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![Elijah Newren](/assets/img/avatar_default.png)
This allows us to replace includes of cache.h with includes of the much smaller alloc.h in many places. It does mean that we also need to add includes of alloc.h in a number of C files. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1254 lines
34 KiB
C
1254 lines
34 KiB
C
/*
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* Builtin "git grep"
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*
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* Copyright (c) 2006 Junio C Hamano
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*/
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#include "cache.h"
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#include "alloc.h"
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#include "repository.h"
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#include "config.h"
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#include "blob.h"
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#include "tree.h"
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#include "commit.h"
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#include "tag.h"
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#include "tree-walk.h"
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#include "builtin.h"
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#include "parse-options.h"
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#include "string-list.h"
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#include "run-command.h"
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#include "userdiff.h"
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#include "grep.h"
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#include "quote.h"
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#include "dir.h"
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#include "pathspec.h"
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#include "submodule.h"
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#include "submodule-config.h"
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#include "object-store.h"
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#include "packfile.h"
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static const char *grep_prefix;
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static char const * const grep_usage[] = {
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N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
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NULL
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};
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static int recurse_submodules;
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static int num_threads;
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static pthread_t *threads;
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/* We use one producer thread and THREADS consumer
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* threads. The producer adds struct work_items to 'todo' and the
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* consumers pick work items from the same array.
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*/
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struct work_item {
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struct grep_source source;
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char done;
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struct strbuf out;
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};
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/* In the range [todo_done, todo_start) in 'todo' we have work_items
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* that have been or are processed by a consumer thread. We haven't
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* written the result for these to stdout yet.
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*
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* The work_items in [todo_start, todo_end) are waiting to be picked
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* up by a consumer thread.
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*
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* The ranges are modulo TODO_SIZE.
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*/
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#define TODO_SIZE 128
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static struct work_item todo[TODO_SIZE];
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static int todo_start;
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static int todo_end;
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static int todo_done;
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/* Has all work items been added? */
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static int all_work_added;
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static struct repository **repos_to_free;
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static size_t repos_to_free_nr, repos_to_free_alloc;
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/* This lock protects all the variables above. */
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static pthread_mutex_t grep_mutex;
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static inline void grep_lock(void)
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{
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pthread_mutex_lock(&grep_mutex);
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}
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static inline void grep_unlock(void)
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{
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pthread_mutex_unlock(&grep_mutex);
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}
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/* Signalled when a new work_item is added to todo. */
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static pthread_cond_t cond_add;
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/* Signalled when the result from one work_item is written to
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* stdout.
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*/
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static pthread_cond_t cond_write;
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/* Signalled when we are finished with everything. */
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static pthread_cond_t cond_result;
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static int skip_first_line;
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static void add_work(struct grep_opt *opt, struct grep_source *gs)
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{
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if (opt->binary != GREP_BINARY_TEXT)
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grep_source_load_driver(gs, opt->repo->index);
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grep_lock();
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while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
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pthread_cond_wait(&cond_write, &grep_mutex);
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}
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todo[todo_end].source = *gs;
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todo[todo_end].done = 0;
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strbuf_reset(&todo[todo_end].out);
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todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
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pthread_cond_signal(&cond_add);
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grep_unlock();
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}
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static struct work_item *get_work(void)
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{
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struct work_item *ret;
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grep_lock();
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while (todo_start == todo_end && !all_work_added) {
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pthread_cond_wait(&cond_add, &grep_mutex);
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}
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if (todo_start == todo_end && all_work_added) {
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ret = NULL;
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} else {
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ret = &todo[todo_start];
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todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
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}
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grep_unlock();
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return ret;
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}
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static void work_done(struct work_item *w)
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{
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int old_done;
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grep_lock();
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w->done = 1;
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old_done = todo_done;
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for(; todo[todo_done].done && todo_done != todo_start;
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todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
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w = &todo[todo_done];
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if (w->out.len) {
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const char *p = w->out.buf;
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size_t len = w->out.len;
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/* Skip the leading hunk mark of the first file. */
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if (skip_first_line) {
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while (len) {
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len--;
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if (*p++ == '\n')
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break;
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}
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skip_first_line = 0;
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}
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write_or_die(1, p, len);
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}
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grep_source_clear(&w->source);
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}
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if (old_done != todo_done)
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pthread_cond_signal(&cond_write);
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if (all_work_added && todo_done == todo_end)
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pthread_cond_signal(&cond_result);
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grep_unlock();
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}
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static void free_repos(void)
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{
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int i;
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for (i = 0; i < repos_to_free_nr; i++) {
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repo_clear(repos_to_free[i]);
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free(repos_to_free[i]);
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}
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FREE_AND_NULL(repos_to_free);
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repos_to_free_nr = 0;
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repos_to_free_alloc = 0;
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}
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static void *run(void *arg)
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{
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int hit = 0;
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struct grep_opt *opt = arg;
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while (1) {
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struct work_item *w = get_work();
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if (!w)
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break;
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opt->output_priv = w;
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hit |= grep_source(opt, &w->source);
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grep_source_clear_data(&w->source);
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work_done(w);
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}
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free_grep_patterns(opt);
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free(opt);
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return (void*) (intptr_t) hit;
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}
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static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
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{
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struct work_item *w = opt->output_priv;
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strbuf_add(&w->out, buf, size);
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}
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static void start_threads(struct grep_opt *opt)
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{
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int i;
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pthread_mutex_init(&grep_mutex, NULL);
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pthread_mutex_init(&grep_attr_mutex, NULL);
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pthread_cond_init(&cond_add, NULL);
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pthread_cond_init(&cond_write, NULL);
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pthread_cond_init(&cond_result, NULL);
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grep_use_locks = 1;
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enable_obj_read_lock();
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for (i = 0; i < ARRAY_SIZE(todo); i++) {
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strbuf_init(&todo[i].out, 0);
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}
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CALLOC_ARRAY(threads, num_threads);
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for (i = 0; i < num_threads; i++) {
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int err;
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struct grep_opt *o = grep_opt_dup(opt);
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o->output = strbuf_out;
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compile_grep_patterns(o);
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err = pthread_create(&threads[i], NULL, run, o);
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if (err)
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die(_("grep: failed to create thread: %s"),
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strerror(err));
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}
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}
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static int wait_all(void)
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{
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int hit = 0;
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int i;
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if (!HAVE_THREADS)
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BUG("Never call this function unless you have started threads");
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grep_lock();
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all_work_added = 1;
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/* Wait until all work is done. */
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while (todo_done != todo_end)
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pthread_cond_wait(&cond_result, &grep_mutex);
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/* Wake up all the consumer threads so they can see that there
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* is no more work to do.
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*/
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pthread_cond_broadcast(&cond_add);
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grep_unlock();
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for (i = 0; i < num_threads; i++) {
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void *h;
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pthread_join(threads[i], &h);
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hit |= (int) (intptr_t) h;
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}
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free(threads);
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pthread_mutex_destroy(&grep_mutex);
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pthread_mutex_destroy(&grep_attr_mutex);
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pthread_cond_destroy(&cond_add);
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pthread_cond_destroy(&cond_write);
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pthread_cond_destroy(&cond_result);
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grep_use_locks = 0;
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disable_obj_read_lock();
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return hit;
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}
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static int grep_cmd_config(const char *var, const char *value, void *cb)
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{
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int st = grep_config(var, value, cb);
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if (git_color_default_config(var, value, NULL) < 0)
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st = -1;
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if (!strcmp(var, "grep.threads")) {
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num_threads = git_config_int(var, value);
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if (num_threads < 0)
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die(_("invalid number of threads specified (%d) for %s"),
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num_threads, var);
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else if (!HAVE_THREADS && num_threads > 1) {
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/*
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* TRANSLATORS: %s is the configuration
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* variable for tweaking threads, currently
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* grep.threads
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*/
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warning(_("no threads support, ignoring %s"), var);
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num_threads = 1;
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}
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}
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if (!strcmp(var, "submodule.recurse"))
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recurse_submodules = git_config_bool(var, value);
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return st;
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}
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static void grep_source_name(struct grep_opt *opt, const char *filename,
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int tree_name_len, struct strbuf *out)
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{
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strbuf_reset(out);
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if (opt->null_following_name) {
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if (opt->relative && grep_prefix) {
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struct strbuf rel_buf = STRBUF_INIT;
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const char *rel_name =
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relative_path(filename + tree_name_len,
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grep_prefix, &rel_buf);
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if (tree_name_len)
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strbuf_add(out, filename, tree_name_len);
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strbuf_addstr(out, rel_name);
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strbuf_release(&rel_buf);
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} else {
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strbuf_addstr(out, filename);
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}
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return;
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}
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if (opt->relative && grep_prefix)
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quote_path(filename + tree_name_len, grep_prefix, out, 0);
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else
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quote_c_style(filename + tree_name_len, out, NULL, 0);
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if (tree_name_len)
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strbuf_insert(out, 0, filename, tree_name_len);
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}
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static int grep_oid(struct grep_opt *opt, const struct object_id *oid,
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const char *filename, int tree_name_len,
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const char *path)
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{
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struct strbuf pathbuf = STRBUF_INIT;
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struct grep_source gs;
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grep_source_name(opt, filename, tree_name_len, &pathbuf);
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grep_source_init_oid(&gs, pathbuf.buf, path, oid, opt->repo);
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strbuf_release(&pathbuf);
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if (num_threads > 1) {
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/*
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* add_work() copies gs and thus assumes ownership of
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* its fields, so do not call grep_source_clear()
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*/
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add_work(opt, &gs);
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return 0;
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} else {
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int hit;
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hit = grep_source(opt, &gs);
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grep_source_clear(&gs);
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return hit;
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}
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}
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static int grep_file(struct grep_opt *opt, const char *filename)
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{
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struct strbuf buf = STRBUF_INIT;
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struct grep_source gs;
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grep_source_name(opt, filename, 0, &buf);
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grep_source_init_file(&gs, buf.buf, filename);
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strbuf_release(&buf);
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if (num_threads > 1) {
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/*
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* add_work() copies gs and thus assumes ownership of
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* its fields, so do not call grep_source_clear()
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*/
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add_work(opt, &gs);
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return 0;
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} else {
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int hit;
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hit = grep_source(opt, &gs);
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grep_source_clear(&gs);
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return hit;
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}
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}
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static void append_path(struct grep_opt *opt, const void *data, size_t len)
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{
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struct string_list *path_list = opt->output_priv;
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if (len == 1 && *(const char *)data == '\0')
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return;
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string_list_append_nodup(path_list, xstrndup(data, len));
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}
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static void run_pager(struct grep_opt *opt, const char *prefix)
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{
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struct string_list *path_list = opt->output_priv;
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struct child_process child = CHILD_PROCESS_INIT;
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int i, status;
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for (i = 0; i < path_list->nr; i++)
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strvec_push(&child.args, path_list->items[i].string);
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child.dir = prefix;
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child.use_shell = 1;
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status = run_command(&child);
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if (status)
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exit(status);
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}
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static int grep_cache(struct grep_opt *opt,
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const struct pathspec *pathspec, int cached);
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static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
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struct tree_desc *tree, struct strbuf *base, int tn_len,
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int check_attr);
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static int grep_submodule(struct grep_opt *opt,
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const struct pathspec *pathspec,
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const struct object_id *oid,
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const char *filename, const char *path, int cached)
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{
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struct repository *subrepo;
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struct repository *superproject = opt->repo;
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struct grep_opt subopt;
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int hit = 0;
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if (!is_submodule_active(superproject, path))
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return 0;
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subrepo = xmalloc(sizeof(*subrepo));
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if (repo_submodule_init(subrepo, superproject, path, null_oid())) {
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free(subrepo);
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return 0;
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}
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ALLOC_GROW(repos_to_free, repos_to_free_nr + 1, repos_to_free_alloc);
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repos_to_free[repos_to_free_nr++] = subrepo;
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/*
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* NEEDSWORK: repo_read_gitmodules() might call
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* add_to_alternates_memory() via config_from_gitmodules(). This
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* operation causes a race condition with concurrent object readings
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* performed by the worker threads. That's why we need obj_read_lock()
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* here. It should be removed once it's no longer necessary to add the
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* subrepo's odbs to the in-memory alternates list.
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*/
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obj_read_lock();
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/*
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* NEEDSWORK: when reading a submodule, the sparsity settings in the
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* superproject are incorrectly forgotten or misused. For example:
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*
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* 1. "command_requires_full_index"
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* When this setting is turned on for `grep`, only the superproject
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* knows it. All the submodules are read with their own configs
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* and get prepare_repo_settings()'d. Therefore, these submodules
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* "forget" the sparse-index feature switch. As a result, the index
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* of these submodules are expanded unexpectedly.
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*
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* 2. "core_apply_sparse_checkout"
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* When running `grep` in the superproject, this setting is
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* populated using the superproject's configs. However, once
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* initialized, this config is globally accessible and is read by
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* prepare_repo_settings() for the submodules. For instance, if a
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* submodule is using a sparse-checkout, however, the superproject
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* is not, the result is that the config from the superproject will
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* dictate the behavior for the submodule, making it "forget" its
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* sparse-checkout state.
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*
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* 3. "core_sparse_checkout_cone"
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* ditto.
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*
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* Note that this list is not exhaustive.
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*/
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repo_read_gitmodules(subrepo, 0);
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/*
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* All code paths tested by test code no longer need submodule ODBs to
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* be added as alternates, but add it to the list just in case.
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* Submodule ODBs added through add_submodule_odb_by_path() will be
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* lazily registered as alternates when needed (and except in an
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* unexpected code interaction, it won't be needed).
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*/
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add_submodule_odb_by_path(subrepo->objects->odb->path);
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obj_read_unlock();
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memcpy(&subopt, opt, sizeof(subopt));
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subopt.repo = subrepo;
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if (oid) {
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enum object_type object_type;
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struct tree_desc tree;
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void *data;
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unsigned long size;
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struct strbuf base = STRBUF_INIT;
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obj_read_lock();
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object_type = oid_object_info(subrepo, oid, NULL);
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obj_read_unlock();
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data = read_object_with_reference(subrepo,
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oid, OBJ_TREE,
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&size, NULL);
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if (!data)
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die(_("unable to read tree (%s)"), oid_to_hex(oid));
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strbuf_addstr(&base, filename);
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strbuf_addch(&base, '/');
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init_tree_desc(&tree, data, size);
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hit = grep_tree(&subopt, pathspec, &tree, &base, base.len,
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object_type == OBJ_COMMIT);
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strbuf_release(&base);
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free(data);
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} else {
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hit = grep_cache(&subopt, pathspec, cached);
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}
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return hit;
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}
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|
|
static int grep_cache(struct grep_opt *opt,
|
|
const struct pathspec *pathspec, int cached)
|
|
{
|
|
struct repository *repo = opt->repo;
|
|
int hit = 0;
|
|
int nr;
|
|
struct strbuf name = STRBUF_INIT;
|
|
int name_base_len = 0;
|
|
if (repo->submodule_prefix) {
|
|
name_base_len = strlen(repo->submodule_prefix);
|
|
strbuf_addstr(&name, repo->submodule_prefix);
|
|
}
|
|
|
|
if (repo_read_index(repo) < 0)
|
|
die(_("index file corrupt"));
|
|
|
|
for (nr = 0; nr < repo->index->cache_nr; nr++) {
|
|
const struct cache_entry *ce = repo->index->cache[nr];
|
|
|
|
if (!cached && ce_skip_worktree(ce))
|
|
continue;
|
|
|
|
strbuf_setlen(&name, name_base_len);
|
|
strbuf_addstr(&name, ce->name);
|
|
if (S_ISSPARSEDIR(ce->ce_mode)) {
|
|
enum object_type type;
|
|
struct tree_desc tree;
|
|
void *data;
|
|
unsigned long size;
|
|
|
|
data = read_object_file(&ce->oid, &type, &size);
|
|
init_tree_desc(&tree, data, size);
|
|
|
|
hit |= grep_tree(opt, pathspec, &tree, &name, 0, 0);
|
|
strbuf_setlen(&name, name_base_len);
|
|
strbuf_addstr(&name, ce->name);
|
|
free(data);
|
|
} else if (S_ISREG(ce->ce_mode) &&
|
|
match_pathspec(repo->index, pathspec, name.buf, name.len, 0, NULL,
|
|
S_ISDIR(ce->ce_mode) ||
|
|
S_ISGITLINK(ce->ce_mode))) {
|
|
/*
|
|
* If CE_VALID is on, we assume worktree file and its
|
|
* cache entry are identical, even if worktree file has
|
|
* been modified, so use cache version instead
|
|
*/
|
|
if (cached || (ce->ce_flags & CE_VALID)) {
|
|
if (ce_stage(ce) || ce_intent_to_add(ce))
|
|
continue;
|
|
hit |= grep_oid(opt, &ce->oid, name.buf,
|
|
0, name.buf);
|
|
} else {
|
|
hit |= grep_file(opt, name.buf);
|
|
}
|
|
} else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
|
|
submodule_path_match(repo->index, pathspec, name.buf, NULL)) {
|
|
hit |= grep_submodule(opt, pathspec, NULL, ce->name,
|
|
ce->name, cached);
|
|
} else {
|
|
continue;
|
|
}
|
|
|
|
if (ce_stage(ce)) {
|
|
do {
|
|
nr++;
|
|
} while (nr < repo->index->cache_nr &&
|
|
!strcmp(ce->name, repo->index->cache[nr]->name));
|
|
nr--; /* compensate for loop control */
|
|
}
|
|
if (hit && opt->status_only)
|
|
break;
|
|
}
|
|
|
|
strbuf_release(&name);
|
|
return hit;
|
|
}
|
|
|
|
static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
|
|
struct tree_desc *tree, struct strbuf *base, int tn_len,
|
|
int check_attr)
|
|
{
|
|
struct repository *repo = opt->repo;
|
|
int hit = 0;
|
|
enum interesting match = entry_not_interesting;
|
|
struct name_entry entry;
|
|
int old_baselen = base->len;
|
|
struct strbuf name = STRBUF_INIT;
|
|
int name_base_len = 0;
|
|
if (repo->submodule_prefix) {
|
|
strbuf_addstr(&name, repo->submodule_prefix);
|
|
name_base_len = name.len;
|
|
}
|
|
|
|
while (tree_entry(tree, &entry)) {
|
|
int te_len = tree_entry_len(&entry);
|
|
|
|
if (match != all_entries_interesting) {
|
|
strbuf_addstr(&name, base->buf + tn_len);
|
|
match = tree_entry_interesting(repo->index,
|
|
&entry, &name,
|
|
0, pathspec);
|
|
strbuf_setlen(&name, name_base_len);
|
|
|
|
if (match == all_entries_not_interesting)
|
|
break;
|
|
if (match == entry_not_interesting)
|
|
continue;
|
|
}
|
|
|
|
strbuf_add(base, entry.path, te_len);
|
|
|
|
if (S_ISREG(entry.mode)) {
|
|
hit |= grep_oid(opt, &entry.oid, base->buf, tn_len,
|
|
check_attr ? base->buf + tn_len : NULL);
|
|
} else if (S_ISDIR(entry.mode)) {
|
|
enum object_type type;
|
|
struct tree_desc sub;
|
|
void *data;
|
|
unsigned long size;
|
|
|
|
data = read_object_file(&entry.oid, &type, &size);
|
|
if (!data)
|
|
die(_("unable to read tree (%s)"),
|
|
oid_to_hex(&entry.oid));
|
|
|
|
strbuf_addch(base, '/');
|
|
init_tree_desc(&sub, data, size);
|
|
hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
|
|
check_attr);
|
|
free(data);
|
|
} else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
|
|
hit |= grep_submodule(opt, pathspec, &entry.oid,
|
|
base->buf, base->buf + tn_len,
|
|
1); /* ignored */
|
|
}
|
|
|
|
strbuf_setlen(base, old_baselen);
|
|
|
|
if (hit && opt->status_only)
|
|
break;
|
|
}
|
|
|
|
strbuf_release(&name);
|
|
return hit;
|
|
}
|
|
|
|
static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
|
|
struct object *obj, const char *name, const char *path)
|
|
{
|
|
if (obj->type == OBJ_BLOB)
|
|
return grep_oid(opt, &obj->oid, name, 0, path);
|
|
if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
|
|
struct tree_desc tree;
|
|
void *data;
|
|
unsigned long size;
|
|
struct strbuf base;
|
|
int hit, len;
|
|
|
|
data = read_object_with_reference(opt->repo,
|
|
&obj->oid, OBJ_TREE,
|
|
&size, NULL);
|
|
if (!data)
|
|
die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
|
|
|
|
len = name ? strlen(name) : 0;
|
|
strbuf_init(&base, PATH_MAX + len + 1);
|
|
if (len) {
|
|
strbuf_add(&base, name, len);
|
|
strbuf_addch(&base, ':');
|
|
}
|
|
init_tree_desc(&tree, data, size);
|
|
hit = grep_tree(opt, pathspec, &tree, &base, base.len,
|
|
obj->type == OBJ_COMMIT);
|
|
strbuf_release(&base);
|
|
free(data);
|
|
return hit;
|
|
}
|
|
die(_("unable to grep from object of type %s"), type_name(obj->type));
|
|
}
|
|
|
|
static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
|
|
const struct object_array *list)
|
|
{
|
|
unsigned int i;
|
|
int hit = 0;
|
|
const unsigned int nr = list->nr;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
struct object *real_obj;
|
|
|
|
obj_read_lock();
|
|
real_obj = deref_tag(opt->repo, list->objects[i].item,
|
|
NULL, 0);
|
|
obj_read_unlock();
|
|
|
|
if (!real_obj) {
|
|
char hex[GIT_MAX_HEXSZ + 1];
|
|
const char *name = list->objects[i].name;
|
|
|
|
if (!name) {
|
|
oid_to_hex_r(hex, &list->objects[i].item->oid);
|
|
name = hex;
|
|
}
|
|
die(_("invalid object '%s' given."), name);
|
|
}
|
|
|
|
/* load the gitmodules file for this rev */
|
|
if (recurse_submodules) {
|
|
submodule_free(opt->repo);
|
|
obj_read_lock();
|
|
gitmodules_config_oid(&real_obj->oid);
|
|
obj_read_unlock();
|
|
}
|
|
if (grep_object(opt, pathspec, real_obj, list->objects[i].name,
|
|
list->objects[i].path)) {
|
|
hit = 1;
|
|
if (opt->status_only)
|
|
break;
|
|
}
|
|
}
|
|
return hit;
|
|
}
|
|
|
|
static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
|
|
int exc_std, int use_index)
|
|
{
|
|
struct dir_struct dir = DIR_INIT;
|
|
int i, hit = 0;
|
|
|
|
if (!use_index)
|
|
dir.flags |= DIR_NO_GITLINKS;
|
|
if (exc_std)
|
|
setup_standard_excludes(&dir);
|
|
|
|
fill_directory(&dir, opt->repo->index, pathspec);
|
|
for (i = 0; i < dir.nr; i++) {
|
|
hit |= grep_file(opt, dir.entries[i]->name);
|
|
if (hit && opt->status_only)
|
|
break;
|
|
}
|
|
dir_clear(&dir);
|
|
return hit;
|
|
}
|
|
|
|
static int context_callback(const struct option *opt, const char *arg,
|
|
int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
int value;
|
|
const char *endp;
|
|
|
|
if (unset) {
|
|
grep_opt->pre_context = grep_opt->post_context = 0;
|
|
return 0;
|
|
}
|
|
value = strtol(arg, (char **)&endp, 10);
|
|
if (*endp) {
|
|
return error(_("switch `%c' expects a numerical value"),
|
|
opt->short_name);
|
|
}
|
|
grep_opt->pre_context = grep_opt->post_context = value;
|
|
return 0;
|
|
}
|
|
|
|
static int file_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
int from_stdin;
|
|
FILE *patterns;
|
|
int lno = 0;
|
|
struct strbuf sb = STRBUF_INIT;
|
|
|
|
BUG_ON_OPT_NEG(unset);
|
|
|
|
from_stdin = !strcmp(arg, "-");
|
|
patterns = from_stdin ? stdin : fopen(arg, "r");
|
|
if (!patterns)
|
|
die_errno(_("cannot open '%s'"), arg);
|
|
while (strbuf_getline(&sb, patterns) == 0) {
|
|
/* ignore empty line like grep does */
|
|
if (sb.len == 0)
|
|
continue;
|
|
|
|
append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
|
|
GREP_PATTERN);
|
|
}
|
|
if (!from_stdin)
|
|
fclose(patterns);
|
|
strbuf_release(&sb);
|
|
return 0;
|
|
}
|
|
|
|
static int not_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
BUG_ON_OPT_NEG(unset);
|
|
BUG_ON_OPT_ARG(arg);
|
|
append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
|
|
return 0;
|
|
}
|
|
|
|
static int and_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
BUG_ON_OPT_NEG(unset);
|
|
BUG_ON_OPT_ARG(arg);
|
|
append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
|
|
return 0;
|
|
}
|
|
|
|
static int open_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
BUG_ON_OPT_NEG(unset);
|
|
BUG_ON_OPT_ARG(arg);
|
|
append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
|
|
return 0;
|
|
}
|
|
|
|
static int close_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
BUG_ON_OPT_NEG(unset);
|
|
BUG_ON_OPT_ARG(arg);
|
|
append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
|
|
return 0;
|
|
}
|
|
|
|
static int pattern_callback(const struct option *opt, const char *arg,
|
|
int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
BUG_ON_OPT_NEG(unset);
|
|
append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
|
|
return 0;
|
|
}
|
|
|
|
int cmd_grep(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int hit = 0;
|
|
int cached = 0, untracked = 0, opt_exclude = -1;
|
|
int seen_dashdash = 0;
|
|
int external_grep_allowed__ignored;
|
|
const char *show_in_pager = NULL, *default_pager = "dummy";
|
|
struct grep_opt opt;
|
|
struct object_array list = OBJECT_ARRAY_INIT;
|
|
struct pathspec pathspec;
|
|
struct string_list path_list = STRING_LIST_INIT_DUP;
|
|
int i;
|
|
int dummy;
|
|
int use_index = 1;
|
|
int allow_revs;
|
|
|
|
struct option options[] = {
|
|
OPT_BOOL(0, "cached", &cached,
|
|
N_("search in index instead of in the work tree")),
|
|
OPT_NEGBIT(0, "no-index", &use_index,
|
|
N_("find in contents not managed by git"), 1),
|
|
OPT_BOOL(0, "untracked", &untracked,
|
|
N_("search in both tracked and untracked files")),
|
|
OPT_SET_INT(0, "exclude-standard", &opt_exclude,
|
|
N_("ignore files specified via '.gitignore'"), 1),
|
|
OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
|
|
N_("recursively search in each submodule")),
|
|
OPT_GROUP(""),
|
|
OPT_BOOL('v', "invert-match", &opt.invert,
|
|
N_("show non-matching lines")),
|
|
OPT_BOOL('i', "ignore-case", &opt.ignore_case,
|
|
N_("case insensitive matching")),
|
|
OPT_BOOL('w', "word-regexp", &opt.word_regexp,
|
|
N_("match patterns only at word boundaries")),
|
|
OPT_SET_INT('a', "text", &opt.binary,
|
|
N_("process binary files as text"), GREP_BINARY_TEXT),
|
|
OPT_SET_INT('I', NULL, &opt.binary,
|
|
N_("don't match patterns in binary files"),
|
|
GREP_BINARY_NOMATCH),
|
|
OPT_BOOL(0, "textconv", &opt.allow_textconv,
|
|
N_("process binary files with textconv filters")),
|
|
OPT_SET_INT('r', "recursive", &opt.max_depth,
|
|
N_("search in subdirectories (default)"), -1),
|
|
{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
|
|
N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
|
|
NULL, 1 },
|
|
OPT_GROUP(""),
|
|
OPT_SET_INT('E', "extended-regexp", &opt.pattern_type_option,
|
|
N_("use extended POSIX regular expressions"),
|
|
GREP_PATTERN_TYPE_ERE),
|
|
OPT_SET_INT('G', "basic-regexp", &opt.pattern_type_option,
|
|
N_("use basic POSIX regular expressions (default)"),
|
|
GREP_PATTERN_TYPE_BRE),
|
|
OPT_SET_INT('F', "fixed-strings", &opt.pattern_type_option,
|
|
N_("interpret patterns as fixed strings"),
|
|
GREP_PATTERN_TYPE_FIXED),
|
|
OPT_SET_INT('P', "perl-regexp", &opt.pattern_type_option,
|
|
N_("use Perl-compatible regular expressions"),
|
|
GREP_PATTERN_TYPE_PCRE),
|
|
OPT_GROUP(""),
|
|
OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
|
|
OPT_BOOL(0, "column", &opt.columnnum, N_("show column number of first match")),
|
|
OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
|
|
OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
|
|
OPT_NEGBIT(0, "full-name", &opt.relative,
|
|
N_("show filenames relative to top directory"), 1),
|
|
OPT_BOOL('l', "files-with-matches", &opt.name_only,
|
|
N_("show only filenames instead of matching lines")),
|
|
OPT_BOOL(0, "name-only", &opt.name_only,
|
|
N_("synonym for --files-with-matches")),
|
|
OPT_BOOL('L', "files-without-match",
|
|
&opt.unmatch_name_only,
|
|
N_("show only the names of files without match")),
|
|
OPT_BOOL_F('z', "null", &opt.null_following_name,
|
|
N_("print NUL after filenames"),
|
|
PARSE_OPT_NOCOMPLETE),
|
|
OPT_BOOL('o', "only-matching", &opt.only_matching,
|
|
N_("show only matching parts of a line")),
|
|
OPT_BOOL('c', "count", &opt.count,
|
|
N_("show the number of matches instead of matching lines")),
|
|
OPT__COLOR(&opt.color, N_("highlight matches")),
|
|
OPT_BOOL(0, "break", &opt.file_break,
|
|
N_("print empty line between matches from different files")),
|
|
OPT_BOOL(0, "heading", &opt.heading,
|
|
N_("show filename only once above matches from same file")),
|
|
OPT_GROUP(""),
|
|
OPT_CALLBACK('C', "context", &opt, N_("n"),
|
|
N_("show <n> context lines before and after matches"),
|
|
context_callback),
|
|
OPT_INTEGER('B', "before-context", &opt.pre_context,
|
|
N_("show <n> context lines before matches")),
|
|
OPT_INTEGER('A', "after-context", &opt.post_context,
|
|
N_("show <n> context lines after matches")),
|
|
OPT_INTEGER(0, "threads", &num_threads,
|
|
N_("use <n> worker threads")),
|
|
OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
|
|
context_callback),
|
|
OPT_BOOL('p', "show-function", &opt.funcname,
|
|
N_("show a line with the function name before matches")),
|
|
OPT_BOOL('W', "function-context", &opt.funcbody,
|
|
N_("show the surrounding function")),
|
|
OPT_GROUP(""),
|
|
OPT_CALLBACK('f', NULL, &opt, N_("file"),
|
|
N_("read patterns from file"), file_callback),
|
|
OPT_CALLBACK_F('e', NULL, &opt, N_("pattern"),
|
|
N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback),
|
|
OPT_CALLBACK_F(0, "and", &opt, NULL,
|
|
N_("combine patterns specified with -e"),
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback),
|
|
OPT_BOOL(0, "or", &dummy, ""),
|
|
OPT_CALLBACK_F(0, "not", &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback),
|
|
OPT_CALLBACK_F('(', NULL, &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
|
|
open_callback),
|
|
OPT_CALLBACK_F(')', NULL, &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
|
|
close_callback),
|
|
OPT__QUIET(&opt.status_only,
|
|
N_("indicate hit with exit status without output")),
|
|
OPT_BOOL(0, "all-match", &opt.all_match,
|
|
N_("show only matches from files that match all patterns")),
|
|
OPT_GROUP(""),
|
|
{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
|
|
N_("pager"), N_("show matching files in the pager"),
|
|
PARSE_OPT_OPTARG | PARSE_OPT_NOCOMPLETE,
|
|
NULL, (intptr_t)default_pager },
|
|
OPT_BOOL_F(0, "ext-grep", &external_grep_allowed__ignored,
|
|
N_("allow calling of grep(1) (ignored by this build)"),
|
|
PARSE_OPT_NOCOMPLETE),
|
|
OPT_INTEGER('m', "max-count", &opt.max_count,
|
|
N_("maximum number of results per file")),
|
|
OPT_END()
|
|
};
|
|
grep_prefix = prefix;
|
|
|
|
grep_init(&opt, the_repository);
|
|
git_config(grep_cmd_config, &opt);
|
|
|
|
/*
|
|
* If there is no -- then the paths must exist in the working
|
|
* tree. If there is no explicit pattern specified with -e or
|
|
* -f, we take the first unrecognized non option to be the
|
|
* pattern, but then what follows it must be zero or more
|
|
* valid refs up to the -- (if exists), and then existing
|
|
* paths. If there is an explicit pattern, then the first
|
|
* unrecognized non option is the beginning of the refs list
|
|
* that continues up to the -- (if exists), and then paths.
|
|
*/
|
|
argc = parse_options(argc, argv, prefix, options, grep_usage,
|
|
PARSE_OPT_KEEP_DASHDASH |
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
if (the_repository->gitdir) {
|
|
prepare_repo_settings(the_repository);
|
|
the_repository->settings.command_requires_full_index = 0;
|
|
}
|
|
|
|
if (use_index && !startup_info->have_repository) {
|
|
int fallback = 0;
|
|
git_config_get_bool("grep.fallbacktonoindex", &fallback);
|
|
if (fallback)
|
|
use_index = 0;
|
|
else
|
|
/* die the same way as if we did it at the beginning */
|
|
setup_git_directory();
|
|
}
|
|
/* Ignore --recurse-submodules if --no-index is given or implied */
|
|
if (!use_index)
|
|
recurse_submodules = 0;
|
|
|
|
/*
|
|
* skip a -- separator; we know it cannot be
|
|
* separating revisions from pathnames if
|
|
* we haven't even had any patterns yet
|
|
*/
|
|
if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
|
|
argv++;
|
|
argc--;
|
|
}
|
|
|
|
/* First unrecognized non-option token */
|
|
if (argc > 0 && !opt.pattern_list) {
|
|
append_grep_pattern(&opt, argv[0], "command line", 0,
|
|
GREP_PATTERN);
|
|
argv++;
|
|
argc--;
|
|
}
|
|
|
|
if (show_in_pager == default_pager)
|
|
show_in_pager = git_pager(1);
|
|
if (show_in_pager) {
|
|
opt.color = 0;
|
|
opt.name_only = 1;
|
|
opt.null_following_name = 1;
|
|
opt.output_priv = &path_list;
|
|
opt.output = append_path;
|
|
string_list_append(&path_list, show_in_pager);
|
|
}
|
|
|
|
if (!opt.pattern_list)
|
|
die(_("no pattern given"));
|
|
|
|
/* --only-matching has no effect with --invert. */
|
|
if (opt.invert)
|
|
opt.only_matching = 0;
|
|
|
|
/*
|
|
* We have to find "--" in a separate pass, because its presence
|
|
* influences how we will parse arguments that come before it.
|
|
*/
|
|
for (i = 0; i < argc; i++) {
|
|
if (!strcmp(argv[i], "--")) {
|
|
seen_dashdash = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Resolve any rev arguments. If we have a dashdash, then everything up
|
|
* to it must resolve as a rev. If not, then we stop at the first
|
|
* non-rev and assume everything else is a path.
|
|
*/
|
|
allow_revs = use_index && !untracked;
|
|
for (i = 0; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
struct object_id oid;
|
|
struct object_context oc;
|
|
struct object *object;
|
|
|
|
if (!strcmp(arg, "--")) {
|
|
i++;
|
|
break;
|
|
}
|
|
|
|
if (!allow_revs) {
|
|
if (seen_dashdash)
|
|
die(_("--no-index or --untracked cannot be used with revs"));
|
|
break;
|
|
}
|
|
|
|
if (get_oid_with_context(the_repository, arg,
|
|
GET_OID_RECORD_PATH,
|
|
&oid, &oc)) {
|
|
if (seen_dashdash)
|
|
die(_("unable to resolve revision: %s"), arg);
|
|
break;
|
|
}
|
|
|
|
object = parse_object_or_die(&oid, arg);
|
|
if (!seen_dashdash)
|
|
verify_non_filename(prefix, arg);
|
|
add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
|
|
free(oc.path);
|
|
}
|
|
|
|
/*
|
|
* Anything left over is presumed to be a path. But in the non-dashdash
|
|
* "do what I mean" case, we verify and complain when that isn't true.
|
|
*/
|
|
if (!seen_dashdash) {
|
|
int j;
|
|
for (j = i; j < argc; j++)
|
|
verify_filename(prefix, argv[j], j == i && allow_revs);
|
|
}
|
|
|
|
parse_pathspec(&pathspec, 0,
|
|
PATHSPEC_PREFER_CWD |
|
|
(opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
|
|
prefix, argv + i);
|
|
pathspec.max_depth = opt.max_depth;
|
|
pathspec.recursive = 1;
|
|
pathspec.recurse_submodules = !!recurse_submodules;
|
|
|
|
if (recurse_submodules && untracked)
|
|
die(_("--untracked not supported with --recurse-submodules"));
|
|
|
|
/*
|
|
* Optimize out the case where the amount of matches is limited to zero.
|
|
* We do this to keep results consistent with GNU grep(1).
|
|
*/
|
|
if (opt.max_count == 0)
|
|
return 1;
|
|
|
|
if (show_in_pager) {
|
|
if (num_threads > 1)
|
|
warning(_("invalid option combination, ignoring --threads"));
|
|
num_threads = 1;
|
|
} else if (!HAVE_THREADS && num_threads > 1) {
|
|
warning(_("no threads support, ignoring --threads"));
|
|
num_threads = 1;
|
|
} else if (num_threads < 0)
|
|
die(_("invalid number of threads specified (%d)"), num_threads);
|
|
else if (num_threads == 0)
|
|
num_threads = HAVE_THREADS ? online_cpus() : 1;
|
|
|
|
if (num_threads > 1) {
|
|
if (!HAVE_THREADS)
|
|
BUG("Somebody got num_threads calculation wrong!");
|
|
if (!(opt.name_only || opt.unmatch_name_only || opt.count)
|
|
&& (opt.pre_context || opt.post_context ||
|
|
opt.file_break || opt.funcbody))
|
|
skip_first_line = 1;
|
|
|
|
/*
|
|
* Pre-read gitmodules (if not read already) and force eager
|
|
* initialization of packed_git to prevent racy lazy
|
|
* reading/initialization once worker threads are started.
|
|
*/
|
|
if (recurse_submodules)
|
|
repo_read_gitmodules(the_repository, 1);
|
|
if (startup_info->have_repository)
|
|
(void)get_packed_git(the_repository);
|
|
|
|
start_threads(&opt);
|
|
} else {
|
|
/*
|
|
* The compiled patterns on the main path are only
|
|
* used when not using threading. Otherwise
|
|
* start_threads() above calls compile_grep_patterns()
|
|
* for each thread.
|
|
*/
|
|
compile_grep_patterns(&opt);
|
|
}
|
|
|
|
if (show_in_pager && (cached || list.nr))
|
|
die(_("--open-files-in-pager only works on the worktree"));
|
|
|
|
if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
|
|
const char *pager = path_list.items[0].string;
|
|
int len = strlen(pager);
|
|
|
|
if (len > 4 && is_dir_sep(pager[len - 5]))
|
|
pager += len - 4;
|
|
|
|
if (opt.ignore_case && !strcmp("less", pager))
|
|
string_list_append(&path_list, "-I");
|
|
|
|
if (!strcmp("less", pager) || !strcmp("vi", pager)) {
|
|
struct strbuf buf = STRBUF_INIT;
|
|
strbuf_addf(&buf, "+/%s%s",
|
|
strcmp("less", pager) ? "" : "*",
|
|
opt.pattern_list->pattern);
|
|
string_list_append_nodup(&path_list,
|
|
strbuf_detach(&buf, NULL));
|
|
}
|
|
}
|
|
|
|
if (!show_in_pager && !opt.status_only)
|
|
setup_pager();
|
|
|
|
die_for_incompatible_opt3(!use_index, "--no-index",
|
|
untracked, "--untracked",
|
|
cached, "--cached");
|
|
|
|
if (!use_index || untracked) {
|
|
int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
|
|
hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
|
|
} else if (0 <= opt_exclude) {
|
|
die(_("--[no-]exclude-standard cannot be used for tracked contents"));
|
|
} else if (!list.nr) {
|
|
if (!cached)
|
|
setup_work_tree();
|
|
|
|
hit = grep_cache(&opt, &pathspec, cached);
|
|
} else {
|
|
if (cached)
|
|
die(_("both --cached and trees are given"));
|
|
|
|
hit = grep_objects(&opt, &pathspec, &list);
|
|
}
|
|
|
|
if (num_threads > 1)
|
|
hit |= wait_all();
|
|
if (hit && show_in_pager)
|
|
run_pager(&opt, prefix);
|
|
clear_pathspec(&pathspec);
|
|
string_list_clear(&path_list, 0);
|
|
free_grep_patterns(&opt);
|
|
object_array_clear(&list);
|
|
free_repos();
|
|
return !hit;
|
|
}
|