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);
259 conv_if(XML, IF_XML);
260 conv_if(XMLENUM, IF_XMLENUM);
261 conv_if(CSV, IF_CSV);
262 conv_if(TSV, IF_TSV);
263 conv_if(SSV, IF_SSV);
264 conv_if(JSON, IF_JSON);
265 conv_if(JSONTIME, IF_JSONTIME);
267 return (enum gfx_if_en)(-1);
270 enum gfx_type_en type_conv(
273 conv_if(TIME , GTYPE_TIME);
274 conv_if(XY, GTYPE_XY);
275 return (enum gfx_type_en)(-1);
278 enum tmt_en tmt_conv(
282 conv_if(SECOND, TMT_SECOND);
283 conv_if(MINUTE, TMT_MINUTE);
284 conv_if(HOUR, TMT_HOUR);
285 conv_if(DAY, TMT_DAY);
286 conv_if(WEEK, TMT_WEEK);
287 conv_if(MONTH, TMT_MONTH);
288 conv_if(YEAR, TMT_YEAR);
289 return (enum tmt_en)(-1);
292 enum grc_en grc_conv(
296 conv_if(BACK, GRC_BACK);
297 conv_if(CANVAS, GRC_CANVAS);
298 conv_if(SHADEA, GRC_SHADEA);
299 conv_if(SHADEB, GRC_SHADEB);
300 conv_if(GRID, GRC_GRID);
301 conv_if(MGRID, GRC_MGRID);
302 conv_if(FONT, GRC_FONT);
303 conv_if(ARROW, GRC_ARROW);
304 conv_if(AXIS, GRC_AXIS);
305 conv_if(FRAME, GRC_FRAME);
307 return (enum grc_en)(-1);
310 enum text_prop_en text_prop_conv(
314 conv_if(DEFAULT, TEXT_PROP_DEFAULT);
315 conv_if(TITLE, TEXT_PROP_TITLE);
316 conv_if(AXIS, TEXT_PROP_AXIS);
317 conv_if(UNIT, TEXT_PROP_UNIT);
318 conv_if(LEGEND, TEXT_PROP_LEGEND);
319 conv_if(WATERMARK, TEXT_PROP_WATERMARK);
320 return (enum text_prop_en)(-1);
330 cairo_status_t status = (cairo_status_t) 0;
335 if (im->daemon_addr != NULL)
336 free(im->daemon_addr);
338 for (i = 0; i < (unsigned) im->gdes_c; i++) {
339 if (im->gdes[i].data_first) {
340 /* careful here, because a single pointer can occur several times */
341 free(im->gdes[i].data);
342 if (im->gdes[i].ds_namv) {
343 for (ii = 0; ii < im->gdes[i].ds_cnt; ii++)
344 free(im->gdes[i].ds_namv[ii]);
345 free(im->gdes[i].ds_namv);
348 /* free allocated memory used for dashed lines */
349 if (im->gdes[i].p_dashes != NULL)
350 free(im->gdes[i].p_dashes);
352 free(im->gdes[i].p_data);
353 free(im->gdes[i].rpnp);
357 for (i = 0; i < DIM(text_prop);i++){
358 pango_font_description_free(im->text_prop[i].font_desc);
359 im->text_prop[i].font_desc = NULL;
362 if (im->font_options)
363 cairo_font_options_destroy(im->font_options);
366 status = cairo_status(im->cr);
367 cairo_destroy(im->cr);
371 if (im->rendered_image) {
372 free(im->rendered_image);
376 g_object_unref (im->layout);
380 cairo_surface_destroy(im->surface);
383 fprintf(stderr, "OOPS: Cairo has issues it can't even die: %s\n",
384 cairo_status_to_string(status));
389 /* find SI magnitude symbol for the given number*/
391 image_desc_t *im, /* image description */
397 char *symbol[] = { "a", /* 10e-18 Atto */
398 "f", /* 10e-15 Femto */
399 "p", /* 10e-12 Pico */
400 "n", /* 10e-9 Nano */
401 "u", /* 10e-6 Micro */
402 "m", /* 10e-3 Milli */
407 "T", /* 10e12 Tera */
408 "P", /* 10e15 Peta */
415 if (*value == 0.0 || isnan(*value)) {
419 sindex = floor(log(fabs(*value)) / log((double) im->base));
420 *magfact = pow((double) im->base, (double) sindex);
421 (*value) /= (*magfact);
423 if (sindex <= symbcenter && sindex >= -symbcenter) {
424 (*symb_ptr) = symbol[sindex + symbcenter];
432 static char si_symbol[] = {
433 'y', /* 10e-24 Yocto */
434 'z', /* 10e-21 Zepto */
435 'a', /* 10e-18 Atto */
436 'f', /* 10e-15 Femto */
437 'p', /* 10e-12 Pico */
438 'n', /* 10e-9 Nano */
439 'u', /* 10e-6 Micro */
440 'm', /* 10e-3 Milli */
445 'T', /* 10e12 Tera */
446 'P', /* 10e15 Peta */
448 'Z', /* 10e21 Zeta */
449 'Y' /* 10e24 Yotta */
451 static const int si_symbcenter = 8;
453 /* find SI magnitude symbol for the numbers on the y-axis*/
455 image_desc_t *im /* image description */
459 double digits, viewdigits = 0;
462 floor(log(max(fabs(im->minval), fabs(im->maxval))) /
463 log((double) im->base));
465 if (im->unitsexponent != 9999) {
466 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
467 viewdigits = floor((double)(im->unitsexponent / 3));
472 im->magfact = pow((double) im->base, digits);
475 printf("digits %6.3f im->magfact %6.3f\n", digits, im->magfact);
478 im->viewfactor = im->magfact / pow((double) im->base, viewdigits);
480 if (((viewdigits + si_symbcenter) < sizeof(si_symbol)) &&
481 ((viewdigits + si_symbcenter) >= 0))
482 im->symbol = si_symbol[(int) viewdigits + si_symbcenter];
487 /* move min and max values around to become sensible */
492 double sensiblevalues[] = { 1000.0, 900.0, 800.0, 750.0, 700.0,
493 600.0, 500.0, 400.0, 300.0, 250.0,
494 200.0, 125.0, 100.0, 90.0, 80.0,
495 75.0, 70.0, 60.0, 50.0, 40.0, 30.0,
496 25.0, 20.0, 10.0, 9.0, 8.0,
497 7.0, 6.0, 5.0, 4.0, 3.5, 3.0,
498 2.5, 2.0, 1.8, 1.5, 1.2, 1.0,
499 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.0, -1
502 double scaled_min, scaled_max;
509 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
510 im->minval, im->maxval, im->magfact);
513 if (isnan(im->ygridstep)) {
514 if (im->extra_flags & ALTAUTOSCALE) {
515 /* measure the amplitude of the function. Make sure that
516 graph boundaries are slightly higher then max/min vals
517 so we can see amplitude on the graph */
520 delt = im->maxval - im->minval;
522 fact = 2.0 * pow(10.0,
524 (max(fabs(im->minval), fabs(im->maxval)) /
527 adj = (fact - delt) * 0.55;
530 ("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n",
531 im->minval, im->maxval, delt, fact, adj);
536 } else if (im->extra_flags & ALTAUTOSCALE_MIN) {
537 /* measure the amplitude of the function. Make sure that
538 graph boundaries are slightly lower than min vals
539 so we can see amplitude on the graph */
540 adj = (im->maxval - im->minval) * 0.1;
542 } else if (im->extra_flags & ALTAUTOSCALE_MAX) {
543 /* measure the amplitude of the function. Make sure that
544 graph boundaries are slightly higher than max vals
545 so we can see amplitude on the graph */
546 adj = (im->maxval - im->minval) * 0.1;
549 scaled_min = im->minval / im->magfact;
550 scaled_max = im->maxval / im->magfact;
552 for (i = 1; sensiblevalues[i] > 0; i++) {
553 if (sensiblevalues[i - 1] >= scaled_min &&
554 sensiblevalues[i] <= scaled_min)
555 im->minval = sensiblevalues[i] * (im->magfact);
557 if (-sensiblevalues[i - 1] <= scaled_min &&
558 -sensiblevalues[i] >= scaled_min)
559 im->minval = -sensiblevalues[i - 1] * (im->magfact);
561 if (sensiblevalues[i - 1] >= scaled_max &&
562 sensiblevalues[i] <= scaled_max)
563 im->maxval = sensiblevalues[i - 1] * (im->magfact);
565 if (-sensiblevalues[i - 1] <= scaled_max &&
566 -sensiblevalues[i] >= scaled_max)
567 im->maxval = -sensiblevalues[i] * (im->magfact);
571 /* adjust min and max to the grid definition if there is one */
572 im->minval = (double) im->ylabfact * im->ygridstep *
573 floor(im->minval / ((double) im->ylabfact * im->ygridstep));
574 im->maxval = (double) im->ylabfact * im->ygridstep *
575 ceil(im->maxval / ((double) im->ylabfact * im->ygridstep));
579 fprintf(stderr, "SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
580 im->minval, im->maxval, im->magfact);
588 if (isnan(im->minval) || isnan(im->maxval))
591 if (im->logarithmic) {
592 double ya, yb, ypix, ypixfrac;
593 double log10_range = log10(im->maxval) - log10(im->minval);
595 ya = pow((double) 10, floor(log10(im->minval)));
596 while (ya < im->minval)
599 return; /* don't have y=10^x gridline */
601 if (yb <= im->maxval) {
602 /* we have at least 2 y=10^x gridlines.
603 Make sure distance between them in pixels
604 are an integer by expanding im->maxval */
605 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
606 double factor = y_pixel_delta / floor(y_pixel_delta);
607 double new_log10_range = factor * log10_range;
608 double new_ymax_log10 = log10(im->minval) + new_log10_range;
610 im->maxval = pow(10, new_ymax_log10);
611 ytr(im, DNAN); /* reset precalc */
612 log10_range = log10(im->maxval) - log10(im->minval);
614 /* make sure first y=10^x gridline is located on
615 integer pixel position by moving scale slightly
616 downwards (sub-pixel movement) */
617 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
618 ypixfrac = ypix - floor(ypix);
619 if (ypixfrac > 0 && ypixfrac < 1) {
620 double yfrac = ypixfrac / im->ysize;
622 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
623 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
624 ytr(im, DNAN); /* reset precalc */
627 /* Make sure we have an integer pixel distance between
628 each minor gridline */
629 double ypos1 = ytr(im, im->minval);
630 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
631 double y_pixel_delta = ypos1 - ypos2;
632 double factor = y_pixel_delta / floor(y_pixel_delta);
633 double new_range = factor * (im->maxval - im->minval);
634 double gridstep = im->ygrid_scale.gridstep;
635 double minor_y, minor_y_px, minor_y_px_frac;
637 if (im->maxval > 0.0)
638 im->maxval = im->minval + new_range;
640 im->minval = im->maxval - new_range;
641 ytr(im, DNAN); /* reset precalc */
642 /* make sure first minor gridline is on integer pixel y coord */
643 minor_y = gridstep * floor(im->minval / gridstep);
644 while (minor_y < im->minval)
646 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
647 minor_y_px_frac = minor_y_px - floor(minor_y_px);
648 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
649 double yfrac = minor_y_px_frac / im->ysize;
650 double range = im->maxval - im->minval;
652 im->minval = im->minval - yfrac * range;
653 im->maxval = im->maxval - yfrac * range;
654 ytr(im, DNAN); /* reset precalc */
656 calc_horizontal_grid(im); /* recalc with changed im->maxval */
660 /* reduce data reimplementation by Alex */
663 enum cf_en cf, /* which consolidation function ? */
664 unsigned long cur_step, /* step the data currently is in */
665 time_t *start, /* start, end and step as requested ... */
666 time_t *end, /* ... by the application will be ... */
667 unsigned long *step, /* ... adjusted to represent reality */
668 unsigned long *ds_cnt, /* number of data sources in file */
670 { /* two dimensional array containing the data */
671 int i, reduce_factor = ceil((double) (*step) / (double) cur_step);
672 unsigned long col, dst_row, row_cnt, start_offset, end_offset, skiprows =
674 rrd_value_t *srcptr, *dstptr;
676 (*step) = cur_step * reduce_factor; /* set new step size for reduced data */
679 row_cnt = ((*end) - (*start)) / cur_step;
685 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
686 row_cnt, reduce_factor, *start, *end, cur_step);
687 for (col = 0; col < row_cnt; col++) {
688 printf("time %10lu: ", *start + (col + 1) * cur_step);
689 for (i = 0; i < *ds_cnt; i++)
690 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
695 /* We have to combine [reduce_factor] rows of the source
696 ** into one row for the destination. Doing this we also
697 ** need to take care to combine the correct rows. First
698 ** alter the start and end time so that they are multiples
699 ** of the new step time. We cannot reduce the amount of
700 ** time so we have to move the end towards the future and
701 ** the start towards the past.
703 end_offset = (*end) % (*step);
704 start_offset = (*start) % (*step);
706 /* If there is a start offset (which cannot be more than
707 ** one destination row), skip the appropriate number of
708 ** source rows and one destination row. The appropriate
709 ** number is what we do know (start_offset/cur_step) of
710 ** the new interval (*step/cur_step aka reduce_factor).
713 printf("start_offset: %lu end_offset: %lu\n", start_offset, end_offset);
714 printf("row_cnt before: %lu\n", row_cnt);
717 (*start) = (*start) - start_offset;
718 skiprows = reduce_factor - start_offset / cur_step;
719 srcptr += skiprows * *ds_cnt;
720 for (col = 0; col < (*ds_cnt); col++)
725 printf("row_cnt between: %lu\n", row_cnt);
728 /* At the end we have some rows that are not going to be
729 ** used, the amount is end_offset/cur_step
732 (*end) = (*end) - end_offset + (*step);
733 skiprows = end_offset / cur_step;
737 printf("row_cnt after: %lu\n", row_cnt);
740 /* Sanity check: row_cnt should be multiple of reduce_factor */
741 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
743 if (row_cnt % reduce_factor) {
744 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
745 row_cnt, reduce_factor);
746 printf("BUG in reduce_data()\n");
750 /* Now combine reduce_factor intervals at a time
751 ** into one interval for the destination.
754 for (dst_row = 0; (long int) row_cnt >= reduce_factor; dst_row++) {
755 for (col = 0; col < (*ds_cnt); col++) {
756 rrd_value_t newval = DNAN;
757 unsigned long validval = 0;
759 for (i = 0; i < reduce_factor; i++) {
760 if (isnan(srcptr[i * (*ds_cnt) + col])) {
765 newval = srcptr[i * (*ds_cnt) + col];
774 newval += srcptr[i * (*ds_cnt) + col];
777 newval = min(newval, srcptr[i * (*ds_cnt) + col]);
780 /* an interval contains a failure if any subintervals contained a failure */
782 newval = max(newval, srcptr[i * (*ds_cnt) + col]);
785 newval = srcptr[i * (*ds_cnt) + col];
811 srcptr += (*ds_cnt) * reduce_factor;
812 row_cnt -= reduce_factor;
814 /* If we had to alter the endtime, we didn't have enough
815 ** source rows to fill the last row. Fill it with NaN.
818 for (col = 0; col < (*ds_cnt); col++)
821 row_cnt = ((*end) - (*start)) / *step;
823 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
824 row_cnt, *start, *end, *step);
825 for (col = 0; col < row_cnt; col++) {
826 printf("time %10lu: ", *start + (col + 1) * (*step));
827 for (i = 0; i < *ds_cnt; i++)
828 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
835 /* get the data required for the graphs from the
844 /* pull the data from the rrd files ... */
845 for (i = 0; i < (int) im->gdes_c; i++) {
846 /* only GF_DEF elements fetch data */
847 if (im->gdes[i].gf != GF_DEF)
851 /* do we have it already ? */
852 for (ii = 0; ii < i; ii++) {
853 if (im->gdes[ii].gf != GF_DEF)
855 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
856 && (im->gdes[i].cf == im->gdes[ii].cf)
857 && (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
858 && (im->gdes[i].start_orig == im->gdes[ii].start_orig)
859 && (im->gdes[i].end_orig == im->gdes[ii].end_orig)
860 && (im->gdes[i].step_orig == im->gdes[ii].step_orig)) {
861 /* OK, the data is already there.
862 ** Just copy the header portion
864 im->gdes[i].start = im->gdes[ii].start;
865 im->gdes[i].end = im->gdes[ii].end;
866 im->gdes[i].step = im->gdes[ii].step;
867 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
868 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
869 im->gdes[i].data = im->gdes[ii].data;
870 im->gdes[i].data_first = 0;
877 unsigned long ft_step = im->gdes[i].step; /* ft_step will record what we got from fetch */
878 const char *rrd_daemon;
881 if (im->gdes[i].daemon[0] != 0)
882 rrd_daemon = im->gdes[i].daemon;
884 rrd_daemon = im->daemon_addr;
886 /* "daemon" may be NULL. ENV_RRDCACHED_ADDRESS is evaluated in that
887 * case. If "daemon" holds the same value as in the previous
888 * iteration, no actual new connection is established - the
889 * existing connection is re-used. */
890 rrdc_connect (rrd_daemon);
892 /* If connecting was successfull, use the daemon to query the data.
893 * If there is no connection, for example because no daemon address
894 * was specified, (try to) use the local file directly. */
895 if (rrdc_is_connected (rrd_daemon))
897 status = rrdc_fetch (im->gdes[i].rrd,
898 cf_to_string (im->gdes[i].cf),
903 &im->gdes[i].ds_namv,
910 if ((rrd_fetch_fn(im->gdes[i].rrd,
916 &im->gdes[i].ds_namv,
917 &im->gdes[i].data)) == -1) {
921 im->gdes[i].data_first = 1;
923 /* must reduce to at least im->step
924 otherwhise we end up with more data than we can handle in the
925 chart and visibility of data will be random */
926 im->gdes[i].step = max(im->gdes[i].step,im->step);
927 if (ft_step < im->gdes[i].step) {
928 reduce_data(im->gdes[i].cf_reduce,
933 &im->gdes[i].ds_cnt, &im->gdes[i].data);
935 im->gdes[i].step = ft_step;
939 /* lets see if the required data source is really there */
940 for (ii = 0; ii < (int) im->gdes[i].ds_cnt; ii++) {
941 if (strcmp(im->gdes[i].ds_namv[ii], im->gdes[i].ds_nam) == 0) {
945 if (im->gdes[i].ds == -1) {
946 rrd_set_error("No DS called '%s' in '%s'",
947 im->gdes[i].ds_nam, im->gdes[i].rrd);
955 /* evaluate the expressions in the CDEF functions */
957 /*************************************************************
959 *************************************************************/
961 long find_var_wrapper(
965 return find_var((image_desc_t *) arg1, key);
968 /* find gdes containing var*/
975 for (ii = 0; ii < im->gdes_c - 1; ii++) {
976 if ((im->gdes[ii].gf == GF_DEF
977 || im->gdes[ii].gf == GF_VDEF || im->gdes[ii].gf == GF_CDEF)
978 && (strcmp(im->gdes[ii].vname, key) == 0)) {
985 /* find the greatest common divisor for all the numbers
986 in the 0 terminated num array */
993 for (i = 0; num[i + 1] != 0; i++) {
995 rest = num[i] % num[i + 1];
1001 /* return i==0?num[i]:num[i-1]; */
1005 /* run the rpn calculator on all the VDEF and CDEF arguments */
1012 long *steparray, rpi;
1015 rpnstack_t rpnstack;
1017 rpnstack_init(&rpnstack);
1019 for (gdi = 0; gdi < im->gdes_c; gdi++) {
1020 /* Look for GF_VDEF and GF_CDEF in the same loop,
1021 * so CDEFs can use VDEFs and vice versa
1023 switch (im->gdes[gdi].gf) {
1027 graph_desc_t *vdp = &im->gdes[im->gdes[gdi].vidx];
1029 /* remove current shift */
1030 vdp->start -= vdp->shift;
1031 vdp->end -= vdp->shift;
1034 if (im->gdes[gdi].shidx >= 0)
1035 vdp->shift = im->gdes[im->gdes[gdi].shidx].vf.val;
1038 vdp->shift = im->gdes[gdi].shval;
1040 /* normalize shift to multiple of consolidated step */
1041 vdp->shift = (vdp->shift / (long) vdp->step) * (long) vdp->step;
1044 vdp->start += vdp->shift;
1045 vdp->end += vdp->shift;
1049 /* A VDEF has no DS. This also signals other parts
1050 * of rrdtool that this is a VDEF value, not a CDEF.
1052 im->gdes[gdi].ds_cnt = 0;
1053 if (vdef_calc(im, gdi)) {
1054 rrd_set_error("Error processing VDEF '%s'",
1055 im->gdes[gdi].vname);
1056 rpnstack_free(&rpnstack);
1061 im->gdes[gdi].ds_cnt = 1;
1062 im->gdes[gdi].ds = 0;
1063 im->gdes[gdi].data_first = 1;
1064 im->gdes[gdi].start = 0;
1065 im->gdes[gdi].end = 0;
1070 /* Find the variables in the expression.
1071 * - VDEF variables are substituted by their values
1072 * and the opcode is changed into OP_NUMBER.
1073 * - CDEF variables are analized for their step size,
1074 * the lowest common denominator of all the step
1075 * sizes of the data sources involved is calculated
1076 * and the resulting number is the step size for the
1077 * resulting data source.
1079 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1080 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1081 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1082 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1084 if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
1087 ("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
1088 im->gdes[gdi].vname, im->gdes[ptr].vname);
1089 printf("DEBUG: value from vdef is %f\n",
1090 im->gdes[ptr].vf.val);
1092 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
1093 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
1094 } else { /* normal variables and PREF(variables) */
1096 /* add one entry to the array that keeps track of the step sizes of the
1097 * data sources going into the CDEF. */
1099 (long*)rrd_realloc(steparray,
1101 1) * sizeof(*steparray))) == NULL) {
1102 rrd_set_error("realloc steparray");
1103 rpnstack_free(&rpnstack);
1107 steparray[stepcnt - 1] = im->gdes[ptr].step;
1109 /* adjust start and end of cdef (gdi) so
1110 * that it runs from the latest start point
1111 * to the earliest endpoint of any of the
1112 * rras involved (ptr)
1115 if (im->gdes[gdi].start < im->gdes[ptr].start)
1116 im->gdes[gdi].start = im->gdes[ptr].start;
1118 if (im->gdes[gdi].end == 0 ||
1119 im->gdes[gdi].end > im->gdes[ptr].end)
1120 im->gdes[gdi].end = im->gdes[ptr].end;
1122 /* store pointer to the first element of
1123 * the rra providing data for variable,
1124 * further save step size and data source
1127 im->gdes[gdi].rpnp[rpi].data =
1128 im->gdes[ptr].data + im->gdes[ptr].ds;
1129 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
1130 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
1132 /* backoff the *.data ptr; this is done so
1133 * rpncalc() function doesn't have to treat
1134 * the first case differently
1136 } /* if ds_cnt != 0 */
1137 } /* if OP_VARIABLE */
1138 } /* loop through all rpi */
1140 /* move the data pointers to the correct period */
1141 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1142 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1143 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1144 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1146 im->gdes[gdi].start - im->gdes[ptr].start;
1149 im->gdes[gdi].rpnp[rpi].data +=
1150 (diff / im->gdes[ptr].step) *
1151 im->gdes[ptr].ds_cnt;
1155 if (steparray == NULL) {
1156 rrd_set_error("rpn expressions without DEF"
1157 " or CDEF variables are not supported");
1158 rpnstack_free(&rpnstack);
1161 steparray[stepcnt] = 0;
1162 /* Now find the resulting step. All steps in all
1163 * used RRAs have to be visited
1165 im->gdes[gdi].step = lcd(steparray);
1167 if ((im->gdes[gdi].data = (rrd_value_t*)malloc(((im->gdes[gdi].end -
1168 im->gdes[gdi].start)
1169 / im->gdes[gdi].step)
1170 * sizeof(double))) == NULL) {
1171 rrd_set_error("malloc im->gdes[gdi].data");
1172 rpnstack_free(&rpnstack);
1176 /* Step through the new cdef results array and
1177 * calculate the values
1179 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
1180 now <= im->gdes[gdi].end; now += im->gdes[gdi].step) {
1181 rpnp_t *rpnp = im->gdes[gdi].rpnp;
1183 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
1184 * in this case we are advancing by timesteps;
1185 * we use the fact that time_t is a synonym for long
1187 if (rpn_calc(rpnp, &rpnstack, (long) now,
1188 im->gdes[gdi].data, ++dataidx) == -1) {
1189 /* rpn_calc sets the error string */
1190 rpnstack_free(&rpnstack);
1193 } /* enumerate over time steps within a CDEF */
1198 } /* enumerate over CDEFs */
1199 rpnstack_free(&rpnstack);
1203 /* from http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm */
1204 /* yes we are loosing precision by doing tos with floats instead of doubles
1205 but it seems more stable this way. */
1207 static int AlmostEqual2sComplement(
1213 int aInt = *(int *) &A;
1214 int bInt = *(int *) &B;
1217 /* Make sure maxUlps is non-negative and small enough that the
1218 default NAN won't compare as equal to anything. */
1220 /* assert(maxUlps > 0 && maxUlps < 4 * 1024 * 1024); */
1222 /* Make aInt lexicographically ordered as a twos-complement int */
1225 aInt = 0x80000000l - aInt;
1227 /* Make bInt lexicographically ordered as a twos-complement int */
1230 bInt = 0x80000000l - bInt;
1232 intDiff = abs(aInt - bInt);
1234 if (intDiff <= maxUlps)
1240 /* massage data so, that we get one value for each x coordinate in the graph */
1245 double pixstep = (double) (im->end - im->start)
1246 / (double) im->xsize; /* how much time
1247 passes in one pixel */
1249 double minval = DNAN, maxval = DNAN;
1251 unsigned long gr_time;
1253 /* memory for the processed data */
1254 for (i = 0; i < im->gdes_c; i++) {
1255 if ((im->gdes[i].gf == GF_LINE)
1256 || (im->gdes[i].gf == GF_AREA)
1257 || (im->gdes[i].gf == GF_TICK)
1258 || (im->gdes[i].gf == GF_GRAD)
1260 if ((im->gdes[i].p_data = (rrd_value_t*)malloc((im->xsize + 1)
1261 * sizeof(rrd_value_t))) == NULL) {
1262 rrd_set_error("malloc data_proc");
1268 for (i = 0; i < im->xsize; i++) { /* for each pixel */
1271 gr_time = im->start + pixstep * i; /* time of the current step */
1274 for (ii = 0; ii < im->gdes_c; ii++) {
1277 switch (im->gdes[ii].gf) {
1282 if (!im->gdes[ii].stack)
1284 value = im->gdes[ii].yrule;
1285 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1286 /* The time of the data doesn't necessarily match
1287 ** the time of the graph. Beware.
1289 vidx = im->gdes[ii].vidx;
1290 if (im->gdes[vidx].gf == GF_VDEF) {
1291 value = im->gdes[vidx].vf.val;
1293 if (((long int) gr_time >=
1294 (long int) im->gdes[vidx].start)
1295 && ((long int) gr_time <
1296 (long int) im->gdes[vidx].end)) {
1297 value = im->gdes[vidx].data[(unsigned long)
1303 im->gdes[vidx].step)
1304 * im->gdes[vidx].ds_cnt +
1311 if (!isnan(value)) {
1313 im->gdes[ii].p_data[i] = paintval;
1314 /* GF_TICK: the data values are not
1315 ** relevant for min and max
1317 if (finite(paintval) && im->gdes[ii].gf != GF_TICK) {
1318 if ((isnan(minval) || paintval < minval) &&
1319 !(im->logarithmic && paintval <= 0.0))
1321 if (isnan(maxval) || paintval > maxval)
1325 im->gdes[ii].p_data[i] = DNAN;
1330 ("STACK should already be turned into LINE or AREA here");
1339 /* if min or max have not been asigned a value this is because
1340 there was no data in the graph ... this is not good ...
1341 lets set these to dummy values then ... */
1343 if (im->logarithmic) {
1344 if (isnan(minval) || isnan(maxval) || maxval <= 0) {
1345 minval = 0.0; /* catching this right away below */
1348 /* in logarithm mode, where minval is smaller or equal
1349 to 0 make the beast just way smaller than maxval */
1351 minval = maxval / 10e8;
1354 if (isnan(minval) || isnan(maxval)) {
1360 /* adjust min and max values given by the user */
1361 /* for logscale we add something on top */
1362 if (isnan(im->minval)
1363 || ((!im->rigid) && im->minval > minval)
1365 if (im->logarithmic)
1366 im->minval = minval / 2.0;
1368 im->minval = minval;
1370 if (isnan(im->maxval)
1371 || (!im->rigid && im->maxval < maxval)
1373 if (im->logarithmic)
1374 im->maxval = maxval * 2.0;
1376 im->maxval = maxval;
1379 /* make sure min is smaller than max */
1380 if (im->minval > im->maxval) {
1382 im->minval = 0.99 * im->maxval;
1384 im->minval = 1.01 * im->maxval;
1387 /* make sure min and max are not equal */
1388 if (AlmostEqual2sComplement(im->minval, im->maxval, 4)) {
1394 /* make sure min and max are not both zero */
1395 if (AlmostEqual2sComplement(im->maxval, 0, 4)) {
1402 static int find_first_weekday(void){
1403 static int first_weekday = -1;
1404 if (first_weekday == -1){
1405 #ifdef HAVE__NL_TIME_WEEK_1STDAY
1406 /* according to http://sourceware.org/ml/libc-locales/2009-q1/msg00011.html */
1407 long week_1stday_l = (long) nl_langinfo (_NL_TIME_WEEK_1STDAY);
1408 if (week_1stday_l == 19971130) first_weekday = 0; /* Sun */
1409 else if (week_1stday_l == 19971201) first_weekday = 1; /* Mon */
1410 else first_weekday = 1; /* we go for a monday default */
1415 return first_weekday;
1418 /* identify the point where the first gridline, label ... gets placed */
1420 time_t find_first_time(
1421 time_t start, /* what is the initial time */
1422 enum tmt_en baseint, /* what is the basic interval */
1423 long basestep /* how many if these do we jump a time */
1428 localtime_r(&start, &tm);
1432 tm. tm_sec -= tm.tm_sec % basestep;
1437 tm. tm_min -= tm.tm_min % basestep;
1443 tm. tm_hour -= tm.tm_hour % basestep;
1447 /* we do NOT look at the basestep for this ... */
1454 /* we do NOT look at the basestep for this ... */
1458 tm. tm_mday -= tm.tm_wday - find_first_weekday();
1460 if (tm.tm_wday == 0 && find_first_weekday() > 0)
1461 tm. tm_mday -= 7; /* we want the *previous* week */
1469 tm. tm_mon -= tm.tm_mon % basestep;
1480 tm.tm_year + 1900) %basestep;
1486 /* identify the point where the next gridline, label ... gets placed */
1487 time_t find_next_time(
1488 time_t current, /* what is the initial time */
1489 enum tmt_en baseint, /* what is the basic interval */
1490 long basestep /* how many if these do we jump a time */
1496 localtime_r(¤t, &tm);
1500 case TMT_SECOND: limit = 7200; break;
1501 case TMT_MINUTE: limit = 120; break;
1502 case TMT_HOUR: limit = 2; break;
1503 default: limit = 2; break;
1508 tm. tm_sec += basestep;
1512 tm. tm_min += basestep;
1516 tm. tm_hour += basestep;
1520 tm. tm_mday += basestep;
1524 tm. tm_mday += 7 * basestep;
1528 tm. tm_mon += basestep;
1532 tm. tm_year += basestep;
1534 madetime = mktime(&tm);
1535 } while (madetime == -1 && limit-- >= 0); /* this is necessary to skip impossible times
1536 like the daylight saving time skips */
1542 /* calculate values required for PRINT and GPRINT functions */
1547 long i, ii, validsteps;
1550 int graphelement = 0;
1553 double magfact = -1;
1558 /* wow initializing tmvdef is quite a task :-) */
1559 time_t now = time(NULL);
1561 localtime_r(&now, &tmvdef);
1562 for (i = 0; i < im->gdes_c; i++) {
1563 vidx = im->gdes[i].vidx;
1564 switch (im->gdes[i].gf) {
1567 /* PRINT and GPRINT can now print VDEF generated values.
1568 * There's no need to do any calculations on them as these
1569 * calculations were already made.
1571 if (im->gdes[vidx].gf == GF_VDEF) { /* simply use vals */
1572 printval = im->gdes[vidx].vf.val;
1573 localtime_r(&im->gdes[vidx].vf.when, &tmvdef);
1574 } else { /* need to calculate max,min,avg etcetera */
1575 max_ii = ((im->gdes[vidx].end - im->gdes[vidx].start)
1576 / im->gdes[vidx].step * im->gdes[vidx].ds_cnt);
1579 for (ii = im->gdes[vidx].ds;
1580 ii < max_ii; ii += im->gdes[vidx].ds_cnt) {
1581 if (!finite(im->gdes[vidx].data[ii]))
1583 if (isnan(printval)) {
1584 printval = im->gdes[vidx].data[ii];
1589 switch (im->gdes[i].cf) {
1593 case CF_DEVSEASONAL:
1597 printval += im->gdes[vidx].data[ii];
1600 printval = min(printval, im->gdes[vidx].data[ii]);
1604 printval = max(printval, im->gdes[vidx].data[ii]);
1607 printval = im->gdes[vidx].data[ii];
1610 if (im->gdes[i].cf == CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1611 if (validsteps > 1) {
1612 printval = (printval / validsteps);
1615 } /* prepare printval */
1617 if (!im->gdes[i].strftm && (percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
1618 /* Magfact is set to -1 upon entry to print_calc. If it
1619 * is still less than 0, then we need to run auto_scale.
1620 * Otherwise, put the value into the correct units. If
1621 * the value is 0, then do not set the symbol or magnification
1622 * so next the calculation will be performed again. */
1623 if (magfact < 0.0) {
1624 auto_scale(im, &printval, &si_symb, &magfact);
1625 if (printval == 0.0)
1628 printval /= magfact;
1630 *(++percent_s) = 's';
1631 } else if (!im->gdes[i].strftm && strstr(im->gdes[i].format, "%s") != NULL) {
1632 auto_scale(im, &printval, &si_symb, &magfact);
1635 if (im->gdes[i].gf == GF_PRINT) {
1636 rrd_infoval_t prline;
1638 if (im->gdes[i].strftm) {
1639 prline.u_str = (char*)malloc((FMT_LEG_LEN + 2) * sizeof(char));
1640 if (im->gdes[vidx].vf.never == 1) {
1641 time_clean(prline.u_str, im->gdes[i].format);
1643 strftime(prline.u_str,
1644 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1646 } else if (bad_format(im->gdes[i].format)) {
1648 ("bad format for PRINT in '%s'", im->gdes[i].format);
1652 sprintf_alloc(im->gdes[i].format, printval, si_symb);
1656 ("print[%ld]", prline_cnt++), RD_I_STR, prline);
1661 if (im->gdes[i].strftm) {
1662 if (im->gdes[vidx].vf.never == 1) {
1663 time_clean(im->gdes[i].legend, im->gdes[i].format);
1665 strftime(im->gdes[i].legend,
1666 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1669 if (bad_format(im->gdes[i].format)) {
1671 ("bad format for GPRINT in '%s'",
1672 im->gdes[i].format);
1675 #ifdef HAVE_SNPRINTF
1676 snprintf(im->gdes[i].legend,
1678 im->gdes[i].format, printval, si_symb);
1680 sprintf(im->gdes[i].legend,
1681 im->gdes[i].format, printval, si_symb);
1694 if (isnan(im->gdes[i].yrule)) { /* we must set this here or the legend printer can not decide to print the legend */
1695 im->gdes[i].yrule = im->gdes[vidx].vf.val;
1700 if (im->gdes[i].xrule == 0) { /* again ... the legend printer needs it */
1701 im->gdes[i].xrule = im->gdes[vidx].vf.when;
1710 #ifdef WITH_PIECHART
1718 ("STACK should already be turned into LINE or AREA here");
1723 return graphelement;
1728 /* place legends with color spots */
1734 int interleg = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1735 int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1736 int fill = 0, fill_last;
1737 double legendwidth; // = im->ximg - 2 * border;
1739 double leg_x = border;
1740 int leg_y = 0; //im->yimg;
1741 int leg_y_prev = 0; // im->yimg;
1744 int i, ii, mark = 0;
1745 char default_txtalign = TXA_JUSTIFIED; /*default line orientation */
1748 char saved_legend[FMT_LEG_LEN + 5];
1754 legendwidth = im->legendwidth - 2 * border;
1758 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
1759 if ((legspace = (int*)malloc(im->gdes_c * sizeof(int))) == NULL) {
1760 rrd_set_error("malloc for legspace");
1764 for (i = 0; i < im->gdes_c; i++) {
1765 char prt_fctn; /*special printfunctions */
1767 strcpy(saved_legend, im->gdes[i].legend);
1771 /* hide legends for rules which are not displayed */
1772 if (im->gdes[i].gf == GF_TEXTALIGN) {
1773 default_txtalign = im->gdes[i].txtalign;
1776 if (!(im->extra_flags & FORCE_RULES_LEGEND)) {
1777 if (im->gdes[i].gf == GF_HRULE
1778 && (im->gdes[i].yrule <
1779 im->minval || im->gdes[i].yrule > im->maxval))
1780 im->gdes[i].legend[0] = '\0';
1781 if (im->gdes[i].gf == GF_VRULE
1782 && (im->gdes[i].xrule <
1783 im->start || im->gdes[i].xrule > im->end))
1784 im->gdes[i].legend[0] = '\0';
1787 /* turn \\t into tab */
1788 while ((tab = strstr(im->gdes[i].legend, "\\t"))) {
1789 memmove(tab, tab + 1, strlen(tab));
1793 leg_cc = strlen(im->gdes[i].legend);
1794 /* is there a controle code at the end of the legend string ? */
1795 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc - 2] == '\\') {
1796 prt_fctn = im->gdes[i].legend[leg_cc - 1];
1798 im->gdes[i].legend[leg_cc] = '\0';
1802 /* only valid control codes */
1803 if (prt_fctn != 'l' && prt_fctn != 'n' && /* a synonym for l */
1809 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
1812 ("Unknown control code at the end of '%s\\%c'",
1813 im->gdes[i].legend, prt_fctn);
1817 if (prt_fctn == 'n') {
1820 /* \. is a null operation to allow strings ending in \x */
1821 if (prt_fctn == '.') {
1825 /* remove exess space from the end of the legend for \g */
1826 while (prt_fctn == 'g' &&
1827 leg_cc > 0 && im->gdes[i].legend[leg_cc - 1] == ' ') {
1829 im->gdes[i].legend[leg_cc] = '\0';
1834 /* no interleg space if string ends in \g */
1835 legspace[i] = (prt_fctn == 'g' ? 0 : interleg);
1837 fill += legspace[i];
1840 gfx_get_text_width(im,
1846 im->tabwidth, im->gdes[i].legend);
1851 /* who said there was a special tag ... ? */
1852 if (prt_fctn == 'g') {
1856 if (prt_fctn == '\0') {
1857 if(calc_width && (fill > legendwidth)){
1860 if (i == im->gdes_c - 1 || fill > legendwidth) {
1861 /* just one legend item is left right or center */
1862 switch (default_txtalign) {
1877 /* is it time to place the legends ? */
1878 if (fill > legendwidth) {
1886 if (leg_c == 1 && prt_fctn == 'j') {
1891 if (prt_fctn != '\0') {
1893 if (leg_c >= 2 && prt_fctn == 'j') {
1894 glue = (double)(legendwidth - fill) / (double)(leg_c - 1);
1898 if (prt_fctn == 'c')
1899 leg_x = border + (double)(legendwidth - fill) / 2.0;
1900 if (prt_fctn == 'r')
1901 leg_x = legendwidth - fill + border;
1902 for (ii = mark; ii <= i; ii++) {
1903 if (im->gdes[ii].legend[0] == '\0')
1904 continue; /* skip empty legends */
1905 im->gdes[ii].leg_x = leg_x;
1906 im->gdes[ii].leg_y = leg_y + border;
1908 (double)gfx_get_text_width(im, leg_x,
1913 im->tabwidth, im->gdes[ii].legend)
1914 +(double)legspace[ii]
1918 if (leg_x > border || prt_fctn == 's')
1919 leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1920 if (prt_fctn == 's')
1921 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
1922 if (prt_fctn == 'u')
1923 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size *1.8;
1925 if(calc_width && (fill > legendwidth)){
1934 strcpy(im->gdes[i].legend, saved_legend);
1939 im->legendwidth = legendwidth + 2 * border;
1942 im->legendheight = leg_y + border * 0.6;
1949 /* create a grid on the graph. it determines what to do
1950 from the values of xsize, start and end */
1952 /* the xaxis labels are determined from the number of seconds per pixel
1953 in the requested graph */
1955 int calc_horizontal_grid(
1963 int decimals, fractionals;
1965 im->ygrid_scale.labfact = 2;
1966 range = im->maxval - im->minval;
1967 scaledrange = range / im->magfact;
1968 /* does the scale of this graph make it impossible to put lines
1969 on it? If so, give up. */
1970 if (isnan(scaledrange)) {
1974 /* find grid spaceing */
1976 if (isnan(im->ygridstep)) {
1977 if (im->extra_flags & ALTYGRID) {
1978 /* find the value with max number of digits. Get number of digits */
1981 (max(fabs(im->maxval), fabs(im->minval)) *
1982 im->viewfactor / im->magfact));
1983 if (decimals <= 0) /* everything is small. make place for zero */
1985 im->ygrid_scale.gridstep =
1987 floor(log10(range * im->viewfactor / im->magfact))) /
1988 im->viewfactor * im->magfact;
1989 if (im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1990 im->ygrid_scale.gridstep = 0.1;
1991 /* should have at least 5 lines but no more then 15 */
1992 if (range / im->ygrid_scale.gridstep < 5
1993 && im->ygrid_scale.gridstep >= 30)
1994 im->ygrid_scale.gridstep /= 10;
1995 if (range / im->ygrid_scale.gridstep > 15)
1996 im->ygrid_scale.gridstep *= 10;
1997 if (range / im->ygrid_scale.gridstep > 5) {
1998 im->ygrid_scale.labfact = 1;
1999 if (range / im->ygrid_scale.gridstep > 8
2000 || im->ygrid_scale.gridstep <
2001 1.8 * im->text_prop[TEXT_PROP_AXIS].size)
2002 im->ygrid_scale.labfact = 2;
2004 im->ygrid_scale.gridstep /= 5;
2005 im->ygrid_scale.labfact = 5;
2009 (im->ygrid_scale.gridstep *
2010 (double) im->ygrid_scale.labfact * im->viewfactor /
2012 if (fractionals < 0) { /* small amplitude. */
2013 int len = decimals - fractionals + 1;
2015 if (im->unitslength < len + 2)
2016 im->unitslength = len + 2;
2017 sprintf(im->ygrid_scale.labfmt,
2019 -fractionals, (im->symbol != ' ' ? " %c" : ""));
2021 int len = decimals + 1;
2023 if (im->unitslength < len + 2)
2024 im->unitslength = len + 2;
2025 sprintf(im->ygrid_scale.labfmt,
2026 "%%%d.0f%s", len, (im->symbol != ' ' ? " %c" : ""));
2028 } else { /* classic rrd grid */
2029 for (i = 0; ylab[i].grid > 0; i++) {
2030 pixel = im->ysize / (scaledrange / ylab[i].grid);
2036 for (i = 0; i < 4; i++) {
2037 if (pixel * ylab[gridind].lfac[i] >=
2038 1.8 * im->text_prop[TEXT_PROP_AXIS].size) {
2039 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
2044 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
2047 im->ygrid_scale.gridstep = im->ygridstep;
2048 im->ygrid_scale.labfact = im->ylabfact;
2053 int draw_horizontal_grid(
2059 char graph_label[100];
2061 double X0 = im->xorigin;
2062 double X1 = im->xorigin + im->xsize;
2063 int sgrid = (int) (im->minval / im->ygrid_scale.gridstep - 1);
2064 int egrid = (int) (im->maxval / im->ygrid_scale.gridstep + 1);
2066 double second_axis_magfact = 0;
2067 char *second_axis_symb = "";
2070 im->ygrid_scale.gridstep /
2071 (double) im->magfact * (double) im->viewfactor;
2072 MaxY = scaledstep * (double) egrid;
2073 for (i = sgrid; i <= egrid; i++) {
2075 im->ygrid_scale.gridstep * i);
2077 im->ygrid_scale.gridstep * (i + 1));
2079 if (floor(Y0 + 0.5) >=
2080 im->yorigin - im->ysize && floor(Y0 + 0.5) <= im->yorigin) {
2081 /* Make sure at least 2 grid labels are shown, even if it doesn't agree
2082 with the chosen settings. Add a label if required by settings, or if
2083 there is only one label so far and the next grid line is out of bounds. */
2084 if (i % im->ygrid_scale.labfact == 0
2086 && (YN < im->yorigin - im->ysize || YN > im->yorigin))) {
2087 if (im->symbol == ' ') {
2088 if (im->extra_flags & ALTYGRID) {
2089 sprintf(graph_label,
2090 im->ygrid_scale.labfmt,
2091 scaledstep * (double) i);
2094 sprintf(graph_label, "%4.1f",
2095 scaledstep * (double) i);
2097 sprintf(graph_label, "%4.0f",
2098 scaledstep * (double) i);
2102 char sisym = (i == 0 ? ' ' : im->symbol);
2104 if (im->extra_flags & ALTYGRID) {
2105 sprintf(graph_label,
2106 im->ygrid_scale.labfmt,
2107 scaledstep * (double) i, sisym);
2110 sprintf(graph_label, "%4.1f %c",
2111 scaledstep * (double) i, sisym);
2113 sprintf(graph_label, "%4.0f %c",
2114 scaledstep * (double) i, sisym);
2119 if (im->second_axis_scale != 0){
2120 char graph_label_right[100];
2121 double sval = im->ygrid_scale.gridstep*(double)i*im->second_axis_scale+im->second_axis_shift;
2122 if (im->second_axis_format[0] == '\0'){
2123 if (!second_axis_magfact){
2124 double dummy = im->ygrid_scale.gridstep*(double)(sgrid+egrid)/2.0*im->second_axis_scale+im->second_axis_shift;
2125 auto_scale(im,&dummy,&second_axis_symb,&second_axis_magfact);
2127 sval /= second_axis_magfact;
2130 sprintf(graph_label_right,"%5.1f %s",sval,second_axis_symb);
2132 sprintf(graph_label_right,"%5.0f %s",sval,second_axis_symb);
2136 sprintf(graph_label_right,im->second_axis_format,sval);
2140 im->graph_col[GRC_FONT],
2141 im->text_prop[TEXT_PROP_AXIS].font_desc,
2142 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2143 graph_label_right );
2149 text_prop[TEXT_PROP_AXIS].
2151 im->graph_col[GRC_FONT],
2153 text_prop[TEXT_PROP_AXIS].
2156 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2157 gfx_line(im, X0 - 2, Y0, X0, Y0,
2158 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2159 gfx_line(im, X1, Y0, X1 + 2, Y0,
2160 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2161 gfx_dashed_line(im, X0 - 2, Y0,
2167 im->grid_dash_on, im->grid_dash_off);
2168 } else if (!(im->extra_flags & NOMINOR)) {
2171 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2172 gfx_line(im, X1, Y0, X1 + 2, Y0,
2173 GRIDWIDTH, im->graph_col[GRC_GRID]);
2174 gfx_dashed_line(im, X0 - 1, Y0,
2178 graph_col[GRC_GRID],
2179 im->grid_dash_on, im->grid_dash_off);
2186 /* this is frexp for base 10 */
2197 iexp = floor(log((double)fabs(x)) / log((double)10));
2198 mnt = x / pow(10.0, iexp);
2201 mnt = x / pow(10.0, iexp);
2208 /* logaritmic horizontal grid */
2209 int horizontal_log_grid(
2213 double yloglab[][10] = {
2215 1.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0,
2217 1.0, 5.0, 10., 0.0, 0.0, 0.0, 0.0,
2219 1.0, 2.0, 5.0, 7.0, 10., 0.0, 0.0,
2236 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* last line */
2238 int i, j, val_exp, min_exp;
2239 double nex; /* number of decades in data */
2240 double logscale; /* scale in logarithmic space */
2241 int exfrac = 1; /* decade spacing */
2242 int mid = -1; /* row in yloglab for major grid */
2243 double mspac; /* smallest major grid spacing (pixels) */
2244 int flab; /* first value in yloglab to use */
2245 double value, tmp, pre_value;
2247 char graph_label[100];
2249 nex = log10(im->maxval / im->minval);
2250 logscale = im->ysize / nex;
2251 /* major spacing for data with high dynamic range */
2252 while (logscale * exfrac < 3 * im->text_prop[TEXT_PROP_LEGEND].size) {
2259 /* major spacing for less dynamic data */
2261 /* search best row in yloglab */
2263 for (i = 0; yloglab[mid][i + 1] < 10.0; i++);
2264 mspac = logscale * log10(10.0 / yloglab[mid][i]);
2267 2 * im->text_prop[TEXT_PROP_LEGEND].size && yloglab[mid][0] > 0);
2270 /* find first value in yloglab */
2272 yloglab[mid][flab] < 10
2273 && frexp10(im->minval, &tmp) > yloglab[mid][flab]; flab++);
2274 if (yloglab[mid][flab] == 10.0) {
2279 if (val_exp % exfrac)
2280 val_exp += abs(-val_exp % exfrac);
2282 X1 = im->xorigin + im->xsize;
2287 value = yloglab[mid][flab] * pow(10.0, val_exp);
2288 if (AlmostEqual2sComplement(value, pre_value, 4))
2289 break; /* it seems we are not converging */
2291 Y0 = ytr(im, value);
2292 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2294 /* major grid line */
2296 X0 - 2, Y0, X0, Y0, MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2297 gfx_line(im, X1, Y0, X1 + 2, Y0,
2298 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2299 gfx_dashed_line(im, X0 - 2, Y0,
2304 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2306 if (im->extra_flags & FORCE_UNITS_SI) {
2311 scale = floor(val_exp / 3.0);
2313 pvalue = pow(10.0, val_exp % 3);
2315 pvalue = pow(10.0, ((val_exp + 1) % 3) + 2);
2316 pvalue *= yloglab[mid][flab];
2317 if (((scale + si_symbcenter) < (int) sizeof(si_symbol))
2318 && ((scale + si_symbcenter) >= 0))
2319 symbol = si_symbol[scale + si_symbcenter];
2322 sprintf(graph_label, "%3.0f %c", pvalue, symbol);
2324 sprintf(graph_label, "%3.0e", value);
2326 if (im->second_axis_scale != 0){
2327 char graph_label_right[100];
2328 double sval = value*im->second_axis_scale+im->second_axis_shift;
2329 if (im->second_axis_format[0] == '\0'){
2330 if (im->extra_flags & FORCE_UNITS_SI) {
2333 auto_scale(im,&sval,&symb,&mfac);
2334 sprintf(graph_label_right,"%4.0f %s", sval,symb);
2337 sprintf(graph_label_right,"%3.0e", sval);
2341 sprintf(graph_label_right,im->second_axis_format,sval,"");
2346 im->graph_col[GRC_FONT],
2347 im->text_prop[TEXT_PROP_AXIS].font_desc,
2348 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2349 graph_label_right );
2355 text_prop[TEXT_PROP_AXIS].
2357 im->graph_col[GRC_FONT],
2359 text_prop[TEXT_PROP_AXIS].
2362 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2364 if (mid < 4 && exfrac == 1) {
2365 /* find first and last minor line behind current major line
2366 * i is the first line and j tha last */
2368 min_exp = val_exp - 1;
2369 for (i = 1; yloglab[mid][i] < 10.0; i++);
2370 i = yloglab[mid][i - 1] + 1;
2374 i = yloglab[mid][flab - 1] + 1;
2375 j = yloglab[mid][flab];
2378 /* draw minor lines below current major line */
2379 for (; i < j; i++) {
2381 value = i * pow(10.0, min_exp);
2382 if (value < im->minval)
2384 Y0 = ytr(im, value);
2385 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2390 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2391 gfx_line(im, X1, Y0, X1 + 2, Y0,
2392 GRIDWIDTH, im->graph_col[GRC_GRID]);
2393 gfx_dashed_line(im, X0 - 1, Y0,
2397 graph_col[GRC_GRID],
2398 im->grid_dash_on, im->grid_dash_off);
2400 } else if (exfrac > 1) {
2401 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2402 value = pow(10.0, i);
2403 if (value < im->minval)
2405 Y0 = ytr(im, value);
2406 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2411 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2412 gfx_line(im, X1, Y0, X1 + 2, Y0,
2413 GRIDWIDTH, im->graph_col[GRC_GRID]);
2414 gfx_dashed_line(im, X0 - 1, Y0,
2418 graph_col[GRC_GRID],
2419 im->grid_dash_on, im->grid_dash_off);
2424 if (yloglab[mid][++flab] == 10.0) {
2430 /* draw minor lines after highest major line */
2431 if (mid < 4 && exfrac == 1) {
2432 /* find first and last minor line below current major line
2433 * i is the first line and j tha last */
2435 min_exp = val_exp - 1;
2436 for (i = 1; yloglab[mid][i] < 10.0; i++);
2437 i = yloglab[mid][i - 1] + 1;
2441 i = yloglab[mid][flab - 1] + 1;
2442 j = yloglab[mid][flab];
2445 /* draw minor lines below current major line */
2446 for (; i < j; i++) {
2448 value = i * pow(10.0, min_exp);
2449 if (value < im->minval)
2451 Y0 = ytr(im, value);
2452 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2456 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2457 gfx_line(im, X1, Y0, X1 + 2, Y0,
2458 GRIDWIDTH, im->graph_col[GRC_GRID]);
2459 gfx_dashed_line(im, X0 - 1, Y0,
2463 graph_col[GRC_GRID],
2464 im->grid_dash_on, im->grid_dash_off);
2467 /* fancy minor gridlines */
2468 else if (exfrac > 1) {
2469 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2470 value = pow(10.0, i);
2471 if (value < im->minval)
2473 Y0 = ytr(im, value);
2474 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2478 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2479 gfx_line(im, X1, Y0, X1 + 2, Y0,
2480 GRIDWIDTH, im->graph_col[GRC_GRID]);
2481 gfx_dashed_line(im, X0 - 1, Y0,
2485 graph_col[GRC_GRID],
2486 im->grid_dash_on, im->grid_dash_off);
2497 int xlab_sel; /* which sort of label and grid ? */
2498 time_t ti, tilab, timajor;
2500 char graph_label[100];
2501 double X0, Y0, Y1; /* points for filled graph and more */
2504 /* the type of time grid is determined by finding
2505 the number of seconds per pixel in the graph */
2506 if (im->xlab_user.minsec == -1) {
2507 factor = (im->end - im->start) / im->xsize;
2509 while (xlab[xlab_sel + 1].minsec !=
2510 -1 && xlab[xlab_sel + 1].minsec <= factor) {
2512 } /* pick the last one */
2513 while (xlab[xlab_sel - 1].minsec ==
2514 xlab[xlab_sel].minsec
2515 && xlab[xlab_sel].length > (im->end - im->start)) {
2517 } /* go back to the smallest size */
2518 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
2519 im->xlab_user.gridst = xlab[xlab_sel].gridst;
2520 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
2521 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
2522 im->xlab_user.labtm = xlab[xlab_sel].labtm;
2523 im->xlab_user.labst = xlab[xlab_sel].labst;
2524 im->xlab_user.precis = xlab[xlab_sel].precis;
2525 im->xlab_user.stst = xlab[xlab_sel].stst;
2528 /* y coords are the same for every line ... */
2530 Y1 = im->yorigin - im->ysize;
2531 /* paint the minor grid */
2532 if (!(im->extra_flags & NOMINOR)) {
2533 for (ti = find_first_time(im->start,
2541 find_first_time(im->start,
2546 ti < im->end && ti != -1;
2548 find_next_time(ti, im->xlab_user.gridtm, im->xlab_user.gridst)
2550 /* are we inside the graph ? */
2551 if (ti < im->start || ti > im->end)
2553 while (timajor < ti && timajor != -1) {
2554 timajor = find_next_time(timajor,
2557 mgridtm, im->xlab_user.mgridst);
2559 if (timajor == -1) break; /* fail in case of problems with time increments */
2561 continue; /* skip as falls on major grid line */
2563 gfx_line(im, X0, Y1 - 2, X0, Y1,
2564 GRIDWIDTH, im->graph_col[GRC_GRID]);
2565 gfx_line(im, X0, Y0, X0, Y0 + 2,
2566 GRIDWIDTH, im->graph_col[GRC_GRID]);
2567 gfx_dashed_line(im, X0, Y0 + 1, X0,
2570 graph_col[GRC_GRID],
2571 im->grid_dash_on, im->grid_dash_off);
2575 /* paint the major grid */
2576 for (ti = find_first_time(im->start,
2583 ti < im->end && ti != -1;
2584 ti = find_next_time(ti, im->xlab_user.mgridtm, im->xlab_user.mgridst)
2586 /* are we inside the graph ? */
2587 if (ti < im->start || ti > im->end)
2590 gfx_line(im, X0, Y1 - 2, X0, Y1,
2591 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2592 gfx_line(im, X0, Y0, X0, Y0 + 3,
2593 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2594 gfx_dashed_line(im, X0, Y0 + 3, X0,
2598 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2600 /* paint the labels below the graph */
2602 find_first_time(im->start -
2611 im->xlab_user.precis / 2) && ti != -1;
2612 ti = find_next_time(ti, im->xlab_user.labtm, im->xlab_user.labst)
2614 tilab = ti + im->xlab_user.precis / 2; /* correct time for the label */
2615 /* are we inside the graph ? */
2616 if (tilab < im->start || tilab > im->end)
2619 localtime_r(&tilab, &tm);
2620 strftime(graph_label, 99, im->xlab_user.stst, &tm);
2622 # error "your libc has no strftime I guess we'll abort the exercise here."
2627 im->graph_col[GRC_FONT],
2629 text_prop[TEXT_PROP_AXIS].
2632 GFX_H_CENTER, GFX_V_TOP, graph_label);
2641 /* draw x and y axis */
2642 /* gfx_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
2643 im->xorigin+im->xsize,im->yorigin-im->ysize,
2644 GRIDWIDTH, im->graph_col[GRC_AXIS]);
2646 gfx_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
2647 im->xorigin+im->xsize,im->yorigin-im->ysize,
2648 GRIDWIDTH, im->graph_col[GRC_AXIS]); */
2650 gfx_line(im, im->xorigin - 4,
2652 im->xorigin + im->xsize +
2653 4, im->yorigin, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2654 gfx_line(im, im->xorigin,
2657 im->yorigin - im->ysize -
2658 4, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2659 /* arrow for X and Y axis direction */
2660 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 */
2661 im->graph_col[GRC_ARROW]);
2663 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 */
2664 im->graph_col[GRC_ARROW]);
2666 if (im->second_axis_scale != 0){
2667 gfx_line ( im, im->xorigin+im->xsize,im->yorigin+4,
2668 im->xorigin+im->xsize,im->yorigin-im->ysize-4,
2669 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2671 im->xorigin+im->xsize-2, im->yorigin-im->ysize-2,
2672 im->xorigin+im->xsize+3, im->yorigin-im->ysize-2,
2673 im->xorigin+im->xsize, im->yorigin-im->ysize-7, /* LINEOFFSET */
2674 im->graph_col[GRC_ARROW]);
2685 double X0, Y0; /* points for filled graph and more */
2686 struct gfx_color_t water_color;
2688 if (im->draw_3d_border > 0) {
2689 /* draw 3d border */
2690 i = im->draw_3d_border;
2691 gfx_new_area(im, 0, im->yimg,
2692 i, im->yimg - i, i, i, im->graph_col[GRC_SHADEA]);
2693 gfx_add_point(im, im->ximg - i, i);
2694 gfx_add_point(im, im->ximg, 0);
2695 gfx_add_point(im, 0, 0);
2697 gfx_new_area(im, i, im->yimg - i,
2699 im->yimg - i, im->ximg - i, i, im->graph_col[GRC_SHADEB]);
2700 gfx_add_point(im, im->ximg, 0);
2701 gfx_add_point(im, im->ximg, im->yimg);
2702 gfx_add_point(im, 0, im->yimg);
2705 if (im->draw_x_grid == 1)
2707 if (im->draw_y_grid == 1) {
2708 if (im->logarithmic) {
2709 res = horizontal_log_grid(im);
2711 res = draw_horizontal_grid(im);
2714 /* dont draw horizontal grid if there is no min and max val */
2716 char *nodata = "No Data found";
2718 gfx_text(im, im->ximg / 2,
2721 im->graph_col[GRC_FONT],
2723 text_prop[TEXT_PROP_AXIS].
2726 GFX_H_CENTER, GFX_V_CENTER, nodata);
2730 /* yaxis unit description */
2731 if (im->ylegend[0] != '\0'){
2733 im->xOriginLegendY+10,
2735 im->graph_col[GRC_FONT],
2737 text_prop[TEXT_PROP_UNIT].
2740 RRDGRAPH_YLEGEND_ANGLE, GFX_H_CENTER, GFX_V_CENTER, im->ylegend);
2743 if (im->second_axis_legend[0] != '\0'){
2745 im->xOriginLegendY2+10,
2746 im->yOriginLegendY2,
2747 im->graph_col[GRC_FONT],
2748 im->text_prop[TEXT_PROP_UNIT].font_desc,
2750 RRDGRAPH_YLEGEND_ANGLE,
2751 GFX_H_CENTER, GFX_V_CENTER,
2752 im->second_axis_legend);
2757 im->xOriginTitle, im->yOriginTitle+6,
2758 im->graph_col[GRC_FONT],
2760 text_prop[TEXT_PROP_TITLE].
2762 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP, im->title);
2763 /* rrdtool 'logo' */
2764 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
2765 water_color = im->graph_col[GRC_FONT];
2766 water_color.alpha = 0.3;
2767 double xpos = im->legendposition == EAST ? im->xOriginLegendY : im->ximg - 4;
2768 gfx_text(im, xpos, 5,
2771 text_prop[TEXT_PROP_WATERMARK].
2772 font_desc, im->tabwidth,
2773 -90, GFX_H_LEFT, GFX_V_TOP, "RRDTOOL / TOBI OETIKER");
2775 /* graph watermark */
2776 if (im->watermark[0] != '\0') {
2777 water_color = im->graph_col[GRC_FONT];
2778 water_color.alpha = 0.3;
2780 im->ximg / 2, im->yimg - 6,
2783 text_prop[TEXT_PROP_WATERMARK].
2784 font_desc, im->tabwidth, 0,
2785 GFX_H_CENTER, GFX_V_BOTTOM, im->watermark);
2789 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
2790 for (i = 0; i < im->gdes_c; i++) {
2791 if (im->gdes[i].legend[0] == '\0')
2793 /* im->gdes[i].leg_y is the bottom of the legend */
2794 X0 = im->xOriginLegend + im->gdes[i].leg_x;
2795 Y0 = im->legenddirection == TOP_DOWN ? im->yOriginLegend + im->gdes[i].leg_y : im->yOriginLegend + im->legendheight - im->gdes[i].leg_y;
2796 gfx_text(im, X0, Y0,
2797 im->graph_col[GRC_FONT],
2800 [TEXT_PROP_LEGEND].font_desc,
2802 GFX_H_LEFT, GFX_V_BOTTOM, im->gdes[i].legend);
2803 /* The legend for GRAPH items starts with "M " to have
2804 enough space for the box */
2805 if (im->gdes[i].gf != GF_PRINT &&
2806 im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT) {
2810 boxH = gfx_get_text_width(im, 0,
2815 im->tabwidth, "o") * 1.2;
2817 /* shift the box up a bit */
2820 if (im->dynamic_labels && im->gdes[i].gf == GF_HRULE) { /* [-] */
2822 cairo_new_path(im->cr);
2823 cairo_set_line_width(im->cr, 1.0);
2826 X0 + boxH, Y0 - boxV / 2,
2827 1.0, im->gdes[i].col);
2829 } else if (im->dynamic_labels && im->gdes[i].gf == GF_VRULE) { /* [|] */
2831 cairo_new_path(im->cr);
2832 cairo_set_line_width(im->cr, 1.0);
2835 X0 + boxH / 2, Y0 - boxV,
2836 1.0, im->gdes[i].col);
2838 } else if (im->dynamic_labels && im->gdes[i].gf == GF_LINE) { /* [/] */
2840 cairo_new_path(im->cr);
2841 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
2844 X0 + boxH, Y0 - boxV,
2845 im->gdes[i].linewidth, im->gdes[i].col);
2848 /* make sure transparent colors show up the same way as in the graph */
2851 X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
2852 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2854 gfx_new_area(im, X0, Y0 - boxV, X0,
2855 Y0, X0 + boxH, Y0, im->gdes[i].col);
2856 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2859 cairo_new_path(im->cr);
2860 cairo_set_line_width(im->cr, 1.0);
2863 gfx_line_fit(im, &X0, &Y0);
2864 gfx_line_fit(im, &X1, &Y1);
2865 cairo_move_to(im->cr, X0, Y0);
2866 cairo_line_to(im->cr, X1, Y0);
2867 cairo_line_to(im->cr, X1, Y1);
2868 cairo_line_to(im->cr, X0, Y1);
2869 cairo_close_path(im->cr);
2870 cairo_set_source_rgba(im->cr,
2871 im->graph_col[GRC_FRAME].red,
2872 im->graph_col[GRC_FRAME].green,
2873 im->graph_col[GRC_FRAME].blue,
2874 im->graph_col[GRC_FRAME].alpha);
2876 if (im->gdes[i].dash) {
2877 /* make box borders in legend dashed if the graph is dashed */
2881 cairo_set_dash(im->cr, dashes, 1, 0.0);
2883 cairo_stroke(im->cr);
2884 cairo_restore(im->cr);
2891 /*****************************************************
2892 * lazy check make sure we rely need to create this graph
2893 *****************************************************/
2900 struct stat imgstat;
2903 return 0; /* no lazy option */
2904 if (strlen(im->graphfile) == 0)
2905 return 0; /* inmemory option */
2906 if (stat(im->graphfile, &imgstat) != 0)
2907 return 0; /* can't stat */
2908 /* one pixel in the existing graph is more then what we would
2910 if (time(NULL) - imgstat.st_mtime > (im->end - im->start) / im->xsize)
2912 if ((fd = fopen(im->graphfile, "rb")) == NULL)
2913 return 0; /* the file does not exist */
2914 switch (im->imgformat) {
2916 size = PngSize(fd, &(im->ximg), &(im->yimg));
2926 int graph_size_location(
2931 /* The actual size of the image to draw is determined from
2932 ** several sources. The size given on the command line is
2933 ** the graph area but we need more as we have to draw labels
2934 ** and other things outside the graph area. If the option
2935 ** --full-size-mode is selected the size defines the total
2936 ** image size and the size available for the graph is
2940 /** +---+-----------------------------------+
2941 ** | y |...............graph title.........|
2942 ** | +---+-------------------------------+
2946 ** | s | x | main graph area |
2951 ** | l | b +-------------------------------+
2952 ** | e | l | x axis labels |
2953 ** +---+---+-------------------------------+
2954 ** |....................legends............|
2955 ** +---------------------------------------+
2957 ** +---------------------------------------+
2960 int Xvertical = 0, Xvertical2 = 0, Ytitle =
2961 0, Xylabel = 0, Xmain = 0, Ymain =
2962 0, Yxlabel = 0, Xspacing = 15, Yspacing = 15, Ywatermark = 4;
2964 // no legends and no the shall be plotted it's easy
2965 if (im->extra_flags & ONLY_GRAPH) {
2967 im->ximg = im->xsize;
2968 im->yimg = im->ysize;
2969 im->yorigin = im->ysize;
2975 if(im->watermark[0] != '\0') {
2976 Ywatermark = im->text_prop[TEXT_PROP_WATERMARK].size * 2;
2979 // calculate the width of the left vertical legend
2980 if (im->ylegend[0] != '\0') {
2981 Xvertical = im->text_prop[TEXT_PROP_UNIT].size * 2;
2984 // calculate the width of the right vertical legend
2985 if (im->second_axis_legend[0] != '\0') {
2986 Xvertical2 = im->text_prop[TEXT_PROP_UNIT].size * 2;
2989 Xvertical2 = Xspacing;
2992 if (im->title[0] != '\0') {
2993 /* The title is placed "inbetween" two text lines so it
2994 ** automatically has some vertical spacing. The horizontal
2995 ** spacing is added here, on each side.
2997 /* if necessary, reduce the font size of the title until it fits the image width */
2998 Ytitle = im->text_prop[TEXT_PROP_TITLE].size * 2.6 + 10;
3001 // we have no title; get a little clearing from the top
3006 if (im->draw_x_grid) {
3007 // calculate the height of the horizontal labelling
3008 Yxlabel = im->text_prop[TEXT_PROP_AXIS].size * 2.5;
3010 if (im->draw_y_grid || im->forceleftspace) {
3011 // calculate the width of the vertical labelling
3013 gfx_get_text_width(im, 0,
3014 im->text_prop[TEXT_PROP_AXIS].font_desc,
3015 im->tabwidth, "0") * im->unitslength;
3019 // add some space to the labelling
3020 Xylabel += Xspacing;
3022 /* If the legend is printed besides the graph the width has to be
3023 ** calculated first. Placing the legend north or south of the
3024 ** graph requires the width calculation first, so the legend is
3025 ** skipped for the moment.
3027 im->legendheight = 0;
3028 im->legendwidth = 0;
3029 if (!(im->extra_flags & NOLEGEND)) {
3030 if(im->legendposition == WEST || im->legendposition == EAST){
3031 if (leg_place(im, 1) == -1){
3037 if (im->extra_flags & FULL_SIZE_MODE) {
3039 /* The actual size of the image to draw has been determined by the user.
3040 ** The graph area is the space remaining after accounting for the legend,
3041 ** the watermark, the axis labels, and the title.
3043 im->ximg = im->xsize;
3044 im->yimg = im->ysize;
3048 /* Now calculate the total size. Insert some spacing where
3049 desired. im->xorigin and im->yorigin need to correspond
3050 with the lower left corner of the main graph area or, if
3051 this one is not set, the imaginary box surrounding the
3053 /* Initial size calculation for the main graph area */
3055 Xmain -= Xylabel;// + Xspacing;
3056 if((im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3057 Xmain -= im->legendwidth;// + Xspacing;
3059 if (im->second_axis_scale != 0){
3062 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3066 Xmain -= Xvertical + Xvertical2;
3068 /* limit the remaining space to 0 */
3074 /* Putting the legend north or south, the height can now be calculated */
3075 if (!(im->extra_flags & NOLEGEND)) {
3076 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3077 im->legendwidth = im->ximg;
3078 if (leg_place(im, 0) == -1){
3084 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3085 Ymain -= Yxlabel + im->legendheight;
3091 /* reserve space for the title *or* some padding above the graph */
3094 /* reserve space for padding below the graph */
3095 if (im->extra_flags & NOLEGEND) {
3096 Ymain -= 0.5*Yspacing;
3099 if (im->watermark[0] != '\0') {
3100 Ymain -= Ywatermark;
3102 /* limit the remaining height to 0 */
3107 } else { /* dimension options -width and -height refer to the dimensions of the main graph area */
3109 /* The actual size of the image to draw is determined from
3110 ** several sources. The size given on the command line is
3111 ** the graph area but we need more as we have to draw labels
3112 ** and other things outside the graph area.
3116 Xmain = im->xsize; // + Xspacing;
3120 im->ximg = Xmain + Xylabel;
3121 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3122 im->ximg += Xspacing;
3125 if( (im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3126 im->ximg += im->legendwidth;// + Xspacing;
3128 if (im->second_axis_scale != 0){
3129 im->ximg += Xylabel;
3132 im->ximg += Xvertical + Xvertical2;
3134 if (!(im->extra_flags & NOLEGEND)) {
3135 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3136 im->legendwidth = im->ximg;
3137 if (leg_place(im, 0) == -1){
3143 im->yimg = Ymain + Yxlabel;
3144 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3145 im->yimg += im->legendheight;
3148 /* reserve space for the title *or* some padding above the graph */
3152 im->yimg += 1.5 * Yspacing;
3154 /* reserve space for padding below the graph */
3155 if (im->extra_flags & NOLEGEND) {
3156 im->yimg += 0.5*Yspacing;
3159 if (im->watermark[0] != '\0') {
3160 im->yimg += Ywatermark;
3165 /* In case of putting the legend in west or east position the first
3166 ** legend calculation might lead to wrong positions if some items
3167 ** are not aligned on the left hand side (e.g. centered) as the
3168 ** legendwidth wight have been increased after the item was placed.
3169 ** In this case the positions have to be recalculated.
3171 if (!(im->extra_flags & NOLEGEND)) {
3172 if(im->legendposition == WEST || im->legendposition == EAST){
3173 if (leg_place(im, 0) == -1){
3179 /* After calculating all dimensions
3180 ** it is now possible to calculate
3183 switch(im->legendposition){
3185 im->xOriginTitle = (im->ximg / 2);
3186 im->yOriginTitle = 0;
3188 im->xOriginLegend = 0;
3189 im->yOriginLegend = Ytitle;
3191 im->xOriginLegendY = 0;
3192 im->yOriginLegendY = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3194 im->xorigin = Xvertical + Xylabel;
3195 im->yorigin = Ytitle + im->legendheight + Ymain;
3197 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3198 if (im->second_axis_scale != 0){
3199 im->xOriginLegendY2 += Xylabel;
3201 im->yOriginLegendY2 = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3206 im->xOriginTitle = im->legendwidth + im->xsize / 2;
3207 im->yOriginTitle = 0;
3209 im->xOriginLegend = 0;
3210 im->yOriginLegend = Ytitle;
3212 im->xOriginLegendY = im->legendwidth;
3213 im->yOriginLegendY = Ytitle + (Ymain / 2);
3215 im->xorigin = im->legendwidth + Xvertical + Xylabel;
3216 im->yorigin = Ytitle + Ymain;
3218 im->xOriginLegendY2 = im->legendwidth + Xvertical + Xylabel + Xmain;
3219 if (im->second_axis_scale != 0){
3220 im->xOriginLegendY2 += Xylabel;
3222 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3227 im->xOriginTitle = im->ximg / 2;
3228 im->yOriginTitle = 0;
3230 im->xOriginLegend = 0;
3231 im->yOriginLegend = Ytitle + Ymain + Yxlabel;
3233 im->xOriginLegendY = 0;
3234 im->yOriginLegendY = Ytitle + (Ymain / 2);
3236 im->xorigin = Xvertical + Xylabel;
3237 im->yorigin = Ytitle + Ymain;
3239 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3240 if (im->second_axis_scale != 0){
3241 im->xOriginLegendY2 += Xylabel;
3243 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3248 im->xOriginTitle = im->xsize / 2;
3249 im->yOriginTitle = 0;
3251 im->xOriginLegend = Xvertical + Xylabel + Xmain + Xvertical2;
3252 if (im->second_axis_scale != 0){
3253 im->xOriginLegend += Xylabel;
3255 im->yOriginLegend = Ytitle;
3257 im->xOriginLegendY = 0;
3258 im->yOriginLegendY = Ytitle + (Ymain / 2);
3260 im->xorigin = Xvertical + Xylabel;
3261 im->yorigin = Ytitle + Ymain;
3263 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3264 if (im->second_axis_scale != 0){
3265 im->xOriginLegendY2 += Xylabel;
3267 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3269 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3270 im->xOriginTitle += Xspacing;
3271 im->xOriginLegend += Xspacing;
3272 im->xOriginLegendY += Xspacing;
3273 im->xorigin += Xspacing;
3274 im->xOriginLegendY2 += Xspacing;
3284 static cairo_status_t cairo_output(
3288 unsigned int length)
3290 image_desc_t *im = (image_desc_t*)closure;
3292 im->rendered_image =
3293 (unsigned char*)realloc(im->rendered_image, im->rendered_image_size + length);
3294 if (im->rendered_image == NULL)
3295 return CAIRO_STATUS_WRITE_ERROR;
3296 memcpy(im->rendered_image + im->rendered_image_size, data, length);
3297 im->rendered_image_size += length;
3298 return CAIRO_STATUS_SUCCESS;
3301 /* draw that picture thing ... */
3305 int lazy = lazy_check(im);
3308 /* imgformat XML or higher dispatch to xport
3309 * output format there is selected via graph_type
3311 if (im->imgformat >= IF_XML) {
3312 return rrd_graph_xport(im);
3315 /* pull the data from the rrd files ... */
3316 if (data_fetch(im) == -1)
3318 /* evaluate VDEF and CDEF operations ... */
3319 if (data_calc(im) == -1)
3321 /* calculate and PRINT and GPRINT definitions. We have to do it at
3322 * this point because it will affect the length of the legends
3323 * if there are no graph elements (i==0) we stop here ...
3324 * if we are lazy, try to quit ...
3326 cnt = print_calc(im);
3330 /* if we want and can be lazy ... quit now */
3334 /* otherwise call graph_paint_timestring */
3335 switch (im->graph_type) {
3337 return graph_paint_timestring(im,lazy,cnt);
3340 return graph_paint_xy(im,lazy,cnt);
3343 /* final return with error*/
3344 rrd_set_error("Graph type %i is not implemented",im->graph_type);
3348 int graph_paint_timestring(
3349 image_desc_t *im, int lazy, int cnt)
3352 double areazero = 0.0;
3353 graph_desc_t *lastgdes = NULL;
3356 /**************************************************************
3357 *** Calculating sizes and locations became a bit confusing ***
3358 *** so I moved this into a separate function. ***
3359 **************************************************************/
3360 if (graph_size_location(im, cnt) == -1)
3363 info.u_cnt = im->xorigin;
3364 grinfo_push(im, sprintf_alloc("graph_left"), RD_I_CNT, info);
3365 info.u_cnt = im->yorigin - im->ysize;
3366 grinfo_push(im, sprintf_alloc("graph_top"), RD_I_CNT, info);
3367 info.u_cnt = im->xsize;
3368 grinfo_push(im, sprintf_alloc("graph_width"), RD_I_CNT, info);
3369 info.u_cnt = im->ysize;
3370 grinfo_push(im, sprintf_alloc("graph_height"), RD_I_CNT, info);
3371 info.u_cnt = im->ximg;
3372 grinfo_push(im, sprintf_alloc("image_width"), RD_I_CNT, info);
3373 info.u_cnt = im->yimg;
3374 grinfo_push(im, sprintf_alloc("image_height"), RD_I_CNT, info);
3375 info.u_cnt = im->start;
3376 grinfo_push(im, sprintf_alloc("graph_start"), RD_I_CNT, info);
3377 info.u_cnt = im->end;
3378 grinfo_push(im, sprintf_alloc("graph_end"), RD_I_CNT, info);
3380 /* if we want and can be lazy ... quit now */
3384 /* get actual drawing data and find min and max values */
3385 if (data_proc(im) == -1)
3387 if (!im->logarithmic) {
3391 /* identify si magnitude Kilo, Mega Giga ? */
3392 if (!im->rigid && !im->logarithmic)
3393 expand_range(im); /* make sure the upper and lower limit are
3396 info.u_val = im->minval;
3397 grinfo_push(im, sprintf_alloc("value_min"), RD_I_VAL, info);
3398 info.u_val = im->maxval;
3399 grinfo_push(im, sprintf_alloc("value_max"), RD_I_VAL, info);
3402 if (!calc_horizontal_grid(im))
3407 apply_gridfit(im); */
3410 if (graph_cairo_setup(im)) { return -1; }
3413 if (im->minval > 0.0)
3414 areazero = im->minval;
3415 if (im->maxval < 0.0)
3416 areazero = im->maxval;
3417 for (i = 0; i < im->gdes_c; i++) {
3418 switch (im->gdes[i].gf) {
3432 for (ii = 0; ii < im->xsize; ii++) {
3433 if (!isnan(im->gdes[i].p_data[ii])
3434 && im->gdes[i].p_data[ii] != 0.0) {
3435 if (im->gdes[i].yrule > 0) {
3442 im->ysize, 1.0, im->gdes[i].col);
3443 } else if (im->gdes[i].yrule < 0) {
3446 im->yorigin - im->ysize - 1.0,
3448 im->yorigin - im->ysize -
3451 im->ysize, 1.0, im->gdes[i].col);
3459 rrd_value_t diffval = im->maxval - im->minval;
3460 rrd_value_t maxlimit = im->maxval + 9 * diffval;
3461 rrd_value_t minlimit = im->minval - 9 * diffval;
3462 for (ii = 0; ii < im->xsize; ii++) {
3463 /* fix data points at oo and -oo */
3464 if (isinf(im->gdes[i].p_data[ii])) {
3465 if (im->gdes[i].p_data[ii] > 0) {
3466 im->gdes[i].p_data[ii] = im->maxval;
3468 im->gdes[i].p_data[ii] = im->minval;
3471 /* some versions of cairo go unstable when trying
3472 to draw way out of the canvas ... lets not even try */
3473 if (im->gdes[i].p_data[ii] > maxlimit) {
3474 im->gdes[i].p_data[ii] = maxlimit;
3476 if (im->gdes[i].p_data[ii] < minlimit) {
3477 im->gdes[i].p_data[ii] = minlimit;
3481 /* *******************************************************
3486 -------|--t-1--t--------------------------------
3488 if we know the value at time t was a then
3489 we draw a square from t-1 to t with the value a.
3491 ********************************************************* */
3492 if (im->gdes[i].col.alpha != 0.0) {
3493 /* GF_LINE and friend */
3494 if (im->gdes[i].gf == GF_LINE) {
3495 double last_y = 0.0;
3499 cairo_new_path(im->cr);
3500 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
3501 if (im->gdes[i].dash) {
3502 cairo_set_dash(im->cr,
3503 im->gdes[i].p_dashes,
3504 im->gdes[i].ndash, im->gdes[i].offset);
3507 for (ii = 1; ii < im->xsize; ii++) {
3508 if (isnan(im->gdes[i].p_data[ii])
3509 || (im->slopemode == 1
3510 && isnan(im->gdes[i].p_data[ii - 1]))) {
3515 last_y = ytr(im, im->gdes[i].p_data[ii]);
3516 if (im->slopemode == 0) {
3517 double x = ii - 1 + im->xorigin;
3520 gfx_line_fit(im, &x, &y);
3521 cairo_move_to(im->cr, x, y);
3522 x = ii + im->xorigin;
3524 gfx_line_fit(im, &x, &y);
3525 cairo_line_to(im->cr, x, y);
3527 double x = ii - 1 + im->xorigin;
3529 ytr(im, im->gdes[i].p_data[ii - 1]);
3530 gfx_line_fit(im, &x, &y);
3531 cairo_move_to(im->cr, x, y);
3532 x = ii + im->xorigin;
3534 gfx_line_fit(im, &x, &y);
3535 cairo_line_to(im->cr, x, y);
3539 double x1 = ii + im->xorigin;
3540 double y1 = ytr(im, im->gdes[i].p_data[ii]);
3542 if (im->slopemode == 0
3543 && !AlmostEqual2sComplement(y1, last_y, 4)) {
3544 double x = ii - 1 + im->xorigin;
3547 gfx_line_fit(im, &x, &y);
3548 cairo_line_to(im->cr, x, y);
3551 gfx_line_fit(im, &x1, &y1);
3552 cairo_line_to(im->cr, x1, y1);
3555 cairo_set_source_rgba(im->cr,
3561 col.blue, im->gdes[i].col.alpha);
3562 cairo_set_line_cap(im->cr, CAIRO_LINE_CAP_ROUND);
3563 cairo_set_line_join(im->cr, CAIRO_LINE_JOIN_ROUND);
3564 cairo_stroke(im->cr);
3565 cairo_restore(im->cr);
3571 (double *) malloc(sizeof(double) * im->xsize * 2);
3573 (double *) malloc(sizeof(double) * im->xsize * 2);
3575 (double *) malloc(sizeof(double) * im->xsize * 2);
3577 (double *) malloc(sizeof(double) * im->xsize * 2);
3580 for (ii = 0; ii <= im->xsize; ii++) {
3583 if (idxI > 0 && (drawem != 0 || ii == im->xsize)) {
3589 AlmostEqual2sComplement(foreY
3593 AlmostEqual2sComplement(foreY
3599 if (im->gdes[i].gf != GF_GRAD) {
3604 foreY[cntI], im->gdes[i].col);
3606 lastx = foreX[cntI];
3607 lasty = foreY[cntI];
3609 while (cntI < idxI) {
3614 AlmostEqual2sComplement(foreY
3618 AlmostEqual2sComplement(foreY
3625 if (im->gdes[i].gf != GF_GRAD) {
3626 gfx_add_point(im, foreX[cntI], foreY[cntI]);
3628 gfx_add_rect_fadey(im,
3630 foreX[cntI], foreY[cntI], lasty,
3633 im->gdes[i].gradheight
3635 lastx = foreX[cntI];
3636 lasty = foreY[cntI];
3639 if (im->gdes[i].gf != GF_GRAD) {
3640 gfx_add_point(im, backX[idxI], backY[idxI]);
3642 gfx_add_rect_fadey(im,
3644 backX[idxI], backY[idxI], lasty,
3647 im->gdes[i].gradheight);
3648 lastx = backX[idxI];
3649 lasty = backY[idxI];
3656 AlmostEqual2sComplement(backY
3660 AlmostEqual2sComplement(backY
3667 if (im->gdes[i].gf != GF_GRAD) {
3668 gfx_add_point(im, backX[idxI], backY[idxI]);
3670 gfx_add_rect_fadey(im,
3672 backX[idxI], backY[idxI], lasty,
3675 im->gdes[i].gradheight);
3676 lastx = backX[idxI];
3677 lasty = backY[idxI];
3682 if (im->gdes[i].gf != GF_GRAD)
3689 if (ii == im->xsize)
3691 if (im->slopemode == 0 && ii == 0) {
3694 if (isnan(im->gdes[i].p_data[ii])) {
3698 ytop = ytr(im, im->gdes[i].p_data[ii]);
3699 if (lastgdes && im->gdes[i].stack) {
3700 ybase = ytr(im, lastgdes->p_data[ii]);
3702 ybase = ytr(im, areazero);
3704 if (ybase == ytop) {
3710 double extra = ytop;
3715 if (im->slopemode == 0) {
3716 backY[++idxI] = ybase - 0.2;
3717 backX[idxI] = ii + im->xorigin - 1;
3718 foreY[idxI] = ytop + 0.2;
3719 foreX[idxI] = ii + im->xorigin - 1;
3721 backY[++idxI] = ybase - 0.2;
3722 backX[idxI] = ii + im->xorigin;
3723 foreY[idxI] = ytop + 0.2;
3724 foreX[idxI] = ii + im->xorigin;
3726 /* close up any remaining area */
3731 } /* else GF_LINE */
3733 /* if color != 0x0 */
3734 /* make sure we do not run into trouble when stacking on NaN */
3735 for (ii = 0; ii < im->xsize; ii++) {
3736 if (isnan(im->gdes[i].p_data[ii])) {
3737 if (lastgdes && (im->gdes[i].stack)) {
3738 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
3740 im->gdes[i].p_data[ii] = areazero;
3744 lastgdes = &(im->gdes[i]);
3746 } /* GF_AREA, GF_LINE, GF_GRAD */
3749 ("STACK should already be turned into LINE or AREA here");
3754 cairo_reset_clip(im->cr);
3756 /* grid_paint also does the text */
3757 if (!(im->extra_flags & ONLY_GRAPH))
3759 if (!(im->extra_flags & ONLY_GRAPH))
3761 /* the RULES are the last thing to paint ... */
3762 for (i = 0; i < im->gdes_c; i++) {
3764 switch (im->gdes[i].gf) {
3766 if (im->gdes[i].yrule >= im->minval
3767 && im->gdes[i].yrule <= im->maxval) {
3769 if (im->gdes[i].dash) {
3770 cairo_set_dash(im->cr,
3771 im->gdes[i].p_dashes,
3772 im->gdes[i].ndash, im->gdes[i].offset);
3774 gfx_line(im, im->xorigin,
3775 ytr(im, im->gdes[i].yrule),
3776 im->xorigin + im->xsize,
3777 ytr(im, im->gdes[i].yrule), 1.0, im->gdes[i].col);
3778 cairo_stroke(im->cr);
3779 cairo_restore(im->cr);
3783 if (im->gdes[i].xrule >= im->start
3784 && im->gdes[i].xrule <= im->end) {
3786 if (im->gdes[i].dash) {
3787 cairo_set_dash(im->cr,
3788 im->gdes[i].p_dashes,
3789 im->gdes[i].ndash, im->gdes[i].offset);
3792 xtr(im, im->gdes[i].xrule),
3793 im->yorigin, xtr(im,
3797 im->yorigin - im->ysize, 1.0, im->gdes[i].col);
3798 cairo_stroke(im->cr);
3799 cairo_restore(im->cr);
3806 /* close the graph via cairo*/
3807 return graph_cairo_finish(im);
3810 int graph_cairo_setup (image_desc_t *im)
3812 /* the actual graph is created by going through the individual
3813 graph elements and then drawing them */
3814 cairo_surface_destroy(im->surface);
3815 switch (im->imgformat) {
3818 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
3819 im->ximg * im->zoom,
3820 im->yimg * im->zoom);
3824 im->surface = strlen(im->graphfile)
3825 ? cairo_pdf_surface_create(im->graphfile, im->ximg * im->zoom,
3826 im->yimg * im->zoom)
3827 : cairo_pdf_surface_create_for_stream
3828 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3832 im->surface = strlen(im->graphfile)
3834 cairo_ps_surface_create(im->graphfile, im->ximg * im->zoom,
3835 im->yimg * im->zoom)
3836 : cairo_ps_surface_create_for_stream
3837 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3841 im->surface = strlen(im->graphfile)
3843 cairo_svg_surface_create(im->
3845 im->ximg * im->zoom, im->yimg * im->zoom)
3846 : cairo_svg_surface_create_for_stream
3847 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3848 cairo_svg_surface_restrict_to_version
3849 (im->surface, CAIRO_SVG_VERSION_1_1);
3860 cairo_destroy(im->cr);
3861 im->cr = cairo_create(im->surface);
3862 cairo_set_antialias(im->cr, im->graph_antialias);
3863 cairo_scale(im->cr, im->zoom, im->zoom);
3864 // pango_cairo_font_map_set_resolution(PANGO_CAIRO_FONT_MAP(font_map), 100);
3865 gfx_new_area(im, 0, 0, 0, im->yimg,
3866 im->ximg, im->yimg, im->graph_col[GRC_BACK]);
3867 gfx_add_point(im, im->ximg, 0);
3869 gfx_new_area(im, im->xorigin,
3872 im->xsize, im->yorigin,
3875 im->yorigin - im->ysize, im->graph_col[GRC_CANVAS]);
3876 gfx_add_point(im, im->xorigin, im->yorigin - im->ysize);
3878 cairo_rectangle(im->cr, im->xorigin, im->yorigin - im->ysize - 1.0,
3879 im->xsize, im->ysize + 2.0);
3884 int graph_cairo_finish (image_desc_t *im)
3887 switch (im->imgformat) {
3890 cairo_status_t status;
3892 status = strlen(im->graphfile) ?
3893 cairo_surface_write_to_png(im->surface, im->graphfile)
3894 : cairo_surface_write_to_png_stream(im->surface, &cairo_output,
3897 if (status != CAIRO_STATUS_SUCCESS) {
3898 rrd_set_error("Could not save png to '%s'", im->graphfile);
3912 if (strlen(im->graphfile)) {
3913 cairo_show_page(im->cr);
3915 cairo_surface_finish(im->surface);
3924 image_desc_t *im, int lazy, int cnt)
3926 /* to stop compiler warnings for now */
3927 lazy=cnt=(int)im->gdes_c;
3928 rrd_set_error("XY diagramm not implemented");
3932 /*****************************************************
3934 *****************************************************/
3941 if ((im->gdes = (graph_desc_t *)
3942 rrd_realloc(im->gdes, (im->gdes_c)
3943 * sizeof(graph_desc_t))) == NULL) {
3944 rrd_set_error("realloc graph_descs");
3949 im->gdes[im->gdes_c - 1].step = im->step;
3950 im->gdes[im->gdes_c - 1].step_orig = im->step;
3951 im->gdes[im->gdes_c - 1].stack = 0;
3952 im->gdes[im->gdes_c - 1].linewidth = 0;
3953 im->gdes[im->gdes_c - 1].debug = 0;
3954 im->gdes[im->gdes_c - 1].start = im->start;
3955 im->gdes[im->gdes_c - 1].start_orig = im->start;
3956 im->gdes[im->gdes_c - 1].end = im->end;
3957 im->gdes[im->gdes_c - 1].end_orig = im->end;
3958 im->gdes[im->gdes_c - 1].vname[0] = '\0';
3959 im->gdes[im->gdes_c - 1].data = NULL;
3960 im->gdes[im->gdes_c - 1].ds_namv = NULL;
3961 im->gdes[im->gdes_c - 1].data_first = 0;
3962 im->gdes[im->gdes_c - 1].p_data = NULL;
3963 im->gdes[im->gdes_c - 1].rpnp = NULL;
3964 im->gdes[im->gdes_c - 1].p_dashes = NULL;
3965 im->gdes[im->gdes_c - 1].shift = 0.0;
3966 im->gdes[im->gdes_c - 1].dash = 0;
3967 im->gdes[im->gdes_c - 1].ndash = 0;
3968 im->gdes[im->gdes_c - 1].offset = 0;
3969 im->gdes[im->gdes_c - 1].col.red = 0.0;
3970 im->gdes[im->gdes_c - 1].col.green = 0.0;
3971 im->gdes[im->gdes_c - 1].col.blue = 0.0;
3972 im->gdes[im->gdes_c - 1].col.alpha = 0.0;
3973 im->gdes[im->gdes_c - 1].col2.red = 0.0;
3974 im->gdes[im->gdes_c - 1].col2.green = 0.0;
3975 im->gdes[im->gdes_c - 1].col2.blue = 0.0;
3976 im->gdes[im->gdes_c - 1].col2.alpha = 0.0;
3977 im->gdes[im->gdes_c - 1].gradheight = 50.0;
3978 im->gdes[im->gdes_c - 1].legend[0] = '\0';
3979 im->gdes[im->gdes_c - 1].format[0] = '\0';
3980 im->gdes[im->gdes_c - 1].strftm = 0;
3981 im->gdes[im->gdes_c - 1].rrd[0] = '\0';
3982 im->gdes[im->gdes_c - 1].ds = -1;
3983 im->gdes[im->gdes_c - 1].cf_reduce = CF_AVERAGE;
3984 im->gdes[im->gdes_c - 1].cf = CF_AVERAGE;
3985 im->gdes[im->gdes_c - 1].yrule = DNAN;
3986 im->gdes[im->gdes_c - 1].xrule = 0;
3987 im->gdes[im->gdes_c - 1].daemon[0] = 0;
3991 /* copies input untill the first unescaped colon is found
3992 or until input ends. backslashes have to be escaped as well */
3994 const char *const input,
4000 for (inp = 0; inp < len && input[inp] != ':' && input[inp] != '\0'; inp++) {
4001 if (input[inp] == '\\'
4002 && input[inp + 1] != '\0'
4003 && (input[inp + 1] == '\\' || input[inp + 1] == ':')) {
4004 output[outp++] = input[++inp];
4006 output[outp++] = input[inp];
4009 output[outp] = '\0';
4013 /* Now just a wrapper around rrd_graph_v */
4025 rrd_info_t *grinfo = NULL;
4028 grinfo = rrd_graph_v(argc, argv);
4034 if (strcmp(walker->key, "image_info") == 0) {
4037 (char**)rrd_realloc((*prdata),
4038 (prlines + 1) * sizeof(char *))) == NULL) {
4039 rrd_set_error("realloc prdata");
4042 /* imginfo goes to position 0 in the prdata array */
4043 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
4044 + 2) * sizeof(char));
4045 strcpy((*prdata)[prlines - 1], walker->value.u_str);
4046 (*prdata)[prlines] = NULL;
4048 /* skip anything else */
4049 walker = walker->next;
4057 if (strcmp(walker->key, "image_width") == 0) {
4058 *xsize = walker->value.u_cnt;
4059 } else if (strcmp(walker->key, "image_height") == 0) {
4060 *ysize = walker->value.u_cnt;
4061 } else if (strcmp(walker->key, "value_min") == 0) {
4062 *ymin = walker->value.u_val;
4063 } else if (strcmp(walker->key, "value_max") == 0) {
4064 *ymax = walker->value.u_val;
4065 } else if (strncmp(walker->key, "print", 5) == 0) { /* keys are prdate[0..] */
4068 (char**)rrd_realloc((*prdata),
4069 (prlines + 1) * sizeof(char *))) == NULL) {
4070 rrd_set_error("realloc prdata");
4073 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
4074 + 2) * sizeof(char));
4075 (*prdata)[prlines] = NULL;
4076 strcpy((*prdata)[prlines - 1], walker->value.u_str);
4077 } else if (strcmp(walker->key, "image") == 0) {
4078 if ( fwrite(walker->value.u_blo.ptr, walker->value.u_blo.size, 1,
4079 (stream ? stream : stdout)) == 0 && ferror(stream ? stream : stdout)){
4080 rrd_set_error("writing image");
4084 /* skip anything else */
4085 walker = walker->next;
4087 rrd_info_free(grinfo);
4092 /* Some surgery done on this function, it became ridiculously big.
4094 ** - initializing now in rrd_graph_init()
4095 ** - options parsing now in rrd_graph_options()
4096 ** - script parsing now in rrd_graph_script()
4099 rrd_info_t *rrd_graph_v(
4106 rrd_graph_init(&im);
4107 /* a dummy surface so that we can measure text sizes for placements */
4108 old_locale = setlocale(LC_NUMERIC, NULL);
4109 setlocale(LC_NUMERIC, "C");
4110 rrd_graph_options(argc, argv, &im);
4111 if (rrd_test_error()) {
4112 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4113 rrd_info_free(im.grinfo);
4118 if (optind >= argc) {
4119 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4120 rrd_info_free(im.grinfo);
4122 rrd_set_error("missing filename");
4126 if (strlen(argv[optind]) >= MAXPATH) {
4127 setlocale(LC_NUMERIC, old_locale); /* reenable locale */
4128 rrd_set_error("filename (including path) too long");
4129 rrd_info_free(im.grinfo);
4134 strncpy(im.graphfile, argv[optind], MAXPATH - 1);
4135 im.graphfile[MAXPATH - 1] = '\0';
4137 if (strcmp(im.graphfile, "-") == 0) {
4138 im.graphfile[0] = '\0';
4141 rrd_graph_script(argc, argv, &im, 1);
4142 setlocale(LC_NUMERIC, old_locale); /* reenable locale for rendering the graph */
4144 if (rrd_test_error()) {
4145 rrd_info_free(im.grinfo);
4150 /* Everything is now read and the actual work can start */
4151 if (graph_paint(&im) == -1) {
4152 rrd_info_free(im.grinfo);
4157 /* The image is generated and needs to be output.
4158 ** Also, if needed, print a line with information about the image.
4166 path = strdup(im.graphfile);
4167 filename = basename(path);
4169 sprintf_alloc(im.imginfo,
4172 im.ximg), (long) (im.zoom * im.yimg));
4173 grinfo_push(&im, sprintf_alloc("image_info"), RD_I_STR, info);
4177 if (im.rendered_image) {
4180 img.u_blo.size = im.rendered_image_size;
4181 img.u_blo.ptr = im.rendered_image;
4182 grinfo_push(&im, sprintf_alloc("image"), RD_I_BLO, img);
4191 image_desc_t *im,int prop,char *font, double size ){
4193 strncpy(im->text_prop[prop].font, font, sizeof(text_prop[prop].font) - 1);
4194 im->text_prop[prop].font[sizeof(text_prop[prop].font) - 1] = '\0';
4195 /* if we already got one, drop it first */
4196 pango_font_description_free(im->text_prop[prop].font_desc);
4197 im->text_prop[prop].font_desc = pango_font_description_from_string( font );
4200 im->text_prop[prop].size = size;
4202 if (im->text_prop[prop].font_desc && im->text_prop[prop].size ){
4203 pango_font_description_set_size(im->text_prop[prop].font_desc, im->text_prop[prop].size * PANGO_SCALE);
4207 void rrd_graph_init(
4212 char *deffont = getenv("RRD_DEFAULT_FONT");
4213 static PangoFontMap *fontmap = NULL;
4214 PangoContext *context;
4216 /* zero the whole structure first */
4217 memset(im,0,sizeof(image_desc_t));
4222 im->graph_type = GTYPE_TIME;
4224 im->daemon_addr = NULL;
4225 im->draw_x_grid = 1;
4226 im->draw_y_grid = 1;
4227 im->draw_3d_border = 2;
4228 im->dynamic_labels = 0;
4229 im->extra_flags = 0;
4230 im->font_options = cairo_font_options_create();
4231 im->forceleftspace = 0;
4234 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4235 im->grid_dash_off = 1;
4236 im->grid_dash_on = 1;
4238 im->grinfo = (rrd_info_t *) NULL;
4239 im->grinfo_current = (rrd_info_t *) NULL;
4240 im->imgformat = IF_PNG;
4243 im->legenddirection = TOP_DOWN;
4244 im->legendheight = 0;
4245 im->legendposition = SOUTH;
4246 im->legendwidth = 0;
4247 im->logarithmic = 0;
4254 im->rendered_image_size = 0;
4255 im->rendered_image = NULL;
4259 im->tabwidth = 40.0;
4260 im->title[0] = '\0';
4261 im->unitsexponent = 9999;
4262 im->unitslength = 6;
4263 im->viewfactor = 1.0;
4264 im->watermark[0] = '\0';
4265 im->with_markup = 0;
4267 im->xlab_user.minsec = -1;
4269 im->xOriginLegend = 0;
4270 im->xOriginLegendY = 0;
4271 im->xOriginLegendY2 = 0;
4272 im->xOriginTitle = 0;
4274 im->ygridstep = DNAN;
4276 im->ylegend[0] = '\0';
4277 im->second_axis_scale = 0; /* 0 disables it */
4278 im->second_axis_shift = 0; /* no shift by default */
4279 im->second_axis_legend[0] = '\0';
4280 im->second_axis_format[0] = '\0';
4282 im->yOriginLegend = 0;
4283 im->yOriginLegendY = 0;
4284 im->yOriginLegendY2 = 0;
4285 im->yOriginTitle = 0;
4289 im->surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 10, 10);
4290 im->cr = cairo_create(im->surface);
4292 for (i = 0; i < DIM(text_prop); i++) {
4293 im->text_prop[i].size = -1;
4294 im->text_prop[i].font_desc = NULL;
4295 rrd_set_font_desc(im,i, deffont ? deffont : text_prop[i].font,text_prop[i].size);
4298 if (fontmap == NULL){
4299 fontmap = pango_cairo_font_map_get_default();
4302 context = pango_cairo_font_map_create_context((PangoCairoFontMap*)fontmap);
4304 pango_cairo_context_set_resolution(context, 100);
4306 pango_cairo_update_context(im->cr,context);
4308 im->layout = pango_layout_new(context);
4309 g_object_unref (context);
4311 // im->layout = pango_cairo_create_layout(im->cr);
4314 cairo_font_options_set_hint_style
4315 (im->font_options, CAIRO_HINT_STYLE_FULL);
4316 cairo_font_options_set_hint_metrics
4317 (im->font_options, CAIRO_HINT_METRICS_ON);
4318 cairo_font_options_set_antialias(im->font_options, CAIRO_ANTIALIAS_GRAY);
4322 for (i = 0; i < DIM(graph_col); i++)
4323 im->graph_col[i] = graph_col[i];
4329 void rrd_graph_options(
4336 char *parsetime_error = NULL;
4337 char scan_gtm[12], scan_mtm[12], scan_ltm[12], col_nam[12];
4338 time_t start_tmp = 0, end_tmp = 0;
4340 rrd_time_value_t start_tv, end_tv;
4341 long unsigned int color;
4343 /* defines for long options without a short equivalent. should be bytes,
4344 and may not collide with (the ASCII value of) short options */
4345 #define LONGOPT_UNITS_SI 255
4348 struct option long_options[] = {
4349 { "alt-autoscale", no_argument, 0, 'A'},
4350 { "imgformat", required_argument, 0, 'a'},
4351 { "font-smoothing-threshold", required_argument, 0, 'B'},
4352 { "base", required_argument, 0, 'b'},
4353 { "color", required_argument, 0, 'c'},
4354 { "full-size-mode", no_argument, 0, 'D'},
4355 { "daemon", required_argument, 0, 'd'},
4356 { "slope-mode", no_argument, 0, 'E'},
4357 { "end", required_argument, 0, 'e'},
4358 { "force-rules-legend", no_argument, 0, 'F'},
4359 { "imginfo", required_argument, 0, 'f'},
4360 { "graph-render-mode", required_argument, 0, 'G'},
4361 { "no-legend", no_argument, 0, 'g'},
4362 { "height", required_argument, 0, 'h'},
4363 { "no-minor", no_argument, 0, 'I'},
4364 { "interlaced", no_argument, 0, 'i'},
4365 { "alt-autoscale-min", no_argument, 0, 'J'},
4366 { "only-graph", no_argument, 0, 'j'},
4367 { "units-length", required_argument, 0, 'L'},
4368 { "lower-limit", required_argument, 0, 'l'},
4369 { "alt-autoscale-max", no_argument, 0, 'M'},
4370 { "zoom", required_argument, 0, 'm'},
4371 { "no-gridfit", no_argument, 0, 'N'},
4372 { "font", required_argument, 0, 'n'},
4373 { "logarithmic", no_argument, 0, 'o'},
4374 { "pango-markup", no_argument, 0, 'P'},
4375 { "font-render-mode", required_argument, 0, 'R'},
4376 { "rigid", no_argument, 0, 'r'},
4377 { "step", required_argument, 0, 'S'},
4378 { "start", required_argument, 0, 's'},
4379 { "tabwidth", required_argument, 0, 'T'},
4380 { "title", required_argument, 0, 't'},
4381 { "upper-limit", required_argument, 0, 'u'},
4382 { "vertical-label", required_argument, 0, 'v'},
4383 { "watermark", required_argument, 0, 'W'},
4384 { "width", required_argument, 0, 'w'},
4385 { "units-exponent", required_argument, 0, 'X'},
4386 { "x-grid", required_argument, 0, 'x'},
4387 { "alt-y-grid", no_argument, 0, 'Y'},
4388 { "y-grid", required_argument, 0, 'y'},
4389 { "lazy", no_argument, 0, 'z'},
4390 { "units", required_argument, 0, LONGOPT_UNITS_SI},
4391 { "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 */
4392 { "disable-rrdtool-tag",no_argument, 0, 1001},
4393 { "right-axis", required_argument, 0, 1002},
4394 { "right-axis-label", required_argument, 0, 1003},
4395 { "right-axis-format", required_argument, 0, 1004},
4396 { "legend-position", required_argument, 0, 1005},
4397 { "legend-direction", required_argument, 0, 1006},
4398 { "border", required_argument, 0, 1007},
4399 { "grid-dash", required_argument, 0, 1008},
4400 { "dynamic-labels", no_argument, 0, 1009},
4401 { "week-fmt", required_argument, 0, 1010},
4402 { "graph-type", required_argument, 0, 1011},
4408 opterr = 0; /* initialize getopt */
4409 rrd_parsetime("end-24h", &start_tv);
4410 rrd_parsetime("now", &end_tv);
4412 int option_index = 0;
4414 int col_start, col_end;
4416 opt = getopt_long(argc, argv,
4417 "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",
4418 long_options, &option_index);
4423 im->extra_flags |= NOMINOR;
4426 im->extra_flags |= ALTYGRID;
4429 im->extra_flags |= ALTAUTOSCALE;
4432 im->extra_flags |= ALTAUTOSCALE_MIN;
4435 im->extra_flags |= ALTAUTOSCALE_MAX;
4438 im->extra_flags |= ONLY_GRAPH;
4441 im->extra_flags |= NOLEGEND;
4444 if (strcmp(optarg, "north") == 0) {
4445 im->legendposition = NORTH;
4446 } else if (strcmp(optarg, "west") == 0) {
4447 im->legendposition = WEST;
4448 } else if (strcmp(optarg, "south") == 0) {
4449 im->legendposition = SOUTH;
4450 } else if (strcmp(optarg, "east") == 0) {
4451 im->legendposition = EAST;
4453 rrd_set_error("unknown legend-position '%s'", optarg);
4458 if (strcmp(optarg, "topdown") == 0) {
4459 im->legenddirection = TOP_DOWN;
4460 } else if (strcmp(optarg, "bottomup") == 0) {
4461 im->legenddirection = BOTTOM_UP;
4463 rrd_set_error("unknown legend-position '%s'", optarg);
4468 im->extra_flags |= FORCE_RULES_LEGEND;
4471 im->extra_flags |= NO_RRDTOOL_TAG;
4473 case LONGOPT_UNITS_SI:
4474 if (im->extra_flags & FORCE_UNITS) {
4475 rrd_set_error("--units can only be used once!");
4478 if (strcmp(optarg, "si") == 0)
4479 im->extra_flags |= FORCE_UNITS_SI;
4481 rrd_set_error("invalid argument for --units: %s", optarg);
4486 im->unitsexponent = atoi(optarg);
4489 im->unitslength = atoi(optarg);
4490 im->forceleftspace = 1;
4493 im->tabwidth = atof(optarg);
4496 im->step = atoi(optarg);
4502 im->with_markup = 1;
4505 if ((parsetime_error = rrd_parsetime(optarg, &start_tv))) {
4506 rrd_set_error("start time: %s", parsetime_error);
4511 if ((parsetime_error = rrd_parsetime(optarg, &end_tv))) {
4512 rrd_set_error("end time: %s", parsetime_error);
4517 if (strcmp(optarg, "none") == 0) {
4518 im->draw_x_grid = 0;
4522 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
4524 &im->xlab_user.gridst,
4526 &im->xlab_user.mgridst,
4528 &im->xlab_user.labst,
4529 &im->xlab_user.precis, &stroff) == 7 && stroff != 0) {
4530 strncpy(im->xlab_form, optarg + stroff,
4531 sizeof(im->xlab_form) - 1);
4532 im->xlab_form[sizeof(im->xlab_form) - 1] = '\0';
4534 (im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1) {
4535 rrd_set_error("unknown keyword %s", scan_gtm);
4538 (im->xlab_user.mgridtm = tmt_conv(scan_mtm))
4540 rrd_set_error("unknown keyword %s", scan_mtm);
4543 (im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1) {
4544 rrd_set_error("unknown keyword %s", scan_ltm);
4547 im->xlab_user.minsec = 1;
4548 im->xlab_user.stst = im->xlab_form;
4550 rrd_set_error("invalid x-grid format");
4556 if (strcmp(optarg, "none") == 0) {
4557 im->draw_y_grid = 0;
4560 if (sscanf(optarg, "%lf:%d", &im->ygridstep, &im->ylabfact) == 2) {
4561 if (im->ygridstep <= 0) {
4562 rrd_set_error("grid step must be > 0");
4564 } else if (im->ylabfact < 1) {
4565 rrd_set_error("label factor must be > 0");
4569 rrd_set_error("invalid y-grid format");
4574 im->draw_3d_border = atoi(optarg);
4576 case 1008: /* grid-dash */
4580 &im->grid_dash_off) != 2) {
4581 rrd_set_error("expected grid-dash format float:float");
4585 case 1009: /* enable dynamic labels */
4586 im->dynamic_labels = 1;
4589 strncpy(week_fmt,optarg,sizeof week_fmt);
4590 week_fmt[(sizeof week_fmt)-1]='\0';
4592 case 1002: /* right y axis */
4596 &im->second_axis_scale,
4597 &im->second_axis_shift) == 2) {
4598 if(im->second_axis_scale==0){
4599 rrd_set_error("the second_axis_scale must not be 0");
4603 rrd_set_error("invalid right-axis format expected scale:shift");
4608 strncpy(im->second_axis_legend,optarg,150);
4609 im->second_axis_legend[150]='\0';
4612 if (bad_format(optarg)){
4613 rrd_set_error("use either %le or %lf formats");
4616 strncpy(im->second_axis_format,optarg,150);
4617 im->second_axis_format[150]='\0';
4620 strncpy(im->ylegend, optarg, 150);
4621 im->ylegend[150] = '\0';
4624 im->maxval = atof(optarg);
4627 im->minval = atof(optarg);
4630 im->base = atol(optarg);
4631 if (im->base != 1024 && im->base != 1000) {
4633 ("the only sensible value for base apart from 1000 is 1024");
4638 long_tmp = atol(optarg);
4639 if (long_tmp < 10) {
4640 rrd_set_error("width below 10 pixels");
4643 im->xsize = long_tmp;
4646 long_tmp = atol(optarg);
4647 if (long_tmp < 10) {
4648 rrd_set_error("height below 10 pixels");
4651 im->ysize = long_tmp;
4654 im->extra_flags |= FULL_SIZE_MODE;
4657 /* interlaced png not supported at the moment */
4663 im->imginfo = optarg;
4667 (im->imgformat = if_conv(optarg)) == -1) {
4668 rrd_set_error("unsupported graphics format '%s'", optarg);
4674 (im->graph_type = type_conv(optarg)) == -1) {
4675 rrd_set_error("unsupported graphics type '%s'", optarg);
4686 im->logarithmic = 1;
4690 "%10[A-Z]#%n%8lx%n",
4691 col_nam, &col_start, &color, &col_end) == 2) {
4693 int col_len = col_end - col_start;
4698 (((color & 0xF00) * 0x110000) | ((color & 0x0F0) *
4706 (((color & 0xF000) *
4707 0x11000) | ((color & 0x0F00) *
4708 0x01100) | ((color &
4711 ((color & 0x000F) * 0x00011)
4715 color = (color << 8) + 0xff /* shift left by 8 */ ;
4720 rrd_set_error("the color format is #RRGGBB[AA]");
4723 if ((ci = grc_conv(col_nam)) != -1) {
4724 im->graph_col[ci] = gfx_hex_to_col(color);
4726 rrd_set_error("invalid color name '%s'", col_nam);
4730 rrd_set_error("invalid color def format");
4739 if (sscanf(optarg, "%10[A-Z]:%lf%n", prop, &size, &end) >= 2) {
4740 int sindex, propidx;
4742 if ((sindex = text_prop_conv(prop)) != -1) {
4743 for (propidx = sindex;
4744 propidx < TEXT_PROP_LAST; propidx++) {
4746 rrd_set_font_desc(im,propidx,NULL,size);
4748 if ((int) strlen(optarg) > end+2) {
4749 if (optarg[end] == ':') {
4750 rrd_set_font_desc(im,propidx,optarg + end + 1,0);
4753 ("expected : after font size in '%s'",
4758 /* only run the for loop for DEFAULT (0) for
4759 all others, we break here. woodo programming */
4760 if (propidx == sindex && sindex != 0)
4764 rrd_set_error("invalid fonttag '%s'", prop);
4768 rrd_set_error("invalid text property format");
4774 im->zoom = atof(optarg);
4775 if (im->zoom <= 0.0) {
4776 rrd_set_error("zoom factor must be > 0");
4781 strncpy(im->title, optarg, 150);
4782 im->title[150] = '\0';
4785 if (strcmp(optarg, "normal") == 0) {
4786 cairo_font_options_set_antialias
4787 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4788 cairo_font_options_set_hint_style
4789 (im->font_options, CAIRO_HINT_STYLE_FULL);
4790 } else if (strcmp(optarg, "light") == 0) {
4791 cairo_font_options_set_antialias
4792 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4793 cairo_font_options_set_hint_style
4794 (im->font_options, CAIRO_HINT_STYLE_SLIGHT);
4795 } else if (strcmp(optarg, "mono") == 0) {
4796 cairo_font_options_set_antialias
4797 (im->font_options, CAIRO_ANTIALIAS_NONE);
4798 cairo_font_options_set_hint_style
4799 (im->font_options, CAIRO_HINT_STYLE_FULL);
4801 rrd_set_error("unknown font-render-mode '%s'", optarg);
4806 if (strcmp(optarg, "normal") == 0)
4807 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4808 else if (strcmp(optarg, "mono") == 0)
4809 im->graph_antialias = CAIRO_ANTIALIAS_NONE;
4811 rrd_set_error("unknown graph-render-mode '%s'", optarg);
4816 /* not supported curently */
4819 strncpy(im->watermark, optarg, 100);
4820 im->watermark[99] = '\0';
4824 if (im->daemon_addr != NULL)
4826 rrd_set_error ("You cannot specify --daemon "
4831 im->daemon_addr = strdup(optarg);
4832 if (im->daemon_addr == NULL)
4834 rrd_set_error("strdup failed");
4842 rrd_set_error("unknown option '%c'", optopt);
4844 rrd_set_error("unknown option '%s'", argv[optind - 1]);
4849 pango_cairo_context_set_font_options(pango_layout_get_context(im->layout), im->font_options);
4850 pango_layout_context_changed(im->layout);
4854 if (im->logarithmic && im->minval <= 0) {
4856 ("for a logarithmic yaxis you must specify a lower-limit > 0");
4860 if (rrd_proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
4861 /* error string is set in rrd_parsetime.c */
4865 if (start_tmp < 3600 * 24 * 365 * 10) {
4867 ("the first entry to fetch should be after 1980 (%ld)",
4872 if (end_tmp < start_tmp) {
4874 ("start (%ld) should be less than end (%ld)", start_tmp, end_tmp);
4878 im->start = start_tmp;
4880 im->step = max((long) im->step, (im->end - im->start) / im->xsize);
4883 int rrd_graph_color(
4891 graph_desc_t *gdp = &im->gdes[im->gdes_c - 1];
4893 color = strstr(var, "#");
4894 if (color == NULL) {
4895 if (optional == 0) {
4896 rrd_set_error("Found no color in %s", err);
4903 long unsigned int col;
4905 rest = strstr(color, ":");
4912 sscanf(color, "#%6lx%n", &col, &n);
4913 col = (col << 8) + 0xff /* shift left by 8 */ ;
4915 rrd_set_error("Color problem in %s", err);
4918 sscanf(color, "#%8lx%n", &col, &n);
4922 rrd_set_error("Color problem in %s", err);
4924 if (rrd_test_error())
4926 gdp->col = gfx_hex_to_col(col);
4939 while (*ptr != '\0')
4940 if (*ptr++ == '%') {
4942 /* line cannot end with percent char */
4945 /* '%s', '%S' and '%%' are allowed */
4946 if (*ptr == 's' || *ptr == 'S' || *ptr == '%')
4948 /* %c is allowed (but use only with vdef!) */
4949 else if (*ptr == 'c') {
4954 /* or else '% 6.2lf' and such are allowed */
4956 /* optional padding character */
4957 if (*ptr == ' ' || *ptr == '+' || *ptr == '-')
4959 /* This should take care of 'm.n' with all three optional */
4960 while (*ptr >= '0' && *ptr <= '9')
4964 while (*ptr >= '0' && *ptr <= '9')
4966 /* Either 'le', 'lf' or 'lg' must follow here */
4969 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g')
4984 const char *const str)
4986 /* A VDEF currently is either "func" or "param,func"
4987 * so the parsing is rather simple. Change if needed.
4994 sscanf(str, "%le,%29[A-Z]%n", ¶m, func, &n);
4995 if (n == (int) strlen(str)) { /* matched */
4999 sscanf(str, "%29[A-Z]%n", func, &n);
5000 if (n == (int) strlen(str)) { /* matched */
5004 ("Unknown function string '%s' in VDEF '%s'",
5009 if (!strcmp("PERCENT", func))
5010 gdes->vf.op = VDEF_PERCENT;
5011 else if (!strcmp("PERCENTNAN", func))
5012 gdes->vf.op = VDEF_PERCENTNAN;
5013 else if (!strcmp("MAXIMUM", func))
5014 gdes->vf.op = VDEF_MAXIMUM;
5015 else if (!strcmp("AVERAGE", func))
5016 gdes->vf.op = VDEF_AVERAGE;
5017 else if (!strcmp("STDEV", func))
5018 gdes->vf.op = VDEF_STDEV;
5019 else if (!strcmp("MINIMUM", func))
5020 gdes->vf.op = VDEF_MINIMUM;
5021 else if (!strcmp("TOTAL", func))
5022 gdes->vf.op = VDEF_TOTAL;
5023 else if (!strcmp("FIRST", func))
5024 gdes->vf.op = VDEF_FIRST;
5025 else if (!strcmp("LAST", func))
5026 gdes->vf.op = VDEF_LAST;
5027 else if (!strcmp("LSLSLOPE", func))
5028 gdes->vf.op = VDEF_LSLSLOPE;
5029 else if (!strcmp("LSLINT", func))
5030 gdes->vf.op = VDEF_LSLINT;
5031 else if (!strcmp("LSLCORREL", func))
5032 gdes->vf.op = VDEF_LSLCORREL;
5035 ("Unknown function '%s' in VDEF '%s'\n", func, gdes->vname);
5038 switch (gdes->vf.op) {
5040 case VDEF_PERCENTNAN:
5041 if (isnan(param)) { /* no parameter given */
5043 ("Function '%s' needs parameter in VDEF '%s'\n",
5047 if (param >= 0.0 && param <= 100.0) {
5048 gdes->vf.param = param;
5049 gdes->vf.val = DNAN; /* undefined */
5050 gdes->vf.when = 0; /* undefined */
5054 ("Parameter '%f' out of range in VDEF '%s'\n",
5055 param, gdes->vname);
5068 case VDEF_LSLCORREL:
5070 gdes->vf.param = DNAN;
5071 gdes->vf.val = DNAN;
5076 ("Function '%s' needs no parameter in VDEF '%s'\n",
5090 graph_desc_t *src, *dst;
5094 dst = &im->gdes[gdi];
5095 src = &im->gdes[dst->vidx];
5096 data = src->data + src->ds;
5098 steps = (src->end - src->start) / src->step;
5101 ("DEBUG: start == %lu, end == %lu, %lu steps\n",
5102 src->start, src->end, steps);
5104 switch (dst->vf.op) {
5108 if ((array = (rrd_value_t*)malloc(steps * sizeof(double))) == NULL) {
5109 rrd_set_error("malloc VDEV_PERCENT");
5112 for (step = 0; step < steps; step++) {
5113 array[step] = data[step * src->ds_cnt];
5115 qsort(array, step, sizeof(double), vdef_percent_compar);
5116 field = round((dst->vf.param * (double)(steps - 1)) / 100.0);
5117 dst->vf.val = array[field];
5118 dst->vf.when = 0; /* no time component */
5122 for (step = 0; step < steps; step++)
5123 printf("DEBUG: %3li:%10.2f %c\n",
5124 step, array[step], step == field ? '*' : ' ');
5128 case VDEF_PERCENTNAN:{
5131 /* count number of "valid" values */
5133 for (step = 0; step < steps; step++) {
5134 if (!isnan(data[step * src->ds_cnt])) { nancount++; }
5136 /* and allocate it */
5137 if ((array = (rrd_value_t*)malloc(nancount * sizeof(double))) == NULL) {
5138 rrd_set_error("malloc VDEV_PERCENT");
5141 /* and fill it in */
5143 for (step = 0; step < steps; step++) {
5144 if (!isnan(data[step * src->ds_cnt])) {
5145 array[field] = data[step * src->ds_cnt];
5149 qsort(array, nancount, sizeof(double), vdef_percent_compar);
5150 field = round( dst->vf.param * (double)(nancount - 1) / 100.0);
5151 dst->vf.val = array[field];
5152 dst->vf.when = 0; /* no time component */
5159 while (step != steps && isnan(data[step * src->ds_cnt]))
5161 if (step == steps) {
5166 dst->vf.val = data[step * src->ds_cnt];
5167 dst->vf.when = src->start + (step + 1) * src->step;
5170 while (step != steps) {
5171 if (finite(data[step * src->ds_cnt])) {
5172 if (data[step * src->ds_cnt] > dst->vf.val) {
5173 dst->vf.val = data[step * src->ds_cnt];
5174 dst->vf.when = src->start + (step + 1) * src->step;
5186 double average = 0.0;
5188 for (step = 0; step < steps; step++) {
5189 if (finite(data[step * src->ds_cnt])) {
5190 sum += data[step * src->ds_cnt];
5195 if (dst->vf.op == VDEF_TOTAL) {
5196 dst->vf.val = sum * src->step;
5197 dst->vf.when = 0; /* no time component */
5199 } else if (dst->vf.op == VDEF_AVERAGE) {
5200 dst->vf.val = sum / cnt;
5201 dst->vf.when = 0; /* no time component */
5204 average = sum / cnt;
5206 for (step = 0; step < steps; step++) {
5207 if (finite(data[step * src->ds_cnt])) {
5208 sum += pow((data[step * src->ds_cnt] - average), 2.0);
5211 dst->vf.val = pow(sum / cnt, 0.5);
5212 dst->vf.when = 0; /* no time component */
5224 while (step != steps && isnan(data[step * src->ds_cnt]))
5226 if (step == steps) {
5231 dst->vf.val = data[step * src->ds_cnt];
5232 dst->vf.when = src->start + (step + 1) * src->step;
5235 while (step != steps) {
5236 if (finite(data[step * src->ds_cnt])) {
5237 if (data[step * src->ds_cnt] < dst->vf.val) {
5238 dst->vf.val = data[step * src->ds_cnt];
5239 dst->vf.when = src->start + (step + 1) * src->step;
5247 /* The time value returned here is one step before the
5248 * actual time value. This is the start of the first
5252 while (step != steps && isnan(data[step * src->ds_cnt]))
5254 if (step == steps) { /* all entries were NaN */
5259 dst->vf.val = data[step * src->ds_cnt];
5260 dst->vf.when = src->start + step * src->step;
5265 /* The time value returned here is the
5266 * actual time value. This is the end of the last
5270 while (step >= 0 && isnan(data[step * src->ds_cnt]))
5272 if (step < 0) { /* all entries were NaN */
5277 dst->vf.val = data[step * src->ds_cnt];
5278 dst->vf.when = src->start + (step + 1) * src->step;
5284 case VDEF_LSLCORREL:{
5285 /* Bestfit line by linear least squares method */
5288 double SUMx, SUMy, SUMxy, SUMxx, SUMyy, slope, y_intercept, correl;
5295 for (step = 0; step < steps; step++) {
5296 if (finite(data[step * src->ds_cnt])) {
5299 SUMxx += step * step;
5300 SUMxy += step * data[step * src->ds_cnt];
5301 SUMy += data[step * src->ds_cnt];
5302 SUMyy += data[step * src->ds_cnt] * data[step * src->ds_cnt];
5306 slope = (SUMx * SUMy - cnt * SUMxy) / (SUMx * SUMx - cnt * SUMxx);
5307 y_intercept = (SUMy - slope * SUMx) / cnt;
5310 (SUMx * SUMy) / cnt) /
5312 (SUMx * SUMx) / cnt) * (SUMyy - (SUMy * SUMy) / cnt));
5314 if (dst->vf.op == VDEF_LSLSLOPE) {
5315 dst->vf.val = slope;
5318 } else if (dst->vf.op == VDEF_LSLINT) {
5319 dst->vf.val = y_intercept;
5322 } else if (dst->vf.op == VDEF_LSLCORREL) {
5323 dst->vf.val = correl;
5338 /* NaN < -INF < finite_values < INF */
5339 int vdef_percent_compar(
5345 /* Equality is not returned; this doesn't hurt except
5346 * (maybe) for a little performance.
5349 /* First catch NaN values. They are smallest */
5350 if (isnan(*(double *) a))
5352 if (isnan(*(double *) b))
5354 /* NaN doesn't reach this part so INF and -INF are extremes.
5355 * The sign from isinf() is compatible with the sign we return
5357 if (isinf(*(double *) a))
5358 return isinf(*(double *) a);
5359 if (isinf(*(double *) b))
5360 return isinf(*(double *) b);
5361 /* If we reach this, both values must be finite */
5362 if (*(double *) a < *(double *) b)
5371 rrd_info_type_t type,
5372 rrd_infoval_t value)
5374 im->grinfo_current = rrd_info_push(im->grinfo_current, key, type, value);
5375 if (im->grinfo == NULL) {
5376 im->grinfo = im->grinfo_current;
5387 /* Handling based on
5388 - ANSI C99 Specifications http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf
5389 - Single UNIX Specification version 2 http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html
5390 - POSIX:2001/Single UNIX Specification version 3 http://www.opengroup.org/onlinepubs/009695399/functions/strftime.html
5391 - POSIX:2008 Specifications http://www.opengroup.org/onlinepubs/9699919799/functions/strftime.html
5392 Specifications tells
5393 "If a conversion specifier is not one of the above, the behavior is undefined."
5396 "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.
5399 "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."
5401 POSIX:2008 introduce more complexe behavior that are not handled here.
5403 According to this, this code will replace:
5404 - % followed by @ by a %@
5405 - % followed by by a %SPACE
5406 - % followed by . by a %.
5407 - % followed by % by a %
5408 - % followed by t by a TAB
5409 - % followed by E then anything by '-'
5410 - % followed by O then anything by '-'
5411 - % followed by anything else by at least one '-'. More characters may be added to better fit expected output length
5415 for(j = 0; (j < FMT_LEG_LEN - 1) && (jj < FMT_LEG_LEN); j++) { /* we don't need to parse the last char */
5416 if (format[j] == '%') {
5417 if ((format[j+1] == 'E') || (format[j+1] == 'O')) {
5419 j+=2; /* We skip next 2 following char */
5420 } else if ((format[j+1] == 'C') || (format[j+1] == 'd') ||
5421 (format[j+1] == 'g') || (format[j+1] == 'H') ||
5422 (format[j+1] == 'I') || (format[j+1] == 'm') ||
5423 (format[j+1] == 'M') || (format[j+1] == 'S') ||
5424 (format[j+1] == 'U') || (format[j+1] == 'V') ||
5425 (format[j+1] == 'W') || (format[j+1] == 'y')) {
5427 if (jj < FMT_LEG_LEN) {
5430 j++; /* We skip the following char */
5431 } else if (format[j+1] == 'j') {
5433 if (jj < FMT_LEG_LEN - 1) {
5437 j++; /* We skip the following char */
5438 } else if ((format[j+1] == 'G') || (format[j+1] == 'Y')) {
5439 /* Assuming Year on 4 digit */
5441 if (jj < FMT_LEG_LEN - 2) {
5446 j++; /* We skip the following char */
5447 } else if (format[j+1] == 'R') {
5449 if (jj < FMT_LEG_LEN - 3) {
5455 j++; /* We skip the following char */
5456 } else if (format[j+1] == 'T') {
5458 if (jj < FMT_LEG_LEN - 6) {
5467 j++; /* We skip the following char */
5468 } else if (format[j+1] == 'F') {
5470 if (jj < FMT_LEG_LEN - 8) {
5481 j++; /* We skip the following char */
5482 } else if (format[j+1] == 'D') {
5484 if (jj < FMT_LEG_LEN - 6) {
5493 j++; /* We skip the following char */
5494 } else if (format[j+1] == 'n') {
5495 result[jj++] = '\r';
5496 result[jj++] = '\n';
5497 j++; /* We skip the following char */
5498 } else if (format[j+1] == 't') {
5499 result[jj++] = '\t';
5500 j++; /* We skip the following char */
5501 } else if (format[j+1] == '%') {
5503 j++; /* We skip the following char */
5504 } else if (format[j+1] == ' ') {
5505 if (jj < FMT_LEG_LEN - 1) {
5509 j++; /* We skip the following char */
5510 } else if (format[j+1] == '.') {
5511 if (jj < FMT_LEG_LEN - 1) {
5515 j++; /* We skip the following char */
5516 } else if (format[j+1] == '@') {
5517 if (jj < FMT_LEG_LEN - 1) {
5521 j++; /* We skip the following char */
5524 j++; /* We skip the following char */
5527 result[jj++] = format[j];
5530 result[jj] = '\0'; /* We must force the end of the string */