From: Sandro Santilli <strk@keybit.net>
Date: Fri, 15 Oct 2004 09:41:01 +0000 (+0000)
Subject: Added a trailing zeros trimmer
X-Git-Tag: pgis_1_0_0RC1~280
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=57bf5a303f9b667b15d2f7efc4935cf9e9b7c59a;p=postgis

Added a trailing zeros trimmer


git-svn-id: http://svn.osgeo.org/postgis/trunk@1005 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/lwgeom/liblwgeom.c b/lwgeom/liblwgeom.c
index db91d7894..84436ddf4 100644
--- a/lwgeom/liblwgeom.c
+++ b/lwgeom/liblwgeom.c
@@ -136,3 +136,36 @@ lwfree(void *mem)
 {
 	return lwfree_var(mem);
 }
+
+/*
+ * Removes trailing zeros and dot for a %f formatted number.
+ * Modifies input.
+ */
+void
+trim_trailing_zeros(char *str)
+{
+	char *ptr, *totrim=NULL;
+	int len;
+	int i;
+
+	//lwnotice("input: %s", str);
+	
+	ptr = strchr(str, '.');
+	if ( ! ptr ) return; // no dot, no decimal digits
+
+	//lwnotice("ptr: %s", ptr);
+
+	len = strlen(ptr);
+	for (i=len-1; i; i--)
+	{
+		if ( ptr[i] != '0' ) break;
+		totrim=&ptr[i];
+	}
+	if ( totrim )
+	{
+		if ( ptr == totrim-1 ) *ptr = '\0';
+		else *totrim = '\0';
+	}
+	
+	//lwnotice("output: %s", str);
+}
diff --git a/lwgeom/liblwgeom.h b/lwgeom/liblwgeom.h
index 1ead401c3..2e0fe8311 100644
--- a/lwgeom/liblwgeom.h
+++ b/lwgeom/liblwgeom.h
@@ -1020,4 +1020,7 @@ extern void *lwalloc(size_t size);
 extern void *lwrealloc(void *mem, size_t size);
 extern void lwfree(void *mem);
 
+/* Utilities */
+extern void trim_trailing_zeros(char *num);
+
 #endif // !defined _LIBLWGEOM_H