diff options
Diffstat (limited to 'builtin-grep.c')
| -rw-r--r-- | builtin-grep.c | 900 |
1 files changed, 0 insertions, 900 deletions
diff --git a/builtin-grep.c b/builtin-grep.c deleted file mode 100644 index c7d74fb..0000000 --- a/builtin-grep.c +++ /dev/null @@ -1,900 +0,0 @@ -/* - * 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_EXTERNAL_GREP -#ifdef __unix__ -#define NO_EXTERNAL_GREP 0 -#else -#define NO_EXTERNAL_GREP 1 -#endif -#endif - -static char const * const grep_usage[] = { - "git grep [options] [-e] <pattern> [<rev>...] [[--] path...]", - NULL -}; - -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); - 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 int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name, int tree_name_len) -{ - unsigned long size; - char *data; - enum object_type type; - int hit; - struct strbuf pathbuf = STRBUF_INIT; - - data = read_sha1_file(sha1, &type, &size); - if (!data) { - error("'%s': unable to read %s", name, sha1_to_hex(sha1)); - return 0; - } - if (opt->relative && opt->prefix_length) { - quote_path_relative(name + tree_name_len, -1, &pathbuf, opt->prefix); - strbuf_insert(&pathbuf, 0, name, tree_name_len); - name = pathbuf.buf; - } - hit = grep_buffer(opt, name, data, size); - strbuf_release(&pathbuf); - free(data); - return hit; -} - -static int grep_file(struct grep_opt *opt, const char *filename) -{ - struct stat st; - int i; - char *data; - size_t sz; - struct strbuf buf = STRBUF_INIT; - - 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; - if (opt->relative && opt->prefix_length) - filename = quote_path_relative(filename, -1, &buf, opt->prefix); - i = grep_buffer(opt, filename, data, sz); - strbuf_release(&buf); - 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; - } - - if (opt->pre_context || opt->post_context) { - /* - * grep handles hunk marks between files, but we need to - * do that ourselves between multiple calls. - */ - if (opt->show_hunk_mark) - write_or_die(1, "--\n", 3); - else - opt->show_hunk_mark = 1; - } - - 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; -} - -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) -{ - 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->ignore_case) - 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; - - 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); - } else { - unsetenv("GREP_COLOR"); - unsetenv("GREP_COLORS"); - } - unsetenv("GREP_OPTIONS"); - - 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, opt->max_depth)) - 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; - } - return hit; -} -#endif - -static int grep_cache(struct grep_opt *opt, const char **paths, int cached, - int external_grep_allowed) -{ - int hit = 0; - 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 && external_grep_allowed) { - hit = external_grep(opt, paths, cached); - if (hit >= 0) - return hit; - hit = 0; - } -#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, 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 (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 */ - } - } - 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 = 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); - } - } - 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 external_grep_allowed = 1; - int seen_dashdash = 0; - 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(0, "all-match", &opt.all_match, - "show only matches from files that match all patterns"), - OPT_GROUP(""), -#if NO_EXTERNAL_GREP - OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed, - "allow calling of grep(1) (ignored by this build)"), -#else - OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed, - "allow calling of grep(1) (default)"), -#endif - { 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; - 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); - - /* 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) || opt.funcname) - external_grep_allowed = 0; - 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"); - 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) { - if (!cached) - setup_work_tree(); - return !grep_cache(&opt, paths, cached, external_grep_allowed); - } - - 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; - } - free_grep_patterns(&opt); - return !hit; -} |