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)
181 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 if(steparray == NULL){
819 rrd_set_error("rpn expressions without DEF"
820 " or CDEF variables are not supported");
821 rpnstack_free(&rpnstack);
824 steparray[stepcnt]=0;
825 /* Now find the resulting step. All steps in all
826 * used RRAs have to be visited
828 im->gdes[gdi].step = lcd(steparray);
830 if((im->gdes[gdi].data = malloc((
831 (im->gdes[gdi].end-im->gdes[gdi].start)
832 / im->gdes[gdi].step)
833 * sizeof(double)))==NULL){
834 rrd_set_error("malloc im->gdes[gdi].data");
835 rpnstack_free(&rpnstack);
839 /* Step through the new cdef results array and
840 * calculate the values
842 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
843 now<=im->gdes[gdi].end;
844 now += im->gdes[gdi].step)
846 rpnp_t *rpnp = im -> gdes[gdi].rpnp;
848 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
849 * in this case we are advancing by timesteps;
850 * we use the fact that time_t is a synonym for long
852 if (rpn_calc(rpnp,&rpnstack,(long) now,
853 im->gdes[gdi].data,++dataidx) == -1) {
854 /* rpn_calc sets the error string */
855 rpnstack_free(&rpnstack);
858 } /* enumerate over time steps within a CDEF */
863 } /* enumerate over CDEFs */
864 rpnstack_free(&rpnstack);
868 /* massage data so, that we get one value for each x coordinate in the graph */
870 data_proc( image_desc_t *im ){
872 double pixstep = (double)(im->end-im->start)
873 /(double)im->xsize; /* how much time
874 passes in one pixel */
876 double minval=DNAN,maxval=DNAN;
878 unsigned long gr_time;
880 /* memory for the processed data */
881 for(i=0;i<im->gdes_c;i++){
882 if((im->gdes[i].gf==GF_LINE) ||
883 (im->gdes[i].gf==GF_AREA) ||
884 (im->gdes[i].gf==GF_TICK) ||
885 (im->gdes[i].gf==GF_STACK)){
886 if((im->gdes[i].p_data = malloc((im->xsize +1)
887 * sizeof(rrd_value_t)))==NULL){
888 rrd_set_error("malloc data_proc");
894 for(i=0;i<im->xsize;i++){
896 gr_time = im->start+pixstep*i; /* time of the
900 for(ii=0;ii<im->gdes_c;ii++){
902 switch(im->gdes[ii].gf){
908 vidx = im->gdes[ii].vidx;
912 ((unsigned long)floor(
913 (double)(gr_time-im->gdes[vidx].start) / im->gdes[vidx].step
915 ) *im->gdes[vidx].ds_cnt
918 if (! isnan(value)) {
920 im->gdes[ii].p_data[i] = paintval;
921 /* GF_TICK: the data values are not relevant for min and max */
922 if (finite(paintval) && im->gdes[ii].gf != GF_TICK ){
923 if (isnan(minval) || paintval < minval)
925 if (isnan(maxval) || paintval > maxval)
929 im->gdes[ii].p_data[i] = DNAN;
945 /* if min or max have not been asigned a value this is because
946 there was no data in the graph ... this is not good ...
947 lets set these to dummy values then ... */
949 if (isnan(minval)) minval = 0.0;
950 if (isnan(maxval)) maxval = 1.0;
952 /* adjust min and max values */
953 if (isnan(im->minval)
954 || ((!im->logarithmic && !im->rigid) /* don't adjust low-end with log scale */
955 && im->minval > minval))
957 if (isnan(im->maxval)
959 && im->maxval < maxval)){
961 im->maxval = maxval * 1.1;
965 /* make sure min and max are not equal */
966 if (im->minval == im->maxval) {
968 if (! im->logarithmic) {
972 /* make sure min and max are not both zero */
973 if (im->maxval == 0.0) {
983 /* identify the point where the first gridline, label ... gets placed */
987 time_t start, /* what is the initial time */
988 enum tmt_en baseint, /* what is the basic interval */
989 long basestep /* how many if these do we jump a time */
993 tm = *localtime(&start);
996 tm.tm_sec -= tm.tm_sec % basestep; break;
999 tm.tm_min -= tm.tm_min % basestep;
1004 tm.tm_hour -= tm.tm_hour % basestep; break;
1006 /* we do NOT look at the basestep for this ... */
1009 tm.tm_hour = 0; break;
1011 /* we do NOT look at the basestep for this ... */
1015 tm.tm_mday -= tm.tm_wday -1; /* -1 because we want the monday */
1016 if (tm.tm_wday==0) tm.tm_mday -= 7; /* we want the *previous* monday */
1023 tm.tm_mon -= tm.tm_mon % basestep; break;
1031 tm.tm_year -= (tm.tm_year+1900) % basestep;
1036 /* identify the point where the next gridline, label ... gets placed */
1039 time_t current, /* what is the initial time */
1040 enum tmt_en baseint, /* what is the basic interval */
1041 long basestep /* how many if these do we jump a time */
1046 tm = *localtime(¤t);
1050 tm.tm_sec += basestep; break;
1052 tm.tm_min += basestep; break;
1054 tm.tm_hour += basestep; break;
1056 tm.tm_mday += basestep; break;
1058 tm.tm_mday += 7*basestep; break;
1060 tm.tm_mon += basestep; break;
1062 tm.tm_year += basestep;
1064 madetime = mktime(&tm);
1065 } while (madetime == -1); /* this is necessary to skip impssible times
1066 like the daylight saving time skips */
1072 /* calculate values required for PRINT and GPRINT functions */
1075 print_calc(image_desc_t *im, char ***prdata)
1077 long i,ii,validsteps;
1080 int graphelement = 0;
1083 double magfact = -1;
1087 if (im->imginfo) prlines++;
1088 for(i=0;i<im->gdes_c;i++){
1089 switch(im->gdes[i].gf){
1092 if(((*prdata) = rrd_realloc((*prdata),prlines*sizeof(char *)))==NULL){
1093 rrd_set_error("realloc prdata");
1097 /* PRINT and GPRINT can now print VDEF generated values.
1098 * There's no need to do any calculations on them as these
1099 * calculations were already made.
1101 vidx = im->gdes[i].vidx;
1102 if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
1103 printval = im->gdes[vidx].vf.val;
1104 printtime = im->gdes[vidx].vf.when;
1105 } else { /* need to calculate max,min,avg etcetera */
1106 max_ii =((im->gdes[vidx].end
1107 - im->gdes[vidx].start)
1108 / im->gdes[vidx].step
1109 * im->gdes[vidx].ds_cnt);
1112 for( ii=im->gdes[vidx].ds;
1114 ii+=im->gdes[vidx].ds_cnt){
1115 if (! finite(im->gdes[vidx].data[ii]))
1117 if (isnan(printval)){
1118 printval = im->gdes[vidx].data[ii];
1123 switch (im->gdes[i].cf){
1126 case CF_DEVSEASONAL:
1130 printval += im->gdes[vidx].data[ii];
1133 printval = min( printval, im->gdes[vidx].data[ii]);
1137 printval = max( printval, im->gdes[vidx].data[ii]);
1140 printval = im->gdes[vidx].data[ii];
1143 if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1144 if (validsteps > 1) {
1145 printval = (printval / validsteps);
1148 } /* prepare printval */
1150 if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
1151 if (im->gdes[i].gf == GF_PRINT){
1152 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1153 sprintf((*prdata)[prlines-2],"%s (%lu)",
1154 ctime(&printtime),printtime);
1155 (*prdata)[prlines-1] = NULL;
1157 sprintf(im->gdes[i].legend,"%s (%lu)",
1158 ctime(&printtime),printtime);
1162 if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
1163 /* Magfact is set to -1 upon entry to print_calc. If it
1164 * is still less than 0, then we need to run auto_scale.
1165 * Otherwise, put the value into the correct units. If
1166 * the value is 0, then do not set the symbol or magnification
1167 * so next the calculation will be performed again. */
1168 if (magfact < 0.0) {
1169 auto_scale(im,&printval,&si_symb,&magfact);
1170 if (printval == 0.0)
1173 printval /= magfact;
1175 *(++percent_s) = 's';
1176 } else if (strstr(im->gdes[i].format,"%s") != NULL) {
1177 auto_scale(im,&printval,&si_symb,&magfact);
1180 if (im->gdes[i].gf == GF_PRINT){
1181 (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
1182 if (bad_format(im->gdes[i].format)) {
1183 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1186 #ifdef HAVE_SNPRINTF
1187 snprintf((*prdata)[prlines-2],FMT_LEG_LEN,im->gdes[i].format,printval,si_symb);
1189 sprintf((*prdata)[prlines-2],im->gdes[i].format,printval,si_symb);
1191 (*prdata)[prlines-1] = NULL;
1195 if (bad_format(im->gdes[i].format)) {
1196 rrd_set_error("bad format for [G]PRINT in '%s'", im->gdes[i].format);
1199 #ifdef HAVE_SNPRINTF
1200 snprintf(im->gdes[i].legend,FMT_LEG_LEN-2,im->gdes[i].format,printval,si_symb);
1202 sprintf(im->gdes[i].legend,im->gdes[i].format,printval,si_symb);
1223 return graphelement;
1227 /* place legends with color spots */
1229 leg_place(image_desc_t *im)
1232 int interleg = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1233 int box =im->text_prop[TEXT_PROP_LEGEND].size*1.5;
1234 int border = im->text_prop[TEXT_PROP_LEGEND].size*2.0;
1235 int fill=0, fill_last;
1237 int leg_x = border, leg_y = im->ygif;
1241 char prt_fctn; /*special printfunctions */
1244 if( !(im->extra_flags & NOLEGEND) ) {
1245 if ((legspace = malloc(im->gdes_c*sizeof(int)))==NULL){
1246 rrd_set_error("malloc for legspace");
1250 for(i=0;i<im->gdes_c;i++){
1253 leg_cc = strlen(im->gdes[i].legend);
1255 /* is there a controle code ant the end of the legend string ? */
1256 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc-2] == '\\') {
1257 prt_fctn = im->gdes[i].legend[leg_cc-1];
1259 im->gdes[i].legend[leg_cc] = '\0';
1263 /* remove exess space */
1264 while (prt_fctn=='g' &&
1266 im->gdes[i].legend[leg_cc-1]==' '){
1268 im->gdes[i].legend[leg_cc]='\0';
1271 legspace[i]=(prt_fctn=='g' ? 0 : interleg);
1274 /* no interleg space if string ends in \g */
1275 fill += legspace[i];
1277 if (im->gdes[i].gf != GF_GPRINT &&
1278 im->gdes[i].gf != GF_COMMENT) {
1281 fill += gfx_get_text_width(fill+border,im->text_prop[TEXT_PROP_LEGEND].font,
1282 im->text_prop[TEXT_PROP_LEGEND].size,
1284 im->gdes[i].legend);
1289 /* who said there was a special tag ... ?*/
1290 if (prt_fctn=='g') {
1293 if (prt_fctn == '\0') {
1294 if (i == im->gdes_c -1 ) prt_fctn ='l';
1296 /* is it time to place the legends ? */
1297 if (fill > im->xgif - 2*border){
1312 if (prt_fctn != '\0'){
1314 if (leg_c >= 2 && prt_fctn == 'j') {
1315 glue = (im->xgif - fill - 2* border) / (leg_c-1);
1319 if (prt_fctn =='c') leg_x = (im->xgif - fill) / 2.0;
1320 if (prt_fctn =='r') leg_x = im->xgif - fill - border;
1322 for(ii=mark;ii<=i;ii++){
1323 if(im->gdes[ii].legend[0]=='\0')
1325 im->gdes[ii].leg_x = leg_x;
1326 im->gdes[ii].leg_y = leg_y;
1327 printf("DEBUG: using font %s with width %lf\n",
1328 im->text_prop[TEXT_PROP_LEGEND].font,
1329 im->text_prop[TEXT_PROP_LEGEND].size);
1331 gfx_get_text_width(leg_x,im->text_prop[TEXT_PROP_LEGEND].font,
1332 im->text_prop[TEXT_PROP_LEGEND].size,
1334 im->gdes[ii].legend)
1337 if (im->gdes[ii].gf != GF_GPRINT &&
1338 im->gdes[ii].gf != GF_COMMENT)
1341 leg_y = leg_y + im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1342 if (prt_fctn == 's') leg_y -= im->text_prop[TEXT_PROP_LEGEND].size*1.2;
1354 /* create a grid on the graph. it determines what to do
1355 from the values of xsize, start and end */
1357 /* the xaxis labels are determined from the number of seconds per pixel
1358 in the requested graph */
1363 horizontal_grid(gfx_canvas_t *canvas, image_desc_t *im)
1371 char graph_label[100];
1373 int labfact,gridind;
1374 int decimals, fractionals;
1379 range = im->maxval - im->minval;
1380 scaledrange = range / im->magfact;
1382 /* does the scale of this graph make it impossible to put lines
1383 on it? If so, give up. */
1384 if (isnan(scaledrange)) {
1388 /* find grid spaceing */
1390 if(isnan(im->ygridstep)){
1391 if(im->extra_flags & ALTYGRID) {
1392 /* find the value with max number of digits. Get number of digits */
1393 decimals = ceil(log10(max(fabs(im->maxval), fabs(im->minval))));
1394 if(decimals <= 0) /* everything is small. make place for zero */
1397 fractionals = floor(log10(range));
1398 if(fractionals < 0) /* small amplitude. */
1399 sprintf(labfmt, "%%%d.%df", decimals - fractionals + 1, -fractionals + 1);
1401 sprintf(labfmt, "%%%d.1f", decimals + 1);
1402 gridstep = pow((double)10, (double)fractionals);
1403 if(gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1405 /* should have at least 5 lines but no more then 15 */
1406 if(range/gridstep < 5)
1408 if(range/gridstep > 15)
1410 if(range/gridstep > 5) {
1412 if(range/gridstep > 8)
1421 for(i=0;ylab[i].grid > 0;i++){
1422 pixel = im->ysize / (scaledrange / ylab[i].grid);
1423 if (gridind == -1 && pixel > 5) {
1430 if (pixel * ylab[gridind].lfac[i] >= 2 * im->text_prop[TEXT_PROP_AXIS].size) {
1431 labfact = ylab[gridind].lfac[i];
1436 gridstep = ylab[gridind].grid * im->magfact;
1439 gridstep = im->ygridstep;
1440 labfact = im->ylabfact;
1444 x1=im->xorigin+im->xsize;
1446 sgrid = (int)( im->minval / gridstep - 1);
1447 egrid = (int)( im->maxval / gridstep + 1);
1448 scaledstep = gridstep/im->magfact;
1449 for (i = sgrid; i <= egrid; i++){
1450 y0=ytr(im,gridstep*i);
1451 if ( y0 >= im->yorigin-im->ysize
1452 && y0 <= im->yorigin){
1453 if(i % labfact == 0){
1454 if (i==0 || im->symbol == ' ') {
1456 if(im->extra_flags & ALTYGRID) {
1457 sprintf(graph_label,labfmt,scaledstep*i);
1460 sprintf(graph_label,"%4.1f",scaledstep*i);
1463 sprintf(graph_label,"%4.0f",scaledstep*i);
1467 sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
1469 sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
1473 gfx_new_text ( canvas,
1474 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1475 im->graph_col[GRC_FONT],
1476 im->text_prop[TEXT_PROP_AXIS].font,
1477 im->text_prop[TEXT_PROP_AXIS].size,
1478 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1480 gfx_new_line ( canvas,
1483 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1486 gfx_new_line ( canvas,
1489 GRIDWIDTH, im->graph_col[GRC_GRID] );
1497 /* logaritmic horizontal grid */
1499 horizontal_log_grid(gfx_canvas_t *canvas, image_desc_t *im)
1503 int minoridx=0, majoridx=0;
1504 char graph_label[100];
1506 double value, pixperstep, minstep;
1508 /* find grid spaceing */
1509 pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval));
1511 if (isnan(pixpex)) {
1515 for(i=0;yloglab[i][0] > 0;i++){
1516 minstep = log10(yloglab[i][0]);
1517 for(ii=1;yloglab[i][ii+1] > 0;ii++){
1518 if(yloglab[i][ii+2]==0){
1519 minstep = log10(yloglab[i][ii+1])-log10(yloglab[i][ii]);
1523 pixperstep = pixpex * minstep;
1524 if(pixperstep > 5){minoridx = i;}
1525 if(pixperstep > 2 * im->text_prop[TEXT_PROP_LEGEND].size){majoridx = i;}
1529 x1=im->xorigin+im->xsize;
1530 /* paint minor grid */
1531 for (value = pow((double)10, log10(im->minval)
1532 - fmod(log10(im->minval),log10(yloglab[minoridx][0])));
1533 value <= im->maxval;
1534 value *= yloglab[minoridx][0]){
1535 if (value < im->minval) continue;
1537 while(yloglab[minoridx][++i] > 0){
1538 y0 = ytr(im,value * yloglab[minoridx][i]);
1539 if (y0 <= im->yorigin - im->ysize) break;
1540 gfx_new_line ( canvas,
1543 GRIDWIDTH, im->graph_col[GRC_GRID] );
1547 /* paint major grid and labels*/
1548 for (value = pow((double)10, log10(im->minval)
1549 - fmod(log10(im->minval),log10(yloglab[majoridx][0])));
1550 value <= im->maxval;
1551 value *= yloglab[majoridx][0]){
1552 if (value < im->minval) continue;
1554 while(yloglab[majoridx][++i] > 0){
1555 y0 = ytr(im,value * yloglab[majoridx][i]);
1556 if (y0 <= im->yorigin - im->ysize) break;
1557 gfx_new_line ( canvas,
1560 MGRIDWIDTH, im->graph_col[GRC_MGRID] );
1562 sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]);
1563 gfx_new_text ( canvas,
1564 x0-im->text_prop[TEXT_PROP_AXIS].size/1.5, y0,
1565 im->graph_col[GRC_FONT],
1566 im->text_prop[TEXT_PROP_AXIS].font,
1567 im->text_prop[TEXT_PROP_AXIS].size,
1568 im->tabwidth,0.0, GFX_H_RIGHT, GFX_V_CENTER,
1578 gfx_canvas_t *canvas,
1581 int xlab_sel; /* which sort of label and grid ? */
1584 char graph_label[100];
1585 double x0,y0,y1; /* points for filled graph and more*/
1588 /* the type of time grid is determined by finding
1589 the number of seconds per pixel in the graph */
1592 if(im->xlab_user.minsec == -1){
1593 factor=(im->end - im->start)/im->xsize;
1595 while ( xlab[xlab_sel+1].minsec != -1
1596 && xlab[xlab_sel+1].minsec <= factor){ xlab_sel++; }
1597 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
1598 im->xlab_user.gridst = xlab[xlab_sel].gridst;
1599 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
1600 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
1601 im->xlab_user.labtm = xlab[xlab_sel].labtm;
1602 im->xlab_user.labst = xlab[xlab_sel].labst;
1603 im->xlab_user.precis = xlab[xlab_sel].precis;
1604 im->xlab_user.stst = xlab[xlab_sel].stst;
1607 /* y coords are the same for every line ... */
1609 y1 = im->yorigin-im->ysize;
1612 /* paint the minor grid */
1613 for(ti = find_first_time(im->start,
1614 im->xlab_user.gridtm,
1615 im->xlab_user.gridst);
1617 ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst)
1619 /* are we inside the graph ? */
1620 if (ti < im->start || ti > im->end) continue;
1622 gfx_new_line(canvas,x0,y0+1, x0,y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]);
1626 /* paint the major grid */
1627 for(ti = find_first_time(im->start,
1628 im->xlab_user.mgridtm,
1629 im->xlab_user.mgridst);
1631 ti = find_next_time(ti,im->xlab_user.mgridtm,im->xlab_user.mgridst)
1633 /* are we inside the graph ? */
1634 if (ti < im->start || ti > im->end) continue;
1636 gfx_new_line(canvas,x0,y0+2, x0,y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]);
1639 /* paint the labels below the graph */
1640 for(ti = find_first_time(im->start,
1641 im->xlab_user.labtm,
1642 im->xlab_user.labst);
1644 ti = find_next_time(ti,im->xlab_user.labtm,im->xlab_user.labst)
1646 tilab= ti + im->xlab_user.precis/2; /* correct time for the label */
1649 strftime(graph_label,99,im->xlab_user.stst,localtime(&tilab));
1651 # error "your libc has no strftime I guess we'll abort the exercise here."
1653 gfx_new_text ( canvas,
1654 xtr(im,tilab), y0+im->text_prop[TEXT_PROP_AXIS].size/1.5,
1655 im->graph_col[GRC_FONT],
1656 im->text_prop[TEXT_PROP_AXIS].font,
1657 im->text_prop[TEXT_PROP_AXIS].size,
1658 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP,
1669 gfx_canvas_t *canvas
1672 /* draw x and y axis */
1673 gfx_new_line ( canvas, im->xorigin+im->xsize,im->yorigin,
1674 im->xorigin+im->xsize,im->yorigin-im->ysize,
1675 GRIDWIDTH, im->graph_col[GRC_GRID]);
1677 gfx_new_line ( canvas, im->xorigin,im->yorigin-im->ysize,
1678 im->xorigin+im->xsize,im->yorigin-im->ysize,
1679 GRIDWIDTH, im->graph_col[GRC_GRID]);
1681 gfx_new_line ( canvas, im->xorigin-4,im->yorigin,
1682 im->xorigin+im->xsize+4,im->yorigin,
1683 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1685 gfx_new_line ( canvas, im->xorigin,im->yorigin+4,
1686 im->xorigin,im->yorigin-im->ysize-4,
1687 MGRIDWIDTH, im->graph_col[GRC_GRID]);
1690 /* arrow for X axis direction */
1691 gfx_new_area ( canvas,
1692 im->xorigin+im->xsize+4, im->yorigin-3,
1693 im->xorigin+im->xsize+4, im->yorigin+3,
1694 im->xorigin+im->xsize+9, im->yorigin,
1695 im->graph_col[GRC_ARROW]);
1704 gfx_canvas_t *canvas
1711 double x0,x1,x2,x3,y0,y1,y2,y3; /* points for filled graph and more*/
1715 /* draw 3d border */
1716 node = gfx_new_area (canvas, 0,im->ygif, 0,0, im->xgif, 0,im->graph_col[GRC_SHADEA]);
1717 gfx_add_point( node , im->xgif - 2, 2 );
1718 gfx_add_point( node , 2,2 );
1719 gfx_add_point( node , 2,im->ygif-2 );
1720 gfx_add_point( node , 0,im->ygif );
1722 node = gfx_new_area (canvas, 0,im->ygif, im->xgif,im->ygif, im->xgif,0,im->graph_col[GRC_SHADEB]);
1723 gfx_add_point( node , im->xgif - 2, 2 );
1724 gfx_add_point( node , im->xgif-2,im->ygif-2 );
1725 gfx_add_point( node , 2,im->ygif-2 );
1726 gfx_add_point( node , 0,im->ygif );
1729 if (im->draw_x_grid == 1 )
1730 vertical_grid(canvas, im);
1732 if (im->draw_y_grid == 1){
1733 if(im->logarithmic){
1734 res = horizontal_log_grid(canvas,im);
1736 res = horizontal_grid(canvas,im);
1739 /* dont draw horizontal grid if there is no min and max val */
1741 char *nodata = "No Data found";
1742 gfx_new_text(canvas,im->xgif/2, (2*im->yorigin-im->ysize) / 2,
1743 im->graph_col[GRC_FONT],
1744 im->text_prop[TEXT_PROP_AXIS].font,
1745 im->text_prop[TEXT_PROP_AXIS].size,
1746 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_CENTER,
1751 /* yaxis description */
1752 gfx_new_text( canvas,
1753 7, (im->yorigin - im->ysize/2),
1754 im->graph_col[GRC_FONT],
1755 im->text_prop[TEXT_PROP_AXIS].font,
1756 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
1757 GFX_H_CENTER, GFX_V_CENTER,
1761 gfx_new_text( canvas,
1762 im->xgif/2, im->text_prop[TEXT_PROP_TITLE].size*1.5,
1763 im->graph_col[GRC_FONT],
1764 im->text_prop[TEXT_PROP_TITLE].font,
1765 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
1766 GFX_H_CENTER, GFX_V_CENTER,
1770 if( !(im->extra_flags & NOLEGEND) ) {
1771 for(i=0;i<im->gdes_c;i++){
1772 if(im->gdes[i].legend[0] =='\0')
1775 if(im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT){
1776 x0 = im->gdes[i].leg_x;
1777 y0 = im->gdes[i].leg_y+1.0;
1784 node = gfx_new_area(canvas, x0,y0,x1,y1,x2,y2 ,im->gdes[i].col);
1785 gfx_add_point ( node, x3, y3 );
1786 gfx_add_point ( node, x0, y0 );
1787 node = gfx_new_line(canvas, x0,y0,x1,y1 ,GRIDWIDTH, im->graph_col[GRC_FRAME]);
1788 gfx_add_point ( node, x2, y2 );
1789 gfx_add_point ( node, x3, y3 );
1790 gfx_add_point ( node, x0, y0 );
1792 gfx_new_text ( canvas, x0+boxH+6, (y0+y2) / 2.0,
1793 im->graph_col[GRC_FONT],
1794 im->text_prop[TEXT_PROP_AXIS].font,
1795 im->text_prop[TEXT_PROP_AXIS].size,
1796 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
1797 im->gdes[i].legend );
1800 x0 = im->gdes[i].leg_x;
1801 y0 = im->gdes[i].leg_y;
1803 gfx_new_text ( canvas, x0, (y0+y2) / 2.0,
1804 im->graph_col[GRC_FONT],
1805 im->text_prop[TEXT_PROP_AXIS].font,
1806 im->text_prop[TEXT_PROP_AXIS].size,
1807 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_BOTTOM,
1808 im->gdes[i].legend );
1816 /*****************************************************
1817 * lazy check make sure we rely need to create this graph
1818 *****************************************************/
1820 int lazy_check(image_desc_t *im){
1823 struct stat gifstat;
1825 if (im->lazy == 0) return 0; /* no lazy option */
1826 if (stat(im->graphfile,&gifstat) != 0)
1827 return 0; /* can't stat */
1828 /* one pixel in the existing graph is more then what we would
1830 if (time(NULL) - gifstat.st_mtime >
1831 (im->end - im->start) / im->xsize)
1833 if ((fd = fopen(im->graphfile,"rb")) == NULL)
1834 return 0; /* the file does not exist */
1835 switch (im->imgformat) {
1837 size = GifSize(fd,&(im->xgif),&(im->ygif));
1840 size = PngSize(fd,&(im->xgif),&(im->ygif));
1848 /* draw that picture thing ... */
1850 graph_paint(image_desc_t *im, char ***calcpr)
1853 int lazy = lazy_check(im);
1855 gfx_canvas_t *canvas;
1858 double areazero = 0.0;
1859 enum gf_en stack_gf = GF_PRINT;
1860 graph_desc_t *lastgdes = NULL;
1862 /* if we are lazy and there is nothing to PRINT ... quit now */
1863 if (lazy && im->prt_c==0) return 0;
1865 /* pull the data from the rrd files ... */
1867 if(data_fetch(im)==-1)
1870 /* evaluate VDEF and CDEF operations ... */
1871 if(data_calc(im)==-1)
1874 /* calculate and PRINT and GPRINT definitions. We have to do it at
1875 * this point because it will affect the length of the legends
1876 * if there are no graph elements we stop here ...
1877 * if we are lazy, try to quit ...
1879 i=print_calc(im,calcpr);
1881 if(i==0 || lazy) return 0;
1883 /* get actual drawing data and find min and max values*/
1884 if(data_proc(im)==-1)
1887 if(!im->logarithmic){si_unit(im);} /* identify si magnitude Kilo, Mega Giga ? */
1889 if(!im->rigid && ! im->logarithmic)
1890 expand_range(im); /* make sure the upper and lower limit are
1893 /* init xtr and ytr */
1894 /* determine the actual size of the gif to draw. The size given
1895 on the cmdline is the graph area. But we need more as we have
1896 draw labels and other things outside the graph area */
1899 im->xorigin = 10 + 9 * im->text_prop[TEXT_PROP_LEGEND].size;
1903 im->yorigin = 10 + im->ysize;
1907 if(im->title[0] != '\0')
1908 im->yorigin += im->text_prop[TEXT_PROP_TITLE].size*3+4;
1910 im->xgif=20+im->xsize + im->xorigin;
1911 im->ygif= im->yorigin+2* im->text_prop[TEXT_PROP_LEGEND].size;
1913 /* determine where to place the legends onto the graphics.
1914 and set im->ygif to match space requirements for text */
1915 if(leg_place(im)==-1)
1918 canvas=gfx_new_canvas();
1920 /* the actual graph is created by going through the individual
1921 graph elements and then drawing them */
1923 node=gfx_new_area ( canvas,
1927 im->graph_col[GRC_BACK]);
1929 gfx_add_point(node,0, im->ygif);
1931 node=gfx_new_area ( canvas,
1932 im->xorigin, im->yorigin,
1933 im->xorigin + im->xsize, im->yorigin,
1934 im->xorigin + im->xsize, im->yorigin-im->ysize,
1935 im->graph_col[GRC_CANVAS]);
1937 gfx_add_point(node,im->xorigin, im->yorigin - im->ysize);
1940 if (im->minval > 0.0)
1941 areazero = im->minval;
1942 if (im->maxval < 0.0)
1943 areazero = im->maxval;
1945 axis_paint(im,canvas);
1948 for(i=0;i<im->gdes_c;i++){
1949 switch(im->gdes[i].gf){
1960 for (ii = 0; ii < im->xsize; ii++)
1962 if (!isnan(im->gdes[i].p_data[ii]) &&
1963 im->gdes[i].p_data[ii] > 0.0)
1965 /* generate a tick */
1966 gfx_new_line(canvas, im -> xorigin + ii,
1967 im -> yorigin - (im -> gdes[i].yrule * im -> ysize),
1971 im -> gdes[i].col );
1977 stack_gf = im->gdes[i].gf;
1979 /* fix data points at oo and -oo */
1980 for(ii=0;ii<im->xsize;ii++){
1981 if (isinf(im->gdes[i].p_data[ii])){
1982 if (im->gdes[i].p_data[ii] > 0) {
1983 im->gdes[i].p_data[ii] = im->maxval ;
1985 im->gdes[i].p_data[ii] = im->minval ;
1991 if (im->gdes[i].col != 0x0){
1992 /* GF_LINE and friend */
1993 if(stack_gf == GF_LINE ){
1995 for(ii=1;ii<im->xsize;ii++){
1996 if ( ! isnan(im->gdes[i].p_data[ii-1])
1997 && ! isnan(im->gdes[i].p_data[ii])){
1999 node = gfx_new_line(canvas,
2000 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2001 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2002 im->gdes[i].linewidth,
2005 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2014 for(ii=1;ii<im->xsize;ii++){
2016 if ( ! isnan(im->gdes[i].p_data[ii-1])
2017 && ! isnan(im->gdes[i].p_data[ii])){
2020 if (im->gdes[i].gf == GF_STACK) {
2021 ybase = ytr(im,lastgdes->p_data[ii-1]);
2023 ybase = ytr(im,areazero);
2026 node = gfx_new_area(canvas,
2027 ii-1+im->xorigin,ybase,
2028 ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
2029 ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
2033 gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
2037 if ( node != NULL && (ii+1==im->xsize || isnan(im->gdes[i].p_data[ii]) )){
2038 /* GF_AREA STACK type*/
2039 if (im->gdes[i].gf == GF_STACK ) {
2041 for (iii=ii-1;iii>area_start;iii--){
2042 gfx_add_point(node,iii+im->xorigin,ytr(im,lastgdes->p_data[iii]));
2045 gfx_add_point(node,ii+im->xorigin,ytr(im,areazero));
2050 } /* else GF_LINE */
2051 } /* if color != 0x0 */
2052 /* make sure we do not run into trouble when stacking on NaN */
2053 for(ii=0;ii<im->xsize;ii++){
2054 if (isnan(im->gdes[i].p_data[ii])) {
2057 ybase = ytr(im,lastgdes->p_data[ii-1]);
2059 if (isnan(ybase) || !lastgdes ){
2060 ybase = ytr(im,areazero);
2062 im->gdes[i].p_data[ii] = ybase;
2065 lastgdes = &(im->gdes[i]);
2069 grid_paint(im,canvas);
2071 /* the RULES are the last thing to paint ... */
2072 for(i=0;i<im->gdes_c;i++){
2074 switch(im->gdes[i].gf){
2076 printf("DEBUG: HRULE at %f\n",im->gdes[i].yrule);
2077 if(isnan(im->gdes[i].yrule)) { /* fetch variable */
2078 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
2080 if(im->gdes[i].yrule >= im->minval
2081 && im->gdes[i].yrule <= im->maxval)
2082 gfx_new_line(canvas,
2083 im->xorigin,ytr(im,im->gdes[i].yrule),
2084 im->xorigin+im->xsize,ytr(im,im->gdes[i].yrule),
2085 1.0,im->gdes[i].col);
2088 if(im->gdes[i].xrule == 0) { /* fetch variable */
2089 im->gdes[i].xrule = im->gdes[im->gdes[i].vidx].vf.when;
2091 if(im->gdes[i].xrule >= im->start
2092 && im->gdes[i].xrule <= im->end)
2093 gfx_new_line(canvas,
2094 xtr(im,im->gdes[i].xrule),im->yorigin,
2095 xtr(im,im->gdes[i].xrule),im->yorigin-im->ysize,
2096 1.0,im->gdes[i].col);
2104 if (strcmp(im->graphfile,"-")==0) {
2106 /* Change translation mode for stdout to BINARY */
2107 _setmode( _fileno( stdout ), O_BINARY );
2111 if ((fo = fopen(im->graphfile,"wb")) == NULL) {
2112 rrd_set_error("Opening '%s' for write: %s",im->graphfile,
2117 switch (im->imgformat) {
2121 gfx_render_png (canvas,im->xgif,im->ygif,im->zoom,0x0,fo);
2124 if (strcmp(im->graphfile,"-") != 0)
2127 gfx_destroy(canvas);
2132 /*****************************************************
2134 *****************************************************/
2137 gdes_alloc(image_desc_t *im){
2139 long def_step = (im->end-im->start)/im->xsize;
2141 if (im->step > def_step) /* step can be increassed ... no decreassed */
2142 def_step = im->step;
2146 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
2147 * sizeof(graph_desc_t)))==NULL){
2148 rrd_set_error("realloc graph_descs");
2153 im->gdes[im->gdes_c-1].step=def_step;
2154 im->gdes[im->gdes_c-1].start=im->start;
2155 im->gdes[im->gdes_c-1].end=im->end;
2156 im->gdes[im->gdes_c-1].vname[0]='\0';
2157 im->gdes[im->gdes_c-1].data=NULL;
2158 im->gdes[im->gdes_c-1].ds_namv=NULL;
2159 im->gdes[im->gdes_c-1].data_first=0;
2160 im->gdes[im->gdes_c-1].p_data=NULL;
2161 im->gdes[im->gdes_c-1].rpnp=NULL;
2162 im->gdes[im->gdes_c-1].col = 0x0;
2163 im->gdes[im->gdes_c-1].legend[0]='\0';
2164 im->gdes[im->gdes_c-1].rrd[0]='\0';
2165 im->gdes[im->gdes_c-1].ds=-1;
2166 im->gdes[im->gdes_c-1].p_data=NULL;
2170 /* copies input untill the first unescaped colon is found
2171 or until input ends. backslashes have to be escaped as well */
2173 scan_for_col(char *input, int len, char *output)
2178 input[inp] != ':' &&
2181 if (input[inp] == '\\' &&
2182 input[inp+1] != '\0' &&
2183 (input[inp+1] == '\\' ||
2184 input[inp+1] == ':')){
2185 output[outp++] = input[++inp];
2188 output[outp++] = input[inp];
2191 output[outp] = '\0';
2195 /* Some surgery done on this function, it became ridiculously big.
2197 ** - initializing now in rrd_graph_init()
2198 ** - options parsing now in rrd_graph_options()
2199 ** - script parsing now in rrd_graph_script()
2202 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
2206 rrd_graph_init(&im);
2208 rrd_graph_options(argc,argv,&im);
2209 if (rrd_test_error()) return -1;
2211 if (strlen(argv[optind])>=MAXPATH) {
2212 rrd_set_error("filename (including path) too long");
2215 strncpy(im.graphfile,argv[optind],MAXPATH-1);
2216 im.graphfile[MAXPATH-1]='\0';
2218 rrd_graph_script(argc,argv,&im);
2219 if (rrd_test_error()) return -1;
2221 /* Everything is now read and the actual work can start */
2224 if (graph_paint(&im,prdata)==-1){
2229 /* The image is generated and needs to be output.
2230 ** Also, if needed, print a line with information about the image.
2238 /* maybe prdata is not allocated yet ... lets do it now */
2239 if ((*prdata = calloc(2,sizeof(char *)))==NULL) {
2240 rrd_set_error("malloc imginfo");
2244 if(((*prdata)[0] = malloc((strlen(im.imginfo)+200+strlen(im.graphfile))*sizeof(char)))
2246 rrd_set_error("malloc imginfo");
2249 filename=im.graphfile+strlen(im.graphfile);
2250 while(filename > im.graphfile) {
2251 if (*(filename-1)=='/' || *(filename-1)=='\\' ) break;
2255 sprintf((*prdata)[0],im.imginfo,filename,(long)(im.zoom*im.xgif),(long)(im.zoom*im.ygif));
2262 rrd_graph_init(image_desc_t *im)
2266 im->xlab_user.minsec = -1;
2272 im->ylegend[0] = '\0';
2273 im->title[0] = '\0';
2277 im->unitsexponent= 9999;
2282 im->logarithmic = 0;
2283 im->ygridstep = DNAN;
2284 im->draw_x_grid = 1;
2285 im->draw_y_grid = 1;
2291 im->imgformat = IF_GIF; /* we default to GIF output */
2293 for(i=0;i<DIM(graph_col);i++)
2294 im->graph_col[i]=graph_col[i];
2296 for(i=0;i<DIM(text_prop);i++){
2297 im->text_prop[i].size = text_prop[i].size;
2298 im->text_prop[i].font = text_prop[i].font;
2303 rrd_graph_options(int argc, char *argv[],image_desc_t *im)
2306 char *parsetime_error = NULL;
2307 char scan_gtm[12],scan_mtm[12],scan_ltm[12],col_nam[12];
2308 time_t start_tmp=0,end_tmp=0;
2310 struct time_value start_tv, end_tv;
2313 parsetime("end-24h", &start_tv);
2314 parsetime("now", &end_tv);
2317 static struct option long_options[] =
2319 {"start", required_argument, 0, 's'},
2320 {"end", required_argument, 0, 'e'},
2321 {"x-grid", required_argument, 0, 'x'},
2322 {"y-grid", required_argument, 0, 'y'},
2323 {"vertical-label",required_argument,0,'v'},
2324 {"width", required_argument, 0, 'w'},
2325 {"height", required_argument, 0, 'h'},
2326 {"interlaced", no_argument, 0, 'i'},
2327 {"upper-limit",required_argument, 0, 'u'},
2328 {"lower-limit",required_argument, 0, 'l'},
2329 {"rigid", no_argument, 0, 'r'},
2330 {"base", required_argument, 0, 'b'},
2331 {"logarithmic",no_argument, 0, 'o'},
2332 {"color", required_argument, 0, 'c'},
2333 {"font", required_argument, 0, 'n'},
2334 {"title", required_argument, 0, 't'},
2335 {"imginfo", required_argument, 0, 'f'},
2336 {"imgformat", required_argument, 0, 'a'},
2337 {"lazy", no_argument, 0, 'z'},
2338 {"zoom", required_argument, 0, 'm'},
2339 {"no-legend", no_argument, 0, 'g'},
2340 {"alt-y-grid", no_argument, 0, 257 },
2341 {"alt-autoscale", no_argument, 0, 258 },
2342 {"alt-autoscale-max", no_argument, 0, 259 },
2343 {"units-exponent",required_argument, 0, 260},
2344 {"step", required_argument, 0, 261},
2346 int option_index = 0;
2350 opt = getopt_long(argc, argv,
2351 "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:z:g",
2352 long_options, &option_index);
2359 im->extra_flags |= ALTYGRID;
2362 im->extra_flags |= ALTAUTOSCALE;
2365 im->extra_flags |= ALTAUTOSCALE_MAX;
2368 im->extra_flags |= NOLEGEND;
2371 im->unitsexponent = atoi(optarg);
2374 im->step = atoi(optarg);
2377 if ((parsetime_error = parsetime(optarg, &start_tv))) {
2378 rrd_set_error( "start time: %s", parsetime_error );
2383 if ((parsetime_error = parsetime(optarg, &end_tv))) {
2384 rrd_set_error( "end time: %s", parsetime_error );
2389 if(strcmp(optarg,"none") == 0){
2395 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
2397 &im->xlab_user.gridst,
2399 &im->xlab_user.mgridst,
2401 &im->xlab_user.labst,
2402 &im->xlab_user.precis,
2403 &stroff) == 7 && stroff != 0){
2404 strncpy(im->xlab_form, optarg+stroff, sizeof(im->xlab_form) - 1);
2405 if((im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1){
2406 rrd_set_error("unknown keyword %s",scan_gtm);
2408 } else if ((im->xlab_user.mgridtm = tmt_conv(scan_mtm)) == -1){
2409 rrd_set_error("unknown keyword %s",scan_mtm);
2411 } else if ((im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1){
2412 rrd_set_error("unknown keyword %s",scan_ltm);
2415 im->xlab_user.minsec = 1;
2416 im->xlab_user.stst = im->xlab_form;
2418 rrd_set_error("invalid x-grid format");
2424 if(strcmp(optarg,"none") == 0){
2432 &im->ylabfact) == 2) {
2433 if(im->ygridstep<=0){
2434 rrd_set_error("grid step must be > 0");
2436 } else if (im->ylabfact < 1){
2437 rrd_set_error("label factor must be > 0");
2441 rrd_set_error("invalid y-grid format");
2446 strncpy(im->ylegend,optarg,150);
2447 im->ylegend[150]='\0';
2450 im->maxval = atof(optarg);
2453 im->minval = atof(optarg);
2456 im->base = atol(optarg);
2457 if(im->base != 1024 && im->base != 1000 ){
2458 rrd_set_error("the only sensible value for base apart from 1000 is 1024");
2463 long_tmp = atol(optarg);
2464 if (long_tmp < 10) {
2465 rrd_set_error("width below 10 pixels");
2468 im->xsize = long_tmp;
2471 long_tmp = atol(optarg);
2472 if (long_tmp < 10) {
2473 rrd_set_error("height below 10 pixels");
2476 im->ysize = long_tmp;
2485 im->imginfo = optarg;
2488 if((im->imgformat = if_conv(optarg)) == -1) {
2489 rrd_set_error("unsupported graphics format '%s'",optarg);
2497 im->logarithmic = 1;
2498 if (isnan(im->minval))
2504 col_nam,&color) == 2){
2506 if((ci=grc_conv(col_nam)) != -1){
2507 im->graph_col[ci]=color;
2509 rrd_set_error("invalid color name '%s'",col_nam);
2512 rrd_set_error("invalid color def format");
2517 /* originally this used char *prop = "" and
2518 ** char *font = "dummy" however this results
2519 ** in a SEG fault, at least on RH7.1
2521 ** The current implementation isn't proper
2522 ** either, font is never freed and prop uses
2523 ** a fixed width string
2532 prop,&size,font) == 3){
2534 if((sindex=text_prop_conv(prop)) != -1){
2535 printf("DEBUG: setting all to the default of font %s with width %lf\n",
2537 im->text_prop[sindex].size=size;
2538 im->text_prop[sindex].font=font;
2539 if (sindex==0) { /* the default */
2540 im->text_prop[TEXT_PROP_TITLE].size=size;
2541 im->text_prop[TEXT_PROP_TITLE].font=font;
2542 im->text_prop[TEXT_PROP_AXIS].size=size;
2543 im->text_prop[TEXT_PROP_AXIS].font=font;
2544 im->text_prop[TEXT_PROP_UNIT].size=size;
2545 im->text_prop[TEXT_PROP_UNIT].font=font;
2546 im->text_prop[TEXT_PROP_LEGEND].size=size;
2547 im->text_prop[TEXT_PROP_LEGEND].font=font;
2550 rrd_set_error("invalid fonttag '%s'",prop);
2554 rrd_set_error("invalid text property format");
2560 im->zoom= atof(optarg);
2561 if (im->zoom <= 0.0) {
2562 rrd_set_error("zoom factor must be > 0");
2567 strncpy(im->title,optarg,150);
2568 im->title[150]='\0';
2573 rrd_set_error("unknown option '%c'", optopt);
2575 rrd_set_error("unknown option '%s'",argv[optind-1]);
2580 if (optind >= argc) {
2581 rrd_set_error("missing filename");
2585 if (im->logarithmic == 1 && (im->minval <= 0 || isnan(im->minval))){
2586 rrd_set_error("for a logarithmic yaxis you must specify a lower-limit > 0");
2590 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
2591 /* error string is set in parsetime.c */
2595 if (start_tmp < 3600*24*365*10){
2596 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",start_tmp);
2600 if (end_tmp < start_tmp) {
2601 rrd_set_error("start (%ld) should be less than end (%ld)",
2602 start_tmp, end_tmp);
2606 im->start = start_tmp;
2611 rrd_graph_script(int argc, char *argv[], image_desc_t *im)
2615 int linepass = 0; /* stack must follow LINE*, AREA or STACK */
2617 for (i=optind+1;i<argc;i++) {
2622 char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
2627 /* Each command is one element from *argv[], we call this "line".
2629 ** Each command defines the most current gdes inside struct im.
2630 ** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
2633 gdp=&im->gdes[im->gdes_c-1];
2636 /* function:newvname=string[:ds-name:CF] for xDEF
2637 ** function:vname[#color[:string]] for LINEx,AREA,STACK
2638 ** function:vname#color[:num[:string]] for TICK
2639 ** function:vname-or-num#color[:string] for xRULE
2640 ** function:vname:CF:string for xPRINT
2641 ** function:string for COMMENT
2645 sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
2647 rrd_set_error("Cannot parse function in line: %s",line);
2651 if(sscanf(funcname,"LINE%lf",&linewidth)){
2652 im->gdes[im->gdes_c-1].gf = GF_LINE;
2653 im->gdes[im->gdes_c-1].linewidth = linewidth;
2655 if ((gdp->gf=gf_conv(funcname))==-1) {
2656 rrd_set_error("'%s' is not a valid function name",funcname);
2662 /* If the error string is set, we exit at the end of the switch */
2665 if (rrd_graph_legend(gdp,&line[argstart])==0)
2666 rrd_set_error("Cannot parse comment in line: %s",line);
2671 sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
2672 sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
2674 rrd_set_error("Cannot parse name or num in line: %s",line);
2681 } else if (!rrd_graph_check_vname(im,vname,line)) {
2685 } else break; /* exit due to wrong vname */
2686 if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
2688 if (strlen(&line[argstart])!=0) {
2689 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2690 rrd_set_error("Cannot parse comment in line: %s",line);
2695 rrd_set_error("STACK must follow another graphing element");
2703 sscanf(&line[argstart],DEF_NAM_FMT"%n%1[#:]%n",vname,&j,sep,&k);
2705 rrd_set_error("Cannot parse vname in line: %s",line);
2706 else if (rrd_graph_check_vname(im,vname,line))
2707 rrd_set_error("Undefined vname '%s' in line: %s",line);
2709 k=rrd_graph_color(im,&line[argstart],line,1);
2710 if (rrd_test_error()) break;
2711 argstart=argstart+j+k;
2712 if ((strlen(&line[argstart])!=0)&&(gdp->gf==GF_TICK)) {
2714 sscanf(&line[argstart], ":%lf%n", &gdp->yrule,&j);
2717 if (strlen(&line[argstart])!=0)
2718 if (rrd_graph_legend(gdp,&line[++argstart])==0)
2719 rrd_set_error("Cannot parse legend in line: %s",line);
2725 sscanf(&line[argstart], DEF_NAM_FMT ":%n",gdp->vname,&j);
2727 rrd_set_error("Cannot parse vname in line: '%s'",line);
2731 if (rrd_graph_check_vname(im,gdp->vname,line)) return;
2733 sscanf(&line[argstart], CF_NAM_FMT ":%n",symname,&j);
2735 k=(j!=0)?rrd_graph_check_CF(im,symname,line):1;
2736 #define VIDX im->gdes[gdp->vidx]
2738 case -1: /* looks CF but is not really CF */
2739 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2741 case 0: /* CF present and correct */
2742 if (VIDX.gf == GF_VDEF)
2743 rrd_set_error("Don't use CF when printing VDEF");
2746 case 1: /* CF not present */
2747 if (VIDX.gf == GF_VDEF) rrd_clear_error();
2748 else rrd_set_error("Printing DEF or CDEF needs CF");
2751 rrd_set_error("Oops, bug in GPRINT scanning");
2754 if (rrd_test_error()) break;
2756 if (strlen(&line[argstart])!=0) {
2757 if (rrd_graph_legend(gdp,&line[argstart])==0)
2758 rrd_set_error("Cannot parse legend in line: %s",line);
2759 } else rrd_set_error("No legend in (G)PRINT line: %s",line);
2760 strcpy(gdp->format, gdp->legend);
2766 sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
2768 rrd_set_error("Could not parse line: %s",line);
2771 if (find_var(im,gdp->vname)!=-1) {
2772 rrd_set_error("Variable '%s' in line '%s' already in use\n",
2779 argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
2781 sscanf(&line[argstart],
2782 ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
2783 gdp->ds_nam, symname, &j, &k);
2784 if ((j==0)||(k!=0)) {
2785 rrd_set_error("Cannot parse DS or CF in '%s'",line);
2788 rrd_graph_check_CF(im,symname,line);
2792 sscanf(&line[argstart],DEF_NAM_FMT ",%n",vname,&j);
2794 rrd_set_error("Cannot parse vname in line '%s'",line);
2798 if (rrd_graph_check_vname(im,vname,line)) return;
2799 if ( im->gdes[gdp->vidx].gf != GF_DEF
2800 && im->gdes[gdp->vidx].gf != GF_CDEF) {
2801 rrd_set_error("variable '%s' not DEF nor "
2802 "CDEF in VDEF '%s'", vname,gdp->vname);
2805 vdef_parse(gdp,&line[argstart+strstart]);
2808 if (strstr(&line[argstart],":")!=NULL) {
2809 rrd_set_error("Error in RPN, line: %s",line);
2812 if ((gdp->rpnp = rpn_parse(
2817 rrd_set_error("invalid rpn expression in: %s",line);
2822 default: rrd_set_error("Big oops");
2824 if (rrd_test_error()) {
2831 rrd_set_error("can't make a graph without contents");
2832 im_free(im); /* ??? is this set ??? */
2837 rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
2839 if ((im->gdes[im->gdes_c-1].vidx=find_var(im,varname))==-1) {
2840 rrd_set_error("Unknown variable '%s' in %s",varname,err);
2846 rrd_graph_color(image_desc_t *im, char *var, char *err, int optional)
2849 graph_desc_t *gdp=&im->gdes[im->gdes_c-1];
2851 color=strstr(var,"#");
2854 rrd_set_error("Found no color in %s",err);
2863 rest=strstr(color,":");
2871 sscanf(color,"#%6x%n",&col,&n);
2872 col = (col << 8) + 0xff /* shift left by 8 */;
2873 if (n!=7) rrd_set_error("Color problem in %s",err);
2876 sscanf(color,"#%8x%n",&col,&n);
2879 rrd_set_error("Color problem in %s",err);
2881 if (rrd_test_error()) return 0;
2887 rrd_graph_check_CF(image_desc_t *im, char *symname, char *err)
2889 if ((im->gdes[im->gdes_c-1].cf=cf_conv(symname))==-1) {
2890 rrd_set_error("Unknown CF '%s' in %s",symname,err);
2896 rrd_graph_legend(graph_desc_t *gdp, char *line)
2900 i=scan_for_col(line,FMT_LEG_LEN,gdp->legend);
2902 return (strlen(&line[i])==0);
2906 int bad_format(char *fmt) {
2911 while (*ptr != '\0') {
2912 if (*ptr == '%') {ptr++;
2913 if (*ptr == '\0') return 1;
2914 while ((*ptr >= '0' && *ptr <= '9') || *ptr == '.') {
2917 if (*ptr == '\0') return 1;
2921 if (*ptr == '\0') return 1;
2922 if (*ptr == 'e' || *ptr == 'f') {
2924 } else { return 1; }
2926 else if (*ptr == 's' || *ptr == 'S' || *ptr == '%') { ++ptr; }
2935 vdef_parse(gdes,str)
2936 struct graph_desc_t *gdes;
2939 /* A VDEF currently is either "func" or "param,func"
2940 * so the parsing is rather simple. Change if needed.
2947 sscanf(str,"%le,%29[A-Z]%n",¶m,func,&n);
2948 if (n==strlen(str)) { /* matched */
2952 sscanf(str,"%29[A-Z]%n",func,&n);
2953 if (n==strlen(str)) { /* matched */
2956 rrd_set_error("Unknown function string '%s' in VDEF '%s'"
2963 if (!strcmp("PERCENT",func)) gdes->vf.op = VDEF_PERCENT;
2964 else if (!strcmp("MAXIMUM",func)) gdes->vf.op = VDEF_MAXIMUM;
2965 else if (!strcmp("AVERAGE",func)) gdes->vf.op = VDEF_AVERAGE;
2966 else if (!strcmp("MINIMUM",func)) gdes->vf.op = VDEF_MINIMUM;
2967 else if (!strcmp("TOTAL", func)) gdes->vf.op = VDEF_TOTAL;
2968 else if (!strcmp("FIRST", func)) gdes->vf.op = VDEF_FIRST;
2969 else if (!strcmp("LAST", func)) gdes->vf.op = VDEF_LAST;
2971 rrd_set_error("Unknown function '%s' in VDEF '%s'\n"
2978 switch (gdes->vf.op) {
2980 if (isnan(param)) { /* no parameter given */
2981 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n"
2987 if (param>=0.0 && param<=100.0) {
2988 gdes->vf.param = param;
2989 gdes->vf.val = DNAN; /* undefined */
2990 gdes->vf.when = 0; /* undefined */
2992 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n"
3006 gdes->vf.param = DNAN;
3007 gdes->vf.val = DNAN;
3010 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n"
3025 graph_desc_t *src,*dst;
3029 dst = &im->gdes[gdi];
3030 src = &im->gdes[dst->vidx];
3031 data = src->data + src->ds;
3032 steps = (src->end - src->start) / src->step;
3035 printf("DEBUG: start == %lu, end == %lu, %lu steps\n"
3042 switch (dst->vf.op) {
3043 case VDEF_PERCENT: {
3044 rrd_value_t * array;
3048 if ((array = malloc(steps*sizeof(double)))==NULL) {
3049 rrd_set_error("malloc VDEV_PERCENT");
3052 for (step=0;step < steps; step++) {
3053 array[step]=data[step*src->ds_cnt];
3055 qsort(array,step,sizeof(double),vdef_percent_compar);
3057 field = (steps-1)*dst->vf.param/100;
3058 dst->vf.val = array[field];
3059 dst->vf.when = 0; /* no time component */
3061 for(step=0;step<steps;step++)
3062 printf("DEBUG: %3li:%10.2f %c\n",step,array[step],step==field?'*':' ');
3068 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3069 if (step == steps) {
3073 dst->vf.val = data[step*src->ds_cnt];
3074 dst->vf.when = src->start + (step+1)*src->step;
3076 while (step != steps) {
3077 if (finite(data[step*src->ds_cnt])) {
3078 if (data[step*src->ds_cnt] > dst->vf.val) {
3079 dst->vf.val = data[step*src->ds_cnt];
3080 dst->vf.when = src->start + (step+1)*src->step;
3087 case VDEF_AVERAGE: {
3090 for (step=0;step<steps;step++) {
3091 if (finite(data[step*src->ds_cnt])) {
3092 sum += data[step*src->ds_cnt];
3097 if (dst->vf.op == VDEF_TOTAL) {
3098 dst->vf.val = sum*src->step;
3099 dst->vf.when = cnt*src->step; /* not really "when" */
3101 dst->vf.val = sum/cnt;
3102 dst->vf.when = 0; /* no time component */
3112 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3113 if (step == steps) {
3117 dst->vf.val = data[step*src->ds_cnt];
3118 dst->vf.when = src->start + (step+1)*src->step;
3120 while (step != steps) {
3121 if (finite(data[step*src->ds_cnt])) {
3122 if (data[step*src->ds_cnt] < dst->vf.val) {
3123 dst->vf.val = data[step*src->ds_cnt];
3124 dst->vf.when = src->start + (step+1)*src->step;
3131 /* The time value returned here is one step before the
3132 * actual time value. This is the start of the first
3136 while (step != steps && isnan(data[step*src->ds_cnt])) step++;
3137 if (step == steps) { /* all entries were NaN */
3141 dst->vf.val = data[step*src->ds_cnt];
3142 dst->vf.when = src->start + step*src->step;
3146 /* The time value returned here is the
3147 * actual time value. This is the end of the last
3151 while (step >= 0 && isnan(data[step*src->ds_cnt])) step--;
3152 if (step < 0) { /* all entries were NaN */
3156 dst->vf.val = data[step*src->ds_cnt];
3157 dst->vf.when = src->start + (step+1)*src->step;
3164 /* NaN < -INF < finite_values < INF */
3166 vdef_percent_compar(a,b)
3169 /* Equality is not returned; this doesn't hurt except
3170 * (maybe) for a little performance.
3173 /* First catch NaN values. They are smallest */
3174 if (isnan( *(double *)a )) return -1;
3175 if (isnan( *(double *)b )) return 1;
3177 /* NaN doesn't reach this part so INF and -INF are extremes.
3178 * The sign from isinf() is compatible with the sign we return
3180 if (isinf( *(double *)a )) return isinf( *(double *)a );
3181 if (isinf( *(double *)b )) return isinf( *(double *)b );
3183 /* If we reach this, both values must be finite */
3184 if ( *(double *)a < *(double *)b ) return -1; else return 1;