apply: fall back on three-way merge

diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index a4d3e90a86be3242cd9d35baa712cce79faec649..10db15b18403f01b9ee5db27b37d1e0cdbb2abb1 100644 (file)
--- a/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c
@@ -23,7 +23,9 @@ static struct fetch_pack_args args = {
 };
 
 static const char fetch_pack_usage[] =
-"git fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]";
+"git fetch-pack [--all] [--stdin] [--quiet|-q] [--keep|-k] [--thin] "
+"[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
+"[--no-progress] [-v] [<host>:]<directory> [<refs>...]";
 
 #define COMPLETE       (1U << 0)
 #define COMMON         (1U << 1)
@@ -58,9 +60,9 @@ static void rev_list_push(struct commit *commit, int mark)
        }
 }
 
-static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int rev_list_insert_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
-       struct object *o = deref_tag(parse_object(sha1), path, 0);
+       struct object *o = deref_tag(parse_object(sha1), refname, 0);
 
        if (o && o->type == OBJ_COMMIT)
                rev_list_push((struct commit *)o, SEEN);
@@ -68,9 +70,9 @@ static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int
        return 0;
 }
 
-static int clear_marks(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int clear_marks(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
-       struct object *o = deref_tag(parse_object(sha1), path, 0);
+       struct object *o = deref_tag(parse_object(sha1), refname, 0);
 
        if (o && o->type == OBJ_COMMIT)
                clear_commit_marks((struct commit *)o,
@@ -256,11 +258,6 @@ static void insert_one_alternate_ref(const struct ref *ref, void *unused)
        rev_list_insert_ref(NULL, ref->old_sha1, 0, NULL);
 }
 
-static void insert_alternate_refs(void)
-{
-       for_each_alternate_ref(insert_one_alternate_ref, NULL);
-}
-
 #define INITIAL_FLUSH 16
 #define PIPESAFE_FLUSH 32
 #define LARGE_FLUSH 1024
@@ -295,7 +292,7 @@ static int find_common(int fd[2], unsigned char *result_sha1,
        marked = 1;
 
        for_each_ref(rev_list_insert_ref, NULL);
-       insert_alternate_refs();
+       for_each_alternate_ref(insert_one_alternate_ref, NULL);
 
        fetching = 0;
        for ( ; refs ; refs = refs->next) {
@@ -493,7 +490,7 @@ static int find_common(int fd[2], unsigned char *result_sha1,
 
 static struct commit_list *complete;
 
-static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int mark_complete(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
        struct object *o = parse_object(sha1);
 
@@ -586,6 +583,11 @@ static void filter_refs(struct ref **refs, int nr_match, char **match)
        *refs = newlist;
 }
 
+static void mark_alternate_complete(const struct ref *ref, void *unused)
+{
+       mark_complete(NULL, ref->old_sha1, 0, NULL);
+}
+
 static int everything_local(struct ref **refs, int nr_match, char **match)
 {
        struct ref *ref;
@@ -614,6 +616,7 @@ static int everything_local(struct ref **refs, int nr_match, char **match)
 
        if (!args.depth) {
                for_each_ref(mark_complete, NULL);
+               for_each_alternate_ref(mark_alternate_complete, NULL);
                if (cutoff)
                        mark_recent_complete_commits(cutoff);
        }
@@ -941,6 +944,10 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
                                args.fetch_all = 1;
                                continue;
                        }
+                       if (!strcmp("--stdin", arg)) {
+                               args.stdin_refs = 1;
+                               continue;
+                       }
                        if (!strcmp("-v", arg)) {
                                args.verbose = 1;
                                continue;
@@ -972,6 +979,40 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
        if (!dest)
                usage(fetch_pack_usage);
 
+       if (args.stdin_refs) {
+               /*
+                * Copy refs from cmdline to new growable list, then
+                * append the refs from the standard input.
+                */
+               int alloc_heads = nr_heads;
+               int size = nr_heads * sizeof(*heads);
+               heads = memcpy(xmalloc(size), heads, size);
+               if (args.stateless_rpc) {
+                       /* in stateless RPC mode we use pkt-line to read
+                        * from stdin, until we get a flush packet
+                        */
+                       static char line[1000];
+                       for (;;) {
+                               int n = packet_read_line(0, line, sizeof(line));
+                               if (!n)
+                                       break;
+                               if (line[n-1] == '\n')
+                                       n--;
+                               ALLOC_GROW(heads, nr_heads + 1, alloc_heads);
+                               heads[nr_heads++] = xmemdupz(line, n);
+                       }
+               }
+               else {
+                       /* read from stdin one ref per line, until EOF */
+                       struct strbuf line = STRBUF_INIT;
+                       while (strbuf_getline(&line, stdin, '\n') != EOF) {
+                               ALLOC_GROW(heads, nr_heads + 1, alloc_heads);
+                               heads[nr_heads++] = strbuf_detach(&line, NULL);
+                       }
+                       strbuf_release(&line);
+               }
+       }
+
        if (args.stateless_rpc) {
                conn = NULL;
                fd[0] = 0;