#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__
#endif
#endif
-static int builtin_grep;
+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;
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;
unsigned long size;
char *data;
enum object_type type;
- char *to_free = NULL;
int hit;
+ struct strbuf pathbuf = STRBUF_INIT;
data = read_sha1_file(sha1, &type, &size);
if (!data) {
return 0;
}
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(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);
- free(to_free);
return hit;
}
int i;
char *data;
size_t sz;
+ struct strbuf buf = STRBUF_INIT;
if (lstat(filename, &st) < 0) {
err_ret:
}
close(i);
if (opt->relative && opt->prefix_length)
- filename += 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;
}
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) {
push_arg("-h");
if (opt->regflags & REG_EXTENDED)
push_arg("-E");
- if (opt->regflags & REG_ICASE)
+ if (opt->ignore_case)
push_arg("-i");
if (opt->binary == GREP_BINARY_NOMATCH)
push_arg("-I");
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;
int kept;
if (!S_ISREG(ce->ce_mode))
continue;
- if (!pathspec_matches(paths, ce->name))
+ if (!pathspec_matches(paths, ce->name, opt->max_depth))
continue;
name = ce->name;
if (name[0] == '-') {
}
#endif
-static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
+static int grep_cache(struct grep_opt *opt, const char **paths, int cached,
+ int external_grep_allowed)
{
int hit = 0;
int nr;
* we grep through the checked-out files. It tends to
* be a lot more optimized
*/
- if (!cached && !builtin_grep) {
+ if (!cached && external_grep_allowed) {
hit = external_grep(opt, paths, cached);
if (hit >= 0)
return hit;
+ hit = 0;
}
#endif
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
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);
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 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 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 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;
* 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.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 = 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) {
if (!cached)
setup_work_tree();
- return !grep_cache(&opt, paths, cached);
+ return !grep_cache(&opt, paths, cached, external_grep_allowed);
}
if (cached)