Re: [PATCH 1/2] Add git-archive

diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
index 61a4135..e0da01e 100644
--- a/builtin-tar-tree.c
+++ b/builtin-tar-tree.c

@@ -9,6 +9,7 @@ #include "strbuf.h"

#include "tar.h"
#include "builtin.h"
#include "pkt-line.h"
+#include "archive.h"

#define RECORDSIZE    (512)
#define BLOCKSIZE    (RECORDSIZE * 20)

@@ -338,6 +339,71 @@ static int generate_tar(int argc, const
    return 0;

}

+static int write_tar_entry(const unsigned char *sha1,
+                           const char *base, int baselen,
+                           const char *filename, unsigned mode, int stage)
+{
+    static struct strbuf path;
+    int filenamelen = strlen(filename);
+    void *buffer;
+    char type[20];
+    unsigned long size;
+
+    if (!path.alloc) {
+        path.buf = xmalloc(PATH_MAX);
+        path.alloc = PATH_MAX;
+        path.len = path.eof = 0;
+    }
+    if (path.alloc < baselen + filenamelen) {
+        free(path.buf);
+        path.buf = xmalloc(baselen + filenamelen);
+        path.alloc = baselen + filenamelen;
+    }
+    memcpy(path.buf, base, baselen);
+    memcpy(path.buf + baselen, filename, filenamelen);
+    path.len = baselen + filenamelen;
+    if (S_ISDIR(mode)) {
+        strbuf_append_string(&path, "/");
+        buffer = NULL;
+        size = 0;
+    } else {
+        buffer = read_sha1_file(sha1, type, &size);
+        if (!buffer)
+            die("cannot read %s", sha1_to_hex(sha1));
+    }
+
+    write_entry(sha1, &path, mode, buffer, size);