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authorMichał Kiedrowicz <michal.kiedrowicz@gmail.com>2009-04-11 19:31:00 (GMT)
committerJunio C Hamano <gitster@pobox.com>2009-04-20 20:46:58 (GMT)
commite8141fcf54b4e8c2c12300da1ad1bc3573a4e204 (patch)
tree1df098f9353e26a422897ff01741ff91f6afeadb /builtin-apply.c
parent1d49f0d1a1b7b2941e56cf8384a7a4267e98150c (diff)
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builtin-apply: keep information about files to be deleted
Example correct diff generated by `diff -M -B' might look like this: diff --git a/file1 b/file2 similarity index 100% rename from file1 rename to file2 diff --git a/file2 b/file1 similarity index 100% rename from file2 rename to file1 Information about removing `file2' comes after information about creation of new `file2' (renamed from `file1'). Existing implementation isn't able to apply such patch, because it has to know in advance which files will be removed. This patch populates fn_table with information about removal of files before calling check_patch() for each patch to be applied. Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-apply.c')
-rw-r--r--builtin-apply.c53
1 files changed, 46 insertions, 7 deletions
diff --git a/builtin-apply.c b/builtin-apply.c
index a664338..c6feaf5 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -2271,6 +2271,25 @@ static struct patch *in_fn_table(const char *name)
return NULL;
}
+/*
+ * item->util in the filename table records the status of the path.
+ * Usually it points at a patch (whose result records the contents
+ * of it after applying it), but it could be PATH_WAS_DELETED for a
+ * path that a previously applied patch has already removed.
+ */
+ #define PATH_TO_BE_DELETED ((struct patch *) -2)
+#define PATH_WAS_DELETED ((struct patch *) -1)
+
+static int to_be_deleted(struct patch *patch)
+{
+ return patch == PATH_TO_BE_DELETED;
+}
+
+static int was_deleted(struct patch *patch)
+{
+ return patch == PATH_WAS_DELETED;
+}
+
static void add_to_fn_table(struct patch *patch)
{
struct string_list_item *item;
@@ -2291,7 +2310,22 @@ static void add_to_fn_table(struct patch *patch)
*/
if ((patch->new_name == NULL) || (patch->is_rename)) {
item = string_list_insert(patch->old_name, &fn_table);
- item->util = (struct patch *) -1;
+ item->util = PATH_WAS_DELETED;
+ }
+}
+
+static void prepare_fn_table(struct patch *patch)
+{
+ /*
+ * store information about incoming file deletion
+ */
+ while (patch) {
+ if ((patch->new_name == NULL) || (patch->is_rename)) {
+ struct string_list_item *item;
+ item = string_list_insert(patch->old_name, &fn_table);
+ item->util = PATH_TO_BE_DELETED;
+ }
+ patch = patch->next;
}
}
@@ -2304,8 +2338,8 @@ static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *
struct patch *tpatch;
if (!(patch->is_copy || patch->is_rename) &&
- ((tpatch = in_fn_table(patch->old_name)) != NULL)) {
- if (tpatch == (struct patch *) -1) {
+ (tpatch = in_fn_table(patch->old_name)) != NULL && !to_be_deleted(tpatch)) {
+ if (was_deleted(tpatch)) {
return error("patch %s has been renamed/deleted",
patch->old_name);
}
@@ -2399,10 +2433,9 @@ static int check_preimage(struct patch *patch, struct cache_entry **ce, struct s
assert(patch->is_new <= 0);
if (!(patch->is_copy || patch->is_rename) &&
- (tpatch = in_fn_table(old_name)) != NULL) {
- if (tpatch == (struct patch *) -1) {
+ (tpatch = in_fn_table(old_name)) != NULL && !to_be_deleted(tpatch)) {
+ if (was_deleted(tpatch))
return error("%s: has been deleted/renamed", old_name);
- }
st_mode = tpatch->new_mode;
} else if (!cached) {
stat_ret = lstat(old_name, st);
@@ -2410,6 +2443,9 @@ static int check_preimage(struct patch *patch, struct cache_entry **ce, struct s
return error("%s: %s", old_name, strerror(errno));
}
+ if (to_be_deleted(tpatch))
+ tpatch = NULL;
+
if (check_index && !tpatch) {
int pos = cache_name_pos(old_name, strlen(old_name));
if (pos < 0) {
@@ -2471,6 +2507,7 @@ static int check_patch(struct patch *patch)
const char *new_name = patch->new_name;
const char *name = old_name ? old_name : new_name;
struct cache_entry *ce = NULL;
+ struct patch *tpatch;
int ok_if_exists;
int status;
@@ -2481,7 +2518,8 @@ static int check_patch(struct patch *patch)
return status;
old_name = patch->old_name;
- if (in_fn_table(new_name) == (struct patch *) -1)
+ if ((tpatch = in_fn_table(new_name)) &&
+ (was_deleted(tpatch) || to_be_deleted(tpatch)))
/*
* A type-change diff is always split into a patch to
* delete old, immediately followed by a patch to
@@ -2533,6 +2571,7 @@ static int check_patch_list(struct patch *patch)
{
int err = 0;
+ prepare_fn_table(patch);
while (patch) {
if (apply_verbosely)
say_patch_name(stderr,