Replaces the QProcess->7z shim with the public-domain LZMA SDK (23.01) 7-Zip
reader, vendored under sources/import/edz/lzma/ (decode-only subset). New
edzsevenzip.cpp wraps SzArEx_Open/SzArEx_Extract and writes entries via Qt, so
EdzArchive no longer needs an external 7-Zip at runtime. Enables the C language
in CMake for the vendored sources.
Verified: the bundled decoder extracts all three ifm sample .edz and the
generated elements still match the Python oracle exactly (byte-correct decode),
with no 7z on the path.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
First piece of native EPLAN Data Portal (.edz) import. A .edz is a 7-Zip
archive; QET previously had no archive handling. EdzArchive unpacks one to a
temporary directory and locates the contained part.xml.
The extraction backend is isolated behind extractWithSevenZipCli() so it can be
replaced with a bundled decompressor later without touching callers; this M0
step shells out to a 7-Zip CLI via QProcess. Verified on three ifm sample
parts (KG6000, MFH200, R1D200 — all 7z), plus the corrupt/missing-file paths.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Shane Ringrose