X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=unpack-objects.c;h=48c1ee7968cc6b40cb02cd99d35e66630f922041;hb=1568515d5b8350a6087c0976c841387d71075c01;hp=8ae1a1c0fdab32e6c596872d857f40c5f87b97d4;hpb=1301c6eb412e7c5511b952a12e42c70ad56f028b;p=git.git

diff --git a/unpack-objects.c b/unpack-objects.c
index 8ae1a1c0f..48c1ee796 100644
--- a/unpack-objects.c
+++ b/unpack-objects.c
@@ -2,11 +2,15 @@
 #include "object.h"
 #include "delta.h"
 #include "pack.h"
+#include "blob.h"
+#include "commit.h"
+#include "tag.h"
+#include "tree.h"
 
 #include <sys/time.h>
 
 static int dry_run, quiet;
-static const char unpack_usage[] = "git-unpack-objects [-q] < pack-file";
+static const char unpack_usage[] = "git-unpack-objects [-n] [-q] < pack-file";
 
 /* We always read in 4kB chunks. */
 static unsigned char buffer[4096];
@@ -31,12 +35,10 @@ static void * fill(int min)
 		offset = 0;
 	}
 	do {
-		int ret = read(0, buffer + len, sizeof(buffer) - len);
+		int ret = xread(0, buffer + len, sizeof(buffer) - len);
 		if (ret <= 0) {
 			if (!ret)
 				die("early EOF");
-			if (errno == EAGAIN || errno == EINTR)
-				continue;
 			die("read error on input: %s", strerror(errno));
 		}
 		len += ret;
@@ -150,10 +152,10 @@ static int unpack_non_delta_entry(enum object_type kind, unsigned long size)
 	const char *type;
 
 	switch (kind) {
-	case OBJ_COMMIT: type = "commit"; break;
-	case OBJ_TREE:   type = "tree"; break;
-	case OBJ_BLOB:   type = "blob"; break;
-	case OBJ_TAG:    type = "tag"; break;
+	case OBJ_COMMIT: type = commit_type; break;
+	case OBJ_TREE:   type = tree_type; break;
+	case OBJ_BLOB:   type = blob_type; break;
+	case OBJ_TAG:    type = tag_type; break;
 	default: die("bad type %d", kind);
 	}
 	if (!dry_run)
@@ -239,22 +241,16 @@ static void unpack_one(unsigned nr, unsigned total)
 	}
 }
 
-/*
- * We unpack from the end, older files first. Now, usually
- * there are deltas etc, so we'll not actually write the
- * objects in that order, but we might as well try..
- */
 static void unpack_all(void)
 {
 	int i;
 	struct pack_header *hdr = fill(sizeof(struct pack_header));
-	unsigned version = ntohl(hdr->hdr_version);
 	unsigned nr_objects = ntohl(hdr->hdr_entries);
 
 	if (ntohl(hdr->hdr_signature) != PACK_SIGNATURE)
 		die("bad pack file");
-	if (version != PACK_VERSION)
-		die("unable to handle pack file version %d", version);
+	if (!pack_version_ok(hdr->hdr_version))
+		die("unknown pack file version %d", ntohl(hdr->hdr_version));
 	fprintf(stderr, "Unpacking %d objects\n", nr_objects);
 
 	use(sizeof(struct pack_header));
@@ -269,6 +265,10 @@ int main(int argc, char **argv)
 	int i;
 	unsigned char sha1[20];
 
+	setup_git_directory();
+
+	quiet = !isatty(2);
+
 	for (i = 1 ; i < argc; i++) {
 		const char *arg = argv[i];
 
@@ -297,14 +297,9 @@ int main(int argc, char **argv)
 
 	/* Write the last part of the buffer to stdout */
 	while (len) {
-		int ret = write(1, buffer + offset, len);
-		if (!ret)
-			break;
-		if (ret < 0) {
-			if (errno == EAGAIN || errno == EINTR)
-				continue;
+		int ret = xwrite(1, buffer + offset, len);
+		if (ret <= 0)
 			break;
-		}
 		len -= ret;
 		offset += ret;
 	}