Yves Martin wrote on Sat, Jan 02, 2016 at 12:29:54 +0100: > Hello, > > I am reading section "Packing revision properties (format 6+)" of file > https://svn.apache.org/repos/asf/subversion/trunk/subversion/libsvn_fs_fs/structure > > but I do not find explanation about the two first bytes of a packed > revprops corresponds to. They are visible just before the > "header" (first revision, number of revision, and each prop set sizes) >
As that file says: We always apply data compression to the pack file - using the SVN_DELTA_COMPRESSION_LEVEL_NONE level if compression is disabled. (Note that compression at SVN_DELTA_COMPRESSION_LEVEL_NONE is not a no-op stream transformation although most of the data will remain human readable.) I assume those two bytes are the compression artifact, i.e., they won't be visible if you read the file through svn_stream_compressed(). See libsvn_subr/compress.c:zlib_encode(). Cheers, Daniel > Thank you in advance for your help > Regards > Yves > > >
