packfile: generalize pack directory list

In anticipation of sharing the pack directory listing with the
multi-pack-index, generalize prepare_packed_git_one() into
for_each_file_in_pack_dir().

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/packfile.c b/packfile.c
index 7cd45aa4b2a0e098d597e4dea633d9b097b9b94c..ee1ab9b804d54c09219d2f43769c9a9fc05c0484 100644 (file)
--- a/packfile.c
+++ b/packfile.c
@@ -738,13 +738,14 @@ static void report_pack_garbage(struct string_list *list)
        report_helper(list, seen_bits, first, list->nr);
 }
 
-static void prepare_packed_git_one(struct repository *r, char *objdir, int local)
+void for_each_file_in_pack_dir(const char *objdir,
+                              each_file_in_pack_dir_fn fn,
+                              void *data)
 {
        struct strbuf path = STRBUF_INIT;
        size_t dirnamelen;
        DIR *dir;
        struct dirent *de;
-       struct string_list garbage = STRING_LIST_INIT_DUP;
 
        strbuf_addstr(&path, objdir);
        strbuf_addstr(&path, "/pack");
@@ -759,53 +760,77 @@ static void prepare_packed_git_one(struct repository *r, char *objdir, int local
        strbuf_addch(&path, '/');
        dirnamelen = path.len;
        while ((de = readdir(dir)) != NULL) {
-               struct packed_git *p;
-               size_t base_len;
-
                if (is_dot_or_dotdot(de->d_name))
                        continue;
 
                strbuf_setlen(&path, dirnamelen);
                strbuf_addstr(&path, de->d_name);
 
-               base_len = path.len;
-               if (strip_suffix_mem(path.buf, &base_len, ".idx")) {
-                       /* Don't reopen a pack we already have. */
-                       for (p = r->objects->packed_git; p;
-                            p = p->next) {
-                               size_t len;
-                               if (strip_suffix(p->pack_name, ".pack", &len) &&
-                                   len == base_len &&
-                                   !memcmp(p->pack_name, path.buf, len))
-                                       break;
-                       }
-                       if (p == NULL &&
-                           /*
-                            * See if it really is a valid .idx file with
-                            * corresponding .pack file that we can map.
-                            */
-                           (p = add_packed_git(path.buf, path.len, local)) != NULL)
-                               install_packed_git(r, p);
-               }
-
-               if (!report_garbage)
-                       continue;
-
-               if (ends_with(de->d_name, ".idx") ||
-                   ends_with(de->d_name, ".pack") ||
-                   ends_with(de->d_name, ".bitmap") ||
-                   ends_with(de->d_name, ".keep") ||
-                   ends_with(de->d_name, ".promisor"))
-                       string_list_append(&garbage, path.buf);
-               else
-                       report_garbage(PACKDIR_FILE_GARBAGE, path.buf);
+               fn(path.buf, path.len, de->d_name, data);
        }
+
        closedir(dir);
-       report_pack_garbage(&garbage);
-       string_list_clear(&garbage, 0);
        strbuf_release(&path);
 }
 
+struct prepare_pack_data {
+       struct repository *r;
+       struct string_list *garbage;
+       int local;
+};
+
+static void prepare_pack(const char *full_name, size_t full_name_len,
+                        const char *file_name, void *_data)
+{
+       struct prepare_pack_data *data = (struct prepare_pack_data *)_data;
+       struct packed_git *p;
+       size_t base_len = full_name_len;
+
+       if (strip_suffix_mem(full_name, &base_len, ".idx")) {
+               /* Don't reopen a pack we already have. */
+               for (p = data->r->objects->packed_git; p; p = p->next) {
+                       size_t len;
+                       if (strip_suffix(p->pack_name, ".pack", &len) &&
+                           len == base_len &&
+                           !memcmp(p->pack_name, full_name, len))
+                               break;
+               }
+
+               if (!p) {
+                       p = add_packed_git(full_name, full_name_len, data->local);
+                       if (p)
+                               install_packed_git(data->r, p);
+               }
+       }
+
+       if (!report_garbage)
+               return;
+
+       if (ends_with(file_name, ".idx") ||
+           ends_with(file_name, ".pack") ||
+           ends_with(file_name, ".bitmap") ||
+           ends_with(file_name, ".keep") ||
+           ends_with(file_name, ".promisor"))
+               string_list_append(data->garbage, full_name);
+       else
+               report_garbage(PACKDIR_FILE_GARBAGE, full_name);
+}
+
+static void prepare_packed_git_one(struct repository *r, char *objdir, int local)
+{
+       struct prepare_pack_data data;
+       struct string_list garbage = STRING_LIST_INIT_DUP;
+
+       data.r = r;
+       data.garbage = &garbage;
+       data.local = local;
+
+       for_each_file_in_pack_dir(objdir, prepare_pack, &data);
+
+       report_pack_garbage(data.garbage);
+       string_list_clear(data.garbage, 0);
+}
+
 static void prepare_packed_git(struct repository *r);
 /*
  * Give a fast, rough count of the number of objects in the repository. This

diff --git a/packfile.h b/packfile.h
index e0a38aba9321deae1d64aea7cd87067fde240b10..d2ad30300a2740ef65ae53fda116fa832f9a31e0 100644 (file)
--- a/packfile.h
+++ b/packfile.h
@@ -28,6 +28,12 @@ extern char *sha1_pack_index_name(const unsigned char *sha1);
 
 extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
 
+typedef void each_file_in_pack_dir_fn(const char *full_path, size_t full_path_len,
+                                     const char *file_pach, void *data);
+void for_each_file_in_pack_dir(const char *objdir,
+                              each_file_in_pack_dir_fn fn,
+                              void *data);
+
 /* A hook to report invalid files in pack directory */
 #define PACKDIR_FILE_PACK 1
 #define PACKDIR_FILE_IDX 2