From 5963c0367f00df0e5eeb761f1ef77a33c8f54c40 Mon Sep 17 00:00:00 2001
From: Michael Haggerty <mhagger@alum.mit.edu>
Date: Sun, 25 Nov 2012 12:08:34 +0100
Subject: Add new function strbuf_add_xml_quoted()

Substantially the same code is present in http-push.c and imap-send.c,
so make a library function out of it.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 strbuf.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'strbuf.c')

diff --git a/strbuf.c b/strbuf.c
index 0510f76c24..41828f05d8 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -428,6 +428,32 @@ 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) {
-- 
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