Support 'diff=pgm' attribute

diff --git a/builtin-archive.c b/builtin-archive.c
index 5265764b6fa8d0a5dde76473e66f6bc7278fc8aa..7f4e409c998ba4a864bd39032556d71693ff6793 100644 (file)
--- a/builtin-archive.c
+++ b/builtin-archive.c
@@ -35,7 +35,7 @@ static int run_remote_archiver(const char *remote, int argc,
 
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
-               if (!strncmp("--exec=", arg, 7)) {
+               if (!prefixcmp(arg, "--exec=")) {
                        if (exec_at)
                                die("multiple --exec specified");
                        exec = arg + 7;
@@ -62,7 +62,7 @@ static int run_remote_archiver(const char *remote, int argc,
        if (buf[len-1] == '\n')
                buf[--len] = 0;
        if (strcmp(buf, "ACK")) {
-               if (len > 5 && !strncmp(buf, "NACK ", 5))
+               if (len > 5 && !prefixcmp(buf, "NACK "))
                        die("git-archive: NACK %s", buf + 5);
                die("git-archive: protocol error");
        }
@@ -149,7 +149,7 @@ int parse_archive_args(int argc, const char **argv, struct archiver *ar)
 {
        const char *extra_argv[MAX_EXTRA_ARGS];
        int extra_argc = 0;
-       const char *format = NULL; /* might want to default to "tar" */
+       const char *format = "tar";
        const char *base = "";
        int verbose = 0;
        int i;
@@ -166,11 +166,11 @@ int parse_archive_args(int argc, const char **argv, struct archiver *ar)
                        verbose = 1;
                        continue;
                }
-               if (!strncmp(arg, "--format=", 9)) {
+               if (!prefixcmp(arg, "--format=")) {
                        format = arg + 9;
                        continue;
                }
-               if (!strncmp(arg, "--prefix=", 9)) {
+               if (!prefixcmp(arg, "--prefix=")) {
                        base = arg + 9;
                        continue;
                }
@@ -190,8 +190,6 @@ int parse_archive_args(int argc, const char **argv, struct archiver *ar)
        /* We need at least one parameter -- tree-ish */
        if (argc - 1 < i)
                usage(archive_usage);
-       if (!format)
-               die("You must specify an archive format");
        if (init_archiver(format, ar) < 0)
                die("Unknown archive format '%s'", format);
 
@@ -218,7 +216,7 @@ static const char *extract_remote_arg(int *ac, const char **av)
                if (!strcmp(arg, "--"))
                        no_more_options = 1;
                if (!no_more_options) {
-                       if (!strncmp(arg, "--remote=", 9)) {
+                       if (!prefixcmp(arg, "--remote=")) {
                                if (remote)
                                        die("Multiple --remote specified");
                                remote = arg + 9;
@@ -252,6 +250,8 @@ int cmd_archive(int argc, const char **argv, const char *prefix)
 
        memset(&ar, 0, sizeof(ar));
        tree_idx = parse_archive_args(argc, argv, &ar);
+       if (prefix == NULL)
+               prefix = setup_git_directory();
 
        argv += tree_idx;
        parse_treeish_arg(argv, &ar.args, prefix);