diff options
Diffstat (limited to 'builtin-mailinfo.c')
| -rw-r--r-- | builtin-mailinfo.c | 109 |
1 files changed, 94 insertions, 15 deletions
diff --git a/builtin-mailinfo.c b/builtin-mailinfo.c index 92637ac0ba..c90cd312ac 100644 --- a/builtin-mailinfo.c +++ b/builtin-mailinfo.c @@ -25,6 +25,7 @@ static enum { static struct strbuf charset = STRBUF_INIT; static int patch_lines; static struct strbuf **p_hdr_data, **s_hdr_data; +static int use_scissors; #define MAX_HDR_PARSED 10 #define MAX_BOUNDARIES 5 @@ -712,6 +713,56 @@ static inline int patchbreak(const struct strbuf *line) return 0; } +static int is_scissors_line(const struct strbuf *line) +{ + size_t i, len = line->len; + int scissors = 0, gap = 0; + int first_nonblank = -1; + int last_nonblank = 0, visible, perforation = 0, in_perforation = 0; + const char *buf = line->buf; + + for (i = 0; i < len; i++) { + if (isspace(buf[i])) { + if (in_perforation) { + perforation++; + gap++; + } + continue; + } + last_nonblank = i; + if (first_nonblank < 0) + first_nonblank = i; + if (buf[i] == '-') { + in_perforation = 1; + perforation++; + continue; + } + if (i + 1 < len && + (!memcmp(buf + i, ">8", 2) || !memcmp(buf + i, "8<", 2))) { + in_perforation = 1; + perforation += 2; + scissors += 2; + i++; + continue; + } + in_perforation = 0; + } + + /* + * The mark must be at least 8 bytes long (e.g. "-- >8 --"). + * Even though there can be arbitrary cruft on the same line + * (e.g. "cut here"), in order to avoid misidentification, the + * perforation must occupy more than a third of the visible + * width of the line, and dashes and scissors must occupy more + * than half of the perforation. + */ + + visible = last_nonblank - first_nonblank + 1; + return (scissors && 8 <= visible && + visible < perforation * 3 && + gap * 2 < perforation); +} + static int handle_commit_msg(struct strbuf *line) { static int still_looking = 1; @@ -723,7 +774,8 @@ static int handle_commit_msg(struct strbuf *line) strbuf_ltrim(line); if (!line->len) return 0; - if ((still_looking = check_header(line, s_hdr_data, 0)) != 0) + still_looking = check_header(line, s_hdr_data, 0); + if (still_looking) return 0; } @@ -731,6 +783,26 @@ static int handle_commit_msg(struct strbuf *line) if (metainfo_charset) convert_to_utf8(line, charset.buf); + if (use_scissors && is_scissors_line(line)) { + int i; + if (fseek(cmitmsg, 0L, SEEK_SET)) + die_errno("Could not rewind output message file"); + if (ftruncate(fileno(cmitmsg), 0)) + die_errno("Could not truncate output message file at scissors"); + still_looking = 1; + + /* + * We may have already read "secondary headers"; purge + * them to give ourselves a clean restart. + */ + for (i = 0; header[i]; i++) { + if (s_hdr_data[i]) + strbuf_release(s_hdr_data[i]); + s_hdr_data[i] = NULL; + } + return 0; + } + if (patchbreak(line)) { fclose(cmitmsg); cmitmsg = NULL; @@ -765,7 +837,6 @@ static void handle_filter(struct strbuf *line) static void handle_body(void) { - int len = 0; struct strbuf prev = STRBUF_INIT; /* Skip up to the first boundary */ @@ -775,8 +846,6 @@ static void handle_body(void) } do { - strbuf_setlen(&line, line.len + len); - /* process any boundary lines */ if (*content_top && is_multipart_boundary(&line)) { /* flush any leftover */ @@ -832,10 +901,7 @@ static void handle_body(void) handle_filter(&line); } - strbuf_reset(&line); - if (strbuf_avail(&line) < 100) - strbuf_grow(&line, 100); - } while ((len = read_line_with_nul(line.buf, strbuf_avail(&line), fin))); + } while (!strbuf_getwholeline(&line, fin, '\n')); handle_body_out: strbuf_release(&prev); @@ -891,12 +957,9 @@ static void handle_info(void) fprintf(fout, "\n"); } -static int mailinfo(FILE *in, FILE *out, int ks, const char *encoding, - const char *msg, const char *patch) +static int mailinfo(FILE *in, FILE *out, const char *msg, const char *patch) { int peek; - keep_subject = ks; - metainfo_charset = encoding; fin = in; fout = out; @@ -930,8 +993,20 @@ static int mailinfo(FILE *in, FILE *out, int ks, const char *encoding, return 0; } +static int git_mailinfo_config(const char *var, const char *value, void *unused) +{ + if (prefixcmp(var, "mailinfo.")) + return git_default_config(var, value, unused); + if (!strcmp(var, "mailinfo.scissors")) { + use_scissors = git_config_bool(var, value); + return 0; + } + /* perhaps others here */ + return 0; +} + static const char mailinfo_usage[] = - "git mailinfo [-k] [-u | --encoding=<encoding> | -n] msg patch <mail >info"; + "git mailinfo [-k] [-u | --encoding=<encoding> | -n] [--scissors | --no-scissors] msg patch < mail >info"; int cmd_mailinfo(int argc, const char **argv, const char *prefix) { @@ -940,7 +1015,7 @@ int cmd_mailinfo(int argc, const char **argv, const char *prefix) /* NEEDSWORK: might want to do the optional .git/ directory * discovery */ - git_config(git_default_config, NULL); + git_config(git_mailinfo_config, NULL); def_charset = (git_commit_encoding ? git_commit_encoding : "UTF-8"); metainfo_charset = def_charset; @@ -954,6 +1029,10 @@ int cmd_mailinfo(int argc, const char **argv, const char *prefix) metainfo_charset = NULL; else if (!prefixcmp(argv[1], "--encoding=")) metainfo_charset = argv[1] + 11; + else if (!strcmp(argv[1], "--scissors")) + use_scissors = 1; + else if (!strcmp(argv[1], "--no-scissors")) + use_scissors = 0; else usage(mailinfo_usage); argc--; argv++; @@ -962,5 +1041,5 @@ int cmd_mailinfo(int argc, const char **argv, const char *prefix) if (argc != 3) usage(mailinfo_usage); - return !!mailinfo(stdin, stdout, keep_subject, metainfo_charset, argv[1], argv[2]); + return !!mailinfo(stdin, stdout, argv[1], argv[2]); } |