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use write_file_buf where applicable

Browse source 
There are several places where we open a file, write some
content from a strbuf, and close it. These can be simplified
with write_file_buf(). As a bonus, many of these did not
catch write problems at close() time.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2016-07-08 05:12:55 -04:00 committed by Junio C Hamano
parent e04d08a4b3
commit e78d5d4993
2 changed files with 6 additions and 46 deletions
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7
builtin/am.c
View file

@ -402,13 +402,8 @@ static int read_commit_msg(struct am_state *state)
*/
static void write_commit_msg(const struct am_state *state)
{
int fd;
const char *filename = am_path(state, "final-commit");
fd = xopen(filename, O_WRONLY | O_CREAT, 0666);
if (write_in_full(fd, state->msg, state->msg_len) < 0)
die_errno(_("could not write to %s"), filename);
close(fd);
write_file_buf(filename, state->msg, state->msg_len);
}
/**

45
builtin/merge.c
View file

@ -336,15 +336,9 @@ static void squash_message(struct commit *commit, struct commit_list *remotehead
struct rev_info rev;
struct strbuf out = STRBUF_INIT;
struct commit_list *j;
const char *filename;
int fd;
struct pretty_print_context ctx = {0};
printf(_("Squash commit -- not updating HEAD\n"));
filename = git_path_squash_msg();
fd = open(filename, O_WRONLY | O_CREAT, 0666);
if (fd < 0)
die_errno(_("Could not write to '%s'"), filename);
init_revisions(&rev, NULL);
rev.ignore_merges = 1;
@ -371,10 +365,7 @@ static void squash_message(struct commit *commit, struct commit_list *remotehead
oid_to_hex(&commit->object.oid));
pretty_print_commit(&ctx, commit, &out);
}
if (write_in_full(fd, out.buf, out.len) != out.len)
die_errno(_("Writing SQUASH_MSG"));
if (close(fd))
die_errno(_("Finishing SQUASH_MSG"));
write_file_buf(git_path_squash_msg(), out.buf, out.len);
strbuf_release(&out);
}
@ -756,18 +747,6 @@ static void add_strategies(const char *string, unsigned attr)
}
static void write_merge_msg(struct strbuf *msg)
{
const char *filename = git_path_merge_msg();
int fd = open(filename, O_WRONLY | O_CREAT, 0666);
if (fd < 0)
die_errno(_("Could not open '%s' for writing"),
filename);
if (write_in_full(fd, msg->buf, msg->len) != msg->len)
die_errno(_("Could not write to '%s'"), filename);
close(fd);
}
static void read_merge_msg(struct strbuf *msg)
{
const char *filename = git_path_merge_msg();
@ -801,7 +780,7 @@ static void prepare_to_commit(struct commit_list *remoteheads)
strbuf_addch(&msg, '\n');
if (0 < option_edit)
strbuf_commented_addf(&msg, _(merge_editor_comment), comment_line_char);
write_merge_msg(&msg);
write_file_buf(git_path_merge_msg(), msg.buf, msg.len);
if (run_commit_hook(0 < option_edit, get_index_file(), "prepare-commit-msg",
git_path_merge_msg(), "merge", NULL))
abort_commit(remoteheads, NULL);
@ -964,8 +943,6 @@ static int setup_with_upstream(const char ***argv)
static void write_merge_state(struct commit_list *remoteheads)
{
const char *filename;
int fd;
struct commit_list *j;
struct strbuf buf = STRBUF_INIT;
@ -979,26 +956,14 @@ static void write_merge_state(struct commit_list *remoteheads)
}
strbuf_addf(&buf, "%s\n", oid_to_hex(oid));
}
filename = git_path_merge_head();
fd = open(filename, O_WRONLY | O_CREAT, 0666);
if (fd < 0)
die_errno(_("Could not open '%s' for writing"), filename);
if (write_in_full(fd, buf.buf, buf.len) != buf.len)
die_errno(_("Could not write to '%s'"), filename);
close(fd);
write_file_buf(git_path_merge_head(), buf.buf, buf.len);
strbuf_addch(&merge_msg, '\n');
write_merge_msg(&merge_msg);
write_file_buf(git_path_merge_msg(), merge_msg.buf, merge_msg.len);
filename = git_path_merge_mode();
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (fd < 0)
die_errno(_("Could not open '%s' for writing"), filename);
strbuf_reset(&buf);
if (fast_forward == FF_NO)
strbuf_addf(&buf, "no-ff");
if (write_in_full(fd, buf.buf, buf.len) != buf.len)
die_errno(_("Could not write to '%s'"), filename);
close(fd);
write_file_buf(git_path_merge_mode(), buf.buf, buf.len);
}
static int default_edit_option(void)