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[PATCH 10/21] tree_entry_interesting(): fix depth limit with overlapping pathspecs

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
Dec 15, 2010, 15:02 UTC
Message-ID
<1292425376-14550-11-git-send-email-pclouds@gmail.com>
In-Reply-To
<1292425376-14550-1-git-send-email-pclouds@gmail.com>

Suppose we have two pathspecs 'a' and 'a/b' (both are dirs) and depth limit 1. In current code, pathspecs are checked in input order. When 'a/b' is checked against pathspec 'a', it fails depth limit and therefore is excluded, although it should match 'a/b' pathspec.

This patch reorders all pathspecs alphabetically, then teaches tree_entry_interesting() to check against the deepest pathspec first, so depth limit of a shallower pathspec won't affect a deeper one.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 dir.c       |   13 +++++++++++++
 tree-walk.c |    2 +-
 2 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/dir.c b/dir.c
index 79e88f6..aa0522d 100644
--- a/dir.c
+++ b/dir.c
@@ -1086,6 +1086,15 @@ int remove_path(const char *name)
 	return 0;
 }
 
+static int pathspec_item_cmp(const void *a_, const void *b_)
+{
+	struct pathspec_item *a, *b;
+
+	a = (struct pathspec_item *)a_;
+	b = (struct pathspec_item *)b_;
+	return strcmp(a->match, b->match);
+}
+
 int init_pathspec(struct pathspec *pathspec, const char **paths)
 {
 	const char **p = paths;
@@ -1109,6 +1118,10 @@ int init_pathspec(struct pathspec *pathspec, const char **paths)
 		item->match = path;
 		item->len = strlen(path);
 	}
+
+	qsort(pathspec->items, pathspec->nr,
+	      sizeof(struct pathspec_item), pathspec_item_cmp);
+
 	return 0;
 }
 
diff --git a/tree-walk.c b/tree-walk.c
index 91d7b36..93b05a7 100644
--- a/tree-walk.c
+++ b/tree-walk.c
@@ -568,7 +568,7 @@ int tree_entry_interesting(const struct name_entry *entry,
 
 	pathlen = tree_entry_len(entry->path, entry->sha1);
 
-	for (i = 0; i < ps->nr; i++) {
+	for (i = ps->nr-1; i >= 0; i--) {
 		const struct pathspec_item *item = ps->items+i;
 		const char *match = item->match;
 		int matchlen = item->len;
-- 
1.7.3.3.476.g10a82
Previous: Junio C HamanoNext: Junio C Hamano
Message 14 of 44 in “nd/struct-pathspec v2”
  1. 00/21 nd/struct-pathspec v2Nguyễn Thái Ngọc Duy, Dec 15, 2010
  2. 01/21 Add struct pathspecNguyễn Thái Ngọc Duy, Dec 15, 2010
  3. 02/21 diff-no-index: use diff_tree_setup_paths()Nguyễn Thái Ngọc Duy, Dec 15, 2010
  4. 03/21 Convert struct diff_options to use struct pathspecNguyễn Thái Ngọc Duy, Dec 15, 2010
  5. 04/21 tree_entry_interesting(): remove dependency on struct diff_optionsNguyễn Thái Ngọc Duy, Dec 15, 2010
  6. 05/21 Move tree_entry_interesting() to tree-walk.c and export itNguyễn Thái Ngọc Duy, Dec 15, 2010
  7. 06/21 glossary: define pathspecNguyễn Thái Ngọc Duy, Dec 15, 2010
  8. 07/21 diff-tree: convert base+baselen to writable strbufNguyễn Thái Ngọc Duy, Dec 15, 2010
  9. 08/21 tree_entry_interesting(): refactor into separate smaller functionsNguyễn Thái Ngọc Duy, Dec 15, 2010
  10. 09/21 tree_entry_interesting(): support depth limitNguyễn Thái Ngọc Duy, Dec 15, 2010
  11. Junio C HamanoJan 28, 2011
  12. Nguyen Thai Ngoc DuyJan 29, 2011
  13. tree_entry_interesting(): with no pathspecs, everything will matchJunio C Hamano, Jan 31, 2011
  14. 10/21 tree_entry_interesting(): fix depth limit with overlapping pathspecsNguyễn Thái Ngọc Duy, Dec 15, 2010
  15. Junio C HamanoDec 16, 2010
  16. Nguyen Thai Ngoc DuyDec 17, 2010
  17. Junio C HamanoDec 17, 2010
  18. Nguyen Thai Ngoc DuyDec 18, 2010
  19. 11/21 tree_entry_interesting(): support wildcard matchingNguyễn Thái Ngọc Duy, Dec 15, 2010
  20. diff-tree doc: correct & remove wrong documentationÆvar Arnfjörð Bjarmason, Feb 4, 2019
  21. Duy NguyenFeb 4, 2019
  22. Junio C HamanoFeb 4, 2019
  23. Ævar Arnfjörð BjarmasonFeb 4, 2019
  24. 12/21 tree_entry_interesting(): optimize wildcard matching when base is matchedNguyễn Thái Ngọc Duy, Dec 15, 2010
  25. 13/21 pathspec: add match_pathspec_depth()Nguyễn Thái Ngọc Duy, Dec 15, 2010
  26. 14/21 Convert ce_path_match() to use struct pathspecNguyễn Thái Ngọc Duy, Dec 15, 2010
  27. Junio C HamanoDec 17, 2010
  28. Nguyen Thai Ngoc DuyDec 17, 2010
  29. 14/21 struct rev_info: convert prune_data to struct pathspecNguyễn Thái Ngọc Duy, Dec 17, 2010
  30. 15/21 Convert ce_path_match() to use struct pathspecNguyễn Thái Ngọc Duy, Dec 17, 2010
  31. Junio C HamanoDec 17, 2010
  32. Nguyen Thai Ngoc DuyDec 17, 2010
  33. Junio C HamanoDec 17, 2010
  34. 15/21 Convert ce_path_match() to use match_pathspec_depth()Nguyễn Thái Ngọc Duy, Dec 15, 2010
  35. 16/21 grep: convert to use struct pathspecNguyễn Thái Ngọc Duy, Dec 15, 2010
  36. 17/21 grep: use match_pathspec_depth() for cache/worktree greppingNguyễn Thái Ngọc Duy, Dec 15, 2010
  37. 18/21 strbuf: allow "buf" to point to the middle of the allocated bufferNguyễn Thái Ngọc Duy, Dec 15, 2010
  38. 19/21 grep: use writable strbuf from caller in grep_tree()Nguyễn Thái Ngọc Duy, Dec 15, 2010
  39. Junio C HamanoDec 17, 2010
  40. Nguyen Thai Ngoc DuyDec 17, 2010
  41. 19/21 grep: use writable strbuf from caller for grep_tree()Nguyễn Thái Ngọc Duy, Dec 17, 2010
  42. 20/21 grep: drop pathspec_matches() in favor of tree_entry_interesting()Nguyễn Thái Ngọc Duy, Dec 15, 2010
  43. 20/21 grep: drop pathspec_matches() in favor of tree_entry_interesting()Nguyễn Thái Ngọc Duy, Dec 17, 2010
  44. 21/21 t7810: overlapping pathspecs and depth limitNguyễn Thái Ngọc Duy, Dec 15, 2010

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