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From: Paul Tan <pyokagan@gmail.com>
To: git@vger.kernel.org
Cc: Johannes Schindelin <johannes.schindelin@gmx.de>,
	Stefan Beller <sbeller@google.com>, Paul Tan <pyokagan@gmail.com>
Subject: [PATCH v4 16/44] builtin-am: exit with user friendly message on failure
Date: Sun, 28 Jun 2015 22:05:38 +0800	[thread overview]
Message-ID: <1435500366-31700-17-git-send-email-pyokagan@gmail.com> (raw)
In-Reply-To: <1435500366-31700-1-git-send-email-pyokagan@gmail.com>

Since ced9456 (Give the user a hint for how to continue in the case that
git-am fails because it requires user intervention, 2006-05-02), git-am
prints additional information on how the user can re-invoke git-am to
resume patch application after resolving the failure. Re-implement this
through the die_user_resolve() function.

Since cc12005 (Make git rebase interactive help match documentation.,
2006-05-13), git-am supports the --resolvemsg option which is used by
git-rebase to override the message printed out when git-am fails.
Re-implement this option.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
---
 builtin/am.c | 32 ++++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/builtin/am.c b/builtin/am.c
index 2643b04..7832ecf 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -82,6 +82,9 @@ struct am_state {
 	int prec;
 
 	int quiet;
+
+	/* override error message when patch failure occurs */
+	const char *resolvemsg;
 };
 
 /**
@@ -674,6 +677,25 @@ static int index_has_changes(struct strbuf *sb)
 }
 
 /**
+ * Dies with a user-friendly message on how to proceed after resolving the
+ * problem. This message can be overridden with state->resolvemsg.
+ */
+static void NORETURN die_user_resolve(const struct am_state *state)
+{
+	if (state->resolvemsg) {
+		printf_ln("%s", state->resolvemsg);
+	} else {
+		const char *cmdline = "git am";
+
+		printf_ln(_("When you have resolved this problem, run \"%s --continue\"."), cmdline);
+		printf_ln(_("If you prefer to skip this patch, run \"%s --skip\" instead."), cmdline);
+		printf_ln(_("To restore the original branch and stop patching, run \"%s --abort\"."), cmdline);
+	}
+
+	exit(128);
+}
+
+/**
  * Parses `mail` using git-mailinfo, extracting its patch and authorship info.
  * state->msg will be set to the patch message. state->author_name,
  * state->author_email and state->author_date will be set to the patch author's
@@ -733,7 +755,7 @@ static int parse_mail(struct am_state *state, const char *mail)
 
 	if (is_empty_file(am_path(state, "patch"))) {
 		printf_ln(_("Patch is empty. Was it split wrong?"));
-		exit(128);
+		die_user_resolve(state);
 	}
 
 	strbuf_addstr(&msg, "\n\n");
@@ -874,7 +896,7 @@ static void am_run(struct am_state *state)
 				printf_ln(_("The copy of the patch that failed is found in: %s"),
 						am_path(state, "patch"));
 
-			exit(128);
+			die_user_resolve(state);
 		}
 
 		do_commit(state);
@@ -908,13 +930,13 @@ static void am_resolve(struct am_state *state)
 		printf_ln(_("No changes - did you forget to use 'git add'?\n"
 			"If there is nothing left to stage, chances are that something else\n"
 			"already introduced the same changes; you might want to skip this patch."));
-		exit(128);
+		die_user_resolve(state);
 	}
 
 	if (unmerged_cache()) {
 		printf_ln(_("You still have unmerged paths in your index.\n"
 			"Did you forget to use 'git add'?"));
-		exit(128);
+		die_user_resolve(state);
 	}
 
 	do_commit(state);
@@ -1138,6 +1160,8 @@ int cmd_am(int argc, const char **argv, const char *prefix)
 		OPT_CALLBACK(0, "patch-format", &patch_format, N_("format"),
 			N_("format the patch(es) are in"),
 			parse_opt_patchformat),
+		OPT_STRING(0, "resolvemsg", &state.resolvemsg, NULL,
+			N_("override error message when patch failure occurs")),
 		OPT_CMDMODE(0, "continue", &resume,
 			N_("continue applying patches after resolving a conflict"),
 			RESUME_RESOLVED),
-- 
2.5.0.rc0.76.gb2c6e93

  parent reply	other threads:[~2015-06-28 14:08 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-28 14:05 [PATCH v4 00/44] Make git-am a builtin Paul Tan
2015-06-28 14:05 ` [PATCH v4 01/44] wrapper: implement xopen() Paul Tan
2015-06-29  4:48   ` Torsten Bögershausen
2015-06-29  5:04     ` Stefan Beller
2015-06-29 17:18     ` Junio C Hamano
2015-07-01  6:05       ` Paul Tan
2015-07-01  6:04     ` Paul Tan
2015-06-28 14:05 ` [PATCH v4 02/44] wrapper: implement xfopen() Paul Tan
2015-06-28 14:05 ` [PATCH v4 03/44] builtin-am: implement skeletal builtin am Paul Tan
2015-06-28 14:05 ` [PATCH v4 04/44] builtin-am: implement patch queue mechanism Paul Tan
2015-06-29  5:08   ` Stefan Beller
2015-07-07 12:50     ` Paul Tan
2015-06-28 14:05 ` [PATCH v4 05/44] builtin-am: split out mbox/maildir patches with git-mailsplit Paul Tan
2015-06-28 14:05 ` [PATCH v4 06/44] builtin-am: auto-detect mbox patches Paul Tan
2015-06-28 14:05 ` [PATCH v4 07/44] builtin-am: extract patch and commit info with git-mailinfo Paul Tan
2015-06-28 14:05 ` [PATCH v4 08/44] builtin-am: apply patch with git-apply Paul Tan
2015-06-28 14:05 ` [PATCH v4 09/44] builtin-am: implement committing applied patch Paul Tan
2015-06-28 14:05 ` [PATCH v4 10/44] builtin-am: refuse to apply patches if index is dirty Paul Tan
2015-06-28 14:05 ` [PATCH v4 11/44] builtin-am: implement --resolved/--continue Paul Tan
2015-06-28 14:05 ` [PATCH v4 12/44] builtin-am: implement --skip Paul Tan
2015-06-28 14:05 ` [PATCH v4 13/44] builtin-am: implement --abort Paul Tan
2015-06-28 14:05 ` [PATCH v4 14/44] builtin-am: reject patches when there's a session in progress Paul Tan
2015-06-28 14:05 ` [PATCH v4 15/44] builtin-am: implement -q/--quiet, GIT_QUIET Paul Tan
2015-06-28 14:05 ` Paul Tan [this message]
2015-06-28 14:05 ` [PATCH v4 17/44] builtin-am: implement -s/--signoff Paul Tan
2015-06-28 14:05 ` [PATCH v4 18/44] cache-tree: introduce write_index_as_tree() Paul Tan
2015-06-28 14:05 ` [PATCH v4 19/44] builtin-am: implement --3way, am.threeway Paul Tan
2015-06-30  0:18   ` Stefan Beller
2015-06-28 14:05 ` [PATCH v4 20/44] builtin-am: implement --rebasing mode Paul Tan
2015-06-28 14:05 ` [PATCH v4 21/44] builtin-am: bypass git-mailinfo when --rebasing Paul Tan
2015-06-28 14:05 ` [PATCH v4 22/44] builtin-am: handle stray state directory Paul Tan
2015-06-28 14:05 ` [PATCH v4 23/44] builtin-am: implement -u/--utf8 Paul Tan
2015-06-28 14:05 ` [PATCH v4 24/44] builtin-am: implement -k/--keep, --keep-non-patch Paul Tan
2015-06-28 14:05 ` [PATCH v4 25/44] builtin-am: implement --[no-]message-id, am.messageid Paul Tan
2015-06-28 14:05 ` [PATCH v4 26/44] builtin-am: support --keep-cr, am.keepcr Paul Tan
2015-06-28 14:05 ` [PATCH v4 27/44] builtin-am: implement --[no-]scissors Paul Tan
2015-07-07  8:23   ` Paul Tan
2015-06-28 14:05 ` [PATCH v4 28/44] builtin-am: pass git-apply's options to git-apply Paul Tan
2015-06-29 23:56   ` Stefan Beller
2015-07-01 10:22     ` Paul Tan
2015-07-01 17:01       ` Stefan Beller
2015-06-28 14:05 ` [PATCH v4 29/44] builtin-am: implement --ignore-date Paul Tan
2015-06-28 14:05 ` [PATCH v4 30/44] builtin-am: implement --committer-date-is-author-date Paul Tan
2015-06-28 14:05 ` [PATCH v4 31/44] builtin-am: implement -S/--gpg-sign, commit.gpgsign Paul Tan
2015-06-29 23:51   ` Stefan Beller
2015-07-01  8:01     ` Paul Tan
2015-07-01 16:43       ` Stefan Beller
2015-06-28 14:05 ` [PATCH v4 32/44] builtin-am: invoke post-rewrite hook Paul Tan
2015-06-28 14:05 ` [PATCH v4 33/44] builtin-am: support automatic notes copying Paul Tan
2015-06-28 14:05 ` [PATCH v4 34/44] builtin-am: invoke applypatch-msg hook Paul Tan
2015-06-28 14:05 ` [PATCH v4 35/44] builtin-am: invoke pre-applypatch hook Paul Tan
2015-06-28 14:05 ` [PATCH v4 36/44] builtin-am: invoke post-applypatch hook Paul Tan
2015-06-28 14:05 ` [PATCH v4 37/44] builtin-am: rerere support Paul Tan
2015-06-28 14:06 ` [PATCH v4 38/44] builtin-am: support and auto-detect StGit patches Paul Tan
2015-06-29 20:42   ` Stefan Beller
2015-06-29 20:51     ` Eric Sunshine
2015-06-29 21:39       ` Junio C Hamano
2015-07-01  7:25         ` Paul Tan
2015-06-28 14:06 ` [PATCH v4 39/44] builtin-am: support and auto-detect StGit series files Paul Tan
2015-06-28 14:06 ` [PATCH v4 40/44] builtin-am: support and auto-detect mercurial patches Paul Tan
2015-06-29 20:32   ` Stefan Beller
2015-06-29 20:32     ` Stefan Beller
2015-07-01  9:07       ` Paul Tan
2015-07-01  8:48     ` Paul Tan
2015-06-28 14:06 ` [PATCH v4 41/44] builtin-am: implement -i/--interactive Paul Tan
2015-06-28 14:06 ` [PATCH v4 42/44] builtin-am: implement legacy -b/--binary option Paul Tan
2015-06-29 20:05   ` Stefan Beller
     [not found]     ` <CABPQNSakaoyNRuNz=bcDYWdy4e2O3M4UuYoOT5JAV1mt-BiAOw@mail.gmail.com>
2015-07-14 10:09       ` Paul Tan
2015-06-28 14:06 ` [PATCH v4 43/44] builtin-am: check for valid committer ident Paul Tan
2015-06-29 20:02   ` Stefan Beller
2015-07-01  6:43     ` Paul Tan
2015-06-28 14:06 ` [PATCH v4 44/44] builtin-am: remove redirection to git-am.sh Paul Tan
2015-06-29  5:01 ` [PATCH v4 00/44] Make git-am a builtin Stefan Beller
2015-06-30  0:19   ` Stefan Beller

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