From 0a9d50d2c38d3638457c0d654796dfb426d010a1 Mon Sep 17 00:00:00 2001
From: angel <angel@c87de0a0-a11c-0410-a1e5-866214bc28b2>
Date: Tue, 13 Sep 2005 17:34:58 +0000
Subject: [PATCH] New function locate_file(), that returns the resolved path to
 a file using path_fopen().

git-svn-id: file:///home/angel/tmp/svn-triptico/ahxm/trunk@720 c87de0a0-a11c-0410-a1e5-866214bc28b2
---
 support.c | 34 ++++++++++++++++++++++++++++------
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/support.c b/support.c
index 7ee4059..da5bbff 100644
--- a/support.c
+++ b/support.c
@@ -38,6 +38,8 @@
 static char ** library_path=NULL;
 static int n_library_paths=0;
 
+static char located_file[2048];
+
 /*******************
 	Code
 ********************/
@@ -131,6 +133,9 @@ FILE * path_fopen(char * filename, char * mode)
 	/* try first here */
 	if((f=fopen(filename, mode)) != NULL)
 	{
+		strncpy(located_file, filename, sizeof(located_file));
+		located_file[sizeof(located_file) - 1]='\0';
+
 		add_to_library_path(filename, 1);
 		return(f);
 	}
@@ -138,15 +143,13 @@ FILE * path_fopen(char * filename, char * mode)
 	/* couldn't open; try concatenating all stored paths */
 	for(n=n_library_paths - 1;n >= 0;n--)
 	{
-		char tmp[4096];
-
-		snprintf(tmp, sizeof(tmp) - 1, "%s/%s",
+		snprintf(located_file, sizeof(located_file), "%s/%s",
 			library_path[n], filename);
-		tmp[sizeof(tmp) - 1]='\0';
+		located_file[sizeof(located_file) - 1]='\0';
 
-		if((f=fopen(tmp, mode)) != NULL)
+		if((f=fopen(located_file, mode)) != NULL)
 		{
-			add_to_library_path(tmp, 1);
+			add_to_library_path(located_file, 1);
 			break;
 		}
 	}
@@ -155,3 +158,22 @@ FILE * path_fopen(char * filename, char * mode)
 }
 
 
+/**
+ * locate_file - Locates a file inside the path
+ * @filename: the file to be located
+ *
+ * Locates a file inside the library path maintained by path_fopen()
+ * and add_library_path(). If the file is found, a pointer to a static
+ * buffer containing the real path of the file is returned, or
+ * NULL otherwise.
+ */
+char * locate_file(char * filename)
+{
+	FILE * f;
+
+	if((f=path_fopen(filename, "r")) == NULL)
+		return(NULL);
+
+	fclose(f);
+	return(located_file);
+}
-- 
2.11.4.GIT