upload-pack: share more code

diff --git a/strbuf.c b/strbuf.c
index 05d0693eba1eba4e2f21057388368c0890e668fe..9a373bef70b7fdd434c02d1ca753fcc8f799ecc2 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -425,6 +425,32 @@ void strbuf_add_lines(struct strbuf *out, const char *prefix,
        strbuf_complete_line(out);
 }
 
+void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
+{
+       while (*s) {
+               size_t len = strcspn(s, "\"<>&");
+               strbuf_add(buf, s, len);
+               s += len;
+               switch (*s) {
+               case '"':
+                       strbuf_addstr(buf, "&quot;");
+                       break;
+               case '<':
+                       strbuf_addstr(buf, "&lt;");
+                       break;
+               case '>':
+                       strbuf_addstr(buf, "&gt;");
+                       break;
+               case '&':
+                       strbuf_addstr(buf, "&amp;");
+                       break;
+               case 0:
+                       return;
+               }
+               s++;
+       }
+}
+
 static int is_rfc3986_reserved(char ch)
 {
        switch (ch) {