#include "tag.h"
#include "tree-walk.h"
#include "builtin.h"
+#include "parse-options.h"
+#include "userdiff.h"
#include "grep.h"
+#include "quote.h"
-#ifndef NO_EXTERNAL_GREP
-#ifdef __unix__
-#define NO_EXTERNAL_GREP 0
-#else
-#define NO_EXTERNAL_GREP 1
-#endif
+#ifndef NO_PTHREADS
+#include "thread-utils.h"
+#include <pthread.h>
#endif
-static int builtin_grep;
+static char const * const grep_usage[] = {
+ "git grep [options] [-e] <pattern> [<rev>...] [[--] path...]",
+ NULL
+};
+
+static int use_threads = 1;
+
+#ifndef NO_PTHREADS
+#define THREADS 8
+static pthread_t threads[THREADS];
+
+static void *load_sha1(const unsigned char *sha1, unsigned long *size,
+ const char *name);
+static void *load_file(const char *filename, size_t *sz);
+
+enum work_type {WORK_SHA1, WORK_FILE};
+
+/* We use one producer thread and THREADS consumer
+ * threads. The producer adds struct work_items to 'todo' and the
+ * consumers pick work items from the same array.
+ */
+struct work_item
+{
+ enum work_type type;
+ char *name;
+
+ /* if type == WORK_SHA1, then 'identifier' is a SHA1,
+ * otherwise type == WORK_FILE, and 'identifier' is a NUL
+ * terminated filename.
+ */
+ void *identifier;
+ char done;
+ struct strbuf out;
+};
+
+/* In the range [todo_done, todo_start) in 'todo' we have work_items
+ * that have been or are processed by a consumer thread. We haven't
+ * written the result for these to stdout yet.
+ *
+ * The work_items in [todo_start, todo_end) are waiting to be picked
+ * up by a consumer thread.
+ *
+ * The ranges are modulo TODO_SIZE.
+ */
+#define TODO_SIZE 128
+static struct work_item todo[TODO_SIZE];
+static int todo_start;
+static int todo_end;
+static int todo_done;
+
+/* Has all work items been added? */
+static int all_work_added;
+
+/* This lock protects all the variables above. */
+static pthread_mutex_t grep_mutex;
+
+/* Used to serialize calls to read_sha1_file. */
+static pthread_mutex_t read_sha1_mutex;
+
+#define grep_lock() pthread_mutex_lock(&grep_mutex)
+#define grep_unlock() pthread_mutex_unlock(&grep_mutex)
+#define read_sha1_lock() pthread_mutex_lock(&read_sha1_mutex)
+#define read_sha1_unlock() pthread_mutex_unlock(&read_sha1_mutex)
+
+/* Signalled when a new work_item is added to todo. */
+static pthread_cond_t cond_add;
+
+/* Signalled when the result from one work_item is written to
+ * stdout.
+ */
+static pthread_cond_t cond_write;
+
+/* Signalled when we are finished with everything. */
+static pthread_cond_t cond_result;
+
+static void add_work(enum work_type type, char *name, void *id)
+{
+ grep_lock();
+
+ while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
+ pthread_cond_wait(&cond_write, &grep_mutex);
+ }
+
+ todo[todo_end].type = type;
+ todo[todo_end].name = name;
+ todo[todo_end].identifier = id;
+ todo[todo_end].done = 0;
+ strbuf_reset(&todo[todo_end].out);
+ todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
+
+ pthread_cond_signal(&cond_add);
+ grep_unlock();
+}
+
+static struct work_item *get_work(void)
+{
+ struct work_item *ret;
+
+ grep_lock();
+ while (todo_start == todo_end && !all_work_added) {
+ pthread_cond_wait(&cond_add, &grep_mutex);
+ }
+
+ if (todo_start == todo_end && all_work_added) {
+ ret = NULL;
+ } else {
+ ret = &todo[todo_start];
+ todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
+ }
+ grep_unlock();
+ return ret;
+}
+
+static void grep_sha1_async(struct grep_opt *opt, char *name,
+ const unsigned char *sha1)
+{
+ unsigned char *s;
+ s = xmalloc(20);
+ memcpy(s, sha1, 20);
+ add_work(WORK_SHA1, name, s);
+}
+
+static void grep_file_async(struct grep_opt *opt, char *name,
+ const char *filename)
+{
+ add_work(WORK_FILE, name, xstrdup(filename));
+}
+
+static void work_done(struct work_item *w)
+{
+ int old_done;
+
+ grep_lock();
+ w->done = 1;
+ old_done = todo_done;
+ for(; todo[todo_done].done && todo_done != todo_start;
+ todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
+ w = &todo[todo_done];
+ write_or_die(1, w->out.buf, w->out.len);
+ free(w->name);
+ free(w->identifier);
+ }
+
+ if (old_done != todo_done)
+ pthread_cond_signal(&cond_write);
+
+ if (all_work_added && todo_done == todo_end)
+ pthread_cond_signal(&cond_result);
+
+ grep_unlock();
+}
+
+static void *run(void *arg)
+{
+ int hit = 0;
+ struct grep_opt *opt = arg;
+
+ while (1) {
+ struct work_item *w = get_work();
+ if (!w)
+ break;
+
+ opt->output_priv = w;
+ if (w->type == WORK_SHA1) {
+ unsigned long sz;
+ void* data = load_sha1(w->identifier, &sz, w->name);
+
+ if (data) {
+ hit |= grep_buffer(opt, w->name, data, sz);
+ free(data);
+ }
+ } else if (w->type == WORK_FILE) {
+ size_t sz;
+ void* data = load_file(w->identifier, &sz);
+ if (data) {
+ hit |= grep_buffer(opt, w->name, data, sz);
+ free(data);
+ }
+ } else {
+ assert(0);
+ }
+
+ work_done(w);
+ }
+ free_grep_patterns(arg);
+ free(arg);
+
+ return (void*) (intptr_t) hit;
+}
+
+static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
+{
+ struct work_item *w = opt->output_priv;
+ strbuf_add(&w->out, buf, size);
+}
+
+static void start_threads(struct grep_opt *opt)
+{
+ int i;
+
+ pthread_mutex_init(&grep_mutex, NULL);
+ pthread_mutex_init(&read_sha1_mutex, NULL);
+ pthread_cond_init(&cond_add, NULL);
+ pthread_cond_init(&cond_write, NULL);
+ pthread_cond_init(&cond_result, NULL);
+
+ for (i = 0; i < ARRAY_SIZE(todo); i++) {
+ strbuf_init(&todo[i].out, 0);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(threads); i++) {
+ int err;
+ struct grep_opt *o = grep_opt_dup(opt);
+ o->output = strbuf_out;
+ compile_grep_patterns(o);
+ err = pthread_create(&threads[i], NULL, run, o);
+
+ if (err)
+ die("grep: failed to create thread: %s",
+ strerror(err));
+ }
+}
+
+static int wait_all(void)
+{
+ int hit = 0;
+ int i;
+
+ grep_lock();
+ all_work_added = 1;
+
+ /* Wait until all work is done. */
+ while (todo_done != todo_end)
+ pthread_cond_wait(&cond_result, &grep_mutex);
+
+ /* Wake up all the consumer threads so they can see that there
+ * is no more work to do.
+ */
+ pthread_cond_broadcast(&cond_add);
+ grep_unlock();
+
+ for (i = 0; i < ARRAY_SIZE(threads); i++) {
+ void *h;
+ pthread_join(threads[i], &h);
+ hit |= (int) (intptr_t) h;
+ }
+
+ pthread_mutex_destroy(&grep_mutex);
+ pthread_mutex_destroy(&read_sha1_mutex);
+ pthread_cond_destroy(&cond_add);
+ pthread_cond_destroy(&cond_write);
+ pthread_cond_destroy(&cond_result);
+
+ return hit;
+}
+#else /* !NO_PTHREADS */
+#define read_sha1_lock()
+#define read_sha1_unlock()
+
+static int wait_all(void)
+{
+ return 0;
+}
+#endif
static int grep_config(const char *var, const char *value, void *cb)
{
struct grep_opt *opt = cb;
+ switch (userdiff_config(var, value)) {
+ case 0: break;
+ case -1: return -1;
+ default: return 0;
+ }
+
if (!strcmp(var, "color.grep")) {
opt->color = git_config_colorbool(var, value, -1);
return 0;
}
- if (!strcmp(var, "color.grep.external"))
- return git_config_string(&(opt->color_external), var, value);
if (!strcmp(var, "color.grep.match")) {
if (!value)
return config_error_nonbool(var);
return git_color_default_config(var, value, cb);
}
+/*
+ * Return non-zero if max_depth is negative or path has no more then max_depth
+ * slashes.
+ */
+static int accept_subdir(const char *path, int max_depth)
+{
+ if (max_depth < 0)
+ return 1;
+
+ while ((path = strchr(path, '/')) != NULL) {
+ max_depth--;
+ if (max_depth < 0)
+ return 0;
+ path++;
+ }
+ return 1;
+}
+
+/*
+ * Return non-zero if name is a subdirectory of match and is not too deep.
+ */
+static int is_subdir(const char *name, int namelen,
+ const char *match, int matchlen, int max_depth)
+{
+ if (matchlen > namelen || strncmp(name, match, matchlen))
+ return 0;
+
+ if (name[matchlen] == '\0') /* exact match */
+ return 1;
+
+ if (!matchlen || match[matchlen-1] == '/' || name[matchlen] == '/')
+ return accept_subdir(name + matchlen + 1, max_depth);
+
+ return 0;
+}
+
/*
* git grep pathspecs are somewhat different from diff-tree pathspecs;
* pathname wildcards are allowed.
*/
-static int pathspec_matches(const char **paths, const char *name)
+static int pathspec_matches(const char **paths, const char *name, int max_depth)
{
int namelen, i;
if (!paths || !*paths)
- return 1;
+ return accept_subdir(name, max_depth);
namelen = strlen(name);
for (i = 0; paths[i]; i++) {
const char *match = paths[i];
int matchlen = strlen(match);
const char *cp, *meta;
- if (!matchlen ||
- ((matchlen <= namelen) &&
- !strncmp(name, match, matchlen) &&
- (match[matchlen-1] == '/' ||
- name[matchlen] == '\0' || name[matchlen] == '/')))
+ if (is_subdir(name, namelen, match, matchlen, max_depth))
return 1;
if (!fnmatch(match, name, 0))
return 1;
return 0;
}
-static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name, int tree_name_len)
+static void *load_sha1(const unsigned char *sha1, unsigned long *size,
+ const char *name)
{
- unsigned long size;
- char *data;
enum object_type type;
- char *to_free = NULL;
- int hit;
+ char *data;
- data = read_sha1_file(sha1, &type, &size);
- if (!data) {
+ read_sha1_lock();
+ data = read_sha1_file(sha1, &type, size);
+ read_sha1_unlock();
+
+ if (!data)
error("'%s': unable to read %s", name, sha1_to_hex(sha1));
- return 0;
- }
+
+ return data;
+}
+
+static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
+ const char *filename, int tree_name_len)
+{
+ struct strbuf pathbuf = STRBUF_INIT;
+ char *name;
+
if (opt->relative && opt->prefix_length) {
- static char name_buf[PATH_MAX];
- char *cp;
- int name_len = strlen(name) - opt->prefix_length + 1;
-
- if (!tree_name_len)
- name += opt->prefix_length;
- else {
- if (ARRAY_SIZE(name_buf) <= name_len)
- cp = to_free = xmalloc(name_len);
- else
- cp = name_buf;
- memcpy(cp, name, tree_name_len);
- strcpy(cp + tree_name_len,
- name + tree_name_len + opt->prefix_length);
- name = cp;
- }
+ quote_path_relative(filename + tree_name_len, -1, &pathbuf,
+ opt->prefix);
+ strbuf_insert(&pathbuf, 0, filename, tree_name_len);
+ } else {
+ strbuf_addstr(&pathbuf, filename);
+ }
+
+ name = strbuf_detach(&pathbuf, NULL);
+
+#ifndef NO_PTHREADS
+ if (use_threads) {
+ grep_sha1_async(opt, name, sha1);
+ return 0;
+ } else
+#endif
+ {
+ int hit;
+ unsigned long sz;
+ void *data = load_sha1(sha1, &sz, name);
+ if (!data)
+ hit = 0;
+ else
+ hit = grep_buffer(opt, name, data, sz);
+
+ free(data);
+ free(name);
+ return hit;
}
- hit = grep_buffer(opt, name, data, size);
- free(data);
- free(to_free);
- return hit;
}
-static int grep_file(struct grep_opt *opt, const char *filename)
+static void *load_file(const char *filename, size_t *sz)
{
struct stat st;
- int i;
char *data;
- size_t sz;
+ int i;
if (lstat(filename, &st) < 0) {
err_ret:
error("'%s': %s", filename, strerror(errno));
return 0;
}
- if (!st.st_size)
- return 0; /* empty file -- no grep hit */
if (!S_ISREG(st.st_mode))
return 0;
- sz = xsize_t(st.st_size);
+ *sz = xsize_t(st.st_size);
i = open(filename, O_RDONLY);
if (i < 0)
goto err_ret;
- data = xmalloc(sz + 1);
- if (st.st_size != read_in_full(i, data, sz)) {
+ data = xmalloc(*sz + 1);
+ if (st.st_size != read_in_full(i, data, *sz)) {
error("'%s': short read %s", filename, strerror(errno));
close(i);
free(data);
return 0;
}
close(i);
- if (opt->relative && opt->prefix_length)
- filename += opt->prefix_length;
- i = grep_buffer(opt, filename, data, sz);
- free(data);
- return i;
-}
-
-#if !NO_EXTERNAL_GREP
-static int exec_grep(int argc, const char **argv)
-{
- pid_t pid;
- int status;
-
- argv[argc] = NULL;
- pid = fork();
- if (pid < 0)
- return pid;
- if (!pid) {
- execvp("grep", (char **) argv);
- exit(255);
- }
- while (waitpid(pid, &status, 0) < 0) {
- if (errno == EINTR)
- continue;
- return -1;
- }
- if (WIFEXITED(status)) {
- if (!WEXITSTATUS(status))
- return 1;
- return 0;
- }
- return -1;
-}
-
-#define MAXARGS 1000
-#define ARGBUF 4096
-#define push_arg(a) do { \
- if (nr < MAXARGS) argv[nr++] = (a); \
- else die("maximum number of args exceeded"); \
- } while (0)
-
-/*
- * If you send a singleton filename to grep, it does not give
- * the name of the file. GNU grep has "-H" but we would want
- * that behaviour in a portable way.
- *
- * So we keep two pathnames in argv buffer unsent to grep in
- * the main loop if we need to do more than one grep.
- */
-static int flush_grep(struct grep_opt *opt,
- int argc, int arg0, const char **argv, int *kept)
-{
- int status;
- int count = argc - arg0;
- const char *kept_0 = NULL;
-
- if (count <= 2) {
- /*
- * Because we keep at least 2 paths in the call from
- * the main loop (i.e. kept != NULL), and MAXARGS is
- * far greater than 2, this usually is a call to
- * conclude the grep. However, the user could attempt
- * to overflow the argv buffer by giving too many
- * options to leave very small number of real
- * arguments even for the call in the main loop.
- */
- if (kept)
- die("insanely many options to grep");
-
- /*
- * If we have two or more paths, we do not have to do
- * anything special, but we need to push /dev/null to
- * get "-H" behaviour of GNU grep portably but when we
- * are not doing "-l" nor "-L" nor "-c".
- */
- if (count == 1 &&
- !opt->name_only &&
- !opt->unmatch_name_only &&
- !opt->count) {
- argv[argc++] = "/dev/null";
- argv[argc] = NULL;
- }
- }
-
- else if (kept) {
- /*
- * Called because we found many paths and haven't finished
- * iterating over the cache yet. We keep two paths
- * for the concluding call. argv[argc-2] and argv[argc-1]
- * has the last two paths, so save the first one away,
- * replace it with NULL while sending the list to grep,
- * and recover them after we are done.
- */
- *kept = 2;
- kept_0 = argv[argc-2];
- argv[argc-2] = NULL;
- argc -= 2;
- }
-
- status = exec_grep(argc, argv);
-
- if (kept_0) {
- /*
- * Then recover them. Now the last arg is beyond the
- * terminating NULL which is at argc, and the second
- * from the last is what we saved away in kept_0
- */
- argv[arg0++] = kept_0;
- argv[arg0] = argv[argc+1];
- }
- return status;
+ data[*sz] = 0;
+ return data;
}
-static void grep_add_color(struct strbuf *sb, const char *escape_seq)
-{
- size_t orig_len = sb->len;
-
- while (*escape_seq) {
- if (*escape_seq == 'm')
- strbuf_addch(sb, ';');
- else if (*escape_seq != '\033' && *escape_seq != '[')
- strbuf_addch(sb, *escape_seq);
- escape_seq++;
- }
- if (sb->len > orig_len && sb->buf[sb->len - 1] == ';')
- strbuf_setlen(sb, sb->len - 1);
-}
-
-static int external_grep(struct grep_opt *opt, const char **paths, int cached)
+static int grep_file(struct grep_opt *opt, const char *filename)
{
- int i, nr, argc, hit, len, status;
- const char *argv[MAXARGS+1];
- char randarg[ARGBUF];
- char *argptr = randarg;
- struct grep_pat *p;
-
- if (opt->extended || (opt->relative && opt->prefix_length))
- return -1;
- len = nr = 0;
- push_arg("grep");
- if (opt->fixed)
- push_arg("-F");
- if (opt->linenum)
- push_arg("-n");
- if (!opt->pathname)
- push_arg("-h");
- if (opt->regflags & REG_EXTENDED)
- push_arg("-E");
- if (opt->regflags & REG_ICASE)
- push_arg("-i");
- if (opt->binary == GREP_BINARY_NOMATCH)
- push_arg("-I");
- if (opt->word_regexp)
- push_arg("-w");
- if (opt->name_only)
- push_arg("-l");
- if (opt->unmatch_name_only)
- push_arg("-L");
- if (opt->null_following_name)
- /* in GNU grep git's "-z" translates to "-Z" */
- push_arg("-Z");
- if (opt->count)
- push_arg("-c");
- if (opt->post_context || opt->pre_context) {
- if (opt->post_context != opt->pre_context) {
- if (opt->pre_context) {
- push_arg("-B");
- len += snprintf(argptr, sizeof(randarg)-len,
- "%u", opt->pre_context) + 1;
- if (sizeof(randarg) <= len)
- die("maximum length of args exceeded");
- push_arg(argptr);
- argptr += len;
- }
- if (opt->post_context) {
- push_arg("-A");
- len += snprintf(argptr, sizeof(randarg)-len,
- "%u", opt->post_context) + 1;
- if (sizeof(randarg) <= len)
- die("maximum length of args exceeded");
- push_arg(argptr);
- argptr += len;
- }
- }
- else {
- push_arg("-C");
- len += snprintf(argptr, sizeof(randarg)-len,
- "%u", opt->post_context) + 1;
- if (sizeof(randarg) <= len)
- die("maximum length of args exceeded");
- push_arg(argptr);
- argptr += len;
- }
- }
- for (p = opt->pattern_list; p; p = p->next) {
- push_arg("-e");
- push_arg(p->pattern);
- }
- if (opt->color) {
- struct strbuf sb = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ char *name;
- grep_add_color(&sb, opt->color_match);
- setenv("GREP_COLOR", sb.buf, 1);
-
- strbuf_reset(&sb);
- strbuf_addstr(&sb, "mt=");
- grep_add_color(&sb, opt->color_match);
- strbuf_addstr(&sb, ":sl=:cx=:fn=:ln=:bn=:se=");
- setenv("GREP_COLORS", sb.buf, 1);
-
- strbuf_release(&sb);
-
- if (opt->color_external && strlen(opt->color_external) > 0)
- push_arg(opt->color_external);
- }
+ if (opt->relative && opt->prefix_length)
+ quote_path_relative(filename, -1, &buf, opt->prefix);
+ else
+ strbuf_addstr(&buf, filename);
+ name = strbuf_detach(&buf, NULL);
+
+#ifndef NO_PTHREADS
+ if (use_threads) {
+ grep_file_async(opt, name, filename);
+ return 0;
+ } else
+#endif
+ {
+ int hit;
+ size_t sz;
+ void *data = load_file(filename, &sz);
+ if (!data)
+ hit = 0;
+ else
+ hit = grep_buffer(opt, name, data, sz);
- hit = 0;
- argc = nr;
- for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce = active_cache[i];
- char *name;
- int kept;
- if (!S_ISREG(ce->ce_mode))
- continue;
- if (!pathspec_matches(paths, ce->name))
- continue;
- name = ce->name;
- if (name[0] == '-') {
- int len = ce_namelen(ce);
- name = xmalloc(len + 3);
- memcpy(name, "./", 2);
- memcpy(name + 2, ce->name, len + 1);
- }
- argv[argc++] = name;
- if (MAXARGS <= argc) {
- status = flush_grep(opt, argc, nr, argv, &kept);
- if (0 < status)
- hit = 1;
- argc = nr + kept;
- }
- if (ce_stage(ce)) {
- do {
- i++;
- } while (i < active_nr &&
- !strcmp(ce->name, active_cache[i]->name));
- i--; /* compensate for loop control */
- }
- }
- if (argc > nr) {
- status = flush_grep(opt, argc, nr, argv, NULL);
- if (0 < status)
- hit = 1;
+ free(data);
+ free(name);
+ return hit;
}
- return hit;
}
-#endif
static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
{
int nr;
read_cache();
-#if !NO_EXTERNAL_GREP
- /*
- * Use the external "grep" command for the case where
- * we grep through the checked-out files. It tends to
- * be a lot more optimized
- */
- if (!cached && !builtin_grep) {
- hit = external_grep(opt, paths, cached);
- if (hit >= 0)
- return hit;
- }
-#endif
-
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))
+ 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)) {
+ 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);
!strcmp(ce->name, active_cache[nr]->name));
nr--; /* compensate for loop control */
}
+ if (hit && opt->status_only)
+ break;
}
free_grep_patterns(opt);
return hit;
strbuf_addch(&pathbuf, '/');
down = pathbuf.buf + tn_len;
- if (!pathspec_matches(paths, down))
+ if (!pathspec_matches(paths, down, opt->max_depth))
;
else if (S_ISREG(entry.mode))
hit |= grep_sha1(opt, entry.sha1, pathbuf.buf, tn_len);
void *data;
unsigned long size;
+ read_sha1_lock();
data = read_sha1_file(entry.sha1, &type, &size);
+ read_sha1_unlock();
+
if (!data)
die("unable to read tree (%s)",
sha1_to_hex(entry.sha1));
hit |= grep_tree(opt, paths, &sub, tree_name, down);
free(data);
}
+ if (hit && opt->status_only)
+ break;
}
strbuf_release(&pathbuf);
return hit;
die("unable to grep from object of type %s", typename(obj->type));
}
-static const char builtin_grep_usage[] =
-"git grep <option>* [-e] <pattern> <rev>* [[--] <path>...]";
+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 const char emsg_invalid_context_len[] =
-"%s: invalid context length argument";
-static const char emsg_missing_context_len[] =
-"missing context length argument";
-static const char emsg_missing_argument[] =
-"option requires an argument -%s";
+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;
+ struct option options[] = {
+ OPT_BOOLEAN(0, "cached", &cached,
+ "search in index instead of in the work tree"),
+ 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_SET_INT(0, "color", &opt.color, "highlight matches", 1),
+ 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()
+ };
+
+ /*
+ * '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.regflags = REG_NEWLINE;
+ opt.max_depth = -1;
strcpy(opt.color_match, GIT_COLOR_RED GIT_COLOR_BOLD);
opt.color = -1;
* unrecognized non option is the beginning of the refs list
* that continues up to the -- (if exists), and then paths.
*/
-
- while (1 < argc) {
- const char *arg = argv[1];
- argc--; argv++;
- if (!strcmp("--cached", arg)) {
- cached = 1;
- continue;
- }
- if (!strcmp("--no-ext-grep", arg)) {
- builtin_grep = 1;
- continue;
- }
- if (!strcmp("-a", arg) ||
- !strcmp("--text", arg)) {
- opt.binary = GREP_BINARY_TEXT;
- continue;
- }
- if (!strcmp("-i", arg) ||
- !strcmp("--ignore-case", arg)) {
- opt.regflags |= REG_ICASE;
- continue;
- }
- if (!strcmp("-I", arg)) {
- opt.binary = GREP_BINARY_NOMATCH;
- continue;
- }
- if (!strcmp("-v", arg) ||
- !strcmp("--invert-match", arg)) {
- opt.invert = 1;
- continue;
- }
- if (!strcmp("-E", arg) ||
- !strcmp("--extended-regexp", arg)) {
- opt.regflags |= REG_EXTENDED;
- continue;
- }
- if (!strcmp("-F", arg) ||
- !strcmp("--fixed-strings", arg)) {
- opt.fixed = 1;
- continue;
- }
- if (!strcmp("-G", arg) ||
- !strcmp("--basic-regexp", arg)) {
- opt.regflags &= ~REG_EXTENDED;
- continue;
- }
- if (!strcmp("-n", arg)) {
- opt.linenum = 1;
- continue;
- }
- if (!strcmp("-h", arg)) {
- opt.pathname = 0;
- continue;
- }
- if (!strcmp("-H", arg)) {
- opt.pathname = 1;
- continue;
- }
- if (!strcmp("-l", arg) ||
- !strcmp("--name-only", arg) ||
- !strcmp("--files-with-matches", arg)) {
- opt.name_only = 1;
- continue;
- }
- if (!strcmp("-L", arg) ||
- !strcmp("--files-without-match", arg)) {
- opt.unmatch_name_only = 1;
- continue;
- }
- if (!strcmp("-z", arg) ||
- !strcmp("--null", arg)) {
- opt.null_following_name = 1;
- continue;
- }
- if (!strcmp("-c", arg) ||
- !strcmp("--count", arg)) {
- opt.count = 1;
- continue;
- }
- if (!strcmp("-w", arg) ||
- !strcmp("--word-regexp", arg)) {
- opt.word_regexp = 1;
- continue;
- }
- if (!prefixcmp(arg, "-A") ||
- !prefixcmp(arg, "-B") ||
- !prefixcmp(arg, "-C") ||
- (arg[0] == '-' && '1' <= arg[1] && arg[1] <= '9')) {
- unsigned num;
- const char *scan;
- switch (arg[1]) {
- case 'A': case 'B': case 'C':
- if (!arg[2]) {
- if (argc <= 1)
- die(emsg_missing_context_len);
- scan = *++argv;
- argc--;
- }
- else
- scan = arg + 2;
- break;
- default:
- scan = arg + 1;
- break;
- }
- if (strtoul_ui(scan, 10, &num))
- die(emsg_invalid_context_len, scan);
- switch (arg[1]) {
- case 'A':
- opt.post_context = num;
- break;
- default:
- case 'C':
- opt.post_context = num;
- case 'B':
- opt.pre_context = num;
- break;
- }
- continue;
- }
- if (!strcmp("-f", arg)) {
- FILE *patterns;
- int lno = 0;
- char buf[1024];
- if (argc <= 1)
- die(emsg_missing_argument, arg);
- patterns = fopen(argv[1], "r");
- if (!patterns)
- die("'%s': %s", argv[1], strerror(errno));
- while (fgets(buf, sizeof(buf), patterns)) {
- int len = strlen(buf);
- if (len && buf[len-1] == '\n')
- buf[len-1] = 0;
- /* ignore empty line like grep does */
- if (!buf[0])
- continue;
- append_grep_pattern(&opt, xstrdup(buf),
- argv[1], ++lno,
- GREP_PATTERN);
- }
- fclose(patterns);
- argv++;
- argc--;
- continue;
- }
- if (!strcmp("--not", arg)) {
- append_grep_pattern(&opt, arg, "command line", 0,
- GREP_NOT);
- continue;
- }
- if (!strcmp("--and", arg)) {
- append_grep_pattern(&opt, arg, "command line", 0,
- GREP_AND);
- continue;
- }
- if (!strcmp("--or", arg))
- continue; /* no-op */
- if (!strcmp("(", arg)) {
- append_grep_pattern(&opt, arg, "command line", 0,
- GREP_OPEN_PAREN);
- continue;
- }
- if (!strcmp(")", arg)) {
- append_grep_pattern(&opt, arg, "command line", 0,
- GREP_CLOSE_PAREN);
- continue;
- }
- if (!strcmp("--all-match", arg)) {
- opt.all_match = 1;
- continue;
- }
- if (!strcmp("-e", arg)) {
- if (1 < argc) {
- append_grep_pattern(&opt, argv[1],
- "-e option", 0,
- GREP_PATTERN);
- argv++;
- argc--;
- continue;
- }
- die(emsg_missing_argument, arg);
- }
- if (!strcmp("--full-name", arg)) {
- opt.relative = 0;
- continue;
- }
- if (!strcmp("--color", arg)) {
- opt.color = 1;
- continue;
- }
- if (!strcmp("--no-color", arg)) {
- opt.color = 0;
- continue;
- }
- if (!strcmp("--", arg)) {
- /* later processing wants to have this at argv[1] */
- argv--;
- argc++;
- break;
- }
- if (*arg == '-')
- usage(builtin_grep_usage);
-
- /* First unrecognized non-option token */
- if (!opt.pattern_list) {
- append_grep_pattern(&opt, arg, "command line", 0,
- GREP_PATTERN);
- break;
- }
- else {
- /* We are looking at the first path or rev;
- * it is found at argv[1] after leaving the
- * loop.
- */
- argc++; argv--;
- break;
- }
+ argc = parse_options(argc, argv, prefix, options, grep_usage,
+ PARSE_OPT_KEEP_DASHDASH |
+ PARSE_OPT_STOP_AT_NON_OPTION |
+ PARSE_OPT_NO_INTERNAL_HELP);
+
+ /* 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.color && !opt.color_external)
- builtin_grep = 1;
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)
+ start_threads(&opt);
+#else
+ use_threads = 0;
+#endif
+
compile_grep_patterns(&opt);
/* Check revs and then paths */
- for (i = 1; i < argc; i++) {
+ for (i = 0; i < argc; i++) {
const char *arg = argv[i];
unsigned char sha1[20];
/* Is it a rev? */
verify_filename(prefix, argv[j]);
}
- if (i < argc) {
+ if (i < argc)
paths = get_pathspec(prefix, argv + i);
- if (opt.prefix_length && opt.relative) {
- /* Make sure we do not get outside of paths */
- for (i = 0; paths[i]; i++)
- if (strncmp(prefix, paths[i], opt.prefix_length))
- die("git grep: cannot generate relative filenames containing '..'");
- }
- }
else if (prefix) {
paths = xcalloc(2, sizeof(const char *));
paths[0] = prefix;
}
if (!list.nr) {
+ int hit;
if (!cached)
setup_work_tree();
- return !grep_cache(&opt, paths, cached);
+
+ hit = grep_cache(&opt, paths, cached);
+ if (use_threads)
+ hit |= wait_all();
+ return !hit;
}
if (cached)
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))
+ 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;
}
projects / git.git / blobdiff