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![Junio C Hamano](/assets/img/avatar_default.png)
* np/malloc-threading: Thread-safe xmalloc and xrealloc needs a recursive mutex Make xmalloc and xrealloc thread-safe
1043 lines
26 KiB
C
1043 lines
26 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 "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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#ifndef NO_PTHREADS
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#include <pthread.h>
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#include "thread-utils.h"
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#endif
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static char const * const grep_usage[] = {
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"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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static void *load_sha1(const unsigned char *sha1, unsigned long *size,
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const char *name);
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static void *load_file(const char *filename, size_t *sz);
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enum work_type {WORK_SHA1, WORK_FILE};
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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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{
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enum work_type type;
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char *name;
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/* if type == WORK_SHA1, then 'identifier' is a SHA1,
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* otherwise type == WORK_FILE, and 'identifier' is a NUL
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* terminated filename.
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*/
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void *identifier;
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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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/* Used to serialize calls to read_sha1_file. */
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static pthread_mutex_t read_sha1_mutex;
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#define grep_lock() pthread_mutex_lock(&grep_mutex)
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#define grep_unlock() pthread_mutex_unlock(&grep_mutex)
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#define read_sha1_lock() pthread_mutex_lock(&read_sha1_mutex)
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#define read_sha1_unlock() pthread_mutex_unlock(&read_sha1_mutex)
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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 print_hunk_marks_between_files;
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static int printed_something;
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static void add_work(enum work_type type, char *name, 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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todo[todo_end].type = type;
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todo[todo_end].name = name;
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todo[todo_end].identifier = id;
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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 grep_sha1_async(struct grep_opt *opt, char *name,
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const unsigned char *sha1)
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{
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unsigned char *s;
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s = xmalloc(20);
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memcpy(s, sha1, 20);
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add_work(WORK_SHA1, name, s);
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}
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static void grep_file_async(struct grep_opt *opt, char *name,
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const char *filename)
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{
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add_work(WORK_FILE, name, xstrdup(filename));
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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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if (print_hunk_marks_between_files && printed_something)
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write_or_die(1, "--\n", 3);
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write_or_die(1, w->out.buf, w->out.len);
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printed_something = 1;
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}
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free(w->name);
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free(w->identifier);
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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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if (w->type == WORK_SHA1) {
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unsigned long sz;
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void* data = load_sha1(w->identifier, &sz, w->name);
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if (data) {
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hit |= grep_buffer(opt, w->name, data, sz);
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free(data);
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}
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} else if (w->type == WORK_FILE) {
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size_t sz;
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void* data = load_file(w->identifier, &sz);
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if (data) {
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hit |= grep_buffer(opt, w->name, data, sz);
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free(data);
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}
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} else {
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assert(0);
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}
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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(&read_sha1_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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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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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(&read_sha1_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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return hit;
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}
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#else /* !NO_PTHREADS */
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#define read_sha1_lock()
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#define read_sha1_unlock()
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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_config(const char *var, const char *value, void *cb)
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{
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struct grep_opt *opt = cb;
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char *color = NULL;
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switch (userdiff_config(var, value)) {
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case 0: break;
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case -1: return -1;
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default: return 0;
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}
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if (!strcmp(var, "color.grep"))
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opt->color = git_config_colorbool(var, value, -1);
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else if (!strcmp(var, "color.grep.context"))
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color = opt->color_context;
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else if (!strcmp(var, "color.grep.filename"))
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color = opt->color_filename;
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else if (!strcmp(var, "color.grep.function"))
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color = opt->color_function;
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else if (!strcmp(var, "color.grep.linenumber"))
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color = opt->color_lineno;
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else if (!strcmp(var, "color.grep.match"))
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color = opt->color_match;
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else if (!strcmp(var, "color.grep.selected"))
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color = opt->color_selected;
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else if (!strcmp(var, "color.grep.separator"))
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color = opt->color_sep;
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else
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return git_color_default_config(var, value, cb);
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if (color) {
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if (!value)
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return config_error_nonbool(var);
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color_parse(value, var, color);
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}
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return 0;
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}
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/*
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* Return non-zero if max_depth is negative or path has no more then max_depth
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* slashes.
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*/
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static int accept_subdir(const char *path, int max_depth)
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{
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if (max_depth < 0)
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return 1;
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while ((path = strchr(path, '/')) != NULL) {
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max_depth--;
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if (max_depth < 0)
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return 0;
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path++;
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}
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return 1;
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}
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/*
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* Return non-zero if name is a subdirectory of match and is not too deep.
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*/
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static int is_subdir(const char *name, int namelen,
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const char *match, int matchlen, int max_depth)
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{
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if (matchlen > namelen || strncmp(name, match, matchlen))
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return 0;
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if (name[matchlen] == '\0') /* exact match */
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return 1;
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if (!matchlen || match[matchlen-1] == '/' || name[matchlen] == '/')
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return accept_subdir(name + matchlen + 1, max_depth);
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return 0;
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}
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/*
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* git grep pathspecs are somewhat different from diff-tree pathspecs;
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* pathname wildcards are allowed.
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*/
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static int pathspec_matches(const char **paths, const char *name, int max_depth)
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{
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int namelen, i;
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if (!paths || !*paths)
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return accept_subdir(name, max_depth);
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namelen = strlen(name);
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for (i = 0; paths[i]; i++) {
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const char *match = paths[i];
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int matchlen = strlen(match);
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const char *cp, *meta;
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if (is_subdir(name, namelen, match, matchlen, max_depth))
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return 1;
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if (!fnmatch(match, name, 0))
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return 1;
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if (name[namelen-1] != '/')
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continue;
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/* We are being asked if the directory ("name") is worth
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* descending into.
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*
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* Find the longest leading directory name that does
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* not have metacharacter in the pathspec; the name
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* we are looking at must overlap with that directory.
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*/
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for (cp = match, meta = NULL; cp - match < matchlen; cp++) {
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char ch = *cp;
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if (ch == '*' || ch == '[' || ch == '?') {
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meta = cp;
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break;
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}
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}
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if (!meta)
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meta = cp; /* fully literal */
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if (namelen <= meta - match) {
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/* Looking at "Documentation/" and
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* the pattern says "Documentation/howto/", or
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* "Documentation/diff*.txt". The name we
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* have should match prefix.
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*/
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if (!memcmp(match, name, namelen))
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return 1;
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continue;
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}
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if (meta - match < namelen) {
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/* Looking at "Documentation/howto/" and
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* the pattern says "Documentation/h*";
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* match up to "Do.../h"; this avoids descending
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* into "Documentation/technical/".
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*/
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if (!memcmp(match, name, meta - match))
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return 1;
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continue;
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}
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}
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return 0;
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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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if (use_threads) {
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read_sha1_lock();
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data = read_sha1_file(sha1, type, size);
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read_sha1_unlock();
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} else {
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data = read_sha1_file(sha1, type, size);
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}
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return data;
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}
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static void *load_sha1(const unsigned char *sha1, unsigned long *size,
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const char *name)
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{
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enum object_type type;
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void *data = lock_and_read_sha1_file(sha1, &type, size);
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if (!data)
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error("'%s': unable to read %s", name, sha1_to_hex(sha1));
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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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{
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struct strbuf pathbuf = STRBUF_INIT;
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char *name;
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if (opt->relative && opt->prefix_length) {
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quote_path_relative(filename + tree_name_len, -1, &pathbuf,
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opt->prefix);
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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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name = strbuf_detach(&pathbuf, NULL);
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#ifndef NO_PTHREADS
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if (use_threads) {
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grep_sha1_async(opt, name, sha1);
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return 0;
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} else
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#endif
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{
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int hit;
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unsigned long sz;
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void *data = load_sha1(sha1, &sz, name);
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if (!data)
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hit = 0;
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else
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hit = grep_buffer(opt, name, data, sz);
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free(data);
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free(name);
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return hit;
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}
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}
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static void *load_file(const char *filename, size_t *sz)
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{
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struct stat st;
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char *data;
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int i;
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if (lstat(filename, &st) < 0) {
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err_ret:
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if (errno != ENOENT)
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error("'%s': %s", filename, strerror(errno));
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return 0;
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}
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if (!S_ISREG(st.st_mode))
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return 0;
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*sz = xsize_t(st.st_size);
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i = open(filename, O_RDONLY);
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if (i < 0)
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goto err_ret;
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data = xmalloc(*sz + 1);
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if (st.st_size != read_in_full(i, data, *sz)) {
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error("'%s': short read %s", filename, strerror(errno));
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close(i);
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free(data);
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return 0;
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}
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close(i);
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data[*sz] = 0;
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return data;
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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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char *name;
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if (opt->relative && opt->prefix_length)
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quote_path_relative(filename, -1, &buf, opt->prefix);
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else
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strbuf_addstr(&buf, filename);
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name = strbuf_detach(&buf, NULL);
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|
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#ifndef NO_PTHREADS
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if (use_threads) {
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grep_file_async(opt, name, filename);
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return 0;
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} else
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#endif
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{
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int hit;
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size_t sz;
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|
void *data = load_file(filename, &sz);
|
|
if (!data)
|
|
hit = 0;
|
|
else
|
|
hit = grep_buffer(opt, name, data, sz);
|
|
|
|
free(data);
|
|
free(name);
|
|
return hit;
|
|
}
|
|
}
|
|
|
|
static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
|
|
{
|
|
int hit = 0;
|
|
int nr;
|
|
read_cache();
|
|
|
|
for (nr = 0; nr < active_nr; nr++) {
|
|
struct cache_entry *ce = active_cache[nr];
|
|
if (!S_ISREG(ce->ce_mode))
|
|
continue;
|
|
if (!pathspec_matches(paths, ce->name, opt->max_depth))
|
|
continue;
|
|
/*
|
|
* 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) || ce_skip_worktree(ce)) {
|
|
if (ce_stage(ce))
|
|
continue;
|
|
hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
|
|
}
|
|
else
|
|
hit |= grep_file(opt, ce->name);
|
|
if (ce_stage(ce)) {
|
|
do {
|
|
nr++;
|
|
} while (nr < active_nr &&
|
|
!strcmp(ce->name, active_cache[nr]->name));
|
|
nr--; /* compensate for loop control */
|
|
}
|
|
if (hit && opt->status_only)
|
|
break;
|
|
}
|
|
free_grep_patterns(opt);
|
|
return hit;
|
|
}
|
|
|
|
static int grep_tree(struct grep_opt *opt, const char **paths,
|
|
struct tree_desc *tree,
|
|
const char *tree_name, const char *base)
|
|
{
|
|
int len;
|
|
int hit = 0;
|
|
struct name_entry entry;
|
|
char *down;
|
|
int tn_len = strlen(tree_name);
|
|
struct strbuf pathbuf;
|
|
|
|
strbuf_init(&pathbuf, PATH_MAX + tn_len);
|
|
|
|
if (tn_len) {
|
|
strbuf_add(&pathbuf, tree_name, tn_len);
|
|
strbuf_addch(&pathbuf, ':');
|
|
tn_len = pathbuf.len;
|
|
}
|
|
strbuf_addstr(&pathbuf, base);
|
|
len = pathbuf.len;
|
|
|
|
while (tree_entry(tree, &entry)) {
|
|
int te_len = tree_entry_len(entry.path, entry.sha1);
|
|
pathbuf.len = len;
|
|
strbuf_add(&pathbuf, entry.path, te_len);
|
|
|
|
if (S_ISDIR(entry.mode))
|
|
/* Match "abc/" against pathspec to
|
|
* decide if we want to descend into "abc"
|
|
* directory.
|
|
*/
|
|
strbuf_addch(&pathbuf, '/');
|
|
|
|
down = pathbuf.buf + tn_len;
|
|
if (!pathspec_matches(paths, down, opt->max_depth))
|
|
;
|
|
else if (S_ISREG(entry.mode))
|
|
hit |= grep_sha1(opt, entry.sha1, pathbuf.buf, tn_len);
|
|
else if (S_ISDIR(entry.mode)) {
|
|
enum object_type type;
|
|
struct tree_desc sub;
|
|
void *data;
|
|
unsigned long size;
|
|
|
|
data = lock_and_read_sha1_file(entry.sha1, &type, &size);
|
|
if (!data)
|
|
die("unable to read tree (%s)",
|
|
sha1_to_hex(entry.sha1));
|
|
init_tree_desc(&sub, data, size);
|
|
hit |= grep_tree(opt, paths, &sub, tree_name, down);
|
|
free(data);
|
|
}
|
|
if (hit && opt->status_only)
|
|
break;
|
|
}
|
|
strbuf_release(&pathbuf);
|
|
return hit;
|
|
}
|
|
|
|
static int grep_object(struct grep_opt *opt, const char **paths,
|
|
struct object *obj, const char *name)
|
|
{
|
|
if (obj->type == OBJ_BLOB)
|
|
return grep_sha1(opt, obj->sha1, name, 0);
|
|
if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
|
|
struct tree_desc tree;
|
|
void *data;
|
|
unsigned long size;
|
|
int hit;
|
|
data = read_object_with_reference(obj->sha1, tree_type,
|
|
&size, NULL);
|
|
if (!data)
|
|
die("unable to read tree (%s)", sha1_to_hex(obj->sha1));
|
|
init_tree_desc(&tree, data, size);
|
|
hit = grep_tree(opt, paths, &tree, name, "");
|
|
free(data);
|
|
return hit;
|
|
}
|
|
die("unable to grep from object of type %s", typename(obj->type));
|
|
}
|
|
|
|
static int grep_directory(struct grep_opt *opt, const char **paths)
|
|
{
|
|
struct dir_struct dir;
|
|
int i, hit = 0;
|
|
|
|
memset(&dir, 0, sizeof(dir));
|
|
setup_standard_excludes(&dir);
|
|
|
|
fill_directory(&dir, paths);
|
|
for (i = 0; i < dir.nr; i++) {
|
|
hit |= grep_file(opt, dir.entries[i]->name);
|
|
if (hit && opt->status_only)
|
|
break;
|
|
}
|
|
free_grep_patterns(opt);
|
|
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;
|
|
FILE *patterns;
|
|
int lno = 0;
|
|
struct strbuf sb = STRBUF_INIT;
|
|
|
|
patterns = 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_pattern(grep_opt, strbuf_detach(&sb, NULL), arg,
|
|
++lno, GREP_PATTERN);
|
|
}
|
|
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;
|
|
int seen_dashdash = 0;
|
|
int external_grep_allowed__ignored;
|
|
struct grep_opt opt;
|
|
struct object_array list = { 0, 0, NULL };
|
|
const char **paths = NULL;
|
|
int i;
|
|
int dummy;
|
|
int nongit = 0, use_index = 1;
|
|
struct option options[] = {
|
|
OPT_BOOLEAN(0, "cached", &cached,
|
|
"search in index instead of in the work tree"),
|
|
OPT_BOOLEAN(0, "index", &use_index,
|
|
"--no-index finds in contents not managed by git"),
|
|
OPT_GROUP(""),
|
|
OPT_BOOLEAN('v', "invert-match", &opt.invert,
|
|
"show non-matching lines"),
|
|
OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
|
|
"case insensitive matching"),
|
|
OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
|
|
"match patterns only at word boundaries"),
|
|
OPT_SET_INT('a', "text", &opt.binary,
|
|
"process binary files as text", GREP_BINARY_TEXT),
|
|
OPT_SET_INT('I', NULL, &opt.binary,
|
|
"don't match patterns in binary files",
|
|
GREP_BINARY_NOMATCH),
|
|
{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, "depth",
|
|
"descend at most <depth> levels", PARSE_OPT_NONEG,
|
|
NULL, 1 },
|
|
OPT_GROUP(""),
|
|
OPT_BIT('E', "extended-regexp", &opt.regflags,
|
|
"use extended POSIX regular expressions", REG_EXTENDED),
|
|
OPT_NEGBIT('G', "basic-regexp", &opt.regflags,
|
|
"use basic POSIX regular expressions (default)",
|
|
REG_EXTENDED),
|
|
OPT_BOOLEAN('F', "fixed-strings", &opt.fixed,
|
|
"interpret patterns as fixed strings"),
|
|
OPT_GROUP(""),
|
|
OPT_BOOLEAN('n', NULL, &opt.linenum, "show line numbers"),
|
|
OPT_NEGBIT('h', NULL, &opt.pathname, "don't show filenames", 1),
|
|
OPT_BIT('H', NULL, &opt.pathname, "show filenames", 1),
|
|
OPT_NEGBIT(0, "full-name", &opt.relative,
|
|
"show filenames relative to top directory", 1),
|
|
OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
|
|
"show only filenames instead of matching lines"),
|
|
OPT_BOOLEAN(0, "name-only", &opt.name_only,
|
|
"synonym for --files-with-matches"),
|
|
OPT_BOOLEAN('L', "files-without-match",
|
|
&opt.unmatch_name_only,
|
|
"show only the names of files without match"),
|
|
OPT_BOOLEAN('z', "null", &opt.null_following_name,
|
|
"print NUL after filenames"),
|
|
OPT_BOOLEAN('c', "count", &opt.count,
|
|
"show the number of matches instead of matching lines"),
|
|
OPT__COLOR(&opt.color, "highlight matches"),
|
|
OPT_GROUP(""),
|
|
OPT_CALLBACK('C', NULL, &opt, "n",
|
|
"show <n> context lines before and after matches",
|
|
context_callback),
|
|
OPT_INTEGER('B', NULL, &opt.pre_context,
|
|
"show <n> context lines before matches"),
|
|
OPT_INTEGER('A', NULL, &opt.post_context,
|
|
"show <n> context lines after matches"),
|
|
OPT_NUMBER_CALLBACK(&opt, "shortcut for -C NUM",
|
|
context_callback),
|
|
OPT_BOOLEAN('p', "show-function", &opt.funcname,
|
|
"show a line with the function name before matches"),
|
|
OPT_GROUP(""),
|
|
OPT_CALLBACK('f', NULL, &opt, "file",
|
|
"read patterns from file", file_callback),
|
|
{ OPTION_CALLBACK, 'e', NULL, &opt, "pattern",
|
|
"match <pattern>", PARSE_OPT_NONEG, pattern_callback },
|
|
{ OPTION_CALLBACK, 0, "and", &opt, NULL,
|
|
"combine patterns specified with -e",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
|
|
OPT_BOOLEAN(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_BOOLEAN('q', "quiet", &opt.status_only,
|
|
"indicate hit with exit status without output"),
|
|
OPT_BOOLEAN(0, "all-match", &opt.all_match,
|
|
"show only matches from files that match all patterns"),
|
|
OPT_GROUP(""),
|
|
OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
|
|
"allow calling of grep(1) (ignored by this build)"),
|
|
{ OPTION_CALLBACK, 0, "help-all", &options, NULL, "show usage",
|
|
PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
|
|
OPT_END()
|
|
};
|
|
|
|
prefix = setup_git_directory_gently(&nongit);
|
|
|
|
/*
|
|
* '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);
|
|
|
|
memset(&opt, 0, sizeof(opt));
|
|
opt.prefix = prefix;
|
|
opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
|
|
opt.relative = 1;
|
|
opt.pathname = 1;
|
|
opt.pattern_tail = &opt.pattern_list;
|
|
opt.header_tail = &opt.header_list;
|
|
opt.regflags = REG_NEWLINE;
|
|
opt.max_depth = -1;
|
|
|
|
strcpy(opt.color_context, "");
|
|
strcpy(opt.color_filename, "");
|
|
strcpy(opt.color_function, "");
|
|
strcpy(opt.color_lineno, "");
|
|
strcpy(opt.color_match, GIT_COLOR_BOLD_RED);
|
|
strcpy(opt.color_selected, "");
|
|
strcpy(opt.color_sep, GIT_COLOR_CYAN);
|
|
opt.color = -1;
|
|
git_config(grep_config, &opt);
|
|
if (opt.color == -1)
|
|
opt.color = git_use_color_default;
|
|
|
|
/*
|
|
* 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);
|
|
|
|
if (use_index && nongit)
|
|
/* 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 (!opt.pattern_list)
|
|
die("no pattern given.");
|
|
if (!opt.fixed && opt.ignore_case)
|
|
opt.regflags |= REG_ICASE;
|
|
if ((opt.regflags != REG_NEWLINE) && opt.fixed)
|
|
die("cannot mix --fixed-strings and regexp");
|
|
|
|
#ifndef NO_PTHREADS
|
|
if (online_cpus() == 1 || !grep_threads_ok(&opt))
|
|
use_threads = 0;
|
|
|
|
if (use_threads) {
|
|
if (opt.pre_context || opt.post_context)
|
|
print_hunk_marks_between_files = 1;
|
|
start_threads(&opt);
|
|
}
|
|
#else
|
|
use_threads = 0;
|
|
#endif
|
|
|
|
compile_grep_patterns(&opt);
|
|
|
|
/* Check revs and then paths */
|
|
for (i = 0; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
unsigned char sha1[20];
|
|
/* Is it a rev? */
|
|
if (!get_sha1(arg, sha1)) {
|
|
struct object *object = parse_object(sha1);
|
|
if (!object)
|
|
die("bad object %s", arg);
|
|
add_object_array(object, arg, &list);
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--")) {
|
|
i++;
|
|
seen_dashdash = 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* The rest are paths */
|
|
if (!seen_dashdash) {
|
|
int j;
|
|
for (j = i; j < argc; j++)
|
|
verify_filename(prefix, argv[j]);
|
|
}
|
|
|
|
if (i < argc)
|
|
paths = get_pathspec(prefix, argv + i);
|
|
else if (prefix) {
|
|
paths = xcalloc(2, sizeof(const char *));
|
|
paths[0] = prefix;
|
|
paths[1] = NULL;
|
|
}
|
|
|
|
if (!use_index) {
|
|
int hit;
|
|
if (cached)
|
|
die("--cached cannot be used with --no-index.");
|
|
if (list.nr)
|
|
die("--no-index cannot be used with revs.");
|
|
hit = grep_directory(&opt, paths);
|
|
if (use_threads)
|
|
hit |= wait_all();
|
|
return !hit;
|
|
}
|
|
|
|
if (!list.nr) {
|
|
int hit;
|
|
if (!cached)
|
|
setup_work_tree();
|
|
|
|
hit = grep_cache(&opt, paths, cached);
|
|
if (use_threads)
|
|
hit |= wait_all();
|
|
return !hit;
|
|
}
|
|
|
|
if (cached)
|
|
die("both --cached and trees are given.");
|
|
|
|
for (i = 0; i < list.nr; i++) {
|
|
struct object *real_obj;
|
|
real_obj = deref_tag(list.objects[i].item, NULL, 0);
|
|
if (grep_object(&opt, paths, real_obj, list.objects[i].name)) {
|
|
hit = 1;
|
|
if (opt.status_only)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (use_threads)
|
|
hit |= wait_all();
|
|
free_grep_patterns(&opt);
|
|
return !hit;
|
|
}
|