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>

Michael Haggerty committed Nov 25, 2012 at 12:08 UTC 5963c0367f00df0e5eeb761f1ef77a33c8f54c40
2 files changed +32
strbuf.c
+26
@@ -428,6 +428,32 @@ void strbuf_add_lines(struct strbuf *out, const char *prefix,
428 strbuf_complete_line(out);
429 }
430
431 +void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
432 +{
433 + while (*s) {
434 + size_t len = strcspn(s, "\"<>&");
435 + strbuf_add(buf, s, len);
436 + s += len;
437 + switch (*s) {
438 + case '"':
439 + strbuf_addstr(buf, "&quot;");
440 + break;
441 + case '<':
442 + strbuf_addstr(buf, "&lt;");
443 + break;
444 + case '>':
445 + strbuf_addstr(buf, "&gt;");
446 + break;
447 + case '&':
448 + strbuf_addstr(buf, "&amp;");
449 + break;
450 + case 0:
451 + return;
452 + }
453 + s++;
454 + }
455 +}
456 +
457 static int is_rfc3986_reserved(char ch)
458 {
459 switch (ch) {
strbuf.h
+6
@@ -102,6 +102,12 @@ extern void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap);
102
103 extern void strbuf_add_lines(struct strbuf *sb, const char *prefix, const char *buf, size_t size);
104
105 +/*
106 + * Append s to sb, with the characters '<', '>', '&' and '"' converted
107 + * into XML entities.
108 + */
109 +extern void strbuf_addstr_xml_quoted(struct strbuf *sb, const char *s);
110 +
111 static inline void strbuf_complete_line(struct strbuf *sb)
112 {
113 if (sb->len && sb->buf[sb->len - 1] != '\n')