From: Christian Couder <christian.couder@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Karsten Blees" <karsten.blees@gmail.com>,
"Nguyen Thai Ngoc Duy" <pclouds@gmail.com>,
"Stefan Beller" <sbeller@google.com>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"Ramsay Jones" <ramsay@ramsayjones.plus.com>,
"Johannes Sixt" <j6t@kdbg.org>, "René Scharfe" <l.s.r@web.de>,
"Stefan Naewe" <stefan.naewe@atlas-elektronik.com>,
"Christian Couder" <chriscool@tuxfamily.org>
Subject: [PATCH v14 03/41] builtin/apply: make apply_patch() return -1 or -128 instead of die()ing
Date: Sun, 4 Sep 2016 22:17:55 +0200 [thread overview]
Message-ID: <20160904201833.21676-4-chriscool@tuxfamily.org> (raw)
In-Reply-To: <20160904201833.21676-1-chriscool@tuxfamily.org>
To libify `git apply` functionality we have to signal errors
to the caller instead of die()ing.
As a first step in this direction, let's make apply_patch() return
-1 or -128 in case of errors instead of dying. For now its only
caller apply_all_patches() will exit(128) when apply_patch()
return -128 and it will exit(1) when it returns -1.
We exit() with code 128 because that was what die() was doing
and we want to keep the distinction between exiting with code 1
and exiting with code 128.
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
builtin/apply.c | 60 ++++++++++++++++++++++++++++++++++++++++++---------------
1 file changed, 45 insertions(+), 15 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index ed923ca..435030a 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -4404,6 +4404,15 @@ static struct lock_file lock_file;
#define INACCURATE_EOF (1<<0)
#define RECOUNT (1<<1)
+/*
+ * Try to apply a patch.
+ *
+ * Returns:
+ * -128 if a bad error happened (like patch unreadable)
+ * -1 if patch did not apply and user cannot deal with it
+ * 0 if the patch applied
+ * 1 if the patch did not apply but user might fix it
+ */
static int apply_patch(struct apply_state *state,
int fd,
const char *filename,
@@ -4413,6 +4422,7 @@ static int apply_patch(struct apply_state *state,
struct strbuf buf = STRBUF_INIT; /* owns the patch text */
struct patch *list = NULL, **listp = &list;
int skipped_patch = 0;
+ int res = 0;
state->patch_input_file = filename;
read_patch_file(&buf, fd);
@@ -4445,8 +4455,11 @@ static int apply_patch(struct apply_state *state,
offset += nr;
}
- if (!list && !skipped_patch)
- die(_("unrecognized input"));
+ if (!list && !skipped_patch) {
+ error(_("unrecognized input"));
+ res = -128;
+ goto end;
+ }
if (state->whitespace_error && (state->ws_error_action == die_on_ws_error))
state->apply = 0;
@@ -4455,21 +4468,23 @@ static int apply_patch(struct apply_state *state,
if (state->update_index && state->newfd < 0)
state->newfd = hold_locked_index(state->lock_file, 1);
- if (state->check_index) {
- if (read_cache() < 0)
- die(_("unable to read index file"));
+ if (state->check_index && read_cache() < 0) {
+ error(_("unable to read index file"));
+ res = -128;
+ goto end;
}
if ((state->check || state->apply) &&
check_patch_list(state, list) < 0 &&
- !state->apply_with_reject)
- exit(1);
+ !state->apply_with_reject) {
+ res = -1;
+ goto end;
+ }
if (state->apply && write_out_results(state, list)) {
- if (state->apply_with_reject)
- exit(1);
/* with --3way, we still need to write the index out */
- return 1;
+ res = state->apply_with_reject ? -1 : 1;
+ goto end;
}
if (state->fake_ancestor)
@@ -4484,10 +4499,11 @@ static int apply_patch(struct apply_state *state,
if (state->summary)
summary_patch_list(list);
+end:
free_patch_list(list);
strbuf_release(&buf);
string_list_clear(&state->fn_table, 0);
- return 0;
+ return res;
}
static void git_apply_config(void)
@@ -4628,6 +4644,7 @@ static int apply_all_patches(struct apply_state *state,
int options)
{
int i;
+ int res;
int errs = 0;
int read_stdin = 1;
@@ -4636,7 +4653,10 @@ static int apply_all_patches(struct apply_state *state,
int fd;
if (!strcmp(arg, "-")) {
- errs |= apply_patch(state, 0, "<stdin>", options);
+ res = apply_patch(state, 0, "<stdin>", options);
+ if (res < 0)
+ goto end;
+ errs |= res;
read_stdin = 0;
continue;
} else if (0 < state->prefix_length)
@@ -4649,12 +4669,19 @@ static int apply_all_patches(struct apply_state *state,
die_errno(_("can't open patch '%s'"), arg);
read_stdin = 0;
set_default_whitespace_mode(state);
- errs |= apply_patch(state, fd, arg, options);
+ res = apply_patch(state, fd, arg, options);
+ if (res < 0)
+ goto end;
+ errs |= res;
close(fd);
}
set_default_whitespace_mode(state);
- if (read_stdin)
- errs |= apply_patch(state, 0, "<stdin>", options);
+ if (read_stdin) {
+ res = apply_patch(state, 0, "<stdin>", options);
+ if (res < 0)
+ goto end;
+ errs |= res;
+ }
if (state->whitespace_error) {
if (state->squelch_whitespace_errors &&
@@ -4690,6 +4717,9 @@ static int apply_all_patches(struct apply_state *state,
}
return !!errs;
+
+end:
+ exit(res == -1 ? 1 : 128);
}
int cmd_apply(int argc, const char **argv, const char *prefix)
--
2.10.0.41.g9df52c3
next prev parent reply other threads:[~2016-09-04 20:19 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-04 20:17 [PATCH v14 00/41] libify apply and use lib in am, part 2 Christian Couder
2016-09-04 20:17 ` [PATCH v14 01/41] apply: make some names more specific Christian Couder
2016-09-04 20:17 ` [PATCH v14 02/41] apply: move 'struct apply_state' to apply.h Christian Couder
2016-09-04 20:17 ` Christian Couder [this message]
2016-09-04 20:17 ` [PATCH v14 04/41] builtin/apply: read_patch_file() return -1 instead of die()ing Christian Couder
2016-09-04 20:17 ` [PATCH v14 05/41] builtin/apply: make find_header() return -128 " Christian Couder
2016-09-04 20:17 ` [PATCH v14 06/41] builtin/apply: make parse_chunk() return a negative integer on error Christian Couder
2016-09-04 20:17 ` [PATCH v14 07/41] builtin/apply: make parse_single_patch() return -1 " Christian Couder
2016-09-04 20:18 ` [PATCH v14 08/41] builtin/apply: make parse_whitespace_option() return -1 instead of die()ing Christian Couder
2016-09-04 20:18 ` [PATCH v14 09/41] builtin/apply: make parse_ignorewhitespace_option() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 10/41] builtin/apply: move init_apply_state() to apply.c Christian Couder
2016-09-04 20:18 ` [PATCH v14 11/41] apply: make init_apply_state() return -1 instead of exit()ing Christian Couder
2016-09-04 20:18 ` [PATCH v14 12/41] builtin/apply: make check_apply_state() return -1 instead of die()ing Christian Couder
2016-09-04 20:18 ` [PATCH v14 13/41] builtin/apply: move check_apply_state() to apply.c Christian Couder
2016-09-04 20:18 ` [PATCH v14 14/41] builtin/apply: make apply_all_patches() return 128 or 1 on error Christian Couder
2016-09-04 20:18 ` [PATCH v14 15/41] builtin/apply: make parse_traditional_patch() return -1 " Christian Couder
2016-09-04 20:18 ` [PATCH v14 16/41] builtin/apply: make gitdiff_*() return 1 at end of header Christian Couder
2016-09-04 20:18 ` [PATCH v14 17/41] builtin/apply: make gitdiff_*() return -1 on error Christian Couder
2016-09-04 20:18 ` [PATCH v14 18/41] builtin/apply: change die_on_unsafe_path() to check_unsafe_path() Christian Couder
2016-09-04 20:18 ` [PATCH v14 19/41] builtin/apply: make build_fake_ancestor() return -1 on error Christian Couder
2016-09-04 20:18 ` [PATCH v14 20/41] builtin/apply: make remove_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 21/41] builtin/apply: make add_conflicted_stages_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 22/41] builtin/apply: make add_index_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 23/41] builtin/apply: make create_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 24/41] builtin/apply: make write_out_one_result() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 25/41] builtin/apply: make write_out_results() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 26/41] builtin/apply: make try_create_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 27/41] builtin/apply: make create_one_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 28/41] builtin/apply: rename option parsing functions Christian Couder
2016-09-04 20:18 ` [PATCH v14 29/41] apply: rename and move opt constants to apply.h Christian Couder
2016-09-04 20:18 ` [PATCH v14 31/41] apply: make some parsing functions static again Christian Couder
2016-09-04 20:18 ` [PATCH v14 32/41] apply: use error_errno() where possible Christian Couder
2016-09-04 20:18 ` [PATCH v14 33/41] apply: make it possible to silently apply Christian Couder
2016-09-04 20:18 ` [PATCH v14 34/41] apply: don't print on stdout in verbosity_silent mode Christian Couder
2016-09-04 20:18 ` [PATCH v14 35/41] usage: add set_warn_routine() Christian Couder
2016-09-04 20:18 ` [PATCH v14 36/41] usage: add get_error_routine() and get_warn_routine() Christian Couder
2016-09-04 20:18 ` [PATCH v14 37/41] apply: change error_routine when silent Christian Couder
2016-09-04 20:18 ` [PATCH v14 38/41] apply: refactor `git apply` option parsing Christian Couder
2016-09-04 20:18 ` [PATCH v14 39/41] apply: pass apply state to build_fake_ancestor() Christian Couder
2016-09-04 20:18 ` [PATCH v14 40/41] apply: learn to use a different index file Christian Couder
2016-09-04 20:18 ` [PATCH v14 41/41] builtin/am: use apply API in run_apply() Christian Couder
[not found] ` <20160904201833.21676-31-chriscool@tuxfamily.org>
2016-09-06 18:29 ` [PATCH v14 30/41] Move libified code from builtin/apply.c to apply.{c,h} Stefan Beller
2016-09-06 18:54 ` [PATCH v14 00/41] libify apply and use lib in am, part 2 Stefan Beller
2016-09-07 19:51 ` Junio C Hamano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160904201833.21676-4-chriscool@tuxfamily.org \
--to=christian.couder@gmail.com \
--cc=avarab@gmail.com \
--cc=chriscool@tuxfamily.org \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=j6t@kdbg.org \
--cc=karsten.blees@gmail.com \
--cc=l.s.r@web.de \
--cc=pclouds@gmail.com \
--cc=peff@peff.net \
--cc=ramsay@ramsayjones.plus.com \
--cc=sbeller@google.com \
--cc=stefan.naewe@atlas-elektronik.com \
--cc=sunshine@sunshineco.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).