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authorJunio C Hamano <junkio@cox.net>2006-12-24 07:36:55 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-12-26 08:22:39 (GMT)
commitb45974a655e0e41441e5db64c091000171435096 (patch)
treeeda158daf71b9994b42002b0fe4b50800a4eb789 /utf8.c
parent6934dec89538e054823aadcce08af040bc8dcf79 (diff)
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Move encoding conversion routine out of mailinfo to utf8.c
This moves the body of convert_to_utf8() routine used in mailinfo to the utf8.c i18n library. Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'utf8.c')
-rw-r--r--utf8.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/utf8.c b/utf8.c
index 8fa6257..1eedd8b 100644
--- a/utf8.c
+++ b/utf8.c
@@ -276,3 +276,57 @@ void print_wrapped_text(const char *text, int indent, int indent2, int width)
}
}
}
+
+/*
+ * Given a buffer and its encoding, return it re-encoded
+ * with iconv. If the conversion fails, returns NULL.
+ */
+#ifndef NO_ICONV
+char *reencode_string(const char *in, const char *out_encoding, const char *in_encoding)
+{
+ iconv_t conv;
+ size_t insz, outsz, outalloc;
+ char *out, *outpos, *cp;
+
+ if (!in_encoding)
+ return NULL;
+ conv = iconv_open(out_encoding, in_encoding);
+ if (conv == (iconv_t) -1)
+ return NULL;
+ insz = strlen(in);
+ outsz = insz;
+ outalloc = outsz + 1; /* for terminating NUL */
+ out = xmalloc(outalloc);
+ outpos = out;
+ cp = (char *)in;
+
+ while (1) {
+ size_t cnt = iconv(conv, &cp, &insz, &outpos, &outsz);
+
+ if (cnt == -1) {
+ size_t sofar;
+ if (errno != E2BIG) {
+ free(out);
+ iconv_close(conv);
+ return NULL;
+ }
+ /* insz has remaining number of bytes.
+ * since we started outsz the same as insz,
+ * it is likely that insz is not enough for
+ * converting the rest.
+ */
+ sofar = outpos - out;
+ outalloc = sofar + insz * 2 + 32;
+ out = xrealloc(out, outalloc);
+ outpos = out + sofar;
+ outsz = outalloc - sofar - 1;
+ }
+ else {
+ *outpos = '\0';
+ break;
+ }
+ }
+ iconv_close(conv);
+ return out;
+}
+#endif