int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
{
char *out;
int len;
if (same_encoding(from, to))
return 0;
out = reencode_string_len(sb->buf, sb->len, to, from, &len);
if (!out)
return -1;
strbuf_attach(sb, out, len, len);
return 0;
}
void format_commit_message(const struct commit *commit,
const char *format, struct strbuf *sb,
const struct pretty_print_context *pretty_ctx)
{
struct format_commit_context context;
const char *output_enc = pretty_ctx->output_encoding;
const char *utf8 = "UTF-8";
memset(&context, 0, sizeof(context));
context.commit = commit;
context.pretty_ctx = pretty_ctx;
context.wrap_start = sb->len;
/*
* convert a commit message to UTF-8 first
* as far as 'format_commit_item' assumes it in UTF-8
*/
context.message = logmsg_reencode(commit,
&context.commit_encoding,
utf8);
strbuf_expand(sb, format, format_commit_item, &context);
rewrap_message_tail(sb, &context, 0, 0, 0);
/* then convert a commit message to an actual output encoding */
if (output_enc) {
if (same_encoding(utf8, output_enc))
output_enc = NULL;
} else {
if (context.commit_encoding &&
!same_encoding(context.commit_encoding, utf8))
output_enc = context.commit_encoding;
}
if (output_enc) {
int outsz;
char *out = reencode_string_len(sb->buf, sb->len,
output_enc, utf8, &outsz);
if (out)
strbuf_attach(sb, out, outsz, outsz + 1);
}
free(context.commit_encoding);
unuse_commit_buffer(commit, context.message);
free(context.signature_check.gpg_output);
free(context.signature_check.signer);
}
