[RFC 05/11] Refactor path name parsing into new function: get_path_str()

[Johan Herland <johan@herland.net>]

This is in preparation for adding mark reference capability to path names.

Signed-off-by: Johan Herland <johan@herland.net>
---
 fast-import.c |   60 ++++++++++++++++++++++++++++++--------------------------
 1 files changed, 32 insertions(+), 28 deletions(-)

diff --git a/fast-import.c b/fast-import.c
index 7ef9865..8a7cdc1 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1853,6 +1853,24 @@ static void load_branch(struct branch *b)
 	}
 }
 
+static const char *get_path_str(
+	struct strbuf *sb,
+	const char *p,
+	char endc,
+	const char **endp)
+{
+	strbuf_reset(sb);
+	*endp = p;
+	if (!unquote_c_style(sb, p, endp)) {
+		/* successfully unquoted C-style quoted name */
+		p = sb->buf;
+	} else {
+		/* regular path ending at endc */
+		*endp = strchr(p, endc);
+	}
+	return p;
+}
+
 static void file_change_m(struct branch *b)
 {
 	const char *p = command_buf.buf + 2;
@@ -1896,12 +1914,9 @@ static void file_change_m(struct branch *b)
 	if (*p++ != ' ')
 		die("Missing space after SHA1: %s", command_buf.buf);
 
-	strbuf_reset(&uq);
-	if (!unquote_c_style(&uq, p, &endp)) {
-		if (*endp)
-			die("Garbage after path in: %s", command_buf.buf);
-		p = uq.buf;
-	}
+	p = get_path_str(&uq, p, 0, &endp);
+	if (*endp)
+		die("Garbage after path in: %s", command_buf.buf);
 
 	if (S_ISGITLINK(mode)) {
 		if (inline_data)
@@ -1948,12 +1963,9 @@ static void file_change_d(struct branch *b)
 	static struct strbuf uq = STRBUF_INIT;
 	const char *endp;
 
-	strbuf_reset(&uq);
-	if (!unquote_c_style(&uq, p, &endp)) {
-		if (*endp)
-			die("Garbage after path in: %s", command_buf.buf);
-		p = uq.buf;
-	}
+	p = get_path_str(&uq, p, 0, &endp);
+	if (*endp)
+		die("Garbage after path in: %s", command_buf.buf);
 	tree_content_remove(&b->branch_tree, p, NULL);
 }
 
@@ -1966,29 +1978,21 @@ static void file_change_cr(struct branch *b, int rename)
 	struct tree_entry leaf;
 
 	s = command_buf.buf + 2;
-	strbuf_reset(&s_uq);
-	if (!unquote_c_style(&s_uq, s, &endp)) {
-		if (*endp != ' ')
-			die("Missing space after source: %s", command_buf.buf);
-	} else {
-		endp = strchr(s, ' ');
-		if (!endp)
-			die("Missing space after source: %s", command_buf.buf);
+	s = get_path_str(&s_uq, s, ' ', &endp);
+	if (*endp != ' ')
+		die("Missing space after source: %s", command_buf.buf);
+	if (s != s_uq.buf) {
 		strbuf_add(&s_uq, s, endp - s);
+		s = s_uq.buf;
 	}
-	s = s_uq.buf;
 
 	endp++;
 	if (!*endp)
 		die("Missing dest: %s", command_buf.buf);
 
-	d = endp;
-	strbuf_reset(&d_uq);
-	if (!unquote_c_style(&d_uq, d, &endp)) {
-		if (*endp)
-			die("Garbage after dest in: %s", command_buf.buf);
-		d = d_uq.buf;
-	}
+	d = get_path_str(&d_uq, endp, 0, &endp);
+	if (*endp)
+		die("Garbage after dest in: %s", command_buf.buf);
 
 	memset(&leaf, 0, sizeof(leaf));
 	if (rename)
-- 
1.6.4.rc3.138.ga6b98.dirty