tree.h API: simplify read_tree_recursive() signature

Simplify the signature of read_tree_recursive() to omit the "base",
"baselen" and "stage" arguments. No callers of it use these parameters
for anything anymore.

The last function to call read_tree_recursive() with a non-"" path was
read_tree_recursive() itself, but that was changed in
ffd31f661d (Reimplement read_tree_recursive() using
tree_entry_interesting(), 2011-03-25).

The last user of the "stage" parameter went away in the last commit,
and even that use was mere boilerplate.

So let's remove those and rename the read_tree_recursive() function to
just read_tree(). We had another read_tree() function that I've
refactored away in preceding commits, since all in-tree users read
trees recursively with a callback we can change the name to signify
that this is the norm.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

archive.c

@@ -229,7 +229,7 @@ static int write_directory(struct archiver_context *c)
 
 static int queue_or_write_archive_entry(const struct object_id *oid,
 		struct strbuf *base, const char *filename,
-		unsigned mode, int stage, void *context)
+		unsigned mode, void *context)
 {
 	struct archiver_context *c = context;
 
@@ -314,10 +314,10 @@ int write_archive_entries(struct archiver_args *args,
 		git_attr_set_direction(GIT_ATTR_INDEX);
 	}
 
-	err = read_tree_recursive(args->repo, args->tree, "",
+	err = read_tree(args->repo, args->tree,
-				  0, 0, &args->pathspec,
+			&args->pathspec,
-				  queue_or_write_archive_entry,
+			queue_or_write_archive_entry,
-				  &context);
+			&context);
 	if (err == READ_TREE_RECURSIVE)
 		err = 0;
 	while (context.bottom) {
@@ -375,7 +375,7 @@ struct path_exists_context {
 };
 
 static int reject_entry(const struct object_id *oid, struct strbuf *base,
-			const char *filename, unsigned mode, int stage,
+			const char *filename, unsigned mode,
 			void *context)
 {
 	int ret = -1;
@@ -403,9 +403,9 @@ static int path_exists(struct archiver_args *args, const char *path)
 	ctx.args = args;
 	parse_pathspec(&ctx.pathspec, 0, 0, "", paths);
 	ctx.pathspec.recursive = 1;
-	ret = read_tree_recursive(args->repo, args->tree, "",
+	ret = read_tree(args->repo, args->tree,
-				  0, 0, &ctx.pathspec,
+			&ctx.pathspec,
-				  reject_entry, &ctx);
+			reject_entry, &ctx);
 	clear_pathspec(&ctx.pathspec);
 	return ret != 0;
 }

builtin/checkout.c

@@ -114,7 +114,7 @@ static int post_checkout_hook(struct commit *old_commit, struct commit *new_comm
 }
 
 static int update_some(const struct object_id *oid, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *context)
+		const char *pathname, unsigned mode, void *context)
 {
 	int len;
 	struct cache_entry *ce;
@@ -155,8 +155,8 @@ static int update_some(const struct object_id *oid, struct strbuf *base,
 
 static int read_tree_some(struct tree *tree, const struct pathspec *pathspec)
 {
-	read_tree_recursive(the_repository, tree, "", 0, 0,
+	read_tree(the_repository, tree,
-			    pathspec, update_some, NULL);
+		  pathspec, update_some, NULL);
 
 	/* update the index with the given tree's info
 	 * for all args, expanding wildcards, and exit
@@ -322,7 +322,7 @@ static void mark_ce_for_checkout_overlay(struct cache_entry *ce,
 	 * If it comes from the tree-ish, we already know it
 	 * matches the pathspec and could just stamp
 	 * CE_MATCHED to it from update_some(). But we still
-	 * need ps_matched and read_tree_recursive (and
+	 * need ps_matched and read_tree (and
 	 * eventually tree_entry_interesting) cannot fill
 	 * ps_matched yet. Once it can, we can avoid calling
 	 * match_pathspec() for _all_ entries when

builtin/log.c

@@ -599,7 +599,7 @@ static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
 
 static int show_tree_object(const struct object_id *oid,
 		struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *context)
+		const char *pathname, unsigned mode, void *context)
 {
 	FILE *file = context;
 	fprintf(file, "%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
@@ -681,9 +681,9 @@ int cmd_show(int argc, const char **argv, const char *prefix)
 					diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
 					name,
 					diff_get_color_opt(&rev.diffopt, DIFF_RESET));
-			read_tree_recursive(the_repository, (struct tree *)o, "",
+			read_tree(the_repository, (struct tree *)o,
-					    0, 0, &match_all, show_tree_object,
+				  &match_all, show_tree_object,
-					    rev.diffopt.file);
+				  rev.diffopt.file);
 			rev.shown_one = 1;
 			break;
 		case OBJ_COMMIT:

builtin/ls-files.c

@@ -446,7 +446,7 @@ static int read_one_entry_opt(struct index_state *istate,
 }
 
 static int read_one_entry(const struct object_id *oid, struct strbuf *base,
-			  const char *pathname, unsigned mode, int stage,
+			  const char *pathname, unsigned mode,
 			  void *context)
 {
 	struct index_state *istate = context;
@@ -460,7 +460,7 @@ static int read_one_entry(const struct object_id *oid, struct strbuf *base,
  * the stage that will conflict with the entry being added.
  */
 static int read_one_entry_quick(const struct object_id *oid, struct strbuf *base,
-				const char *pathname, unsigned mode, int stage,
+				const char *pathname, unsigned mode,
 				void *context)
 {
 	struct index_state *istate = context;
@@ -522,7 +522,7 @@ void overlay_tree_on_index(struct index_state *istate,
 
 	if (!fn)
 		fn = read_one_entry_quick;
-	err = read_tree_recursive(the_repository, tree, "", 0, 1, &pathspec, fn, istate);
+	err = read_tree(the_repository, tree, &pathspec, fn, istate);
 	if (err)
 		die("unable to read tree entries %s", tree_name);
 

builtin/ls-tree.c

@@ -62,7 +62,7 @@ static int show_recursive(const char *base, int baselen, const char *pathname)
 }
 
 static int show_tree(const struct object_id *oid, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *context)
+		const char *pathname, unsigned mode, void *context)
 {
 	int retval = 0;
 	int baselen;
@@ -185,6 +185,6 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 	tree = parse_tree_indirect(&oid);
 	if (!tree)
 		die("not a tree object");
-	return !!read_tree_recursive(the_repository, tree, "", 0, 0,
+	return !!read_tree(the_repository, tree,
-				     &pathspec, show_tree, NULL);
+			   &pathspec, show_tree, NULL);
 }

merge-recursive.c

@@ -453,7 +453,7 @@ static void unpack_trees_finish(struct merge_options *opt)
 
 static int save_files_dirs(const struct object_id *oid,
 			   struct strbuf *base, const char *path,
-			   unsigned int mode, int stage, void *context)
+			   unsigned int mode, void *context)
 {
 	struct path_hashmap_entry *entry;
 	int baselen = base->len;
@@ -473,8 +473,8 @@ static void get_files_dirs(struct merge_options *opt, struct tree *tree)
 {
 	struct pathspec match_all;
 	memset(&match_all, 0, sizeof(match_all));
-	read_tree_recursive(opt->repo, tree, "", 0, 0,
+	read_tree(opt->repo, tree,
-			    &match_all, save_files_dirs, opt);
+		  &match_all, save_files_dirs, opt);
 }
 
 static int get_tree_entry_if_blob(struct repository *r,

tree.c

@@ -13,7 +13,6 @@ const char *tree_type = "tree";
 
 int read_tree_at(struct repository *r,
 		 struct tree *tree, struct strbuf *base,
-		 int stage,
 		 const struct pathspec *pathspec,
 		 read_tree_fn_t fn, void *context)
 {
@@ -39,7 +38,7 @@ int read_tree_at(struct repository *r,
 		}
 
 		switch (fn(&entry.oid, base,
-			   entry.path, entry.mode, stage, context)) {
+			   entry.path, entry.mode, context)) {
 		case 0:
 			continue;
 		case READ_TREE_RECURSIVE:
@@ -73,7 +72,7 @@ int read_tree_at(struct repository *r,
 		strbuf_add(base, entry.path, len);
 		strbuf_addch(base, '/');
 		retval = read_tree_at(r, lookup_tree(r, &oid),
-				      base, stage, pathspec,
+				      base, pathspec,
 				      fn, context);
 		strbuf_setlen(base, oldlen);
 		if (retval)
@@ -82,17 +81,13 @@ int read_tree_at(struct repository *r,
 	return 0;
 }
 
-int read_tree_recursive(struct repository *r,
+int read_tree(struct repository *r,
-			struct tree *tree,
+	      struct tree *tree,
-			const char *base, int baselen,
+	      const struct pathspec *pathspec,
-			int stage, const struct pathspec *pathspec,
+	      read_tree_fn_t fn, void *context)
-			read_tree_fn_t fn, void *context)
 {
 	struct strbuf sb = STRBUF_INIT;
-	int ret;
+	int ret = read_tree_at(r, tree, &sb, pathspec, fn, context);
-
-	strbuf_add(&sb, base, baselen);
-	ret = read_tree_at(r, tree, &sb, stage, pathspec, fn, context);
 	strbuf_release(&sb);
 	return ret;
 }

tree.h

@@ -31,17 +31,16 @@ struct tree *parse_tree_indirect(const struct object_id *oid);
 int cmp_cache_name_compare(const void *a_, const void *b_);
 
 #define READ_TREE_RECURSIVE 1
-typedef int (*read_tree_fn_t)(const struct object_id *, struct strbuf *, const char *, unsigned int, int, void *);
+typedef int (*read_tree_fn_t)(const struct object_id *, struct strbuf *, const char *, unsigned int, void *);
 
 int read_tree_at(struct repository *r,
 		 struct tree *tree, struct strbuf *base,
-		 int stage,
 		 const struct pathspec *pathspec,
 		 read_tree_fn_t fn, void *context);
 
-int read_tree_recursive(struct repository *r,
+int read_tree(struct repository *r,
-			struct tree *tree,
+	      struct tree *tree,
-			const char *base, int baselen,
+	      const struct pathspec *pathspec,
-			int stage, const struct pathspec *pathspec,
+	      read_tree_fn_t fn, void *context);
-			read_tree_fn_t fn, void *context);
+
 #endif /* TREE_H */