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){
189 enum tmt_en tmt_conv(char *string){
191 conv_if(SECOND,TMT_SECOND)
192 conv_if(MINUTE,TMT_MINUTE)
193 conv_if(HOUR,TMT_HOUR)
195 conv_if(WEEK,TMT_WEEK)
196 conv_if(MONTH,TMT_MONTH)
197 conv_if(YEAR,TMT_YEAR)
201 enum grc_en grc_conv(char *string){
203 conv_if(BACK,GRC_BACK)
204 conv_if(CANVAS,GRC_CANVAS)
205 conv_if(SHADEA,GRC_SHADEA)
206 conv_if(SHADEB,GRC_SHADEB)
207 conv_if(GRID,GRC_GRID)
208 conv_if(MGRID,GRC_MGRID)
209 conv_if(FONT,GRC_FONT)
210 conv_if(FRAME,GRC_FRAME)
211 conv_if(ARROW,GRC_ARROW)
216 enum text_prop_en text_prop_conv(char *string){
218 conv_if(DEFAULT,TEXT_PROP_DEFAULT)
219 conv_if(TITLE,TEXT_PROP_TITLE)
220 conv_if(AXIS,TEXT_PROP_AXIS)
221 conv_if(UNIT,TEXT_PROP_UNIT)
222 conv_if(LEGEND,TEXT_PROP_LEGEND)
232 im_free(image_desc_t *im)
235 if (im == NULL) return 0;
236 for(i=0;i<im->gdes_c;i++){
237 if (im->gdes[i].data_first){
238 /* careful here, because a single pointer can occur several times */
239 free (im->gdes[i].data);
240 if (im->gdes[i].ds_namv){
241 for (ii=0;ii<im->gdes[i].ds_cnt;ii++)
242 free(im->gdes[i].ds_namv[ii]);
243 free(im->gdes[i].ds_namv);
246 free (im->gdes[i].p_data);
247 free (im->gdes[i].rpnp);
253 /* find SI magnitude symbol for the given number*/
256 image_desc_t *im, /* image description */
263 char *symbol[] = {"a", /* 10e-18 Atto */
264 "f", /* 10e-15 Femto */
265 "p", /* 10e-12 Pico */
266 "n", /* 10e-9 Nano */
267 "u", /* 10e-6 Micro */
268 "m", /* 10e-3 Milli */
273 "T", /* 10e12 Tera */
274 "P", /* 10e15 Peta */
280 if (*value == 0.0 || isnan(*value) ) {
284 sindex = floor(log(fabs(*value))/log((double)im->base));
285 *magfact = pow((double)im->base, (double)sindex);
286 (*value) /= (*magfact);
288 if ( sindex <= symbcenter && sindex >= -symbcenter) {
289 (*symb_ptr) = symbol[sindex+symbcenter];
297 /* find SI magnitude symbol for the numbers on the y-axis*/
300 image_desc_t *im /* image description */
304 char symbol[] = {'a', /* 10e-18 Atto */
305 'f', /* 10e-15 Femto */
306 'p', /* 10e-12 Pico */
307 'n', /* 10e-9 Nano */
308 'u', /* 10e-6 Micro */
309 'm', /* 10e-3 Milli */
314 'T', /* 10e12 Tera */
315 'P', /* 10e15 Peta */
321 if (im->unitsexponent != 9999) {
322 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
323 digits = floor(im->unitsexponent / 3);
325 digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base));
327 im->magfact = pow((double)im->base , digits);
330 printf("digits %6.3f im->magfact %6.3f\n",digits,im->magfact);
333 if ( ((digits+symbcenter) < sizeof(symbol)) &&
334 ((digits+symbcenter) >= 0) )
335 im->symbol = symbol[(int)digits+symbcenter];
340 /* move min and max values around to become sensible */
343 expand_range(image_desc_t *im)
345 double sensiblevalues[] ={1000.0,900.0,800.0,750.0,700.0,
346 600.0,500.0,400.0,300.0,250.0,
347 200.0,125.0,100.0,90.0,80.0,
348 75.0,70.0,60.0,50.0,40.0,30.0,
349 25.0,20.0,10.0,9.0,8.0,
350 7.0,6.0,5.0,4.0,3.5,3.0,
351 2.5,2.0,1.8,1.5,1.2,1.0,
352 0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0.0,-1};
354 double scaled_min,scaled_max;
361 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
362 im->minval,im->maxval,im->magfact);
365 if (isnan(im->ygridstep)){
366 if(im->extra_flags & ALTAUTOSCALE) {
367 /* measure the amplitude of the function. Make sure that
368 graph boundaries are slightly higher then max/min vals
369 so we can see amplitude on the graph */
372 delt = im->maxval - im->minval;
374 fact = 2.0 * pow(10.0,
375 floor(log10(max(fabs(im->minval), fabs(im->maxval)))) - 2);
377 adj = (fact - delt) * 0.55;
379 printf("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n", im->minval, im->maxval, delt, fact, adj);
385 else if(im->extra_flags & ALTAUTOSCALE_MAX) {
386 /* measure the amplitude of the function. Make sure that
387 graph boundaries are slightly higher than max vals
388 so we can see amplitude on the graph */
389 adj = (im->maxval - im->minval) * 0.1;
393 scaled_min = im->minval / im->magfact;
394 scaled_max = im->maxval / im->magfact;
396 for (i=1; sensiblevalues[i] > 0; i++){
397 if (sensiblevalues[i-1]>=scaled_min &&
398 sensiblevalues[i]<=scaled_min)
399 im->minval = sensiblevalues[i]*(im->magfact);
401 if (-sensiblevalues[i-1]<=scaled_min &&
402 -sensiblevalues[i]>=scaled_min)
403 im->minval = -sensiblevalues[i-1]*(im->magfact);
405 if (sensiblevalues[i-1] >= scaled_max &&
406 sensiblevalues[i] <= scaled_max)
407 im->maxval = sensiblevalues[i-1]*(im->magfact);
409 if (-sensiblevalues[i-1]<=scaled_max &&
410 -sensiblevalues[i] >=scaled_max)
411 im->maxval = -sensiblevalues[i]*(im->magfact);
415 /* adjust min and max to the grid definition if there is one */
416 im->minval = (double)im->ylabfact * im->ygridstep *
417 floor(im->minval / ((double)im->ylabfact * im->ygridstep));
418 im->maxval = (double)im->ylabfact * im->ygridstep *
419 ceil(im->maxval /( (double)im->ylabfact * im->ygridstep));
423 fprintf(stderr,"SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
424 im->minval,im->maxval,im->magfact);
429 /* reduce data reimplementation by Alex */
433 enum cf_en cf, /* which consolidation function ?*/
434 unsigned long cur_step, /* step the data currently is in */
435 time_t *start, /* start, end and step as requested ... */
436 time_t *end, /* ... by the application will be ... */
437 unsigned long *step, /* ... adjusted to represent reality */
438 unsigned long *ds_cnt, /* number of data sources in file */
439 rrd_value_t **data) /* two dimensional array containing the data */
441 int i,reduce_factor = ceil((double)(*step) / (double)cur_step);
442 unsigned long col,dst_row,row_cnt,start_offset,end_offset,skiprows=0;
443 rrd_value_t *srcptr,*dstptr;
445 (*step) = cur_step*reduce_factor; /* set new step size for reduced data */
448 row_cnt = ((*end)-(*start))/cur_step;
454 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
455 row_cnt,reduce_factor,*start,*end,cur_step);
456 for (col=0;col<row_cnt;col++) {
457 printf("time %10lu: ",*start+(col+1)*cur_step);
458 for (i=0;i<*ds_cnt;i++)
459 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
464 /* We have to combine [reduce_factor] rows of the source
465 ** into one row for the destination. Doing this we also
466 ** need to take care to combine the correct rows. First
467 ** alter the start and end time so that they are multiples
468 ** of the new step time. We cannot reduce the amount of
469 ** time so we have to move the end towards the future and
470 ** the start towards the past.
472 end_offset = (*end) % (*step);
473 start_offset = (*start) % (*step);
475 /* If there is a start offset (which cannot be more than
476 ** one destination row), skip the appropriate number of
477 ** source rows and one destination row. The appropriate
478 ** number is what we do know (start_offset/cur_step) of
479 ** the new interval (*step/cur_step aka reduce_factor).
482 printf("start_offset: %lu end_offset: %lu\n",start_offset,end_offset);
483 printf("row_cnt before: %lu\n",row_cnt);
486 (*start) = (*start)-start_offset;
487 skiprows=reduce_factor-start_offset/cur_step;
488 srcptr+=skiprows* *ds_cnt;
489 for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
493 printf("row_cnt between: %lu\n",row_cnt);
496 /* At the end we have some rows that are not going to be
497 ** used, the amount is end_offset/cur_step
500 (*end) = (*end)-end_offset+(*step);
501 skiprows = end_offset/cur_step;
505 printf("row_cnt after: %lu\n",row_cnt);
508 /* Sanity check: row_cnt should be multiple of reduce_factor */
509 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
511 if (row_cnt%reduce_factor) {
512 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
513 row_cnt,reduce_factor);
514 printf("BUG in reduce_data()\n");
518 /* Now combine reduce_factor intervals at a time
519 ** into one interval for the destination.
522 for (dst_row=0;row_cnt>=reduce_factor;dst_row++) {
523 for (col=0;col<(*ds_cnt);col++) {
524 rrd_value_t newval=DNAN;
525 unsigned long validval=0;
527 for (i=0;i<reduce_factor;i++) {
528 if (isnan(srcptr[i*(*ds_cnt)+col])) {
532 if (isnan(newval)) newval = srcptr[i*(*ds_cnt)+col];
540 newval += srcptr[i*(*ds_cnt)+col];
543 newval = min (newval,srcptr[i*(*ds_cnt)+col]);
546 /* an interval contains a failure if any subintervals contained a failure */
548 newval = max (newval,srcptr[i*(*ds_cnt)+col]);
551 newval = srcptr[i*(*ds_cnt)+col];
556 if (validval == 0){newval = DNAN;} else{
574 srcptr+=(*ds_cnt)*reduce_factor;
575 row_cnt-=reduce_factor;
577 /* If we had to alter the endtime, we didn't have enough
578 ** source rows to fill the last row. Fill it with NaN.
580 if (end_offset) for (col=0;col<(*ds_cnt);col++) *dstptr++ = DNAN;
582 row_cnt = ((*end)-(*start))/ *step;
584 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
585 row_cnt,*start,*end,*step);
586 for (col=0;col<row_cnt;col++) {
587 printf("time %10lu: ",*start+(col+1)*(*step));
588 for (i=0;i<*ds_cnt;i++)
589 printf(" %8.2e",srcptr[*ds_cnt*col+i]);
596 /* get the data required for the graphs from the
600 data_fetch( image_desc_t *im )
604 /* pull the data from the log files ... */
605 for (i=0;i<im->gdes_c;i++){
606 /* only GF_DEF elements fetch data */
607 if (im->gdes[i].gf != GF_DEF)
611 /* do we have it already ?*/
612 for (ii=0;ii<i;ii++){
613 if (im->gdes[ii].gf != GF_DEF)
615 if((strcmp(im->gdes[i].rrd,im->gdes[ii].rrd) == 0)
616 && (im->gdes[i].cf == im->gdes[ii].cf)){
617 /* OK the data it is here already ...
618 * we just copy the header portion */
619 im->gdes[i].start = im->gdes[ii].start;
620 im->gdes[i].end = im->gdes[ii].end;
621 im->gdes[i].step = im->gdes[ii].step;
622 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
623 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
624 im->gdes[i].data = im->gdes[ii].data;
625 im->gdes[i].data_first = 0;
632 unsigned long ft_step = im->gdes[i].step ;
634 if((rrd_fetch_fn(im->gdes[i].rrd,
640 &im->gdes[i].ds_namv,
641 &im->gdes[i].data)) == -1){
644 im->gdes[i].data_first = 1;
646 if (ft_step < im->gdes[i].step) {
647 reduce_data(im->gdes[i].cf,
655 im->gdes[i].step = ft_step;
659 /* lets see if the required data source is realy there */
660 for(ii=0;ii<im->gdes[i].ds_cnt;ii++){
661 if(strcmp(im->gdes[i].ds_namv[ii],im->gdes[i].ds_nam) == 0){
664 if (im->gdes[i].ds== -1){
665 rrd_set_error("No DS called '%s' in '%s'",
666 im->gdes[i].ds_nam,im->gdes[i].rrd);
674 /* evaluate the expressions in the CDEF functions */
676 /*************************************************************
678 *************************************************************/
681 find_var_wrapper(void *arg1, char *key)
683 return find_var((image_desc_t *) arg1, key);
686 /* find gdes containing var*/
688 find_var(image_desc_t *im, char *key){
690 for(ii=0;ii<im->gdes_c-1;ii++){
691 if((im->gdes[ii].gf == GF_DEF
692 || im->gdes[ii].gf == GF_VDEF
693 || im->gdes[ii].gf == GF_CDEF)
694 && (strcmp(im->gdes[ii].vname,key) == 0)){
701 /* find the largest common denominator for all the numbers
702 in the 0 terminated num array */
707 for (i=0;num[i+1]!=0;i++){
709 rest=num[i] % num[i+1];
710 num[i]=num[i+1]; num[i+1]=rest;
714 /* return i==0?num[i]:num[i-1]; */
718 /* run the rpn calculator on all the VDEF and CDEF arguments */
720 data_calc( image_desc_t *im){
724 long *steparray, rpi;
729 rpnstack_init(&rpnstack);
731 for (gdi=0;gdi<im->gdes_c;gdi++){
732 /* Look for GF_VDEF and GF_CDEF in the same loop,
733 * so CDEFs can use VDEFs and vice versa
735 switch (im->gdes[gdi].gf) {
737 /* A VDEF has no DS. This also signals other parts
738 * of rrdtool that this is a VDEF value, not a CDEF.
740 im->gdes[gdi].ds_cnt = 0;
741 if (vdef_calc(im,gdi)) {
742 rrd_set_error("Error processing VDEF '%s'"
745 rpnstack_free(&rpnstack);
750 im->gdes[gdi].ds_cnt = 1;
751 im->gdes[gdi].ds = 0;
752 im->gdes[gdi].data_first = 1;
753 im->gdes[gdi].start = 0;
754 im->gdes[gdi].end = 0;
759 /* Find the variables in the expression.
760 * - VDEF variables are substituted by their values
761 * and the opcode is changed into OP_NUMBER.
762 * - CDEF variables are analized for their step size,
763 * the lowest common denominator of all the step
764 * sizes of the data sources involved is calculated
765 * and the resulting number is the step size for the
766 * resulting data source.
768 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
769 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
770 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
771 if (im->gdes[ptr].ds_cnt == 0) {
773 printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
775 im->gdes[ptr].vname);
776 printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
778 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
779 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
781 if ((steparray = rrd_realloc(steparray, (++stepcnt+1)*sizeof(*steparray)))==NULL){
782 rrd_set_error("realloc steparray");
783 rpnstack_free(&rpnstack);
787 steparray[stepcnt-1] = im->gdes[ptr].step;
789 /* adjust start and end of cdef (gdi) so
790 * that it runs from the latest start point
791 * to the earliest endpoint of any of the
792 * rras involved (ptr)
794 if(im->gdes[gdi].start < im->gdes[ptr].start)
795 im->gdes[gdi].start = im->gdes[ptr].start;
797 if(im->gdes[gdi].end == 0 ||
798 im->gdes[gdi].end > im->gdes[ptr].end)
799 im->gdes[gdi].end = im->gdes[ptr].end;
801 /* store pointer to the first element of
802 * the rra providing data for variable,
803 * further save step size and data source
806 im->gdes[gdi].rpnp[rpi].data = im->gdes[ptr].data + im->gdes[ptr].ds;
807 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
808 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
810 /* backoff the *.data ptr; this is done so
811 * rpncalc() function doesn't have to treat
812 * the first case differently
814 } /* if ds_cnt != 0 */
815 } /* if OP_VARIABLE */
816 } /* loop through all rpi */
818 /* move the data pointers to the correct period */
819 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
820 if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE){
821 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
822 if(im->gdes[gdi].start > im->gdes[ptr].start) {
823 im->gdes[gdi].rpnp[rpi].data += im->gdes[gdi].rpnp[rpi].ds_cnt;
829 if(steparray == NULL){
830 rrd_set_error("rpn expressions without DEF"
831 " or CDEF variables are not supported");
832 rpnstack_free(&rpnstack);
835 steparray[stepcnt]=0;
836 /* Now find the resulting step. All steps in all
837 * used RRAs have to be visited
839 im->gdes[gdi].step = lcd(steparray);
841 if((im->gdes[gdi].data = malloc((
842 (im->gdes[gdi].end-im->gdes[gdi].start)
843 / im->gdes[gdi].step)
844 * sizeof(double)))==NULL){
845 rrd_set_error("malloc im->gdes[gdi].data");
846 rpnstack_free(&rpnstack);
850 /* Step through the new cdef results array and
851 * calculate the values
853 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
854 now<=im->gdes[gdi].end;
855 now += im->gdes[gdi].step)
857 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
859 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
860 * in this case we are advancing by timesteps;
861 * we use the fact that time_t is a synonym for long
863 if (rpn_calc(rpnp,&rpnstack,(long) now,
864 im->gdes[gdi].data,++dataidx) == -1) {
865 /* rpn_calc sets the error string */
866 rpnstack_free(&rpnstack);
869 } /* enumerate over time steps within a CDEF */
874 } /* enumerate over CDEFs */
875 rpnstack_free(&rpnstack);
879 /* massage data so, that we get one value for each x coordinate in the graph */
881 data_proc( image_desc_t *im ){
883 double pixstep = (double)(im->end-im->start)
884 /(double)im->xsize; /* how much time
885 passes in one pixel */
887 double minval=DNAN,maxval=DNAN;
889 unsigned long gr_time;
891 /* memory for the processed data */
892 for(i=0;i<im->gdes_c;i++){
893 if((im->gdes[i].gf==GF_LINE) ||
894 (im->gdes[i].gf==GF_AREA) ||
895 (im->gdes[i].gf==GF_TICK) ||
896 (im->gdes[i].gf==GF_STACK)){
897 if((im->gdes[i].p_data = malloc((im->xsize +1)
898 * sizeof(rrd_value_t)))==NULL){
899 rrd_set_error("malloc data_proc");
905 for(i=0;i<im->xsize;i++){
907 gr_time = im->start+pixstep*i; /* time of the
911 for(ii=0;ii<im->gdes_c;ii++){
913 switch(im->gdes[ii].gf){
919 vidx = im->gdes[ii].vidx;
923 ((unsigned long)floor(
924 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
926 ) *im->gdes[vidx].ds_cnt
929 if (! isnan(value)) {
931 im->gdes[ii].p_data[i] = paintval;
932 /* GF_TICK: the data values are not relevant for min and max */
933 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
934 if (isnan(minval) || paintval < minval)
936 if (isnan(maxval) || paintval > maxval)
940 im->gdes[ii].p_data[i] = DNAN;
957 /* if min or max have not been asigned a value this is because
958 there was no data in the graph ... this is not good ...
959 lets set these to dummy values then ... */
961 if (isnan(minval)) minval = 0.0;
962 if (isnan(maxval)) maxval = 1.0;
964 /* adjust min and max values */
965 if (isnan(im->minval)
966 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
967 && im->minval > minval))
969 if (isnan(im->maxval)
971 && im->maxval < maxval)){
973 im->maxval = maxval * 1.1;
977 /* make sure min and max are not equal */
978 if (im->minval == im->maxval) {
980 if (! im->logarithmic) {
984 /* make sure min and max are not both zero */
985 if (im->maxval == 0.0) {
995 /* identify the point where the first gridline, label ... gets placed */
999 time_t start, /* what is the initial time */
1000 enum tmt_en baseint, /* what is the basic interval */
1001 long basestep /* how many if these do we jump a time */
1005 tm = *localtime(&start);
1008 tm.tm_sec -= tm.tm_sec % basestep; break;
1011 tm.tm_min -= tm.tm_min % basestep;
1016 tm.tm_hour -= tm.tm_hour % basestep; break;
1018 /* we do NOT look at the basestep for this ... */
1021 tm.tm_hour = 0; break;
1023 /* we do NOT look at the basestep for this ... */
1027 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1028 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1035 tm.tm_mon -= tm.tm_mon % basestep; break;
1043 tm.tm_year -= (tm.tm_year+1900) % basestep;
1048 /* identify the point where the next gridline, label ... gets placed */
1051 time_t current, /* what is the initial time */
1052 enum tmt_en baseint, /* what is the basic interval */
1053 long basestep /* how many if these do we jump a time */
1058 tm = *localtime(¤t);
1062 tm.tm_sec += basestep; break;
1064 tm.tm_min += basestep; break;
1066 tm.tm_hour += basestep; break;
1068 tm.tm_mday += basestep; break;
1070 tm.tm_mday += 7*basestep; break;
1072 tm.tm_mon += basestep; break;
1074 tm.tm_year += basestep;
1076 madetime = mktime(&tm);
1077 } while (madetime == -1); /* this is necessary to skip impssible times
1078 like the daylight saving time skips */
1084 /* calculate values required for PRINT and GPRINT functions */
1087 print_calc(image_desc_t *im, char ***prdata)
1089 long i,ii,validsteps;
1092 int graphelement = 0;
1095 double magfact = -1;
1099 if (im->imginfo) prlines++;
1100 for(i=0;i<im->gdes_c;i++){
1101 switch(im->gdes[i].gf){
1104 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1105 rrd_set_error("realloc prdata");
1109 /* PRINT and GPRINT can now print VDEF generated values.
1110 * There's no need to do any calculations on them as these
1111 * calculations were already made.
1113 vidx = im->gdes[i].vidx;
1114 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1115 printval = im->gdes[vidx].vf.val;
1116 printtime = im->gdes[vidx].vf.when;
1117 } else { /* need to calculate max,min,avg etcetera */
1118 max_ii =((im->gdes[vidx].end
1119 - im->gdes[vidx].start)
1120 / im->gdes[vidx].step
1121 * im->gdes[vidx].ds_cnt);
1124 for( ii=im->gdes[vidx].ds;
1126 ii+=im->gdes[vidx].ds_cnt){
1127 if (! finite(im->gdes[vidx].data[ii]))
1129 if (isnan(printval)){
1130 printval = im->gdes[vidx].data[ii];
1135 switch (im->gdes[i].cf){
1138 case CF_DEVSEASONAL:
1142 printval += im->gdes[vidx].data[ii];
1145 printval = min( printval, im->gdes[vidx].data[ii]);
1149 printval = max( printval, im->gdes[vidx].data[ii]);
1152 printval = im->gdes[vidx].data[ii];
1155 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1156 if (validsteps > 1) {
1157 printval = (printval / validsteps);
1160 } /* prepare printval */
1162 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1163 if (im->gdes[i].gf == GF_PRINT){
1164 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1165 sprintf((*prdata)[prlines-2],"%s (%lu)",
1166 ctime(&printtime),printtime);
1167 (*prdata)[prlines-1] = NULL;
1169 sprintf(im->gdes[i].legend,"%s (%lu)",
1170 ctime(&printtime),printtime);
1174 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1175 /* Magfact is set to -1 upon entry to print_calc. If it
1176 * is still less than 0, then we need to run auto_scale.
1177 * Otherwise, put the value into the correct units. If
1178 * the value is 0, then do not set the symbol or magnification
1179 * so next the calculation will be performed again. */
1180 if (magfact < 0.0) {
1181 auto_scale(im,&printval,&si_symb,&magfact);
1182 if (printval == 0.0)
1185 printval /= magfact;
1187 *(++percent_s) = 's';
1188 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1189 auto_scale(im,&printval,&si_symb,&magfact);
1192 if (im->gdes[i].gf == GF_PRINT){
1193 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1194 if (bad_format(im->gdes[i].format)) {
1195 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1198 #ifdef HAVE_SNPRINTF
1199 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1201 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1203 (*prdata)[prlines-1] = NULL;
1207 if (bad_format(im->gdes[i].format)) {
1208 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1211 #ifdef HAVE_SNPRINTF
1212 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1214 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1236 return graphelement;
1240 /* place legends with color spots */
1242 leg_place(image_desc_t *im)
1245 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1246 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1247 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1248 int fill=0, fill_last;
1250 int leg_x = border, leg_y = im->ygif;
1254 char prt_fctn; /*special printfunctions */
1257 if( !(im->extra_flags & NOLEGEND) ) {
1258 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1259 rrd_set_error("malloc for legspace");
1263 for(i=0;i<im->gdes_c;i++){
1266 leg_cc = strlen(im->gdes[i].legend);
1268 /* is there a controle code ant the end of the legend string ? */
1269 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1270 prt_fctn = im->gdes[i].legend[leg_cc-1];
1272 im->gdes[i].legend[leg_cc] = '\0';
1276 /* remove exess space */
1277 while (prt_fctn=='g' &&
1279 im->gdes[i].legend[leg_cc-1]==' '){
1281 im->gdes[i].legend[leg_cc]='\0';
1284 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1287 /* no interleg space if string ends in \g */
1288 fill += legspace[i];
1290 if (im->gdes[i].gf != GF_GPRINT &&
1291 im->gdes[i].gf != GF_COMMENT) {
1294 fill += gfx_get_text_width(fill+border,im->text_prop[TEXT_PROP_LEGEND].font,
1295 im->text_prop[TEXT_PROP_LEGEND].size,
1297 im->gdes[i].legend);
1302 /* who said there was a special tag ... ?*/
1303 if (prt_fctn=='g') {
1306 if (prt_fctn == '\0') {
1307 if (i == im->gdes_c -1 ) prt_fctn ='l';
1309 /* is it time to place the legends ? */
1310 if (fill > im->xgif - 2*border){
1325 if (prt_fctn != '\0'){
1327 if (leg_c >= 2 && prt_fctn == 'j') {
1328 glue = (im->xgif - fill - 2* border) / (leg_c-1);
1332 if (prt_fctn =='c') leg_x = (im->xgif - fill) / 2.0;
1333 if (prt_fctn =='r') leg_x = im->xgif - fill - border;
1335 for(ii=mark;ii<=i;ii++){
1336 if(im->gdes[ii].legend[0]=='\0')
1338 im->gdes[ii].leg_x = leg_x;
1339 im->gdes[ii].leg_y = leg_y;
1341 gfx_get_text_width(leg_x,im->text_prop[TEXT_PROP_LEGEND].font,
1342 im->text_prop[TEXT_PROP_LEGEND].size,
1344 im->gdes[ii].legend)
1347 if (im->gdes[ii].gf != GF_GPRINT &&
1348 im->gdes[ii].gf != GF_COMMENT)
1351 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1352 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1364 /* create a grid on the graph. it determines what to do
1365 from the values of xsize, start and end */
1367 /* the xaxis labels are determined from the number of seconds per pixel
1368 in the requested graph */
1373 horizontal_grid(gfx_canvas_t *canvas, image_desc_t *im)
1381 char graph_label[100];
1383 int labfact,gridind;
1384 int decimals, fractionals;
1389 range = im->maxval - im->minval;
1390 scaledrange = range / im->magfact;
1392 /* does the scale of this graph make it impossible to put lines
1393 on it? If so, give up. */
1394 if (isnan(scaledrange)) {
1398 /* find grid spaceing */
1400 if(isnan(im->ygridstep)){
1401 if(im->extra_flags & ALTYGRID) {
1402 /* find the value with max number of digits. Get number of digits */
1403 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1404 if(decimals <= 0) /* everything is small. make place for zero */
1407 fractionals = floor(log10(range));
1408 if(fractionals < 0) /* small amplitude. */
1409 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1411 sprintf(labfmt, "%%%d.1f", decimals + 1);
1412 gridstep = pow((double)10, (double)fractionals);
1413 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1415 /* should have at least 5 lines but no more then 15 */
1416 if(range/gridstep < 5)
1418 if(range/gridstep > 15)
1420 if(range/gridstep > 5) {
1422 if(range/gridstep > 8)
1431 for(i=0;ylab[i].grid > 0;i++){
1432 pixel = im->ysize / (scaledrange / ylab[i].grid);
1433 if (gridind == -1 && pixel > 5) {
1440 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1441 labfact = ylab[gridind].lfac[i];
1446 gridstep = ylab[gridind].grid * im->magfact;
1449 gridstep = im->ygridstep;
1450 labfact = im->ylabfact;
1454 x1=im->xorigin+im->xsize;
1456 sgrid = (int)( im->minval / gridstep - 1);
1457 egrid = (int)( im->maxval / gridstep + 1);
1458 scaledstep = gridstep/im->magfact;
1459 for (i = sgrid; i <= egrid; i++){
1460 y0=ytr(im,gridstep*i);
1461 if ( y0 >= im->yorigin-im->ysize
1462 && y0 <= im->yorigin){
1463 if(i % labfact == 0){
1464 if (i==0 || im->symbol == ' ') {
1466 if(im->extra_flags & ALTYGRID) {
1467 sprintf(graph_label,labfmt,scaledstep*i);
1470 sprintf(graph_label,"%4.1f",scaledstep*i);
1473 sprintf(graph_label,"%4.0f",scaledstep*i);
1477 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1479 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1483 gfx_new_text ( canvas,
1484 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1485 im->graph_col[GRC_FONT],
1486 im->text_prop[TEXT_PROP_AXIS].font,
1487 im->text_prop[TEXT_PROP_AXIS].size,
1488 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1490 gfx_new_line ( canvas,
1493 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1496 gfx_new_line ( canvas,
1499 GRIDWIDTH, im->graph_col[GRC_GRID] );
1507 /* logaritmic horizontal grid */
1509 horizontal_log_grid(gfx_canvas_t *canvas, image_desc_t *im)
1513 int minoridx=0, majoridx=0;
1514 char graph_label[100];
1516 double value, pixperstep, minstep;
1518 /* find grid spaceing */
1519 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1521 if (isnan(pixpex)) {
1525 for(i=0;yloglab[i][0] > 0;i++){
1526 minstep = log10(yloglab[i][0]);
1527 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1528 if(yloglab[i][ii+2]==0){
1529 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1533 pixperstep = pixpex * minstep;
1534 if(pixperstep > 5){minoridx = i;}
1535 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1539 x1=im->xorigin+im->xsize;
1540 /* paint minor grid */
1541 for (value = pow((double)10, log10(im->minval)
1542 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1543 value <= im->maxval;
1544 value *= yloglab[minoridx][0]){
1545 if (value < im->minval) continue;
1547 while(yloglab[minoridx][++i] > 0){
1548 y0 = ytr(im,value * yloglab[minoridx][i]);
1549 if (y0 <= im->yorigin - im->ysize) break;
1550 gfx_new_line ( canvas,
1553 GRIDWIDTH, im->graph_col[GRC_GRID] );
1557 /* paint major grid and labels*/
1558 for (value = pow((double)10, log10(im->minval)
1559 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1560 value <= im->maxval;
1561 value *= yloglab[majoridx][0]){
1562 if (value < im->minval) continue;
1564 while(yloglab[majoridx][++i] > 0){
1565 y0 = ytr(im,value * yloglab[majoridx][i]);
1566 if (y0 <= im->yorigin - im->ysize) break;
1567 gfx_new_line ( canvas,
1570 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1572 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1573 gfx_new_text ( canvas,
1574 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1575 im->graph_col[GRC_FONT],
1576 im->text_prop[TEXT_PROP_AXIS].font,
1577 im->text_prop[TEXT_PROP_AXIS].size,
1578 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1588 gfx_canvas_t *canvas,
1591 int xlab_sel; /* which sort of label and grid ? */
1594 char graph_label[100];
1595 double x0,y0,y1; /* points for filled graph and more*/
1598 /* the type of time grid is determined by finding
1599 the number of seconds per pixel in the graph */
1602 if(im->xlab_user.minsec == -1){
1603 factor=(im->end - im->start)/im->xsize;
1605 while ( xlab[xlab_sel+1].minsec != -1
1606 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1607 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1608 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1609 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1610 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1611 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1612 im->xlab_user.labst = xlab[xlab_sel].labst;
1613 im->xlab_user.precis = xlab[xlab_sel].precis;
1614 im->xlab_user.stst = xlab[xlab_sel].stst;
1617 /* y coords are the same for every line ... */
1619 y1 = im->yorigin-im->ysize;
1622 /* paint the minor grid */
1623 for(ti = find_first_time(im->start,
1624 im->xlab_user.gridtm,
1625 im->xlab_user.gridst);
1627 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1629 /* are we inside the graph ? */
1630 if (ti < im->start || ti > im->end) continue;
1632 gfx_new_line(canvas,x0,y0+1, x0,y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1636 /* paint the major grid */
1637 for(ti = find_first_time(im->start,
1638 im->xlab_user.mgridtm,
1639 im->xlab_user.mgridst);
1641 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1643 /* are we inside the graph ? */
1644 if (ti < im->start || ti > im->end) continue;
1646 gfx_new_line(canvas,x0,y0+2, x0,y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1649 /* paint the labels below the graph */
1650 for(ti = find_first_time(im->start,
1651 im->xlab_user.labtm,
1652 im->xlab_user.labst);
1654 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1656 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1659 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1661 # error "your libc has no strftime I guess we'll abort the exercise here."
1663 gfx_new_text ( canvas,
1664 xtr(im,tilab), y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1665 im->graph_col[GRC_FONT],
1666 im->text_prop[TEXT_PROP_AXIS].font,
1667 im->text_prop[TEXT_PROP_AXIS].size,
1668 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1679 gfx_canvas_t *canvas
1682 /* draw x and y axis */
1683 gfx_new_line ( canvas, im->xorigin+im->xsize,im->yorigin,
1684 im->xorigin+im->xsize,im->yorigin-im->ysize,
1685 GRIDWIDTH, im->graph_col[GRC_GRID]);
1687 gfx_new_line ( canvas, im->xorigin,im->yorigin-im->ysize,
1688 im->xorigin+im->xsize,im->yorigin-im->ysize,
1689 GRIDWIDTH, im->graph_col[GRC_GRID]);
1691 gfx_new_line ( canvas, im->xorigin-4,im->yorigin,
1692 im->xorigin+im->xsize+4,im->yorigin,
1693 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1695 gfx_new_line ( canvas, im->xorigin,im->yorigin+4,
1696 im->xorigin,im->yorigin-im->ysize-4,
1697 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1700 /* arrow for X axis direction */
1701 gfx_new_area ( canvas,
1702 im->xorigin+im->xsize+4, im->yorigin-3,
1703 im->xorigin+im->xsize+4, im->yorigin+3,
1704 im->xorigin+im->xsize+9, im->yorigin,
1705 im->graph_col[GRC_ARROW]);
1714 gfx_canvas_t *canvas
1721 double x0,x1,x2,x3,y0,y1,y2,y3; /* points for filled graph and more*/
1725 /* draw 3d border */
1726 node = gfx_new_area (canvas, 0,im->ygif,
1728 2,2,im->graph_col[GRC_SHADEA]);
1729 gfx_add_point( node , im->xgif - 2, 2 );
1730 gfx_add_point( node , im->xgif, 0 );
1731 gfx_add_point( node , 0,0 );
1732 /* gfx_add_point( node , 0,im->ygif ); */
1734 node = gfx_new_area (canvas, 2,im->ygif-2,
1735 im->xgif-2,im->ygif-2,
1737 im->graph_col[GRC_SHADEB]);
1738 gfx_add_point( node , im->xgif,0);
1739 gfx_add_point( node , im->xgif,im->ygif);
1740 gfx_add_point( node , 0,im->ygif);
1741 /* gfx_add_point( node , 0,im->ygif ); */
1744 if (im->draw_x_grid == 1 )
1745 vertical_grid(canvas, im);
1747 if (im->draw_y_grid == 1){
1748 if(im->logarithmic){
1749 res = horizontal_log_grid(canvas,im);
1751 res = horizontal_grid(canvas,im);
1754 /* dont draw horizontal grid if there is no min and max val */
1756 char *nodata = "No Data found";
1757 gfx_new_text(canvas,im->xgif/2, (2*im->yorigin-im->ysize) / 2,
1758 im->graph_col[GRC_FONT],
1759 im->text_prop[TEXT_PROP_AXIS].font,
1760 im->text_prop[TEXT_PROP_AXIS].size,
1761 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1766 /* yaxis description */
1767 gfx_new_text( canvas,
1768 7, (im->yorigin - im->ysize/2),
1769 im->graph_col[GRC_FONT],
1770 im->text_prop[TEXT_PROP_AXIS].font,
1771 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1772 GFX_H_CENTER, GFX_V_CENTER,
1776 gfx_new_text( canvas,
1777 im->xgif/2, im->text_prop[TEXT_PROP_TITLE].size*1.5,
1778 im->graph_col[GRC_FONT],
1779 im->text_prop[TEXT_PROP_TITLE].font,
1780 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1781 GFX_H_CENTER, GFX_V_CENTER,
1785 if( !(im->extra_flags & NOLEGEND) ) {
1786 for(i=0;i<im->gdes_c;i++){
1787 if(im->gdes[i].legend[0] =='\0')
1790 if(im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT){
1791 x0 = im->gdes[i].leg_x;
1792 y0 = im->gdes[i].leg_y+1.0;
1799 node = gfx_new_area(canvas, x0,y0,x1,y1,x2,y2 ,im->gdes[i].col);
1800 gfx_add_point ( node, x3, y3 );
1801 /* gfx_add_point ( node, x0, y0 ); */
1802 node = gfx_new_line(canvas, x0,y0,x1,y1 ,GRIDWIDTH, im->graph_col[GRC_FRAME]);
1803 gfx_add_point ( node, x2, y2 );
1804 gfx_add_point ( node, x3, y3 );
1805 gfx_add_point ( node, x0, y0 );
1807 gfx_new_text ( canvas, x0+boxH+6, (y0+y2) / 2.0,
1808 im->graph_col[GRC_FONT],
1809 im->text_prop[TEXT_PROP_AXIS].font,
1810 im->text_prop[TEXT_PROP_AXIS].size,
1811 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
1812 im->gdes[i].legend );
1815 x0 = im->gdes[i].leg_x;
1816 y0 = im->gdes[i].leg_y;
1818 gfx_new_text ( canvas, x0, (y0+y2) / 2.0,
1819 im->graph_col[GRC_FONT],
1820 im->text_prop[TEXT_PROP_AXIS].font,
1821 im->text_prop[TEXT_PROP_AXIS].size,
1822 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1823 im->gdes[i].legend );
1831 /*****************************************************
1832 * lazy check make sure we rely need to create this graph
1833 *****************************************************/
1835 int lazy_check(image_desc_t *im){
1838 struct stat gifstat;
1840 if (im->lazy == 0) return 0; /* no lazy option */
1841 if (stat(im->graphfile,&gifstat) != 0)
1842 return 0; /* can't stat */
1843 /* one pixel in the existing graph is more then what we would
1845 if (time(NULL) - gifstat.st_mtime >
1846 (im->end - im->start) / im->xsize)
1848 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1849 return 0; /* the file does not exist */
1850 switch (im->imgformat) {
1852 size = PngSize(fd,&(im->xgif),&(im->ygif));
1860 pie_part(gfx_canvas_t *canvas, gfx_color_t color,
1861 double PieCenterX, double PieCenterY, double Radius,
1862 double startangle, double endangle)
1866 double step=M_PI/50; /* Number of iterations for the circle;
1867 ** 10 is definitely too low, more than
1868 ** 50 seems to be overkill
1871 /* Strange but true: we have to work clockwise or else
1872 ** anti aliasing nor transparency don't work.
1874 ** This test is here to make sure we do it right, also
1875 ** this makes the for...next loop more easy to implement.
1876 ** The return will occur if the user enters a negative number
1877 ** (which shouldn't be done according to the specs) or if the
1878 ** programmers do something wrong (which, as we all know, never
1879 ** happens anyway :)
1881 if (endangle<startangle) return;
1883 /* Hidden feature: Radius decreases each full circle */
1885 while (angle>=2*M_PI) {
1890 node=gfx_new_area(canvas,
1891 PieCenterX+sin(startangle)*Radius,
1892 PieCenterY-cos(startangle)*Radius,
1895 PieCenterX+sin(endangle)*Radius,
1896 PieCenterY-cos(endangle)*Radius,
1898 for (angle=endangle;angle-startangle>=step;angle-=step) {
1900 PieCenterX+sin(angle)*Radius,
1901 PieCenterY-cos(angle)*Radius );
1905 /* draw that picture thing ... */
1907 graph_paint(image_desc_t *im, char ***calcpr)
1910 int lazy = lazy_check(im);
1912 double PieStart=0.0, PieSize=0.0, PieCenterX=0.0, PieCenterY=0.0;
1914 gfx_canvas_t *canvas;
1917 double areazero = 0.0;
1918 enum gf_en stack_gf = GF_PRINT;
1919 graph_desc_t *lastgdes = NULL;
1921 /* if we are lazy and there is nothing to PRINT ... quit now */
1922 if (lazy && im->prt_c==0) return 0;
1924 /* pull the data from the rrd files ... */
1926 if(data_fetch(im)==-1)
1929 /* evaluate VDEF and CDEF operations ... */
1930 if(data_calc(im)==-1)
1933 /* calculate and PRINT and GPRINT definitions. We have to do it at
1934 * this point because it will affect the length of the legends
1935 * if there are no graph elements we stop here ...
1936 * if we are lazy, try to quit ...
1938 i=print_calc(im,calcpr);
1940 if(i==0 || lazy) return 0;
1942 /* get actual drawing data and find min and max values*/
1943 if(data_proc(im)==-1)
1946 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
1948 if(!im->rigid && ! im->logarithmic)
1949 expand_range(im); /* make sure the upper and lower limit are
1952 /* init xtr and ytr */
1953 /* determine the actual size of the gif to draw. The size given
1954 on the cmdline is the graph area. But we need more as we have
1955 draw labels and other things outside the graph area */
1958 im->xorigin = 10 + 9 * im->text_prop[TEXT_PROP_LEGEND].size;
1962 im->yorigin = 10 + im->ysize;
1966 if(im->title[0] != '\0')
1967 im->yorigin += im->text_prop[TEXT_PROP_TITLE].size*3+4;
1969 im->xgif= 20 +im->xsize + im->xorigin;
1970 im->ygif= im->yorigin+2* im->text_prop[TEXT_PROP_LEGEND].size;
1972 /* check if we need to draw a piechart */
1973 for(i=0;i<im->gdes_c;i++){
1974 if (im->gdes[i].gf == GF_PART) {
1981 /* allocate enough space for the piechart itself (PieSize), 20%
1982 ** more for the background and an additional 50 pixels spacing.
1984 if (im->xsize < im->ysize)
1985 PieSize = im->xsize;
1987 PieSize = im->ysize;
1988 im->xgif += PieSize*1.2 + 50;
1990 PieCenterX = im->xorigin + im->xsize + 50 + PieSize*0.6;
1991 PieCenterY = im->yorigin - PieSize*0.5;
1994 /* determine where to place the legends onto the graphics.
1995 and set im->ygif to match space requirements for text */
1996 if(leg_place(im)==-1)
1999 canvas=gfx_new_canvas();
2002 /* the actual graph is created by going through the individual
2003 graph elements and then drawing them */
2005 node=gfx_new_area ( canvas,
2009 im->graph_col[GRC_BACK]);
2011 gfx_add_point(node,0, im->ygif);
2013 node=gfx_new_area ( canvas,
2014 im->xorigin, im->yorigin,
2015 im->xorigin + im->xsize, im->yorigin,
2016 im->xorigin + im->xsize, im->yorigin-im->ysize,
2017 im->graph_col[GRC_CANVAS]);
2019 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
2022 /******************************************************************
2023 ** Just to play around. If you see this, I forgot to remove it **
2024 ******************************************************************/
2026 node=gfx_new_area(canvas,
2028 im->xgif, im->ygif-100,
2030 im->graph_col[GRC_CANVAS]);
2031 gfx_add_point(node,0,im->ygif);
2034 ** top left: current way, solid color
2035 ** top right: proper way, solid color
2036 ** bottom left: current way, alpha=0x80, partially overlapping
2037 ** bottom right: proper way, alpha=0x80, partially overlapping
2040 double x,y,x1,y1,x2,y2,x3,y3,x4,y4;
2044 x1= 20; y1=im->ygif-100+20;
2045 x2=3*x+20; y2=im->ygif-100+20;
2046 x3= x+20; y3=im->ygif-100+20+2*y;
2047 x4=4*x+20; y4=im->ygif-100+20+2*y;
2049 node=gfx_new_area(canvas,
2054 gfx_add_point(node,x1,y1+3*y);
2055 node=gfx_new_area(canvas,
2060 gfx_add_point(node,x2+3*x,y2);
2061 node=gfx_new_area(canvas,
2066 gfx_add_point(node,x3,y3+3*y);
2067 node=gfx_new_area(canvas,
2072 gfx_add_point(node,x4+2*x,y4);
2078 pie_part(canvas,im->graph_col[GRC_CANVAS],PieCenterX,PieCenterY,PieSize*0.6,0,2*M_PI);
2081 if (im->minval > 0.0)
2082 areazero = im->minval;
2083 if (im->maxval < 0.0)
2084 areazero = im->maxval;
2086 axis_paint(im,canvas);
2089 for(i=0;i<im->gdes_c;i++){
2090 switch(im->gdes[i].gf){
2101 for (ii = 0; ii < im->xsize; ii++)
2103 if (!isnan(im->gdes[i].p_data[ii]) &&
2104 im->gdes[i].p_data[ii] > 0.0)
2106 /* generate a tick */
2107 gfx_new_line(canvas, im -> xorigin + ii,
2108 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
2112 im -> gdes[i].col );
2118 stack_gf = im->gdes[i].gf;
2120 /* fix data points at oo and -oo */
2121 for(ii=0;ii<im->xsize;ii++){
2122 if (isinf(im->gdes[i].p_data[ii])){
2123 if (im->gdes[i].p_data[ii] > 0) {
2124 im->gdes[i].p_data[ii] = im->maxval ;
2126 im->gdes[i].p_data[ii] = im->minval ;
2132 if (im->gdes[i].col != 0x0){
2133 /* GF_LINE and friend */
2134 if(stack_gf == GF_LINE ){
2136 for(ii=1;ii<im->xsize;ii++){
2137 if ( ! isnan(im->gdes[i].p_data[ii-1])
2138 && ! isnan(im->gdes[i].p_data[ii])){
2140 node = gfx_new_line(canvas,
2141 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2142 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2143 im->gdes[i].linewidth,
2146 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2155 for(ii=1;ii<im->xsize;ii++){
2157 if ( ! isnan(im->gdes[i].p_data[ii-1])
2158 && ! isnan(im->gdes[i].p_data[ii])){
2161 if (im->gdes[i].gf == GF_STACK) {
2162 ybase = ytr(im,lastgdes->p_data[ii-1]);
2164 ybase = ytr(im,areazero);
2167 node = gfx_new_area(canvas,
2168 ii-1+im->xorigin,ybase,
2169 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2170 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2174 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2178 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2179 /* GF_AREA STACK type*/
2180 if (im->gdes[i].gf == GF_STACK ) {
2182 for (iii=ii-1;iii>area_start;iii--){
2183 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2186 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2191 } /* else GF_LINE */
2192 } /* if color != 0x0 */
2193 /* make sure we do not run into trouble when stacking on NaN */
2194 for(ii=0;ii<im->xsize;ii++){
2195 if (isnan(im->gdes[i].p_data[ii])) {
2198 ybase = ytr(im,lastgdes->p_data[ii-1]);
2200 if (isnan(ybase) || !lastgdes ){
2201 ybase = ytr(im,areazero);
2203 im->gdes[i].p_data[ii] = ybase;
2206 lastgdes = &(im->gdes[i]);
2209 if(isnan(im->gdes[i].yrule)) /* fetch variable */
2210 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2212 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
2213 pie_part(canvas,im->gdes[i].col,
2214 PieCenterX,PieCenterY,PieSize/2,
2215 M_PI*2.0*PieStart/100.0,
2216 M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
2217 PieStart += im->gdes[i].yrule;
2222 grid_paint(im,canvas);
2224 /* the RULES are the last thing to paint ... */
2225 for(i=0;i<im->gdes_c;i++){
2227 switch(im->gdes[i].gf){
2229 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2230 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2232 if(im->gdes[i].yrule >= im->minval
2233 && im->gdes[i].yrule <= im->maxval)
2234 gfx_new_line(canvas,
2235 im->xorigin,ytr(im,im->gdes[i].yrule),
2236 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2237 1.0,im->gdes[i].col);
2240 if(im->gdes[i].xrule == 0) { /* fetch variable */
2241 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2243 if(im->gdes[i].xrule >= im->start
2244 && im->gdes[i].xrule <= im->end)
2245 gfx_new_line(canvas,
2246 xtr(im,im->gdes[i].xrule),im->yorigin,
2247 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2248 1.0,im->gdes[i].col);
2256 if (strcmp(im->graphfile,"-")==0) {
2258 /* Change translation mode for stdout to BINARY */
2259 _setmode( _fileno( stdout ), O_BINARY );
2263 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2264 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2269 switch (im->imgformat) {
2271 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2274 if (strcmp(im->graphfile,"-") != 0)
2277 gfx_destroy(canvas);
2282 /*****************************************************
2284 *****************************************************/
2287 gdes_alloc(image_desc_t *im){
2289 long def_step = (im->end-im->start)/im->xsize;
2291 if (im->step > def_step) /* step can be increassed ... no decreassed */
2292 def_step = im->step;
2296 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2297 * sizeof(graph_desc_t)))==NULL){
2298 rrd_set_error("realloc graph_descs");
2303 im->gdes[im->gdes_c-1].step=def_step;
2304 im->gdes[im->gdes_c-1].start=im->start;
2305 im->gdes[im->gdes_c-1].end=im->end;
2306 im->gdes[im->gdes_c-1].vname[0]='\0';
2307 im->gdes[im->gdes_c-1].data=NULL;
2308 im->gdes[im->gdes_c-1].ds_namv=NULL;
2309 im->gdes[im->gdes_c-1].data_first=0;
2310 im->gdes[im->gdes_c-1].p_data=NULL;
2311 im->gdes[im->gdes_c-1].rpnp=NULL;
2312 im->gdes[im->gdes_c-1].col = 0x0;
2313 im->gdes[im->gdes_c-1].legend[0]='\0';
2314 im->gdes[im->gdes_c-1].rrd[0]='\0';
2315 im->gdes[im->gdes_c-1].ds=-1;
2316 im->gdes[im->gdes_c-1].p_data=NULL;
2320 /* copies input untill the first unescaped colon is found
2321 or until input ends. backslashes have to be escaped as well */
2323 scan_for_col(char *input, int len, char *output)
2328 input[inp] != ':' &&
2331 if (input[inp] == '\\' &&
2332 input[inp+1] != '\0' &&
2333 (input[inp+1] == '\\' ||
2334 input[inp+1] == ':')){
2335 output[outp++] = input[++inp];
2338 output[outp++] = input[inp];
2341 output[outp] = '\0';
2345 /* Some surgery done on this function, it became ridiculously big.
2347 ** - initializing now in rrd_graph_init()
2348 ** - options parsing now in rrd_graph_options()
2349 ** - script parsing now in rrd_graph_script()
2352 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2356 rrd_graph_init(&im);
2358 rrd_graph_options(argc,argv,&im);
2359 if (rrd_test_error()) return -1;
2361 if (strlen(argv[optind])>=MAXPATH) {
2362 rrd_set_error("filename (including path) too long");
2365 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2366 im.graphfile[MAXPATH-1]='\0';
2368 rrd_graph_script(argc,argv,&im);
2369 if (rrd_test_error()) return -1;
2371 /* Everything is now read and the actual work can start */
2374 if (graph_paint(&im,prdata)==-1){
2379 /* The image is generated and needs to be output.
2380 ** Also, if needed, print a line with information about the image.
2388 /* maybe prdata is not allocated yet ... lets do it now */
2389 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2390 rrd_set_error("malloc imginfo");
2394 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2396 rrd_set_error("malloc imginfo");
2399 filename=im.graphfile+strlen(im.graphfile);
2400 while(filename > im.graphfile) {
2401 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2405 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2412 rrd_graph_init(image_desc_t *im)
2416 im->xlab_user.minsec = -1;
2422 im->ylegend[0] = '\0';
2423 im->title[0] = '\0';
2427 im->unitsexponent= 9999;
2432 im->logarithmic = 0;
2433 im->ygridstep = DNAN;
2434 im->draw_x_grid = 1;
2435 im->draw_y_grid = 1;
2441 im->imgformat = IF_PNG; /* we default to PNG output */
2443 for(i=0;i<DIM(graph_col);i++)
2444 im->graph_col[i]=graph_col[i];
2446 for(i=0;i<DIM(text_prop);i++){
2447 im->text_prop[i].size = text_prop[i].size;
2448 im->text_prop[i].font = text_prop[i].font;
2453 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2456 char *parsetime_error = NULL;
2457 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2458 time_t start_tmp=0,end_tmp=0;
2460 struct time_value start_tv, end_tv;
2463 parsetime("end-24h", &start_tv);
2464 parsetime("now", &end_tv);
2467 static struct option long_options[] =
2469 {"start", required_argument, 0, 's'},
2470 {"end", required_argument, 0, 'e'},
2471 {"x-grid", required_argument, 0, 'x'},
2472 {"y-grid", required_argument, 0, 'y'},
2473 {"vertical-label",required_argument,0,'v'},
2474 {"width", required_argument, 0, 'w'},
2475 {"height", required_argument, 0, 'h'},
2476 {"interlaced", no_argument, 0, 'i'},
2477 {"upper-limit",required_argument, 0, 'u'},
2478 {"lower-limit",required_argument, 0, 'l'},
2479 {"rigid", no_argument, 0, 'r'},
2480 {"base", required_argument, 0, 'b'},
2481 {"logarithmic",no_argument, 0, 'o'},
2482 {"color", required_argument, 0, 'c'},
2483 {"font", required_argument, 0, 'n'},
2484 {"title", required_argument, 0, 't'},
2485 {"imginfo", required_argument, 0, 'f'},
2486 {"imgformat", required_argument, 0, 'a'},
2487 {"lazy", no_argument, 0, 'z'},
2488 {"zoom", required_argument, 0, 'm'},
2489 {"no-legend", no_argument, 0, 'g'},
2490 {"alt-y-grid", no_argument, 0, 257 },
2491 {"alt-autoscale", no_argument, 0, 258 },
2492 {"alt-autoscale-max", no_argument, 0, 259 },
2493 {"units-exponent",required_argument, 0, 260},
2494 {"step", required_argument, 0, 261},
2496 int option_index = 0;
2500 opt = getopt_long(argc, argv,
2501 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2502 long_options, &option_index);
2509 im->extra_flags |= ALTYGRID;
2512 im->extra_flags |= ALTAUTOSCALE;
2515 im->extra_flags |= ALTAUTOSCALE_MAX;
2518 im->extra_flags |= NOLEGEND;
2521 im->unitsexponent = atoi(optarg);
2524 im->step = atoi(optarg);
2527 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2528 rrd_set_error( "start time: %s", parsetime_error );
2533 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2534 rrd_set_error( "end time: %s", parsetime_error );
2539 if(strcmp(optarg,"none") == 0){
2545 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2547 &im->xlab_user.gridst,
2549 &im->xlab_user.mgridst,
2551 &im->xlab_user.labst,
2552 &im->xlab_user.precis,
2553 &stroff) == 7 && stroff != 0){
2554 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2555 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2556 rrd_set_error("unknown keyword %s",scan_gtm);
2558 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2559 rrd_set_error("unknown keyword %s",scan_mtm);
2561 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2562 rrd_set_error("unknown keyword %s",scan_ltm);
2565 im->xlab_user.minsec = 1;
2566 im->xlab_user.stst = im->xlab_form;
2568 rrd_set_error("invalid x-grid format");
2574 if(strcmp(optarg,"none") == 0){
2582 &im->ylabfact) == 2) {
2583 if(im->ygridstep<=0){
2584 rrd_set_error("grid step must be > 0");
2586 } else if (im->ylabfact < 1){
2587 rrd_set_error("label factor must be > 0");
2591 rrd_set_error("invalid y-grid format");
2596 strncpy(im->ylegend,optarg,150);
2597 im->ylegend[150]='\0';
2600 im->maxval = atof(optarg);
2603 im->minval = atof(optarg);
2606 im->base = atol(optarg);
2607 if(im->base != 1024 && im->base != 1000 ){
2608 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2613 long_tmp = atol(optarg);
2614 if (long_tmp < 10) {
2615 rrd_set_error("width below 10 pixels");
2618 im->xsize = long_tmp;
2621 long_tmp = atol(optarg);
2622 if (long_tmp < 10) {
2623 rrd_set_error("height below 10 pixels");
2626 im->ysize = long_tmp;
2635 im->imginfo = optarg;
2638 if((im->imgformat = if_conv(optarg)) == -1) {
2639 rrd_set_error("unsupported graphics format '%s'",optarg);
2647 im->logarithmic = 1;
2648 if (isnan(im->minval))
2654 col_nam,&color) == 2){
2656 if((ci=grc_conv(col_nam)) != -1){
2657 im->graph_col[ci]=color;
2659 rrd_set_error("invalid color name '%s'",col_nam);
2662 rrd_set_error("invalid color def format");
2667 /* originally this used char *prop = "" and
2668 ** char *font = "dummy" however this results
2669 ** in a SEG fault, at least on RH7.1
2671 ** The current implementation isn't proper
2672 ** either, font is never freed and prop uses
2673 ** a fixed width string
2682 prop,&size,font) == 3){
2684 if((sindex=text_prop_conv(prop)) != -1){
2685 im->text_prop[sindex].size=size;
2686 im->text_prop[sindex].font=font;
2687 if (sindex==0) { /* the default */
2688 im->text_prop[TEXT_PROP_TITLE].size=size;
2689 im->text_prop[TEXT_PROP_TITLE].font=font;
2690 im->text_prop[TEXT_PROP_AXIS].size=size;
2691 im->text_prop[TEXT_PROP_AXIS].font=font;
2692 im->text_prop[TEXT_PROP_UNIT].size=size;
2693 im->text_prop[TEXT_PROP_UNIT].font=font;
2694 im->text_prop[TEXT_PROP_LEGEND].size=size;
2695 im->text_prop[TEXT_PROP_LEGEND].font=font;
2698 rrd_set_error("invalid fonttag '%s'",prop);
2702 rrd_set_error("invalid text property format");
2708 im->zoom= atof(optarg);
2709 if (im->zoom <= 0.0) {
2710 rrd_set_error("zoom factor must be > 0");
2715 strncpy(im->title,optarg,150);
2716 im->title[150]='\0';
2721 rrd_set_error("unknown option '%c'", optopt);
2723 rrd_set_error("unknown option '%s'",argv[optind-1]);
2728 if (optind >= argc) {
2729 rrd_set_error("missing filename");
2733 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2734 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2738 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2739 /* error string is set in parsetime.c */
2743 if (start_tmp < 3600*24*365*10){
2744 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2748 if (end_tmp < start_tmp) {
2749 rrd_set_error("start (%ld) should be less than end (%ld)",
2750 start_tmp, end_tmp);
2754 im->start = start_tmp;
2759 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2763 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2765 for (i=optind+1;i<argc;i++) {
2770 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2775 /* Each command is one element from *argv[], we call this "line".
2777 ** Each command defines the most current gdes inside struct im.
2778 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2781 gdp=&im->gdes[im->gdes_c-1];
2784 /* function:newvname=string[:ds-name:CF] for xDEF
2785 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2786 ** function:vname#color[:num[:string]] for TICK
2787 ** function:vname-or-num#color[:string] for xRULE,PART
2788 ** function:vname:CF:string for xPRINT
2789 ** function:string for COMMENT
2793 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2795 rrd_set_error("Cannot parse function in line: %s",line);
2799 if(sscanf(funcname,"LINE%lf",&linewidth)){
2800 im->gdes[im->gdes_c-1].gf = GF_LINE;
2801 im->gdes[im->gdes_c-1].linewidth = linewidth;
2803 if ((gdp->gf=gf_conv(funcname))==-1) {
2804 rrd_set_error("'%s' is not a valid function name",funcname);
2810 /* If the error string is set, we exit at the end of the switch */
2813 if (rrd_graph_legend(gdp,&line[argstart])==0)
2814 rrd_set_error("Cannot parse comment in line: %s",line);
2820 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2821 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2823 rrd_set_error("Cannot parse name or num in line: %s",line);
2830 } else if (!rrd_graph_check_vname(im,vname,line)) {
2834 } else break; /* exit due to wrong vname */
2835 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2837 if (strlen(&line[argstart])!=0) {
2838 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2839 rrd_set_error("Cannot parse comment in line: %s",line);
2844 rrd_set_error("STACK must follow another graphing element");
2852 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2854 rrd_set_error("Cannot parse vname in line: %s",line);
2855 else if (rrd_graph_check_vname(im,vname,line))
2856 rrd_set_error("Undefined vname '%s' in line: %s",line);
2858 k=rrd_graph_color(im,&line[argstart],line,1);
2859 if (rrd_test_error()) break;
2860 argstart=argstart+j+k;
2861 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2863 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2866 if (strlen(&line[argstart])!=0)
2867 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2868 rrd_set_error("Cannot parse legend in line: %s",line);
2874 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2876 rrd_set_error("Cannot parse vname in line: '%s'",line);
2880 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2882 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2884 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2885 #define VIDX im->gdes[gdp->vidx]
2887 case -1: /* looks CF but is not really CF */
2888 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2890 case 0: /* CF present and correct */
2891 if (VIDX.gf == GF_VDEF)
2892 rrd_set_error("Don't use CF when printing VDEF");
2895 case 1: /* CF not present */
2896 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2897 else rrd_set_error("Printing DEF or CDEF needs CF");
2900 rrd_set_error("Oops, bug in GPRINT scanning");
2903 if (rrd_test_error()) break;
2905 if (strlen(&line[argstart])!=0) {
2906 if (rrd_graph_legend(gdp,&line[argstart])==0)
2907 rrd_set_error("Cannot parse legend in line: %s",line);
2908 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2909 strcpy(gdp->format, gdp->legend);
2915 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2917 rrd_set_error("Could not parse line: %s",line);
2920 if (find_var(im,gdp->vname)!=-1) {
2921 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2928 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2930 sscanf(&line[argstart],
2931 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2932 gdp->ds_nam, symname, &j, &k);
2933 if ((j==0)||(k!=0)) {
2934 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2937 rrd_graph_check_CF(im,symname,line);
2941 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2943 rrd_set_error("Cannot parse vname in line '%s'",line);
2947 if (rrd_graph_check_vname(im,vname,line)) return;
2948 if ( im->gdes[gdp->vidx].gf != GF_DEF
2949 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2950 rrd_set_error("variable '%s' not DEF nor "
2951 "CDEF in VDEF '%s'", vname,gdp->vname);
2954 vdef_parse(gdp,&line[argstart+strstart]);
2957 if (strstr(&line[argstart],":")!=NULL) {
2958 rrd_set_error("Error in RPN, line: %s",line);
2961 if ((gdp->rpnp = rpn_parse(
2966 rrd_set_error("invalid rpn expression in: %s",line);
2971 default: rrd_set_error("Big oops");
2973 if (rrd_test_error()) {
2980 rrd_set_error("can't make a graph without contents");
2981 im_free(im); /* ??? is this set ??? */
2986 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2988 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2989 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2995 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2998 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
3000 color=strstr(var,"#");
3003 rrd_set_error("Found no color in %s",err);
3012 rest=strstr(color,":");
3020 sscanf(color,"#%6x%n",&col,&n);
3021 col = (col << 8) + 0xff /* shift left by 8 */;
3022 if (n!=7) rrd_set_error("Color problem in %s",err);
3025 sscanf(color,"#%8x%n",&col,&n);
3028 rrd_set_error("Color problem in %s",err);
3030 if (rrd_test_error()) return 0;
3036 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
3038 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
3039 rrd_set_error("Unknown CF '%s' in %s",symname,err);
3045 rrd_graph_legend(graph_desc_t *gdp, char *line)
3049 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
3051 return (strlen(&line[i])==0);
3055 int bad_format(char *fmt) {
3060 while (*ptr != '\0') {
3061 if (*ptr == '%') {ptr++;
3062 if (*ptr == '\0') return 1;
3063 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
3066 if (*ptr == '\0') return 1;
3070 if (*ptr == '\0') return 1;
3071 if (*ptr == 'e' || *ptr == 'f') {
3073 } else { return 1; }
3075 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
3084 vdef_parse(gdes,str)
3085 struct graph_desc_t *gdes;
3088 /* A VDEF currently is either "func" or "param,func"
3089 * so the parsing is rather simple. Change if needed.
3096 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
3097 if (n==strlen(str)) { /* matched */
3101 sscanf(str,"%29[A-Z]%n",func,&n);
3102 if (n==strlen(str)) { /* matched */
3105 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
3112 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
3113 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
3114 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
3115 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
3116 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
3117 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
3118 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
3120 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
3127 switch (gdes->vf.op) {
3129 if (isnan(param)) { /* no parameter given */
3130 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
3136 if (param>=0.0 && param<=100.0) {
3137 gdes->vf.param = param;
3138 gdes->vf.val = DNAN; /* undefined */
3139 gdes->vf.when = 0; /* undefined */
3141 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3155 gdes->vf.param = DNAN;
3156 gdes->vf.val = DNAN;
3159 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3174 graph_desc_t *src,*dst;
3178 dst = &im->gdes[gdi];
3179 src = &im->gdes[dst->vidx];
3180 data = src->data + src->ds;
3181 steps = (src->end - src->start) / src->step;
3184 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3191 switch (dst->vf.op) {
3192 case VDEF_PERCENT: {
3193 rrd_value_t * array;
3197 if ((array = malloc(steps*sizeof(double)))==NULL) {
3198 rrd_set_error("malloc VDEV_PERCENT");
3201 for (step=0;step < steps; step++) {
3202 array[step]=data[step*src->ds_cnt];
3204 qsort(array,step,sizeof(double),vdef_percent_compar);
3206 field = (steps-1)*dst->vf.param/100;
3207 dst->vf.val = array[field];
3208 dst->vf.when = 0; /* no time component */
3210 for(step=0;step<steps;step++)
3211 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3217 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3218 if (step == steps) {
3222 dst->vf.val = data[step*src->ds_cnt];
3223 dst->vf.when = src->start + (step+1)*src->step;
3225 while (step != steps) {
3226 if (finite(data[step*src->ds_cnt])) {
3227 if (data[step*src->ds_cnt] > dst->vf.val) {
3228 dst->vf.val = data[step*src->ds_cnt];
3229 dst->vf.when = src->start + (step+1)*src->step;
3236 case VDEF_AVERAGE: {
3239 for (step=0;step<steps;step++) {
3240 if (finite(data[step*src->ds_cnt])) {
3241 sum += data[step*src->ds_cnt];
3246 if (dst->vf.op == VDEF_TOTAL) {
3247 dst->vf.val = sum*src->step;
3248 dst->vf.when = cnt*src->step; /* not really "when" */
3250 dst->vf.val = sum/cnt;
3251 dst->vf.when = 0; /* no time component */
3261 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3262 if (step == steps) {
3266 dst->vf.val = data[step*src->ds_cnt];
3267 dst->vf.when = src->start + (step+1)*src->step;
3269 while (step != steps) {
3270 if (finite(data[step*src->ds_cnt])) {
3271 if (data[step*src->ds_cnt] < dst->vf.val) {
3272 dst->vf.val = data[step*src->ds_cnt];
3273 dst->vf.when = src->start + (step+1)*src->step;
3280 /* The time value returned here is one step before the
3281 * actual time value. This is the start of the first
3285 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3286 if (step == steps) { /* all entries were NaN */
3290 dst->vf.val = data[step*src->ds_cnt];
3291 dst->vf.when = src->start + step*src->step;
3295 /* The time value returned here is the
3296 * actual time value. This is the end of the last
3300 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3301 if (step < 0) { /* all entries were NaN */
3305 dst->vf.val = data[step*src->ds_cnt];
3306 dst->vf.when = src->start + (step+1)*src->step;
3313 /* NaN < -INF < finite_values < INF */
3315 vdef_percent_compar(a,b)
3318 /* Equality is not returned; this doesn't hurt except
3319 * (maybe) for a little performance.
3322 /* First catch NaN values. They are smallest */
3323 if (isnan( *(double *)a )) return -1;
3324 if (isnan( *(double *)b )) return 1;
3326 /* NaN doesn't reach this part so INF and -INF are extremes.
3327 * The sign from isinf() is compatible with the sign we return
3329 if (isinf( *(double *)a )) return isinf( *(double *)a );
3330 if (isinf( *(double *)b )) return isinf( *(double *)b );
3332 /* If we reach this, both values must be finite */
3333 if ( *(double *)a < *(double *)b ) return -1; else return 1;