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sequencer: factor out rewrite_file() 

Reduce code duplication by extracting a function for rewriting an
existing file.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
René Scharfe 2017-10-31 10:54:21 +01:00 committed by Junio C Hamano
parent cb5918aa0d
commit 73646bfdcb
1 changed files with 17 additions and 29 deletions
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46
sequencer.c
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@ -2665,6 +2665,20 @@ leave_check:
return res;
}

static int rewrite_file(const char *path, const char *buf, size_t len)
{
int rc = 0;
int fd = open(path, O_WRONLY);
if (fd < 0)
return error_errno(_("could not open '%s' for writing"), path);
if (write_in_full(fd, buf, len) < 0)
rc = error_errno(_("could not write to '%s'"), path);
if (!rc && ftruncate(fd, len) < 0)
rc = error_errno(_("could not truncate '%s'"), path);
close(fd);
return rc;
}

/* skip picking commits whose parents are unchanged */
int skip_unnecessary_picks(void)
{
@ -2737,29 +2751,11 @@ int skip_unnecessary_picks(void)
}
close(fd);

fd = open(rebase_path_todo(), O_WRONLY, 0666);
if (fd < 0) {
error_errno(_("could not open '%s' for writing"),
rebase_path_todo());
if (rewrite_file(rebase_path_todo(), todo_list.buf.buf + offset,
todo_list.buf.len - offset) < 0) {
todo_list_release(&todo_list);
return -1;
}
if (write_in_full(fd, todo_list.buf.buf + offset,
todo_list.buf.len - offset) < 0) {
error_errno(_("could not write to '%s'"),
rebase_path_todo());
close(fd);
todo_list_release(&todo_list);
return -1;
}
if (ftruncate(fd, todo_list.buf.len - offset) < 0) {
error_errno(_("could not truncate '%s'"),
rebase_path_todo());
todo_list_release(&todo_list);
close(fd);
return -1;
}
close(fd);

todo_list.current = i;
if (is_fixup(peek_command(&todo_list, 0)))
@ -2944,15 +2940,7 @@ int rearrange_squash(void)
}
}

fd = open(todo_file, O_WRONLY);
if (fd < 0)
res = error_errno(_("could not open '%s'"), todo_file);
else if (write(fd, buf.buf, buf.len) < 0)
res = error_errno(_("could not write to '%s'"), todo_file);
else if (ftruncate(fd, buf.len) < 0)
res = error_errno(_("could not truncate '%s'"),
todo_file);
close(fd);
res = rewrite_file(todo_file, buf.buf, buf.len);
strbuf_release(&buf);
}