git.txt: update description of the configuration mechanism

[git.git] / submodule.c

diff --git a/submodule.c b/submodule.c
index 50f213e926374e86c23cdbfc730f6d81af4816b8..2f554362347674df1a5ee9904d83a0de530304a6 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -258,7 +258,7 @@ int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
 
 void show_submodule_summary(FILE *f, const char *path,
                unsigned char one[20], unsigned char two[20],
-               unsigned dirty_submodule,
+               unsigned dirty_submodule, const char *meta,
                const char *del, const char *add, const char *reset)
 {
        struct rev_info rev;
@@ -292,15 +292,15 @@ void show_submodule_summary(FILE *f, const char *path,
                return;
        }
 
-       strbuf_addf(&sb, "Submodule %s %s..", path,
+       strbuf_addf(&sb, "%sSubmodule %s %s..", meta, path,
                        find_unique_abbrev(one, DEFAULT_ABBREV));
        if (!fast_backward && !fast_forward)
                strbuf_addch(&sb, '.');
        strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV));
        if (message)
-               strbuf_addf(&sb, " %s\n", message);
+               strbuf_addf(&sb, " %s%s\n", message, reset);
        else
-               strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : "");
+               strbuf_addf(&sb, "%s:%s\n", fast_backward ? " (rewind)" : "", reset);
        fwrite(sb.buf, sb.len, 1, f);
 
        if (!message) {
@@ -759,6 +759,86 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked)
        return dirty_submodule;
 }
 
+int submodule_uses_gitfile(const char *path)
+{
+       struct child_process cp;
+       const char *argv[] = {
+               "submodule",
+               "foreach",
+               "--quiet",
+               "--recursive",
+               "test -f .git",
+               NULL,
+       };
+       struct strbuf buf = STRBUF_INIT;
+       const char *git_dir;
+
+       strbuf_addf(&buf, "%s/.git", path);
+       git_dir = read_gitfile(buf.buf);
+       if (!git_dir) {
+               strbuf_release(&buf);
+               return 0;
+       }
+       strbuf_release(&buf);
+
+       /* Now test that all nested submodules use a gitfile too */
+       memset(&cp, 0, sizeof(cp));
+       cp.argv = argv;
+       cp.env = local_repo_env;
+       cp.git_cmd = 1;
+       cp.no_stdin = 1;
+       cp.no_stderr = 1;
+       cp.no_stdout = 1;
+       cp.dir = path;
+       if (run_command(&cp))
+               return 0;
+
+       return 1;
+}
+
+int ok_to_remove_submodule(const char *path)
+{
+       struct stat st;
+       ssize_t len;
+       struct child_process cp;
+       const char *argv[] = {
+               "status",
+               "--porcelain",
+               "-u",
+               "--ignore-submodules=none",
+               NULL,
+       };
+       struct strbuf buf = STRBUF_INIT;
+       int ok_to_remove = 1;
+
+       if ((lstat(path, &st) < 0) || is_empty_dir(path))
+               return 1;
+
+       if (!submodule_uses_gitfile(path))
+               return 0;
+
+       memset(&cp, 0, sizeof(cp));
+       cp.argv = argv;
+       cp.env = local_repo_env;
+       cp.git_cmd = 1;
+       cp.no_stdin = 1;
+       cp.out = -1;
+       cp.dir = path;
+       if (start_command(&cp))
+               die("Could not run 'git status --porcelain -uall --ignore-submodules=none' in submodule %s", path);
+
+       len = strbuf_read(&buf, cp.out, 1024);
+       if (len > 2)
+               ok_to_remove = 0;
+       close(cp.out);
+
+       if (finish_command(&cp))
+               die("'git status --porcelain -uall --ignore-submodules=none' failed in submodule %s", path);
+
+       strbuf_release(&buf);
+       return ok_to_remove;
+}
+
 static int find_first_merges(struct object_array *result, const char *path,
                struct commit *a, struct commit *b)
 {