Code

Merge branch 'mg/test-installed'
[git.git] / builtin-grep.c
index ef299108f529fa5fa931d765828f04535c3a6351..89489ddcf8edb85160036b0336ab4ce80c3cb6bc 100644 (file)
 #endif
 #endif
 
+static int builtin_grep;
+
+static int grep_config(const char *var, const char *value, void *cb)
+{
+       struct grep_opt *opt = cb;
+
+       if (!strcmp(var, "grep.color") || !strcmp(var, "color.grep")) {
+               opt->color = git_config_colorbool(var, value, -1);
+               return 0;
+       }
+       if (!strcmp(var, "grep.color.external") ||
+           !strcmp(var, "color.grep.external")) {
+               return git_config_string(&(opt->color_external), var, value);
+       }
+       if (!strcmp(var, "grep.color.match") ||
+           !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);
+}
+
 /*
  * git grep pathspecs are somewhat different from diff-tree pathspecs;
  * pathname wildcards are allowed.
@@ -267,6 +291,21 @@ static int flush_grep(struct grep_opt *opt,
        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;
@@ -289,12 +328,17 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached)
                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) {
@@ -332,6 +376,23 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached)
                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);
+       }
 
        hit = 0;
        argc = nr;
@@ -386,7 +447,7 @@ static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
         * we grep through the checked-out files. It tends to
         * be a lot more optimized
         */
-       if (!cached) {
+       if (!cached && !builtin_grep) {
                hit = external_grep(opt, paths, cached);
                if (hit >= 0)
                        return hit;
@@ -399,7 +460,12 @@ static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
                        continue;
                if (!pathspec_matches(paths, ce->name))
                        continue;
-               if (cached) {
+               /*
+                * 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);
@@ -427,33 +493,35 @@ static int grep_tree(struct grep_opt *opt, const char **paths,
        struct name_entry entry;
        char *down;
        int tn_len = strlen(tree_name);
-       char *path_buf = xmalloc(PATH_MAX + tn_len + 100);
+       struct strbuf pathbuf;
+
+       strbuf_init(&pathbuf, PATH_MAX + tn_len);
 
        if (tn_len) {
-               tn_len = sprintf(path_buf, "%s:", tree_name);
-               down = path_buf + tn_len;
-               strcat(down, base);
-       }
-       else {
-               down = path_buf;
-               strcpy(down, base);
+               strbuf_add(&pathbuf, tree_name, tn_len);
+               strbuf_addch(&pathbuf, ':');
+               tn_len = pathbuf.len;
        }
-       len = strlen(path_buf);
+       strbuf_addstr(&pathbuf, base);
+       len = pathbuf.len;
 
        while (tree_entry(tree, &entry)) {
-               strcpy(path_buf + len, entry.path);
+               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.
                         */
-                       strcpy(path_buf + len + tree_entry_len(entry.path, entry.sha1), "/");
+                       strbuf_addch(&pathbuf, '/');
 
+               down = pathbuf.buf + tn_len;
                if (!pathspec_matches(paths, down))
                        ;
                else if (S_ISREG(entry.mode))
-                       hit |= grep_sha1(opt, entry.sha1, path_buf, tn_len);
+                       hit |= grep_sha1(opt, entry.sha1, pathbuf.buf, tn_len);
                else if (S_ISDIR(entry.mode)) {
                        enum object_type type;
                        struct tree_desc sub;
@@ -469,6 +537,7 @@ static int grep_tree(struct grep_opt *opt, const char **paths,
                        free(data);
                }
        }
+       strbuf_release(&pathbuf);
        return hit;
 }
 
@@ -495,7 +564,7 @@ static int grep_object(struct grep_opt *opt, const char **paths,
 }
 
 static const char builtin_grep_usage[] =
-"git-grep <option>* <rev>* [-e] <pattern> [<path>...]";
+"git grep <option>* [-e] <pattern> <rev>* [[--] <path>...]";
 
 static const char emsg_invalid_context_len[] =
 "%s: invalid context length argument";
@@ -521,6 +590,12 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        opt.pattern_tail = &opt.pattern_list;
        opt.regflags = REG_NEWLINE;
 
+       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
@@ -539,6 +614,10 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                        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;
@@ -596,6 +675,11 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                        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;
@@ -708,6 +792,14 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                        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--;
@@ -733,6 +825,8 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                }
        }
 
+       if (opt.color && !opt.color_external)
+               builtin_grep = 1;
        if (!opt.pattern_list)
                die("no pattern given.");
        if ((opt.regflags != REG_NEWLINE) && opt.fixed)
@@ -771,7 +865,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                        /* 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 '..'");
+                                       die("git grep: cannot generate relative filenames containing '..'");
                }
        }
        else if (prefix) {
@@ -780,8 +874,11 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                paths[1] = NULL;
        }
 
-       if (!list.nr)
+       if (!list.nr) {
+               if (!cached)
+                       setup_work_tree();
                return !grep_cache(&opt, paths, cached);
+       }
 
        if (cached)
                die("both --cached and trees are given.");