Add trim_end() and use it to remove trailing slashes from repo paths

The new function removes all trailing instances of an arbitrary character
from a copy of the supplied char array. This is then used to remove any
trailing slashes from cgit_query_path.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 23 insertions, 1 deletions

diff --git a/shared.c b/shared.c
index ab00bc9..45db735 100644
--- a/shared.c
+++ b/shared.c
@@ -228,7 +228,7 @@ void cgit_querystring_cb(const char *name, const char *value)
         } else if (!strcmp(name, "ofs")) {
                 cgit_query_ofs = atoi(value);
         } else if (!strcmp(name, "path")) {
-                cgit_query_path = xstrdup(value);
+                cgit_query_path = trim_end(value, '/');
         } else if (!strcmp(name, "name")) {
                 cgit_query_name = xstrdup(value);
         }
@@ -257,6 +257,28 @@ int hextoint(char c)
                 return -1;
 }
 
+char *trim_end(const char *str, char c)
+{
+        int len;
+        char *s, *t;
+
+        if (str == NULL)
+                return NULL;
+        t = (char *)str;
+        len = strlen(t);
+        while(len > 0 && t[len - 1] == c)
+                len--;
+
+        if (len == 0)
+                return NULL;
+
+        c = t[len];
+        t[len] = '\0';
+        s = xstrdup(t);
+        t[len] = c;
+        return s;
+}
+
 void cgit_diff_tree_cb(struct diff_queue_struct *q,
                        struct diff_options *options, void *data)
 {