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rar7z.cfc : RAR and 7-Zip compression for ColdFusion

ColdFusion has built-in support for .zip archives (after all, CF is built on Java, and all those .jar files are actually just .zip files).  This works well for out-of-the box compression for most applications.  Where it doesn't work is when you have to work with much larger files.  java.util.zip craps out if you give it files over about 2GB.  In the modern world, many files are larger.



So since I obviously came across this limitation, I explored options and determined that the world relies on rar and more recently on 7-zip for compression of larger files.  The most desired feature I was after was being able to split archives into smaller files.  My specific application was that I have a huge database backup file (9+GB) that I need to archive, but windows doesn't work too well with large files.  So with rar or 7-zip (or just 7z) you can compress large files and split them into smaller files so you can put them on a cd or dvd, etc.



Now that I had a working solution, integrating it into my app is the issue, so I decided to write rar7z.cfc -- a wrapper for both rar and 7z compression utils.



Here is version 1.0 -- lib_rar7z_cfc_v100.zip



This is of course released as-is no warranty, no support, blah blah, and eventually if people like this, I will officially make it open source.  Its a small piece of code, so who knows how useful it will be.



There are a few sample pieces of code to help figure out how to use is.  It is relatively easy:



Compress a file:



<cfinvoke component="lib.rar7z" method="compressFile" returnvariable="compressFile">

    <cfinvokeargument name="SrcPathAndFile" value="#ExpandPath(".")#\myfile.dat">

    <cfinvokeargument name="ArchivePathAndFile" value="#ExpandPath(".")#\myfile.rar">

    <cfinvokeargument name="VolumeSize" value="3500">

    <cfinvokeargument name="Timeout" value="90">

    <cfinvokeargument name="Engine" value="rar">

</cfinvoke>



List an archive's contents:



<cfinvoke component="lib.rar7z" method="listContents" returnvariable="listContents">

    <cfinvokeargument name="ArchivePathAndFile" value="#ExpandPath(".")#\myfile.rar">

    <cfinvokeargument name="Timeout" value="90">

    <cfinvokeargument name="Engine" value="rar">

</cfinvoke>



Extract files from an archive:



<cfinvoke component="lib.rar7z" method="extractArchive" returnvariable="extractArchive">

    <cfinvokeargument name="ArchivePathAndFile" value="#ExpandPath(".")#\myfile.rar">

    <cfinvokeargument name="OutputDir" value="#ExpandPath("./extract")#">

    <cfinvokeargument name="Timeout" value="90">

    <cfinvokeargument name="Engine" value="rar">

</cfinvoke>



If this cfc is helpful, tell people about it and leave comments!  If I know people are using it, I will work on it and improve it over time.  ciao

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