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From: Firmin Martin <firminmartin24@gmail.com>
To: Firmin Martin <firminmartin24@gmail.com>, git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
	Johannes Schindelin <johannes.schindelin@gmail.com>,
	Erik Faye-Lund <kusmabite@gmail.com>,
	Denton Liu <liu.denton@gmail.com>
Subject: [PATCH v1 2/8] format-patch: confirmation whenever patches exist
Date: Thu,  6 May 2021 18:50:56 +0200	[thread overview]
Message-ID: <20210506165102.123739-3-firminmartin24@gmail.com> (raw)
In-Reply-To: <20210506165102.123739-1-firminmartin24@gmail.com>

Currently, git-format-patch, along with the option --cover-letter,
unconditionaly overwrites a cover letter with the same name (if
present). Although this is a desired behaviour for patches which are
auto-generated from Git commits log, it might not be the case for a
cover letter whose the content is meticulously written manually.

Particulary, this behaviour could be awkward in the following
hypothetical situations:

* The user can easily erase a cover letter coming from prior versions or
  another patch series by reusing an old command line (e.g. autocompleted
  from the shell history).

* Assuming that the user is writing a cover letter and realizes that
  small changes should be made. They make the change, amend and
  format-patch again to regenerate patches. If it happens that they use
  the same command again (e.g. with --cover-letter), the cover letter
  being written is gone.

This patch addresses this issue by asking confirmation from the user
whenever a cover letter or a patch with the same name already exists.

Signed-off-by: Firmin Martin <firminmartin24@gmail.com>
---
 builtin/log.c | 33 ++++++++++++++++++++++++++++-----
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/builtin/log.c b/builtin/log.c
index 6102893fcc..bada3db9eb 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -35,6 +35,7 @@
 #include "repository.h"
 #include "commit-reach.h"
 #include "range-diff.h"
+#include "prompt.h"
 
 #define MAIL_DEFAULT_WRAP 72
 #define COVER_FROM_AUTO_MAX_SUBJECT_LEN 100
@@ -959,6 +960,10 @@ static int open_next_file(struct commit *commit, const char *subject,
 			 struct rev_info *rev, int quiet)
 {
 	struct strbuf filename = STRBUF_INIT;
+	struct strbuf file_exists_prompt = STRBUF_INIT;
+	const char *yesno;
+	static int not_prompted = 1;
+	int res = 0;
 
 	if (output_directory) {
 		strbuf_addstr(&filename, output_directory);
@@ -972,17 +977,35 @@ static int open_next_file(struct commit *commit, const char *subject,
 	else
 		fmt_output_subject(&filename, subject, rev);
 
-	if (!quiet)
-		printf("%s\n", filename.buf + outdir_offset);
+	if (not_prompted && !access(filename.buf, F_OK)) {
+
+		/*
+		 * TRANSLATORS: Make sure to include [Y] and [n] in your
+		 * translation. The program will only accept English input
+		 * at this point.
+		 */
+		strbuf_addf(&file_exists_prompt, _("The file '%s' already exists.\n"
+			"Would you overwrite this file and subsequent ones [Y/n]? "), filename.buf);
+		yesno = git_prompt(file_exists_prompt.buf, PROMPT_ECHO);
+		not_prompted = 0;
+		if (tolower(*yesno) == 'n') {
+			res = -1;
+			goto done;
+		}
+	}
 
 	if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL) {
 		error_errno(_("cannot open patch file %s"), filename.buf);
-		strbuf_release(&filename);
-		return -1;
+		res = -1;
+		goto done;
 	}
 
+	if (!quiet)
+		printf("%s\n", filename.buf + outdir_offset);
+done:
 	strbuf_release(&filename);
-	return 0;
+	strbuf_release(&file_exists_prompt);
+	return res;
 }
 
 static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
-- 
2.31.1.449.g4a44fa8106


  parent reply	other threads:[~2021-05-06 16:52 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-06 16:50 [PATCH v1 0/8] format-patch: introduce --confirm-overwrite Firmin Martin
2021-05-06 16:50 ` [PATCH v1 1/8] compat/terminal: let prompt accept input from pipe Firmin Martin
2021-05-06 23:37   ` Junio C Hamano
2021-05-07  4:54     ` Jeff King
2021-05-07  5:25       ` Junio C Hamano
2021-05-10  4:18       ` Firmin Martin
2021-05-10 21:32         ` Jeff King
2021-05-11  3:38           ` Junio C Hamano
2021-05-11  6:10             ` Jeff King
2021-05-11  6:17               ` Junio C Hamano
2021-05-11  6:37                 ` Jeff King
2021-05-06 16:50 ` Firmin Martin [this message]
2021-05-06 23:48   ` [PATCH v1 2/8] format-patch: confirmation whenever patches exist Junio C Hamano
2021-05-10  3:30     ` Firmin Martin
2021-05-10  7:32       ` Junio C Hamano
2021-05-11  3:17         ` Firmin Martin
2021-05-06 16:50 ` [PATCH v1 3/8] format-patch: add config option confirmOverwrite Firmin Martin
2021-05-06 16:50 ` [PATCH v1 4/8] format-patch: add the option --confirm-overwrite Firmin Martin
2021-05-06 16:50 ` [PATCH v1 5/8] t4014: test patches overwrite confirmation Firmin Martin
2021-05-06 16:51 ` [PATCH v1 6/8] t4014: fix tests overwriting cover letter in silent Firmin Martin
2021-05-06 16:51 ` [PATCH v1 7/8] doc/format-patch: describe --confirm-overwrite Firmin Martin
2021-05-07  3:32   ` Bagas Sanjaya
2021-05-10  4:22     ` Firmin Martin
2021-05-06 16:51 ` [PATCH v1 8/8] config/format: describe format.confirmOverwrite Firmin Martin
2021-05-06 22:33 ` [PATCH v1 0/8] format-patch: introduce --confirm-overwrite Junio C Hamano
2021-05-11  0:18   ` Firmin Martin
2021-05-07  1:46 ` Felipe Contreras
2021-05-07  8:55   ` Denton Liu
2021-05-11  1:09     ` Firmin Martin
2021-05-11  5:12       ` Felipe Contreras
2021-05-11  5:03     ` Felipe Contreras
2021-05-07 14:02   ` Sergey Organov
2021-05-11  0:46   ` Firmin Martin
2021-05-10 12:02 ` Ævar Arnfjörð Bjarmason

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