This follows up commit ed93b449 where we removed overcautious
"working file will be lost" check.
A new option "--ignore=.gitignore" can be used to tell the
"git-read-tree" command that the user does not mind losing
contents in untracked files in the working tree if it needs to
be overwritten by a merge (either a two-way "switch branch"
merge, or a three-way merge).
Signed-off-by: Junio C Hamano <junkio@xxxxxxx>
---
builtin-read-tree.c | 20 ++++++++++
dir.c | 4 +-
dir.h | 3 ++
t/t1004-read-tree-m-u-wf.sh | 82 ++++++++++++++++++++++++++++++++++++++----
unpack-trees.c | 24 ++++++++++---
unpack-trees.h | 1 +
6 files changed, 119 insertions(+), 15 deletions(-)
diff --git a/builtin-read-tree.c b/builtin-read-tree.c
index c1867d2..37b2214 100644
--- a/builtin-read-tree.c
+++ b/builtin-read-tree.c
@@ -10,6 +10,7 @@
#include "tree-walk.h"
#include "cache-tree.h"
#include "unpack-trees.h"
+#include "dir.h"
#include "builtin.h"
static struct object_list *trees;
@@ -178,6 +179,23 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
continue;
}
+ if (!strncmp(arg, "--ignore=", 9)) {
+ struct dir_struct *dir;
+
+ if (opts.dir)
+ die("more than one --ignore is given.");
+
+ dir = calloc(1, sizeof(*opts.dir));
+ dir->show_ignored = 1;
+ dir->exclude_per_dir = arg + 9;
+ opts.dir = dir;
+ /* We do not need to nor want to do read-directory
+ * here; we are merely interested in reusing the
+ * per directory ignore stack mechanism.
+ */
+ continue;
+ }
+
/* using -u and -i at the same time makes no sense */
if (1 < opts.index_only + opts.update)
usage(read_tree_usage);
@@ -190,6 +208,8 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
}
if ((opts.update||opts.index_only) && !opts.merge)
usage(read_tree_usage);
+ if ((opts.dir && !opts.update))
+ die("--ignore is meaningless unless -u");
if (opts.prefix) {
int pfxlen = strlen(opts.prefix);
diff --git a/dir.c b/dir.c
index 96389b3..e6a61ee 100644
--- a/dir.c
+++ b/dir.c
@@ -156,7 +156,7 @@ void add_excludes_from_file(struct dir_struct *dir, const char *fname)
die("cannot use %s as an exclude file", fname);
}
-static int push_exclude_per_directory(struct dir_struct *dir, const char *base, int baselen)
+int push_exclude_per_directory(struct dir_struct *dir, const char *base, int baselen)
{
char exclude_file[PATH_MAX];
struct exclude_list *el = &dir->exclude_list[EXC_DIRS];
@@ -170,7 +170,7 @@ static int push_exclude_per_directory(struct dir_struct *dir, const char *base,
return current_nr;
}
-static void pop_exclude_per_directory(struct dir_struct *dir, int stk)
+void pop_exclude_per_directory(struct dir_struct *dir, int stk)
{
struct exclude_list *el = &dir->exclude_list[EXC_DIRS];
diff --git a/dir.h b/dir.h
index 313f8ab..550551a 100644
--- a/dir.h
+++ b/dir.h
@@ -43,6 +43,9 @@ extern int common_prefix(const char **pathspec);
extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen);
extern int read_directory(struct dir_struct *, const char *path, const char *base, int baselen);
+extern int push_exclude_per_directory(struct dir_struct *, const char *, int);
+extern void pop_exclude_per_directory(struct dir_struct *, int);
+
extern int excluded(struct dir_struct *, const char *);
extern void add_excludes_from_file(struct dir_struct *, const char *fname);
extern void add_exclude(const char *string, const char *base,
diff --git a/t/t1004-read-tree-m-u-wf.sh b/t/t1004-read-tree-m-u-wf.sh
index 018fbea..3f6f361 100755
--- a/t/t1004-read-tree-m-u-wf.sh
+++ b/t/t1004-read-tree-m-u-wf.sh
@@ -8,23 +8,27 @@ test_description='read-tree -m -u checks working tree files'
test_expect_success 'two-way setup' '
+ mkdir subdir &&
echo >file1 file one &&
echo >file2 file two &&
- git update-index --add file1 file2 &&
+ echo >subdir/file1 file one in subdirectory &&
+ echo >subdir/file2 file two in subdirectory &&
+ git update-index --add file1 file2 subdir/file1 subdir/file2 &&
git commit -m initial &&
git branch side &&
git tag -f branch-point &&
echo file2 is not tracked on the master anymore &&
- rm -f file2 &&
- git update-index --remove file2 &&
- git commit -a -m "master removes file2"
+ rm -f file2 subdir/file2 &&
+ git update-index --remove file2 subdir/file2 &&
+ git commit -a -m "master removes file2 and subdir/file2"
'
test_expect_success 'two-way not clobbering' '
echo >file2 master creates untracked file2 &&
+ echo >subdir/file2 master creates untracked subdir/file2 &&
if err=`git read-tree -m -u master side 2>&1`
then
echo should have complained
@@ -34,20 +38,82 @@ test_expect_success 'two-way not clobbering' '
fi
'
+echo file2 >.gitignore
+
+test_expect_success 'two-way with incorrect --ignore (1)' '
+
+ if err=`git read-tree -m --ignore=.gitignore master side 2>&1`
+ then
+ echo should have complained
+ false
+ else
+ echo "happy to see $err"
+ fi
+'
+
+test_expect_success 'two-way with incorrect --ignore (2)' '
+
+ if err=`git read-tree -m -u --ignore=foo --ignore=.gitignore master side 2>&1`
+ then
+ echo should have complained
+ false
+ else
+ echo "happy to see $err"
+ fi
+'
+
+test_expect_success 'two-way clobbering a ignored file' '
+
+ git read-tree -m -u --ignore=.gitignore master side
+'
+
+rm -f .gitignore
+
# three-tree test
-test_expect_success 'three-way not complaining' '
+test_expect_success 'three-way not complaining on an untracked path in both' '
- rm -f file2 &&
+ rm -f file2 subdir/file2 &&
git checkout side &&
echo >file3 file three &&
- git update-index --add file3 &&
- git commit -a -m "side adds file3" &&
+ echo >subdir/file3 file three &&
+ git update-index --add file3 subdir/file3 &&
+ git commit -a -m "side adds file3 and removes file2" &&
git checkout master &&
echo >file2 file two is untracked on the master side &&
+ echo >subdir/file2 file two is untracked on the master side &&
git-read-tree -m -u branch-point master side
'
+test_expect_success 'three-way not cloberring a working tree file' '
+
+ git reset --hard &&
+ rm -f file2 subdir/file2 file3 subdir/file3 &&
+ git checkout master &&
+ echo >file3 file three created in master, untracked &&
+ echo >subdir/file3 file three created in master, untracked &&
+ if err=`git read-tree -m -u branch-point master side 2>&1`
+ then
+ echo should have complained
+ false
+ else
+ echo "happy to see $err"
+ fi
+'
+
+echo >.gitignore file3
+
+test_expect_success 'three-way not complaining on an untracked file' '
+
+ git reset --hard &&
+ rm -f file2 subdir/file2 file3 subdir/file3 &&
+ git checkout master &&
+ echo >file3 file three created in master, untracked &&
+ echo >subdir/file3 file three created in master, untracked &&
+
+ git read-tree -m -u --ignore=.gitignore branch-point master side
+'
+
test_done
diff --git a/unpack-trees.c b/unpack-trees.c
index 7cfd628..79d21e2 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1,6 +1,7 @@
#include <signal.h>
#include <sys/time.h>
#include "cache.h"
+#include "dir.h"
#include "tree.h"
#include "tree-walk.h"
#include "cache-tree.h"
@@ -77,6 +78,12 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
{
int baselen = strlen(base);
int src_size = len + 1;
+ int i_stk = i_stk;
+ int retval = 0;
+
+ if (o->dir)
+ i_stk = push_exclude_per_directory(o->dir, base, strlen(base));
+
do {
int i;
const char *first;
@@ -143,7 +150,7 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
}
/* No name means we're done */
if (!first)
- return 0;
+ goto leave_directory;
pathlen = strlen(first);
ce_size = cache_entry_size(baselen + pathlen);
@@ -240,13 +247,20 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
newbase[baselen + pathlen] = '/';
newbase[baselen + pathlen + 1] = '\0';
if (unpack_trees_rec(subposns, len, newbase, o,
- indpos, df_conflict_list))
- return -1;
+ indpos, df_conflict_list)) {
+ retval = -1;
+ goto leave_directory;
+ }
free(newbase);
}
free(subposns);
free(src);
} while (1);
+
+ leave_directory:
+ if (o->dir)
+ pop_exclude_per_directory(o->dir, i_stk);
+ return retval;
}
/* Unlink the last component and attempt to remove leading
@@ -456,7 +470,7 @@ static void invalidate_ce_path(struct cache_entry *ce)
/*
* We do not want to remove or overwrite a working tree file that
- * is not tracked.
+ * is not tracked, unless it is ignored.
*/
static void verify_absent(const char *path, const char *action,
struct unpack_trees_options *o)
@@ -465,7 +479,7 @@ static void verify_absent(const char *path, const char *action,
if (o->index_only || o->reset || !o->update)
return;
- if (!lstat(path, &st))
+ if (!lstat(path, &st) && !(o->dir && excluded(o->dir, path)))
die("Untracked working tree file '%s' "
"would be %s by merge.", path, action);
}
diff --git a/unpack-trees.h b/unpack-trees.h
index c460162..191f744 100644
--- a/unpack-trees.h
+++ b/unpack-trees.h
@@ -16,6 +16,7 @@ struct unpack_trees_options {
int verbose_update;
int aggressive;
const char *prefix;
+ struct dir_struct *dir;
merge_fn_t fn;
int head_idx;
--
1.4.4.1.ga37e
-
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