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Teach Git to respect skip-worktree bit (reading part)

grep: turn on --cached for files that is marked skip-worktree
ls-files: do not check for deleted file that is marked skip-worktree
update-index: ignore update request if it's skip-worktree, while still allows removing
diff*: skip worktree version

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent 44a3691 commit b4d1690df11ae6ce382b93778616b1a20f1774ff @pclouds pclouds committed with gitster Aug 20, 2009
Showing with 199 additions and 26 deletions.
  1. +5 −0 builtin-commit.c
  2. +1 −1 builtin-grep.c
  3. +2 −0 builtin-ls-files.c
  4. +22 −16 builtin-update-index.c
  5. +3 −2 diff-lib.c
  6. +1 −1 diff.c
  7. +2 −6 read-cache.c
  8. +163 −0 t/t7011-skip-worktree-reading.sh
View
@@ -180,6 +180,11 @@ static void add_remove_files(struct string_list *list)
for (i = 0; i < list->nr; i++) {
struct stat st;
struct string_list_item *p = &(list->items[i]);
+ int pos = index_name_pos(&the_index, p->string, strlen(p->string));
+ struct cache_entry *ce = pos < 0 ? NULL : active_cache[pos];
+
+ if (ce && ce_skip_worktree(ce))
+ continue;
if (!lstat(p->string, &st)) {
if (add_to_cache(p->string, &st, 0))
View
@@ -517,7 +517,7 @@ static int grep_cache(struct grep_opt *opt, const char **paths, int cached,
* are identical, even if worktree file has been modified, so use
* cache version instead
*/
- if (cached || (ce->ce_flags & CE_VALID)) {
+ if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) {
if (ce_stage(ce))
continue;
hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
View
@@ -194,6 +194,8 @@ static void show_files(struct dir_struct *dir, const char *prefix)
continue;
if (ce->ce_flags & CE_UPDATE)
continue;
+ if (ce_skip_worktree(ce))
+ continue;
err = lstat(ce->name, &st);
if (show_deleted && err)
show_ce_entry(tag_removed, ce);
View
@@ -172,29 +172,29 @@ static int process_directory(const char *path, int len, struct stat *st)
return error("%s: is a directory - add files inside instead", path);
}
-/*
- * Process a regular file
- */
-static int process_file(const char *path, int len, struct stat *st)
-{
- int pos = cache_name_pos(path, len);
- struct cache_entry *ce = pos < 0 ? NULL : active_cache[pos];
-
- if (ce && S_ISGITLINK(ce->ce_mode))
- return error("%s is already a gitlink, not replacing", path);
-
- return add_one_path(ce, path, len, st);
-}
-
static int process_path(const char *path)
{
- int len;
+ int pos, len;
struct stat st;
+ struct cache_entry *ce;
len = strlen(path);
if (has_symlink_leading_path(path, len))
return error("'%s' is beyond a symbolic link", path);
+ pos = cache_name_pos(path, len);
+ ce = pos < 0 ? NULL : active_cache[pos];
+ if (ce && ce_skip_worktree(ce)) {
+ /*
+ * working directory version is assumed "good"
+ * so updating it does not make sense.
+ * On the other hand, removing it from index should work
+ */
+ if (allow_remove && remove_file_from_cache(path))
+ return error("%s: cannot remove from the index", path);
+ return 0;
+ }
+
/*
* First things first: get the stat information, to decide
* what to do about the pathname!
@@ -205,7 +205,13 @@ static int process_path(const char *path)
if (S_ISDIR(st.st_mode))
return process_directory(path, len, &st);
- return process_file(path, len, &st);
+ /*
+ * Process a regular file
+ */
+ if (ce && S_ISGITLINK(ce->ce_mode))
+ return error("%s is already a gitlink, not replacing", path);
+
+ return add_one_path(ce, path, len, &st);
}
static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
View
@@ -159,7 +159,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
continue;
}
- if (ce_uptodate(ce))
+ if (ce_uptodate(ce) || ce_skip_worktree(ce))
continue;
/* If CE_VALID is set, don't look at workdir for file removal */
@@ -339,7 +339,8 @@ static void do_oneway_diff(struct unpack_trees_options *o,
int match_missing, cached;
/* if the entry is not checked out, don't examine work tree */
- cached = o->index_only || (idx && (idx->ce_flags & CE_VALID));
+ cached = o->index_only ||
+ (idx && ((idx->ce_flags & CE_VALID) || ce_skip_worktree(idx)));
/*
* Backward compatibility wart - "diff-index -m" does
* not mean "do not ignore merges", but "match_missing".
View
2 diff.c
@@ -1805,7 +1805,7 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
* If ce is marked as "assume unchanged", there is no
* guarantee that work tree matches what we are looking for.
*/
- if (ce->ce_flags & CE_VALID)
+ if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce))
return 0;
/*
View
@@ -265,7 +265,7 @@ int ie_match_stat(const struct index_state *istate,
* If it's marked as always valid in the index, it's
* valid whatever the checked-out copy says.
*/
- if (!ignore_valid && (ce->ce_flags & CE_VALID))
+ if (!ignore_valid && ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)))
return 0;
/*
@@ -1004,11 +1004,7 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
if (ce_uptodate(ce))
return ce;
- /*
- * CE_VALID means the user promised us that the change to
- * the work tree does not matter and told us not to worry.
- */
- if (!ignore_valid && (ce->ce_flags & CE_VALID)) {
+ if (!ignore_valid && ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce))) {
ce_mark_uptodate(ce);
return ce;
}
@@ -0,0 +1,163 @@
+#!/bin/sh
+#
+# Copyright (c) 2008 Nguyễn Thái Ngọc Duy
+#
+
+test_description='skip-worktree bit test'
+
+. ./test-lib.sh
+
+cat >expect.full <<EOF
+H 1
+H 2
+H init.t
+H sub/1
+H sub/2
+EOF
+
+cat >expect.skip <<EOF
+S 1
+H 2
+H init.t
+S sub/1
+H sub/2
+EOF
+
+NULL_SHA1=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
+ZERO_SHA0=0000000000000000000000000000000000000000
+setup_absent() {
+ test -f 1 && rm 1
+ git update-index --remove 1 &&
+ git update-index --add --cacheinfo 100644 $NULL_SHA1 1 &&
+ git update-index --skip-worktree 1
+}
+
+test_absent() {
+ echo "100644 $NULL_SHA1 0 1" > expected &&
+ git ls-files --stage 1 > result &&
+ test_cmp expected result &&
+ test ! -f 1
+}
+
+setup_dirty() {
+ git update-index --force-remove 1 &&
+ echo dirty > 1 &&
+ git update-index --add --cacheinfo 100644 $NULL_SHA1 1 &&
+ git update-index --skip-worktree 1
+}
+
+test_dirty() {
+ echo "100644 $NULL_SHA1 0 1" > expected &&
+ git ls-files --stage 1 > result &&
+ test_cmp expected result &&
+ echo dirty > expected
+ test_cmp expected 1
+}
+
+test_expect_success 'setup' '
+ test_commit init &&
+ mkdir sub &&
+ touch ./1 ./2 sub/1 sub/2 &&
+ git add 1 2 sub/1 sub/2 &&
+ git update-index --skip-worktree 1 sub/1 &&
+ git ls-files -t > result &&
+ test_cmp expect.skip result
+'
+
+test_expect_success 'update-index' '
+ setup_absent &&
+ git update-index 1 &&
+ test_absent
+'
+
+test_expect_success 'update-index' '
+ setup_dirty &&
+ git update-index 1 &&
+ test_dirty
+'
+
+test_expect_success 'update-index --remove' '
+ setup_absent &&
+ git update-index --remove 1 &&
+ test -z "$(git ls-files 1)" &&
+ test ! -f 1
+'
+
+test_expect_success 'update-index --remove' '
+ setup_dirty &&
+ git update-index --remove 1 &&
+ test -z "$(git ls-files 1)" &&
+ echo dirty > expected &&
+ test_cmp expected 1
+'
+
+test_expect_success 'ls-files --delete' '
+ setup_absent &&
+ test -z "$(git ls-files -d)"
+'
+
+test_expect_success 'ls-files --delete' '
+ setup_dirty &&
+ test -z "$(git ls-files -d)"
+'
+
+test_expect_success 'ls-files --modified' '
+ setup_absent &&
+ test -z "$(git ls-files -m)"
+'
+
+test_expect_success 'ls-files --modified' '
+ setup_dirty &&
+ test -z "$(git ls-files -m)"
+'
+
+test_expect_success 'grep with skip-worktree file' '
+ git update-index --no-skip-worktree 1 &&
+ echo test > 1 &&
+ git update-index 1 &&
+ git update-index --skip-worktree 1 &&
+ rm 1 &&
+ test "$(git grep --no-ext-grep test)" = "1:test"
+'
+
+echo ":000000 100644 $ZERO_SHA0 $NULL_SHA1 A 1" > expected
+test_expect_success 'diff-index does not examine skip-worktree absent entries' '
+ setup_absent &&
+ git diff-index HEAD -- 1 > result &&
+ test_cmp expected result
+'
+
+test_expect_success 'diff-index does not examine skip-worktree dirty entries' '
+ setup_dirty &&
+ git diff-index HEAD -- 1 > result &&
+ test_cmp expected result
+'
+
+test_expect_success 'diff-files does not examine skip-worktree absent entries' '
+ setup_absent &&
+ test -z "$(git diff-files -- one)"
+'
+
+test_expect_success 'diff-files does not examine skip-worktree dirty entries' '
+ setup_dirty &&
+ test -z "$(git diff-files -- one)"
+'
+
+test_expect_success 'git-rm succeeds on skip-worktree absent entries' '
+ setup_absent &&
+ git rm 1
+'
+
+test_expect_failure 'commit on skip-worktree absent entries' '
+ git reset &&
+ setup_absent &&
+ test_must_fail git commit -m null 1
+'
+
+test_expect_failure 'commit on skip-worktree dirty entries' '
+ git reset &&
+ setup_dirty &&
+ test_must_fail git commit -m null 1
+'
+
+test_done

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