quote_path_relative(): remove redundant parameter

quote_path_relative() used to take a counted string as its parameter
(the string to be quoted).  With an earlier change, it now uses
relative_path() that does not take a counted string, and we have
been passing only the pointer to the string since then.

Remove the length parameter from quote_path_relative() to show that
this parameter was redundant.  All the changed lines show that the
caller passed either -1 (to ask the function run strlen() on the
string), or the length of the string, so the earlier conversion was
safe.

All the callers of quote_path_relative() that used to take counted string
have been audited to make sure that they are passing length of the actual
string (or -1 to ask the callee run strlen())

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

3 files changed, 12 insertions, 13 deletions

diff --git a/builtin/clean.c b/builtin/clean.c
index 04e396b17..f77f95d7a 100644
--- a/builtin/clean.c
+++ b/builtin/clean.c
@@ -56,7 +56,7 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 	if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
 			!resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
 		if (!quiet) {
-			quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
+			quote_path_relative(path->buf, prefix, &quoted);
 			printf(dry_run ?  _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
 					quoted.buf);
 		}
@@ -70,7 +70,7 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 		/* an empty dir could be removed even if it is unreadble */
 		res = dry_run ? 0 : rmdir(path->buf);
 		if (res) {
-			quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
+			quote_path_relative(path->buf, prefix, &quoted);
 			warning(_(msg_warn_remove_failed), quoted.buf);
 			*dir_gone = 0;
 		}
@@ -94,7 +94,7 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 			if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
 				ret = 1;
 			if (gone) {
-				quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
+				quote_path_relative(path->buf, prefix, &quoted);
 				string_list_append(&dels, quoted.buf);
 			} else
 				*dir_gone = 0;
@@ -102,10 +102,10 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 		} else {
 			res = dry_run ? 0 : unlink(path->buf);
 			if (!res) {
-				quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
+				quote_path_relative(path->buf, prefix, &quoted);
 				string_list_append(&dels, quoted.buf);
 			} else {
-				quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
+				quote_path_relative(path->buf, prefix, &quoted);
 				warning(_(msg_warn_remove_failed), quoted.buf);
 				*dir_gone = 0;
 				ret = 1;
@@ -127,7 +127,7 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 		if (!res)
 			*dir_gone = 1;
 		else {
-			quote_path_relative(path->buf, strlen(path->buf), &quoted, prefix);
+			quote_path_relative(path->buf, prefix, &quoted);
 			warning(_(msg_warn_remove_failed), quoted.buf);
 			*dir_gone = 0;
 			ret = 1;
@@ -262,7 +262,7 @@ int cmd_clean(int argc, const char **argv, const char *prefix)
 				if (remove_dirs(&directory, prefix, rm_flags, dry_run, quiet, &gone))
 					errors++;
 				if (gone && !quiet) {
-					qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);
+					qname = quote_path_relative(directory.buf, prefix, &buf);
 					printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 				}
 			}
@@ -272,11 +272,11 @@ int cmd_clean(int argc, const char **argv, const char *prefix)
 				continue;
 			res = dry_run ? 0 : unlink(ent->name);
 			if (res) {
-				qname = quote_path_relative(ent->name, -1, &buf, prefix);
+				qname = quote_path_relative(ent->name, prefix, &buf);
 				warning(_(msg_warn_remove_failed), qname);
 				errors++;
 			} else if (!quiet) {
-				qname = quote_path_relative(ent->name, -1, &buf, prefix);
+				qname = quote_path_relative(ent->name, prefix, &buf);
 				printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 			}
 		}
diff --git a/builtin/grep.c b/builtin/grep.c
index 159e65d47..a419cda72 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -286,8 +286,7 @@ static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
 	struct strbuf pathbuf = STRBUF_INIT;
 
 	if (opt->relative && opt->prefix_length) {
-		quote_path_relative(filename + tree_name_len, -1, &pathbuf,
-				    opt->prefix);
+		quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf);
 		strbuf_insert(&pathbuf, 0, filename, tree_name_len);
 	} else {
 		strbuf_addstr(&pathbuf, filename);
@@ -318,7 +317,7 @@ static int grep_file(struct grep_opt *opt, const char *filename)
 	struct strbuf buf = STRBUF_INIT;
 
 	if (opt->relative && opt->prefix_length)
-		quote_path_relative(filename, -1, &buf, opt->prefix);
+		quote_path_relative(filename, opt->prefix, &buf);
 	else
 		strbuf_addstr(&buf, filename);
 
diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index 67e3713cd..48c82e8e9 100644
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -394,7 +394,7 @@ int report_path_error(const char *ps_matched, const char **pathspec, const char
 		if (found_dup)
 			continue;
 
-		name = quote_path_relative(pathspec[num], -1, &sb, prefix);
+		name = quote_path_relative(pathspec[num], prefix, &sb);
 		error("pathspec '%s' did not match any file(s) known to git.",
 		      name);
 		errors++;