1 /****************************************************************************
2 * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
3 ****************************************************************************
4 * rrd__graph.c produce graphs from data in rrdfiles
5 ****************************************************************************/
20 #include "plbasename.h"
23 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
32 #ifdef HAVE_LANGINFO_H
36 #include "rrd_graph.h"
37 #include "rrd_client.h"
39 /* some constant definitions */
43 #ifndef RRD_DEFAULT_FONT
44 /* there is special code later to pick Cour.ttf when running on windows */
45 #define RRD_DEFAULT_FONT "DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier"
48 text_prop_t text_prop[] = {
49 {8.0, RRD_DEFAULT_FONT,NULL}
51 {9.0, RRD_DEFAULT_FONT,NULL}
53 {7.0, RRD_DEFAULT_FONT,NULL}
55 {8.0, RRD_DEFAULT_FONT,NULL}
57 {8.0, RRD_DEFAULT_FONT,NULL} /* legend */
59 {5.5, RRD_DEFAULT_FONT,NULL} /* watermark */
62 char week_fmt[128] = "Week %V";
65 {0, 0, TMT_SECOND, 30, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
67 {2, 0, TMT_MINUTE, 1, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
69 {5, 0, TMT_MINUTE, 2, TMT_MINUTE, 10, TMT_MINUTE, 10, 0, "%H:%M"}
71 {10, 0, TMT_MINUTE, 5, TMT_MINUTE, 20, TMT_MINUTE, 20, 0, "%H:%M"}
73 {30, 0, TMT_MINUTE, 10, TMT_HOUR, 1, TMT_HOUR, 1, 0, "%H:%M"}
75 {60, 0, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 2, 0, "%H:%M"}
77 {60, 24 * 3600, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 6, 0, "%a %H:%M"}
79 {180, 0, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 6, 0, "%H:%M"}
81 {180, 24 * 3600, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 12, 0, "%a %H:%M"}
83 /*{300, 0, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly */
84 {600, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%a"}
86 {1200, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%d"}
88 {1800, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a %d"}
90 {2400, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a"}
92 {3600, 0, TMT_DAY, 1, TMT_WEEK, 1, TMT_WEEK, 1, 7 * 24 * 3600, week_fmt}
94 {3 * 3600, 0, TMT_WEEK, 1, TMT_MONTH, 1, TMT_WEEK, 2, 7 * 24 * 3600, week_fmt}
96 {6 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 1, TMT_MONTH, 1, 30 * 24 * 3600,
99 {48 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 3, TMT_MONTH, 3, 30 * 24 * 3600,
102 {315360, 0, TMT_MONTH, 3, TMT_YEAR, 1, TMT_YEAR, 1, 365 * 24 * 3600, "%Y"}
104 {10 * 24 * 3600, 0, TMT_YEAR, 1, TMT_YEAR, 1, TMT_YEAR, 1,
105 365 * 24 * 3600, "%y"}
107 {-1, 0, TMT_MONTH, 0, TMT_MONTH, 0, TMT_MONTH, 0, 0, ""}
110 /* sensible y label intervals ...*/
134 {20.0, {1, 5, 10, 20}
140 {100.0, {1, 2, 5, 10}
143 {200.0, {1, 5, 10, 20}
146 {500.0, {1, 2, 4, 10}
154 gfx_color_t graph_col[] = /* default colors */
156 {1.00, 1.00, 1.00, 1.00}, /* canvas */
157 {0.95, 0.95, 0.95, 1.00}, /* background */
158 {0.81, 0.81, 0.81, 1.00}, /* shade A */
159 {0.62, 0.62, 0.62, 1.00}, /* shade B */
160 {0.56, 0.56, 0.56, 0.75}, /* grid */
161 {0.87, 0.31, 0.31, 0.60}, /* major grid */
162 {0.00, 0.00, 0.00, 1.00}, /* font */
163 {0.50, 0.12, 0.12, 1.00}, /* arrow */
164 {0.12, 0.12, 0.12, 1.00}, /* axis */
165 {0.00, 0.00, 0.00, 1.00} /* frame */
172 # define DPRINT(x) (void)(printf x, printf("\n"))
178 /* initialize with xtr(im,0); */
186 pixie = (double) im->xsize / (double) (im->end - im->start);
189 return (int) ((double) im->xorigin + pixie * (mytime - im->start));
192 /* translate data values into y coordinates */
201 if (!im->logarithmic)
202 pixie = (double) im->ysize / (im->maxval - im->minval);
205 (double) im->ysize / (log10(im->maxval) - log10(im->minval));
207 } else if (!im->logarithmic) {
208 yval = im->yorigin - pixie * (value - im->minval);
210 if (value < im->minval) {
213 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
221 /* conversion function for symbolic entry names */
224 #define conv_if(VV,VVV) \
225 if (strcmp(#VV, string) == 0) return VVV ;
231 conv_if(PRINT, GF_PRINT);
232 conv_if(GPRINT, GF_GPRINT);
233 conv_if(COMMENT, GF_COMMENT);
234 conv_if(HRULE, GF_HRULE);
235 conv_if(VRULE, GF_VRULE);
236 conv_if(LINE, GF_LINE);
237 conv_if(AREA, GF_AREA);
238 conv_if(GRAD, GF_GRAD);
239 conv_if(STACK, GF_STACK);
240 conv_if(TICK, GF_TICK);
241 conv_if(TEXTALIGN, GF_TEXTALIGN);
242 conv_if(DEF, GF_DEF);
243 conv_if(CDEF, GF_CDEF);
244 conv_if(VDEF, GF_VDEF);
245 conv_if(XPORT, GF_XPORT);
246 conv_if(SHIFT, GF_SHIFT);
248 return (enum gf_en)(-1);
251 enum gfx_if_en if_conv(
255 conv_if(PNG, IF_PNG);
256 conv_if(SVG, IF_SVG);
257 conv_if(EPS, IF_EPS);
258 conv_if(PDF, IF_PDF);
260 return (enum gfx_if_en)(-1);
263 enum tmt_en tmt_conv(
267 conv_if(SECOND, TMT_SECOND);
268 conv_if(MINUTE, TMT_MINUTE);
269 conv_if(HOUR, TMT_HOUR);
270 conv_if(DAY, TMT_DAY);
271 conv_if(WEEK, TMT_WEEK);
272 conv_if(MONTH, TMT_MONTH);
273 conv_if(YEAR, TMT_YEAR);
274 return (enum tmt_en)(-1);
277 enum grc_en grc_conv(
281 conv_if(BACK, GRC_BACK);
282 conv_if(CANVAS, GRC_CANVAS);
283 conv_if(SHADEA, GRC_SHADEA);
284 conv_if(SHADEB, GRC_SHADEB);
285 conv_if(GRID, GRC_GRID);
286 conv_if(MGRID, GRC_MGRID);
287 conv_if(FONT, GRC_FONT);
288 conv_if(ARROW, GRC_ARROW);
289 conv_if(AXIS, GRC_AXIS);
290 conv_if(FRAME, GRC_FRAME);
292 return (enum grc_en)(-1);
295 enum text_prop_en text_prop_conv(
299 conv_if(DEFAULT, TEXT_PROP_DEFAULT);
300 conv_if(TITLE, TEXT_PROP_TITLE);
301 conv_if(AXIS, TEXT_PROP_AXIS);
302 conv_if(UNIT, TEXT_PROP_UNIT);
303 conv_if(LEGEND, TEXT_PROP_LEGEND);
304 conv_if(WATERMARK, TEXT_PROP_WATERMARK);
305 return (enum text_prop_en)(-1);
315 cairo_status_t status = (cairo_status_t) 0;
320 if (im->daemon_addr != NULL)
321 free(im->daemon_addr);
323 for (i = 0; i < (unsigned) im->gdes_c; i++) {
324 if (im->gdes[i].data_first) {
325 /* careful here, because a single pointer can occur several times */
326 free(im->gdes[i].data);
327 if (im->gdes[i].ds_namv) {
328 for (ii = 0; ii < im->gdes[i].ds_cnt; ii++)
329 free(im->gdes[i].ds_namv[ii]);
330 free(im->gdes[i].ds_namv);
333 /* free allocated memory used for dashed lines */
334 if (im->gdes[i].p_dashes != NULL)
335 free(im->gdes[i].p_dashes);
337 free(im->gdes[i].p_data);
338 free(im->gdes[i].rpnp);
342 for (i = 0; i < DIM(text_prop);i++){
343 pango_font_description_free(im->text_prop[i].font_desc);
344 im->text_prop[i].font_desc = NULL;
347 if (im->font_options)
348 cairo_font_options_destroy(im->font_options);
351 status = cairo_status(im->cr);
352 cairo_destroy(im->cr);
356 if (im->rendered_image) {
357 free(im->rendered_image);
361 g_object_unref (im->layout);
365 cairo_surface_destroy(im->surface);
368 fprintf(stderr, "OOPS: Cairo has issues it can't even die: %s\n",
369 cairo_status_to_string(status));
374 /* find SI magnitude symbol for the given number*/
376 image_desc_t *im, /* image description */
382 char *symbol[] = { "a", /* 10e-18 Atto */
383 "f", /* 10e-15 Femto */
384 "p", /* 10e-12 Pico */
385 "n", /* 10e-9 Nano */
386 "u", /* 10e-6 Micro */
387 "m", /* 10e-3 Milli */
392 "T", /* 10e12 Tera */
393 "P", /* 10e15 Peta */
400 if (*value == 0.0 || isnan(*value)) {
404 sindex = floor(log(fabs(*value)) / log((double) im->base));
405 *magfact = pow((double) im->base, (double) sindex);
406 (*value) /= (*magfact);
408 if (sindex <= symbcenter && sindex >= -symbcenter) {
409 (*symb_ptr) = symbol[sindex + symbcenter];
417 static char si_symbol[] = {
418 'y', /* 10e-24 Yocto */
419 'z', /* 10e-21 Zepto */
420 'a', /* 10e-18 Atto */
421 'f', /* 10e-15 Femto */
422 'p', /* 10e-12 Pico */
423 'n', /* 10e-9 Nano */
424 'u', /* 10e-6 Micro */
425 'm', /* 10e-3 Milli */
430 'T', /* 10e12 Tera */
431 'P', /* 10e15 Peta */
433 'Z', /* 10e21 Zeta */
434 'Y' /* 10e24 Yotta */
436 static const int si_symbcenter = 8;
438 /* find SI magnitude symbol for the numbers on the y-axis*/
440 image_desc_t *im /* image description */
444 double digits, viewdigits = 0;
447 floor(log(max(fabs(im->minval), fabs(im->maxval))) /
448 log((double) im->base));
450 if (im->unitsexponent != 9999) {
451 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
452 viewdigits = floor((double)(im->unitsexponent / 3));
457 im->magfact = pow((double) im->base, digits);
460 printf("digits %6.3f im->magfact %6.3f\n", digits, im->magfact);
463 im->viewfactor = im->magfact / pow((double) im->base, viewdigits);
465 if (((viewdigits + si_symbcenter) < sizeof(si_symbol)) &&
466 ((viewdigits + si_symbcenter) >= 0))
467 im->symbol = si_symbol[(int) viewdigits + si_symbcenter];
472 /* move min and max values around to become sensible */
477 double sensiblevalues[] = { 1000.0, 900.0, 800.0, 750.0, 700.0,
478 600.0, 500.0, 400.0, 300.0, 250.0,
479 200.0, 125.0, 100.0, 90.0, 80.0,
480 75.0, 70.0, 60.0, 50.0, 40.0, 30.0,
481 25.0, 20.0, 10.0, 9.0, 8.0,
482 7.0, 6.0, 5.0, 4.0, 3.5, 3.0,
483 2.5, 2.0, 1.8, 1.5, 1.2, 1.0,
484 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.0, -1
487 double scaled_min, scaled_max;
494 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
495 im->minval, im->maxval, im->magfact);
498 if (isnan(im->ygridstep)) {
499 if (im->extra_flags & ALTAUTOSCALE) {
500 /* measure the amplitude of the function. Make sure that
501 graph boundaries are slightly higher then max/min vals
502 so we can see amplitude on the graph */
505 delt = im->maxval - im->minval;
507 fact = 2.0 * pow(10.0,
509 (max(fabs(im->minval), fabs(im->maxval)) /
512 adj = (fact - delt) * 0.55;
515 ("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n",
516 im->minval, im->maxval, delt, fact, adj);
521 } else if (im->extra_flags & ALTAUTOSCALE_MIN) {
522 /* measure the amplitude of the function. Make sure that
523 graph boundaries are slightly lower than min vals
524 so we can see amplitude on the graph */
525 adj = (im->maxval - im->minval) * 0.1;
527 } else if (im->extra_flags & ALTAUTOSCALE_MAX) {
528 /* measure the amplitude of the function. Make sure that
529 graph boundaries are slightly higher than max vals
530 so we can see amplitude on the graph */
531 adj = (im->maxval - im->minval) * 0.1;
534 scaled_min = im->minval / im->magfact;
535 scaled_max = im->maxval / im->magfact;
537 for (i = 1; sensiblevalues[i] > 0; i++) {
538 if (sensiblevalues[i - 1] >= scaled_min &&
539 sensiblevalues[i] <= scaled_min)
540 im->minval = sensiblevalues[i] * (im->magfact);
542 if (-sensiblevalues[i - 1] <= scaled_min &&
543 -sensiblevalues[i] >= scaled_min)
544 im->minval = -sensiblevalues[i - 1] * (im->magfact);
546 if (sensiblevalues[i - 1] >= scaled_max &&
547 sensiblevalues[i] <= scaled_max)
548 im->maxval = sensiblevalues[i - 1] * (im->magfact);
550 if (-sensiblevalues[i - 1] <= scaled_max &&
551 -sensiblevalues[i] >= scaled_max)
552 im->maxval = -sensiblevalues[i] * (im->magfact);
556 /* adjust min and max to the grid definition if there is one */
557 im->minval = (double) im->ylabfact * im->ygridstep *
558 floor(im->minval / ((double) im->ylabfact * im->ygridstep));
559 im->maxval = (double) im->ylabfact * im->ygridstep *
560 ceil(im->maxval / ((double) im->ylabfact * im->ygridstep));
564 fprintf(stderr, "SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
565 im->minval, im->maxval, im->magfact);
573 if (isnan(im->minval) || isnan(im->maxval))
576 if (im->logarithmic) {
577 double ya, yb, ypix, ypixfrac;
578 double log10_range = log10(im->maxval) - log10(im->minval);
580 ya = pow((double) 10, floor(log10(im->minval)));
581 while (ya < im->minval)
584 return; /* don't have y=10^x gridline */
586 if (yb <= im->maxval) {
587 /* we have at least 2 y=10^x gridlines.
588 Make sure distance between them in pixels
589 are an integer by expanding im->maxval */
590 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
591 double factor = y_pixel_delta / floor(y_pixel_delta);
592 double new_log10_range = factor * log10_range;
593 double new_ymax_log10 = log10(im->minval) + new_log10_range;
595 im->maxval = pow(10, new_ymax_log10);
596 ytr(im, DNAN); /* reset precalc */
597 log10_range = log10(im->maxval) - log10(im->minval);
599 /* make sure first y=10^x gridline is located on
600 integer pixel position by moving scale slightly
601 downwards (sub-pixel movement) */
602 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
603 ypixfrac = ypix - floor(ypix);
604 if (ypixfrac > 0 && ypixfrac < 1) {
605 double yfrac = ypixfrac / im->ysize;
607 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
608 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
609 ytr(im, DNAN); /* reset precalc */
612 /* Make sure we have an integer pixel distance between
613 each minor gridline */
614 double ypos1 = ytr(im, im->minval);
615 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
616 double y_pixel_delta = ypos1 - ypos2;
617 double factor = y_pixel_delta / floor(y_pixel_delta);
618 double new_range = factor * (im->maxval - im->minval);
619 double gridstep = im->ygrid_scale.gridstep;
620 double minor_y, minor_y_px, minor_y_px_frac;
622 if (im->maxval > 0.0)
623 im->maxval = im->minval + new_range;
625 im->minval = im->maxval - new_range;
626 ytr(im, DNAN); /* reset precalc */
627 /* make sure first minor gridline is on integer pixel y coord */
628 minor_y = gridstep * floor(im->minval / gridstep);
629 while (minor_y < im->minval)
631 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
632 minor_y_px_frac = minor_y_px - floor(minor_y_px);
633 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
634 double yfrac = minor_y_px_frac / im->ysize;
635 double range = im->maxval - im->minval;
637 im->minval = im->minval - yfrac * range;
638 im->maxval = im->maxval - yfrac * range;
639 ytr(im, DNAN); /* reset precalc */
641 calc_horizontal_grid(im); /* recalc with changed im->maxval */
645 /* reduce data reimplementation by Alex */
648 enum cf_en cf, /* which consolidation function ? */
649 unsigned long cur_step, /* step the data currently is in */
650 time_t *start, /* start, end and step as requested ... */
651 time_t *end, /* ... by the application will be ... */
652 unsigned long *step, /* ... adjusted to represent reality */
653 unsigned long *ds_cnt, /* number of data sources in file */
655 { /* two dimensional array containing the data */
656 int i, reduce_factor = ceil((double) (*step) / (double) cur_step);
657 unsigned long col, dst_row, row_cnt, start_offset, end_offset, skiprows =
659 rrd_value_t *srcptr, *dstptr;
661 (*step) = cur_step * reduce_factor; /* set new step size for reduced data */
664 row_cnt = ((*end) - (*start)) / cur_step;
670 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
671 row_cnt, reduce_factor, *start, *end, cur_step);
672 for (col = 0; col < row_cnt; col++) {
673 printf("time %10lu: ", *start + (col + 1) * cur_step);
674 for (i = 0; i < *ds_cnt; i++)
675 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
680 /* We have to combine [reduce_factor] rows of the source
681 ** into one row for the destination. Doing this we also
682 ** need to take care to combine the correct rows. First
683 ** alter the start and end time so that they are multiples
684 ** of the new step time. We cannot reduce the amount of
685 ** time so we have to move the end towards the future and
686 ** the start towards the past.
688 end_offset = (*end) % (*step);
689 start_offset = (*start) % (*step);
691 /* If there is a start offset (which cannot be more than
692 ** one destination row), skip the appropriate number of
693 ** source rows and one destination row. The appropriate
694 ** number is what we do know (start_offset/cur_step) of
695 ** the new interval (*step/cur_step aka reduce_factor).
698 printf("start_offset: %lu end_offset: %lu\n", start_offset, end_offset);
699 printf("row_cnt before: %lu\n", row_cnt);
702 (*start) = (*start) - start_offset;
703 skiprows = reduce_factor - start_offset / cur_step;
704 srcptr += skiprows * *ds_cnt;
705 for (col = 0; col < (*ds_cnt); col++)
710 printf("row_cnt between: %lu\n", row_cnt);
713 /* At the end we have some rows that are not going to be
714 ** used, the amount is end_offset/cur_step
717 (*end) = (*end) - end_offset + (*step);
718 skiprows = end_offset / cur_step;
722 printf("row_cnt after: %lu\n", row_cnt);
725 /* Sanity check: row_cnt should be multiple of reduce_factor */
726 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
728 if (row_cnt % reduce_factor) {
729 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
730 row_cnt, reduce_factor);
731 printf("BUG in reduce_data()\n");
735 /* Now combine reduce_factor intervals at a time
736 ** into one interval for the destination.
739 for (dst_row = 0; (long int) row_cnt >= reduce_factor; dst_row++) {
740 for (col = 0; col < (*ds_cnt); col++) {
741 rrd_value_t newval = DNAN;
742 unsigned long validval = 0;
744 for (i = 0; i < reduce_factor; i++) {
745 if (isnan(srcptr[i * (*ds_cnt) + col])) {
750 newval = srcptr[i * (*ds_cnt) + col];
759 newval += srcptr[i * (*ds_cnt) + col];
762 newval = min(newval, srcptr[i * (*ds_cnt) + col]);
765 /* an interval contains a failure if any subintervals contained a failure */
767 newval = max(newval, srcptr[i * (*ds_cnt) + col]);
770 newval = srcptr[i * (*ds_cnt) + col];
796 srcptr += (*ds_cnt) * reduce_factor;
797 row_cnt -= reduce_factor;
799 /* If we had to alter the endtime, we didn't have enough
800 ** source rows to fill the last row. Fill it with NaN.
803 for (col = 0; col < (*ds_cnt); col++)
806 row_cnt = ((*end) - (*start)) / *step;
808 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
809 row_cnt, *start, *end, *step);
810 for (col = 0; col < row_cnt; col++) {
811 printf("time %10lu: ", *start + (col + 1) * (*step));
812 for (i = 0; i < *ds_cnt; i++)
813 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
820 /* get the data required for the graphs from the
829 /* pull the data from the rrd files ... */
830 for (i = 0; i < (int) im->gdes_c; i++) {
831 /* only GF_DEF elements fetch data */
832 if (im->gdes[i].gf != GF_DEF)
836 /* do we have it already ? */
837 for (ii = 0; ii < i; ii++) {
838 if (im->gdes[ii].gf != GF_DEF)
840 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
841 && (im->gdes[i].cf == im->gdes[ii].cf)
842 && (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
843 && (im->gdes[i].start_orig == im->gdes[ii].start_orig)
844 && (im->gdes[i].end_orig == im->gdes[ii].end_orig)
845 && (im->gdes[i].step_orig == im->gdes[ii].step_orig)) {
846 /* OK, the data is already there.
847 ** Just copy the header portion
849 im->gdes[i].start = im->gdes[ii].start;
850 im->gdes[i].end = im->gdes[ii].end;
851 im->gdes[i].step = im->gdes[ii].step;
852 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
853 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
854 im->gdes[i].data = im->gdes[ii].data;
855 im->gdes[i].data_first = 0;
862 unsigned long ft_step = im->gdes[i].step; /* ft_step will record what we got from fetch */
863 const char *rrd_daemon;
866 if (im->gdes[i].daemon[0] != 0)
867 rrd_daemon = im->gdes[i].daemon;
869 rrd_daemon = im->daemon_addr;
871 /* "daemon" may be NULL. ENV_RRDCACHED_ADDRESS is evaluated in that
872 * case. If "daemon" holds the same value as in the previous
873 * iteration, no actual new connection is established - the
874 * existing connection is re-used. */
875 rrdc_connect (rrd_daemon);
877 /* If connecting was successfull, use the daemon to query the data.
878 * If there is no connection, for example because no daemon address
879 * was specified, (try to) use the local file directly. */
880 if (rrdc_is_connected (rrd_daemon))
882 status = rrdc_fetch (im->gdes[i].rrd,
883 cf_to_string (im->gdes[i].cf),
888 &im->gdes[i].ds_namv,
895 if ((rrd_fetch_fn(im->gdes[i].rrd,
901 &im->gdes[i].ds_namv,
902 &im->gdes[i].data)) == -1) {
906 im->gdes[i].data_first = 1;
908 /* must reduce to at least im->step
909 otherwhise we end up with more data than we can handle in the
910 chart and visibility of data will be random */
911 im->gdes[i].step = max(im->gdes[i].step,im->step);
912 if (ft_step < im->gdes[i].step) {
913 reduce_data(im->gdes[i].cf_reduce,
918 &im->gdes[i].ds_cnt, &im->gdes[i].data);
920 im->gdes[i].step = ft_step;
924 /* lets see if the required data source is really there */
925 for (ii = 0; ii < (int) im->gdes[i].ds_cnt; ii++) {
926 if (strcmp(im->gdes[i].ds_namv[ii], im->gdes[i].ds_nam) == 0) {
930 if (im->gdes[i].ds == -1) {
931 rrd_set_error("No DS called '%s' in '%s'",
932 im->gdes[i].ds_nam, im->gdes[i].rrd);
940 /* evaluate the expressions in the CDEF functions */
942 /*************************************************************
944 *************************************************************/
946 long find_var_wrapper(
950 return find_var((image_desc_t *) arg1, key);
953 /* find gdes containing var*/
960 for (ii = 0; ii < im->gdes_c - 1; ii++) {
961 if ((im->gdes[ii].gf == GF_DEF
962 || im->gdes[ii].gf == GF_VDEF || im->gdes[ii].gf == GF_CDEF)
963 && (strcmp(im->gdes[ii].vname, key) == 0)) {
970 /* find the greatest common divisor for all the numbers
971 in the 0 terminated num array */
978 for (i = 0; num[i + 1] != 0; i++) {
980 rest = num[i] % num[i + 1];
986 /* return i==0?num[i]:num[i-1]; */
990 /* run the rpn calculator on all the VDEF and CDEF arguments */
997 long *steparray, rpi;
1000 rpnstack_t rpnstack;
1002 rpnstack_init(&rpnstack);
1004 for (gdi = 0; gdi < im->gdes_c; gdi++) {
1005 /* Look for GF_VDEF and GF_CDEF in the same loop,
1006 * so CDEFs can use VDEFs and vice versa
1008 switch (im->gdes[gdi].gf) {
1012 graph_desc_t *vdp = &im->gdes[im->gdes[gdi].vidx];
1014 /* remove current shift */
1015 vdp->start -= vdp->shift;
1016 vdp->end -= vdp->shift;
1019 if (im->gdes[gdi].shidx >= 0)
1020 vdp->shift = im->gdes[im->gdes[gdi].shidx].vf.val;
1023 vdp->shift = im->gdes[gdi].shval;
1025 /* normalize shift to multiple of consolidated step */
1026 vdp->shift = (vdp->shift / (long) vdp->step) * (long) vdp->step;
1029 vdp->start += vdp->shift;
1030 vdp->end += vdp->shift;
1034 /* A VDEF has no DS. This also signals other parts
1035 * of rrdtool that this is a VDEF value, not a CDEF.
1037 im->gdes[gdi].ds_cnt = 0;
1038 if (vdef_calc(im, gdi)) {
1039 rrd_set_error("Error processing VDEF '%s'",
1040 im->gdes[gdi].vname);
1041 rpnstack_free(&rpnstack);
1046 im->gdes[gdi].ds_cnt = 1;
1047 im->gdes[gdi].ds = 0;
1048 im->gdes[gdi].data_first = 1;
1049 im->gdes[gdi].start = 0;
1050 im->gdes[gdi].end = 0;
1055 /* Find the variables in the expression.
1056 * - VDEF variables are substituted by their values
1057 * and the opcode is changed into OP_NUMBER.
1058 * - CDEF variables are analized for their step size,
1059 * the lowest common denominator of all the step
1060 * sizes of the data sources involved is calculated
1061 * and the resulting number is the step size for the
1062 * resulting data source.
1064 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1065 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1066 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1067 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1069 if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
1072 ("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
1073 im->gdes[gdi].vname, im->gdes[ptr].vname);
1074 printf("DEBUG: value from vdef is %f\n",
1075 im->gdes[ptr].vf.val);
1077 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
1078 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
1079 } else { /* normal variables and PREF(variables) */
1081 /* add one entry to the array that keeps track of the step sizes of the
1082 * data sources going into the CDEF. */
1084 (long*)rrd_realloc(steparray,
1086 1) * sizeof(*steparray))) == NULL) {
1087 rrd_set_error("realloc steparray");
1088 rpnstack_free(&rpnstack);
1092 steparray[stepcnt - 1] = im->gdes[ptr].step;
1094 /* adjust start and end of cdef (gdi) so
1095 * that it runs from the latest start point
1096 * to the earliest endpoint of any of the
1097 * rras involved (ptr)
1100 if (im->gdes[gdi].start < im->gdes[ptr].start)
1101 im->gdes[gdi].start = im->gdes[ptr].start;
1103 if (im->gdes[gdi].end == 0 ||
1104 im->gdes[gdi].end > im->gdes[ptr].end)
1105 im->gdes[gdi].end = im->gdes[ptr].end;
1107 /* store pointer to the first element of
1108 * the rra providing data for variable,
1109 * further save step size and data source
1112 im->gdes[gdi].rpnp[rpi].data =
1113 im->gdes[ptr].data + im->gdes[ptr].ds;
1114 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
1115 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
1117 /* backoff the *.data ptr; this is done so
1118 * rpncalc() function doesn't have to treat
1119 * the first case differently
1121 } /* if ds_cnt != 0 */
1122 } /* if OP_VARIABLE */
1123 } /* loop through all rpi */
1125 /* move the data pointers to the correct period */
1126 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1127 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1128 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1129 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1131 im->gdes[gdi].start - im->gdes[ptr].start;
1134 im->gdes[gdi].rpnp[rpi].data +=
1135 (diff / im->gdes[ptr].step) *
1136 im->gdes[ptr].ds_cnt;
1140 if (steparray == NULL) {
1141 rrd_set_error("rpn expressions without DEF"
1142 " or CDEF variables are not supported");
1143 rpnstack_free(&rpnstack);
1146 steparray[stepcnt] = 0;
1147 /* Now find the resulting step. All steps in all
1148 * used RRAs have to be visited
1150 im->gdes[gdi].step = lcd(steparray);
1152 if ((im->gdes[gdi].data = (rrd_value_t*)malloc(((im->gdes[gdi].end -
1153 im->gdes[gdi].start)
1154 / im->gdes[gdi].step)
1155 * sizeof(double))) == NULL) {
1156 rrd_set_error("malloc im->gdes[gdi].data");
1157 rpnstack_free(&rpnstack);
1161 /* Step through the new cdef results array and
1162 * calculate the values
1164 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
1165 now <= im->gdes[gdi].end; now += im->gdes[gdi].step) {
1166 rpnp_t *rpnp = im->gdes[gdi].rpnp;
1168 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
1169 * in this case we are advancing by timesteps;
1170 * we use the fact that time_t is a synonym for long
1172 if (rpn_calc(rpnp, &rpnstack, (long) now,
1173 im->gdes[gdi].data, ++dataidx) == -1) {
1174 /* rpn_calc sets the error string */
1175 rpnstack_free(&rpnstack);
1178 } /* enumerate over time steps within a CDEF */
1183 } /* enumerate over CDEFs */
1184 rpnstack_free(&rpnstack);
1188 /* from http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm */
1189 /* yes we are loosing precision by doing tos with floats instead of doubles
1190 but it seems more stable this way. */
1192 static int AlmostEqual2sComplement(
1198 int aInt = *(int *) &A;
1199 int bInt = *(int *) &B;
1202 /* Make sure maxUlps is non-negative and small enough that the
1203 default NAN won't compare as equal to anything. */
1205 /* assert(maxUlps > 0 && maxUlps < 4 * 1024 * 1024); */
1207 /* Make aInt lexicographically ordered as a twos-complement int */
1210 aInt = 0x80000000l - aInt;
1212 /* Make bInt lexicographically ordered as a twos-complement int */
1215 bInt = 0x80000000l - bInt;
1217 intDiff = abs(aInt - bInt);
1219 if (intDiff <= maxUlps)
1225 /* massage data so, that we get one value for each x coordinate in the graph */
1230 double pixstep = (double) (im->end - im->start)
1231 / (double) im->xsize; /* how much time
1232 passes in one pixel */
1234 double minval = DNAN, maxval = DNAN;
1236 unsigned long gr_time;
1238 /* memory for the processed data */
1239 for (i = 0; i < im->gdes_c; i++) {
1240 if ((im->gdes[i].gf == GF_LINE)
1241 || (im->gdes[i].gf == GF_AREA)
1242 || (im->gdes[i].gf == GF_TICK)
1243 || (im->gdes[i].gf == GF_GRAD)
1245 if ((im->gdes[i].p_data = (rrd_value_t*)malloc((im->xsize + 1)
1246 * sizeof(rrd_value_t))) == NULL) {
1247 rrd_set_error("malloc data_proc");
1253 for (i = 0; i < im->xsize; i++) { /* for each pixel */
1256 gr_time = im->start + pixstep * i; /* time of the current step */
1259 for (ii = 0; ii < im->gdes_c; ii++) {
1262 switch (im->gdes[ii].gf) {
1267 if (!im->gdes[ii].stack)
1269 value = im->gdes[ii].yrule;
1270 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1271 /* The time of the data doesn't necessarily match
1272 ** the time of the graph. Beware.
1274 vidx = im->gdes[ii].vidx;
1275 if (im->gdes[vidx].gf == GF_VDEF) {
1276 value = im->gdes[vidx].vf.val;
1278 if (((long int) gr_time >=
1279 (long int) im->gdes[vidx].start)
1280 && ((long int) gr_time <
1281 (long int) im->gdes[vidx].end)) {
1282 value = im->gdes[vidx].data[(unsigned long)
1288 im->gdes[vidx].step)
1289 * im->gdes[vidx].ds_cnt +
1296 if (!isnan(value)) {
1298 im->gdes[ii].p_data[i] = paintval;
1299 /* GF_TICK: the data values are not
1300 ** relevant for min and max
1302 if (finite(paintval) && im->gdes[ii].gf != GF_TICK) {
1303 if ((isnan(minval) || paintval < minval) &&
1304 !(im->logarithmic && paintval <= 0.0))
1306 if (isnan(maxval) || paintval > maxval)
1310 im->gdes[ii].p_data[i] = DNAN;
1315 ("STACK should already be turned into LINE or AREA here");
1324 /* if min or max have not been asigned a value this is because
1325 there was no data in the graph ... this is not good ...
1326 lets set these to dummy values then ... */
1328 if (im->logarithmic) {
1329 if (isnan(minval) || isnan(maxval) || maxval <= 0) {
1330 minval = 0.0; /* catching this right away below */
1333 /* in logarithm mode, where minval is smaller or equal
1334 to 0 make the beast just way smaller than maxval */
1336 minval = maxval / 10e8;
1339 if (isnan(minval) || isnan(maxval)) {
1345 /* adjust min and max values given by the user */
1346 /* for logscale we add something on top */
1347 if (isnan(im->minval)
1348 || ((!im->rigid) && im->minval > minval)
1350 if (im->logarithmic)
1351 im->minval = minval / 2.0;
1353 im->minval = minval;
1355 if (isnan(im->maxval)
1356 || (!im->rigid && im->maxval < maxval)
1358 if (im->logarithmic)
1359 im->maxval = maxval * 2.0;
1361 im->maxval = maxval;
1364 /* make sure min is smaller than max */
1365 if (im->minval > im->maxval) {
1367 im->minval = 0.99 * im->maxval;
1369 im->minval = 1.01 * im->maxval;
1372 /* make sure min and max are not equal */
1373 if (AlmostEqual2sComplement(im->minval, im->maxval, 4)) {
1379 /* make sure min and max are not both zero */
1380 if (AlmostEqual2sComplement(im->maxval, 0, 4)) {
1387 static int find_first_weekday(void){
1388 static int first_weekday = -1;
1389 if (first_weekday == -1){
1390 #ifdef HAVE__NL_TIME_WEEK_1STDAY
1391 /* according to http://sourceware.org/ml/libc-locales/2009-q1/msg00011.html */
1392 long week_1stday_l = (long) nl_langinfo (_NL_TIME_WEEK_1STDAY);
1393 if (week_1stday_l == 19971130) first_weekday = 0; /* Sun */
1394 else if (week_1stday_l == 19971201) first_weekday = 1; /* Mon */
1395 else first_weekday = 1; /* we go for a monday default */
1400 return first_weekday;
1403 /* identify the point where the first gridline, label ... gets placed */
1405 time_t find_first_time(
1406 time_t start, /* what is the initial time */
1407 enum tmt_en baseint, /* what is the basic interval */
1408 long basestep /* how many if these do we jump a time */
1413 localtime_r(&start, &tm);
1417 tm. tm_sec -= tm.tm_sec % basestep;
1422 tm. tm_min -= tm.tm_min % basestep;
1428 tm. tm_hour -= tm.tm_hour % basestep;
1432 /* we do NOT look at the basestep for this ... */
1439 /* we do NOT look at the basestep for this ... */
1443 tm. tm_mday -= tm.tm_wday - find_first_weekday();
1445 if (tm.tm_wday == 0 && find_first_weekday() > 0)
1446 tm. tm_mday -= 7; /* we want the *previous* week */
1454 tm. tm_mon -= tm.tm_mon % basestep;
1465 tm.tm_year + 1900) %basestep;
1471 /* identify the point where the next gridline, label ... gets placed */
1472 time_t find_next_time(
1473 time_t current, /* what is the initial time */
1474 enum tmt_en baseint, /* what is the basic interval */
1475 long basestep /* how many if these do we jump a time */
1481 localtime_r(¤t, &tm);
1485 case TMT_SECOND: limit = 7200; break;
1486 case TMT_MINUTE: limit = 120; break;
1487 case TMT_HOUR: limit = 2; break;
1488 default: limit = 2; break;
1493 tm. tm_sec += basestep;
1497 tm. tm_min += basestep;
1501 tm. tm_hour += basestep;
1505 tm. tm_mday += basestep;
1509 tm. tm_mday += 7 * basestep;
1513 tm. tm_mon += basestep;
1517 tm. tm_year += basestep;
1519 madetime = mktime(&tm);
1520 } while (madetime == -1 && limit-- >= 0); /* this is necessary to skip impossible times
1521 like the daylight saving time skips */
1527 /* calculate values required for PRINT and GPRINT functions */
1532 long i, ii, validsteps;
1535 int graphelement = 0;
1538 double magfact = -1;
1543 /* wow initializing tmvdef is quite a task :-) */
1544 time_t now = time(NULL);
1546 localtime_r(&now, &tmvdef);
1547 for (i = 0; i < im->gdes_c; i++) {
1548 vidx = im->gdes[i].vidx;
1549 switch (im->gdes[i].gf) {
1552 /* PRINT and GPRINT can now print VDEF generated values.
1553 * There's no need to do any calculations on them as these
1554 * calculations were already made.
1556 if (im->gdes[vidx].gf == GF_VDEF) { /* simply use vals */
1557 printval = im->gdes[vidx].vf.val;
1558 localtime_r(&im->gdes[vidx].vf.when, &tmvdef);
1559 } else { /* need to calculate max,min,avg etcetera */
1560 max_ii = ((im->gdes[vidx].end - im->gdes[vidx].start)
1561 / im->gdes[vidx].step * im->gdes[vidx].ds_cnt);
1564 for (ii = im->gdes[vidx].ds;
1565 ii < max_ii; ii += im->gdes[vidx].ds_cnt) {
1566 if (!finite(im->gdes[vidx].data[ii]))
1568 if (isnan(printval)) {
1569 printval = im->gdes[vidx].data[ii];
1574 switch (im->gdes[i].cf) {
1578 case CF_DEVSEASONAL:
1582 printval += im->gdes[vidx].data[ii];
1585 printval = min(printval, im->gdes[vidx].data[ii]);
1589 printval = max(printval, im->gdes[vidx].data[ii]);
1592 printval = im->gdes[vidx].data[ii];
1595 if (im->gdes[i].cf == CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1596 if (validsteps > 1) {
1597 printval = (printval / validsteps);
1600 } /* prepare printval */
1602 if (!im->gdes[i].strftm && (percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
1603 /* Magfact is set to -1 upon entry to print_calc. If it
1604 * is still less than 0, then we need to run auto_scale.
1605 * Otherwise, put the value into the correct units. If
1606 * the value is 0, then do not set the symbol or magnification
1607 * so next the calculation will be performed again. */
1608 if (magfact < 0.0) {
1609 auto_scale(im, &printval, &si_symb, &magfact);
1610 if (printval == 0.0)
1613 printval /= magfact;
1615 *(++percent_s) = 's';
1616 } else if (!im->gdes[i].strftm && strstr(im->gdes[i].format, "%s") != NULL) {
1617 auto_scale(im, &printval, &si_symb, &magfact);
1620 if (im->gdes[i].gf == GF_PRINT) {
1621 rrd_infoval_t prline;
1623 if (im->gdes[i].strftm) {
1624 prline.u_str = (char*)malloc((FMT_LEG_LEN + 2) * sizeof(char));
1625 if (im->gdes[vidx].vf.never == 1) {
1626 time_clean(prline.u_str, im->gdes[i].format);
1628 strftime(prline.u_str,
1629 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1631 } else if (bad_format(im->gdes[i].format)) {
1633 ("bad format for PRINT in '%s'", im->gdes[i].format);
1637 sprintf_alloc(im->gdes[i].format, printval, si_symb);
1641 ("print[%ld]", prline_cnt++), RD_I_STR, prline);
1646 if (im->gdes[i].strftm) {
1647 if (im->gdes[vidx].vf.never == 1) {
1648 time_clean(im->gdes[i].legend, im->gdes[i].format);
1650 strftime(im->gdes[i].legend,
1651 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1654 if (bad_format(im->gdes[i].format)) {
1656 ("bad format for GPRINT in '%s'",
1657 im->gdes[i].format);
1660 #ifdef HAVE_SNPRINTF
1661 snprintf(im->gdes[i].legend,
1663 im->gdes[i].format, printval, si_symb);
1665 sprintf(im->gdes[i].legend,
1666 im->gdes[i].format, printval, si_symb);
1679 if (isnan(im->gdes[i].yrule)) { /* we must set this here or the legend printer can not decide to print the legend */
1680 im->gdes[i].yrule = im->gdes[vidx].vf.val;
1685 if (im->gdes[i].xrule == 0) { /* again ... the legend printer needs it */
1686 im->gdes[i].xrule = im->gdes[vidx].vf.when;
1695 #ifdef WITH_PIECHART
1703 ("STACK should already be turned into LINE or AREA here");
1708 return graphelement;
1713 /* place legends with color spots */
1719 int interleg = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1720 int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1721 int fill = 0, fill_last;
1722 double legendwidth; // = im->ximg - 2 * border;
1724 double leg_x = border;
1725 int leg_y = 0; //im->yimg;
1726 int leg_y_prev = 0; // im->yimg;
1729 int i, ii, mark = 0;
1730 char default_txtalign = TXA_JUSTIFIED; /*default line orientation */
1733 char saved_legend[FMT_LEG_LEN + 5];
1739 legendwidth = im->legendwidth - 2 * border;
1743 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
1744 if ((legspace = (int*)malloc(im->gdes_c * sizeof(int))) == NULL) {
1745 rrd_set_error("malloc for legspace");
1749 for (i = 0; i < im->gdes_c; i++) {
1750 char prt_fctn; /*special printfunctions */
1752 strcpy(saved_legend, im->gdes[i].legend);
1756 /* hide legends for rules which are not displayed */
1757 if (im->gdes[i].gf == GF_TEXTALIGN) {
1758 default_txtalign = im->gdes[i].txtalign;
1761 if (!(im->extra_flags & FORCE_RULES_LEGEND)) {
1762 if (im->gdes[i].gf == GF_HRULE
1763 && (im->gdes[i].yrule <
1764 im->minval || im->gdes[i].yrule > im->maxval))
1765 im->gdes[i].legend[0] = '\0';
1766 if (im->gdes[i].gf == GF_VRULE
1767 && (im->gdes[i].xrule <
1768 im->start || im->gdes[i].xrule > im->end))
1769 im->gdes[i].legend[0] = '\0';
1772 /* turn \\t into tab */
1773 while ((tab = strstr(im->gdes[i].legend, "\\t"))) {
1774 memmove(tab, tab + 1, strlen(tab));
1778 leg_cc = strlen(im->gdes[i].legend);
1779 /* is there a controle code at the end of the legend string ? */
1780 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc - 2] == '\\') {
1781 prt_fctn = im->gdes[i].legend[leg_cc - 1];
1783 im->gdes[i].legend[leg_cc] = '\0';
1787 /* only valid control codes */
1788 if (prt_fctn != 'l' && prt_fctn != 'n' && /* a synonym for l */
1793 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
1796 ("Unknown control code at the end of '%s\\%c'",
1797 im->gdes[i].legend, prt_fctn);
1801 if (prt_fctn == 'n') {
1805 /* remove exess space from the end of the legend for \g */
1806 while (prt_fctn == 'g' &&
1807 leg_cc > 0 && im->gdes[i].legend[leg_cc - 1] == ' ') {
1809 im->gdes[i].legend[leg_cc] = '\0';
1814 /* no interleg space if string ends in \g */
1815 legspace[i] = (prt_fctn == 'g' ? 0 : interleg);
1817 fill += legspace[i];
1820 gfx_get_text_width(im,
1826 im->tabwidth, im->gdes[i].legend);
1831 /* who said there was a special tag ... ? */
1832 if (prt_fctn == 'g') {
1836 if (prt_fctn == '\0') {
1837 if(calc_width && (fill > legendwidth)){
1840 if (i == im->gdes_c - 1 || fill > legendwidth) {
1841 /* just one legend item is left right or center */
1842 switch (default_txtalign) {
1857 /* is it time to place the legends ? */
1858 if (fill > legendwidth) {
1866 if (leg_c == 1 && prt_fctn == 'j') {
1871 if (prt_fctn != '\0') {
1873 if (leg_c >= 2 && prt_fctn == 'j') {
1874 glue = (double)(legendwidth - fill) / (double)(leg_c - 1);
1878 if (prt_fctn == 'c')
1879 leg_x = border + (double)(legendwidth - fill) / 2.0;
1880 if (prt_fctn == 'r')
1881 leg_x = legendwidth - fill + border;
1882 for (ii = mark; ii <= i; ii++) {
1883 if (im->gdes[ii].legend[0] == '\0')
1884 continue; /* skip empty legends */
1885 im->gdes[ii].leg_x = leg_x;
1886 im->gdes[ii].leg_y = leg_y + border;
1888 (double)gfx_get_text_width(im, leg_x,
1893 im->tabwidth, im->gdes[ii].legend)
1894 +(double)legspace[ii]
1898 if (leg_x > border || prt_fctn == 's')
1899 leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1900 if (prt_fctn == 's')
1901 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
1902 if (prt_fctn == 'u')
1903 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size *1.8;
1905 if(calc_width && (fill > legendwidth)){
1914 strcpy(im->gdes[i].legend, saved_legend);
1919 im->legendwidth = legendwidth + 2 * border;
1922 im->legendheight = leg_y + border * 0.6;
1929 /* create a grid on the graph. it determines what to do
1930 from the values of xsize, start and end */
1932 /* the xaxis labels are determined from the number of seconds per pixel
1933 in the requested graph */
1935 int calc_horizontal_grid(
1943 int decimals, fractionals;
1945 im->ygrid_scale.labfact = 2;
1946 range = im->maxval - im->minval;
1947 scaledrange = range / im->magfact;
1948 /* does the scale of this graph make it impossible to put lines
1949 on it? If so, give up. */
1950 if (isnan(scaledrange)) {
1954 /* find grid spaceing */
1956 if (isnan(im->ygridstep)) {
1957 if (im->extra_flags & ALTYGRID) {
1958 /* find the value with max number of digits. Get number of digits */
1961 (max(fabs(im->maxval), fabs(im->minval)) *
1962 im->viewfactor / im->magfact));
1963 if (decimals <= 0) /* everything is small. make place for zero */
1965 im->ygrid_scale.gridstep =
1967 floor(log10(range * im->viewfactor / im->magfact))) /
1968 im->viewfactor * im->magfact;
1969 if (im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1970 im->ygrid_scale.gridstep = 0.1;
1971 /* should have at least 5 lines but no more then 15 */
1972 if (range / im->ygrid_scale.gridstep < 5
1973 && im->ygrid_scale.gridstep >= 30)
1974 im->ygrid_scale.gridstep /= 10;
1975 if (range / im->ygrid_scale.gridstep > 15)
1976 im->ygrid_scale.gridstep *= 10;
1977 if (range / im->ygrid_scale.gridstep > 5) {
1978 im->ygrid_scale.labfact = 1;
1979 if (range / im->ygrid_scale.gridstep > 8
1980 || im->ygrid_scale.gridstep <
1981 1.8 * im->text_prop[TEXT_PROP_AXIS].size)
1982 im->ygrid_scale.labfact = 2;
1984 im->ygrid_scale.gridstep /= 5;
1985 im->ygrid_scale.labfact = 5;
1989 (im->ygrid_scale.gridstep *
1990 (double) im->ygrid_scale.labfact * im->viewfactor /
1992 if (fractionals < 0) { /* small amplitude. */
1993 int len = decimals - fractionals + 1;
1995 if (im->unitslength < len + 2)
1996 im->unitslength = len + 2;
1997 sprintf(im->ygrid_scale.labfmt,
1999 -fractionals, (im->symbol != ' ' ? " %c" : ""));
2001 int len = decimals + 1;
2003 if (im->unitslength < len + 2)
2004 im->unitslength = len + 2;
2005 sprintf(im->ygrid_scale.labfmt,
2006 "%%%d.0f%s", len, (im->symbol != ' ' ? " %c" : ""));
2008 } else { /* classic rrd grid */
2009 for (i = 0; ylab[i].grid > 0; i++) {
2010 pixel = im->ysize / (scaledrange / ylab[i].grid);
2016 for (i = 0; i < 4; i++) {
2017 if (pixel * ylab[gridind].lfac[i] >=
2018 1.8 * im->text_prop[TEXT_PROP_AXIS].size) {
2019 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
2024 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
2027 im->ygrid_scale.gridstep = im->ygridstep;
2028 im->ygrid_scale.labfact = im->ylabfact;
2033 int draw_horizontal_grid(
2039 char graph_label[100];
2041 double X0 = im->xorigin;
2042 double X1 = im->xorigin + im->xsize;
2043 int sgrid = (int) (im->minval / im->ygrid_scale.gridstep - 1);
2044 int egrid = (int) (im->maxval / im->ygrid_scale.gridstep + 1);
2046 double second_axis_magfact = 0;
2047 char *second_axis_symb = "";
2050 im->ygrid_scale.gridstep /
2051 (double) im->magfact * (double) im->viewfactor;
2052 MaxY = scaledstep * (double) egrid;
2053 for (i = sgrid; i <= egrid; i++) {
2055 im->ygrid_scale.gridstep * i);
2057 im->ygrid_scale.gridstep * (i + 1));
2059 if (floor(Y0 + 0.5) >=
2060 im->yorigin - im->ysize && floor(Y0 + 0.5) <= im->yorigin) {
2061 /* Make sure at least 2 grid labels are shown, even if it doesn't agree
2062 with the chosen settings. Add a label if required by settings, or if
2063 there is only one label so far and the next grid line is out of bounds. */
2064 if (i % im->ygrid_scale.labfact == 0
2066 && (YN < im->yorigin - im->ysize || YN > im->yorigin))) {
2067 if (im->symbol == ' ') {
2068 if (im->extra_flags & ALTYGRID) {
2069 sprintf(graph_label,
2070 im->ygrid_scale.labfmt,
2071 scaledstep * (double) i);
2074 sprintf(graph_label, "%4.1f",
2075 scaledstep * (double) i);
2077 sprintf(graph_label, "%4.0f",
2078 scaledstep * (double) i);
2082 char sisym = (i == 0 ? ' ' : im->symbol);
2084 if (im->extra_flags & ALTYGRID) {
2085 sprintf(graph_label,
2086 im->ygrid_scale.labfmt,
2087 scaledstep * (double) i, sisym);
2090 sprintf(graph_label, "%4.1f %c",
2091 scaledstep * (double) i, sisym);
2093 sprintf(graph_label, "%4.0f %c",
2094 scaledstep * (double) i, sisym);
2099 if (im->second_axis_scale != 0){
2100 char graph_label_right[100];
2101 double sval = im->ygrid_scale.gridstep*(double)i*im->second_axis_scale+im->second_axis_shift;
2102 if (im->second_axis_format[0] == '\0'){
2103 if (!second_axis_magfact){
2104 double dummy = im->ygrid_scale.gridstep*(double)(sgrid+egrid)/2.0*im->second_axis_scale+im->second_axis_shift;
2105 auto_scale(im,&dummy,&second_axis_symb,&second_axis_magfact);
2107 sval /= second_axis_magfact;
2110 sprintf(graph_label_right,"%5.1f %s",sval,second_axis_symb);
2112 sprintf(graph_label_right,"%5.0f %s",sval,second_axis_symb);
2116 sprintf(graph_label_right,im->second_axis_format,sval);
2120 im->graph_col[GRC_FONT],
2121 im->text_prop[TEXT_PROP_AXIS].font_desc,
2122 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2123 graph_label_right );
2129 text_prop[TEXT_PROP_AXIS].
2131 im->graph_col[GRC_FONT],
2133 text_prop[TEXT_PROP_AXIS].
2136 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2137 gfx_line(im, X0 - 2, Y0, X0, Y0,
2138 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2139 gfx_line(im, X1, Y0, X1 + 2, Y0,
2140 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2141 gfx_dashed_line(im, X0 - 2, Y0,
2147 im->grid_dash_on, im->grid_dash_off);
2148 } else if (!(im->extra_flags & NOMINOR)) {
2151 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2152 gfx_line(im, X1, Y0, X1 + 2, Y0,
2153 GRIDWIDTH, im->graph_col[GRC_GRID]);
2154 gfx_dashed_line(im, X0 - 1, Y0,
2158 graph_col[GRC_GRID],
2159 im->grid_dash_on, im->grid_dash_off);
2166 /* this is frexp for base 10 */
2177 iexp = floor(log((double)fabs(x)) / log((double)10));
2178 mnt = x / pow(10.0, iexp);
2181 mnt = x / pow(10.0, iexp);
2188 /* logaritmic horizontal grid */
2189 int horizontal_log_grid(
2193 double yloglab[][10] = {
2195 1.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0,
2197 1.0, 5.0, 10., 0.0, 0.0, 0.0, 0.0,
2199 1.0, 2.0, 5.0, 7.0, 10., 0.0, 0.0,
2216 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* last line */
2218 int i, j, val_exp, min_exp;
2219 double nex; /* number of decades in data */
2220 double logscale; /* scale in logarithmic space */
2221 int exfrac = 1; /* decade spacing */
2222 int mid = -1; /* row in yloglab for major grid */
2223 double mspac; /* smallest major grid spacing (pixels) */
2224 int flab; /* first value in yloglab to use */
2225 double value, tmp, pre_value;
2227 char graph_label[100];
2229 nex = log10(im->maxval / im->minval);
2230 logscale = im->ysize / nex;
2231 /* major spacing for data with high dynamic range */
2232 while (logscale * exfrac < 3 * im->text_prop[TEXT_PROP_LEGEND].size) {
2239 /* major spacing for less dynamic data */
2241 /* search best row in yloglab */
2243 for (i = 0; yloglab[mid][i + 1] < 10.0; i++);
2244 mspac = logscale * log10(10.0 / yloglab[mid][i]);
2247 2 * im->text_prop[TEXT_PROP_LEGEND].size && yloglab[mid][0] > 0);
2250 /* find first value in yloglab */
2252 yloglab[mid][flab] < 10
2253 && frexp10(im->minval, &tmp) > yloglab[mid][flab]; flab++);
2254 if (yloglab[mid][flab] == 10.0) {
2259 if (val_exp % exfrac)
2260 val_exp += abs(-val_exp % exfrac);
2262 X1 = im->xorigin + im->xsize;
2267 value = yloglab[mid][flab] * pow(10.0, val_exp);
2268 if (AlmostEqual2sComplement(value, pre_value, 4))
2269 break; /* it seems we are not converging */
2271 Y0 = ytr(im, value);
2272 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2274 /* major grid line */
2276 X0 - 2, Y0, X0, Y0, MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2277 gfx_line(im, X1, Y0, X1 + 2, Y0,
2278 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2279 gfx_dashed_line(im, X0 - 2, Y0,
2284 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2286 if (im->extra_flags & FORCE_UNITS_SI) {
2291 scale = floor(val_exp / 3.0);
2293 pvalue = pow(10.0, val_exp % 3);
2295 pvalue = pow(10.0, ((val_exp + 1) % 3) + 2);
2296 pvalue *= yloglab[mid][flab];
2297 if (((scale + si_symbcenter) < (int) sizeof(si_symbol))
2298 && ((scale + si_symbcenter) >= 0))
2299 symbol = si_symbol[scale + si_symbcenter];
2302 sprintf(graph_label, "%3.0f %c", pvalue, symbol);
2304 sprintf(graph_label, "%3.0e", value);
2306 if (im->second_axis_scale != 0){
2307 char graph_label_right[100];
2308 double sval = value*im->second_axis_scale+im->second_axis_shift;
2309 if (im->second_axis_format[0] == '\0'){
2310 if (im->extra_flags & FORCE_UNITS_SI) {
2313 auto_scale(im,&sval,&symb,&mfac);
2314 sprintf(graph_label_right,"%4.0f %s", sval,symb);
2317 sprintf(graph_label_right,"%3.0e", sval);
2321 sprintf(graph_label_right,im->second_axis_format,sval,"");
2326 im->graph_col[GRC_FONT],
2327 im->text_prop[TEXT_PROP_AXIS].font_desc,
2328 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2329 graph_label_right );
2335 text_prop[TEXT_PROP_AXIS].
2337 im->graph_col[GRC_FONT],
2339 text_prop[TEXT_PROP_AXIS].
2342 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2344 if (mid < 4 && exfrac == 1) {
2345 /* find first and last minor line behind current major line
2346 * i is the first line and j tha last */
2348 min_exp = val_exp - 1;
2349 for (i = 1; yloglab[mid][i] < 10.0; i++);
2350 i = yloglab[mid][i - 1] + 1;
2354 i = yloglab[mid][flab - 1] + 1;
2355 j = yloglab[mid][flab];
2358 /* draw minor lines below current major line */
2359 for (; i < j; i++) {
2361 value = i * pow(10.0, min_exp);
2362 if (value < im->minval)
2364 Y0 = ytr(im, value);
2365 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2370 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2371 gfx_line(im, X1, Y0, X1 + 2, Y0,
2372 GRIDWIDTH, im->graph_col[GRC_GRID]);
2373 gfx_dashed_line(im, X0 - 1, Y0,
2377 graph_col[GRC_GRID],
2378 im->grid_dash_on, im->grid_dash_off);
2380 } else if (exfrac > 1) {
2381 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2382 value = pow(10.0, i);
2383 if (value < im->minval)
2385 Y0 = ytr(im, value);
2386 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2391 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2392 gfx_line(im, X1, Y0, X1 + 2, Y0,
2393 GRIDWIDTH, im->graph_col[GRC_GRID]);
2394 gfx_dashed_line(im, X0 - 1, Y0,
2398 graph_col[GRC_GRID],
2399 im->grid_dash_on, im->grid_dash_off);
2404 if (yloglab[mid][++flab] == 10.0) {
2410 /* draw minor lines after highest major line */
2411 if (mid < 4 && exfrac == 1) {
2412 /* find first and last minor line below current major line
2413 * i is the first line and j tha last */
2415 min_exp = val_exp - 1;
2416 for (i = 1; yloglab[mid][i] < 10.0; i++);
2417 i = yloglab[mid][i - 1] + 1;
2421 i = yloglab[mid][flab - 1] + 1;
2422 j = yloglab[mid][flab];
2425 /* draw minor lines below current major line */
2426 for (; i < j; i++) {
2428 value = i * pow(10.0, min_exp);
2429 if (value < im->minval)
2431 Y0 = ytr(im, value);
2432 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2436 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2437 gfx_line(im, X1, Y0, X1 + 2, Y0,
2438 GRIDWIDTH, im->graph_col[GRC_GRID]);
2439 gfx_dashed_line(im, X0 - 1, Y0,
2443 graph_col[GRC_GRID],
2444 im->grid_dash_on, im->grid_dash_off);
2447 /* fancy minor gridlines */
2448 else if (exfrac > 1) {
2449 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2450 value = pow(10.0, i);
2451 if (value < im->minval)
2453 Y0 = ytr(im, value);
2454 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2458 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2459 gfx_line(im, X1, Y0, X1 + 2, Y0,
2460 GRIDWIDTH, im->graph_col[GRC_GRID]);
2461 gfx_dashed_line(im, X0 - 1, Y0,
2465 graph_col[GRC_GRID],
2466 im->grid_dash_on, im->grid_dash_off);
2477 int xlab_sel; /* which sort of label and grid ? */
2478 time_t ti, tilab, timajor;
2480 char graph_label[100];
2481 double X0, Y0, Y1; /* points for filled graph and more */
2484 /* the type of time grid is determined by finding
2485 the number of seconds per pixel in the graph */
2486 if (im->xlab_user.minsec == -1) {
2487 factor = (im->end - im->start) / im->xsize;
2489 while (xlab[xlab_sel + 1].minsec !=
2490 -1 && xlab[xlab_sel + 1].minsec <= factor) {
2492 } /* pick the last one */
2493 while (xlab[xlab_sel - 1].minsec ==
2494 xlab[xlab_sel].minsec
2495 && xlab[xlab_sel].length > (im->end - im->start)) {
2497 } /* go back to the smallest size */
2498 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
2499 im->xlab_user.gridst = xlab[xlab_sel].gridst;
2500 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
2501 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
2502 im->xlab_user.labtm = xlab[xlab_sel].labtm;
2503 im->xlab_user.labst = xlab[xlab_sel].labst;
2504 im->xlab_user.precis = xlab[xlab_sel].precis;
2505 im->xlab_user.stst = xlab[xlab_sel].stst;
2508 /* y coords are the same for every line ... */
2510 Y1 = im->yorigin - im->ysize;
2511 /* paint the minor grid */
2512 if (!(im->extra_flags & NOMINOR)) {
2513 for (ti = find_first_time(im->start,
2521 find_first_time(im->start,
2526 ti < im->end && ti != -1;
2528 find_next_time(ti, im->xlab_user.gridtm, im->xlab_user.gridst)
2530 /* are we inside the graph ? */
2531 if (ti < im->start || ti > im->end)
2533 while (timajor < ti && timajor != -1) {
2534 timajor = find_next_time(timajor,
2537 mgridtm, im->xlab_user.mgridst);
2539 if (timajor == -1) break; /* fail in case of problems with time increments */
2541 continue; /* skip as falls on major grid line */
2543 gfx_line(im, X0, Y1 - 2, X0, Y1,
2544 GRIDWIDTH, im->graph_col[GRC_GRID]);
2545 gfx_line(im, X0, Y0, X0, Y0 + 2,
2546 GRIDWIDTH, im->graph_col[GRC_GRID]);
2547 gfx_dashed_line(im, X0, Y0 + 1, X0,
2550 graph_col[GRC_GRID],
2551 im->grid_dash_on, im->grid_dash_off);
2555 /* paint the major grid */
2556 for (ti = find_first_time(im->start,
2563 ti < im->end && ti != -1;
2564 ti = find_next_time(ti, im->xlab_user.mgridtm, im->xlab_user.mgridst)
2566 /* are we inside the graph ? */
2567 if (ti < im->start || ti > im->end)
2570 gfx_line(im, X0, Y1 - 2, X0, Y1,
2571 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2572 gfx_line(im, X0, Y0, X0, Y0 + 3,
2573 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2574 gfx_dashed_line(im, X0, Y0 + 3, X0,
2578 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2580 /* paint the labels below the graph */
2582 find_first_time(im->start -
2591 im->xlab_user.precis / 2) && ti != -1;
2592 ti = find_next_time(ti, im->xlab_user.labtm, im->xlab_user.labst)
2594 tilab = ti + im->xlab_user.precis / 2; /* correct time for the label */
2595 /* are we inside the graph ? */
2596 if (tilab < im->start || tilab > im->end)
2599 localtime_r(&tilab, &tm);
2600 strftime(graph_label, 99, im->xlab_user.stst, &tm);
2602 # error "your libc has no strftime I guess we'll abort the exercise here."
2607 im->graph_col[GRC_FONT],
2609 text_prop[TEXT_PROP_AXIS].
2612 GFX_H_CENTER, GFX_V_TOP, graph_label);
2621 /* draw x and y axis */
2622 /* gfx_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
2623 im->xorigin+im->xsize,im->yorigin-im->ysize,
2624 GRIDWIDTH, im->graph_col[GRC_AXIS]);
2626 gfx_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
2627 im->xorigin+im->xsize,im->yorigin-im->ysize,
2628 GRIDWIDTH, im->graph_col[GRC_AXIS]); */
2630 gfx_line(im, im->xorigin - 4,
2632 im->xorigin + im->xsize +
2633 4, im->yorigin, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2634 gfx_line(im, im->xorigin,
2637 im->yorigin - im->ysize -
2638 4, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2639 /* arrow for X and Y axis direction */
2640 gfx_new_area(im, im->xorigin + im->xsize + 2, im->yorigin - 3, im->xorigin + im->xsize + 2, im->yorigin + 3, im->xorigin + im->xsize + 7, im->yorigin, /* horyzontal */
2641 im->graph_col[GRC_ARROW]);
2643 gfx_new_area(im, im->xorigin - 3, im->yorigin - im->ysize - 2, im->xorigin + 3, im->yorigin - im->ysize - 2, im->xorigin, im->yorigin - im->ysize - 7, /* vertical */
2644 im->graph_col[GRC_ARROW]);
2646 if (im->second_axis_scale != 0){
2647 gfx_line ( im, im->xorigin+im->xsize,im->yorigin+4,
2648 im->xorigin+im->xsize,im->yorigin-im->ysize-4,
2649 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2651 im->xorigin+im->xsize-2, im->yorigin-im->ysize-2,
2652 im->xorigin+im->xsize+3, im->yorigin-im->ysize-2,
2653 im->xorigin+im->xsize, im->yorigin-im->ysize-7, /* LINEOFFSET */
2654 im->graph_col[GRC_ARROW]);
2665 double X0, Y0; /* points for filled graph and more */
2666 struct gfx_color_t water_color;
2668 if (im->draw_3d_border > 0) {
2669 /* draw 3d border */
2670 i = im->draw_3d_border;
2671 gfx_new_area(im, 0, im->yimg,
2672 i, im->yimg - i, i, i, im->graph_col[GRC_SHADEA]);
2673 gfx_add_point(im, im->ximg - i, i);
2674 gfx_add_point(im, im->ximg, 0);
2675 gfx_add_point(im, 0, 0);
2677 gfx_new_area(im, i, im->yimg - i,
2679 im->yimg - i, im->ximg - i, i, im->graph_col[GRC_SHADEB]);
2680 gfx_add_point(im, im->ximg, 0);
2681 gfx_add_point(im, im->ximg, im->yimg);
2682 gfx_add_point(im, 0, im->yimg);
2685 if (im->draw_x_grid == 1)
2687 if (im->draw_y_grid == 1) {
2688 if (im->logarithmic) {
2689 res = horizontal_log_grid(im);
2691 res = draw_horizontal_grid(im);
2694 /* dont draw horizontal grid if there is no min and max val */
2696 char *nodata = "No Data found";
2698 gfx_text(im, im->ximg / 2,
2701 im->graph_col[GRC_FONT],
2703 text_prop[TEXT_PROP_AXIS].
2706 GFX_H_CENTER, GFX_V_CENTER, nodata);
2710 /* yaxis unit description */
2711 if (im->ylegend[0] != '\0'){
2713 im->xOriginLegendY+10,
2715 im->graph_col[GRC_FONT],
2717 text_prop[TEXT_PROP_UNIT].
2720 RRDGRAPH_YLEGEND_ANGLE, GFX_H_CENTER, GFX_V_CENTER, im->ylegend);
2723 if (im->second_axis_legend[0] != '\0'){
2725 im->xOriginLegendY2+10,
2726 im->yOriginLegendY2,
2727 im->graph_col[GRC_FONT],
2728 im->text_prop[TEXT_PROP_UNIT].font_desc,
2730 RRDGRAPH_YLEGEND_ANGLE,
2731 GFX_H_CENTER, GFX_V_CENTER,
2732 im->second_axis_legend);
2737 im->xOriginTitle, im->yOriginTitle+6,
2738 im->graph_col[GRC_FONT],
2740 text_prop[TEXT_PROP_TITLE].
2742 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP, im->title);
2743 /* rrdtool 'logo' */
2744 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
2745 water_color = im->graph_col[GRC_FONT];
2746 water_color.alpha = 0.3;
2747 double xpos = im->legendposition == EAST ? im->xOriginLegendY : im->ximg - 4;
2748 gfx_text(im, xpos, 5,
2751 text_prop[TEXT_PROP_WATERMARK].
2752 font_desc, im->tabwidth,
2753 -90, GFX_H_LEFT, GFX_V_TOP, "RRDTOOL / TOBI OETIKER");
2755 /* graph watermark */
2756 if (im->watermark[0] != '\0') {
2757 water_color = im->graph_col[GRC_FONT];
2758 water_color.alpha = 0.3;
2760 im->ximg / 2, im->yimg - 6,
2763 text_prop[TEXT_PROP_WATERMARK].
2764 font_desc, im->tabwidth, 0,
2765 GFX_H_CENTER, GFX_V_BOTTOM, im->watermark);
2769 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
2770 for (i = 0; i < im->gdes_c; i++) {
2771 if (im->gdes[i].legend[0] == '\0')
2773 /* im->gdes[i].leg_y is the bottom of the legend */
2774 X0 = im->xOriginLegend + im->gdes[i].leg_x;
2775 Y0 = im->legenddirection == TOP_DOWN ? im->yOriginLegend + im->gdes[i].leg_y : im->yOriginLegend + im->legendheight - im->gdes[i].leg_y;
2776 gfx_text(im, X0, Y0,
2777 im->graph_col[GRC_FONT],
2780 [TEXT_PROP_LEGEND].font_desc,
2782 GFX_H_LEFT, GFX_V_BOTTOM, im->gdes[i].legend);
2783 /* The legend for GRAPH items starts with "M " to have
2784 enough space for the box */
2785 if (im->gdes[i].gf != GF_PRINT &&
2786 im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT) {
2790 boxH = gfx_get_text_width(im, 0,
2795 im->tabwidth, "o") * 1.2;
2797 /* shift the box up a bit */
2800 if (im->dynamic_labels && im->gdes[i].gf == GF_HRULE) { /* [-] */
2802 cairo_new_path(im->cr);
2803 cairo_set_line_width(im->cr, 1.0);
2806 X0 + boxH, Y0 - boxV / 2,
2807 1.0, im->gdes[i].col);
2809 } else if (im->dynamic_labels && im->gdes[i].gf == GF_VRULE) { /* [|] */
2811 cairo_new_path(im->cr);
2812 cairo_set_line_width(im->cr, 1.0);
2815 X0 + boxH / 2, Y0 - boxV,
2816 1.0, im->gdes[i].col);
2818 } else if (im->dynamic_labels && im->gdes[i].gf == GF_LINE) { /* [/] */
2820 cairo_new_path(im->cr);
2821 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
2824 X0 + boxH, Y0 - boxV,
2825 im->gdes[i].linewidth, im->gdes[i].col);
2828 /* make sure transparent colors show up the same way as in the graph */
2831 X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
2832 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2834 gfx_new_area(im, X0, Y0 - boxV, X0,
2835 Y0, X0 + boxH, Y0, im->gdes[i].col);
2836 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2839 cairo_new_path(im->cr);
2840 cairo_set_line_width(im->cr, 1.0);
2843 gfx_line_fit(im, &X0, &Y0);
2844 gfx_line_fit(im, &X1, &Y1);
2845 cairo_move_to(im->cr, X0, Y0);
2846 cairo_line_to(im->cr, X1, Y0);
2847 cairo_line_to(im->cr, X1, Y1);
2848 cairo_line_to(im->cr, X0, Y1);
2849 cairo_close_path(im->cr);
2850 cairo_set_source_rgba(im->cr,
2851 im->graph_col[GRC_FRAME].red,
2852 im->graph_col[GRC_FRAME].green,
2853 im->graph_col[GRC_FRAME].blue,
2854 im->graph_col[GRC_FRAME].alpha);
2856 if (im->gdes[i].dash) {
2857 /* make box borders in legend dashed if the graph is dashed */
2861 cairo_set_dash(im->cr, dashes, 1, 0.0);
2863 cairo_stroke(im->cr);
2864 cairo_restore(im->cr);
2871 /*****************************************************
2872 * lazy check make sure we rely need to create this graph
2873 *****************************************************/
2880 struct stat imgstat;
2883 return 0; /* no lazy option */
2884 if (strlen(im->graphfile) == 0)
2885 return 0; /* inmemory option */
2886 if (stat(im->graphfile, &imgstat) != 0)
2887 return 0; /* can't stat */
2888 /* one pixel in the existing graph is more then what we would
2890 if (time(NULL) - imgstat.st_mtime > (im->end - im->start) / im->xsize)
2892 if ((fd = fopen(im->graphfile, "rb")) == NULL)
2893 return 0; /* the file does not exist */
2894 switch (im->imgformat) {
2896 size = PngSize(fd, &(im->ximg), &(im->yimg));
2906 int graph_size_location(
2911 /* The actual size of the image to draw is determined from
2912 ** several sources. The size given on the command line is
2913 ** the graph area but we need more as we have to draw labels
2914 ** and other things outside the graph area. If the option
2915 ** --full-size-mode is selected the size defines the total
2916 ** image size and the size available for the graph is
2920 /** +---+-----------------------------------+
2921 ** | y |...............graph title.........|
2922 ** | +---+-------------------------------+
2926 ** | s | x | main graph area |
2931 ** | l | b +-------------------------------+
2932 ** | e | l | x axis labels |
2933 ** +---+---+-------------------------------+
2934 ** |....................legends............|
2935 ** +---------------------------------------+
2937 ** +---------------------------------------+
2940 int Xvertical = 0, Xvertical2 = 0, Ytitle =
2941 0, Xylabel = 0, Xmain = 0, Ymain =
2942 0, Yxlabel = 0, Xspacing = 15, Yspacing = 15, Ywatermark = 4;
2944 // no legends and no the shall be plotted it's easy
2945 if (im->extra_flags & ONLY_GRAPH) {
2947 im->ximg = im->xsize;
2948 im->yimg = im->ysize;
2949 im->yorigin = im->ysize;
2955 if(im->watermark[0] != '\0') {
2956 Ywatermark = im->text_prop[TEXT_PROP_WATERMARK].size * 2;
2959 // calculate the width of the left vertical legend
2960 if (im->ylegend[0] != '\0') {
2961 Xvertical = im->text_prop[TEXT_PROP_UNIT].size * 2;
2964 // calculate the width of the right vertical legend
2965 if (im->second_axis_legend[0] != '\0') {
2966 Xvertical2 = im->text_prop[TEXT_PROP_UNIT].size * 2;
2969 Xvertical2 = Xspacing;
2972 if (im->title[0] != '\0') {
2973 /* The title is placed "inbetween" two text lines so it
2974 ** automatically has some vertical spacing. The horizontal
2975 ** spacing is added here, on each side.
2977 /* if necessary, reduce the font size of the title until it fits the image width */
2978 Ytitle = im->text_prop[TEXT_PROP_TITLE].size * 2.6 + 10;
2981 // we have no title; get a little clearing from the top
2986 if (im->draw_x_grid) {
2987 // calculate the height of the horizontal labelling
2988 Yxlabel = im->text_prop[TEXT_PROP_AXIS].size * 2.5;
2990 if (im->draw_y_grid || im->forceleftspace) {
2991 // calculate the width of the vertical labelling
2993 gfx_get_text_width(im, 0,
2994 im->text_prop[TEXT_PROP_AXIS].font_desc,
2995 im->tabwidth, "0") * im->unitslength;
2999 // add some space to the labelling
3000 Xylabel += Xspacing;
3002 /* If the legend is printed besides the graph the width has to be
3003 ** calculated first. Placing the legend north or south of the
3004 ** graph requires the width calculation first, so the legend is
3005 ** skipped for the moment.
3007 im->legendheight = 0;
3008 im->legendwidth = 0;
3009 if (!(im->extra_flags & NOLEGEND)) {
3010 if(im->legendposition == WEST || im->legendposition == EAST){
3011 if (leg_place(im, 1) == -1){
3017 if (im->extra_flags & FULL_SIZE_MODE) {
3019 /* The actual size of the image to draw has been determined by the user.
3020 ** The graph area is the space remaining after accounting for the legend,
3021 ** the watermark, the axis labels, and the title.
3023 im->ximg = im->xsize;
3024 im->yimg = im->ysize;
3028 /* Now calculate the total size. Insert some spacing where
3029 desired. im->xorigin and im->yorigin need to correspond
3030 with the lower left corner of the main graph area or, if
3031 this one is not set, the imaginary box surrounding the
3033 /* Initial size calculation for the main graph area */
3035 Xmain -= Xylabel;// + Xspacing;
3036 if((im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3037 Xmain -= im->legendwidth;// + Xspacing;
3039 if (im->second_axis_scale != 0){
3042 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3046 Xmain -= Xvertical + Xvertical2;
3048 /* limit the remaining space to 0 */
3054 /* Putting the legend north or south, the height can now be calculated */
3055 if (!(im->extra_flags & NOLEGEND)) {
3056 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3057 im->legendwidth = im->ximg;
3058 if (leg_place(im, 0) == -1){
3064 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3065 Ymain -= Yxlabel + im->legendheight;
3071 /* reserve space for the title *or* some padding above the graph */
3074 /* reserve space for padding below the graph */
3075 if (im->extra_flags & NOLEGEND) {
3076 Ymain -= 0.5*Yspacing;
3079 if (im->watermark[0] != '\0') {
3080 Ymain -= Ywatermark;
3082 /* limit the remaining height to 0 */
3087 } else { /* dimension options -width and -height refer to the dimensions of the main graph area */
3089 /* The actual size of the image to draw is determined from
3090 ** several sources. The size given on the command line is
3091 ** the graph area but we need more as we have to draw labels
3092 ** and other things outside the graph area.
3096 Xmain = im->xsize; // + Xspacing;
3100 im->ximg = Xmain + Xylabel;
3101 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3102 im->ximg += Xspacing;
3105 if( (im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3106 im->ximg += im->legendwidth;// + Xspacing;
3108 if (im->second_axis_scale != 0){
3109 im->ximg += Xylabel;
3112 im->ximg += Xvertical + Xvertical2;
3114 if (!(im->extra_flags & NOLEGEND)) {
3115 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3116 im->legendwidth = im->ximg;
3117 if (leg_place(im, 0) == -1){
3123 im->yimg = Ymain + Yxlabel;
3124 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3125 im->yimg += im->legendheight;
3128 /* reserve space for the title *or* some padding above the graph */
3132 im->yimg += 1.5 * Yspacing;
3134 /* reserve space for padding below the graph */
3135 if (im->extra_flags & NOLEGEND) {
3136 im->yimg += 0.5*Yspacing;
3139 if (im->watermark[0] != '\0') {
3140 im->yimg += Ywatermark;
3145 /* In case of putting the legend in west or east position the first
3146 ** legend calculation might lead to wrong positions if some items
3147 ** are not aligned on the left hand side (e.g. centered) as the
3148 ** legendwidth wight have been increased after the item was placed.
3149 ** In this case the positions have to be recalculated.
3151 if (!(im->extra_flags & NOLEGEND)) {
3152 if(im->legendposition == WEST || im->legendposition == EAST){
3153 if (leg_place(im, 0) == -1){
3159 /* After calculating all dimensions
3160 ** it is now possible to calculate
3163 switch(im->legendposition){
3165 im->xOriginTitle = (im->ximg / 2);
3166 im->yOriginTitle = 0;
3168 im->xOriginLegend = 0;
3169 im->yOriginLegend = Ytitle;
3171 im->xOriginLegendY = 0;
3172 im->yOriginLegendY = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3174 im->xorigin = Xvertical + Xylabel;
3175 im->yorigin = Ytitle + im->legendheight + Ymain;
3177 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3178 if (im->second_axis_scale != 0){
3179 im->xOriginLegendY2 += Xylabel;
3181 im->yOriginLegendY2 = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3186 im->xOriginTitle = im->legendwidth + im->xsize / 2;
3187 im->yOriginTitle = 0;
3189 im->xOriginLegend = 0;
3190 im->yOriginLegend = Ytitle;
3192 im->xOriginLegendY = im->legendwidth;
3193 im->yOriginLegendY = Ytitle + (Ymain / 2);
3195 im->xorigin = im->legendwidth + Xvertical + Xylabel;
3196 im->yorigin = Ytitle + Ymain;
3198 im->xOriginLegendY2 = im->legendwidth + Xvertical + Xylabel + Xmain;
3199 if (im->second_axis_scale != 0){
3200 im->xOriginLegendY2 += Xylabel;
3202 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3207 im->xOriginTitle = im->ximg / 2;
3208 im->yOriginTitle = 0;
3210 im->xOriginLegend = 0;
3211 im->yOriginLegend = Ytitle + Ymain + Yxlabel;
3213 im->xOriginLegendY = 0;
3214 im->yOriginLegendY = Ytitle + (Ymain / 2);
3216 im->xorigin = Xvertical + Xylabel;
3217 im->yorigin = Ytitle + Ymain;
3219 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3220 if (im->second_axis_scale != 0){
3221 im->xOriginLegendY2 += Xylabel;
3223 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3228 im->xOriginTitle = im->xsize / 2;
3229 im->yOriginTitle = 0;
3231 im->xOriginLegend = Xvertical + Xylabel + Xmain + Xvertical2;
3232 if (im->second_axis_scale != 0){
3233 im->xOriginLegend += Xylabel;
3235 im->yOriginLegend = Ytitle;
3237 im->xOriginLegendY = 0;
3238 im->yOriginLegendY = Ytitle + (Ymain / 2);
3240 im->xorigin = Xvertical + Xylabel;
3241 im->yorigin = Ytitle + Ymain;
3243 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3244 if (im->second_axis_scale != 0){
3245 im->xOriginLegendY2 += Xylabel;
3247 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3249 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3250 im->xOriginTitle += Xspacing;
3251 im->xOriginLegend += Xspacing;
3252 im->xOriginLegendY += Xspacing;
3253 im->xorigin += Xspacing;
3254 im->xOriginLegendY2 += Xspacing;
3264 static cairo_status_t cairo_output(
3268 unsigned int length)
3270 image_desc_t *im = (image_desc_t*)closure;
3272 im->rendered_image =
3273 (unsigned char*)realloc(im->rendered_image, im->rendered_image_size + length);
3274 if (im->rendered_image == NULL)
3275 return CAIRO_STATUS_WRITE_ERROR;
3276 memcpy(im->rendered_image + im->rendered_image_size, data, length);
3277 im->rendered_image_size += length;
3278 return CAIRO_STATUS_SUCCESS;
3281 /* draw that picture thing ... */
3286 int lazy = lazy_check(im);
3287 double areazero = 0.0;
3288 graph_desc_t *lastgdes = NULL;
3291 // PangoFontMap *font_map = pango_cairo_font_map_get_default();
3293 /* pull the data from the rrd files ... */
3294 if (data_fetch(im) == -1)
3296 /* evaluate VDEF and CDEF operations ... */
3297 if (data_calc(im) == -1)
3299 /* calculate and PRINT and GPRINT definitions. We have to do it at
3300 * this point because it will affect the length of the legends
3301 * if there are no graph elements (i==0) we stop here ...
3302 * if we are lazy, try to quit ...
3308 /* if we want and can be lazy ... quit now */
3312 /**************************************************************
3313 *** Calculating sizes and locations became a bit confusing ***
3314 *** so I moved this into a separate function. ***
3315 **************************************************************/
3316 if (graph_size_location(im, i) == -1)
3319 info.u_cnt = im->xorigin;
3320 grinfo_push(im, sprintf_alloc("graph_left"), RD_I_CNT, info);
3321 info.u_cnt = im->yorigin - im->ysize;
3322 grinfo_push(im, sprintf_alloc("graph_top"), RD_I_CNT, info);
3323 info.u_cnt = im->xsize;
3324 grinfo_push(im, sprintf_alloc("graph_width"), RD_I_CNT, info);
3325 info.u_cnt = im->ysize;
3326 grinfo_push(im, sprintf_alloc("graph_height"), RD_I_CNT, info);
3327 info.u_cnt = im->ximg;
3328 grinfo_push(im, sprintf_alloc("image_width"), RD_I_CNT, info);
3329 info.u_cnt = im->yimg;
3330 grinfo_push(im, sprintf_alloc("image_height"), RD_I_CNT, info);
3331 info.u_cnt = im->start;
3332 grinfo_push(im, sprintf_alloc("graph_start"), RD_I_CNT, info);
3333 info.u_cnt = im->end;
3334 grinfo_push(im, sprintf_alloc("graph_end"), RD_I_CNT, info);
3336 /* if we want and can be lazy ... quit now */
3340 /* get actual drawing data and find min and max values */
3341 if (data_proc(im) == -1)
3343 if (!im->logarithmic) {
3347 /* identify si magnitude Kilo, Mega Giga ? */
3348 if (!im->rigid && !im->logarithmic)
3349 expand_range(im); /* make sure the upper and lower limit are
3352 info.u_val = im->minval;
3353 grinfo_push(im, sprintf_alloc("value_min"), RD_I_VAL, info);
3354 info.u_val = im->maxval;
3355 grinfo_push(im, sprintf_alloc("value_max"), RD_I_VAL, info);
3358 if (!calc_horizontal_grid(im))
3363 apply_gridfit(im); */
3364 /* the actual graph is created by going through the individual
3365 graph elements and then drawing them */
3366 cairo_surface_destroy(im->surface);
3367 switch (im->imgformat) {
3370 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
3371 im->ximg * im->zoom,
3372 im->yimg * im->zoom);
3376 im->surface = strlen(im->graphfile)
3377 ? cairo_pdf_surface_create(im->graphfile, im->ximg * im->zoom,
3378 im->yimg * im->zoom)
3379 : cairo_pdf_surface_create_for_stream
3380 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3384 im->surface = strlen(im->graphfile)
3386 cairo_ps_surface_create(im->graphfile, im->ximg * im->zoom,
3387 im->yimg * im->zoom)
3388 : cairo_ps_surface_create_for_stream
3389 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3393 im->surface = strlen(im->graphfile)
3395 cairo_svg_surface_create(im->
3397 im->ximg * im->zoom, im->yimg * im->zoom)
3398 : cairo_svg_surface_create_for_stream
3399 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3400 cairo_svg_surface_restrict_to_version
3401 (im->surface, CAIRO_SVG_VERSION_1_1);
3404 cairo_destroy(im->cr);
3405 im->cr = cairo_create(im->surface);
3406 cairo_set_antialias(im->cr, im->graph_antialias);
3407 cairo_scale(im->cr, im->zoom, im->zoom);
3408 // pango_cairo_font_map_set_resolution(PANGO_CAIRO_FONT_MAP(font_map), 100);
3409 gfx_new_area(im, 0, 0, 0, im->yimg,
3410 im->ximg, im->yimg, im->graph_col[GRC_BACK]);
3411 gfx_add_point(im, im->ximg, 0);
3413 gfx_new_area(im, im->xorigin,
3416 im->xsize, im->yorigin,
3419 im->yorigin - im->ysize, im->graph_col[GRC_CANVAS]);
3420 gfx_add_point(im, im->xorigin, im->yorigin - im->ysize);
3422 cairo_rectangle(im->cr, im->xorigin, im->yorigin - im->ysize - 1.0,
3423 im->xsize, im->ysize + 2.0);
3425 if (im->minval > 0.0)
3426 areazero = im->minval;
3427 if (im->maxval < 0.0)
3428 areazero = im->maxval;
3429 for (i = 0; i < im->gdes_c; i++) {
3430 switch (im->gdes[i].gf) {
3444 for (ii = 0; ii < im->xsize; ii++) {
3445 if (!isnan(im->gdes[i].p_data[ii])
3446 && im->gdes[i].p_data[ii] != 0.0) {
3447 if (im->gdes[i].yrule > 0) {
3454 im->ysize, 1.0, im->gdes[i].col);
3455 } else if (im->gdes[i].yrule < 0) {
3458 im->yorigin - im->ysize - 1.0,
3460 im->yorigin - im->ysize -
3463 im->ysize, 1.0, im->gdes[i].col);
3471 rrd_value_t diffval = im->maxval - im->minval;
3472 rrd_value_t maxlimit = im->maxval + 9 * diffval;
3473 rrd_value_t minlimit = im->minval - 9 * diffval;
3474 for (ii = 0; ii < im->xsize; ii++) {
3475 /* fix data points at oo and -oo */
3476 if (isinf(im->gdes[i].p_data[ii])) {
3477 if (im->gdes[i].p_data[ii] > 0) {
3478 im->gdes[i].p_data[ii] = im->maxval;
3480 im->gdes[i].p_data[ii] = im->minval;
3483 /* some versions of cairo go unstable when trying
3484 to draw way out of the canvas ... lets not even try */
3485 if (im->gdes[i].p_data[ii] > maxlimit) {
3486 im->gdes[i].p_data[ii] = maxlimit;
3488 if (im->gdes[i].p_data[ii] < minlimit) {
3489 im->gdes[i].p_data[ii] = minlimit;
3493 /* *******************************************************
3498 -------|--t-1--t--------------------------------
3500 if we know the value at time t was a then
3501 we draw a square from t-1 to t with the value a.
3503 ********************************************************* */
3504 if (im->gdes[i].col.alpha != 0.0) {
3505 /* GF_LINE and friend */
3506 if (im->gdes[i].gf == GF_LINE) {
3507 double last_y = 0.0;
3511 cairo_new_path(im->cr);
3512 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
3513 if (im->gdes[i].dash) {
3514 cairo_set_dash(im->cr,
3515 im->gdes[i].p_dashes,
3516 im->gdes[i].ndash, im->gdes[i].offset);
3519 for (ii = 1; ii < im->xsize; ii++) {
3520 if (isnan(im->gdes[i].p_data[ii])
3521 || (im->slopemode == 1
3522 && isnan(im->gdes[i].p_data[ii - 1]))) {
3527 last_y = ytr(im, im->gdes[i].p_data[ii]);
3528 if (im->slopemode == 0) {
3529 double x = ii - 1 + im->xorigin;
3532 gfx_line_fit(im, &x, &y);
3533 cairo_move_to(im->cr, x, y);
3534 x = ii + im->xorigin;
3536 gfx_line_fit(im, &x, &y);
3537 cairo_line_to(im->cr, x, y);
3539 double x = ii - 1 + im->xorigin;
3541 ytr(im, im->gdes[i].p_data[ii - 1]);
3542 gfx_line_fit(im, &x, &y);
3543 cairo_move_to(im->cr, x, y);
3544 x = ii + im->xorigin;
3546 gfx_line_fit(im, &x, &y);
3547 cairo_line_to(im->cr, x, y);
3551 double x1 = ii + im->xorigin;
3552 double y1 = ytr(im, im->gdes[i].p_data[ii]);
3554 if (im->slopemode == 0
3555 && !AlmostEqual2sComplement(y1, last_y, 4)) {
3556 double x = ii - 1 + im->xorigin;
3559 gfx_line_fit(im, &x, &y);
3560 cairo_line_to(im->cr, x, y);
3563 gfx_line_fit(im, &x1, &y1);
3564 cairo_line_to(im->cr, x1, y1);
3567 cairo_set_source_rgba(im->cr,
3573 col.blue, im->gdes[i].col.alpha);
3574 cairo_set_line_cap(im->cr, CAIRO_LINE_CAP_ROUND);
3575 cairo_set_line_join(im->cr, CAIRO_LINE_JOIN_ROUND);
3576 cairo_stroke(im->cr);
3577 cairo_restore(im->cr);
3583 (double *) malloc(sizeof(double) * im->xsize * 2);
3585 (double *) malloc(sizeof(double) * im->xsize * 2);
3587 (double *) malloc(sizeof(double) * im->xsize * 2);
3589 (double *) malloc(sizeof(double) * im->xsize * 2);
3592 for (ii = 0; ii <= im->xsize; ii++) {
3595 if (idxI > 0 && (drawem != 0 || ii == im->xsize)) {
3601 AlmostEqual2sComplement(foreY
3605 AlmostEqual2sComplement(foreY
3611 if (im->gdes[i].gf != GF_GRAD) {
3616 foreY[cntI], im->gdes[i].col);
3618 lastx = foreX[cntI];
3619 lasty = foreY[cntI];
3621 while (cntI < idxI) {
3626 AlmostEqual2sComplement(foreY
3630 AlmostEqual2sComplement(foreY
3637 if (im->gdes[i].gf != GF_GRAD) {
3638 gfx_add_point(im, foreX[cntI], foreY[cntI]);
3640 gfx_add_rect_fadey(im,
3642 foreX[cntI], foreY[cntI], lasty,
3645 im->gdes[i].gradheight
3647 lastx = foreX[cntI];
3648 lasty = foreY[cntI];
3651 if (im->gdes[i].gf != GF_GRAD) {
3652 gfx_add_point(im, backX[idxI], backY[idxI]);
3654 gfx_add_rect_fadey(im,
3656 backX[idxI], backY[idxI], lasty,
3659 im->gdes[i].gradheight);
3660 lastx = backX[idxI];
3661 lasty = backY[idxI];
3668 AlmostEqual2sComplement(backY
3672 AlmostEqual2sComplement(backY
3679 if (im->gdes[i].gf != GF_GRAD) {
3680 gfx_add_point(im, backX[idxI], backY[idxI]);
3682 gfx_add_rect_fadey(im,
3684 backX[idxI], backY[idxI], lasty,
3687 im->gdes[i].gradheight);
3688 lastx = backX[idxI];
3689 lasty = backY[idxI];
3694 if (im->gdes[i].gf != GF_GRAD)
3701 if (ii == im->xsize)
3703 if (im->slopemode == 0 && ii == 0) {
3706 if (isnan(im->gdes[i].p_data[ii])) {
3710 ytop = ytr(im, im->gdes[i].p_data[ii]);
3711 if (lastgdes && im->gdes[i].stack) {
3712 ybase = ytr(im, lastgdes->p_data[ii]);
3714 ybase = ytr(im, areazero);
3716 if (ybase == ytop) {
3722 double extra = ytop;
3727 if (im->slopemode == 0) {
3728 backY[++idxI] = ybase - 0.2;
3729 backX[idxI] = ii + im->xorigin - 1;
3730 foreY[idxI] = ytop + 0.2;
3731 foreX[idxI] = ii + im->xorigin - 1;
3733 backY[++idxI] = ybase - 0.2;
3734 backX[idxI] = ii + im->xorigin;
3735 foreY[idxI] = ytop + 0.2;
3736 foreX[idxI] = ii + im->xorigin;
3738 /* close up any remaining area */
3743 } /* else GF_LINE */
3745 /* if color != 0x0 */
3746 /* make sure we do not run into trouble when stacking on NaN */
3747 for (ii = 0; ii < im->xsize; ii++) {
3748 if (isnan(im->gdes[i].p_data[ii])) {
3749 if (lastgdes && (im->gdes[i].stack)) {
3750 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
3752 im->gdes[i].p_data[ii] = areazero;
3756 lastgdes = &(im->gdes[i]);
3758 } /* GF_AREA, GF_LINE, GF_GRAD */
3761 ("STACK should already be turned into LINE or AREA here");
3766 cairo_reset_clip(im->cr);
3768 /* grid_paint also does the text */
3769 if (!(im->extra_flags & ONLY_GRAPH))
3771 if (!(im->extra_flags & ONLY_GRAPH))
3773 /* the RULES are the last thing to paint ... */
3774 for (i = 0; i < im->gdes_c; i++) {
3776 switch (im->gdes[i].gf) {
3778 if (im->gdes[i].yrule >= im->minval
3779 && im->gdes[i].yrule <= im->maxval) {
3781 if (im->gdes[i].dash) {
3782 cairo_set_dash(im->cr,
3783 im->gdes[i].p_dashes,
3784 im->gdes[i].ndash, im->gdes[i].offset);
3786 gfx_line(im, im->xorigin,
3787 ytr(im, im->gdes[i].yrule),
3788 im->xorigin + im->xsize,
3789 ytr(im, im->gdes[i].yrule), 1.0, im->gdes[i].col);
3790 cairo_stroke(im->cr);
3791 cairo_restore(im->cr);
3795 if (im->gdes[i].xrule >= im->start
3796 && im->gdes[i].xrule <= im->end) {
3798 if (im->gdes[i].dash) {
3799 cairo_set_dash(im->cr,
3800 im->gdes[i].p_dashes,
3801 im->gdes[i].ndash, im->gdes[i].offset);
3804 xtr(im, im->gdes[i].xrule),
3805 im->yorigin, xtr(im,
3809 im->yorigin - im->ysize, 1.0, im->gdes[i].col);
3810 cairo_stroke(im->cr);
3811 cairo_restore(im->cr);
3820 switch (im->imgformat) {
3823 cairo_status_t status;
3825 status = strlen(im->graphfile) ?
3826 cairo_surface_write_to_png(im->surface, im->graphfile)
3827 : cairo_surface_write_to_png_stream(im->surface, &cairo_output,
3830 if (status != CAIRO_STATUS_SUCCESS) {
3831 rrd_set_error("Could not save png to '%s'", im->graphfile);
3837 if (strlen(im->graphfile)) {
3838 cairo_show_page(im->cr);
3840 cairo_surface_finish(im->surface);
3849 /*****************************************************
3851 *****************************************************/
3858 if ((im->gdes = (graph_desc_t *)
3859 rrd_realloc(im->gdes, (im->gdes_c)
3860 * sizeof(graph_desc_t))) == NULL) {
3861 rrd_set_error("realloc graph_descs");
3866 im->gdes[im->gdes_c - 1].step = im->step;
3867 im->gdes[im->gdes_c - 1].step_orig = im->step;
3868 im->gdes[im->gdes_c - 1].stack = 0;
3869 im->gdes[im->gdes_c - 1].linewidth = 0;
3870 im->gdes[im->gdes_c - 1].debug = 0;
3871 im->gdes[im->gdes_c - 1].start = im->start;
3872 im->gdes[im->gdes_c - 1].start_orig = im->start;
3873 im->gdes[im->gdes_c - 1].end = im->end;
3874 im->gdes[im->gdes_c - 1].end_orig = im->end;
3875 im->gdes[im->gdes_c - 1].vname[0] = '\0';
3876 im->gdes[im->gdes_c - 1].data = NULL;
3877 im->gdes[im->gdes_c - 1].ds_namv = NULL;
3878 im->gdes[im->gdes_c - 1].data_first = 0;
3879 im->gdes[im->gdes_c - 1].p_data = NULL;
3880 im->gdes[im->gdes_c - 1].rpnp = NULL;
3881 im->gdes[im->gdes_c - 1].p_dashes = NULL;
3882 im->gdes[im->gdes_c - 1].shift = 0.0;
3883 im->gdes[im->gdes_c - 1].dash = 0;
3884 im->gdes[im->gdes_c - 1].ndash = 0;
3885 im->gdes[im->gdes_c - 1].offset = 0;
3886 im->gdes[im->gdes_c - 1].col.red = 0.0;
3887 im->gdes[im->gdes_c - 1].col.green = 0.0;
3888 im->gdes[im->gdes_c - 1].col.blue = 0.0;
3889 im->gdes[im->gdes_c - 1].col.alpha = 0.0;
3890 im->gdes[im->gdes_c - 1].col2.red = 0.0;
3891 im->gdes[im->gdes_c - 1].col2.green = 0.0;
3892 im->gdes[im->gdes_c - 1].col2.blue = 0.0;
3893 im->gdes[im->gdes_c - 1].col2.alpha = 0.0;
3894 im->gdes[im->gdes_c - 1].gradheight = 50.0;
3895 im->gdes[im->gdes_c - 1].legend[0] = '\0';
3896 im->gdes[im->gdes_c - 1].format[0] = '\0';
3897 im->gdes[im->gdes_c - 1].strftm = 0;
3898 im->gdes[im->gdes_c - 1].rrd[0] = '\0';
3899 im->gdes[im->gdes_c - 1].ds = -1;
3900 im->gdes[im->gdes_c - 1].cf_reduce = CF_AVERAGE;
3901 im->gdes[im->gdes_c - 1].cf = CF_AVERAGE;
3902 im->gdes[im->gdes_c - 1].yrule = DNAN;
3903 im->gdes[im->gdes_c - 1].xrule = 0;
3904 im->gdes[im->gdes_c - 1].daemon[0] = 0;
3908 /* copies input untill the first unescaped colon is found
3909 or until input ends. backslashes have to be escaped as well */
3911 const char *const input,
3917 for (inp = 0; inp < len && input[inp] != ':' && input[inp] != '\0'; inp++) {
3918 if (input[inp] == '\\'
3919 && input[inp + 1] != '\0'
3920 && (input[inp + 1] == '\\' || input[inp + 1] == ':')) {
3921 output[outp++] = input[++inp];
3923 output[outp++] = input[inp];
3926 output[outp] = '\0';
3930 /* Now just a wrapper around rrd_graph_v */
3942 rrd_info_t *grinfo = NULL;
3945 grinfo = rrd_graph_v(argc, argv);
3951 if (strcmp(walker->key, "image_info") == 0) {
3954 (char**)rrd_realloc((*prdata),
3955 (prlines + 1) * sizeof(char *))) == NULL) {
3956 rrd_set_error("realloc prdata");
3959 /* imginfo goes to position 0 in the prdata array */
3960 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
3961 + 2) * sizeof(char));
3962 strcpy((*prdata)[prlines - 1], walker->value.u_str);
3963 (*prdata)[prlines] = NULL;
3965 /* skip anything else */
3966 walker = walker->next;
3974 if (strcmp(walker->key, "image_width") == 0) {
3975 *xsize = walker->value.u_cnt;
3976 } else if (strcmp(walker->key, "image_height") == 0) {
3977 *ysize = walker->value.u_cnt;
3978 } else if (strcmp(walker->key, "value_min") == 0) {
3979 *ymin = walker->value.u_val;
3980 } else if (strcmp(walker->key, "value_max") == 0) {
3981 *ymax = walker->value.u_val;
3982 } else if (strncmp(walker->key, "print", 5) == 0) { /* keys are prdate[0..] */
3985 (char**)rrd_realloc((*prdata),
3986 (prlines + 1) * sizeof(char *))) == NULL) {
3987 rrd_set_error("realloc prdata");
3990 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
3991 + 2) * sizeof(char));
3992 (*prdata)[prlines] = NULL;
3993 strcpy((*prdata)[prlines - 1], walker->value.u_str);
3994 } else if (strcmp(walker->key, "image") == 0) {
3995 if ( fwrite(walker->value.u_blo.ptr, walker->value.u_blo.size, 1,
3996 (stream ? stream : stdout)) == 0 && ferror(stream ? stream : stdout)){
3997 rrd_set_error("writing image");
4001 /* skip anything else */
4002 walker = walker->next;
4004 rrd_info_free(grinfo);
4009 /* Some surgery done on this function, it became ridiculously big.
4011 ** - initializing now in rrd_graph_init()
4012 ** - options parsing now in rrd_graph_options()
4013 ** - script parsing now in rrd_graph_script()
4015 rrd_info_t *rrd_graph_v(
4022 rrd_graph_init(&im);
4023 /* a dummy surface so that we can measure text sizes for placements */
4024 old_locale = setlocale(LC_NUMERIC, NULL);
4025 setlocale(LC_NUMERIC, "C");
4026 rrd_graph_options(argc, argv, &im);
4027 if (rrd_test_error()) {
4028 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4029 rrd_info_free(im.grinfo);
4034 if (optind >= argc) {
4035 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4036 rrd_info_free(im.grinfo);
4038 rrd_set_error("missing filename");
4042 if (strlen(argv[optind]) >= MAXPATH) {
4043 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4044 rrd_set_error("filename (including path) too long");
4045 rrd_info_free(im.grinfo);
4050 strncpy(im.graphfile, argv[optind], MAXPATH - 1);
4051 im.graphfile[MAXPATH - 1] = '\0';
4053 if (strcmp(im.graphfile, "-") == 0) {
4054 im.graphfile[0] = '\0';
4057 rrd_graph_script(argc, argv, &im, 1);
4058 setlocale(LC_NUMERIC, old_locale); /* reenable locale for rendering the graph */
4060 if (rrd_test_error()) {
4061 rrd_info_free(im.grinfo);
4066 /* Everything is now read and the actual work can start */
4068 if (graph_paint(&im) == -1) {
4069 rrd_info_free(im.grinfo);
4075 /* The image is generated and needs to be output.
4076 ** Also, if needed, print a line with information about the image.
4084 path = strdup(im.graphfile);
4085 filename = basename(path);
4087 sprintf_alloc(im.imginfo,
4090 im.ximg), (long) (im.zoom * im.yimg));
4091 grinfo_push(&im, sprintf_alloc("image_info"), RD_I_STR, info);
4095 if (im.rendered_image) {
4098 img.u_blo.size = im.rendered_image_size;
4099 img.u_blo.ptr = im.rendered_image;
4100 grinfo_push(&im, sprintf_alloc("image"), RD_I_BLO, img);
4109 image_desc_t *im,int prop,char *font, double size ){
4111 strncpy(im->text_prop[prop].font, font, sizeof(text_prop[prop].font) - 1);
4112 im->text_prop[prop].font[sizeof(text_prop[prop].font) - 1] = '\0';
4113 /* if we already got one, drop it first */
4114 pango_font_description_free(im->text_prop[prop].font_desc);
4115 im->text_prop[prop].font_desc = pango_font_description_from_string( font );
4118 im->text_prop[prop].size = size;
4120 if (im->text_prop[prop].font_desc && im->text_prop[prop].size ){
4121 pango_font_description_set_size(im->text_prop[prop].font_desc, im->text_prop[prop].size * PANGO_SCALE);
4125 void rrd_graph_init(
4130 char *deffont = getenv("RRD_DEFAULT_FONT");
4131 static PangoFontMap *fontmap = NULL;
4132 PangoContext *context;
4139 im->daemon_addr = NULL;
4140 im->draw_x_grid = 1;
4141 im->draw_y_grid = 1;
4142 im->draw_3d_border = 2;
4143 im->dynamic_labels = 0;
4144 im->extra_flags = 0;
4145 im->font_options = cairo_font_options_create();
4146 im->forceleftspace = 0;
4149 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4150 im->grid_dash_off = 1;
4151 im->grid_dash_on = 1;
4153 im->grinfo = (rrd_info_t *) NULL;
4154 im->grinfo_current = (rrd_info_t *) NULL;
4155 im->imgformat = IF_PNG;
4158 im->legenddirection = TOP_DOWN;
4159 im->legendheight = 0;
4160 im->legendposition = SOUTH;
4161 im->legendwidth = 0;
4162 im->logarithmic = 0;
4169 im->rendered_image_size = 0;
4170 im->rendered_image = NULL;
4174 im->tabwidth = 40.0;
4175 im->title[0] = '\0';
4176 im->unitsexponent = 9999;
4177 im->unitslength = 6;
4178 im->viewfactor = 1.0;
4179 im->watermark[0] = '\0';
4180 im->with_markup = 0;
4182 im->xlab_user.minsec = -1;
4184 im->xOriginLegend = 0;
4185 im->xOriginLegendY = 0;
4186 im->xOriginLegendY2 = 0;
4187 im->xOriginTitle = 0;
4189 im->ygridstep = DNAN;
4191 im->ylegend[0] = '\0';
4192 im->second_axis_scale = 0; /* 0 disables it */
4193 im->second_axis_shift = 0; /* no shift by default */
4194 im->second_axis_legend[0] = '\0';
4195 im->second_axis_format[0] = '\0';
4197 im->yOriginLegend = 0;
4198 im->yOriginLegendY = 0;
4199 im->yOriginLegendY2 = 0;
4200 im->yOriginTitle = 0;
4204 im->surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 10, 10);
4205 im->cr = cairo_create(im->surface);
4207 for (i = 0; i < DIM(text_prop); i++) {
4208 im->text_prop[i].size = -1;
4209 im->text_prop[i].font_desc = NULL;
4210 rrd_set_font_desc(im,i, deffont ? deffont : text_prop[i].font,text_prop[i].size);
4213 if (fontmap == NULL){
4214 fontmap = pango_cairo_font_map_get_default();
4217 context = pango_cairo_font_map_create_context((PangoCairoFontMap*)fontmap);
4219 pango_cairo_context_set_resolution(context, 100);
4221 pango_cairo_update_context(im->cr,context);
4223 im->layout = pango_layout_new(context);
4224 g_object_unref (context);
4226 // im->layout = pango_cairo_create_layout(im->cr);
4229 cairo_font_options_set_hint_style
4230 (im->font_options, CAIRO_HINT_STYLE_FULL);
4231 cairo_font_options_set_hint_metrics
4232 (im->font_options, CAIRO_HINT_METRICS_ON);
4233 cairo_font_options_set_antialias(im->font_options, CAIRO_ANTIALIAS_GRAY);
4237 for (i = 0; i < DIM(graph_col); i++)
4238 im->graph_col[i] = graph_col[i];
4244 void rrd_graph_options(
4251 char *parsetime_error = NULL;
4252 char scan_gtm[12], scan_mtm[12], scan_ltm[12], col_nam[12];
4253 time_t start_tmp = 0, end_tmp = 0;
4255 rrd_time_value_t start_tv, end_tv;
4256 long unsigned int color;
4258 /* defines for long options without a short equivalent. should be bytes,
4259 and may not collide with (the ASCII value of) short options */
4260 #define LONGOPT_UNITS_SI 255
4263 struct option long_options[] = {
4264 { "alt-autoscale", no_argument, 0, 'A'},
4265 { "imgformat", required_argument, 0, 'a'},
4266 { "font-smoothing-threshold", required_argument, 0, 'B'},
4267 { "base", required_argument, 0, 'b'},
4268 { "color", required_argument, 0, 'c'},
4269 { "full-size-mode", no_argument, 0, 'D'},
4270 { "daemon", required_argument, 0, 'd'},
4271 { "slope-mode", no_argument, 0, 'E'},
4272 { "end", required_argument, 0, 'e'},
4273 { "force-rules-legend", no_argument, 0, 'F'},
4274 { "imginfo", required_argument, 0, 'f'},
4275 { "graph-render-mode", required_argument, 0, 'G'},
4276 { "no-legend", no_argument, 0, 'g'},
4277 { "height", required_argument, 0, 'h'},
4278 { "no-minor", no_argument, 0, 'I'},
4279 { "interlaced", no_argument, 0, 'i'},
4280 { "alt-autoscale-min", no_argument, 0, 'J'},
4281 { "only-graph", no_argument, 0, 'j'},
4282 { "units-length", required_argument, 0, 'L'},
4283 { "lower-limit", required_argument, 0, 'l'},
4284 { "alt-autoscale-max", no_argument, 0, 'M'},
4285 { "zoom", required_argument, 0, 'm'},
4286 { "no-gridfit", no_argument, 0, 'N'},
4287 { "font", required_argument, 0, 'n'},
4288 { "logarithmic", no_argument, 0, 'o'},
4289 { "pango-markup", no_argument, 0, 'P'},
4290 { "font-render-mode", required_argument, 0, 'R'},
4291 { "rigid", no_argument, 0, 'r'},
4292 { "step", required_argument, 0, 'S'},
4293 { "start", required_argument, 0, 's'},
4294 { "tabwidth", required_argument, 0, 'T'},
4295 { "title", required_argument, 0, 't'},
4296 { "upper-limit", required_argument, 0, 'u'},
4297 { "vertical-label", required_argument, 0, 'v'},
4298 { "watermark", required_argument, 0, 'W'},
4299 { "width", required_argument, 0, 'w'},
4300 { "units-exponent", required_argument, 0, 'X'},
4301 { "x-grid", required_argument, 0, 'x'},
4302 { "alt-y-grid", no_argument, 0, 'Y'},
4303 { "y-grid", required_argument, 0, 'y'},
4304 { "lazy", no_argument, 0, 'z'},
4305 { "units", required_argument, 0, LONGOPT_UNITS_SI},
4306 { "alt-y-mrtg", no_argument, 0, 1000}, /* this has no effect it is just here to save old apps from crashing when they use it */
4307 { "disable-rrdtool-tag",no_argument, 0, 1001},
4308 { "right-axis", required_argument, 0, 1002},
4309 { "right-axis-label", required_argument, 0, 1003},
4310 { "right-axis-format", required_argument, 0, 1004},
4311 { "legend-position", required_argument, 0, 1005},
4312 { "legend-direction", required_argument, 0, 1006},
4313 { "border", required_argument, 0, 1007},
4314 { "grid-dash", required_argument, 0, 1008},
4315 { "dynamic-labels", no_argument, 0, 1009},
4316 { "week-fmt", required_argument, 0, 1010},
4322 opterr = 0; /* initialize getopt */
4323 rrd_parsetime("end-24h", &start_tv);
4324 rrd_parsetime("now", &end_tv);
4326 int option_index = 0;
4328 int col_start, col_end;
4330 opt = getopt_long(argc, argv,
4331 "Aa:B:b:c:Dd:Ee:Ff:G:gh:IiJjL:l:Mm:Nn:oPR:rS:s:T:t:u:v:W:w:X:x:Yy:z",
4332 long_options, &option_index);
4337 im->extra_flags |= NOMINOR;
4340 im->extra_flags |= ALTYGRID;
4343 im->extra_flags |= ALTAUTOSCALE;
4346 im->extra_flags |= ALTAUTOSCALE_MIN;
4349 im->extra_flags |= ALTAUTOSCALE_MAX;
4352 im->extra_flags |= ONLY_GRAPH;
4355 im->extra_flags |= NOLEGEND;
4358 if (strcmp(optarg, "north") == 0) {
4359 im->legendposition = NORTH;
4360 } else if (strcmp(optarg, "west") == 0) {
4361 im->legendposition = WEST;
4362 } else if (strcmp(optarg, "south") == 0) {
4363 im->legendposition = SOUTH;
4364 } else if (strcmp(optarg, "east") == 0) {
4365 im->legendposition = EAST;
4367 rrd_set_error("unknown legend-position '%s'", optarg);
4372 if (strcmp(optarg, "topdown") == 0) {
4373 im->legenddirection = TOP_DOWN;
4374 } else if (strcmp(optarg, "bottomup") == 0) {
4375 im->legenddirection = BOTTOM_UP;
4377 rrd_set_error("unknown legend-position '%s'", optarg);
4382 im->extra_flags |= FORCE_RULES_LEGEND;
4385 im->extra_flags |= NO_RRDTOOL_TAG;
4387 case LONGOPT_UNITS_SI:
4388 if (im->extra_flags & FORCE_UNITS) {
4389 rrd_set_error("--units can only be used once!");
4392 if (strcmp(optarg, "si") == 0)
4393 im->extra_flags |= FORCE_UNITS_SI;
4395 rrd_set_error("invalid argument for --units: %s", optarg);
4400 im->unitsexponent = atoi(optarg);
4403 im->unitslength = atoi(optarg);
4404 im->forceleftspace = 1;
4407 im->tabwidth = atof(optarg);
4410 im->step = atoi(optarg);
4416 im->with_markup = 1;
4419 if ((parsetime_error = rrd_parsetime(optarg, &start_tv))) {
4420 rrd_set_error("start time: %s", parsetime_error);
4425 if ((parsetime_error = rrd_parsetime(optarg, &end_tv))) {
4426 rrd_set_error("end time: %s", parsetime_error);
4431 if (strcmp(optarg, "none") == 0) {
4432 im->draw_x_grid = 0;
4436 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
4438 &im->xlab_user.gridst,
4440 &im->xlab_user.mgridst,
4442 &im->xlab_user.labst,
4443 &im->xlab_user.precis, &stroff) == 7 && stroff != 0) {
4444 strncpy(im->xlab_form, optarg + stroff,
4445 sizeof(im->xlab_form) - 1);
4446 im->xlab_form[sizeof(im->xlab_form) - 1] = '\0';
4448 (im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1) {
4449 rrd_set_error("unknown keyword %s", scan_gtm);
4452 (im->xlab_user.mgridtm = tmt_conv(scan_mtm))
4454 rrd_set_error("unknown keyword %s", scan_mtm);
4457 (im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1) {
4458 rrd_set_error("unknown keyword %s", scan_ltm);
4461 im->xlab_user.minsec = 1;
4462 im->xlab_user.stst = im->xlab_form;
4464 rrd_set_error("invalid x-grid format");
4470 if (strcmp(optarg, "none") == 0) {
4471 im->draw_y_grid = 0;
4474 if (sscanf(optarg, "%lf:%d", &im->ygridstep, &im->ylabfact) == 2) {
4475 if (im->ygridstep <= 0) {
4476 rrd_set_error("grid step must be > 0");
4478 } else if (im->ylabfact < 1) {
4479 rrd_set_error("label factor must be > 0");
4483 rrd_set_error("invalid y-grid format");
4488 im->draw_3d_border = atoi(optarg);
4490 case 1008: /* grid-dash */
4494 &im->grid_dash_off) != 2) {
4495 rrd_set_error("expected grid-dash format float:float");
4499 case 1009: /* enable dynamic labels */
4500 im->dynamic_labels = 1;
4503 strncpy(week_fmt,optarg,sizeof week_fmt);
4504 week_fmt[(sizeof week_fmt)-1]='\0';
4506 case 1002: /* right y axis */
4510 &im->second_axis_scale,
4511 &im->second_axis_shift) == 2) {
4512 if(im->second_axis_scale==0){
4513 rrd_set_error("the second_axis_scale must not be 0");
4517 rrd_set_error("invalid right-axis format expected scale:shift");
4522 strncpy(im->second_axis_legend,optarg,150);
4523 im->second_axis_legend[150]='\0';
4526 if (bad_format(optarg)){
4527 rrd_set_error("use either %le or %lf formats");
4530 strncpy(im->second_axis_format,optarg,150);
4531 im->second_axis_format[150]='\0';
4534 strncpy(im->ylegend, optarg, 150);
4535 im->ylegend[150] = '\0';
4538 im->maxval = atof(optarg);
4541 im->minval = atof(optarg);
4544 im->base = atol(optarg);
4545 if (im->base != 1024 && im->base != 1000) {
4547 ("the only sensible value for base apart from 1000 is 1024");
4552 long_tmp = atol(optarg);
4553 if (long_tmp < 10) {
4554 rrd_set_error("width below 10 pixels");
4557 im->xsize = long_tmp;
4560 long_tmp = atol(optarg);
4561 if (long_tmp < 10) {
4562 rrd_set_error("height below 10 pixels");
4565 im->ysize = long_tmp;
4568 im->extra_flags |= FULL_SIZE_MODE;
4571 /* interlaced png not supported at the moment */
4577 im->imginfo = optarg;
4581 (im->imgformat = if_conv(optarg)) == -1) {
4582 rrd_set_error("unsupported graphics format '%s'", optarg);
4593 im->logarithmic = 1;
4597 "%10[A-Z]#%n%8lx%n",
4598 col_nam, &col_start, &color, &col_end) == 2) {
4600 int col_len = col_end - col_start;
4605 (((color & 0xF00) * 0x110000) | ((color & 0x0F0) *
4613 (((color & 0xF000) *
4614 0x11000) | ((color & 0x0F00) *
4615 0x01100) | ((color &
4618 ((color & 0x000F) * 0x00011)
4622 color = (color << 8) + 0xff /* shift left by 8 */ ;
4627 rrd_set_error("the color format is #RRGGBB[AA]");
4630 if ((ci = grc_conv(col_nam)) != -1) {
4631 im->graph_col[ci] = gfx_hex_to_col(color);
4633 rrd_set_error("invalid color name '%s'", col_nam);
4637 rrd_set_error("invalid color def format");
4646 if (sscanf(optarg, "%10[A-Z]:%lf%n", prop, &size, &end) >= 2) {
4647 int sindex, propidx;
4649 if ((sindex = text_prop_conv(prop)) != -1) {
4650 for (propidx = sindex;
4651 propidx < TEXT_PROP_LAST; propidx++) {
4653 rrd_set_font_desc(im,propidx,NULL,size);
4655 if ((int) strlen(optarg) > end+2) {
4656 if (optarg[end] == ':') {
4657 rrd_set_font_desc(im,propidx,optarg + end + 1,0);
4660 ("expected : after font size in '%s'",
4665 /* only run the for loop for DEFAULT (0) for
4666 all others, we break here. woodo programming */
4667 if (propidx == sindex && sindex != 0)
4671 rrd_set_error("invalid fonttag '%s'", prop);
4675 rrd_set_error("invalid text property format");
4681 im->zoom = atof(optarg);
4682 if (im->zoom <= 0.0) {
4683 rrd_set_error("zoom factor must be > 0");
4688 strncpy(im->title, optarg, 150);
4689 im->title[150] = '\0';
4692 if (strcmp(optarg, "normal") == 0) {
4693 cairo_font_options_set_antialias
4694 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4695 cairo_font_options_set_hint_style
4696 (im->font_options, CAIRO_HINT_STYLE_FULL);
4697 } else if (strcmp(optarg, "light") == 0) {
4698 cairo_font_options_set_antialias
4699 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4700 cairo_font_options_set_hint_style
4701 (im->font_options, CAIRO_HINT_STYLE_SLIGHT);
4702 } else if (strcmp(optarg, "mono") == 0) {
4703 cairo_font_options_set_antialias
4704 (im->font_options, CAIRO_ANTIALIAS_NONE);
4705 cairo_font_options_set_hint_style
4706 (im->font_options, CAIRO_HINT_STYLE_FULL);
4708 rrd_set_error("unknown font-render-mode '%s'", optarg);
4713 if (strcmp(optarg, "normal") == 0)
4714 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4715 else if (strcmp(optarg, "mono") == 0)
4716 im->graph_antialias = CAIRO_ANTIALIAS_NONE;
4718 rrd_set_error("unknown graph-render-mode '%s'", optarg);
4723 /* not supported curently */
4726 strncpy(im->watermark, optarg, 100);
4727 im->watermark[99] = '\0';
4731 if (im->daemon_addr != NULL)
4733 rrd_set_error ("You cannot specify --daemon "
4738 im->daemon_addr = strdup(optarg);
4739 if (im->daemon_addr == NULL)
4741 rrd_set_error("strdup failed");
4749 rrd_set_error("unknown option '%c'", optopt);
4751 rrd_set_error("unknown option '%s'", argv[optind - 1]);
4756 pango_cairo_context_set_font_options(pango_layout_get_context(im->layout), im->font_options);
4757 pango_layout_context_changed(im->layout);
4761 if (im->logarithmic && im->minval <= 0) {
4763 ("for a logarithmic yaxis you must specify a lower-limit > 0");
4767 if (rrd_proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
4768 /* error string is set in rrd_parsetime.c */
4772 if (start_tmp < 3600 * 24 * 365 * 10) {
4774 ("the first entry to fetch should be after 1980 (%ld)",
4779 if (end_tmp < start_tmp) {
4781 ("start (%ld) should be less than end (%ld)", start_tmp, end_tmp);
4785 im->start = start_tmp;
4787 im->step = max((long) im->step, (im->end - im->start) / im->xsize);
4790 int rrd_graph_color(
4798 graph_desc_t *gdp = &im->gdes[im->gdes_c - 1];
4800 color = strstr(var, "#");
4801 if (color == NULL) {
4802 if (optional == 0) {
4803 rrd_set_error("Found no color in %s", err);
4810 long unsigned int col;
4812 rest = strstr(color, ":");
4819 sscanf(color, "#%6lx%n", &col, &n);
4820 col = (col << 8) + 0xff /* shift left by 8 */ ;
4822 rrd_set_error("Color problem in %s", err);
4825 sscanf(color, "#%8lx%n", &col, &n);
4829 rrd_set_error("Color problem in %s", err);
4831 if (rrd_test_error())
4833 gdp->col = gfx_hex_to_col(col);
4846 while (*ptr != '\0')
4847 if (*ptr++ == '%') {
4849 /* line cannot end with percent char */
4852 /* '%s', '%S' and '%%' are allowed */
4853 if (*ptr == 's' || *ptr == 'S' || *ptr == '%')
4855 /* %c is allowed (but use only with vdef!) */
4856 else if (*ptr == 'c') {
4861 /* or else '% 6.2lf' and such are allowed */
4863 /* optional padding character */
4864 if (*ptr == ' ' || *ptr == '+' || *ptr == '-')
4866 /* This should take care of 'm.n' with all three optional */
4867 while (*ptr >= '0' && *ptr <= '9')
4871 while (*ptr >= '0' && *ptr <= '9')
4873 /* Either 'le', 'lf' or 'lg' must follow here */
4876 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g')
4891 const char *const str)
4893 /* A VDEF currently is either "func" or "param,func"
4894 * so the parsing is rather simple. Change if needed.
4901 sscanf(str, "%le,%29[A-Z]%n", ¶m, func, &n);
4902 if (n == (int) strlen(str)) { /* matched */
4906 sscanf(str, "%29[A-Z]%n", func, &n);
4907 if (n == (int) strlen(str)) { /* matched */
4911 ("Unknown function string '%s' in VDEF '%s'",
4916 if (!strcmp("PERCENT", func))
4917 gdes->vf.op = VDEF_PERCENT;
4918 else if (!strcmp("PERCENTNAN", func))
4919 gdes->vf.op = VDEF_PERCENTNAN;
4920 else if (!strcmp("MAXIMUM", func))
4921 gdes->vf.op = VDEF_MAXIMUM;
4922 else if (!strcmp("AVERAGE", func))
4923 gdes->vf.op = VDEF_AVERAGE;
4924 else if (!strcmp("STDEV", func))
4925 gdes->vf.op = VDEF_STDEV;
4926 else if (!strcmp("MINIMUM", func))
4927 gdes->vf.op = VDEF_MINIMUM;
4928 else if (!strcmp("TOTAL", func))
4929 gdes->vf.op = VDEF_TOTAL;
4930 else if (!strcmp("FIRST", func))
4931 gdes->vf.op = VDEF_FIRST;
4932 else if (!strcmp("LAST", func))
4933 gdes->vf.op = VDEF_LAST;
4934 else if (!strcmp("LSLSLOPE", func))
4935 gdes->vf.op = VDEF_LSLSLOPE;
4936 else if (!strcmp("LSLINT", func))
4937 gdes->vf.op = VDEF_LSLINT;
4938 else if (!strcmp("LSLCORREL", func))
4939 gdes->vf.op = VDEF_LSLCORREL;
4942 ("Unknown function '%s' in VDEF '%s'\n", func, gdes->vname);
4945 switch (gdes->vf.op) {
4947 case VDEF_PERCENTNAN:
4948 if (isnan(param)) { /* no parameter given */
4950 ("Function '%s' needs parameter in VDEF '%s'\n",
4954 if (param >= 0.0 && param <= 100.0) {
4955 gdes->vf.param = param;
4956 gdes->vf.val = DNAN; /* undefined */
4957 gdes->vf.when = 0; /* undefined */
4961 ("Parameter '%f' out of range in VDEF '%s'\n",
4962 param, gdes->vname);
4975 case VDEF_LSLCORREL:
4977 gdes->vf.param = DNAN;
4978 gdes->vf.val = DNAN;
4983 ("Function '%s' needs no parameter in VDEF '%s'\n",
4997 graph_desc_t *src, *dst;
5001 dst = &im->gdes[gdi];
5002 src = &im->gdes[dst->vidx];
5003 data = src->data + src->ds;
5005 steps = (src->end - src->start) / src->step;
5008 ("DEBUG: start == %lu, end == %lu, %lu steps\n",
5009 src->start, src->end, steps);
5011 switch (dst->vf.op) {
5015 if ((array = (rrd_value_t*)malloc(steps * sizeof(double))) == NULL) {
5016 rrd_set_error("malloc VDEV_PERCENT");
5019 for (step = 0; step < steps; step++) {
5020 array[step] = data[step * src->ds_cnt];
5022 qsort(array, step, sizeof(double), vdef_percent_compar);
5023 field = round((dst->vf.param * (double)(steps - 1)) / 100.0);
5024 dst->vf.val = array[field];
5025 dst->vf.when = 0; /* no time component */
5029 for (step = 0; step < steps; step++)
5030 printf("DEBUG: %3li:%10.2f %c\n",
5031 step, array[step], step == field ? '*' : ' ');
5035 case VDEF_PERCENTNAN:{
5038 /* count number of "valid" values */
5040 for (step = 0; step < steps; step++) {
5041 if (!isnan(data[step * src->ds_cnt])) { nancount++; }
5043 /* and allocate it */
5044 if ((array = (rrd_value_t*)malloc(nancount * sizeof(double))) == NULL) {
5045 rrd_set_error("malloc VDEV_PERCENT");
5048 /* and fill it in */
5050 for (step = 0; step < steps; step++) {
5051 if (!isnan(data[step * src->ds_cnt])) {
5052 array[field] = data[step * src->ds_cnt];
5056 qsort(array, nancount, sizeof(double), vdef_percent_compar);
5057 field = round( dst->vf.param * (double)(nancount - 1) / 100.0);
5058 dst->vf.val = array[field];
5059 dst->vf.when = 0; /* no time component */
5066 while (step != steps && isnan(data[step * src->ds_cnt]))
5068 if (step == steps) {
5073 dst->vf.val = data[step * src->ds_cnt];
5074 dst->vf.when = src->start + (step + 1) * src->step;
5077 while (step != steps) {
5078 if (finite(data[step * src->ds_cnt])) {
5079 if (data[step * src->ds_cnt] > dst->vf.val) {
5080 dst->vf.val = data[step * src->ds_cnt];
5081 dst->vf.when = src->start + (step + 1) * src->step;
5093 double average = 0.0;
5095 for (step = 0; step < steps; step++) {
5096 if (finite(data[step * src->ds_cnt])) {
5097 sum += data[step * src->ds_cnt];
5102 if (dst->vf.op == VDEF_TOTAL) {
5103 dst->vf.val = sum * src->step;
5104 dst->vf.when = 0; /* no time component */
5106 } else if (dst->vf.op == VDEF_AVERAGE) {
5107 dst->vf.val = sum / cnt;
5108 dst->vf.when = 0; /* no time component */
5111 average = sum / cnt;
5113 for (step = 0; step < steps; step++) {
5114 if (finite(data[step * src->ds_cnt])) {
5115 sum += pow((data[step * src->ds_cnt] - average), 2.0);
5118 dst->vf.val = pow(sum / cnt, 0.5);
5119 dst->vf.when = 0; /* no time component */
5131 while (step != steps && isnan(data[step * src->ds_cnt]))
5133 if (step == steps) {
5138 dst->vf.val = data[step * src->ds_cnt];
5139 dst->vf.when = src->start + (step + 1) * src->step;
5142 while (step != steps) {
5143 if (finite(data[step * src->ds_cnt])) {
5144 if (data[step * src->ds_cnt] < dst->vf.val) {
5145 dst->vf.val = data[step * src->ds_cnt];
5146 dst->vf.when = src->start + (step + 1) * src->step;
5154 /* The time value returned here is one step before the
5155 * actual time value. This is the start of the first
5159 while (step != steps && isnan(data[step * src->ds_cnt]))
5161 if (step == steps) { /* all entries were NaN */
5166 dst->vf.val = data[step * src->ds_cnt];
5167 dst->vf.when = src->start + step * src->step;
5172 /* The time value returned here is the
5173 * actual time value. This is the end of the last
5177 while (step >= 0 && isnan(data[step * src->ds_cnt]))
5179 if (step < 0) { /* all entries were NaN */
5184 dst->vf.val = data[step * src->ds_cnt];
5185 dst->vf.when = src->start + (step + 1) * src->step;
5191 case VDEF_LSLCORREL:{
5192 /* Bestfit line by linear least squares method */
5195 double SUMx, SUMy, SUMxy, SUMxx, SUMyy, slope, y_intercept, correl;
5202 for (step = 0; step < steps; step++) {
5203 if (finite(data[step * src->ds_cnt])) {
5206 SUMxx += step * step;
5207 SUMxy += step * data[step * src->ds_cnt];
5208 SUMy += data[step * src->ds_cnt];
5209 SUMyy += data[step * src->ds_cnt] * data[step * src->ds_cnt];
5213 slope = (SUMx * SUMy - cnt * SUMxy) / (SUMx * SUMx - cnt * SUMxx);
5214 y_intercept = (SUMy - slope * SUMx) / cnt;
5217 (SUMx * SUMy) / cnt) /
5219 (SUMx * SUMx) / cnt) * (SUMyy - (SUMy * SUMy) / cnt));
5221 if (dst->vf.op == VDEF_LSLSLOPE) {
5222 dst->vf.val = slope;
5225 } else if (dst->vf.op == VDEF_LSLINT) {
5226 dst->vf.val = y_intercept;
5229 } else if (dst->vf.op == VDEF_LSLCORREL) {
5230 dst->vf.val = correl;
5245 /* NaN < -INF < finite_values < INF */
5246 int vdef_percent_compar(
5252 /* Equality is not returned; this doesn't hurt except
5253 * (maybe) for a little performance.
5256 /* First catch NaN values. They are smallest */
5257 if (isnan(*(double *) a))
5259 if (isnan(*(double *) b))
5261 /* NaN doesn't reach this part so INF and -INF are extremes.
5262 * The sign from isinf() is compatible with the sign we return
5264 if (isinf(*(double *) a))
5265 return isinf(*(double *) a);
5266 if (isinf(*(double *) b))
5267 return isinf(*(double *) b);
5268 /* If we reach this, both values must be finite */
5269 if (*(double *) a < *(double *) b)
5278 rrd_info_type_t type,
5279 rrd_infoval_t value)
5281 im->grinfo_current = rrd_info_push(im->grinfo_current, key, type, value);
5282 if (im->grinfo == NULL) {
5283 im->grinfo = im->grinfo_current;
5294 /* Handling based on
5295 - ANSI C99 Specifications http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf
5296 - Single UNIX Specification version 2 http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html
5297 - POSIX:2001/Single UNIX Specification version 3 http://www.opengroup.org/onlinepubs/009695399/functions/strftime.html
5298 - POSIX:2008 Specifications http://www.opengroup.org/onlinepubs/9699919799/functions/strftime.html
5299 Specifications tells
5300 "If a conversion specifier is not one of the above, the behavior is undefined."
5303 "A conversion specifier consists of a % character, possibly followed by an E or O modifier character (described below), followed by a character that determines the behavior of the conversion specifier.
5306 "A conversion specification consists of a '%' character, possibly followed by an E or O modifier, and a terminating conversion specifier character that determines the conversion specification's behavior."
5308 POSIX:2008 introduce more complexe behavior that are not handled here.
5310 According to this, this code will replace:
5311 - % followed by @ by a %@
5312 - % followed by by a %SPACE
5313 - % followed by . by a %.
5314 - % followed by % by a %
5315 - % followed by t by a TAB
5316 - % followed by E then anything by '-'
5317 - % followed by O then anything by '-'
5318 - % followed by anything else by at least one '-'. More characters may be added to better fit expected output length
5322 for(j = 0; (j < FMT_LEG_LEN - 1) && (jj < FMT_LEG_LEN); j++) { /* we don't need to parse the last char */
5323 if (format[j] == '%') {
5324 if ((format[j+1] == 'E') || (format[j+1] == 'O')) {
5326 j+=2; /* We skip next 2 following char */
5327 } else if ((format[j+1] == 'C') || (format[j+1] == 'd') ||
5328 (format[j+1] == 'g') || (format[j+1] == 'H') ||
5329 (format[j+1] == 'I') || (format[j+1] == 'm') ||
5330 (format[j+1] == 'M') || (format[j+1] == 'S') ||
5331 (format[j+1] == 'U') || (format[j+1] == 'V') ||
5332 (format[j+1] == 'W') || (format[j+1] == 'y')) {
5334 if (jj < FMT_LEG_LEN) {
5337 j++; /* We skip the following char */
5338 } else if (format[j+1] == 'j') {
5340 if (jj < FMT_LEG_LEN - 1) {
5344 j++; /* We skip the following char */
5345 } else if ((format[j+1] == 'G') || (format[j+1] == 'Y')) {
5346 /* Assuming Year on 4 digit */
5348 if (jj < FMT_LEG_LEN - 2) {
5353 j++; /* We skip the following char */
5354 } else if (format[j+1] == 'R') {
5356 if (jj < FMT_LEG_LEN - 3) {
5362 j++; /* We skip the following char */
5363 } else if (format[j+1] == 'T') {
5365 if (jj < FMT_LEG_LEN - 6) {
5374 j++; /* We skip the following char */
5375 } else if (format[j+1] == 'F') {
5377 if (jj < FMT_LEG_LEN - 8) {
5388 j++; /* We skip the following char */
5389 } else if (format[j+1] == 'D') {
5391 if (jj < FMT_LEG_LEN - 6) {
5400 j++; /* We skip the following char */
5401 } else if (format[j+1] == 'n') {
5402 result[jj++] = '\r';
5403 result[jj++] = '\n';
5404 j++; /* We skip the following char */
5405 } else if (format[j+1] == 't') {
5406 result[jj++] = '\t';
5407 j++; /* We skip the following char */
5408 } else if (format[j+1] == '%') {
5410 j++; /* We skip the following char */
5411 } else if (format[j+1] == ' ') {
5412 if (jj < FMT_LEG_LEN - 1) {
5416 j++; /* We skip the following char */
5417 } else if (format[j+1] == '.') {
5418 if (jj < FMT_LEG_LEN - 1) {
5422 j++; /* We skip the following char */
5423 } else if (format[j+1] == '@') {
5424 if (jj < FMT_LEG_LEN - 1) {
5428 j++; /* We skip the following char */
5431 j++; /* We skip the following char */
5434 result[jj++] = format[j];
5437 result[jj] = '\0'; /* We must force the end of the string */