nsisunz is a NSIS plugin which allows you to extract files from ZIP archives.

nsisunz is great when you use another NSIS plug-in named NSISdl to download a ZIP file from the internet. Download a small installer which lets the user choose the components he/she want to install and the installer downloads it (QuickTime Setup does this).

• nsisunz was originally written by Saivert (http://saivert.com/), and hosted here: http://nsis.sourceforge.net/Nsisunz_plug-in
• Unicode NSIS support was added by Gringoloco023, February 6 2010
• Further improvements by past-due, 2018+
  • Update NSIS plugin API to 3.0
  • Update bundled zlib to 1.2.11
  • Update bundled Minizip to 1.1-8
  • CMake build support (builds both ANSI and Unicode DLLs)

For more, see the Examples/ directory.

InitPluginsDir
; Call plug-in. Push filename to ZIP first, and the dest. folder last.
nsisunz::UnzipToLog "$PLUGINSDIR\myzipfile.zip" "$INSTDIR"

; Always check result on stack
Pop $0
StrCmp $0 "success" ok
DetailPrint "$0" ;print error message to log
ok:

; You can also use the "Unzip" function if you don't want to use the log.
; It is a lot quicker, and is preferred for large ZIP archives.
nsisunz::Unzip "$PLUGINSDIR\myzipfile.zip" "$INSTDIR"

• Based on code in NSIS Zip2Exe portions Copyright © 1999-2001 Miguel Garrido ([email protected])
• ZLIB - Copyright © Mark Adler
• MiniZip - Copyright © 1998-2010 - by Gilles Vollant - version 1.1 64 bits from Mathias Svensson

Condition of use and distribution are the same as zlib:

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.