From: alex <alex@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Thu, 26 Jul 2001 02:27:46 +0000 (+0000)
Subject: Supporting functions for rrd_graph.  Functions that are used frequently
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=47fb0693421e20cd23730a24c724cc44c38c145b;p=rrdtool.git

Supporting functions for rrd_graph.  Functions that are used frequently
and/or from different places should be added here in stead of repeating
them in rrd_graph.c over and over again.


git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@48 a5681a0c-68f1-0310-ab6d-d61299d08faa
---

diff --git a/src/rrd_graph_helper.c b/src/rrd_graph_helper.c
new file mode 100644
index 0000000..d325bf0
--- /dev/null
+++ b/src/rrd_graph_helper.c
@@ -0,0 +1,81 @@
+/**********************************************************
+ *** Several generic helper functions for rrd_graph.c   ***
+ **********************************************************/
+
+#include "rrd_graph.h"
+#include "rrd_graph_helper.h"
+
+/**********************************************************
+ *** Helper functions for parsing command file          ***
+ **********************************************************/
+
+/* Parse a VNAME followed by an equal sign ( CDEF:VNAME= )
+ *
+ * Input:	pointer to argv
+ * Input:	pointer to im structure
+ * Input:	pointer to error string
+ * Output:	number of chars eaten (0 means error)
+ *
+ * Usage:	n=parse_vname( &argv[i][argstart],&im, "VDEF");
+ *		if (n==0) { error } else { argstart+=n };
+ */
+int
+parse_vname1(cptr,im,err)
+char *		cptr;
+image_desc_t *	im;
+char *		err;
+{
+    int		n=0,vidx;
+
+    sscanf(cptr, DEF_NAM_FMT "=%n",im->gdes[im->gdes_c-1].vname,&n);
+
+    /* Check if the sequence matches, including the
+     * terminating equal sign */
+    if (n==0) {
+	im_free(im);
+	rrd_set_error("Can't parse VNAME in %s: '%s'",err,cptr);
+	return 0;
+    }
+
+    /* Check if this is an unused variable */
+    vidx=find_var(im,im->gdes[im->gdes_c-1].vname);
+    if (vidx!=-1) {
+	switch(im->gdes[vidx].gf) {
+	    case GF_DEF:
+		rrd_set_error("Duplicate variable in %s: '%s' defined as DEF",
+			err,im->gdes[im->gdes_c-1].vname);
+		break;
+	    case GF_CDEF:
+		rrd_set_error("Duplicate variable in %s: '%s' defined as CDEF",
+			err,im->gdes[im->gdes_c-1].vname);
+		break;
+	    case GF_VDEF:
+		rrd_set_error("Duplicate variable in %s: '%s' defined as VDEF",
+			err,im->gdes[im->gdes_c-1].vname);
+		break;
+	    default:
+		rrd_set_error("Duplicate variable in %s: '%s' defined",
+			err,im->gdes[im->gdes_c-1].vname);
+		break;
+	};
+	im_free(im);
+	return 0;
+    }
+
+    /* VNAME must start with a character other than numeric */
+    if (isdigit(im->gdes[im->gdes_c-1].vname[0])) {
+	rrd_set_error("Variable in %s starts with a digit: '%s'",
+		err,im->gdes[im->gdes_c-1].vname);
+	im_free(im);
+	return 0;
+    };
+
+    /* Reserved words checking.  Not at the moment. */
+
+    return n;
+}
+
+/**********************************************************
+ ***                                                    ***
+ **********************************************************/
+
diff --git a/src/rrd_graph_helper.h b/src/rrd_graph_helper.h
new file mode 100644
index 0000000..8decc72
--- /dev/null
+++ b/src/rrd_graph_helper.h
@@ -0,0 +1 @@
+int parse_vname1(char *, image_desc_t *, char *);