git: make super-prefix option

diff --git a/git.c b/git.c
index 1c61151758531889e2a2e60e66799283240dc89a..469a83f2b42ce74dba640c8ceef93a1b6f4c76c9 100644 (file)
--- a/git.c
+++ b/git.c
@@ -164,6 +164,20 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
                        setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1);
                        if (envchanged)
                                *envchanged = 1;
+               } else if (!strcmp(cmd, "--super-prefix")) {
+                       if (*argc < 2) {
+                               fprintf(stderr, "No prefix given for --super-prefix.\n" );
+                               usage(git_usage_string);
+                       }
+                       setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1);
+                       if (envchanged)
+                               *envchanged = 1;
+                       (*argv)++;
+                       (*argc)--;
+               } else if (skip_prefix(cmd, "--super-prefix=", &cmd)) {
+                       setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1);
+                       if (envchanged)
+                               *envchanged = 1;
                } else if (!strcmp(cmd, "--bare")) {
                        char *cwd = xgetcwd();
                        is_bare_repository_cfg = 1;
@@ -310,6 +324,7 @@ static int handle_alias(int *argcp, const char ***argv)
  * RUN_SETUP for reading from the configuration file.
  */
 #define NEED_WORK_TREE         (1<<3)
+#define SUPPORT_SUPER_PREFIX   (1<<4)
 
 struct cmd_struct {
        const char *cmd;
@@ -344,6 +359,13 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
        }
        commit_pager_choice();
 
+       if (!help && get_super_prefix()) {
+               if (!(p->option & SUPPORT_SUPER_PREFIX))
+                       die("%s doesn't support --super-prefix", p->cmd);
+               if (prefix)
+                       die("can't use --super-prefix from a subdirectory");
+       }
+
        if (!help && p->option & NEED_WORK_TREE)
                setup_work_tree();
 
@@ -558,6 +580,9 @@ static void execv_dashed_external(const char **argv)
        const char *tmp;
        int status;
 
+       if (get_super_prefix())
+               die("%s doesn't support --super-prefix", argv[0]);
+
        if (use_pager == -1)
                use_pager = check_pager_config(argv[0]);
        commit_pager_choice();