diff options
Diffstat (limited to 'src/pack.c')
| -rw-r--r-- | src/pack.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/pack.c b/src/pack.c index 6cb46d37b..d7d39392f 100644 --- a/src/pack.c +++ b/src/pack.c @@ -277,6 +277,56 @@ int git_packfile_unpack_header( return 0; } +int git_packfile_resolve_header( + size_t *size_p, + git_otype *type_p, + struct git_pack_file *p, + git_off_t offset) +{ + git_mwindow *w_curs = NULL; + git_off_t curpos = offset; + size_t size; + git_otype type; + git_off_t base_offset; + int error; + + error = git_packfile_unpack_header(&size, &type, &p->mwf, &w_curs, &curpos); + git_mwindow_close(&w_curs); + if (error < 0) + return error; + + if (type == GIT_OBJ_OFS_DELTA || type == GIT_OBJ_REF_DELTA) { + size_t base_size; + git_rawobj delta; + base_offset = get_delta_base(p, &w_curs, &curpos, type, offset); + git_mwindow_close(&w_curs); + error = packfile_unpack_compressed(&delta, p, &w_curs, &curpos, size, type); + git_mwindow_close(&w_curs); + if (error < 0) + return error; + error = git__delta_read_header(delta.data, delta.len, &base_size, size_p); + git__free(delta.data); + if (error < 0) + return error; + } else + *size_p = size; + + while (type == GIT_OBJ_OFS_DELTA || type == GIT_OBJ_REF_DELTA) { + curpos = base_offset; + error = git_packfile_unpack_header(&size, &type, &p->mwf, &w_curs, &curpos); + git_mwindow_close(&w_curs); + if (error < 0) + return error; + if (type != GIT_OBJ_OFS_DELTA && type != GIT_OBJ_REF_DELTA) + break; + base_offset = get_delta_base(p, &w_curs, &curpos, type, base_offset); + git_mwindow_close(&w_curs); + } + *type_p = type; + + return error; +} + static int packfile_unpack_delta( git_rawobj *obj, struct git_pack_file *p, |