From aed5641cac5013af2b076e0aba9c998a4de3c2dd Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Thu, 3 Jan 2008 21:30:59 +0000
Subject: [PATCH] get rid of DASHED, only use dashes syntax. less redundancy --
 thomas.gutzler gmail.com

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1263 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 doc/rrdgraph_examples.pod |  4 +--
 doc/rrdgraph_graph.pod    | 28 ++++++++--------
 src/rrd_graph_helper.c    | 85 +++++++++++++++++++++++------------------------
 3 files changed, 57 insertions(+), 60 deletions(-)

diff --git a/doc/rrdgraph_examples.pod b/doc/rrdgraph_examples.pod
index 3530193..664b965 100644
--- a/doc/rrdgraph_examples.pod
+++ b/doc/rrdgraph_examples.pod
@@ -108,12 +108,12 @@ Also works for HRULE and VRULE
 =item *
 
 default style: - - - - -
-    LINE1:data#FF0000:"dashed line":DASHED
+    LINE1:data#FF0000:"dashed line":dashes
 
 =item *
 
 more fancy style with offset: - -  --- -  --- -
-    LINE1:data#FF0000:"another dashed line":DASHED:dashes=15,5,5,10:dash-offset=10
+    LINE1:data#FF0000:"another dashed line":dashes=15,5,5,10:dash-offset=10
 
 =head2 Time ranges
 
diff --git a/doc/rrdgraph_graph.pod b/doc/rrdgraph_graph.pod
index bba5044..f40877c 100644
--- a/doc/rrdgraph_graph.pod
+++ b/doc/rrdgraph_graph.pod
@@ -12,11 +12,11 @@ B<GPRINT>B<:>I<vname>B<:>I<format>
 
 B<COMMENT>B<:>I<text>
 
-B<VRULE>B<:>I<time>B<#>I<color>[B<:>I<legend>][B<:DASHED>[B<:dashes=>I<n_on>[,I<n_off>[,I<n_on>,I<n_off>,[...]]]][B<:dash-offset=>I<offset>]]
+B<VRULE>B<:>I<time>B<#>I<color>[B<:>I<legend>][B<:dashes>[B<=>I<on_s>[,I<off_s>[,I<on_s>,I<off_s>]...]][B<:dash-offset=>I<offset>]]
 
-B<HRULE>B<:>I<value>B<#>I<color>[B<:>I<legend>][B<:DASHED>[B<:dashes=>I<n_on>[,I<n_off>[,I<n_on>,I<n_off>,[...]]]][B<:dash-offset=>I<offset>]]
+B<HRULE>B<:>I<value>B<#>I<color>[B<:>I<legend>][B<:dashes>[B<=>I<on_s>[,I<off_s>[,I<on_s>,I<off_s>]...]][B<:dash-offset=>I<offset>]]
 
-B<LINE>[I<width>]B<:>I<value>[B<#>I<color>][B<:>[I<legend>][B<:STACK>]][B<:DASHED>[B<:dashes=>I<n_on>[,I<n_off>[,I<n_on>,I<n_off>,[...]]]][B<:dash-offset=>I<offset>]]
+B<LINE>[I<width>]B<:>I<value>[B<#>I<color>][B<:>[I<legend>][B<:STACK>]][B<:dashes>[B<=>I<on_s>[,I<off_s>[,I<on_s>,I<off_s>]...]][B<:dash-offset=>I<offset>]]
 
 B<AREA>B<:>I<value>[B<#>I<color>][B<:>[I<legend>][B<:STACK>]]
 
@@ -221,23 +221,23 @@ Text is printed literally in the legend section of the graph. Note that in
 RRDtool 1.2 you have to escape colons in COMMENT text in the same way you
 have to escape them in B<*PRINT> commands by writing B<'\:'>.
 
-=item B<VRULE>B<:>I<time>B<#>I<color>[B<:>I<legend>][B<:DASHED>[B<:dashes=>I<n_on>[,I<n_off>[,I<n_on>,I<n_off>,[...]]]][B<:dash-offset=>I<offset>]]
+=item B<VRULE>B<:>I<time>B<#>I<color>[B<:>I<legend>][B<:dashes>[B<=>I<on_s>[,I<off_s>[,I<on_s>,I<off_s>]...]][B<:dash-offset=>I<offset>]]
 
 Draw a vertical line at I<time>.  Its color is composed from three
 hexadecimal numbers specifying the rgb color components (00 is off, FF is
 maximum) red, green and blue followed by an optional alpha. Optionally, a legend box and string is
 printed in the legend section. I<time> may be a number or a variable
 from a B<VDEF>. It is an error to use I<vname>s from B<DEF> or B<CDEF> here.
-Dashed lines can be drawn using the B<DASHED> modifier. See B<LINE> for more
+Dashed lines can be drawn using the B<dashes> modifier. See B<LINE> for more
 details.
 
-=item B<HRULE>B<:>I<value>B<#>I<color>[B<:>I<legend>][B<:DASHED>[B<:dashes=>I<n_on>[,I<n_off>[,I<n_on>,I<n_off>,[...]]]][B<:dash-offset=>I<offset>]]
+=item B<HRULE>B<:>I<value>B<#>I<color>[B<:>I<legend>][B<:dashes>[B<=>I<on_s>[,I<off_s>[,I<on_s>,I<off_s>]...]][B<:dash-offset=>I<offset>]]
 
 Draw a horizontal line at I<value>.  HRULE acts much like LINE except that
 will have no effect on the scale of the graph. If a HRULE is outside the
 graphing area it will just not be visible.
 
-=item B<LINE>[I<width>]B<:>I<value>[B<#>I<color>][B<:>[I<legend>][B<:STACK>]][B<:DASHED>[B<:dashes=>I<n_on>[,I<n_off>[,I<n_on>,I<n_off>,[...]]]][B<:dash-offset=>I<offset>]]
+=item B<LINE>[I<width>]B<:>I<value>[B<#>I<color>][B<:>[I<legend>][B<:STACK>]][B<:dashes>[B<=>I<on_s>[,I<off_s>[,I<on_s>,I<off_s>]...]][B<:dash-offset=>I<offset>]]
 
 Draw a line of the specified width onto the graph. I<width> can be a
 floating point number. If the color is not specified, the drawing is done
@@ -248,13 +248,13 @@ B<VDEF>, and B<CDEF>.  If the optional B<STACK> modifier is used, this line
 is stacked on top of the previous element which can be a B<LINE> or an
 B<AREA>.
 
-The B<DASHED> modifier enables dashed line style. Without any further options
-a symmetric dashed line with a segment length of 5 pixels will be drawn.
-The dash pattern can be changed using the B<dashes> parameter, which can be
-followed by either one value or an even number (1, 2, 4, 6, ...) of positive
-values. Each value provides the length of alternate I<n_on> and I<n_off>
-portions of the stroke. The B<dash-offset> parameter specifies an I<offset>
-into the pattern at which the stroke begins.
+The B<dashes> modifier enables dashed line style. Without any further options
+a symmetric dashed line with a segment length of 5 pixels will be drawn. The
+dash pattern can be changed if the B<dashes=> parameter is followed by either
+one value or an even number (1, 2, 4, 6, ...) of positive values. Each value
+provides the length of alternate I<on_s> and I<off_s> portions of the
+stroke. The B<dash-offset> parameter specifies an I<offset> into the pattern
+at which the stroke begins.
 
 When you do not specify a color, you cannot specify a legend.  Should
 you want to use STACK, use the "LINEx:<value>::STACK" form.
diff --git a/src/rrd_graph_helper.c b/src/rrd_graph_helper.c
index d4b3732..cac3d7a 100644
--- a/src/rrd_graph_helper.c
+++ b/src/rrd_graph_helper.c
@@ -764,36 +764,30 @@ int rrd_parse_PVHLAST(
             dprintf("- not STACKing\n");
     }
 
-    dprintf("- still more, should be DASHED[:...]\n");
+    dprintf("- still more, should be dashes[=...]\n");
     dprintf("- parsing '%s'\n", &line[*eaten]);
     if (line[*eaten] != '\0') {
-        // parse dash arguments here. Possible options:
-        // DASHED
-        // DASHED:dashes=n_on,n_off,n_on,n_off
-        // DASHED:dashes=n_on,n_off,n_on,n_off:dash-offset=offset
-        // start with DASHED
-        j = scan_for_col(&line[*eaten], 6, tmpstr);
-        if (!strcmp("DASHED", tmpstr)) {
+        /* parse dash arguments here. Possible options:
+           - dashes
+           - dashes=n_on[,n_off[,n_on,n_off]]
+           - dashes[=n_on[,n_off[,n_on,n_off]]]:dash-offset=offset
+           allowing 64 characters for definition of dash style */
+        j = scan_for_col(&line[*eaten], 64, tmpstr);
+        /* start with dashes */
+        if (strcmp(tmpstr, "dashes") == 0) {
+            /* if line was "dashes" or "dashes:dash-offset=xdashes="
+               tmpstr will be "dashes" */
             dprintf("- found %s\n", tmpstr);
-            // initialise all required variables we need for dashed lines
-            // using default dash length of 5 pixels
+            /* initialise all required variables we need for dashed lines
+               using default dash length of 5 pixels */
             gdp->dash = 1;
             gdp->p_dashes = (double *) malloc(sizeof(double));
             gdp->p_dashes[0] = 5;
             gdp->ndash = 1;
             gdp->offset = 0;
             (*eaten) += j;
-            if (line[*eaten] == ':')
-                (*eaten) += 1;
-        }
-        if (line[*eaten] == '\0') {
-            dprintf("- done parsing line\n");
-            return 0;
-        }
-        // DASHED:dashes=n_on,n_off,n_on,n_off
-        // allowing 64 characters for definition of dash style
-        j = scan_for_col(&line[*eaten], 64, tmpstr);
-        if (sscanf(tmpstr, "dashes=%s", tmpstr)) {
+        } else if (sscanf(tmpstr, "dashes=%s", tmpstr)) {
+            /* dashes=n_on[,n_off[,n_on,n_off]] */
             char      csv[64];
             char     *pch;
             float     dsh;
@@ -806,36 +800,39 @@ int rrd_parse_PVHLAST(
                 pch = strtok(NULL, ",");
                 count++;
             }
-            dprintf("- %d dash values found: ", count);
-            gdp->ndash = count;
-            if (gdp->p_dashes != NULL)
-                free(gdp->p_dashes);
-            gdp->p_dashes = (double *) malloc(sizeof(double) * count);
-            pch = strtok(csv, ",");
-            count = 0;
-            while (pch != NULL) {
-                if (sscanf(pch, "%f", &dsh)) {
-                    gdp->p_dashes[count] = (double) dsh;
-                    dprintf("%.1f ", gdp->p_dashes[count]);
-                    count++;
+            dprintf("- %d dash value(s) found: ", count);
+            if (count > 0) {
+                gdp->dash = 1;
+                gdp->ndash = count;
+                gdp->p_dashes = (double *) malloc(sizeof(double) * count);
+                pch = strtok(csv, ",");
+                count = 0;
+                while (pch != NULL) {
+                    if (sscanf(pch, "%f", &dsh)) {
+                        gdp->p_dashes[count] = (double) dsh;
+                        dprintf("%.1f ", gdp->p_dashes[count]);
+                        count++;
+                    }
+                    pch = strtok(NULL, ",");
                 }
-                pch = strtok(NULL, ",");
-            }
-            dprintf("\n");
+                dprintf("\n");
+            } else
+                dprintf("- syntax error. No dash lengths found!\n");
             (*eaten) += j;
-            if (line[*eaten] == ':')
-                (*eaten) += 1;
-        }
-        if (line[*eaten] == '\0') {
+        } else
+            dprintf("- error: expected dashes[=...], found %s\n", tmpstr);
+        if (line[*eaten] == ':') {
+            (*eaten) += 1;
+        } else if (line[*eaten] == '\0') {
             dprintf("- done parsing line\n");
             return 0;
         }
-        // DASHED:dashes=n_on,n_off,n_on,n_off:dash-offset=offset
-        // allowing 16 characters for dash-offset=....
-        // => 4 characters for the offset value
+        /* dashes[=n_on[,n_off[,n_on,n_off]]]:dash-offset=offset
+           allowing 16 characters for dash-offset=....
+           => 4 characters for the offset value */
         j = scan_for_col(&line[*eaten], 16, tmpstr);
         if (sscanf(tmpstr, "dash-offset=%lf", &gdp->offset)) {
-            dprintf("- found %s\n", tmpstr);
+            dprintf("- found dash-offset=%.1f\n", gdp->offset);
             gdp->dash = 1;
             (*eaten) += j;
             if (line[*eaten] == ':')
-- 
2.11.0