mirrors/git
1
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-10-28 04:49:43 +01:00
Code Activity

sequencer: introduce a helper to read files written by scripts

Browse source 
As we are slowly teaching the sequencer to perform the hard work for
the interactive rebase, we need to read files that were written by
shell scripts.

These files typically contain a single line and are invariably ended
by a line feed (and possibly a carriage return before that). Let's use
a helper to read such files and to remove the line ending.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2016-10-21 14:25:08 +02:00 committed by Junio C Hamano
parent b5a670452c
commit 1dfc84e9e0
1 changed files with 34 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
sequencer.c
View file

@ -234,6 +234,40 @@ static int write_message(struct strbuf *msgbuf, const char *filename)
return 0;
}
/*
* Reads a file that was presumably written by a shell script, i.e. with an
* end-of-line marker that needs to be stripped.
*
* Note that only the last end-of-line marker is stripped, consistent with the
* behavior of "$(cat path)" in a shell script.
*
* Returns 1 if the file was read, 0 if it could not be read or does not exist.
*/
static int read_oneliner(struct strbuf *buf,
const char *path, int skip_if_empty)
{
int orig_len = buf->len;
if (!file_exists(path))
return 0;
if (strbuf_read_file(buf, path, 0) < 0) {
warning_errno(_("could not read '%s'"), path);
return 0;
}
if (buf->len > orig_len && buf->buf[buf->len - 1] == '\n') {
if (--buf->len > orig_len && buf->buf[buf->len - 1] == '\r')
--buf->len;
buf->buf[buf->len] = '\0';
}
if (skip_if_empty && buf->len == orig_len)
return 0;
return 1;
}
static struct tree *empty_tree(void)
{
return lookup_tree(EMPTY_TREE_SHA1_BIN);