdes[i].gf){
2315 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2316 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2318 if(im->gdes[i].yrule >= im->minval
2319 && im->gdes[i].yrule <= im->maxval)
2320 gfx_new_line(im->canvas,
2321 im->xorigin,ytr(im,im->gdes[i].yrule),
2322 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2323 1.0,im->gdes[i].col);
2326 if(im->gdes[i].xrule == 0) { /* fetch variable */
2327 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2329 if(im->gdes[i].xrule >= im->start
2330 && im->gdes[i].xrule <= im->end)
2331 gfx_new_line(im->canvas,
2332 xtr(im,im->gdes[i].xrule),im->yorigin,
2333 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2334 1.0,im->gdes[i].col);
2342 if (strcmp(im->graphfile,"-")==0) {
2344 /* Change translation mode for stdout to BINARY */
2345 _setmode( _fileno( stdout ), O_BINARY );
2349 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2350 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2355 gfx_render (im->canvas,im->ximg,im->yimg,0x0,fo);
2356 if (strcmp(im->graphfile,"-") != 0)
2362 /*****************************************************
2364 *****************************************************/
2367 gdes_alloc(image_desc_t *im){
2369 long def_step = (im->end-im->start)/im->xsize;
2371 if (im->step > def_step) /* step can be increassed ... no decreassed */
2372 def_step = im->step;
2376 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2377 * sizeof(graph_desc_t)))==NULL){
2378 rrd_set_error("realloc graph_descs");
2383 im->gdes[im->gdes_c-1].step=def_step;
2384 im->gdes[im->gdes_c-1].start=im->start;
2385 im->gdes[im->gdes_c-1].end=im->end;
2386 im->gdes[im->gdes_c-1].vname[0]='\0';
2387 im->gdes[im->gdes_c-1].data=NULL;
2388 im->gdes[im->gdes_c-1].ds_namv=NULL;
2389 im->gdes[im->gdes_c-1].data_first=0;
2390 im->gdes[im->gdes_c-1].p_data=NULL;
2391 im->gdes[im->gdes_c-1].rpnp=NULL;
2392 im->gdes[im->gdes_c-1].col = 0x0;
2393 im->gdes[im->gdes_c-1].legend[0]='\0';
2394 im->gdes[im->gdes_c-1].rrd[0]='\0';
2395 im->gdes[im->gdes_c-1].ds=-1;
2396 im->gdes[im->gdes_c-1].p_data=NULL;
2400 /* copies input untill the first unescaped colon is found
2401 or until input ends. backslashes have to be escaped as well */
2403 scan_for_col(char *input, int len, char *output)
2408 input[inp] != ':' &&
2411 if (input[inp] == '\\' &&
2412 input[inp+1] != '\0' &&
2413 (input[inp+1] == '\\' ||
2414 input[inp+1] == ':')){
2415 output[outp++] = input[++inp];
2418 output[outp++] = input[inp];
2421 output[outp] = '\0';
2425 /* Some surgery done on this function, it became ridiculously big.
2427 ** - initializing now in rrd_graph_init()
2428 ** - options parsing now in rrd_graph_options()
2429 ** - script parsing now in rrd_graph_script()
2432 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2436 rrd_graph_init(&im);
2438 rrd_graph_options(argc,argv,&im);
2439 if (rrd_test_error()) return -1;
2441 if (strlen(argv[optind])>=MAXPATH) {
2442 rrd_set_error("filename (including path) too long");
2445 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2446 im.graphfile[MAXPATH-1]='\0';
2448 rrd_graph_script(argc,argv,&im);
2449 if (rrd_test_error()) return -1;
2451 /* Everything is now read and the actual work can start */
2454 if (graph_paint(&im,prdata)==-1){
2459 /* The image is generated and needs to be output.
2460 ** Also, if needed, print a line with information about the image.
2468 /* maybe prdata is not allocated yet ... lets do it now */
2469 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2470 rrd_set_error("malloc imginfo");
2474 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2476 rrd_set_error("malloc imginfo");
2479 filename=im.graphfile+strlen(im.graphfile);
2480 while(filename > im.graphfile) {
2481 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2485 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.canvas->zoom*im.ximg),(long)(im.canvas->zoom*im.yimg));
2492 rrd_graph_init(image_desc_t *im)
2496 im->xlab_user.minsec = -1;
2502 im->ylegend[0] = '\0';
2503 im->title[0] = '\0';
2506 im->unitsexponent= 9999;
2511 im->logarithmic = 0;
2512 im->ygridstep = DNAN;
2513 im->draw_x_grid = 1;
2514 im->draw_y_grid = 1;
2519 im->canvas = gfx_new_canvas();
2521 for(i=0;i<DIM(graph_col);i++)
2522 im->graph_col[i]=graph_col[i];
2524 for(i=0;i<DIM(text_prop);i++){
2525 im->text_prop[i].size = text_prop[i].size;
2526 im->text_prop[i].font = text_prop[i].font;
2531 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2534 char *parsetime_error = NULL;
2535 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2536 time_t start_tmp=0,end_tmp=0;
2538 struct time_value start_tv, end_tv;
2541 parsetime("end-24h", &start_tv);
2542 parsetime("now", &end_tv);
2545 static struct option long_options[] =
2547 {"start", required_argument, 0, 's'},
2548 {"end", required_argument, 0, 'e'},
2549 {"x-grid", required_argument, 0, 'x'},
2550 {"y-grid", required_argument, 0, 'y'},
2551 {"vertical-label",required_argument,0,'v'},
2552 {"width", required_argument, 0, 'w'},
2553 {"height", required_argument, 0, 'h'},
2554 {"interlaced", no_argument, 0, 'i'},
2555 {"upper-limit",required_argument, 0, 'u'},
2556 {"lower-limit",required_argument, 0, 'l'},
2557 {"rigid", no_argument, 0, 'r'},
2558 {"base", required_argument, 0, 'b'},
2559 {"logarithmic",no_argument, 0, 'o'},
2560 {"color", required_argument, 0, 'c'},
2561 {"font", required_argument, 0, 'n'},
2562 {"title", required_argument, 0, 't'},
2563 {"imginfo", required_argument, 0, 'f'},
2564 {"imgformat", required_argument, 0, 'a'},
2565 {"lazy", no_argument, 0, 'z'},
2566 {"zoom", required_argument, 0, 'm'},
2567 {"no-legend", no_argument, 0, 'g'},
2568 {"alt-y-grid", no_argument, 0, 257 },
2569 {"alt-autoscale", no_argument, 0, 258 },
2570 {"alt-autoscale-max", no_argument, 0, 259 },
2571 {"units-exponent",required_argument, 0, 260},
2572 {"step", required_argument, 0, 261},
2574 int option_index = 0;
2578 opt = getopt_long(argc, argv,
2579 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2580 long_options, &option_index);
2587 im->extra_flags |= ALTYGRID;
2590 im->extra_flags |= ALTAUTOSCALE;
2593 im->extra_flags |= ALTAUTOSCALE_MAX;
2596 im->extra_flags |= NOLEGEND;
2599 im->unitsexponent = atoi(optarg);
2602 im->step = atoi(optarg);
2605 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2606 rrd_set_error( "start time: %s", parsetime_error );
2611 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2612 rrd_set_error( "end time: %s", parsetime_error );
2617 if(strcmp(optarg,"none") == 0){
2623 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2625 &im->xlab_user.gridst,
2627 &im->xlab_user.mgridst,
2629 &im->xlab_user.labst,
2630 &im->xlab_user.precis,
2631 &stroff) == 7 && stroff != 0){
2632 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2633 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2634 rrd_set_error("unknown keyword %s",scan_gtm);
2636 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2637 rrd_set_error("unknown keyword %s",scan_mtm);
2639 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2640 rrd_set_error("unknown keyword %s",scan_ltm);
2643 im->xlab_user.minsec = 1;
2644 im->xlab_user.stst = im->xlab_form;
2646 rrd_set_error("invalid x-grid format");
2652 if(strcmp(optarg,"none") == 0){
2660 &im->ylabfact) == 2) {
2661 if(im->ygridstep<=0){
2662 rrd_set_error("grid step must be > 0");
2664 } else if (im->ylabfact < 1){
2665 rrd_set_error("label factor must be > 0");
2669 rrd_set_error("invalid y-grid format");
2674 strncpy(im->ylegend,optarg,150);
2675 im->ylegend[150]='\0';
2678 im->maxval = atof(optarg);
2681 im->minval = atof(optarg);
2684 im->base = atol(optarg);
2685 if(im->base != 1024 && im->base != 1000 ){
2686 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2691 long_tmp = atol(optarg);
2692 if (long_tmp < 10) {
2693 rrd_set_error("width below 10 pixels");
2696 im->xsize = long_tmp;
2699 long_tmp = atol(optarg);
2700 if (long_tmp < 10) {
2701 rrd_set_error("height below 10 pixels");
2704 im->ysize = long_tmp;
2707 im->canvas->interlaced = 1;
2713 im->imginfo = optarg;
2716 if((im->canvas->imgformat = if_conv(optarg)) == -1) {
2717 rrd_set_error("unsupported graphics format '%s'",optarg);
2725 im->logarithmic = 1;
2726 if (isnan(im->minval))
2732 col_nam,&color) == 2){
2734 if((ci=grc_conv(col_nam)) != -1){
2735 im->graph_col[ci]=color;
2737 rrd_set_error("invalid color name '%s'",col_nam);
2740 rrd_set_error("invalid color def format");
2745 /* originally this used char *prop = "" and
2746 ** char *font = "dummy" however this results
2747 ** in a SEG fault, at least on RH7.1
2749 ** The current implementation isn't proper
2750 ** either, font is never freed and prop uses
2751 ** a fixed width string
2760 prop,&size,font) == 3){
2762 if((sindex=text_prop_conv(prop)) != -1){
2763 im->text_prop[sindex].size=size;
2764 im->text_prop[sindex].font=font;
2765 if (sindex==0) { /* the default */
2766 im->text_prop[TEXT_PROP_TITLE].size=size;
2767 im->text_prop[TEXT_PROP_TITLE].font=font;
2768 im->text_prop[TEXT_PROP_AXIS].size=size;
2769 im->text_prop[TEXT_PROP_AXIS].font=font;
2770 im->text_prop[TEXT_PROP_UNIT].size=size;
2771 im->text_prop[TEXT_PROP_UNIT].font=font;
2772 im->text_prop[TEXT_PROP_LEGEND].size=size;
2773 im->text_prop[TEXT_PROP_LEGEND].font=font;
2776 rrd_set_error("invalid fonttag '%s'",prop);
2780 rrd_set_error("invalid text property format");
2786 im->canvas->zoom = atof(optarg);
2787 if (im->canvas->zoom <= 0.0) {
2788 rrd_set_error("zoom factor must be > 0");
2793 strncpy(im->title,optarg,150);
2794 im->title[150]='\0';
2799 rrd_set_error("unknown option '%c'", optopt);
2801 rrd_set_error("unknown option '%s'",argv[optind-1]);
2806 if (optind >= argc) {
2807 rrd_set_error("missing filename");
2811 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2812 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2816 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2817 /* error string is set in parsetime.c */
2821 if (start_tmp < 3600*24*365*10){
2822 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2826 if (end_tmp < start_tmp) {
2827 rrd_set_error("start (%ld) should be less than end (%ld)",
2828 start_tmp, end_tmp);
2832 im->start = start_tmp;
2837 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2841 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2843 for (i=optind+1;i<argc;i++) {
2848 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2853 /* Each command is one element from *argv[], we call this "line".
2855 ** Each command defines the most current gdes inside struct im.
2856 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2859 gdp=&im->gdes[im->gdes_c-1];
2862 /* function:newvname=string[:ds-name:CF] for xDEF
2863 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2864 ** function:vname#color[:num[:string]] for TICK
2865 ** function:vname-or-num#color[:string] for xRULE,PART
2866 ** function:vname:CF:string for xPRINT
2867 ** function:string for COMMENT
2871 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2873 rrd_set_error("Cannot parse function in line: %s",line);
2877 if(sscanf(funcname,"LINE%lf",&linewidth)){
2878 im->gdes[im->gdes_c-1].gf = GF_LINE;
2879 im->gdes[im->gdes_c-1].linewidth = linewidth;
2881 if ((gdp->gf=gf_conv(funcname))==-1) {
2882 rrd_set_error("'%s' is not a valid function name",funcname);
2888 /* If the error string is set, we exit at the end of the switch */
2891 if (rrd_graph_legend(gdp,&line[argstart])==0)
2892 rrd_set_error("Cannot parse comment in line: %s",line);
2898 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2899 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2901 rrd_set_error("Cannot parse name or num in line: %s",line);
2908 } else if (!rrd_graph_check_vname(im,vname,line)) {
2912 } else break; /* exit due to wrong vname */
2913 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2915 if (strlen(&line[argstart])!=0) {
2916 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2917 rrd_set_error("Cannot parse comment in line: %s",line);
2922 rrd_set_error("STACK must follow another graphing element");
2930 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2932 rrd_set_error("Cannot parse vname in line: %s",line);
2933 else if (rrd_graph_check_vname(im,vname,line))
2934 rrd_set_error("Undefined vname '%s' in line: %s",line);
2936 k=rrd_graph_color(im,&line[argstart],line,1);
2937 if (rrd_test_error()) break;
2938 argstart=argstart+j+k;
2939 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2941 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2944 if (strlen(&line[argstart])!=0)
2945 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2946 rrd_set_error("Cannot parse legend in line: %s",line);
2952 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2954 rrd_set_error("Cannot parse vname in line: '%s'",line);
2958 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2960 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2962 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2963 #define VIDX im->gdes[gdp->vidx]
2965 case -1: /* looks CF but is not really CF */
2966 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2968 case 0: /* CF present and correct */
2969 if (VIDX.gf == GF_VDEF)
2970 rrd_set_error("Don't use CF when printing VDEF");
2973 case 1: /* CF not present */
2974 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2975 else rrd_set_error("Printing DEF or CDEF needs CF");
2978 rrd_set_error("Oops, bug in GPRINT scanning");
2981 if (rrd_test_error()) break;
2983 if (strlen(&line[argstart])!=0) {
2984 if (rrd_graph_legend(gdp,&line[argstart])==0)
2985 rrd_set_error("Cannot parse legend in line: %s",line);
2986 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2987 strcpy(gdp->format, gdp->legend);
2993 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2995 rrd_set_error("Could not parse line: %s",line);
2998 if (find_var(im,gdp->vname)!=-1) {
2999 rrd_set_error("Variable '%s' in line '%s' already in use\n",
3006 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
3008 sscanf(&line[argstart],
3009 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
3010 gdp->ds_nam, symname, &j, &k);
3011 if ((j==0)||(k!=0)) {
3012 rrd_set_error("Cannot parse DS or CF in '%s'",line);
3015 rrd_graph_check_CF(im,symname,line);
3019 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
3021 rrd_set_error("Cannot parse vname in line '%s'",line);
3025 if (rrd_graph_check_vname(im,vname,line)) return;
3026 if ( im->gdes[gdp->vidx].gf != GF_DEF
3027 && im->gdes[gdp->vidx].gf != GF_CDEF) {
3028 rrd_set_error("variable '%s' not DEF nor "
3029 "CDEF in VDEF '%s'", vname,gdp->vname);
3032 vdef_parse(gdp,&line[argstart+strstart]);
3035 if (strstr(&line[argstart],":")!=NULL) {
3036 rrd_set_error("Error in RPN, line: %s",line);
3039 if ((gdp->rpnp = rpn_parse(
3044 rrd_set_error("invalid rpn expression in: %s",line);
3049 default: rrd_set_error("Big oops");
3051 if (rrd_test_error()) {
3058 rrd_set_error("can't make a graph without contents");
3059 im_free(im); /* ??? is this set ??? */
3064 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
3066 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
3067 rrd_set_error("Unknown variable '%s' in %s",varname,err);
3073 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
3076 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
3078 color=strstr(var,"#");
3081 rrd_set_error("Found no color in %s",err);
3090 rest=strstr(color,":");
3098 sscanf(color,"#%6lx%n",&col,&n);
3099 col = (col << 8) + 0xff /* shift left by 8 */;
3100 if (n!=7) rrd_set_error("Color problem in %s",err);
3103 sscanf(color,"#%8lx%n",&col,&n);
3106 rrd_set_error("Color problem in %s",err);
3108 if (rrd_test_error()) return 0;
3114 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
3116 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
3117 rrd_set_error("Unknown CF '%s' in %s",symname,err);
3123 rrd_graph_legend(graph_desc_t *gdp, char *line)
3127 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3129 return (strlen(&line[i])==0);
3133 int bad_format(char *fmt) {
3138 while (*ptr != '\0') {
3139 if (*ptr == '%') {ptr++;
3140 if (*ptr == '\0') return 1;
3141 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3144 if (*ptr == '\0') return 1;
3148 if (*ptr == '\0') return 1;
3149 if (*ptr == 'e' || *ptr == 'f') {
3151 } else { return 1; }
3153 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3162 vdef_parse(gdes,str)
3163 struct graph_desc_t *gdes;
3166 /* A VDEF currently is either "func" or "param,func"
3167 * so the parsing is rather simple. Change if needed.
3174 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3175 if (n==strlen(str)) { /* matched */
3179 sscanf(str,"%29[A-Z]%n",func,&n);
3180 if (n==strlen(str)) { /* matched */
3183 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3190 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3191 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3192 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3193 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3194 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3195 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3196 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3198 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3205 switch (gdes->vf.op) {
3207 if (isnan(param)) { /* no parameter given */
3208 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3214 if (param>=0.0 && param<=100.0) {
3215 gdes->vf.param = param;
3216 gdes->vf.val = DNAN; /* undefined */
3217 gdes->vf.when = 0; /* undefined */
3219 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3233 gdes->vf.param = DNAN;
3234 gdes->vf.val = DNAN;
3237 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3252 graph_desc_t *src,*dst;
3256 dst = &im->gdes[gdi];
3257 src = &im->gdes[dst->vidx];
3258 data = src->data + src->ds;
3259 steps = (src->end - src->start) / src->step;
3262 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3269 switch (dst->vf.op) {
3270 case VDEF_PERCENT: {
3271 rrd_value_t * array;
3275 if ((array = malloc(steps*sizeof(double)))==NULL) {
3276 rrd_set_error("malloc VDEV_PERCENT");
3279 for (step=0;step < steps; step++) {
3280 array[step]=data[step*src->ds_cnt];
3282 qsort(array,step,sizeof(double),vdef_percent_compar);
3284 field = (steps-1)*dst->vf.param/100;
3285 dst->vf.val = array[field];
3286 dst->vf.when = 0; /* no time component */
3288 for(step=0;step<steps;step++)
3289 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3295 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3296 if (step == steps) {
3300 dst->vf.val = data[step*src->ds_cnt];
3301 dst->vf.when = src->start + (step+1)*src->step;
3303 while (step != steps) {
3304 if (finite(data[step*src->ds_cnt])) {
3305 if (data[step*src->ds_cnt] > dst->vf.val) {
3306 dst->vf.val = data[step*src->ds_cnt];
3307 dst->vf.when = src->start + (step+1)*src->step;
3314 case VDEF_AVERAGE: {
3317 for (step=0;step<steps;step++) {
3318 if (finite(data[step*src->ds_cnt])) {
3319 sum += data[step*src->ds_cnt];
3324 if (dst->vf.op == VDEF_TOTAL) {
3325 dst->vf.val = sum*src->step;
3326 dst->vf.when = cnt*src->step; /* not really "when" */
3328 dst->vf.val = sum/cnt;
3329 dst->vf.when = 0; /* no time component */
3339 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3340 if (step == steps) {
3344 dst->vf.val = data[step*src->ds_cnt];
3345 dst->vf.when = src->start + (step+1)*src->step;
3347 while (step != steps) {
3348 if (finite(data[step*src->ds_cnt])) {
3349 if (data[step*src->ds_cnt] < dst->vf.val) {
3350 dst->vf.val = data[step*src->ds_cnt];
3351 dst->vf.when = src->start + (step+1)*src->step;
3358 /* The time value returned here is one step before the
3359 * actual time value. This is the start of the first
3363 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3364 if (step == steps) { /* all entries were NaN */
3368 dst->vf.val = data[step*src->ds_cnt];
3369 dst->vf.when = src->start + step*src->step;
3373 /* The time value returned here is the
3374 * actual time value. This is the end of the last
3378 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3379 if (step < 0) { /* all entries were NaN */
3383 dst->vf.val = data[step*src->ds_cnt];
3384 dst->vf.when = src->start + (step+1)*src->step;
3391 /* NaN < -INF < finite_values < INF */
3393 vdef_percent_compar(a,b)
3396 /* Equality is not returned; this doesn't hurt except
3397 * (maybe) for a little performance.
3400 /* First catch NaN values. They are smallest */
3401 if (isnan( *(double *)a )) return -1;
3402 if (isnan( *(double *)b )) return 1;
3404 /* NaN doesn't reach this part so INF and -INF are extremes.
3405 * The sign from isinf() is compatible with the sign we return
3407 if (isinf( *(double *)a )) return isinf( *(double *)a );
3408 if (isinf( *(double *)b )) return isinf( *(double *)b );
3410 /* If we reach this, both values must be finite */
3411 if ( *(double *)a < *(double *)b ) return -1; else return 1;