builtin-am: support --keep-cr, am.keepcr

Since ad2c928 (git-am: Add command line parameter `--keep-cr` passing it
to git-mailsplit, 2010-02-27), git-am.sh supported the --keep-cr option
and would pass it to git-mailsplit.

Since e80d4cb (git-am: Add am.keepcr and --no-keep-cr to override it,
2010-02-27), git-am.sh supported the am.keepcr config setting, which
controls whether --keep-cr is on by default.

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/am.c b/builtin/am.c
index 8e978395b2721f7ab71f07dc38d939722f1ea058..e34bc517ba2f6fd95bd45e621fcc16ca5ab16e5c 100644 (file)
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -502,7 +502,7 @@ static int detect_patch_format(const char **paths)
  * Splits out individual email patches from `paths`, where each path is either
  * a mbox file or a Maildir. Returns 0 on success, -1 on failure.
  */
-static int split_mail_mbox(struct am_state *state, const char **paths)
+static int split_mail_mbox(struct am_state *state, const char **paths, int keep_cr)
 {
        struct child_process cp = CHILD_PROCESS_INIT;
        struct strbuf last = STRBUF_INIT;
@@ -512,6 +512,8 @@ static int split_mail_mbox(struct am_state *state, const char **paths)
        argv_array_pushf(&cp.args, "-d%d", state->prec);
        argv_array_pushf(&cp.args, "-o%s", state->dir);
        argv_array_push(&cp.args, "-b");
+       if (keep_cr)
+               argv_array_push(&cp.args, "--keep-cr");
        argv_array_push(&cp.args, "--");
        argv_array_pushv(&cp.args, paths);
 
@@ -536,14 +538,22 @@ static int split_mail_mbox(struct am_state *state, const char **paths)
  * state->cur will be set to the index of the first mail, and state->last will
  * be set to the index of the last mail.
  *
+ * Set keep_cr to 0 to convert all lines ending with \r\n to end with \n, 1
+ * to disable this behavior, -1 to use the default configured setting.
+ *
  * Returns 0 on success, -1 on failure.
  */
 static int split_mail(struct am_state *state, enum patch_format patch_format,
-                       const char **paths)
+                       const char **paths, int keep_cr)
 {
+       if (keep_cr < 0) {
+               keep_cr = 0;
+               git_config_get_bool("am.keepcr", &keep_cr);
+       }
+
        switch (patch_format) {
        case PATCH_FORMAT_MBOX:
-               return split_mail_mbox(state, paths);
+               return split_mail_mbox(state, paths, keep_cr);
        default:
                die("BUG: invalid patch_format");
        }
@@ -554,7 +564,7 @@ static int split_mail(struct am_state *state, enum patch_format patch_format,
  * Setup a new am session for applying patches
  */
 static void am_setup(struct am_state *state, enum patch_format patch_format,
-                       const char **paths)
+                       const char **paths, int keep_cr)
 {
        unsigned char curr_head[GIT_SHA1_RAWSZ];
        const char *str;
@@ -570,7 +580,7 @@ static void am_setup(struct am_state *state, enum patch_format patch_format,
        if (mkdir(state->dir, 0777) < 0 && errno != EEXIST)
                die_errno(_("failed to create directory '%s'"), state->dir);
 
-       if (split_mail(state, patch_format, paths) < 0) {
+       if (split_mail(state, patch_format, paths, keep_cr) < 0) {
                am_destroy(state);
                die(_("Failed to split patches."));
        }
@@ -1511,6 +1521,7 @@ enum resume_mode {
 int cmd_am(int argc, const char **argv, const char *prefix)
 {
        struct am_state state;
+       int keep_cr = -1;
        int patch_format = PATCH_FORMAT_UNKNOWN;
        enum resume_mode resume = RESUME_FALSE;
 
@@ -1534,6 +1545,12 @@ int cmd_am(int argc, const char **argv, const char *prefix)
                        N_("pass -b flag to git-mailinfo"), KEEP_NON_PATCH),
                OPT_BOOL('m', "message-id", &state.message_id,
                        N_("pass -m flag to git-mailinfo")),
+               { OPTION_SET_INT, 0, "keep-cr", &keep_cr, NULL,
+                 N_("pass --keep-cr flag to git-mailsplit for mbox format"),
+                 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 1},
+               { OPTION_SET_INT, 0, "no-keep-cr", &keep_cr, NULL,
+                 N_("do not pass --keep-cr flag to git-mailsplit independent of am.keepcr"),
+                 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 0},
                OPT_CALLBACK(0, "patch-format", &patch_format, N_("format"),
                        N_("format the patch(es) are in"),
                        parse_opt_patchformat),
@@ -1631,7 +1648,7 @@ int cmd_am(int argc, const char **argv, const char *prefix)
                                argv_array_push(&paths, mkpath("%s/%s", prefix, argv[i]));
                }
 
-               am_setup(&state, patch_format, paths.argv);
+               am_setup(&state, patch_format, paths.argv, keep_cr);
 
                argv_array_clear(&paths);
        }