Delphi XE2 7zip wrapper - repost 2

A. Build an interface to the latest versions of [login to view URL] exactly as found in the attached file sevenzipwrap.pas. For your convenience the old sources of 7zip which have been converted into a DLL that exports the functions declared in [login to view URL] have been attached to this email as "7zip wrap sources for mia.7zip". Note that these sources are almost 10 years old. It will not be possible to update these because the underlying sources have changed too much between the 10 year old 7zip sources and the 7zip sources that are available today. 0) All functions and parameters must be implemented just as in the current version in order to completely compatible our existing main application which will use your code. 1) All formats which are available with the current 7zip library have to be supported for compression, extraction, updates, testing, deletion, etc. This includes native 7zip formats such as 7z and also third party formats such as WIM. 2) You must support all compression settings that are available for each compression format, including stored (no compression) compression settings. You are free to define your own "compression setting strings" as part of the lpAdvancedOptions parameter of the compression function. You must also support setting the number of threads to be used as part of this compression setting string parameter, because new versions of 7zip are highly multi-threaded. 3) You must support the highest compression settings that are possible in the 7zip library for the native 7z format, and also for all other formats such as ZIP. For example, while producing ZIP compatible archives, 7zip actually produces files that are smaller than the ZIP files produced by other archivers such as WinZip - by as much as 10%. Again as another example, there is an "Ultra" compression setting in 7zip which requires several gigabytes of memory during compression (and also with very large extraction memory requirements); these should be fully supported. 4) Some example compression setting strings are provided below for your convenience. Please note that some of these settings may be obsolete as of the latest 7zip version, so this is why you are free to define your own compression setting strings: 1- '-ms=off -mhc=off -m0=None -m0=Copy ' // store data in uncompressed form. 2- '-ms=off -mhc=off -m0=LZMA -m0d=15 -m0mf=hc3 -m0fb=32 ' // compress data using the LZMA data compression algorithm and a 32 KB buffer for hash chaining. 3- '-ms=off -mhc=off -m0=LZMA -m0d=21 -m0mf=bt4 -m0fb=32 ' // compress data using the LZMA data compression algorithm and a 4 MB buffer for binary trees. 4- '-ms=on -mhc=on -m0=BCJ -m1=LZMA -m1d=23 -m1mf=bt4 -m1fb=64 ' pre-process data using binary call jump converters to increase compressability, treat all files as a continuous data stream, and use an 8 MB buffer for LZMA compression. 5- '-ms=on -mhc=on -m0=BCJ2 -m1=LZMA -m1d=25 -m1mf=bt4b -m1fb=255 -m2=LZMA -m2d=20 -m2mf=bt4b -m2fb=64 -m3=LZMA -m3d=20 -m3mf=bt4b -m3fb=64 -mb0:1 -mb0s1:2 -mb0s2:3 ' // pre-process data, compress from a continuous stream, and use a 32 MB LZMA buffer. 5) Please ensure that you support both the older LZMA compression standard and the newer LZMA2 compression standard when creating 7zip archives. This can again be decided from the compression settings string parameter. 6) All work should be done with Embarcadero RAD Studio Delphi XE2. You should not be creating any external C++ DLL as in the example provided; because now it is possible to build direct Delphi interfaces to [login to view URL] from a single Delphi unit and/or project. 7) Full Unicode support is required - both for storing Unicode file names inside archives, and for extracting files/compressing files inside archives to/from Unicode folder paths on the real file system. 8) The current (old version) DLL sources are at 7zipwrap_sources for [login to view URL] only\src\7zipWrap\src\[login to view URL] - it is a Visual C++ 2003 project.