+static void compile_submodule_options(const struct grep_opt *opt,
+ const struct pathspec *pathspec,
+ int cached, int untracked,
+ int opt_exclude, int use_index,
+ int pattern_type_arg)
+{
+ struct grep_pat *pattern;
+ int i;
+
+ if (recurse_submodules)
+ argv_array_push(&submodule_options, "--recurse-submodules");
+
+ if (cached)
+ argv_array_push(&submodule_options, "--cached");
+ if (!use_index)
+ argv_array_push(&submodule_options, "--no-index");
+ if (untracked)
+ argv_array_push(&submodule_options, "--untracked");
+ if (opt_exclude > 0)
+ argv_array_push(&submodule_options, "--exclude-standard");
+
+ if (opt->invert)
+ argv_array_push(&submodule_options, "-v");
+ if (opt->ignore_case)
+ argv_array_push(&submodule_options, "-i");
+ if (opt->word_regexp)
+ argv_array_push(&submodule_options, "-w");
+ switch (opt->binary) {
+ case GREP_BINARY_NOMATCH:
+ argv_array_push(&submodule_options, "-I");
+ break;
+ case GREP_BINARY_TEXT:
+ argv_array_push(&submodule_options, "-a");
+ break;
+ default:
+ break;
+ }
+ if (opt->allow_textconv)
+ argv_array_push(&submodule_options, "--textconv");
+ if (opt->max_depth != -1)
+ argv_array_pushf(&submodule_options, "--max-depth=%d",
+ opt->max_depth);
+ if (opt->linenum)
+ argv_array_push(&submodule_options, "-n");
+ if (!opt->pathname)
+ argv_array_push(&submodule_options, "-h");
+ if (!opt->relative)
+ argv_array_push(&submodule_options, "--full-name");
+ if (opt->name_only)
+ argv_array_push(&submodule_options, "-l");
+ if (opt->unmatch_name_only)
+ argv_array_push(&submodule_options, "-L");
+ if (opt->null_following_name)
+ argv_array_push(&submodule_options, "-z");
+ if (opt->count)
+ argv_array_push(&submodule_options, "-c");
+ if (opt->file_break)
+ argv_array_push(&submodule_options, "--break");
+ if (opt->heading)
+ argv_array_push(&submodule_options, "--heading");
+ if (opt->pre_context)
+ argv_array_pushf(&submodule_options, "--before-context=%d",
+ opt->pre_context);
+ if (opt->post_context)
+ argv_array_pushf(&submodule_options, "--after-context=%d",
+ opt->post_context);
+ if (opt->funcname)
+ argv_array_push(&submodule_options, "-p");
+ if (opt->funcbody)
+ argv_array_push(&submodule_options, "-W");
+ if (opt->all_match)
+ argv_array_push(&submodule_options, "--all-match");
+ if (opt->debug)
+ argv_array_push(&submodule_options, "--debug");
+ if (opt->status_only)
+ argv_array_push(&submodule_options, "-q");
+
+ switch (pattern_type_arg) {
+ case GREP_PATTERN_TYPE_BRE:
+ argv_array_push(&submodule_options, "-G");
+ break;
+ case GREP_PATTERN_TYPE_ERE:
+ argv_array_push(&submodule_options, "-E");
+ break;
+ case GREP_PATTERN_TYPE_FIXED:
+ argv_array_push(&submodule_options, "-F");
+ break;
+ case GREP_PATTERN_TYPE_PCRE:
+ argv_array_push(&submodule_options, "-P");
+ break;
+ case GREP_PATTERN_TYPE_UNSPECIFIED:
+ break;
+ }
+
+ for (pattern = opt->pattern_list; pattern != NULL;
+ pattern = pattern->next) {
+ switch (pattern->token) {
+ case GREP_PATTERN:
+ argv_array_pushf(&submodule_options, "-e%s",
+ pattern->pattern);
+ break;
+ case GREP_AND:
+ case GREP_OPEN_PAREN:
+ case GREP_CLOSE_PAREN:
+ case GREP_NOT:
+ case GREP_OR:
+ argv_array_push(&submodule_options, pattern->pattern);
+ break;
+ /* BODY and HEAD are not used by git-grep */
+ case GREP_PATTERN_BODY:
+ case GREP_PATTERN_HEAD:
+ break;
+ }
+ }
+
+ /*
+ * Limit number of threads for child process to use.
+ * This is to prevent potential fork-bomb behavior of git-grep as each
+ * submodule process has its own thread pool.
+ */
+ argv_array_pushf(&submodule_options, "--threads=%d",
+ (num_threads + 1) / 2);
+
+ /* Add Pathspecs */
+ argv_array_push(&submodule_options, "--");
+ for (i = 0; i < pathspec->nr; i++)
+ argv_array_push(&submodule_options,
+ pathspec->items[i].original);
+}
+
+/*
+ * Launch child process to grep contents of a submodule
+ */
+static int grep_submodule_launch(struct grep_opt *opt,
+ const struct grep_source *gs)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+ int status, i;
+ struct work_item *w = opt->output_priv;
+
+ prepare_submodule_repo_env(&cp.env_array);
+
+ /* Add super prefix */
+ argv_array_pushf(&cp.args, "--super-prefix=%s%s/",
+ super_prefix ? super_prefix : "",
+ gs->name);
+ argv_array_push(&cp.args, "grep");
+
+ /* Add options */
+ for (i = 0; i < submodule_options.argc; i++)
+ argv_array_push(&cp.args, submodule_options.argv[i]);
+
+ cp.git_cmd = 1;
+ cp.dir = gs->path;
+
+ /*
+ * Capture output to output buffer and check the return code from the
+ * child process. A '0' indicates a hit, a '1' indicates no hit and
+ * anything else is an error.
+ */
+ status = capture_command(&cp, &w->out, 0);
+ if (status && (status != 1)) {
+ /* flush the buffer */
+ write_or_die(1, w->out.buf, w->out.len);
+ die("process for submodule '%s' failed with exit code: %d",
+ gs->name, status);
+ }
+
+ /* invert the return code to make a hit equal to 1 */
+ return !status;
+}
+
+/*
+ * Prep grep structures for a submodule grep
+ * sha1: the sha1 of the submodule or NULL if using the working tree
+ * filename: name of the submodule including tree name of parent
+ * path: location of the submodule
+ */
+static int grep_submodule(struct grep_opt *opt, const unsigned char *sha1,
+ const char *filename, const char *path)
+{
+ if (!is_submodule_initialized(path))
+ return 0;
+ if (!is_submodule_populated(path))
+ return 0;
+
+#ifndef NO_PTHREADS
+ if (num_threads) {
+ add_work(opt, GREP_SOURCE_SUBMODULE, filename, path, sha1);
+ return 0;
+ } else
+#endif
+ {
+ struct work_item w;
+ int hit;
+
+ grep_source_init(&w.source, GREP_SOURCE_SUBMODULE,
+ filename, path, sha1);
+ strbuf_init(&w.out, 0);
+ opt->output_priv = &w;
+ hit = grep_submodule_launch(opt, &w.source);
+
+ write_or_die(1, w.out.buf, w.out.len);
+
+ grep_source_clear(&w.source);
+ strbuf_release(&w.out);
+ return hit;
+ }
+}
+
+static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec,
+ int cached)