Merge branch 'jk/maint-strbuf-missing-init' into maint
[gitweb.git] / builtin / grep.c
index 871afaa3c76ea34b67671a6e4a46957a08a946e5..988ea1d3324d6e32fcfd3b97da0fad5ae41b592c 100644 (file)
@@ -74,13 +74,32 @@ static int all_work_added;
 /* This lock protects all the variables above. */
 static pthread_mutex_t grep_mutex;
 
+static inline void grep_lock(void)
+{
+       if (use_threads)
+               pthread_mutex_lock(&grep_mutex);
+}
+
+static inline void grep_unlock(void)
+{
+       if (use_threads)
+               pthread_mutex_unlock(&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)
+static inline void read_sha1_lock(void)
+{
+       if (use_threads)
+               pthread_mutex_lock(&read_sha1_mutex);
+}
+
+static inline void read_sha1_unlock(void)
+{
+       if (use_threads)
+               pthread_mutex_unlock(&read_sha1_mutex);
+}
 
 /* Signalled when a new work_item is added to todo. */
 static pthread_cond_t cond_add;
@@ -93,8 +112,7 @@ static pthread_cond_t cond_write;
 /* Signalled when we are finished with everything. */
 static pthread_cond_t cond_result;
 
-static int print_hunk_marks_between_files;
-static int printed_something;
+static int skip_first_line;
 
 static void add_work(enum work_type type, char *name, void *id)
 {
@@ -160,10 +178,20 @@ static void work_done(struct work_item *w)
            todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
                w = &todo[todo_done];
                if (w->out.len) {
-                       if (print_hunk_marks_between_files && printed_something)
-                               write_or_die(1, "--\n", 3);
-                       write_or_die(1, w->out.buf, w->out.len);
-                       printed_something = 1;
+                       const char *p = w->out.buf;
+                       size_t len = w->out.len;
+
+                       /* Skip the leading hunk mark of the first file. */
+                       if (skip_first_line) {
+                               while (len) {
+                                       len--;
+                                       if (*p++ == '\n')
+                                               break;
+                               }
+                               skip_first_line = 0;
+                       }
+
+                       write_or_die(1, p, len);
                }
                free(w->name);
                free(w->identifier);
@@ -316,7 +344,7 @@ static int grep_config(const char *var, const char *value, void *cb)
        }
 
        if (!strcmp(var, "color.grep"))
-               opt->color = git_config_colorbool(var, value, -1);
+               opt->color = git_config_colorbool(var, value);
        else if (!strcmp(var, "color.grep.context"))
                color = opt->color_context;
        else if (!strcmp(var, "color.grep.filename"))
@@ -345,13 +373,9 @@ static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type
 {
        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);
-       }
+       read_sha1_lock();
+       data = read_sha1_file(sha1, type, size);
+       read_sha1_unlock();
        return data;
 }
 
@@ -533,18 +557,19 @@ static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int
 static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
                     struct tree_desc *tree, struct strbuf *base, int tn_len)
 {
-       int hit = 0, match = 0;
+       int hit = 0;
+       enum interesting match = entry_not_interesting;
        struct name_entry entry;
        int old_baselen = base->len;
 
        while (tree_entry(tree, &entry)) {
-               int te_len = tree_entry_len(entry.path, entry.sha1);
+               int te_len = tree_entry_len(&entry);
 
-               if (match != 2) {
+               if (match != all_entries_interesting) {
                        match = tree_entry_interesting(&entry, base, tn_len, pathspec);
-                       if (match < 0)
+                       if (match == all_entries_not_interesting)
                                break;
-                       if (match == 0)
+                       if (match == entry_not_interesting)
                                continue;
                }
 
@@ -589,8 +614,11 @@ static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
                struct strbuf base;
                int hit, len;
 
+               read_sha1_lock();
                data = read_object_with_reference(obj->sha1, tree_type,
                                                  &size, NULL);
+               read_sha1_unlock();
+
                if (!data)
                        die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1));
 
@@ -628,13 +656,15 @@ static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
        return hit;
 }
 
-static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec)
+static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
+                         int exc_std)
 {
        struct dir_struct dir;
        int i, hit = 0;
 
        memset(&dir, 0, sizeof(dir));
-       setup_standard_excludes(&dir);
+       if (exc_std)
+               setup_standard_excludes(&dir);
 
        fill_directory(&dir, pathspec->raw);
        for (i = 0; i < dir.nr; i++) {
@@ -741,7 +771,7 @@ static int help_callback(const struct option *opt, const char *arg, int unset)
 int cmd_grep(int argc, const char **argv, const char *prefix)
 {
        int hit = 0;
-       int cached = 0;
+       int cached = 0, untracked = 0, opt_exclude = -1;
        int seen_dashdash = 0;
        int external_grep_allowed__ignored;
        const char *show_in_pager = NULL, *default_pager = "dummy";
@@ -765,8 +795,13 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        struct option options[] = {
                OPT_BOOLEAN(0, "cached", &cached,
                        "search in index instead of in the work tree"),
-               OPT_BOOLEAN(0, "index", &use_index,
-                       "--no-index finds in contents not managed by git"),
+               { OPTION_BOOLEAN, 0, "index", &use_index, NULL,
+                       "finds in contents not managed by git",
+                       PARSE_OPT_NOARG | PARSE_OPT_NEGHELP },
+               OPT_BOOLEAN(0, "untracked", &untracked,
+                       "search in both tracked and untracked files"),
+               OPT_SET_INT(0, "exclude-standard", &opt_exclude,
+                           "search also in ignored files", 1),
                OPT_GROUP(""),
                OPT_BOOLEAN('v', "invert-match", &opt.invert,
                        "show non-matching lines"),
@@ -813,18 +848,24 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                OPT_BOOLEAN('c', "count", &opt.count,
                        "show the number of matches instead of matching lines"),
                OPT__COLOR(&opt.color, "highlight matches"),
+               OPT_BOOLEAN(0, "break", &opt.file_break,
+                       "print empty line between matches from different files"),
+               OPT_BOOLEAN(0, "heading", &opt.heading,
+                       "show filename only once above matches from same file"),
                OPT_GROUP(""),
-               OPT_CALLBACK('C', NULL, &opt, "n",
+               OPT_CALLBACK('C', "context", &opt, "n",
                        "show <n> context lines before and after matches",
                        context_callback),
-               OPT_INTEGER('B', NULL, &opt.pre_context,
+               OPT_INTEGER('B', "before-context", &opt.pre_context,
                        "show <n> context lines before matches"),
-               OPT_INTEGER('A', NULL, &opt.post_context,
+               OPT_INTEGER('A', "after-context", &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_BOOLEAN('W', "function-context", &opt.funcbody,
+                       "show the surrounding function"),
                OPT_GROUP(""),
                OPT_CALLBACK('f', NULL, &opt, "file",
                        "read patterns from file", file_callback),
@@ -883,8 +924,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        strcpy(opt.color_sep, GIT_COLOR_CYAN);
        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
@@ -967,8 +1006,9 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                use_threads = 0;
 
        if (use_threads) {
-               if (opt.pre_context || opt.post_context)
-                       print_hunk_marks_between_files = 1;
+               if (opt.pre_context || opt.post_context || opt.file_break ||
+                   opt.funcbody)
+                       skip_first_line = 1;
                start_threads(&opt);
        }
 #else
@@ -1031,13 +1071,16 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        if (!show_in_pager)
                setup_pager();
 
+       if (!use_index && (untracked || cached))
+               die(_("--cached or --untracked cannot be used with --no-index."));
 
-       if (!use_index) {
-               if (cached)
-                       die(_("--cached cannot be used with --no-index."));
+       if (!use_index || untracked) {
+               int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
                if (list.nr)
-                       die(_("--no-index cannot be used with revs."));
-               hit = grep_directory(&opt, &pathspec);
+                       die(_("--no-index or --untracked cannot be used with revs."));
+               hit = grep_directory(&opt, &pathspec, use_exclude);
+       } else if (0 <= opt_exclude) {
+               die(_("--[no-]exclude-standard cannot be used for tracked contents."));
        } else if (!list.nr) {
                if (!cached)
                        setup_work_tree();