Finally implement "git log --follow"

diff --git a/builtin-fsck.c b/builtin-fsck.c
index 7c3b0a535f81a350d11df112a6a5b5a49b139afb..944a496650b6e13d2684bb221ee8bc7aadd78d6f 100644 (file)
--- a/builtin-fsck.c
+++ b/builtin-fsck.c
@@ -14,11 +14,13 @@
 static int show_root;
 static int show_tags;
 static int show_unreachable;
+static int include_reflogs = 1;
 static int check_full;
 static int check_strict;
 static int keep_cache_objects;
 static unsigned char head_sha1[20];
 static int errors_found;
+static int verbose;
 #define ERROR_OBJECT 01
 #define ERROR_REACHABLE 02
 
@@ -148,6 +150,9 @@ static void check_unreachable_object(struct object *obj)
 
 static void check_object(struct object *obj)
 {
+       if (verbose)
+               fprintf(stderr, "Checking %s\n", sha1_to_hex(obj->sha1));
+
        if (obj->flags & REACHABLE)
                check_reachable_object(obj);
        else
@@ -160,6 +165,9 @@ static void check_connectivity(void)
 
        /* Look up all the requirements, warn about missing objects.. */
        max = get_max_object_index();
+       if (verbose)
+               fprintf(stderr, "Checking connectivity (%d objects)\n", max);
+
        for (i = 0; i < max; i++) {
                struct object *obj = get_indexed_object(i);
 
@@ -218,6 +226,7 @@ static int fsck_tree(struct tree *item)
 {
        int retval;
        int has_full_path = 0;
+       int has_empty_name = 0;
        int has_zero_pad = 0;
        int has_bad_modes = 0;
        int has_dup_entries = 0;
@@ -227,6 +236,10 @@ static int fsck_tree(struct tree *item)
        const char *o_name;
        const unsigned char *o_sha1;
 
+       if (verbose)
+               fprintf(stderr, "Checking tree %s\n",
+                               sha1_to_hex(item->object.sha1));
+
        init_tree_desc(&desc, item->buffer, item->size);
 
        o_mode = 0;
@@ -241,6 +254,8 @@ static int fsck_tree(struct tree *item)
 
                if (strchr(name, '/'))
                        has_full_path = 1;
+               if (!*name)
+                       has_empty_name = 1;
                has_zero_pad |= *(char *)desc.buffer == '0';
                update_tree_entry(&desc);
 
@@ -252,6 +267,7 @@ static int fsck_tree(struct tree *item)
                case S_IFREG | 0644:
                case S_IFLNK:
                case S_IFDIR:
+               case S_IFGITLINK:
                        break;
                /*
                 * This is nonstandard, but we had a few of these
@@ -289,6 +305,9 @@ static int fsck_tree(struct tree *item)
        if (has_full_path) {
                objwarning(&item->object, "contains full pathnames");
        }
+       if (has_empty_name) {
+               objwarning(&item->object, "contains empty pathname");
+       }
        if (has_zero_pad) {
                objwarning(&item->object, "contains zero-padded file modes");
        }
@@ -309,6 +328,10 @@ static int fsck_commit(struct commit *commit)
        char *buffer = commit->buffer;
        unsigned char tree_sha1[20], sha1[20];
 
+       if (verbose)
+               fprintf(stderr, "Checking commit %s\n",
+                       sha1_to_hex(commit->object.sha1));
+
        if (memcmp(buffer, "tree ", 5))
                return objerror(&commit->object, "invalid format - expected 'tree' line");
        if (get_sha1_hex(buffer+5, tree_sha1) || buffer[45] != '\n')
@@ -328,7 +351,7 @@ static int fsck_commit(struct commit *commit)
        if (!commit->parents && show_root)
                printf("root %s\n", sha1_to_hex(commit->object.sha1));
        if (!commit->date)
-               printf("bad commit date in %s\n", 
+               printf("bad commit date in %s\n",
                       sha1_to_hex(commit->object.sha1));
        return 0;
 }
@@ -337,6 +360,10 @@ static int fsck_tag(struct tag *tag)
 {
        struct object *tagged = tag->tagged;
 
+       if (verbose)
+               fprintf(stderr, "Checking tag %s\n",
+                       sha1_to_hex(tag->object.sha1));
+
        if (!tagged) {
                return objerror(&tag->object, "could not load tagged object");
        }
@@ -348,7 +375,7 @@ static int fsck_tag(struct tag *tag)
        return 0;
 }
 
-static int fsck_sha1(unsigned char *sha1)
+static int fsck_sha1(const unsigned char *sha1)
 {
        struct object *obj = parse_object(sha1);
        if (!obj) {
@@ -438,6 +465,9 @@ static void fsck_dir(int i, char *path)
        if (!dir)
                return;
 
+       if (verbose)
+               fprintf(stderr, "Checking directory %s\n", path);
+
        while ((de = readdir(dir)) != NULL) {
                char name[100];
                unsigned char sha1[20];
@@ -472,6 +502,10 @@ static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
 {
        struct object *obj;
 
+       if (verbose)
+               fprintf(stderr, "Checking reflog %s->%s\n",
+                       sha1_to_hex(osha1), sha1_to_hex(nsha1));
+
        if (!is_null_sha1(osha1)) {
                obj = lookup_object(osha1);
                if (obj) {
@@ -517,7 +551,8 @@ static int fsck_handle_ref(const char *refname, const unsigned char *sha1, int f
 static void get_default_heads(void)
 {
        for_each_ref(fsck_handle_ref, NULL);
-       for_each_reflog(fsck_handle_reflog, NULL);
+       if (include_reflogs)
+               for_each_reflog(fsck_handle_reflog, NULL);
 
        /*
         * Not having any default heads isn't really fatal, but
@@ -540,6 +575,10 @@ static void get_default_heads(void)
 static void fsck_object_dir(const char *path)
 {
        int i;
+
+       if (verbose)
+               fprintf(stderr, "Checking object directory\n");
+
        for (i = 0; i < 256; i++) {
                static char dir[4096];
                sprintf(dir, "%s/%02x", path, i);
@@ -555,6 +594,9 @@ static int fsck_head_link(void)
        int null_is_error = 0;
        const char *head_points_at = resolve_ref("HEAD", sha1, 0, &flag);
 
+       if (verbose)
+               fprintf(stderr, "Checking HEAD link\n");
+
        if (!head_points_at)
                return error("Invalid HEAD");
        if (!strcmp(head_points_at, "HEAD"))
@@ -577,6 +619,9 @@ static int fsck_cache_tree(struct cache_tree *it)
        int i;
        int err = 0;
 
+       if (verbose)
+               fprintf(stderr, "Checking cache tree\n");
+
        if (0 <= it->entry_count) {
                struct object *obj = parse_object(it->sha1);
                if (!obj) {
@@ -596,7 +641,7 @@ static int fsck_cache_tree(struct cache_tree *it)
 
 static const char fsck_usage[] =
 "git-fsck [--tags] [--root] [[--unreachable] [--cache] [--full] "
-"[--strict] <head-sha1>*]";
+"[--strict] [--verbose] <head-sha1>*]";
 
 int cmd_fsck(int argc, char **argv, const char *prefix)
 {
@@ -624,6 +669,10 @@ int cmd_fsck(int argc, char **argv, const char *prefix)
                        keep_cache_objects = 1;
                        continue;
                }
+               if (!strcmp(arg, "--no-reflogs")) {
+                       include_reflogs = 0;
+                       continue;
+               }
                if (!strcmp(arg, "--full")) {
                        check_full = 1;
                        continue;
@@ -632,6 +681,10 @@ int cmd_fsck(int argc, char **argv, const char *prefix)
                        check_strict = 1;
                        continue;
                }
+               if (!strcmp(arg, "--verbose")) {
+                       verbose = 1;
+                       continue;
+               }
                if (*arg == '-')
                        usage(fsck_usage);
        }
@@ -655,18 +708,18 @@ int cmd_fsck(int argc, char **argv, const char *prefix)
                        verify_pack(p, 0);
 
                for (p = packed_git; p; p = p->next) {
-                       uint32_t i, num = num_packed_objects(p);
-                       for (i = 0; i < num; i++) {
-                               unsigned char sha1[20];
-                               nth_packed_object_sha1(p, i, sha1);
-                               fsck_sha1(sha1);
-                       }
+                       uint32_t i, num;
+                       if (open_pack_index(p))
+                               continue;
+                       num = p->num_objects;
+                       for (i = 0; i < num; i++)
+                               fsck_sha1(nth_packed_object_sha1(p, i));
                }
        }
 
        heads = 0;
        for (i = 1; i < argc; i++) {
-               const char *arg = argv[i]; 
+               const char *arg = argv[i];
 
                if (*arg == '-')
                        continue;
@@ -700,8 +753,14 @@ int cmd_fsck(int argc, char **argv, const char *prefix)
                int i;
                read_cache();
                for (i = 0; i < active_nr; i++) {
-                       struct blob *blob = lookup_blob(active_cache[i]->sha1);
+                       unsigned int mode;
+                       struct blob *blob;
                        struct object *obj;
+
+                       mode = ntohl(active_cache[i]->ce_mode);
+                       if (S_ISGITLINK(mode))
+                               continue;
+                       blob = lookup_blob(active_cache[i]->sha1);
                        if (!blob)
                                continue;
                        obj = &blob->object;