Add iconv_msg function.

diff --git a/parsing.c b/parsing.c
index 16b4db798a46adafba0cd8349748783e4d076395..f156c12b7ef6e8ce76a6e844db5ba530e2bc4a56 100644 (file)
--- a/parsing.c
+++ b/parsing.c
@@ -6,6 +6,8 @@
  *   (see COPYING for full license text)
  */
 
+#include <iconv.h>
+
 #include "cgit.h"
 
 int next_char(FILE *f)
@@ -176,6 +178,62 @@ void cgit_parse_url(const char *url)
        }
 }
 
+static char *iconv_msg(char *msg, const char *encoding)
+{
+       iconv_t msg_conv = iconv_open(PAGE_ENCODING, encoding);
+       size_t inlen = strlen(msg);
+       char *in;
+       char *out;
+       size_t inleft;
+       size_t outleft;
+       char *buf;
+       char *ret;
+       size_t buf_sz;
+       int again, fail;
+
+       if(msg_conv == (iconv_t)-1)
+               return NULL;
+
+       buf_sz = inlen * 2;
+       buf = xmalloc(buf_sz+1);
+       do {
+               in = msg;
+               inleft = inlen;
+
+               out = buf;
+               outleft = buf_sz;
+               iconv(msg_conv, &in, &inleft, &out, &outleft);
+
+               if(inleft == 0) {
+                       fail = 0;
+                       again = 0;
+               } else if(inleft != 0 && errno == E2BIG) {
+                       fail = 0;
+                       again = 1;
+
+                       buf_sz *= 2;
+                       free(buf);
+                       buf = xmalloc(buf_sz+1);
+               } else {
+                       fail = 1;
+                       again = 0;
+               }
+       } while(again && !fail);
+
+       if(fail) {
+               free(buf);
+               ret = NULL;
+       } else {
+               buf = xrealloc(buf, out - buf);
+               *out = 0;
+               ret = buf;
+       }
+
+       iconv_close(msg_conv);
+
+       return ret;
+}
+
 char *substr(const char *head, const char *tail)
 {
        char *buf;