Document file-glob for "git checkout -- '*.c'"

[git.git] / sha1_file.c

diff --git a/sha1_file.c b/sha1_file.c
index f9f8d5e91c278000e5869f49ba6a79ddfaf13145..f615fc72064ef17f989ebdb5bb6a3ac2256d872c 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -228,7 +228,6 @@ char *sha1_pack_index_name(const unsigned char *sha1)
 struct alternate_object_database *alt_odb_list;
 static struct alternate_object_database **alt_odb_tail;
 
-static void read_info_alternates(const char * alternates, int depth);
 static int git_open_noatime(const char *name);
 
 /*
@@ -353,7 +352,7 @@ static void link_alt_odb_entries(const char *alt, const char *ep, int sep,
        }
 }
 
-static void read_info_alternates(const char * relative_base, int depth)
+void read_info_alternates(const char * relative_base, int depth)
 {
        char *map;
        size_t mapsz;
@@ -2700,10 +2699,13 @@ static int index_core(unsigned char *sha1, int fd, size_t size,
  * This also bypasses the usual "convert-to-git" dance, and that is on
  * purpose. We could write a streaming version of the converting
  * functions and insert that before feeding the data to fast-import
- * (or equivalent in-core API described above), but the primary
- * motivation for trying to stream from the working tree file and to
- * avoid mmaping it in core is to deal with large binary blobs, and
- * by definition they do _not_ want to get any conversion.
+ * (or equivalent in-core API described above). However, that is
+ * somewhat complicated, as we do not know the size of the filter
+ * result, which we need to know beforehand when writing a git object.
+ * Since the primary motivation for trying to stream from the working
+ * tree file and to avoid mmaping it in core is to deal with large
+ * binary blobs, they generally do not want to get any conversion, and
+ * callers should avoid this code path when filters are requested.
  */
 static int index_stream(unsigned char *sha1, int fd, size_t size,
                        enum object_type type, const char *path,
@@ -2720,7 +2722,8 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st,
 
        if (!S_ISREG(st->st_mode))
                ret = index_pipe(sha1, fd, type, path, flags);
-       else if (size <= big_file_threshold || type != OBJ_BLOB)
+       else if (size <= big_file_threshold || type != OBJ_BLOB ||
+                (path && would_convert_to_git(path, NULL, 0, 0)))
                ret = index_core(sha1, fd, size, type, path, flags);
        else
                ret = index_stream(sha1, fd, size, type, path, flags);