Simone
108 lines
3.0 KiB
Markdown
108 lines
3.0 KiB
Markdown
# Nsis7z NSIS Plugin
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NSIS plugin for extracting 7z, ZIP and NSIS archives.
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---
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## Available Versions
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| Version | 7-Zip | Formats | Notes |
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|---------|-------|---------|-------|
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| [19.00](7zip-19.00/README.md) | 7-Zip 19.00 | 7z, LZMA, XZ, Split | Original updated version |
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| [25.01](7zip-25.01/README.md) | 7-Zip 25.01 | 7z, ZIP, LZMA, XZ, Split, **NSIS** | With NSIS archive support |
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| [**26.00**](7zip-26.00/README.md) | 7-Zip 26.00 | 7z, ZIP, LZMA, XZ, Split, **NSIS** | **Recommended** |
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## Supported Architectures
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| Architecture | Description |
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|--------------|-------------|
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| x86-ansi | 32-bit ANSI (legacy) |
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| x86-unicode | 32-bit Unicode |
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| **amd64-unicode** | 64-bit Unicode |
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## Quick Start
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```nsis
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!addplugindir "plugins\x86-unicode"
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Section
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; Simple extraction (7z, ZIP, NSIS)
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Nsis7z::Extract "$EXEDIR\data.7z"
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; With progress text in label
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Nsis7z::ExtractWithDetails "$EXEDIR\data.7z" "Installing %s..."
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; With callback to show files in listbox
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GetFunctionAddress $0 MyExtractCallback
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Nsis7z::ExtractWithFileCallback "$EXEDIR\data.7z" $0
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SectionEnd
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Function MyExtractCallback
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Pop $0 ; completedSize
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Pop $1 ; totalSize
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Pop $2 ; fileName
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DetailPrint "$2"
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FunctionEnd
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```
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## Build Scripts
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The repo includes a single unified `build_plugin.py` script that replaces the previous per-version scripts.
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### Build
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```powershell
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# Recommended: 7-Zip 26.00 with auto-detected toolset
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python build_plugin.py
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# Select 7-Zip version (19.00 | 25.01 | 26.00)
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python build_plugin.py --7zip-version 25.01
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# Specific toolset (2022|2026|auto)
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python build_plugin.py --toolset 2022
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# Print version and exit
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python build_plugin.py --version
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```
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## Repository Structure
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```
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ns7zip/
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├── build_plugin.py # Unified build script (all versions)
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├── rebuild_nsis7z1900-src.ps1 # Rebuilds 19.00 sources
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├── 7zip-19.00/ # 7-Zip 19.00 modified
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├── 7zip-25.01/ # 7-Zip 25.01 modified (ZIP + NSIS handler)
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└── 7zip-26.00/ # 7-Zip 26.00 modified (ZIP + NSIS handler)
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```
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## Changes from Original
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### NSIS Archive Handler (25.01, 26.00)
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Added support for extracting `.exe` archives created with NSIS (not present in the original plugin):
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- `Archive\Nsis\NsisHandler.cpp/h`
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- `Archive\Nsis\NsisIn.cpp/h`
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- `Archive\Nsis\NsisDecode.cpp/h`
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- `Archive\Nsis\NsisRegister.cpp`
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- `Compress\BZip2Decoder.cpp/h` (required by NsisDecode)
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- `Compress\BZip2Crc.cpp`
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### Bug Fixes (25.01, 26.00)
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- **Divide-by-zero**: added guard `if (totalSize == 0) return 0` in `GetPercentComplete`
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- **ExtractWithFileCallback**: NSIS callback triggered only on filename change (avoids crash with `totalSize = UINT64_MAX` on first `SetTotal` call)
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## License
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- **7-Zip**: LGPL 2.1 + BSD 3-clause
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- **NSIS Plugin**: Afrow UK
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## Credits
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- Igor Pavlov (7-Zip)
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- Afrow UK (Original plugin)
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- Simone (x64 support, VS2022/VS2026, ZIP, NSIS handler, ExtractWithFileCallback)
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---
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*See [README_IT.md](README_IT.md) for the Italian version.*
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