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rhdndat findsrhdndat.ver files to check for romhacking.net updates

A version file is namedrhdndat.ver and has a version number line followed by a romhacking.net url line, repeated. These correspond to each hack or translation. To check for needed updates to version file, if any patch version in the file does not match the version on the romhacking.net patch page, it presents a warning.

rhdndat-rn renames files and patches to new .DAT[1][2] rom names if it can find the rom checksum in those .DAT files and memorizes the checksum of the 'original rom' as a extended attributeuser.rhdndat.rom_sha1 to speed up renaming in subsequent executions (in unix, not windows).

To find the checksum of the original file for hardpatched roms, rhdndat-rn can support a custom convention for 'revert patches'. Revert patches are a patch that you apply to a hardpatched file to get the original. These have the same name as the file and extension '.rxdelta' and are done with xdelta3. I keep them for patch updates for cd images (since delta chd support is rare).

rhdndat-rn will read a xml dat file or every dat file from a directory given, and ask for renaming for every match where the rom filename is not equal to the dat name proposed. It will skip the question if all the names proposed already exist in the rom directory, and not allow a rename to a existing file in the rom directory.

Besides bare rom files, files affected by renames are compressed wii/gamecube .rvz files, .cue/.toc/.gdi (treated especially to not ask for every track), the softpatch types .ips, .bps, .ups, including the new retroarch multiple softpatch convention (a number after the softpatch extension), .rxdelta, .pal NES color palettes, and sbi subchannel data files.

nes fds lnx a78 roms require headers and are hardcoded to ignore headers when calculatinguser.rhdndat.rom_sha1 to match the no-intro dat checksums that checksum everything except the header. This is problematic for hacks, where you can 'verify' a file is the right rom, but the hack was created for a rom with another header. A solution that keeps the softpatch is tracking down the right rom, hardpatching it, and creating a softpatch from the current no-intro rom to the older patched rom. For sfc and pce ips hacks that target a headered rom I recommend ipsbehead to change the patch to target the no-header rom.

Requires xdelta3 (to process rxdelta) and dolphin-tool (to operate on rvz files) on path or the same directory.

To check for updates if you have the version files:

rhdndat romdir

check if there are any updates

To rename files if you have the dat files:

rhdndat-rn [--force] [--ext a78 --ext nes ...] romdir xmlpath

the rom extensions should be all file extensions on the files you want to rename (see below for default)

rhdndat [OPTIONS] ROMDIR

ROMDIR:	Directory to search for versions to check. [required]

--show	Show link to each checked directory.
--install-completion
	Install completion for the current shell.
--show-completion
	Show completion for the current shell, to copy it orcustomize the installation.
--help	Show this message and exit.

rhdndat-rn [OPTIONS] ROMDIR XMLPATH

ROMDIR:	Directory to search for roms to rename. [required]
XMLPATH:	Xml dat file or directory to search for xml dat files to use as source of new names. [required]

--skipDIRECTORY
	Directory to skip, can be repeated.
--extTEXT	ROM extensions to find names of, can berepeated. Note that you can ommit thisargument to get the predefined list.[default: a78, hdi, fdi, ngc, ws, wsc, pce,gb, gba, gbc, n64, v64, z64, 3ds, nds, nes,lnx, fds, sfc, smc, bs, nsp, 32x, gg, sms,md, iso, dim, adf, ipf, dsi, wad, cue, gdi,toc, rvz]
--force	Force a recalculation and store of checksum(on windows the calculation always happens).
--no-rename	Check and store checksums only.
--verbose	Print more information about skipped roms.
--install-completion
	Install completion for the current shell.
--show-completion
	Show completion for the current shell, to copy it orcustomize the installation.
--help	Show this message and exit.

rhdndat requires python 3.8 or later.

rhdndat may fail to execute in linux if the dir~/.local/bin to is not in the$PATH.

In windows, you'll want to check the option to “Add Python to PATH” when installing python.

The project can be installed with pip but you'll have to provide your own xdelta3 and dolphin-tool executables in the path (or current dir) for supporting rvz and rxdelta.

In linux just installing xdelta3 from the repositories is enough, in windows, placing a executable for xdelta3 namedxdelta3.exe in the python installScripts directory if you installed with the path option selected is enough.

In linux you'll have to build dolphin-tool (it's not built by dolphin-emu packages) and place it in~/.local/bin, and in windows you can copy it from the dolphin install directory, rename it todolphin-tool.exe and place it in the python installScripts directory.

The source for this project is available here.