grep docs: document --no-index option

[git.git] / builtin-grep.c

diff --git a/builtin-grep.c b/builtin-grep.c
index 9bd467c9b90d1c58a59e27fbc6673cb68d855c72..26979577d3f753cdc8b3358954249708d4cb53ef 100644 (file)
--- a/builtin-grep.c
+++ b/builtin-grep.c
@@ -14,7 +14,6 @@
 #include "userdiff.h"
 #include "grep.h"
 #include "quote.h"
-#include "dir.h"
 
 #ifndef NO_PTHREADS
 #include "thread-utils.h"
@@ -205,6 +204,8 @@ static void *run(void *arg)
 
                work_done(w);
        }
+       free_grep_patterns(arg);
+       free(arg);
 
        return (void*) (intptr_t) hit;
 }
@@ -407,15 +408,25 @@ static int pathspec_matches(const char **paths, const char *name, int max_depth)
        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;
-       char *data;
-
-       read_sha1_lock();
-       data = read_sha1_file(sha1, &type, size);
-       read_sha1_unlock();
+       void *data = lock_and_read_sha1_file(sha1, &type, size);
 
        if (!data)
                error("'%s': unable to read %s", name, sha1_to_hex(sha1));
@@ -604,10 +615,7 @@ static int grep_tree(struct grep_opt *opt, const char **paths,
                        void *data;
                        unsigned long size;
 
-                       read_sha1_lock();
-                       data = read_sha1_file(entry.sha1, &type, &size);
-                       read_sha1_unlock();
-
+                       data = lock_and_read_sha1_file(entry.sha1, &type, &size);
                        if (!data)
                                die("unable to read tree (%s)",
                                    sha1_to_hex(entry.sha1));
@@ -644,24 +652,6 @@ static int grep_object(struct grep_opt *opt, const char **paths,
        die("unable to grep from object of type %s", typename(obj->type));
 }
 
-static int grep_directory(struct grep_opt *opt, const char **paths)
-{
-       struct dir_struct dir;
-       int i, hit = 0;
-
-       memset(&dir, 0, sizeof(dir));
-       setup_standard_excludes(&dir);
-
-       fill_directory(&dir, paths);
-       for (i = 0; i < dir.nr; i++) {
-               hit |= grep_file(opt, dir.entries[i]->name);
-               if (hit && opt->status_only)
-                       break;
-       }
-       free_grep_patterns(opt);
-       return hit;
-}
-
 static int context_callback(const struct option *opt, const char *arg,
                            int unset)
 {
@@ -756,12 +746,9 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        const char **paths = NULL;
        int i;
        int dummy;
-       int nongit = 0, use_index = 1;
        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"),
                OPT_GROUP(""),
                OPT_BOOLEAN('v', "invert-match", &opt.invert,
                        "show non-matching lines"),
@@ -844,8 +831,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                OPT_END()
        };
 
-       prefix = setup_git_directory_gently(&nongit);
-
        /*
         * 'git grep -h', unlike 'git grep -h <pattern>', is a request
         * to show usage information and exit.
@@ -883,9 +868,15 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                             PARSE_OPT_STOP_AT_NON_OPTION |
                             PARSE_OPT_NO_INTERNAL_HELP);
 
-       if (use_index && nongit)
-               /* die the same way as if we did it at the beginning */
-               setup_git_directory();
+       /*
+        * 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) {
@@ -948,18 +939,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                paths[1] = NULL;
        }
 
-       if (!use_index) {
-               int hit;
-               if (cached)
-                       die("--cached cannot be used with --no-index.");
-               if (list.nr)
-                       die("--no-index cannot be used with revs.");
-               hit = grep_directory(&opt, paths);
-               if (use_threads)
-                       hit |= wait_all();
-               return !hit;
-       }
-
        if (!list.nr) {
                int hit;
                if (!cached)