| /* |
| * Builtin "git grep" |
| * |
| * Copyright (c) 2006 Junio C Hamano |
| */ |
| #include "cache.h" |
| #include "blob.h" |
| #include "tree.h" |
| #include "commit.h" |
| #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_PTHREADS |
| #include "thread-utils.h" |
| #include <pthread.h> |
| #endif |
| |
| 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.match")) { |
| if (!value) |
| return config_error_nonbool(var); |
| color_parse(value, var, opt->color_match); |
| return 0; |
| } |
| 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, int max_depth) |
| { |
| int namelen, i; |
| if (!paths || !*paths) |
| 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 (is_subdir(name, namelen, match, matchlen, max_depth)) |
| return 1; |
| if (!fnmatch(match, name, 0)) |
| return 1; |
| if (name[namelen-1] != '/') |
| continue; |
| |
| /* We are being asked if the directory ("name") is worth |
| * descending into. |
| * |
| * Find the longest leading directory name that does |
| * not have metacharacter in the pathspec; the name |
| * we are looking at must overlap with that directory. |
| */ |
| for (cp = match, meta = NULL; cp - match < matchlen; cp++) { |
| char ch = *cp; |
| if (ch == '*' || ch == '[' || ch == '?') { |
| meta = cp; |
| break; |
| } |
| } |
| if (!meta) |
| meta = cp; /* fully literal */ |
| |
| if (namelen <= meta - match) { |
| /* Looking at "Documentation/" and |
| * the pattern says "Documentation/howto/", or |
| * "Documentation/diff*.txt". The name we |
| * have should match prefix. |
| */ |
| if (!memcmp(match, name, namelen)) |
| return 1; |
| continue; |
| } |
| |
| if (meta - match < namelen) { |
| /* Looking at "Documentation/howto/" and |
| * the pattern says "Documentation/h*"; |
| * match up to "Do.../h"; this avoids descending |
| * into "Documentation/technical/". |
| */ |
| if (!memcmp(match, name, meta - match)) |
| return 1; |
| continue; |
| } |
| } |
| return 0; |
| } |
| |
| static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) |
| { |
| void *data; |
| |
| if (use_threads) { |
| read_sha1_lock(); |
| data = read_sha1_file(sha1, type, size); |
| read_sha1_unlock(); |
| } else { |
| data = read_sha1_file(sha1, type, size); |
| } |
| return data; |
| } |
| |
| static void *load_sha1(const unsigned char *sha1, unsigned long *size, |
| const char *name) |
| { |
| enum object_type type; |
| void *data = lock_and_read_sha1_file(sha1, &type, size); |
| |
| if (!data) |
| error("'%s': unable to read %s", name, sha1_to_hex(sha1)); |
| |
| 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) { |
| 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; |
| } |
| } |
| |
| static void *load_file(const char *filename, size_t *sz) |
| { |
| struct stat st; |
| char *data; |
| int i; |
| |
| if (lstat(filename, &st) < 0) { |
| err_ret: |
| if (errno != ENOENT) |
| error("'%s': %s", filename, strerror(errno)); |
| return 0; |
| } |
| if (!S_ISREG(st.st_mode)) |
| return 0; |
| *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)) { |
| error("'%s': short read %s", filename, strerror(errno)); |
| close(i); |
| free(data); |
| return 0; |
| } |
| close(i); |
| data[*sz] = 0; |
| return data; |
| } |
| |
| static int grep_file(struct grep_opt *opt, const char *filename) |
| { |
| struct strbuf buf = STRBUF_INIT; |
| char *name; |
| |
| 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); |
| |
| 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 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; |
| 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.header_tail = &opt.header_list; |
| opt.regflags = REG_NEWLINE; |
| opt.max_depth = -1; |
| |
| strcpy(opt.color_match, GIT_COLOR_RED GIT_COLOR_BOLD); |
| 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); |
| |
| /* |
| * 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) |
| 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 (!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; |
| } |