Andrew's git / gitweb.git / builtin/grep.c
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builtin / grep.con commit commit-tree: do not complete line in -F input (c818e74)
   1/*
   2 * Builtin "git grep"
   3 *
   4 * Copyright (c) 2006 Junio C Hamano
   5 */
   6#include "cache.h"
   7#include "repository.h"
   8#include "config.h"
   9#include "blob.h"
  10#include "tree.h"
  11#include "commit.h"
  12#include "tag.h"
  13#include "tree-walk.h"
  14#include "builtin.h"
  15#include "parse-options.h"
  16#include "string-list.h"
  17#include "run-command.h"
  18#include "userdiff.h"
  19#include "grep.h"
  20#include "quote.h"
  21#include "dir.h"
  22#include "pathspec.h"
  23#include "submodule.h"
  24#include "submodule-config.h"
  25
  26static char const * const grep_usage[] = {
  27        N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
  28        NULL
  29};
  30
  31static const char *super_prefix;
  32static int recurse_submodules;
  33static struct argv_array submodule_options = ARGV_ARRAY_INIT;
  34static const char *parent_basename;
  35
  36static int grep_submodule_launch(struct grep_opt *opt,
  37                                 const struct grep_source *gs);
  38
  39#define GREP_NUM_THREADS_DEFAULT 8
  40static int num_threads;
  41
  42#ifndef NO_PTHREADS
  43static pthread_t *threads;
  44
  45/* We use one producer thread and THREADS consumer
  46 * threads. The producer adds struct work_items to 'todo' and the
  47 * consumers pick work items from the same array.
  48 */
  49struct work_item {
  50        struct grep_source source;
  51        char done;
  52        struct strbuf out;
  53};
  54
  55/* In the range [todo_done, todo_start) in 'todo' we have work_items
  56 * that have been or are processed by a consumer thread. We haven't
  57 * written the result for these to stdout yet.
  58 *
  59 * The work_items in [todo_start, todo_end) are waiting to be picked
  60 * up by a consumer thread.
  61 *
  62 * The ranges are modulo TODO_SIZE.
  63 */
  64#define TODO_SIZE 128
  65static struct work_item todo[TODO_SIZE];
  66static int todo_start;
  67static int todo_end;
  68static int todo_done;
  69
  70/* Has all work items been added? */
  71static int all_work_added;
  72
  73/* This lock protects all the variables above. */
  74static pthread_mutex_t grep_mutex;
  75
  76static inline void grep_lock(void)
  77{
  78        assert(num_threads);
  79        pthread_mutex_lock(&grep_mutex);
  80}
  81
  82static inline void grep_unlock(void)
  83{
  84        assert(num_threads);
  85        pthread_mutex_unlock(&grep_mutex);
  86}
  87
  88/* Signalled when a new work_item is added to todo. */
  89static pthread_cond_t cond_add;
  90
  91/* Signalled when the result from one work_item is written to
  92 * stdout.
  93 */
  94static pthread_cond_t cond_write;
  95
  96/* Signalled when we are finished with everything. */
  97static pthread_cond_t cond_result;
  98
  99static int skip_first_line;
 100
 101static void add_work(struct grep_opt *opt, enum grep_source_type type,
 102                     const char *name, const char *path, const void *id)
 103{
 104        grep_lock();
 105
 106        while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
 107                pthread_cond_wait(&cond_write, &grep_mutex);
 108        }
 109
 110        grep_source_init(&todo[todo_end].source, type, name, path, id);
 111        if (opt->binary != GREP_BINARY_TEXT)
 112                grep_source_load_driver(&todo[todo_end].source);
 113        todo[todo_end].done = 0;
 114        strbuf_reset(&todo[todo_end].out);
 115        todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
 116
 117        pthread_cond_signal(&cond_add);
 118        grep_unlock();
 119}
 120
 121static struct work_item *get_work(void)
 122{
 123        struct work_item *ret;
 124
 125        grep_lock();
 126        while (todo_start == todo_end && !all_work_added) {
 127                pthread_cond_wait(&cond_add, &grep_mutex);
 128        }
 129
 130        if (todo_start == todo_end && all_work_added) {
 131                ret = NULL;
 132        } else {
 133                ret = &todo[todo_start];
 134                todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
 135        }
 136        grep_unlock();
 137        return ret;
 138}
 139
 140static void work_done(struct work_item *w)
 141{
 142        int old_done;
 143
 144        grep_lock();
 145        w->done = 1;
 146        old_done = todo_done;
 147        for(; todo[todo_done].done && todo_done != todo_start;
 148            todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
 149                w = &todo[todo_done];
 150                if (w->out.len) {
 151                        const char *p = w->out.buf;
 152                        size_t len = w->out.len;
 153
 154                        /* Skip the leading hunk mark of the first file. */
 155                        if (skip_first_line) {
 156                                while (len) {
 157                                        len--;
 158                                        if (*p++ == '\n')
 159                                                break;
 160                                }
 161                                skip_first_line = 0;
 162                        }
 163
 164                        write_or_die(1, p, len);
 165                }
 166                grep_source_clear(&w->source);
 167        }
 168
 169        if (old_done != todo_done)
 170                pthread_cond_signal(&cond_write);
 171
 172        if (all_work_added && todo_done == todo_end)
 173                pthread_cond_signal(&cond_result);
 174
 175        grep_unlock();
 176}
 177
 178static void *run(void *arg)
 179{
 180        int hit = 0;
 181        struct grep_opt *opt = arg;
 182
 183        while (1) {
 184                struct work_item *w = get_work();
 185                if (!w)
 186                        break;
 187
 188                opt->output_priv = w;
 189                if (w->source.type == GREP_SOURCE_SUBMODULE)
 190                        hit |= grep_submodule_launch(opt, &w->source);
 191                else
 192                        hit |= grep_source(opt, &w->source);
 193                grep_source_clear_data(&w->source);
 194                work_done(w);
 195        }
 196        free_grep_patterns(arg);
 197        free(arg);
 198
 199        return (void*) (intptr_t) hit;
 200}
 201
 202static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
 203{
 204        struct work_item *w = opt->output_priv;
 205        strbuf_add(&w->out, buf, size);
 206}
 207
 208static void start_threads(struct grep_opt *opt)
 209{
 210        int i;
 211
 212        pthread_mutex_init(&grep_mutex, NULL);
 213        pthread_mutex_init(&grep_read_mutex, NULL);
 214        pthread_mutex_init(&grep_attr_mutex, NULL);
 215        pthread_cond_init(&cond_add, NULL);
 216        pthread_cond_init(&cond_write, NULL);
 217        pthread_cond_init(&cond_result, NULL);
 218        grep_use_locks = 1;
 219
 220        for (i = 0; i < ARRAY_SIZE(todo); i++) {
 221                strbuf_init(&todo[i].out, 0);
 222        }
 223
 224        threads = xcalloc(num_threads, sizeof(*threads));
 225        for (i = 0; i < num_threads; i++) {
 226                int err;
 227                struct grep_opt *o = grep_opt_dup(opt);
 228                o->output = strbuf_out;
 229                if (i)
 230                        o->debug = 0;
 231                compile_grep_patterns(o);
 232                err = pthread_create(&threads[i], NULL, run, o);
 233
 234                if (err)
 235                        die(_("grep: failed to create thread: %s"),
 236                            strerror(err));
 237        }
 238}
 239
 240static int wait_all(void)
 241{
 242        int hit = 0;
 243        int i;
 244
 245        grep_lock();
 246        all_work_added = 1;
 247
 248        /* Wait until all work is done. */
 249        while (todo_done != todo_end)
 250                pthread_cond_wait(&cond_result, &grep_mutex);
 251
 252        /* Wake up all the consumer threads so they can see that there
 253         * is no more work to do.
 254         */
 255        pthread_cond_broadcast(&cond_add);
 256        grep_unlock();
 257
 258        for (i = 0; i < num_threads; i++) {
 259                void *h;
 260                pthread_join(threads[i], &h);
 261                hit |= (int) (intptr_t) h;
 262        }
 263
 264        free(threads);
 265
 266        pthread_mutex_destroy(&grep_mutex);
 267        pthread_mutex_destroy(&grep_read_mutex);
 268        pthread_mutex_destroy(&grep_attr_mutex);
 269        pthread_cond_destroy(&cond_add);
 270        pthread_cond_destroy(&cond_write);
 271        pthread_cond_destroy(&cond_result);
 272        grep_use_locks = 0;
 273
 274        return hit;
 275}
 276#else /* !NO_PTHREADS */
 277
 278static int wait_all(void)
 279{
 280        return 0;
 281}
 282#endif
 283
 284static int grep_cmd_config(const char *var, const char *value, void *cb)
 285{
 286        int st = grep_config(var, value, cb);
 287        if (git_default_config(var, value, cb) < 0)
 288                st = -1;
 289
 290        if (!strcmp(var, "grep.threads")) {
 291                num_threads = git_config_int(var, value);
 292                if (num_threads < 0)
 293                        die(_("invalid number of threads specified (%d) for %s"),
 294                            num_threads, var);
 295#ifdef NO_PTHREADS
 296                else if (num_threads && num_threads != 1) {
 297                        /*
 298                         * TRANSLATORS: %s is the configuration
 299                         * variable for tweaking threads, currently
 300                         * grep.threads
 301                         */
 302                        warning(_("no threads support, ignoring %s"), var);
 303                        num_threads = 0;
 304                }
 305#endif
 306        }
 307
 308        if (!strcmp(var, "submodule.recurse"))
 309                recurse_submodules = git_config_bool(var, value);
 310
 311        return st;
 312}
 313
 314static void *lock_and_read_oid_file(const struct object_id *oid, enum object_type *type, unsigned long *size)
 315{
 316        void *data;
 317
 318        grep_read_lock();
 319        data = read_sha1_file(oid->hash, type, size);
 320        grep_read_unlock();
 321        return data;
 322}
 323
 324static int grep_oid(struct grep_opt *opt, const struct object_id *oid,
 325                     const char *filename, int tree_name_len,
 326                     const char *path)
 327{
 328        struct strbuf pathbuf = STRBUF_INIT;
 329
 330        if (super_prefix) {
 331                strbuf_add(&pathbuf, filename, tree_name_len);
 332                strbuf_addstr(&pathbuf, super_prefix);
 333                strbuf_addstr(&pathbuf, filename + tree_name_len);
 334        } else {
 335                strbuf_addstr(&pathbuf, filename);
 336        }
 337
 338        if (opt->relative && opt->prefix_length) {
 339                char *name = strbuf_detach(&pathbuf, NULL);
 340                quote_path_relative(name + tree_name_len, opt->prefix, &pathbuf);
 341                strbuf_insert(&pathbuf, 0, name, tree_name_len);
 342                free(name);
 343        }
 344
 345#ifndef NO_PTHREADS
 346        if (num_threads) {
 347                add_work(opt, GREP_SOURCE_OID, pathbuf.buf, path, oid);
 348                strbuf_release(&pathbuf);
 349                return 0;
 350        } else
 351#endif
 352        {
 353                struct grep_source gs;
 354                int hit;
 355
 356                grep_source_init(&gs, GREP_SOURCE_OID, pathbuf.buf, path, oid);
 357                strbuf_release(&pathbuf);
 358                hit = grep_source(opt, &gs);
 359
 360                grep_source_clear(&gs);
 361                return hit;
 362        }
 363}
 364
 365static int grep_file(struct grep_opt *opt, const char *filename)
 366{
 367        struct strbuf buf = STRBUF_INIT;
 368
 369        if (super_prefix)
 370                strbuf_addstr(&buf, super_prefix);
 371        strbuf_addstr(&buf, filename);
 372
 373        if (opt->relative && opt->prefix_length) {
 374                char *name = strbuf_detach(&buf, NULL);
 375                quote_path_relative(name, opt->prefix, &buf);
 376                free(name);
 377        }
 378
 379#ifndef NO_PTHREADS
 380        if (num_threads) {
 381                add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename);
 382                strbuf_release(&buf);
 383                return 0;
 384        } else
 385#endif
 386        {
 387                struct grep_source gs;
 388                int hit;
 389
 390                grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
 391                strbuf_release(&buf);
 392                hit = grep_source(opt, &gs);
 393
 394                grep_source_clear(&gs);
 395                return hit;
 396        }
 397}
 398
 399static void append_path(struct grep_opt *opt, const void *data, size_t len)
 400{
 401        struct string_list *path_list = opt->output_priv;
 402
 403        if (len == 1 && *(const char *)data == '\0')
 404                return;
 405        string_list_append(path_list, xstrndup(data, len));
 406}
 407
 408static void run_pager(struct grep_opt *opt, const char *prefix)
 409{
 410        struct string_list *path_list = opt->output_priv;
 411        struct child_process child = CHILD_PROCESS_INIT;
 412        int i, status;
 413
 414        for (i = 0; i < path_list->nr; i++)
 415                argv_array_push(&child.args, path_list->items[i].string);
 416        child.dir = prefix;
 417        child.use_shell = 1;
 418
 419        status = run_command(&child);
 420        if (status)
 421                exit(status);
 422}
 423
 424static void compile_submodule_options(const struct grep_opt *opt,
 425                                      const char **argv,
 426                                      int cached, int untracked,
 427                                      int opt_exclude, int use_index,
 428                                      int pattern_type_arg)
 429{
 430        struct grep_pat *pattern;
 431
 432        if (recurse_submodules)
 433                argv_array_push(&submodule_options, "--recurse-submodules");
 434
 435        if (cached)
 436                argv_array_push(&submodule_options, "--cached");
 437        if (!use_index)
 438                argv_array_push(&submodule_options, "--no-index");
 439        if (untracked)
 440                argv_array_push(&submodule_options, "--untracked");
 441        if (opt_exclude > 0)
 442                argv_array_push(&submodule_options, "--exclude-standard");
 443
 444        if (opt->invert)
 445                argv_array_push(&submodule_options, "-v");
 446        if (opt->ignore_case)
 447                argv_array_push(&submodule_options, "-i");
 448        if (opt->word_regexp)
 449                argv_array_push(&submodule_options, "-w");
 450        switch (opt->binary) {
 451        case GREP_BINARY_NOMATCH:
 452                argv_array_push(&submodule_options, "-I");
 453                break;
 454        case GREP_BINARY_TEXT:
 455                argv_array_push(&submodule_options, "-a");
 456                break;
 457        default:
 458                break;
 459        }
 460        if (opt->allow_textconv)
 461                argv_array_push(&submodule_options, "--textconv");
 462        if (opt->max_depth != -1)
 463                argv_array_pushf(&submodule_options, "--max-depth=%d",
 464                                 opt->max_depth);
 465        if (opt->linenum)
 466                argv_array_push(&submodule_options, "-n");
 467        if (!opt->pathname)
 468                argv_array_push(&submodule_options, "-h");
 469        if (!opt->relative)
 470                argv_array_push(&submodule_options, "--full-name");
 471        if (opt->name_only)
 472                argv_array_push(&submodule_options, "-l");
 473        if (opt->unmatch_name_only)
 474                argv_array_push(&submodule_options, "-L");
 475        if (opt->null_following_name)
 476                argv_array_push(&submodule_options, "-z");
 477        if (opt->count)
 478                argv_array_push(&submodule_options, "-c");
 479        if (opt->file_break)
 480                argv_array_push(&submodule_options, "--break");
 481        if (opt->heading)
 482                argv_array_push(&submodule_options, "--heading");
 483        if (opt->pre_context)
 484                argv_array_pushf(&submodule_options, "--before-context=%d",
 485                                 opt->pre_context);
 486        if (opt->post_context)
 487                argv_array_pushf(&submodule_options, "--after-context=%d",
 488                                 opt->post_context);
 489        if (opt->funcname)
 490                argv_array_push(&submodule_options, "-p");
 491        if (opt->funcbody)
 492                argv_array_push(&submodule_options, "-W");
 493        if (opt->all_match)
 494                argv_array_push(&submodule_options, "--all-match");
 495        if (opt->debug)
 496                argv_array_push(&submodule_options, "--debug");
 497        if (opt->status_only)
 498                argv_array_push(&submodule_options, "-q");
 499
 500        switch (pattern_type_arg) {
 501        case GREP_PATTERN_TYPE_BRE:
 502                argv_array_push(&submodule_options, "-G");
 503                break;
 504        case GREP_PATTERN_TYPE_ERE:
 505                argv_array_push(&submodule_options, "-E");
 506                break;
 507        case GREP_PATTERN_TYPE_FIXED:
 508                argv_array_push(&submodule_options, "-F");
 509                break;
 510        case GREP_PATTERN_TYPE_PCRE:
 511                argv_array_push(&submodule_options, "-P");
 512                break;
 513        case GREP_PATTERN_TYPE_UNSPECIFIED:
 514                break;
 515        default:
 516                die("BUG: Added a new grep pattern type without updating switch statement");
 517        }
 518
 519        for (pattern = opt->pattern_list; pattern != NULL;
 520             pattern = pattern->next) {
 521                switch (pattern->token) {
 522                case GREP_PATTERN:
 523                        argv_array_pushf(&submodule_options, "-e%s",
 524                                         pattern->pattern);
 525                        break;
 526                case GREP_AND:
 527                case GREP_OPEN_PAREN:
 528                case GREP_CLOSE_PAREN:
 529                case GREP_NOT:
 530                case GREP_OR:
 531                        argv_array_push(&submodule_options, pattern->pattern);
 532                        break;
 533                /* BODY and HEAD are not used by git-grep */
 534                case GREP_PATTERN_BODY:
 535                case GREP_PATTERN_HEAD:
 536                        break;
 537                }
 538        }
 539
 540        /*
 541         * Limit number of threads for child process to use.
 542         * This is to prevent potential fork-bomb behavior of git-grep as each
 543         * submodule process has its own thread pool.
 544         */
 545        argv_array_pushf(&submodule_options, "--threads=%d",
 546                         DIV_ROUND_UP(num_threads, 2));
 547
 548        /* Add Pathspecs */
 549        argv_array_push(&submodule_options, "--");
 550        for (; *argv; argv++)
 551                argv_array_push(&submodule_options, *argv);
 552}
 553
 554/*
 555 * Launch child process to grep contents of a submodule
 556 */
 557static int grep_submodule_launch(struct grep_opt *opt,
 558                                 const struct grep_source *gs)
 559{
 560        struct child_process cp = CHILD_PROCESS_INIT;
 561        int status, i;
 562        const char *end_of_base;
 563        const char *name;
 564        struct strbuf child_output = STRBUF_INIT;
 565
 566        end_of_base = strchr(gs->name, ':');
 567        if (gs->identifier && end_of_base)
 568                name = end_of_base + 1;
 569        else
 570                name = gs->name;
 571
 572        prepare_submodule_repo_env(&cp.env_array);
 573        argv_array_push(&cp.env_array, GIT_DIR_ENVIRONMENT);
 574
 575        if (opt->relative && opt->prefix_length)
 576                argv_array_pushf(&cp.env_array, "%s=%s",
 577                                 GIT_TOPLEVEL_PREFIX_ENVIRONMENT,
 578                                 opt->prefix);
 579
 580        /* Add super prefix */
 581        argv_array_pushf(&cp.args, "--super-prefix=%s%s/",
 582                         super_prefix ? super_prefix : "",
 583                         name);
 584        argv_array_push(&cp.args, "grep");
 585
 586        /*
 587         * Add basename of parent project
 588         * When performing grep on a tree object the filename is prefixed
 589         * with the object's name: 'tree-name:filename'.  In order to
 590         * provide uniformity of output we want to pass the name of the
 591         * parent project's object name to the submodule so the submodule can
 592         * prefix its output with the parent's name and not its own OID.
 593         */
 594        if (gs->identifier && end_of_base)
 595                argv_array_pushf(&cp.args, "--parent-basename=%.*s",
 596                                 (int) (end_of_base - gs->name),
 597                                 gs->name);
 598
 599        /* Add options */
 600        for (i = 0; i < submodule_options.argc; i++) {
 601                /*
 602                 * If there is a tree identifier for the submodule, add the
 603                 * rev after adding the submodule options but before the
 604                 * pathspecs.  To do this we listen for the '--' and insert the
 605                 * oid before pushing the '--' onto the child process argv
 606                 * array.
 607                 */
 608                if (gs->identifier &&
 609                    !strcmp("--", submodule_options.argv[i])) {
 610                        argv_array_push(&cp.args, oid_to_hex(gs->identifier));
 611                }
 612
 613                argv_array_push(&cp.args, submodule_options.argv[i]);
 614        }
 615
 616        cp.git_cmd = 1;
 617        cp.dir = gs->path;
 618
 619        /*
 620         * Capture output to output buffer and check the return code from the
 621         * child process.  A '0' indicates a hit, a '1' indicates no hit and
 622         * anything else is an error.
 623         */
 624        status = capture_command(&cp, &child_output, 0);
 625        if (status && (status != 1)) {
 626                /* flush the buffer */
 627                write_or_die(1, child_output.buf, child_output.len);
 628                die("process for submodule '%s' failed with exit code: %d",
 629                    gs->name, status);
 630        }
 631
 632        opt->output(opt, child_output.buf, child_output.len);
 633        strbuf_release(&child_output);
 634        /* invert the return code to make a hit equal to 1 */
 635        return !status;
 636}
 637
 638/*
 639 * Prep grep structures for a submodule grep
 640 * oid: the oid of the submodule or NULL if using the working tree
 641 * filename: name of the submodule including tree name of parent
 642 * path: location of the submodule
 643 */
 644static int grep_submodule(struct grep_opt *opt, const struct object_id *oid,
 645                          const char *filename, const char *path)
 646{
 647        if (!is_submodule_active(the_repository, path))
 648                return 0;
 649        if (!is_submodule_populated_gently(path, NULL)) {
 650                /*
 651                 * If searching history, check for the presence of the
 652                 * submodule's gitdir before skipping the submodule.
 653                 */
 654                if (oid) {
 655                        const struct submodule *sub =
 656                                        submodule_from_path(null_sha1, path);
 657                        if (sub)
 658                                path = git_path("modules/%s", sub->name);
 659
 660                        if (!(is_directory(path) && is_git_directory(path)))
 661                                return 0;
 662                } else {
 663                        return 0;
 664                }
 665        }
 666
 667#ifndef NO_PTHREADS
 668        if (num_threads) {
 669                add_work(opt, GREP_SOURCE_SUBMODULE, filename, path, oid);
 670                return 0;
 671        } else
 672#endif
 673        {
 674                struct grep_source gs;
 675                int hit;
 676
 677                grep_source_init(&gs, GREP_SOURCE_SUBMODULE,
 678                                 filename, path, oid);
 679                hit = grep_submodule_launch(opt, &gs);
 680
 681                grep_source_clear(&gs);
 682                return hit;
 683        }
 684}
 685
 686static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec,
 687                      int cached)
 688{
 689        int hit = 0;
 690        int nr;
 691        struct strbuf name = STRBUF_INIT;
 692        int name_base_len = 0;
 693        if (super_prefix) {
 694                name_base_len = strlen(super_prefix);
 695                strbuf_addstr(&name, super_prefix);
 696        }
 697
 698        read_cache();
 699
 700        for (nr = 0; nr < active_nr; nr++) {
 701                const struct cache_entry *ce = active_cache[nr];
 702                strbuf_setlen(&name, name_base_len);
 703                strbuf_addstr(&name, ce->name);
 704
 705                if (S_ISREG(ce->ce_mode) &&
 706                    match_pathspec(pathspec, name.buf, name.len, 0, NULL,
 707                                   S_ISDIR(ce->ce_mode) ||
 708                                   S_ISGITLINK(ce->ce_mode))) {
 709                        /*
 710                         * If CE_VALID is on, we assume worktree file and its
 711                         * cache entry are identical, even if worktree file has
 712                         * been modified, so use cache version instead
 713                         */
 714                        if (cached || (ce->ce_flags & CE_VALID) ||
 715                            ce_skip_worktree(ce)) {
 716                                if (ce_stage(ce) || ce_intent_to_add(ce))
 717                                        continue;
 718                                hit |= grep_oid(opt, &ce->oid, ce->name,
 719                                                 0, ce->name);
 720                        } else {
 721                                hit |= grep_file(opt, ce->name);
 722                        }
 723                } else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
 724                           submodule_path_match(pathspec, name.buf, NULL)) {
 725                        hit |= grep_submodule(opt, NULL, ce->name, ce->name);
 726                } else {
 727                        continue;
 728                }
 729
 730                if (ce_stage(ce)) {
 731                        do {
 732                                nr++;
 733                        } while (nr < active_nr &&
 734                                 !strcmp(ce->name, active_cache[nr]->name));
 735                        nr--; /* compensate for loop control */
 736                }
 737                if (hit && opt->status_only)
 738                        break;
 739        }
 740
 741        strbuf_release(&name);
 742        return hit;
 743}
 744
 745static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
 746                     struct tree_desc *tree, struct strbuf *base, int tn_len,
 747                     int check_attr)
 748{
 749        int hit = 0;
 750        enum interesting match = entry_not_interesting;
 751        struct name_entry entry;
 752        int old_baselen = base->len;
 753        struct strbuf name = STRBUF_INIT;
 754        int name_base_len = 0;
 755        if (super_prefix) {
 756                strbuf_addstr(&name, super_prefix);
 757                name_base_len = name.len;
 758        }
 759
 760        while (tree_entry(tree, &entry)) {
 761                int te_len = tree_entry_len(&entry);
 762
 763                if (match != all_entries_interesting) {
 764                        strbuf_addstr(&name, base->buf + tn_len);
 765                        match = tree_entry_interesting(&entry, &name,
 766                                                       0, pathspec);
 767                        strbuf_setlen(&name, name_base_len);
 768
 769                        if (match == all_entries_not_interesting)
 770                                break;
 771                        if (match == entry_not_interesting)
 772                                continue;
 773                }
 774
 775                strbuf_add(base, entry.path, te_len);
 776
 777                if (S_ISREG(entry.mode)) {
 778                        hit |= grep_oid(opt, entry.oid, base->buf, tn_len,
 779                                         check_attr ? base->buf + tn_len : NULL);
 780                } else if (S_ISDIR(entry.mode)) {
 781                        enum object_type type;
 782                        struct tree_desc sub;
 783                        void *data;
 784                        unsigned long size;
 785
 786                        data = lock_and_read_oid_file(entry.oid, &type, &size);
 787                        if (!data)
 788                                die(_("unable to read tree (%s)"),
 789                                    oid_to_hex(entry.oid));
 790
 791                        strbuf_addch(base, '/');
 792                        init_tree_desc(&sub, data, size);
 793                        hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
 794                                         check_attr);
 795                        free(data);
 796                } else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
 797                        hit |= grep_submodule(opt, entry.oid, base->buf,
 798                                              base->buf + tn_len);
 799                }
 800
 801                strbuf_setlen(base, old_baselen);
 802
 803                if (hit && opt->status_only)
 804                        break;
 805        }
 806
 807        strbuf_release(&name);
 808        return hit;
 809}
 810
 811static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
 812                       struct object *obj, const char *name, const char *path)
 813{
 814        if (obj->type == OBJ_BLOB)
 815                return grep_oid(opt, &obj->oid, name, 0, path);
 816        if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
 817                struct tree_desc tree;
 818                void *data;
 819                unsigned long size;
 820                struct strbuf base;
 821                int hit, len;
 822
 823                grep_read_lock();
 824                data = read_object_with_reference(obj->oid.hash, tree_type,
 825                                                  &size, NULL);
 826                grep_read_unlock();
 827
 828                if (!data)
 829                        die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
 830
 831                /* Use parent's name as base when recursing submodules */
 832                if (recurse_submodules && parent_basename)
 833                        name = parent_basename;
 834
 835                len = name ? strlen(name) : 0;
 836                strbuf_init(&base, PATH_MAX + len + 1);
 837                if (len) {
 838                        strbuf_add(&base, name, len);
 839                        strbuf_addch(&base, ':');
 840                }
 841                init_tree_desc(&tree, data, size);
 842                hit = grep_tree(opt, pathspec, &tree, &base, base.len,
 843                                obj->type == OBJ_COMMIT);
 844                strbuf_release(&base);
 845                free(data);
 846                return hit;
 847        }
 848        die(_("unable to grep from object of type %s"), typename(obj->type));
 849}
 850
 851static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
 852                        const struct object_array *list)
 853{
 854        unsigned int i;
 855        int hit = 0;
 856        const unsigned int nr = list->nr;
 857
 858        for (i = 0; i < nr; i++) {
 859                struct object *real_obj;
 860                real_obj = deref_tag(list->objects[i].item, NULL, 0);
 861
 862                /* load the gitmodules file for this rev */
 863                if (recurse_submodules) {
 864                        submodule_free();
 865                        gitmodules_config_sha1(real_obj->oid.hash);
 866                }
 867                if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) {
 868                        hit = 1;
 869                        if (opt->status_only)
 870                                break;
 871                }
 872        }
 873        return hit;
 874}
 875
 876static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
 877                          int exc_std, int use_index)
 878{
 879        struct dir_struct dir;
 880        int i, hit = 0;
 881
 882        memset(&dir, 0, sizeof(dir));
 883        if (!use_index)
 884                dir.flags |= DIR_NO_GITLINKS;
 885        if (exc_std)
 886                setup_standard_excludes(&dir);
 887
 888        fill_directory(&dir, &the_index, pathspec);
 889        for (i = 0; i < dir.nr; i++) {
 890                if (!dir_path_match(dir.entries[i], pathspec, 0, NULL))
 891                        continue;
 892                hit |= grep_file(opt, dir.entries[i]->name);
 893                if (hit && opt->status_only)
 894                        break;
 895        }
 896        return hit;
 897}
 898
 899static int context_callback(const struct option *opt, const char *arg,
 900                            int unset)
 901{
 902        struct grep_opt *grep_opt = opt->value;
 903        int value;
 904        const char *endp;
 905
 906        if (unset) {
 907                grep_opt->pre_context = grep_opt->post_context = 0;
 908                return 0;
 909        }
 910        value = strtol(arg, (char **)&endp, 10);
 911        if (*endp) {
 912                return error(_("switch `%c' expects a numerical value"),
 913                             opt->short_name);
 914        }
 915        grep_opt->pre_context = grep_opt->post_context = value;
 916        return 0;
 917}
 918
 919static int file_callback(const struct option *opt, const char *arg, int unset)
 920{
 921        struct grep_opt *grep_opt = opt->value;
 922        int from_stdin = !strcmp(arg, "-");
 923        FILE *patterns;
 924        int lno = 0;
 925        struct strbuf sb = STRBUF_INIT;
 926
 927        patterns = from_stdin ? stdin : fopen(arg, "r");
 928        if (!patterns)
 929                die_errno(_("cannot open '%s'"), arg);
 930        while (strbuf_getline(&sb, patterns) == 0) {
 931                /* ignore empty line like grep does */
 932                if (sb.len == 0)
 933                        continue;
 934
 935                append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
 936                                GREP_PATTERN);
 937        }
 938        if (!from_stdin)
 939                fclose(patterns);
 940        strbuf_release(&sb);
 941        return 0;
 942}
 943
 944static int not_callback(const struct option *opt, const char *arg, int unset)
 945{
 946        struct grep_opt *grep_opt = opt->value;
 947        append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
 948        return 0;
 949}
 950
 951static int and_callback(const struct option *opt, const char *arg, int unset)
 952{
 953        struct grep_opt *grep_opt = opt->value;
 954        append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
 955        return 0;
 956}
 957
 958static int open_callback(const struct option *opt, const char *arg, int unset)
 959{
 960        struct grep_opt *grep_opt = opt->value;
 961        append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
 962        return 0;
 963}
 964
 965static int close_callback(const struct option *opt, const char *arg, int unset)
 966{
 967        struct grep_opt *grep_opt = opt->value;
 968        append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
 969        return 0;
 970}
 971
 972static int pattern_callback(const struct option *opt, const char *arg,
 973                            int unset)
 974{
 975        struct grep_opt *grep_opt = opt->value;
 976        append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
 977        return 0;
 978}
 979
 980int cmd_grep(int argc, const char **argv, const char *prefix)
 981{
 982        int hit = 0;
 983        int cached = 0, untracked = 0, opt_exclude = -1;
 984        int seen_dashdash = 0;
 985        int external_grep_allowed__ignored;
 986        const char *show_in_pager = NULL, *default_pager = "dummy";
 987        struct grep_opt opt;
 988        struct object_array list = OBJECT_ARRAY_INIT;
 989        struct pathspec pathspec;
 990        struct string_list path_list = STRING_LIST_INIT_NODUP;
 991        int i;
 992        int dummy;
 993        int use_index = 1;
 994        int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
 995        int allow_revs;
 996
 997        struct option options[] = {
 998                OPT_BOOL(0, "cached", &cached,
 999                        N_("search in index instead of in the work tree")),
1000                OPT_NEGBIT(0, "no-index", &use_index,
1001                         N_("find in contents not managed by git"), 1),
1002                OPT_BOOL(0, "untracked", &untracked,
1003                        N_("search in both tracked and untracked files")),
1004                OPT_SET_INT(0, "exclude-standard", &opt_exclude,
1005                            N_("ignore files specified via '.gitignore'"), 1),
1006                OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
1007                         N_("recursively search in each submodule")),
1008                OPT_STRING(0, "parent-basename", &parent_basename,
1009                           N_("basename"),
1010                           N_("prepend parent project's basename to output")),
1011                OPT_GROUP(""),
1012                OPT_BOOL('v', "invert-match", &opt.invert,
1013                        N_("show non-matching lines")),
1014                OPT_BOOL('i', "ignore-case", &opt.ignore_case,
1015                        N_("case insensitive matching")),
1016                OPT_BOOL('w', "word-regexp", &opt.word_regexp,
1017                        N_("match patterns only at word boundaries")),
1018                OPT_SET_INT('a', "text", &opt.binary,
1019                        N_("process binary files as text"), GREP_BINARY_TEXT),
1020                OPT_SET_INT('I', NULL, &opt.binary,
1021                        N_("don't match patterns in binary files"),
1022                        GREP_BINARY_NOMATCH),
1023                OPT_BOOL(0, "textconv", &opt.allow_textconv,
1024                         N_("process binary files with textconv filters")),
1025                { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
1026                        N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
1027                        NULL, 1 },
1028                OPT_GROUP(""),
1029                OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
1030                            N_("use extended POSIX regular expressions"),
1031                            GREP_PATTERN_TYPE_ERE),
1032                OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
1033                            N_("use basic POSIX regular expressions (default)"),
1034                            GREP_PATTERN_TYPE_BRE),
1035                OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
1036                            N_("interpret patterns as fixed strings"),
1037                            GREP_PATTERN_TYPE_FIXED),
1038                OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
1039                            N_("use Perl-compatible regular expressions"),
1040                            GREP_PATTERN_TYPE_PCRE),
1041                OPT_GROUP(""),
1042                OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
1043                OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
1044                OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
1045                OPT_NEGBIT(0, "full-name", &opt.relative,
1046                        N_("show filenames relative to top directory"), 1),
1047                OPT_BOOL('l', "files-with-matches", &opt.name_only,
1048                        N_("show only filenames instead of matching lines")),
1049                OPT_BOOL(0, "name-only", &opt.name_only,
1050                        N_("synonym for --files-with-matches")),
1051                OPT_BOOL('L', "files-without-match",
1052                        &opt.unmatch_name_only,
1053                        N_("show only the names of files without match")),
1054                OPT_BOOL('z', "null", &opt.null_following_name,
1055                        N_("print NUL after filenames")),
1056                OPT_BOOL('c', "count", &opt.count,
1057                        N_("show the number of matches instead of matching lines")),
1058                OPT__COLOR(&opt.color, N_("highlight matches")),
1059                OPT_BOOL(0, "break", &opt.file_break,
1060                        N_("print empty line between matches from different files")),
1061                OPT_BOOL(0, "heading", &opt.heading,
1062                        N_("show filename only once above matches from same file")),
1063                OPT_GROUP(""),
1064                OPT_CALLBACK('C', "context", &opt, N_("n"),
1065                        N_("show <n> context lines before and after matches"),
1066                        context_callback),
1067                OPT_INTEGER('B', "before-context", &opt.pre_context,
1068                        N_("show <n> context lines before matches")),
1069                OPT_INTEGER('A', "after-context", &opt.post_context,
1070                        N_("show <n> context lines after matches")),
1071                OPT_INTEGER(0, "threads", &num_threads,
1072                        N_("use <n> worker threads")),
1073                OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
1074                        context_callback),
1075                OPT_BOOL('p', "show-function", &opt.funcname,
1076                        N_("show a line with the function name before matches")),
1077                OPT_BOOL('W', "function-context", &opt.funcbody,
1078                        N_("show the surrounding function")),
1079                OPT_GROUP(""),
1080                OPT_CALLBACK('f', NULL, &opt, N_("file"),
1081                        N_("read patterns from file"), file_callback),
1082                { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
1083                        N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
1084                { OPTION_CALLBACK, 0, "and", &opt, NULL,
1085                  N_("combine patterns specified with -e"),
1086                  PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
1087                OPT_BOOL(0, "or", &dummy, ""),
1088                { OPTION_CALLBACK, 0, "not", &opt, NULL, "",
1089                  PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
1090                { OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
1091                  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
1092                  open_callback },
1093                { OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
1094                  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
1095                  close_callback },
1096                OPT__QUIET(&opt.status_only,
1097                           N_("indicate hit with exit status without output")),
1098                OPT_BOOL(0, "all-match", &opt.all_match,
1099                        N_("show only matches from files that match all patterns")),
1100                { OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
1101                  N_("show parse tree for grep expression"),
1102                  PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
1103                OPT_GROUP(""),
1104                { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
1105                        N_("pager"), N_("show matching files in the pager"),
1106                        PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
1107                OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
1108                         N_("allow calling of grep(1) (ignored by this build)")),
1109                OPT_END()
1110        };
1111
1112        init_grep_defaults();
1113        git_config(grep_cmd_config, NULL);
1114        grep_init(&opt, prefix);
1115        super_prefix = get_super_prefix();
1116
1117        /*
1118         * If there is no -- then the paths must exist in the working
1119         * tree.  If there is no explicit pattern specified with -e or
1120         * -f, we take the first unrecognized non option to be the
1121         * pattern, but then what follows it must be zero or more
1122         * valid refs up to the -- (if exists), and then existing
1123         * paths.  If there is an explicit pattern, then the first
1124         * unrecognized non option is the beginning of the refs list
1125         * that continues up to the -- (if exists), and then paths.
1126         */
1127        argc = parse_options(argc, argv, prefix, options, grep_usage,
1128                             PARSE_OPT_KEEP_DASHDASH |
1129                             PARSE_OPT_STOP_AT_NON_OPTION);
1130        grep_commit_pattern_type(pattern_type_arg, &opt);
1131
1132        if (use_index && !startup_info->have_repository) {
1133                int fallback = 0;
1134                git_config_get_bool("grep.fallbacktonoindex", &fallback);
1135                if (fallback)
1136                        use_index = 0;
1137                else
1138                        /* die the same way as if we did it at the beginning */
1139                        setup_git_directory();
1140        }
1141
1142        /*
1143         * skip a -- separator; we know it cannot be
1144         * separating revisions from pathnames if
1145         * we haven't even had any patterns yet
1146         */
1147        if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
1148                argv++;
1149                argc--;
1150        }
1151
1152        /* First unrecognized non-option token */
1153        if (argc > 0 && !opt.pattern_list) {
1154                append_grep_pattern(&opt, argv[0], "command line", 0,
1155                                    GREP_PATTERN);
1156                argv++;
1157                argc--;
1158        }
1159
1160        if (show_in_pager == default_pager)
1161                show_in_pager = git_pager(1);
1162        if (show_in_pager) {
1163                opt.color = 0;
1164                opt.name_only = 1;
1165                opt.null_following_name = 1;
1166                opt.output_priv = &path_list;
1167                opt.output = append_path;
1168                string_list_append(&path_list, show_in_pager);
1169        }
1170
1171        if (!opt.pattern_list)
1172                die(_("no pattern given."));
1173
1174        /*
1175         * We have to find "--" in a separate pass, because its presence
1176         * influences how we will parse arguments that come before it.
1177         */
1178        for (i = 0; i < argc; i++) {
1179                if (!strcmp(argv[i], "--")) {
1180                        seen_dashdash = 1;
1181                        break;
1182                }
1183        }
1184
1185        /*
1186         * Resolve any rev arguments. If we have a dashdash, then everything up
1187         * to it must resolve as a rev. If not, then we stop at the first
1188         * non-rev and assume everything else is a path.
1189         */
1190        allow_revs = use_index && !untracked;
1191        for (i = 0; i < argc; i++) {
1192                const char *arg = argv[i];
1193                struct object_id oid;
1194                struct object_context oc;
1195                struct object *object;
1196
1197                if (!strcmp(arg, "--")) {
1198                        i++;
1199                        break;
1200                }
1201
1202                if (!allow_revs) {
1203                        if (seen_dashdash)
1204                                die(_("--no-index or --untracked cannot be used with revs"));
1205                        break;
1206                }
1207
1208                if (get_sha1_with_context(arg, GET_SHA1_RECORD_PATH,
1209                                          oid.hash, &oc)) {
1210                        if (seen_dashdash)
1211                                die(_("unable to resolve revision: %s"), arg);
1212                        break;
1213                }
1214
1215                object = parse_object_or_die(&oid, arg);
1216                if (!seen_dashdash)
1217                        verify_non_filename(prefix, arg);
1218                add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
1219                free(oc.path);
1220        }
1221
1222        /*
1223         * Anything left over is presumed to be a path. But in the non-dashdash
1224         * "do what I mean" case, we verify and complain when that isn't true.
1225         */
1226        if (!seen_dashdash) {
1227                int j;
1228                for (j = i; j < argc; j++)
1229                        verify_filename(prefix, argv[j], j == i && allow_revs);
1230        }
1231
1232        parse_pathspec(&pathspec, 0,
1233                       PATHSPEC_PREFER_CWD |
1234                       (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
1235                       prefix, argv + i);
1236        pathspec.max_depth = opt.max_depth;
1237        pathspec.recursive = 1;
1238
1239#ifndef NO_PTHREADS
1240        if (list.nr || cached || show_in_pager)
1241                num_threads = 0;
1242        else if (num_threads == 0)
1243                num_threads = GREP_NUM_THREADS_DEFAULT;
1244        else if (num_threads < 0)
1245                die(_("invalid number of threads specified (%d)"), num_threads);
1246        if (num_threads == 1)
1247                num_threads = 0;
1248#else
1249        if (num_threads)
1250                warning(_("no threads support, ignoring --threads"));
1251        num_threads = 0;
1252#endif
1253
1254        if (!num_threads)
1255                /*
1256                 * The compiled patterns on the main path are only
1257                 * used when not using threading. Otherwise
1258                 * start_threads() below calls compile_grep_patterns()
1259                 * for each thread.
1260                 */
1261                compile_grep_patterns(&opt);
1262
1263#ifndef NO_PTHREADS
1264        if (num_threads) {
1265                if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1266                    && (opt.pre_context || opt.post_context ||
1267                        opt.file_break || opt.funcbody))
1268                        skip_first_line = 1;
1269                start_threads(&opt);
1270        }
1271#endif
1272
1273        if (recurse_submodules) {
1274                gitmodules_config();
1275                compile_submodule_options(&opt, argv + i, cached, untracked,
1276                                          opt_exclude, use_index,
1277                                          pattern_type_arg);
1278        }
1279
1280        if (show_in_pager && (cached || list.nr))
1281                die(_("--open-files-in-pager only works on the worktree"));
1282
1283        if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
1284                const char *pager = path_list.items[0].string;
1285                int len = strlen(pager);
1286
1287                if (len > 4 && is_dir_sep(pager[len - 5]))
1288                        pager += len - 4;
1289
1290                if (opt.ignore_case && !strcmp("less", pager))
1291                        string_list_append(&path_list, "-I");
1292
1293                if (!strcmp("less", pager) || !strcmp("vi", pager)) {
1294                        struct strbuf buf = STRBUF_INIT;
1295                        strbuf_addf(&buf, "+/%s%s",
1296                                        strcmp("less", pager) ? "" : "*",
1297                                        opt.pattern_list->pattern);
1298                        string_list_append(&path_list, buf.buf);
1299                        strbuf_detach(&buf, NULL);
1300                }
1301        }
1302
1303        if (recurse_submodules && (!use_index || untracked))
1304                die(_("option not supported with --recurse-submodules."));
1305
1306        if (!show_in_pager && !opt.status_only)
1307                setup_pager();
1308
1309        if (!use_index && (untracked || cached))
1310                die(_("--cached or --untracked cannot be used with --no-index."));
1311
1312        if (!use_index || untracked) {
1313                int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
1314                hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
1315        } else if (0 <= opt_exclude) {
1316                die(_("--[no-]exclude-standard cannot be used for tracked contents."));
1317        } else if (!list.nr) {
1318                if (!cached)
1319                        setup_work_tree();
1320
1321                hit = grep_cache(&opt, &pathspec, cached);
1322        } else {
1323                if (cached)
1324                        die(_("both --cached and trees are given."));
1325                hit = grep_objects(&opt, &pathspec, &list);
1326        }
1327
1328        if (num_threads)
1329                hit |= wait_all();
1330        if (hit && show_in_pager)
1331                run_pager(&opt, prefix);
1332        clear_pathspec(&pathspec);
1333        free_grep_patterns(&opt);
1334        return !hit;
1335}