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-rw-r--r--unpack-trees.c251
1 files changed, 165 insertions, 86 deletions
diff --git a/unpack-trees.c b/unpack-trees.c
index ee10eea24c..675a9998dc 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -4,6 +4,7 @@
#include "tree-walk.h"
#include "cache-tree.h"
#include "unpack-trees.h"
+#include "progress.h"
#define DBRT_DEBUG 1
@@ -70,7 +71,6 @@ static int entcmp(const char *name1, int dir1, const char *name2, int dir2)
static int unpack_trees_rec(struct tree_entry_list **posns, int len,
const char *base, struct unpack_trees_options *o,
- int *indpos,
struct tree_entry_list *df_conflict_list)
{
int baselen = strlen(base);
@@ -100,7 +100,7 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
cache_name = NULL;
/* Check the cache */
- if (o->merge && *indpos < active_nr) {
+ if (o->merge && o->pos < active_nr) {
/* This is a bit tricky: */
/* If the index has a subdirectory (with
* contents) as the first name, it'll get a
@@ -118,7 +118,7 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
* file case.
*/
- cache_name = active_cache[*indpos]->name;
+ cache_name = active_cache[o->pos]->name;
if (strlen(cache_name) > baselen &&
!memcmp(cache_name, base, baselen)) {
cache_name += baselen;
@@ -158,8 +158,8 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
if (cache_name && !strcmp(cache_name, first)) {
any_files = 1;
- src[0] = active_cache[*indpos];
- remove_cache_entry_at(*indpos);
+ src[0] = active_cache[o->pos];
+ remove_cache_entry_at(o->pos);
}
for (i = 0; i < len; i++) {
@@ -228,7 +228,7 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
#if DBRT_DEBUG > 1
printf("Added %d entries\n", ret);
#endif
- *indpos += ret;
+ o->pos += ret;
} else {
for (i = 0; i < src_size; i++) {
if (src[i]) {
@@ -244,7 +244,7 @@ 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)) {
+ df_conflict_list)) {
retval = -1;
goto leave_directory;
}
@@ -289,36 +289,13 @@ static void unlink_entry(char *name)
}
}
-static volatile sig_atomic_t progress_update;
-
-static void progress_interval(int signum)
-{
- progress_update = 1;
-}
-
-static void setup_progress_signal(void)
-{
- struct sigaction sa;
- struct itimerval v;
-
- memset(&sa, 0, sizeof(sa));
- sa.sa_handler = progress_interval;
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = SA_RESTART;
- sigaction(SIGALRM, &sa, NULL);
-
- v.it_interval.tv_sec = 1;
- v.it_interval.tv_usec = 0;
- v.it_value = v.it_interval;
- setitimer(ITIMER_REAL, &v, NULL);
-}
-
static struct checkout state;
static void check_updates(struct cache_entry **src, int nr,
struct unpack_trees_options *o)
{
unsigned short mask = htons(CE_UPDATE);
- unsigned last_percent = 200, cnt = 0, total = 0;
+ unsigned cnt = 0, total = 0;
+ struct progress progress;
if (o->update && o->verbose_update) {
for (total = cnt = 0; cnt < nr; cnt++) {
@@ -327,35 +304,17 @@ static void check_updates(struct cache_entry **src, int nr,
total++;
}
- /* Don't bother doing this for very small updates */
- if (total < 250)
- total = 0;
-
- if (total) {
- fprintf(stderr, "Checking files out...\n");
- setup_progress_signal();
- progress_update = 1;
- }
+ start_progress_delay(&progress, "Checking %u files out...",
+ "", total, 50, 2);
cnt = 0;
}
while (nr--) {
struct cache_entry *ce = *src++;
- if (total) {
- if (!ce->ce_mode || ce->ce_flags & mask) {
- unsigned percent;
- cnt++;
- percent = (cnt * 100) / total;
- if (percent != last_percent ||
- progress_update) {
- fprintf(stderr, "%4u%% (%u/%u) done\r",
- percent, cnt, total);
- last_percent = percent;
- progress_update = 0;
- }
- }
- }
+ if (total)
+ if (!ce->ce_mode || ce->ce_flags & mask)
+ display_progress(&progress, ++cnt);
if (!ce->ce_mode) {
if (o->update)
unlink_entry(ce->name);
@@ -367,15 +326,12 @@ static void check_updates(struct cache_entry **src, int nr,
checkout_entry(ce, &state, NULL);
}
}
- if (total) {
- signal(SIGALRM, SIG_IGN);
- fputc('\n', stderr);
- }
+ if (total)
+ stop_progress(&progress);;
}
int unpack_trees(struct object_list *trees, struct unpack_trees_options *o)
{
- int indpos = 0;
unsigned len = object_list_length(trees);
struct tree_entry_list **posns;
int i;
@@ -404,7 +360,7 @@ int unpack_trees(struct object_list *trees, struct unpack_trees_options *o)
posn = posn->next;
}
if (unpack_trees_rec(posns, len, o->prefix ? o->prefix : "",
- o, &indpos, &df_conflict_list))
+ o, &df_conflict_list))
return -1;
}
@@ -467,6 +423,64 @@ static void invalidate_ce_path(struct cache_entry *ce)
cache_tree_invalidate_path(active_cache_tree, ce->name);
}
+static int verify_clean_subdirectory(const char *path, const char *action,
+ struct unpack_trees_options *o)
+{
+ /*
+ * we are about to extract "path"; we would not want to lose
+ * anything in the existing directory there.
+ */
+ int namelen;
+ int pos, i;
+ struct dir_struct d;
+ char *pathbuf;
+ int cnt = 0;
+
+ /*
+ * First let's make sure we do not have a local modification
+ * in that directory.
+ */
+ namelen = strlen(path);
+ pos = cache_name_pos(path, namelen);
+ if (0 <= pos)
+ return cnt; /* we have it as nondirectory */
+ pos = -pos - 1;
+ for (i = pos; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ int len = ce_namelen(ce);
+ if (len < namelen ||
+ strncmp(path, ce->name, namelen) ||
+ ce->name[namelen] != '/')
+ break;
+ /*
+ * ce->name is an entry in the subdirectory.
+ */
+ if (!ce_stage(ce)) {
+ verify_uptodate(ce, o);
+ ce->ce_mode = 0;
+ }
+ cnt++;
+ }
+
+ /*
+ * Then we need to make sure that we do not lose a locally
+ * present file that is not ignored.
+ */
+ pathbuf = xmalloc(namelen + 2);
+ memcpy(pathbuf, path, namelen);
+ strcpy(pathbuf+namelen, "/");
+
+ memset(&d, 0, sizeof(d));
+ if (o->dir)
+ d.exclude_per_dir = o->dir->exclude_per_dir;
+ i = read_directory(&d, path, pathbuf, namelen+1, NULL);
+ if (i)
+ die("Updating '%s' would lose untracked files in it",
+ path);
+ free(pathbuf);
+ return cnt;
+}
+
/*
* We do not want to remove or overwrite a working tree file that
* is not tracked, unless it is ignored.
@@ -478,9 +492,62 @@ static void verify_absent(const char *path, const char *action,
if (o->index_only || o->reset || !o->update)
return;
- if (!lstat(path, &st) && !(o->dir && excluded(o->dir, path)))
+
+ if (!lstat(path, &st)) {
+ int cnt;
+
+ if (o->dir && excluded(o->dir, path))
+ /*
+ * path is explicitly excluded, so it is Ok to
+ * overwrite it.
+ */
+ return;
+ if (S_ISDIR(st.st_mode)) {
+ /*
+ * We are checking out path "foo" and
+ * found "foo/." in the working tree.
+ * This is tricky -- if we have modified
+ * files that are in "foo/" we would lose
+ * it.
+ */
+ cnt = verify_clean_subdirectory(path, action, o);
+
+ /*
+ * If this removed entries from the index,
+ * what that means is:
+ *
+ * (1) the caller unpack_trees_rec() saw path/foo
+ * in the index, and it has not removed it because
+ * it thinks it is handling 'path' as blob with
+ * D/F conflict;
+ * (2) we will return "ok, we placed a merged entry
+ * in the index" which would cause o->pos to be
+ * incremented by one;
+ * (3) however, original o->pos now has 'path/foo'
+ * marked with "to be removed".
+ *
+ * We need to increment it by the number of
+ * deleted entries here.
+ */
+ o->pos += cnt;
+ return;
+ }
+
+ /*
+ * The previous round may already have decided to
+ * delete this path, which is in a subdirectory that
+ * is being replaced with a blob.
+ */
+ cnt = cache_name_pos(path, strlen(path));
+ if (0 <= cnt) {
+ struct cache_entry *ce = active_cache[cnt];
+ if (!ce_stage(ce) && !ce->ce_mode)
+ return;
+ }
+
die("Untracked working tree file '%s' "
"would be %s by merge.", path, action);
+ }
}
static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
@@ -525,7 +592,7 @@ static int deleted_entry(struct cache_entry *ce, struct cache_entry *old,
return 1;
}
-static int keep_entry(struct cache_entry *ce)
+static int keep_entry(struct cache_entry *ce, struct unpack_trees_options *o)
{
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD);
return 1;
@@ -556,7 +623,6 @@ int threeway_merge(struct cache_entry **stages,
int count;
int head_match = 0;
int remote_match = 0;
- const char *path = NULL;
int df_conflict_head = 0;
int df_conflict_remote = 0;
@@ -566,13 +632,10 @@ int threeway_merge(struct cache_entry **stages,
int i;
for (i = 1; i < o->head_idx; i++) {
- if (!stages[i])
+ if (!stages[i] || stages[i] == o->df_conflict_entry)
any_anc_missing = 1;
- else {
- if (!path)
- path = stages[i]->name;
+ else
no_anc_exists = 0;
- }
}
index = stages[0];
@@ -588,13 +651,6 @@ int threeway_merge(struct cache_entry **stages,
remote = NULL;
}
- if (!path && index)
- path = index->name;
- if (!path && head)
- path = head->name;
- if (!path && remote)
- path = remote->name;
-
/* First, if there's a #16 situation, note that to prevent #13
* and #14.
*/
@@ -646,6 +702,23 @@ int threeway_merge(struct cache_entry **stages,
if (o->aggressive) {
int head_deleted = !head && !df_conflict_head;
int remote_deleted = !remote && !df_conflict_remote;
+ const char *path = NULL;
+
+ if (index)
+ path = index->name;
+ else if (head)
+ path = head->name;
+ else if (remote)
+ path = remote->name;
+ else {
+ for (i = 1; i < o->head_idx; i++) {
+ if (stages[i] && stages[i] != o->df_conflict_entry) {
+ path = stages[i]->name;
+ break;
+ }
+ }
+ }
+
/*
* Deleted in both.
* Deleted in one and unchanged in the other.
@@ -677,12 +750,12 @@ int threeway_merge(struct cache_entry **stages,
o->nontrivial_merge = 1;
- /* #2, #3, #4, #6, #7, #9, #11. */
+ /* #2, #3, #4, #6, #7, #9, #10, #11. */
count = 0;
if (!head_match || !remote_match) {
for (i = 1; i < o->head_idx; i++) {
- if (stages[i]) {
- keep_entry(stages[i]);
+ if (stages[i] && stages[i] != o->df_conflict_entry) {
+ keep_entry(stages[i], o);
count++;
break;
}
@@ -695,8 +768,8 @@ int threeway_merge(struct cache_entry **stages,
show_stage_entry(stderr, "remote ", stages[remote_match]);
}
#endif
- if (head) { count += keep_entry(head); }
- if (remote) { count += keep_entry(remote); }
+ if (head) { count += keep_entry(head, o); }
+ if (remote) { count += keep_entry(remote, o); }
return count;
}
@@ -713,12 +786,18 @@ int twoway_merge(struct cache_entry **src,
struct unpack_trees_options *o)
{
struct cache_entry *current = src[0];
- struct cache_entry *oldtree = src[1], *newtree = src[2];
+ struct cache_entry *oldtree = src[1];
+ struct cache_entry *newtree = src[2];
if (o->merge_size != 2)
return error("Cannot do a twoway merge of %d trees",
o->merge_size);
+ if (oldtree == o->df_conflict_entry)
+ oldtree = NULL;
+ if (newtree == o->df_conflict_entry)
+ newtree = NULL;
+
if (current) {
if ((!oldtree && !newtree) || /* 4 and 5 */
(!oldtree && newtree &&
@@ -726,9 +805,9 @@ int twoway_merge(struct cache_entry **src,
(oldtree && newtree &&
same(oldtree, newtree)) || /* 14 and 15 */
(oldtree && newtree &&
- !same(oldtree, newtree) && /* 18 and 19*/
+ !same(oldtree, newtree) && /* 18 and 19 */
same(current, newtree))) {
- return keep_entry(current);
+ return keep_entry(current, o);
}
else if (oldtree && !newtree && same(current, oldtree)) {
/* 10 or 11 */
@@ -774,7 +853,7 @@ int bind_merge(struct cache_entry **src,
if (a && old)
die("Entry '%s' overlaps. Cannot bind.", a->name);
if (!a)
- return keep_entry(old);
+ return keep_entry(old, o);
else
return merged_entry(a, NULL, o);
}
@@ -804,7 +883,7 @@ int oneway_merge(struct cache_entry **src,
ce_match_stat(old, &st, 1))
old->ce_flags |= htons(CE_UPDATE);
}
- return keep_entry(old);
+ return keep_entry(old, o);
}
return merged_entry(a, old, o);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 23:33:32 +0000