mailinfo: move metainfo_charset to struct mailinfo

This requires us to pass the struct down to decode_header() and
convert_to_utf8() callchain.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/mailinfo.c b/builtin/mailinfo.c
index 7531b3df3bc49c8711f4303eea7a021fbbb26df9..0b49bf6a1a5a7c36ececef42a4f421a82f9bdf76 100644 (file)
--- a/builtin/mailinfo.c
+++ b/builtin/mailinfo.c
@@ -9,8 +9,6 @@
 
 static FILE *cmitmsg, *patchfile;
 
-static const char *metainfo_charset;
-
 struct mailinfo {
        FILE *input;
        FILE *output;
@@ -22,6 +20,7 @@ struct mailinfo {
        int add_message_id;
        int use_scissors;
        int use_inbody_headers;
+       const char *metainfo_charset;
 
        char *message_id;
        int patch_lines;
@@ -380,23 +379,24 @@ static struct strbuf *decode_b_segment(const struct strbuf *b_seg)
        return out;
 }
 
-static void convert_to_utf8(struct strbuf *line, const char *charset)
+static void convert_to_utf8(struct mailinfo *mi,
+                           struct strbuf *line, const char *charset)
 {
        char *out;
 
        if (!charset || !*charset)
                return;
 
-       if (same_encoding(metainfo_charset, charset))
+       if (same_encoding(mi->metainfo_charset, charset))
                return;
-       out = reencode_string(line->buf, metainfo_charset, charset);
+       out = reencode_string(line->buf, mi->metainfo_charset, charset);
        if (!out)
                die("cannot convert from %s to %s",
-                   charset, metainfo_charset);
+                   charset, mi->metainfo_charset);
        strbuf_attach(line, out, strlen(out), strlen(out));
 }
 
-static void decode_header(struct strbuf *it)
+static void decode_header(struct mailinfo *mi, struct strbuf *it)
 {
        char *in, *ep, *cp;
        struct strbuf outbuf = STRBUF_INIT, *dec;
@@ -459,8 +459,8 @@ static void decode_header(struct strbuf *it)
                        dec = decode_q_segment(&piecebuf, 1);
                        break;
                }
-               if (metainfo_charset)
-                       convert_to_utf8(dec, charset_q.buf);
+               if (mi->metainfo_charset)
+                       convert_to_utf8(mi, dec, charset_q.buf);
 
                strbuf_addbuf(&outbuf, dec);
                strbuf_release(dec);
@@ -491,7 +491,7 @@ static int check_header(struct mailinfo *mi,
                         * normalize the meta information to utf8.
                         */
                        strbuf_add(&sb, line->buf + len + 2, line->len - len - 2);
-                       decode_header(&sb);
+                       decode_header(mi, &sb);
                        handle_header(&hdr_data[i], &sb);
                        ret = 1;
                        goto check_header_out;
@@ -502,7 +502,7 @@ static int check_header(struct mailinfo *mi,
        if (cmp_header(line, "Content-Type")) {
                len = strlen("Content-Type: ");
                strbuf_add(&sb, line->buf + len, line->len - len);
-               decode_header(&sb);
+               decode_header(mi, &sb);
                strbuf_insert(&sb, 0, "Content-Type: ", len);
                handle_content_type(&sb);
                ret = 1;
@@ -511,7 +511,7 @@ static int check_header(struct mailinfo *mi,
        if (cmp_header(line, "Content-Transfer-Encoding")) {
                len = strlen("Content-Transfer-Encoding: ");
                strbuf_add(&sb, line->buf + len, line->len - len);
-               decode_header(&sb);
+               decode_header(mi, &sb);
                handle_content_transfer_encoding(&sb);
                ret = 1;
                goto check_header_out;
@@ -519,7 +519,7 @@ static int check_header(struct mailinfo *mi,
        if (cmp_header(line, "Message-Id")) {
                len = strlen("Message-Id: ");
                strbuf_add(&sb, line->buf + len, line->len - len);
-               decode_header(&sb);
+               decode_header(mi, &sb);
                handle_message_id(mi, &sb);
                ret = 1;
                goto check_header_out;
@@ -674,8 +674,8 @@ static int handle_commit_msg(struct mailinfo *mi, struct strbuf *line)
                mi->header_stage = 0;
 
        /* normalize the log message to UTF-8. */
-       if (metainfo_charset)
-               convert_to_utf8(line, charset.buf);
+       if (mi->metainfo_charset)
+               convert_to_utf8(mi, line, charset.buf);
 
        if (mi->use_scissors && is_scissors_line(line)) {
                int i;
@@ -1052,7 +1052,7 @@ int cmd_mailinfo(int argc, const char **argv, const char *prefix)
        setup_mailinfo(&mi);
 
        def_charset = get_commit_output_encoding();
-       metainfo_charset = def_charset;
+       mi.metainfo_charset = def_charset;
 
        while (1 < argc && argv[1][0] == '-') {
                if (!strcmp(argv[1], "-k"))
@@ -1062,11 +1062,11 @@ int cmd_mailinfo(int argc, const char **argv, const char *prefix)
                else if (!strcmp(argv[1], "-m") || !strcmp(argv[1], "--message-id"))
                        mi.add_message_id = 1;
                else if (!strcmp(argv[1], "-u"))
-                       metainfo_charset = def_charset;
+                       mi.metainfo_charset = def_charset;
                else if (!strcmp(argv[1], "-n"))
-                       metainfo_charset = NULL;
+                       mi.metainfo_charset = NULL;
                else if (starts_with(argv[1], "--encoding="))
-                       metainfo_charset = argv[1] + 11;
+                       mi.metainfo_charset = argv[1] + 11;
                else if (!strcmp(argv[1], "--scissors"))
                        mi.use_scissors = 1;
                else if (!strcmp(argv[1], "--no-scissors"))