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Diffstat (limited to 'builtin-mailinfo.c')
-rw-r--r--builtin-mailinfo.c101
1 files changed, 93 insertions, 8 deletions
diff --git a/builtin-mailinfo.c b/builtin-mailinfo.c
index b0b5d8f6cb..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;
@@ -885,12 +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;
@@ -924,8 +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)
{
@@ -934,7 +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;
@@ -948,6 +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++;
@@ -956,5 +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]);
}