1 files changed, 63 insertions, 0 deletions
diff --git a/lib/libalpm/backup.c b/lib/libalpm/backup.c
new file mode 100644
index 00000000..f664277e
--- /dev/null
+++ b/lib/libalpm/backup.c
@@ -0,0 +1,63 @@
+/*
+ *  backup.c
+ * 
+ *  Copyright (c) 2002-2005 by Judd Vinet <jvinet@zeroflux.org>
+ * 
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
+ *  USA.
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <string.h>
+/* pacman */
+#include "backup.h"
+
+/* Look for a filename in a pkginfo_t.backup list.  If we find it,
+ * then we return the md5 hash (parsed from the same line)
+ */
+char *_alpm_needbackup(char* file, PMList *backup)
+{
+	PMList *lp;
+
+	if(file == NULL || backup == NULL) {
+		return(NULL);
+	}
+
+	/* run through the backup list and parse out the md5 hash for our file */
+	for(lp = backup; lp; lp = lp->next) {
+		char *str = strdup(lp->data);
+		char *ptr;
+		
+		/* tab delimiter */
+		ptr = strchr(str, '\t');
+		if(ptr == NULL) {
+			free(str);
+			continue;
+		}
+		*ptr = '\0';
+		ptr++;
+		/* now str points to the filename and ptr points to the md5 hash */
+		if(!strcmp(file, str)) {
+			free(str);
+			return(strdup(ptr));
+		}
+		free(str);
+	}
+
+	return(NULL);
+}
+
+/* vim: set ts=2 sw=2 noet: */