allow for input lines of arbitrary length in rrdtool pipe mode -- roger.meier terreac...

[rrdtool.git] / src / rrd_tool.c

diff --git a/src/rrd_tool.c b/src/rrd_tool.c
index 2e0bf9c..8bd4ded 100644 (file)
--- a/src/rrd_tool.c
+++ b/src/rrd_tool.c
@@ -22,7 +22,7 @@ void PrintUsage(char *cmd)
 {
 
     char help_main[] =
-          "RRDtool " PACKAGE_VERSION "  Copyright 1997-2005 by Tobias Oetiker <tobi@oetiker.ch>\n"
+          "RRDtool " PACKAGE_VERSION "  Copyright 1997-2006 by Tobias Oetiker <tobi@oetiker.ch>\n"
            "               Compiled " __DATE__ " " __TIME__ "\n\n"
           "Usage: rrdtool [options] command command_options\n\n";
 
@@ -114,9 +114,10 @@ void PrintUsage(char *cmd)
           "\t\t[-f|--imginfo printfstr]\n"
           "\t\t[-a|--imgformat PNG]\n"
           "\t\t[-c|--color COLORTAG#rrggbb[aa]] [-t|--title string]\n"
-          "\t\t[DEF:vname=rrd:ds-name:CF]\n"
-          "\t\t[CDEF:vname=rpn-expression]\n";
+          "\t\t[-W|--watermark string]\n"
+          "\t\t[DEF:vname=rrd:ds-name:CF]\n";
     char help_graph3[] =
+          "\t\t[CDEF:vname=rpn-expression]\n"
           "\t\t[VDEF:vdefname=rpn-expression]\n"
           "\t\t[PRINT:vdefname:format]\n"
           "\t\t[GPRINT:vdefname:format]\n"
@@ -294,11 +295,34 @@ void PrintUsage(char *cmd)
     fputs(help_lic, stdout);
 }
 
+static char *fgetslong(char **aLinePtr, FILE *stream)
+{
+   char *linebuf;
+   size_t bufsize = MAX_LENGTH;
+   int eolpos = 0;
+
+   if (feof(stream)) return *aLinePtr = 0;
+   if (!(linebuf = malloc(bufsize))) {
+      perror("fgetslong: malloc");
+      exit(1);
+   }
+   linebuf[0] = '\0';
+   while (fgets(linebuf + eolpos, MAX_LENGTH, stream)) {
+      eolpos += strlen(linebuf + eolpos);
+      if (linebuf[eolpos - 1] == '\n') return *aLinePtr = linebuf;
+      bufsize += MAX_LENGTH;
+      if (!(linebuf = realloc(linebuf, bufsize))) {
+         perror("fgetslong: realloc");
+         exit(1);
+      }
+   }
+   return *aLinePtr = linebuf[0] ? linebuf : 0;
+}
 
 int main(int argc, char *argv[])
 {
     char **myargv;
-    char aLine[MAX_LENGTH];
+    char *aLine;
     char *firstdir="";
 #ifdef MUST_DISABLE_SIGFPE
     signal(SIGFPE,SIG_IGN);
@@ -361,9 +385,9 @@ int main(int argc, char *argv[])
              }
           }
 
-           while (fgets(aLine, sizeof(aLine)-1, stdin)){
+           while (fgetslong(&aLine, stdin)){
                if ((argc = CountArgs(aLine)) == 0)  {
-                   fprintf(stderr,"ERROR: not enough arguments\n");
+                   printf("ERROR: not enough arguments\n");
                }
                if ((myargv = (char **) malloc((argc+1) * 
                                               sizeof(char *))) == NULL)   {
@@ -396,6 +420,7 @@ int main(int argc, char *argv[])
                  }
                }
                fflush(stdout); /* this is important for pipes to work */
+                free(aLine);
            }
        }
     else if (argc == 2)
@@ -650,8 +675,15 @@ int HandleInputLine(int argc, char **argv, FILE* out)
        double ymin,ymax;
        int i;
        int tostdout = (strcmp(argv[2],"-") == 0);      
+       int imginfo = 0;
+       for (i=2;i<argc;i++){
+               if (strcmp(argv[i],"--imginfo") == 0 || strcmp(argv[i],"-f") == 0){
+                       imginfo = 1;
+                       break;
+               }
+       }
        if( rrd_graph(argc-1, &argv[1], &calcpr, &xsize, &ysize, NULL, &ymin, &ymax) != -1 ) {
-           if (!tostdout) 
+           if (!tostdout && !imginfo) 
                printf ("%dx%d\n",xsize,ysize);
            if (calcpr) {
                for(i=0;calcpr[i];i++){