From 2d83109aabbb8c660c27cbf03ec67cb88822639f Mon Sep 17 00:00:00 2001 From: Paul Tan Date: Tue, 4 Aug 2015 21:51:38 +0800 Subject: builtin-am: exit with user friendly message on failure 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 Signed-off-by: Junio C Hamano --- builtin/am.c | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/builtin/am.c b/builtin/am.c index 0875e69d55..8b8f2da7f4 100644 --- a/builtin/am.c +++ b/builtin/am.c @@ -83,6 +83,7 @@ struct am_state { /* various operating modes and command line options */ int quiet; + const char *resolvemsg; }; /** @@ -646,6 +647,25 @@ 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, @@ -706,7 +726,7 @@ 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"); @@ -871,7 +891,7 @@ static void am_run(struct am_state *state, int resume) 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); @@ -899,13 +919,13 @@ 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); @@ -1133,6 +1153,8 @@ 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), -- cgit v1.2.1