path: convert strbuf_git_common_path to take a 'struct repository'

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

path.c

@@ -524,11 +524,12 @@ int strbuf_git_path_submodule(struct strbuf *buf, const char *path,
 	return err;
 }
 
-static void do_git_common_path(struct strbuf *buf,
+static void do_git_common_path(const struct repository *repo,
+			       struct strbuf *buf,
 			       const char *fmt,
 			       va_list args)
 {
-	strbuf_addstr(buf, get_git_common_dir());
+	strbuf_addstr(buf, repo->commondir);
 	if (buf->len && !is_dir_sep(buf->buf[buf->len - 1]))
 		strbuf_addch(buf, '/');
 	strbuf_vaddf(buf, fmt, args);
@@ -540,16 +541,18 @@ const char *git_common_path(const char *fmt, ...)
 	struct strbuf *pathname = get_pathname();
 	va_list args;
 	va_start(args, fmt);
-	do_git_common_path(pathname, fmt, args);
+	do_git_common_path(the_repository, pathname, fmt, args);
 	va_end(args);
 	return pathname->buf;
 }
 
-void strbuf_git_common_path(struct strbuf *sb, const char *fmt, ...)
+void strbuf_git_common_path(struct strbuf *sb,
+			    const struct repository *repo,
+			    const char *fmt, ...)
 {
 	va_list args;
 	va_start(args, fmt);
-	do_git_common_path(sb, fmt, args);
+	do_git_common_path(repo, sb, fmt, args);
 	va_end(args);
 }
 

path.h

@@ -1,6 +1,8 @@
 #ifndef PATH_H
 #define PATH_H
 
+struct repository;
+
 /*
  * Return a statically allocated filename, either generically (mkpath), in
  * the repository directory (git_path), or in a submodule's repository
@@ -17,8 +19,10 @@ extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
 	__attribute__((format (printf, 3, 4)));
 extern void strbuf_git_path(struct strbuf *sb, const char *fmt, ...)
 	__attribute__((format (printf, 2, 3)));
-extern void strbuf_git_common_path(struct strbuf *sb, const char *fmt, ...)
+extern void strbuf_git_common_path(struct strbuf *sb,
-	__attribute__((format (printf, 2, 3)));
+				   const struct repository *repo,
+				   const char *fmt, ...)
+	__attribute__((format (printf, 3, 4)));
 extern char *git_path_buf(struct strbuf *buf, const char *fmt, ...)
 	__attribute__((format (printf, 2, 3)));
 extern int strbuf_git_path_submodule(struct strbuf *sb, const char *path,

worktree.c

@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "repository.h"
 #include "refs.h"
 #include "strbuf.h"
 #include "worktree.h"
@@ -76,7 +77,7 @@ static struct worktree *get_linked_worktree(const char *id)
 	if (!id)
 		die("Missing linked worktree name");
 
-	strbuf_git_common_path(&path, "worktrees/%s/gitdir", id);
+	strbuf_git_common_path(&path, the_repository, "worktrees/%s/gitdir", id);
 	if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0)
 		/* invalid gitdir file */
 		goto done;