builtin-help: make some internal functions available to other builtins

diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
index 4d4cfec878e468b8ab8a7f055c836c3569443914..f4bea4a322c26a54734286073c5e67444555c2d9 100644 (file)
--- a/builtin-tar-tree.c
+++ b/builtin-tar-tree.c
@@ -1,7 +1,6 @@
 /*
  * Copyright (c) 2005, 2006 Rene Scharfe
  */
-#include <time.h>
 #include "cache.h"
 #include "commit.h"
 #include "tar.h"
@@ -9,7 +8,7 @@
 #include "quote.h"
 
 static const char tar_tree_usage[] =
-"git-tar-tree [--remote=<repo>] <tree-ish> [basedir]\n"
+"git tar-tree [--remote=<repo>] <tree-ish> [basedir]\n"
 "*** Note that this command is now deprecated; use git-archive instead.";
 
 int cmd_tar_tree(int argc, const char **argv, const char *prefix)
@@ -32,7 +31,7 @@ int cmd_tar_tree(int argc, const char **argv, const char *prefix)
        nargv[nargc++] = "git-archive";
        nargv[nargc++] = "--format=tar";
 
-       if (2 <= argc && !strncmp("--remote=", argv[1], 9)) {
+       if (2 <= argc && !prefixcmp(argv[1], "--remote=")) {
                nargv[nargc++] = argv[1];
                argv++;
                argc--;
@@ -75,7 +74,7 @@ int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix)
        char *content = buffer + RECORDSIZE;
        ssize_t n;
 
-       n = xread(0, buffer, HEADERSIZE);
+       n = read_in_full(0, buffer, HEADERSIZE);
        if (n < HEADERSIZE)
                die("git-get-tar-commit-id: read error");
        if (header->typeflag[0] != 'g')
@@ -83,7 +82,7 @@ int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix)
        if (memcmp(content, "52 comment=", 11))
                return 1;
 
-       n = xwrite(1, content + 11, 41);
+       n = write_in_full(1, content + 11, 41);
        if (n < 41)
                die("git-get-tar-commit-id: write error");