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![Victor Leschuk](/assets/img/avatar_default.png)
When show-in-pager option is used, threading is unconditionally disabled, but this happened much earlier than the code that determines the use of threading based on the operand (i.e. we do not thread search in the object database). Consolidate the code to disable threading to just one place. Signed-off-by: Victor Leschuk <vleschuk@accesssoftek.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
918 lines
24 KiB
C
918 lines
24 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 "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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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 use_threads = 1;
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#ifndef NO_PTHREADS
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#define THREADS 8
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static pthread_t threads[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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/* 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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if (use_threads)
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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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if (use_threads)
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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, enum grep_source_type type,
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const char *name, const char *path, const void *id)
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{
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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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grep_source_init(&todo[todo_end].source, type, name, path, id);
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if (opt->binary != GREP_BINARY_TEXT)
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grep_source_load_driver(&todo[todo_end].source);
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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 *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(arg);
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free(arg);
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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_read_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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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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for (i = 0; i < ARRAY_SIZE(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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o->debug = 0;
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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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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 < ARRAY_SIZE(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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pthread_mutex_destroy(&grep_mutex);
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pthread_mutex_destroy(&grep_read_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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return hit;
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}
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#else /* !NO_PTHREADS */
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static int wait_all(void)
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{
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return 0;
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}
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#endif
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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, cb) < 0)
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st = -1;
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return st;
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}
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static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
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{
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void *data;
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grep_read_lock();
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data = read_sha1_file(sha1, type, size);
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grep_read_unlock();
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return data;
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}
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static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
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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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if (opt->relative && opt->prefix_length) {
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quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf);
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strbuf_insert(&pathbuf, 0, filename, tree_name_len);
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} else {
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strbuf_addstr(&pathbuf, filename);
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}
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#ifndef NO_PTHREADS
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if (use_threads) {
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add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1);
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strbuf_release(&pathbuf);
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return 0;
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} else
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#endif
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{
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struct grep_source gs;
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int hit;
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grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1);
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strbuf_release(&pathbuf);
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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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if (opt->relative && opt->prefix_length)
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quote_path_relative(filename, opt->prefix, &buf);
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else
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strbuf_addstr(&buf, filename);
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#ifndef NO_PTHREADS
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if (use_threads) {
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add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename);
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strbuf_release(&buf);
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return 0;
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} else
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#endif
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{
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struct grep_source gs;
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int hit;
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grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
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strbuf_release(&buf);
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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(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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const char **argv = xmalloc(sizeof(const char *) * (path_list->nr + 1));
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int i, status;
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for (i = 0; i < path_list->nr; i++)
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argv[i] = path_list->items[i].string;
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argv[path_list->nr] = NULL;
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status = run_command_v_opt_cd_env(argv, RUN_USING_SHELL, prefix, NULL);
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if (status)
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exit(status);
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free(argv);
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}
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static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached)
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{
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int hit = 0;
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int nr;
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read_cache();
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for (nr = 0; nr < active_nr; nr++) {
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const struct cache_entry *ce = active_cache[nr];
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if (!S_ISREG(ce->ce_mode))
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continue;
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if (!ce_path_match(ce, pathspec, NULL))
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continue;
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/*
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* If CE_VALID is on, we assume worktree file and its cache entry
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* are identical, even if worktree file has been modified, so use
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* cache version instead
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*/
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if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) {
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if (ce_stage(ce))
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continue;
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hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name);
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}
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else
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hit |= grep_file(opt, ce->name);
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if (ce_stage(ce)) {
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do {
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nr++;
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} while (nr < active_nr &&
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!strcmp(ce->name, active_cache[nr]->name));
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nr--; /* compensate for loop control */
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}
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if (hit && opt->status_only)
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break;
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}
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return hit;
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}
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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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{
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int hit = 0;
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enum interesting match = entry_not_interesting;
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struct name_entry entry;
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int old_baselen = base->len;
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while (tree_entry(tree, &entry)) {
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int te_len = tree_entry_len(&entry);
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if (match != all_entries_interesting) {
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match = tree_entry_interesting(&entry, base, tn_len, pathspec);
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if (match == all_entries_not_interesting)
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break;
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if (match == entry_not_interesting)
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continue;
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}
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strbuf_add(base, entry.path, te_len);
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if (S_ISREG(entry.mode)) {
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hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len,
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check_attr ? base->buf + tn_len : NULL);
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}
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else if (S_ISDIR(entry.mode)) {
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enum object_type type;
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struct tree_desc sub;
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void *data;
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unsigned long size;
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data = lock_and_read_sha1_file(entry.sha1, &type, &size);
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if (!data)
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die(_("unable to read tree (%s)"),
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sha1_to_hex(entry.sha1));
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strbuf_addch(base, '/');
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init_tree_desc(&sub, data, size);
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hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
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check_attr);
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free(data);
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}
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strbuf_setlen(base, old_baselen);
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if (hit && opt->status_only)
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break;
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}
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return hit;
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}
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static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
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struct object *obj, const char *name, const char *path)
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{
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if (obj->type == OBJ_BLOB)
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return grep_sha1(opt, obj->sha1, name, 0, path);
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if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
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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;
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int hit, len;
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grep_read_lock();
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data = read_object_with_reference(obj->sha1, tree_type,
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&size, NULL);
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grep_read_unlock();
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if (!data)
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die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1));
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len = name ? strlen(name) : 0;
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strbuf_init(&base, PATH_MAX + len + 1);
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if (len) {
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strbuf_add(&base, name, len);
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strbuf_addch(&base, ':');
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}
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init_tree_desc(&tree, data, size);
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hit = grep_tree(opt, pathspec, &tree, &base, base.len,
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obj->type == OBJ_COMMIT);
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strbuf_release(&base);
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free(data);
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return hit;
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}
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die(_("unable to grep from object of type %s"), typename(obj->type));
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}
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static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
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const struct object_array *list)
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{
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unsigned int i;
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int hit = 0;
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const unsigned int nr = list->nr;
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for (i = 0; i < nr; i++) {
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struct object *real_obj;
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real_obj = deref_tag(list->objects[i].item, NULL, 0);
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if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) {
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hit = 1;
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if (opt->status_only)
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break;
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}
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}
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return hit;
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}
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static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
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int exc_std)
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{
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struct dir_struct dir;
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int i, hit = 0;
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memset(&dir, 0, sizeof(dir));
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if (exc_std)
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setup_standard_excludes(&dir);
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fill_directory(&dir, pathspec);
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for (i = 0; i < dir.nr; i++) {
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if (!dir_path_match(dir.entries[i], pathspec, 0, NULL))
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continue;
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hit |= grep_file(opt, dir.entries[i]->name);
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if (hit && opt->status_only)
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break;
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}
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return hit;
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}
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|
|
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 = !strcmp(arg, "-");
|
|
FILE *patterns;
|
|
int lno = 0;
|
|
struct strbuf sb = STRBUF_INIT;
|
|
|
|
patterns = from_stdin ? stdin : fopen(arg, "r");
|
|
if (!patterns)
|
|
die_errno(_("cannot open '%s'"), arg);
|
|
while (strbuf_getline(&sb, patterns, '\n') == 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;
|
|
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;
|
|
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;
|
|
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;
|
|
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;
|
|
append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
|
|
return 0;
|
|
}
|
|
|
|
static int help_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
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_NODUP;
|
|
int i;
|
|
int dummy;
|
|
int use_index = 1;
|
|
int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
|
|
|
|
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_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")),
|
|
{ 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", &pattern_type_arg,
|
|
N_("use extended POSIX regular expressions"),
|
|
GREP_PATTERN_TYPE_ERE),
|
|
OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
|
|
N_("use basic POSIX regular expressions (default)"),
|
|
GREP_PATTERN_TYPE_BRE),
|
|
OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
|
|
N_("interpret patterns as fixed strings"),
|
|
GREP_PATTERN_TYPE_FIXED),
|
|
OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
|
|
N_("use Perl-compatible regular expressions"),
|
|
GREP_PATTERN_TYPE_PCRE),
|
|
OPT_GROUP(""),
|
|
OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
|
|
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('z', "null", &opt.null_following_name,
|
|
N_("print NUL after filenames")),
|
|
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_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),
|
|
{ OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
|
|
N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
|
|
{ OPTION_CALLBACK, 0, "and", &opt, NULL,
|
|
N_("combine patterns specified with -e"),
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
|
|
OPT_BOOL(0, "or", &dummy, ""),
|
|
{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
|
|
{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
|
|
open_callback },
|
|
{ OPTION_CALLBACK, ')', 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")),
|
|
{ OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
|
|
N_("show parse tree for grep expression"),
|
|
PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
|
|
OPT_GROUP(""),
|
|
{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
|
|
N_("pager"), N_("show matching files in the pager"),
|
|
PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
|
|
OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
|
|
N_("allow calling of grep(1) (ignored by this build)")),
|
|
{ OPTION_CALLBACK, 0, "help-all", NULL, NULL, N_("show usage"),
|
|
PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
|
|
OPT_END()
|
|
};
|
|
|
|
/*
|
|
* 'git grep -h', unlike 'git grep -h <pattern>', is a request
|
|
* to show usage information and exit.
|
|
*/
|
|
if (argc == 2 && !strcmp(argv[1], "-h"))
|
|
usage_with_options(grep_usage, options);
|
|
|
|
init_grep_defaults();
|
|
git_config(grep_cmd_config, NULL);
|
|
grep_init(&opt, prefix);
|
|
|
|
/*
|
|
* 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 |
|
|
PARSE_OPT_NO_INTERNAL_HELP);
|
|
grep_commit_pattern_type(pattern_type_arg, &opt);
|
|
|
|
if (use_index && !startup_info->have_repository)
|
|
/* die the same way as if we did it at the beginning */
|
|
setup_git_directory();
|
|
|
|
/*
|
|
* 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."));
|
|
if (!opt.fixed && opt.ignore_case)
|
|
opt.regflags |= REG_ICASE;
|
|
|
|
compile_grep_patterns(&opt);
|
|
|
|
/* Check revs and then paths */
|
|
for (i = 0; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
unsigned char sha1[20];
|
|
struct object_context oc;
|
|
/* Is it a rev? */
|
|
if (!get_sha1_with_context(arg, 0, sha1, &oc)) {
|
|
struct object *object = parse_object_or_die(sha1, arg);
|
|
if (!seen_dashdash)
|
|
verify_non_filename(prefix, arg);
|
|
add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--")) {
|
|
i++;
|
|
seen_dashdash = 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
#ifndef NO_PTHREADS
|
|
if (list.nr || cached || show_in_pager)
|
|
use_threads = 0;
|
|
#else
|
|
use_threads = 0;
|
|
#endif
|
|
|
|
#ifndef NO_PTHREADS
|
|
if (use_threads) {
|
|
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;
|
|
start_threads(&opt);
|
|
}
|
|
#endif
|
|
|
|
/* The rest are paths */
|
|
if (!seen_dashdash) {
|
|
int j;
|
|
for (j = i; j < argc; j++)
|
|
verify_filename(prefix, argv[j], j == i);
|
|
}
|
|
|
|
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;
|
|
|
|
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(&path_list, buf.buf);
|
|
strbuf_detach(&buf, NULL);
|
|
}
|
|
}
|
|
|
|
if (!show_in_pager && !opt.status_only)
|
|
setup_pager();
|
|
|
|
if (!use_index && (untracked || cached))
|
|
die(_("--cached or --untracked cannot be used with --no-index."));
|
|
|
|
if (!use_index || untracked) {
|
|
int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
|
|
if (list.nr)
|
|
die(_("--no-index or --untracked cannot be used with revs."));
|
|
hit = grep_directory(&opt, &pathspec, use_exclude);
|
|
} 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 (use_threads)
|
|
hit |= wait_all();
|
|
if (hit && show_in_pager)
|
|
run_pager(&opt, prefix);
|
|
free_grep_patterns(&opt);
|
|
return !hit;
|
|
}
|