make update-index --chmod work with multiple files and --stdin

The patch makes "--chmod=-x" and "--chmod=+x" act like "--add"
and "--remove" to affect the behaviour of the command for the
rest of the path parameters, not just the following one.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/update-index.c b/update-index.c
index 1efac27..e2b2b88 100644 (file)
--- a/update-index.c
+++ b/update-index.c
@@ -328,7 +328,7 @@ static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
        return 0;
 }
 
-static int chmod_path(int flip, const char *path)
+static void chmod_path(int flip, const char *path)
 {
        int pos;
        struct cache_entry *ce;
@@ -336,21 +336,24 @@ static int chmod_path(int flip, const char *path)
 
        pos = cache_name_pos(path, strlen(path));
        if (pos < 0)
-               return -1;
+               goto fail;
        ce = active_cache[pos];
        mode = ntohl(ce->ce_mode);
        if (!S_ISREG(mode))
-               return -1;
+               goto fail;
        switch (flip) {
        case '+':
                ce->ce_mode |= htonl(0111); break;
        case '-':
                ce->ce_mode &= htonl(~0111); break;
        default:
-               return -1;
+               goto fail;
        }
        active_cache_changed = 1;
-       return 0;
+       report("chmod %cx '%s'", flip, path);
+       return;
+ fail:
+       die("git-update-index: cannot chmod %cx '%s'", flip, path);
 }
 
 static struct cache_file cache_file;
@@ -478,6 +481,7 @@ int main(int argc, const char **argv)
        int read_from_stdin = 0;
        const char *prefix = setup_git_directory();
        int prefix_length = prefix ? strlen(prefix) : 0;
+       char set_executable_bit = 0;
 
        git_config(git_default_config);
 
@@ -544,8 +548,7 @@ int main(int argc, const char **argv)
                            !strcmp(path, "--chmod=+x")) {
                                if (argc <= i+1)
                                        die("git-update-index: %s <path>", path);
-                               if (chmod_path(path[8], argv[++i]))
-                                       die("git-update-index: %s cannot chmod %s", path, argv[i]);
+                               set_executable_bit = path[8];
                                continue;
                        }
                        if (!strcmp(path, "--assume-unchanged")) {
@@ -594,6 +597,8 @@ int main(int argc, const char **argv)
                        die("unknown option %s", path);
                }
                update_one(path, prefix, prefix_length);
+               if (set_executable_bit)
+                       chmod_path(set_executable_bit, path);
        }
        if (read_from_stdin) {
                struct strbuf buf;
@@ -608,6 +613,10 @@ int main(int argc, const char **argv)
                        else
                                path_name = buf.buf;
                        update_one(path_name, prefix, prefix_length);
+                       if (set_executable_bit) {
+                               const char *p = prefix_path(prefix, prefix_length, path_name);
+                               chmod_path(set_executable_bit, p);
+                       }
                        if (path_name != buf.buf)
                                free(path_name);
                }