Add:Core:Added support for checking a files version

git-svn-id: http://svn.code.sf.net/p/navit/code/trunk/navit@1520 ffa7fe5e-494d-0410-b361-a75ebd5db220

1 files changed, 22 insertions, 30 deletions

diff --git a/navit/file.c b/navit/file.c
index ffe79f7d8..a17ed4ce1 100644
--- a/navit/file.c
+++ b/navit/file.c
@@ -43,8 +43,6 @@
 #define O_BINARY 0
 #endif
 
-static struct file *file_list;
-
 static GHashTable *file_name_hash;
 static int file_name_id;
 static struct cache *file_cache;
@@ -73,8 +71,6 @@ file_create(char *name)
 	file->size=stat.st_size;
 	file->name = g_strdup(name);
 	dbg_assert(file != NULL);
-	file->next=file_list;
-	file_list=file;
 	return file;
 }
 
@@ -250,18 +246,6 @@ file_remap_readonly(struct file *f)
 }
 
 void
-file_remap_readonly_all(void)
-{
-	struct file *f=file_list;
-	int limit=1000;
-
-	while (f && limit-- > 0) {
-		file_remap_readonly(f);
-		f=f->next;
-	}
-}
-
-void
 file_unmap(struct file *f)
 {
 #if defined(_WIN32) || defined(__CEGCC__)
@@ -271,20 +255,6 @@ file_unmap(struct file *f)
 #endif
 }
 
-void
-file_unmap_all(void)
-{
-	struct file *f=file_list;
-	int limit=1000;
-
-	while (f && limit-- > 0) {
-		file_unmap(f);
-		f=f->next;
-	}
-}
-
-
-
 void *
 file_opendir(char *dir)
 {
@@ -405,6 +375,28 @@ file_get_param(struct file *file, struct param_list *param, int count)
 	return i-count;
 }
 
+int
+file_version(struct file *file, int byname)
+{
+#ifndef __CEGCC__
+	struct stat st;
+	int error;
+	if (byname)
+		error=stat(file->name, &st);
+	else
+		error=fstat(file->fd, &st);
+	if (error || !file->version || file->mtime != st.st_mtime || file->ctime != st.st_ctime) {
+		file->mtime=st.st_mtime;
+		file->ctime=st.st_ctime;
+		file->version++;
+		dbg(0,"%s now version %d\n", file->name, file->version);
+	}
+	return file->version;
+#else
+	return 0;
+#endif
+}
+
 void
 file_init(void)
 {