apply: fall back on three-way merge

diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index 7124c4b49cfba7985c5ba2046296f006de04e3bb..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)
@@ -942,6 +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;
@@ -973,6 +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;