[PATCH v3 07/25] upload-pack: use skip_prefix() instead of starts_with()

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 upload-pack.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/upload-pack.c b/upload-pack.c
index bfb7985..257ad48 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -276,7 +276,7 @@ static void create_pack_file(void)
 	die("git upload-pack: %s", abort_msg);
 }
 
-static int got_sha1(char *hex, unsigned char *sha1)
+static int got_sha1(const char *hex, unsigned char *sha1)
 {
 	struct object *o;
 	int we_knew_they_have = 0;
@@ -382,6 +382,8 @@ static int get_common_commits(void)
 
 	for (;;) {
 		char *line = packet_read_line(0, NULL);
+		const char *arg;
+
 		reset_timeout();
 
 		if (!line) {
@@ -403,8 +405,8 @@ static int get_common_commits(void)
 			got_other = 0;
 			continue;
 		}
-		if (starts_with(line, "have ")) {
-			switch (got_sha1(line+5, sha1)) {
+		if (skip_prefix(line, "have ", &arg)) {
+			switch (got_sha1(arg, sha1)) {
 			case -1: /* they have what we do not */
 				got_other = 1;
 				if (multi_ack && ok_to_give_up()) {
@@ -616,14 +618,16 @@ static void receive_needs(void)
 		const char *features;
 		unsigned char sha1_buf[20];
 		char *line = packet_read_line(0, NULL);
+		const char *arg;
+
 		reset_timeout();
 		if (!line)
 			break;
 
-		if (starts_with(line, "shallow ")) {
+		if (skip_prefix(line, "shallow ", &arg)) {
 			unsigned char sha1[20];
 			struct object *object;
-			if (get_sha1_hex(line + 8, sha1))
+			if (get_sha1_hex(arg, sha1))
 				die("invalid shallow line: %s", line);
 			object = parse_object(sha1);
 			if (!object)
@@ -636,19 +640,19 @@ static void receive_needs(void)
 			}
 			continue;
 		}
-		if (starts_with(line, "deepen ")) {
+		if (skip_prefix(line, "deepen ", &arg)) {
 			char *end;
-			depth = strtol(line + 7, &end, 0);
-			if (end == line + 7 || depth <= 0)
+			depth = strtol(arg, &end, 0);
+			if (end == arg || depth <= 0)
 				die("Invalid deepen: %s", line);
 			continue;
 		}
-		if (!starts_with(line, "want ") ||
-		    get_sha1_hex(line+5, sha1_buf))
+		if (!skip_prefix(line, "want ", &arg) ||
+		    get_sha1_hex(arg, sha1_buf))
 			die("git upload-pack: protocol error, "
 			    "expected to get sha, not '%s'", line);
 
-		features = line + 45;
+		features = arg + 40;
 
 		if (parse_feature_request(features, "multi_ack_detailed"))
 			multi_ack = 2;
-- 
2.7.1.532.gd9e3aaa

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