mergetool: respect autocrlf by using checkout-index

diff --git a/run-command.c b/run-command.c
index bbb9c777e583c345d25a6651f9ddf7725c10f6af..db9ce59204aa4292e82ccd0aaf052cf4159cecdf 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -111,6 +111,8 @@ int start_command(struct child_process *cmd)
                                        unsetenv(*cmd->env);
                        }
                }
+               if (cmd->preexec_cb)
+                       cmd->preexec_cb();
                if (cmd->git_cmd) {
                        execv_git_cmd(cmd->argv);
                } else {
@@ -271,14 +273,6 @@ int run_command_v_opt(const char **argv, int opt)
        return run_command(&cmd);
 }
 
-int run_command_v_opt_cd(const char **argv, int opt, const char *dir)
-{
-       struct child_process cmd;
-       prepare_run_command_v_opt(&cmd, argv, opt);
-       cmd.dir = dir;
-       return run_command(&cmd);
-}
-
 int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env)
 {
        struct child_process cmd;
@@ -348,3 +342,48 @@ int finish_async(struct async *async)
 #endif
        return ret;
 }
+
+int run_hook(const char *index_file, const char *name, ...)
+{
+       struct child_process hook;
+       const char **argv = NULL, *env[2];
+       char index[PATH_MAX];
+       va_list args;
+       int ret;
+       size_t i = 0, alloc = 0;
+
+       if (access(git_path("hooks/%s", name), X_OK) < 0)
+               return 0;
+
+       va_start(args, name);
+       ALLOC_GROW(argv, i + 1, alloc);
+       argv[i++] = git_path("hooks/%s", name);
+       while (argv[i-1]) {
+               ALLOC_GROW(argv, i + 1, alloc);
+               argv[i++] = va_arg(args, const char *);
+       }
+       va_end(args);
+
+       memset(&hook, 0, sizeof(hook));
+       hook.argv = argv;
+       hook.no_stdin = 1;
+       hook.stdout_to_stderr = 1;
+       if (index_file) {
+               snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+               env[0] = index;
+               env[1] = NULL;
+               hook.env = env;
+       }
+
+       ret = start_command(&hook);
+       free(argv);
+       if (ret) {
+               warning("Could not spawn %s", argv[0]);
+               return ret;
+       }
+       ret = finish_command(&hook);
+       if (ret == -ERR_RUN_COMMAND_WAITPID_SIGNAL)
+               warning("%s exited due to uncaught signal", argv[0]);
+
+       return ret;
+}