NAME

thdat — Touhou archive tool

SYNOPSIS

thdat [-Vg] [-C dir] [[-c | -l | -x] [d | version]] [archive [file ...]]

DESCRIPTION

The thdat utility extracts files from an archive or creates a new archive from a set of files. The following commands are available:

thdat -c version archive [-C dir] file [file ...]: Archives the specified files.
thdat -l [d | version] archive: Lists the contents of the archive.
thdat [-g] -x [d | version] archive [-C dir] [file ...]: Extracts files. If no files are specified, all files are extracted.
thdat -V: Displays the program version.

These options are accepted:

-g

The -g option enables glob matching for filenames that are to be extracted in -x mode. For example, to extract all ecl files, do the following:

thdat -gx18 th18.dat "*.ecl"

Note the use of quotes to escape globing performed by the shell.

-C dir

The -C option changes the current directory to dir after opening the archive. It should be specified between the archive name and the file list.

The version specifies which archive format to use. Running the program without a command will list the supported formats. If d is specified instead of version, thdat automatically detects the file format.

ENVIRONMENT

OMP_NUM_THREADS: The number of threads to be used for compression and decompression. The default used when OMP_NUM_THREADS is not set depends on the OpenMP implementation.

EXIT STATUS

The thdat utility exits with 0 on success, 1 on error.

EXAMPLES

Create a new archive from the input files:

thdat -c6 output.dat input.anm input.msg input.ecl

Lists the contents of the specified archive:

thdat -l128 th128.dat

Extract all files from the archive to the current working directory:

thdat -x8 th08.dat

CAVEATS

BGM archives are not supported by the thdat utility.

BUGS

The format used by TH03-TH05 uses separate encryption keys for each entry in the archives, as well as one key for the entry list. It is not known if these keys are computed from the entries, or if they are randomly assigned. They are currently set to constant values.

Original TH08 and TH09 archives contain a large amount of encrypted zero padding at the end of the entry list. This padding is reduced to four bytes.

SECURITY CONSIDERATIONS

File names may not be properly sanitized when extracting. Furthermode, invalid data may not be properly handled. Do not extract untrusted archives.