sha1_file: add for_each iterators for loose and packed objects

diff --git a/cache.h b/cache.h
index db4ccd1cf7575dfc31b6c7e6720f31529d9edc02..51ee856acccb90b0652072fcf721b7b99b069f1c 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -482,7 +482,7 @@ extern int daemonize(void);
                                alloc = (nr); \
                        else \
                                alloc = alloc_nr(alloc); \
-                       x = xrealloc((x), alloc * sizeof(*(x))); \
+                       REALLOC_ARRAY(x, alloc); \
                } \
        } while (0)
 
@@ -1143,7 +1143,7 @@ extern void prepare_alt_odb(void);
 extern void read_info_alternates(const char * relative_base, int depth);
 extern void add_to_alternates_file(const char *reference);
 typedef int alt_odb_fn(struct alternate_object_database *, void *);
-extern void foreach_alt_odb(alt_odb_fn, void*);
+extern int foreach_alt_odb(alt_odb_fn, void*);
 
 struct pack_window {
        struct pack_window *next;
@@ -1239,6 +1239,50 @@ extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsig
 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
 extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
 
+/*
+ * Iterate over the files in the loose-object parts of the object
+ * directory "path", triggering the following callbacks:
+ *
+ *  - loose_object is called for each loose object we find.
+ *
+ *  - loose_cruft is called for any files that do not appear to be
+ *    loose objects. Note that we only look in the loose object
+ *    directories "objects/[0-9a-f]{2}/", so we will not report
+ *    "objects/foobar" as cruft.
+ *
+ *  - loose_subdir is called for each top-level hashed subdirectory
+ *    of the object directory (e.g., "$OBJDIR/f0"). It is called
+ *    after the objects in the directory are processed.
+ *
+ * Any callback that is NULL will be ignored. Callbacks returning non-zero
+ * will end the iteration.
+ */
+typedef int each_loose_object_fn(const unsigned char *sha1,
+                                const char *path,
+                                void *data);
+typedef int each_loose_cruft_fn(const char *basename,
+                               const char *path,
+                               void *data);
+typedef int each_loose_subdir_fn(int nr,
+                                const char *path,
+                                void *data);
+int for_each_loose_file_in_objdir(const char *path,
+                                 each_loose_object_fn obj_cb,
+                                 each_loose_cruft_fn cruft_cb,
+                                 each_loose_subdir_fn subdir_cb,
+                                 void *data);
+
+/*
+ * Iterate over loose and packed objects in both the local
+ * repository and any alternates repositories.
+ */
+typedef int each_packed_object_fn(const unsigned char *sha1,
+                                 struct packed_git *pack,
+                                 uint32_t pos,
+                                 void *data);
+extern int for_each_loose_object(each_loose_object_fn, void *);
+extern int for_each_packed_object(each_packed_object_fn, void *);
+
 struct object_info {
        /* Request */
        enum object_type *typep;
@@ -1285,6 +1329,8 @@ extern int update_server_info(int);
 #define CONFIG_INVALID_PATTERN 6
 #define CONFIG_GENERIC_ERROR 7
 
+#define CONFIG_REGEX_NONE ((void *)1)
+
 struct git_config_source {
        unsigned int use_stdin:1;
        const char *file;
@@ -1322,6 +1368,7 @@ extern int git_config_rename_section_in_file(const char *, const char *, const c
 extern const char *git_etc_gitconfig(void);
 extern int check_repository_format_version(const char *var, const char *value, void *cb);
 extern int git_env_bool(const char *, int);
+extern unsigned long git_env_ulong(const char *, unsigned long);
 extern int git_config_system(void);
 extern int config_error_nonbool(const char *);
 #if defined(__GNUC__)
@@ -1428,6 +1475,8 @@ extern const char *git_mailmap_blob;
 
 /* IO helper functions */
 extern void maybe_flush_or_die(FILE *, const char *);
+__attribute__((format (printf, 2, 3)))
+extern void fprintf_or_die(FILE *, const char *fmt, ...);
 extern int copy_fd(int ifd, int ofd);
 extern int copy_file(const char *dst, const char *src, int mode);
 extern int copy_file_with_time(const char *dst, const char *src, int mode);