url.c: "<scheme>://" part at the beginning should not be URL decoded

When using the protocol git+ssh:// for example we do not want to
decode the '+' as a space. The url decoding must take place only
for the server name and parameters.

This fixes a regression introduced in 9d2e942.

Initial-fix-by: Pascal Obry <pascal.obry@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/url.c b/url.c
index cd32b927a4caaa141a56e415ac42c7a52d40e8ee..bf5bb9c88f751be2dd22bc49bcd9d53812cc5b94 100644 (file)
--- a/url.c
+++ b/url.c
@@ -67,12 +67,10 @@ static int url_decode_char(const char *q)
        return val;
 }
 
-static char *url_decode_internal(const char **query, const char *stop_at)
+static char *url_decode_internal(const char **query, const char *stop_at, struct strbuf *out)
 {
        const char *q = *query;
-       struct strbuf out;
 
-       strbuf_init(&out, 16);
        do {
                unsigned char c = *q;
 
@@ -86,33 +84,43 @@ static char *url_decode_internal(const char **query, const char *stop_at)
                if (c == '%') {
                        int val = url_decode_char(q + 1);
                        if (0 <= val) {
-                               strbuf_addch(&out, val);
+                               strbuf_addch(out, val);
                                q += 3;
                                continue;
                        }
                }
 
                if (c == '+')
-                       strbuf_addch(&out, ' ');
+                       strbuf_addch(out, ' ');
                else
-                       strbuf_addch(&out, c);
+                       strbuf_addch(out, c);
                q++;
        } while (1);
        *query = q;
-       return strbuf_detach(&out, NULL);
+       return strbuf_detach(out, NULL);
 }
 
 char *url_decode(const char *url)
 {
-       return url_decode_internal(&url, NULL);
+       struct strbuf out = STRBUF_INIT;
+       const char *slash = strchr(url, '/');
+
+       /* Skip protocol part if present */
+       if (slash && url < slash) {
+               strbuf_add(&out, url, slash - url);
+               url = slash;
+       }
+       return url_decode_internal(&url, NULL, &out);
 }
 
 char *url_decode_parameter_name(const char **query)
 {
-       return url_decode_internal(query, "&=");
+       struct strbuf out = STRBUF_INIT;
+       return url_decode_internal(query, "&=", &out);
 }
 
 char *url_decode_parameter_value(const char **query)
 {
-       return url_decode_internal(query, "&");
+       struct strbuf out = STRBUF_INIT;
+       return url_decode_internal(query, "&", &out);
 }