Merge branch 'master' into sp/reflog

* master: (90 commits)
  fetch.c: remove an unused variable and dead code.
  Clean up sha1 file writing
  Builtin git-cat-file
  builtin format-patch: squelch content-type for 7-bit ASCII
  CMIT_FMT_EMAIL: Q-encode Subject: and display-name part of From: fields.
  add more informative error messages to git-mktag
  remove the artificial restriction tagsize < 8kb
  git-rebase: use canonical A..B syntax to format-patch
  git-format-patch: now built-in.
  fmt-patch: Support --attach
  fmt-patch: understand old <his> notation
  Teach fmt-patch about --keep-subject
  Teach fmt-patch about --numbered
  fmt-patch: implement -o <dir>
  fmt-patch: output file names to stdout
  Teach fmt-patch to write individual files.
  built-in tar-tree and remote tar-tree
  Builtin git-diff-files, git-diff-index, git-diff-stages, and git-diff-tree.
  Builtin git-show-branch.
  Builtin git-apply.
  ...

1 files changed, 74 insertions, 0 deletions

diff --git a/builtin-upload-tar.c b/builtin-upload-tar.c
new file mode 100644
index 0000000000..d4fa7b56c3
--- /dev/null
+++ b/builtin-upload-tar.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2006 Junio C Hamano
+ */
+#include "cache.h"
+#include "pkt-line.h"
+#include "exec_cmd.h"
+#include "builtin.h"
+
+static const char upload_tar_usage[] = "git-upload-tar <repo>";
+
+static int nak(const char *reason)
+{
+	packet_write(1, "NACK %s\n", reason);
+	packet_flush(1);
+	return 1;
+}
+
+int cmd_upload_tar(int argc, const char **argv, char **envp)
+{
+	int len;
+	const char *dir = argv[1];
+	char buf[8192];
+	unsigned char sha1[20];
+	char *base = NULL;
+	char hex[41];
+	int ac;
+	const char *av[4];
+
+	if (argc != 2)
+		usage(upload_tar_usage);
+	if (strlen(dir) < sizeof(buf)-1)
+		strcpy(buf, dir); /* enter-repo smudges its argument */
+	else
+		packet_write(1, "NACK insanely long repository name %s\n", dir);
+	if (!enter_repo(buf, 0)) {
+		packet_write(1, "NACK not a git archive %s\n", dir);
+		packet_flush(1);
+		return 1;
+	}
+
+	len = packet_read_line(0, buf, sizeof(buf));
+	if (len < 5 || strncmp("want ", buf, 5))
+		return nak("expected want");
+	if (buf[len-1] == '\n')
+		buf[--len] = 0;
+	if (get_sha1(buf + 5, sha1))
+		return nak("expected sha1");
+        strcpy(hex, sha1_to_hex(sha1));
+
+	len = packet_read_line(0, buf, sizeof(buf));
+	if (len) {
+		if (len < 5 || strncmp("base ", buf, 5))
+			return nak("expected (optional) base");
+		if (buf[len-1] == '\n')
+			buf[--len] = 0;
+		base = strdup(buf + 5);
+		len = packet_read_line(0, buf, sizeof(buf));
+	}
+	if (len)
+		return nak("expected flush");
+
+	packet_write(1, "ACK\n");
+	packet_flush(1);
+
+	ac = 0;
+	av[ac++] = "tar-tree";
+	av[ac++] = hex;
+	if (base)
+		av[ac++] = base;
+	av[ac++] = NULL;
+	execv_git_cmd(av);
+	/* should it return that is an error */
+	return 1;
+}