Merge branch 'jc/tree-walk-drop-base-offset'

Code simplification.

* jc/tree-walk-drop-base-offset:
  tree-walk: drop unused base_offset from do_match()
  tree-walk: lose base_offset that is never used in tree_entry_interesting

Author: gitster

builtin/grep.c

@@ -643,7 +643,7 @@ static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
 			strbuf_addstr(&name, base->buf + tn_len);
 			match = tree_entry_interesting(repo->index,
 						       &entry, &name,
-						       0, pathspec);
+						       pathspec);
 			strbuf_setlen(&name, name_base_len);
 
 			if (match == all_entries_not_interesting)

list-objects.c

@@ -102,7 +102,7 @@ static void process_tree_contents(struct traversal_context *ctx,
 	while (tree_entry(&desc, &entry)) {
 		if (match != all_entries_interesting) {
 			match = tree_entry_interesting(ctx->revs->repo->index,
-						       &entry, base, 0,
+						       &entry, base,
 						       &ctx->revs->diffopt.pathspec);
 			if (match == all_entries_not_interesting)
 				break;

tree-diff.c

@@ -317,7 +317,7 @@ static void skip_uninteresting(struct tree_desc *t, struct strbuf *base,
 
 	while (t->size) {
 		match = tree_entry_interesting(opt->repo->index, &t->entry,
-					       base, 0, &opt->pathspec);
+					       base, &opt->pathspec);
 		if (match) {
 			if (match == all_entries_not_interesting)
 				t->size = 0;

tree-walk.c

@@ -434,7 +434,7 @@ static inline int prune_traversal(struct index_state *istate,
 	if (still_interesting < 0)
 		return still_interesting;
 	return tree_entry_interesting(istate, e, base,
-				      0, info->pathspec);
+				      info->pathspec);
 }
 
 int traverse_trees(struct index_state *istate,
@@ -1015,17 +1015,17 @@ static int match_wildcard_base(const struct pathspec_item *item,
 /*
  * Is a tree entry interesting given the pathspec we have?
  *
- * Pre-condition: either baselen == base_offset (i.e. empty path)
+ * Pre-condition: either baselen == 0 (i.e. empty path)
  * or base[baselen-1] == '/' (i.e. with trailing slash).
  */
 static enum interesting do_match(struct index_state *istate,
 				 const struct name_entry *entry,
-				 struct strbuf *base, int base_offset,
+				 struct strbuf *base,
 				 const struct pathspec *ps,
 				 int exclude)
 {
 	int i;
-	int pathlen, baselen = base->len - base_offset;
+	int pathlen, baselen = base->len;
 	enum interesting never_interesting = ps->has_wildcard ?
 		entry_not_interesting : all_entries_not_interesting;
 
@@ -1043,7 +1043,7 @@ static enum interesting do_match(struct index_state *istate,
 		    !(ps->magic & PATHSPEC_MAXDEPTH) ||
 		    ps->max_depth == -1)
 			return all_entries_interesting;
-		return within_depth(base->buf + base_offset, baselen,
+		return within_depth(base->buf, baselen,
 				    !!S_ISDIR(entry->mode),
 				    ps->max_depth) ?
 			entry_interesting : entry_not_interesting;
@@ -1054,7 +1054,7 @@ static enum interesting do_match(struct index_state *istate,
 	for (i = ps->nr - 1; i >= 0; i--) {
 		const struct pathspec_item *item = ps->items+i;
 		const char *match = item->match;
-		const char *base_str = base->buf + base_offset;
+		const char *base_str = base->buf;
 		int matchlen = item->len, matched = 0;
 
 		if ((!exclude &&   item->magic & PATHSPEC_EXCLUDE) ||
@@ -1147,9 +1147,9 @@ static enum interesting do_match(struct index_state *istate,
 
 		strbuf_add(base, entry->path, pathlen);
 
-		if (!git_fnmatch(item, match, base->buf + base_offset,
+		if (!git_fnmatch(item, match, base->buf,
 				 item->nowildcard_len)) {
-			strbuf_setlen(base, base_offset + baselen);
+			strbuf_setlen(base, baselen);
 			goto interesting;
 		}
 
@@ -1161,13 +1161,13 @@ static enum interesting do_match(struct index_state *istate,
 		 * be performed in the submodule itself.
 		 */
 		if (ps->recurse_submodules && S_ISGITLINK(entry->mode) &&
-		    !ps_strncmp(item, match, base->buf + base_offset,
+		    !ps_strncmp(item, match, base->buf,
 				item->nowildcard_len)) {
-			strbuf_setlen(base, base_offset + baselen);
+			strbuf_setlen(base, baselen);
 			goto interesting;
 		}
 
-		strbuf_setlen(base, base_offset + baselen);
+		strbuf_setlen(base, baselen);
 
 		/*
 		 * Match all directories. We'll try to match files
@@ -1203,9 +1203,9 @@ static enum interesting do_match(struct index_state *istate,
 				return entry_interesting;
 
 			strbuf_add(base, entry->path, pathlen);
-			ret = match_pathspec_attrs(istate, base->buf + base_offset,
-						   base->len - base_offset, item);
-			strbuf_setlen(base, base_offset + baselen);
+			ret = match_pathspec_attrs(istate, base->buf,
+						   base->len, item);
+			strbuf_setlen(base, baselen);
 			if (!ret)
 				continue;
 		}
@@ -1217,16 +1217,16 @@ static enum interesting do_match(struct index_state *istate,
 /*
  * Is a tree entry interesting given the pathspec we have?
  *
- * Pre-condition: either baselen == base_offset (i.e. empty path)
+ * Pre-condition: either baselen == 0 (i.e. empty path)
  * or base[baselen-1] == '/' (i.e. with trailing slash).
  */
 enum interesting tree_entry_interesting(struct index_state *istate,
 					const struct name_entry *entry,
-					struct strbuf *base, int base_offset,
+					struct strbuf *base,
 					const struct pathspec *ps)
 {
 	enum interesting positive, negative;
-	positive = do_match(istate, entry, base, base_offset, ps, 0);
+	positive = do_match(istate, entry, base, ps, 0);
 
 	/*
 	 * case | entry | positive | negative | result
@@ -1263,7 +1263,7 @@ enum interesting tree_entry_interesting(struct index_state *istate,
 	    positive <= entry_not_interesting) /* #1, #2, #11, #12 */
 		return positive;
 
-	negative = do_match(istate, entry, base, base_offset, ps, 1);
+	negative = do_match(istate, entry, base, ps, 1);
 
 	/* #8, #18 */
 	if (positive == all_entries_interesting &&

tree-walk.h

@@ -224,7 +224,7 @@ enum interesting {
 
 enum interesting tree_entry_interesting(struct index_state *istate,
 					const struct name_entry *,
-					struct strbuf *, int,
+					struct strbuf *,
 					const struct pathspec *ps);
 
 #endif

tree.c

@@ -32,7 +32,7 @@ int read_tree_at(struct repository *r,
 	while (tree_entry(&desc, &entry)) {
 		if (retval != all_entries_interesting) {
 			retval = tree_entry_interesting(r->index, &entry,
-							base, 0, pathspec);
+							base, pathspec);
 			if (retval == all_entries_not_interesting)
 				break;
 			if (retval == entry_not_interesting)