Made PRINT and GPRINT aware of VDEF statements

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@42 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/doc/rrdgraph_graph.pod b/doc/rrdgraph_graph.pod
index a94aa37..eed7610 100644 (file)
--- a/doc/rrdgraph_graph.pod
+++ b/doc/rrdgraph_graph.pod
@@ -44,7 +44,7 @@ Similarly no report is generated if you don't use print options.
 
 B<PRINT:>I<vname>B<:>I<CF>B<:>I<format>
 
-I<Soon depriciated. Use the new form of this command in new scripts.>
+I<Depriciated. Use the new form of this command in new scripts.>
 The first form of this command is to be used with B<CDEF> I<vname>s.
 
 B<PRINT:>I<vname>B<:>I<format>
@@ -140,7 +140,7 @@ B<%Z> time zone
 
 B<GPRINT:>I<vname>B<:>I<CF>B<:>I<format>
 
-I<Soon depriciated. Use the new form of this command in new scripts.>
+I<Depriciated. Use the new form of this command in new scripts.>
 This is the same as B<PRINT> but now it is printed inside the graph.
 See L<PRINT> for more information.
 
@@ -155,12 +155,11 @@ Text is printed literally in the legend section of the graph
 
 B<HRULE:>I<value>B<#>I<rrggbb>[B<:>I<legend>]
 
-I<Soon depriciated. Use a VDEF and a LINEx in new scripts.>
-
 Draw an horizontal line at I<value>. Its color is composed from three
 hexadecimal numbers specifying the color components (00 is off, FF is
 maximum) red, green and blue.  Optionally a legend box and string is
-printed in the legend section.
+printed in the legend section. I<value> can be a variable from a B<VDEF>.
+It is an error to use I<vname>s from B<DEF> or B<CDEF> here.
 
 B<VRULE:>I<time>B<#>I<rrggbb>[B<:>I<legend>]
 

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 18f7d23..313c518 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1303,49 +1303,59 @@ print_calc(image_desc_t *im, char ***prdata)
                return 0;
            }
        case GF_GPRINT:
+           /* PRINT and GPRINT can now print VDEF generated values.
+            * There's no need to do any calculations on them as these
+            * calculations were already made.
+            */
            vidx = im->gdes[i].vidx;
-           max_ii =((im->gdes[vidx].end 
-                     - im->gdes[vidx].start)
-                    /im->gdes[vidx].step
-                    *im->gdes[vidx].ds_cnt);
-           printval = DNAN;
-           validsteps = 0;
-           for(ii=im->gdes[vidx].ds+im->gdes[vidx].ds_cnt;
-               ii < max_ii+im->gdes[vidx].ds_cnt;
-               ii+=im->gdes[vidx].ds_cnt){
-                if (! finite(im->gdes[vidx].data[ii]))
-                    continue;
-                if (isnan(printval)){
-                    printval = im->gdes[vidx].data[ii];
-                    validsteps++;
-                   continue;
-               }
+           if (im->gdes[vidx].gf==GF_VDEF) { /* simply use vals */
+               printval = im->gdes[vidx].yrule;
+           } else { /* need to calculate max,min,avg etcetera */
+               max_ii =((im->gdes[vidx].end 
+                       - im->gdes[vidx].start)
+                       / im->gdes[vidx].step
+                       * im->gdes[vidx].ds_cnt);
+               printval = DNAN;
+               validsteps = 0;
+               for(ii=im->gdes[vidx].ds+im->gdes[vidx].ds_cnt;
+                       ii < max_ii+im->gdes[vidx].ds_cnt;
+                       ii+=im->gdes[vidx].ds_cnt){
+                   if (! finite(im->gdes[vidx].data[ii]))
+                       continue;
+                   if (isnan(printval)){
+                       printval = im->gdes[vidx].data[ii];
+                       validsteps++;
+                       continue;
+                   }
 
-               switch (im->gdes[i].cf){
-               case CF_HWPREDICT:
-               case CF_DEVPREDICT:
-               case CF_DEVSEASONAL:
-               case CF_SEASONAL:
-               case CF_AVERAGE:
-                   validsteps++;
-                   printval += im->gdes[vidx].data[ii];
-                   break;
-               case CF_MINIMUM:
-                   printval = min( printval, im->gdes[vidx].data[ii]);
-                   break;
-           case CF_FAILURES:
-               case CF_MAXIMUM:
-                   printval = max( printval, im->gdes[vidx].data[ii]);
-                   break;
-               case CF_LAST:
-                   printval = im->gdes[vidx].data[ii];
+                   switch (im->gdes[i].cf){
+                       case CF_HWPREDICT:
+                       case CF_DEVPREDICT:
+                       case CF_DEVSEASONAL:
+                       case CF_SEASONAL:
+                       case CF_AVERAGE:
+                           validsteps++;
+                           printval += im->gdes[vidx].data[ii];
+                           break;
+                       case CF_MINIMUM:
+                           printval = min( printval, im->gdes[vidx].data[ii]);
+                           break;
+                       case CF_FAILURES:
+                       case CF_MAXIMUM:
+                           printval = max( printval, im->gdes[vidx].data[ii]);
+                           break;
+                       case CF_LAST:
+                           printval = im->gdes[vidx].data[ii];
+                   }
                }
-           }
-           if (im->gdes[i].cf ==  CF_AVERAGE || im -> gdes[i].cf > CF_LAST) {
-               if (validsteps > 1) {
-                   printval = (printval / validsteps);
+               if (im->gdes[i].cf==CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
+                   if (validsteps > 1) {
+                       printval = (printval / validsteps);
+                   }
                }
-           }
+           } /* prepare printval */
+
+
            if ((percent_s = strstr(im->gdes[i].format,"%S")) != NULL) {
                /* Magfact is set to -1 upon entry to print_calc.  If it
                 * is still less than 0, then we need to run auto_scale.
@@ -1360,10 +1370,10 @@ print_calc(image_desc_t *im, char ***prdata)
                    printval /= magfact;
                }
                *(++percent_s) = 's';
-           }
-           else if (strstr(im->gdes[i].format,"%s") != NULL) {
+           } else if (strstr(im->gdes[i].format,"%s") != NULL) {
                auto_scale(im,&printval,&si_symb,&magfact);
            }
+
            if (im->gdes[i].gf == GF_PRINT){
                (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
                if (bad_format(im->gdes[i].format)) {
@@ -2795,26 +2805,56 @@ rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize)
        case GF_PRINT:
            im.prt_c++;
        case GF_GPRINT:
-           if(sscanf(
-               &argv[i][argstart],
-               "%29[^#:]:" CF_NAM_FMT ":%n",
-               varname,symname,&strstart) == 2){
-               scan_for_col(&argv[i][argstart+strstart],FMT_LEG_LEN,im.gdes[im.gdes_c-1].format);
-               if((im.gdes[im.gdes_c-1].vidx=find_var(&im,varname))==-1){
-                   im_free(&im);
-                   rrd_set_error("unknown variable '%s'",varname);
-                   return -1;
-               }       
-               if((im.gdes[im.gdes_c-1].cf=cf_conv(symname))==-1){
-                   im_free(&im);
-                   return -1;
-               }
-               
-           } else {
+           strstart=0;
+           sscanf(&argv[i][argstart], DEF_NAM_FMT ":%n"
+                   ,varname
+                   ,&strstart
+           );
+
+           if (strstart==0) {
                im_free(&im);
-               rrd_set_error("can't parse '%s'",&argv[i][argstart]);
+               rrd_set_error("can't parse vname in '%s'",&argv[i][argstart]);
                return -1;
-           }
+           };
+
+           if ((im.gdes[im.gdes_c-1].vidx=find_var(&im,varname))==-1){
+               im_free(&im);
+               rrd_set_error("Unknown variable '%s' in (G)PRINT",varname);
+               return -1;
+           } else {
+               int n=0;
+
+               sscanf(&argv[i][argstart+strstart],CF_NAM_FMT ":%n"
+                   ,symname
+                   ,&n
+               );
+               if (im.gdes[im.gdes[im.gdes_c-1].vidx].gf==GF_VDEF) {
+                   /* No consolidation function should be present */
+                   if (n != 0) {
+                       rrd_set_error("(G)PRINT of VDEF needs no CF");
+                       im_free(&im);
+                       return -1;
+                   }
+               } else {
+                   /* A consolidation function should follow */
+                   if (n==0) {
+                       im_free(&im);
+                       rrd_set_error("Missing or incorrect CF in (G)PRINTing '%s' (%s)",varname,&argv[i][argstart]);
+                       return -1;
+                   };
+                   if((im.gdes[im.gdes_c-1].cf=cf_conv(symname))==-1){
+                       im_free(&im);
+                       return -1;
+                   };
+                   strstart+=n;
+               };
+           };
+
+           scan_for_col(
+                       &argv[i][argstart+strstart]
+                       ,FMT_LEG_LEN
+                       ,im.gdes[im.gdes_c-1].format
+                       );
            break;
        case GF_COMMENT:
            if(strlen(&argv[i][argstart])>FMT_LEG_LEN) argv[i][argstart+FMT_LEG_LEN-3]='\0' ;