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| -rw-r--r-- | sequencer.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sequencer.c b/sequencer.c index 6d5fe9485a..282c4d19e8 100644 --- a/sequencer.c +++ b/sequencer.c @@ -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); |