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@xxxxxx>
---
sequencer.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/sequencer.c b/sequencer.c
index 99c39fb..de6b95f 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -234,6 +234,37 @@ 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.
+ *
+ * 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);
--
2.10.1.513.g00ef6dd