[PATCH 05/24] dir.c: remove an implicit dependency on the_index in pathspec code

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Make the match_patchspec API and friends take an index_state instead
of assuming the_index in dir.c. All external call sites are converted
blindly to keep the patch simple and retain current behavior.
Individual call sites may receive further updates to use the right
index instead of the_index.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 archive.c                   |  2 +-
 builtin/add.c               |  6 +++---
 builtin/checkout.c          |  2 +-
 builtin/clean.c             |  2 +-
 builtin/commit.c            |  2 +-
 builtin/grep.c              |  6 +++---
 builtin/ls-files.c          |  6 +++---
 builtin/rm.c                |  2 +-
 builtin/submodule--helper.c |  2 +-
 builtin/update-index.c      |  2 +-
 diff-lib.c                  |  4 ++--
 dir.c                       | 27 ++++++++++++++++-----------
 dir.h                       | 16 ++++++++++------
 pathspec.c                  |  2 +-
 preload-index.c             |  2 +-
 read-cache.c                |  2 +-
 rerere.c                    |  2 +-
 resolve-undo.c              |  2 +-
 revision.c                  |  2 +-
 submodule.c                 |  2 +-
 wt-status.c                 |  6 +++---
 21 files changed, 54 insertions(+), 45 deletions(-)

diff --git a/archive.c b/archive.c
index 31de1bba52..c81e35bf23 100644
--- a/archive.c
+++ b/archive.c
@@ -313,7 +313,7 @@ static int reject_entry(const struct object_id *oid, struct strbuf *base,
 		struct strbuf sb = STRBUF_INIT;
 		strbuf_addbuf(&sb, base);
 		strbuf_addstr(&sb, filename);
-		if (!match_pathspec(context, sb.buf, sb.len, 0, NULL, 1))
+		if (!match_pathspec(&the_index, context, sb.buf, sb.len, 0, NULL, 1))
 			ret = READ_TREE_RECURSIVE;
 		strbuf_release(&sb);
 	}
diff --git a/builtin/add.c b/builtin/add.c
index 8a155dd41e..066623a195 100644
--- a/builtin/add.c
+++ b/builtin/add.c
@@ -40,7 +40,7 @@ static void chmod_pathspec(struct pathspec *pathspec, char flip)
 	for (i = 0; i < active_nr; i++) {
 		struct cache_entry *ce = active_cache[i];
 
-		if (pathspec && !ce_path_match(ce, pathspec, NULL))
+		if (pathspec && !ce_path_match(&the_index, ce, pathspec, NULL))
 			continue;
 
 		if (chmod_cache_entry(ce, flip) < 0)
@@ -135,7 +135,7 @@ static int renormalize_tracked_files(const struct pathspec *pathspec, int flags)
 			continue; /* do not touch unmerged paths */
 		if (!S_ISREG(ce->ce_mode) && !S_ISLNK(ce->ce_mode))
 			continue; /* do not touch non blobs */
-		if (pathspec && !ce_path_match(ce, pathspec, NULL))
+		if (pathspec && !ce_path_match(&the_index, ce, pathspec, NULL))
 			continue;
 		retval |= add_file_to_cache(ce->name, flags | HASH_RENORMALIZE);
 	}
@@ -155,7 +155,7 @@ static char *prune_directory(struct dir_struct *dir, struct pathspec *pathspec,
 	i = dir->nr;
 	while (--i >= 0) {
 		struct dir_entry *entry = *src++;
-		if (dir_path_match(entry, pathspec, prefix, seen))
+		if (dir_path_match(&the_index, entry, pathspec, prefix, seen))
 			*dst++ = entry;
 	}
 	dir->nr = dst - dir->entries;
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 516136a23a..54acb8d268 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -318,7 +318,7 @@ static int checkout_paths(const struct checkout_opts *opts,
 		 * match_pathspec() for _all_ entries when
 		 * opts->source_tree != NULL.
 		 */
-		if (ce_path_match(ce, &opts->pathspec, ps_matched))
+		if (ce_path_match(&the_index, ce, &opts->pathspec, ps_matched))
 			ce->ce_flags |= CE_MATCHED;
 	}
 
diff --git a/builtin/clean.c b/builtin/clean.c
index ab402c204c..8d9a7dc206 100644
--- a/builtin/clean.c
+++ b/builtin/clean.c
@@ -976,7 +976,7 @@ int cmd_clean(int argc, const char **argv, const char *prefix)
 			continue;
 
 		if (pathspec.nr)
-			matches = dir_path_match(ent, &pathspec, 0, NULL);
+			matches = dir_path_match(&the_index, ent, &pathspec, 0, NULL);
 
 		if (pathspec.nr && !matches)
 			continue;
diff --git a/builtin/commit.c b/builtin/commit.c
index 158e3f843a..21277dd42e 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -251,7 +251,7 @@ static int list_paths(struct string_list *list, const char *with_tree,
 
 		if (ce->ce_flags & CE_UPDATE)
 			continue;
-		if (!ce_path_match(ce, pattern, m))
+		if (!ce_path_match(&the_index, ce, pattern, m))
 			continue;
 		item = string_list_insert(list, ce->name);
 		if (ce_skip_worktree(ce))
diff --git a/builtin/grep.c b/builtin/grep.c
index 056161f0f8..9d7ba87f9b 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -497,7 +497,7 @@ static int grep_cache(struct grep_opt *opt, struct repository *repo,
 		strbuf_addstr(&name, ce->name);
 
 		if (S_ISREG(ce->ce_mode) &&
-		    match_pathspec(pathspec, name.buf, name.len, 0, NULL,
+		    match_pathspec(&the_index, pathspec, name.buf, name.len, 0, NULL,
 				   S_ISDIR(ce->ce_mode) ||
 				   S_ISGITLINK(ce->ce_mode))) {
 			/*
@@ -515,7 +515,7 @@ static int grep_cache(struct grep_opt *opt, struct repository *repo,
 				hit |= grep_file(opt, name.buf);
 			}
 		} else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
-			   submodule_path_match(pathspec, name.buf, NULL)) {
+			   submodule_path_match(&the_index, pathspec, name.buf, NULL)) {
 			hit |= grep_submodule(opt, repo, pathspec, NULL, ce->name, ce->name);
 		} else {
 			continue;
@@ -679,7 +679,7 @@ static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
 
 	fill_directory(&dir, &the_index, pathspec);
 	for (i = 0; i < dir.nr; i++) {
-		if (!dir_path_match(dir.entries[i], pathspec, 0, NULL))
+		if (!dir_path_match(&the_index, dir.entries[i], pathspec, 0, NULL))
 			continue;
 		hit |= grep_file(opt, dir.entries[i]->name);
 		if (hit && opt->status_only)
diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index d996734b45..7233b92794 100644
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -128,7 +128,7 @@ static void show_dir_entry(const char *tag, struct dir_entry *ent)
 	if (len > ent->len)
 		die("git ls-files: internal error - directory entry not superset of prefix");
 
-	if (!dir_path_match(ent, &pathspec, len, ps_matched))
+	if (!dir_path_match(&the_index, ent, &pathspec, len, ps_matched))
 		return;
 
 	fputs(tag, stdout);
@@ -228,7 +228,7 @@ static void show_ce(struct repository *repo, struct dir_struct *dir,
 	if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
 	    is_submodule_active(repo, ce->name)) {
 		show_submodule(repo, dir, ce->name);
-	} else if (match_pathspec(&pathspec, fullname, strlen(fullname),
+	} else if (match_pathspec(&the_index, &pathspec, fullname, strlen(fullname),
 				  max_prefix_len, ps_matched,
 				  S_ISDIR(ce->ce_mode) ||
 				  S_ISGITLINK(ce->ce_mode))) {
@@ -264,7 +264,7 @@ static void show_ru_info(const struct index_state *istate)
 		len = strlen(path);
 		if (len < max_prefix_len)
 			continue; /* outside of the prefix */
-		if (!match_pathspec(&pathspec, path, len,
+		if (!match_pathspec(&the_index, &pathspec, path, len,
 				    max_prefix_len, ps_matched, 0))
 			continue; /* uninterested */
 		for (i = 0; i < 3; i++) {
diff --git a/builtin/rm.c b/builtin/rm.c
index 65b448ef8e..eebdc4aab1 100644
--- a/builtin/rm.c
+++ b/builtin/rm.c
@@ -278,7 +278,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 
 	for (i = 0; i < active_nr; i++) {
 		const struct cache_entry *ce = active_cache[i];
-		if (!ce_path_match(ce, &pathspec, seen))
+		if (!ce_path_match(&the_index, ce, &pathspec, seen))
 			continue;
 		ALLOC_GROW(list.entry, list.nr + 1, list.alloc);
 		list.entry[list.nr].name = xstrdup(ce->name);
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index a3c4564c6c..a4440a3109 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -331,7 +331,7 @@ static int module_list_compute(int argc, const char **argv,
 	for (i = 0; i < active_nr; i++) {
 		const struct cache_entry *ce = active_cache[i];
 
-		if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
+		if (!match_pathspec(&the_index, pathspec, ce->name, ce_namelen(ce),
 				    0, ps_matched, 1) ||
 		    !S_ISGITLINK(ce->ce_mode))
 			continue;
diff --git a/builtin/update-index.c b/builtin/update-index.c
index f5c0b6a1d2..f75fd24083 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -748,7 +748,7 @@ static int do_reupdate(int ac, const char **av,
 		int save_nr;
 		char *path;
 
-		if (ce_stage(ce) || !ce_path_match(ce, &pathspec, NULL))
+		if (ce_stage(ce) || !ce_path_match(&the_index, ce, &pathspec, NULL))
 			continue;
 		if (has_head)
 			old = read_one_ent(NULL, &head_oid,
diff --git a/diff-lib.c b/diff-lib.c
index 732f684a49..88a98b1c06 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -109,7 +109,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 		if (diff_can_quit_early(&revs->diffopt))
 			break;
 
-		if (!ce_path_match(ce, &revs->prune_data, NULL))
+		if (!ce_path_match(&the_index, ce, &revs->prune_data, NULL))
 			continue;
 
 		if (ce_stage(ce)) {
@@ -474,7 +474,7 @@ static int oneway_diff(const struct cache_entry * const *src,
 	if (tree == o->df_conflict_entry)
 		tree = NULL;
 
-	if (ce_path_match(idx ? idx : tree, &revs->prune_data, NULL)) {
+	if (ce_path_match(&the_index, idx ? idx : tree, &revs->prune_data, NULL)) {
 		do_oneway_diff(o, idx, tree);
 		if (diff_can_quit_early(&revs->diffopt)) {
 			o->exiting_early = 1;
diff --git a/dir.c b/dir.c
index 29fbbd48c8..e25aed013b 100644
--- a/dir.c
+++ b/dir.c
@@ -276,12 +276,13 @@ static int do_read_blob(const struct object_id *oid, struct oid_stat *oid_stat,
 #define DO_MATCH_DIRECTORY (1<<1)
 #define DO_MATCH_SUBMODULE (1<<2)
 
-static int match_attrs(const char *name, int namelen,
+static int match_attrs(const struct index_state *istate,
+		       const char *name, int namelen,
 		       const struct pathspec_item *item)
 {
 	int i;
 
-	git_check_attr(&the_index, name, item->attr_check);
+	git_check_attr(istate, name, item->attr_check);
 	for (i = 0; i < item->attr_match_nr; i++) {
 		const char *value;
 		int matched;
@@ -318,7 +319,8 @@ static int match_attrs(const char *name, int namelen,
  *
  * It returns 0 when there is no match.
  */
-static int match_pathspec_item(const struct pathspec_item *item, int prefix,
+static int match_pathspec_item(const struct index_state *istate,
+			       const struct pathspec_item *item, int prefix,
 			       const char *name, int namelen, unsigned flags)
 {
 	/* name/namelen has prefix cut off by caller */
@@ -358,7 +360,7 @@ static int match_pathspec_item(const struct pathspec_item *item, int prefix,
 	    strncmp(item->match, name - prefix, item->prefix))
 		return 0;
 
-	if (item->attr_match_nr && !match_attrs(name, namelen, item))
+	if (item->attr_match_nr && !match_attrs(istate, name, namelen, item))
 		return 0;
 
 	/* If the match was just the prefix, we matched */
@@ -426,7 +428,8 @@ static int match_pathspec_item(const struct pathspec_item *item, int prefix,
  * pathspec did not match any names, which could indicate that the
  * user mistyped the nth pathspec.
  */
-static int do_match_pathspec(const struct pathspec *ps,
+static int do_match_pathspec(const struct index_state *istate,
+			     const struct pathspec *ps,
 			     const char *name, int namelen,
 			     int prefix, char *seen,
 			     unsigned flags)
@@ -472,7 +475,7 @@ static int do_match_pathspec(const struct pathspec *ps,
 		 */
 		if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
 			seen[i] = MATCHED_FNMATCH;
-		how = match_pathspec_item(ps->items+i, prefix, name,
+		how = match_pathspec_item(istate, ps->items+i, prefix, name,
 					  namelen, flags);
 		if (ps->recursive &&
 		    (ps->magic & PATHSPEC_MAXDEPTH) &&
@@ -496,17 +499,18 @@ static int do_match_pathspec(const struct pathspec *ps,
 	return retval;
 }
 
-int match_pathspec(const struct pathspec *ps,
+int match_pathspec(const struct index_state *istate,
+		   const struct pathspec *ps,
 		   const char *name, int namelen,
 		   int prefix, char *seen, int is_dir)
 {
 	int positive, negative;
 	unsigned flags = is_dir ? DO_MATCH_DIRECTORY : 0;
-	positive = do_match_pathspec(ps, name, namelen,
+	positive = do_match_pathspec(istate, ps, name, namelen,
 				     prefix, seen, flags);
 	if (!(ps->magic & PATHSPEC_EXCLUDE) || !positive)
 		return positive;
-	negative = do_match_pathspec(ps, name, namelen,
+	negative = do_match_pathspec(istate, ps, name, namelen,
 				     prefix, seen,
 				     flags | DO_MATCH_EXCLUDE);
 	return negative ? 0 : positive;
@@ -515,11 +519,12 @@ int match_pathspec(const struct pathspec *ps,
 /**
  * Check if a submodule is a superset of the pathspec
  */
-int submodule_path_match(const struct pathspec *ps,
+int submodule_path_match(const struct index_state *istate,
+			 const struct pathspec *ps,
 			 const char *submodule_name,
 			 char *seen)
 {
-	int matched = do_match_pathspec(ps, submodule_name,
+	int matched = do_match_pathspec(istate, ps, submodule_name,
 					strlen(submodule_name),
 					0, seen,
 					DO_MATCH_DIRECTORY |
diff --git a/dir.h b/dir.h
index f5fdedbab2..e3ec26143d 100644
--- a/dir.h
+++ b/dir.h
@@ -216,7 +216,8 @@ extern int count_slashes(const char *s);
 extern int simple_length(const char *match);
 extern int no_wildcard(const char *string);
 extern char *common_prefix(const struct pathspec *pathspec);
-extern int match_pathspec(const struct pathspec *pathspec,
+extern int match_pathspec(const struct index_state *istate,
+			  const struct pathspec *pathspec,
 			  const char *name, int namelen,
 			  int prefix, char *seen, int is_dir);
 extern int report_path_error(const char *ps_matched, const struct pathspec *pathspec, const char *prefix);
@@ -326,25 +327,28 @@ extern int git_fnmatch(const struct pathspec_item *item,
 		       const char *pattern, const char *string,
 		       int prefix);
 
-extern int submodule_path_match(const struct pathspec *ps,
+extern int submodule_path_match(const struct index_state *istate,
+				const struct pathspec *ps,
 				const char *submodule_name,
 				char *seen);
 
-static inline int ce_path_match(const struct cache_entry *ce,
+static inline int ce_path_match(const struct index_state *istate,
+				const struct cache_entry *ce,
 				const struct pathspec *pathspec,
 				char *seen)
 {
-	return match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen,
+	return match_pathspec(istate, pathspec, ce->name, ce_namelen(ce), 0, seen,
 			      S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode));
 }
 
-static inline int dir_path_match(const struct dir_entry *ent,
+static inline int dir_path_match(const struct index_state *istate,
+				 const struct dir_entry *ent,
 				 const struct pathspec *pathspec,
 				 int prefix, char *seen)
 {
 	int has_trailing_dir = ent->len && ent->name[ent->len - 1] == '/';
 	int len = has_trailing_dir ? ent->len - 1 : ent->len;
-	return match_pathspec(pathspec, ent->name, len, prefix, seen,
+	return match_pathspec(istate, pathspec, ent->name, len, prefix, seen,
 			      has_trailing_dir);
 }
 
diff --git a/pathspec.c b/pathspec.c
index 27cd606786..897cb9cbbe 100644
--- a/pathspec.c
+++ b/pathspec.c
@@ -37,7 +37,7 @@ void add_pathspec_matches_against_index(const struct pathspec *pathspec,
 		return;
 	for (i = 0; i < istate->cache_nr; i++) {
 		const struct cache_entry *ce = istate->cache[i];
-		ce_path_match(ce, pathspec, seen);
+		ce_path_match(&the_index, ce, pathspec, seen);
 	}
 }
 
diff --git a/preload-index.c b/preload-index.c
index 4d08d44874..d61d7662d5 100644
--- a/preload-index.c
+++ b/preload-index.c
@@ -58,7 +58,7 @@ static void *preload_thread(void *_data)
 			continue;
 		if (ce->ce_flags & CE_FSMONITOR_VALID)
 			continue;
-		if (!ce_path_match(ce, &p->pathspec, NULL))
+		if (!ce_path_match(&the_index, ce, &p->pathspec, NULL))
 			continue;
 		if (threaded_has_symlink_leading_path(&cache, ce->name, ce_namelen(ce)))
 			continue;
diff --git a/read-cache.c b/read-cache.c
index 880849fc8a..3a930bbcc1 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1493,7 +1493,7 @@ int refresh_index(struct index_state *istate, unsigned int flags,
 		if (ignore_submodules && S_ISGITLINK(ce->ce_mode))
 			continue;
 
-		if (pathspec && !ce_path_match(ce, pathspec, seen))
+		if (pathspec && !ce_path_match(&the_index, ce, pathspec, seen))
 			filtered = 1;
 
 		if (ce_stage(ce)) {
diff --git a/rerere.c b/rerere.c
index 16c8aac621..c7787aa07f 100644
--- a/rerere.c
+++ b/rerere.c
@@ -1120,7 +1120,7 @@ int rerere_forget(struct pathspec *pathspec)
 	find_conflict(&conflict);
 	for (i = 0; i < conflict.nr; i++) {
 		struct string_list_item *it = &conflict.items[i];
-		if (!match_pathspec(pathspec, it->string,
+		if (!match_pathspec(&the_index, pathspec, it->string,
 				    strlen(it->string), 0, NULL, 0))
 			continue;
 		rerere_forget_one_path(it->string, &merge_rr);
diff --git a/resolve-undo.c b/resolve-undo.c
index c30ae5cf49..d2e2d22b7f 100644
--- a/resolve-undo.c
+++ b/resolve-undo.c
@@ -188,7 +188,7 @@ void unmerge_index(struct index_state *istate, const struct pathspec *pathspec)
 
 	for (i = 0; i < istate->cache_nr; i++) {
 		const struct cache_entry *ce = istate->cache[i];
-		if (!ce_path_match(ce, pathspec, NULL))
+		if (!ce_path_match(&the_index, ce, pathspec, NULL))
 			continue;
 		i = unmerge_index_entry_at(istate, i);
 	}
diff --git a/revision.c b/revision.c
index 0627494378..de4dce600d 100644
--- a/revision.c
+++ b/revision.c
@@ -1517,7 +1517,7 @@ static void prepare_show_merge(struct rev_info *revs)
 		const struct cache_entry *ce = active_cache[i];
 		if (!ce_stage(ce))
 			continue;
-		if (ce_path_match(ce, &revs->prune_data, NULL)) {
+		if (ce_path_match(&the_index, ce, &revs->prune_data, NULL)) {
 			prune_num++;
 			REALLOC_ARRAY(prune, prune_num);
 			prune[prune_num-2] = ce->name;
diff --git a/submodule.c b/submodule.c
index 6e14547e9e..293efc2a2f 100644
--- a/submodule.c
+++ b/submodule.c
@@ -258,7 +258,7 @@ int is_submodule_active(struct repository *repo, const char *path)
 		}
 
 		parse_pathspec(&ps, 0, 0, NULL, args.argv);
-		ret = match_pathspec(&ps, path, strlen(path), 0, NULL, 1);
+		ret = match_pathspec(&the_index, &ps, path, strlen(path), 0, NULL, 1);
 
 		argv_array_clear(&args);
 		clear_pathspec(&ps);
diff --git a/wt-status.c b/wt-status.c
index 6bf2fdbab6..5ffab61015 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -647,7 +647,7 @@ static void wt_status_collect_changes_initial(struct wt_status *s)
 		struct wt_status_change_data *d;
 		const struct cache_entry *ce = active_cache[i];
 
-		if (!ce_path_match(ce, &s->pathspec, NULL))
+		if (!ce_path_match(&the_index, ce, &s->pathspec, NULL))
 			continue;
 		if (ce_intent_to_add(ce))
 			continue;
@@ -703,7 +703,7 @@ static void wt_status_collect_untracked(struct wt_status *s)
 	for (i = 0; i < dir.nr; i++) {
 		struct dir_entry *ent = dir.entries[i];
 		if (cache_name_is_other(ent->name, ent->len) &&
-		    dir_path_match(ent, &s->pathspec, 0, NULL))
+		    dir_path_match(&the_index, ent, &s->pathspec, 0, NULL))
 			string_list_insert(&s->untracked, ent->name);
 		free(ent);
 	}
@@ -711,7 +711,7 @@ static void wt_status_collect_untracked(struct wt_status *s)
 	for (i = 0; i < dir.ignored_nr; i++) {
 		struct dir_entry *ent = dir.ignored[i];
 		if (cache_name_is_other(ent->name, ent->len) &&
-		    dir_path_match(ent, &s->pathspec, 0, NULL))
+		    dir_path_match(&the_index, ent, &s->pathspec, 0, NULL))
 			string_list_insert(&s->ignored, ent->name);
 		free(ent);
 	}
-- 
2.18.0.1004.g6639190530