Add "git checkout" that does what the name suggests

diff --git a/tar-tree.c b/tar-tree.c
index d313c80565824824f2e954510d5bbbc65b8e116b..4c47fc2bec1e6305d122865e2da318bc795ab8ef 100644 (file)
--- a/tar-tree.c
+++ b/tar-tree.c
@@ -17,7 +17,7 @@
 #define EXT_HEADER_PATH                1
 #define EXT_HEADER_LINKPATH    2
 
-static const char *tar_tree_usage = "tar-tree <key> [basedir]";
+static const char *tar_tree_usage = "git-tar-tree <key> [basedir]";
 
 static char block[BLOCKSIZE];
 static unsigned long offset;
@@ -40,9 +40,9 @@ static void reliable_write(void *buf, unsigned long size)
                                continue;
                        if (errno == EPIPE)
                                exit(0);
-                       die("tar-tree: %s", strerror(errno));
+                       die("git-tar-tree: %s", strerror(errno));
                } else if (!ret) {
-                       die("tar-tree: disk full?");
+                       die("git-tar-tree: disk full?");
                }
                size -= ret;
                buf += ret;
@@ -73,16 +73,13 @@ static char *get_record(void)
  */
 static void write_trailer(void)
 {
-       memset(block + offset, 0, RECORDSIZE);
-       offset += RECORDSIZE;
+       get_record();
        write_if_needed();
-       memset(block + offset, 0, RECORDSIZE);
-       offset += RECORDSIZE;
+       get_record();
        write_if_needed();
-       if (offset) {
-               memset(block + offset, 0, BLOCKSIZE - offset);
-               reliable_write(block, BLOCKSIZE);
-               offset = 0;
+       while (offset) {
+               get_record();
+               write_if_needed();
        }
 }
 
@@ -205,7 +202,7 @@ static void append_extended_header(char **p, const char *keyword,
        append_char(p, '\n');
 }
 
-static void write_header(const char *, char, const char *, struct path_prefix *,
+static void write_header(const unsigned char *, char, const char *, struct path_prefix *,
                          const char *, unsigned int, void *, unsigned long);
 
 /* stores a pax extended header directly in the block buffer */
@@ -238,7 +235,7 @@ static void write_extended_header(const char *headerfilename, int is_dir,
        free(buffer);
 }
 
-static void write_global_extended_header(const char *sha1)
+static void write_global_extended_header(const unsigned char *sha1)
 {
        char *p;
        unsigned int size;
@@ -253,7 +250,7 @@ static void write_global_extended_header(const char *sha1)
 }
 
 /* stores a ustar header directly in the block buffer */
-static void write_header(const char *sha1, char typeflag, const char *basepath,
+static void write_header(const unsigned char *sha1, char typeflag, const char *basepath,
                          struct path_prefix *prefix, const char *path,
                          unsigned int mode, void *buffer, unsigned long size)
 {
@@ -375,7 +372,7 @@ static void traverse_tree(void *buffer, unsigned long size,
 }
 
 /* get commit time from committer line of commit object */
-time_t commit_time(void * buffer, unsigned long size)
+static time_t commit_time(void * buffer, unsigned long size)
 {
        time_t result = 0;
        char *p = buffer;