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-
- UNSIT -- StuffIt Archive File Disassembler
- ------------------------------------------
-
- INTRODUCTION:
- UNSIT is a simple utility for PC users to extract files from a
- StuffIt file. StuffIt files usually appear with the ".SIT" extension.
-
- StuffIt is a program for Macs similar to ARC for PCs. It
- collects several files in a single file and also compresses the data
- using run length, Huffman, or LZW compression. StuffIt is emerging as
- THE archive program for the Mac. Unfortunately, this means new Mac
- files are frequently inaccessible to PC users as they are now
- "stuffed" to save transmission costs and disk space.
-
- UNSIT does not handle PackIt archive files which usually appear
- with the ".PIT" extension. An extract-only utility called UnPackIt is
- available on the PC.
-
-
- VERSION:
- UNSIT Version 2.3
-
-
- PURPOSE:
- List files in and extract files from a StuffIt archive file on a
- PC.
-
-
- COMMAND OPTIONS:
- unsit [l|v|x|e|xb|eb] StuffItFile[.SIT]
-
- l, v = list directory of files
- x, e = extract all files with CR to CR LF translation on text
- files
- xb, eb = extract all files with no translation
-
-
- Mac files come with two parts, the resource fork and data
- fork. I have not found any use on the PC for the resource fork but
- UNSIT will extract it anyway.
-
- The normal EXTRACT options, 'x' or 'e', will automatically
- convert Mac text files to PC text files. The only difference appears
- to be Mac text file lines end with only a carriage return (CR) while
- PC text file lines end with carriage return (CR) and line feed (LF).
-
- If the translation causes any problems, use the EXTRACT BINARY
- options, 'xb' or 'eb' to turn off the translation. Non-text files are
- always extracted without translation.
-
-
- NOTICES:
- Copyright (c) 1988, Brian K. Uechi. Portions of this program
- written and copyrighted by Raymond Lau. You may copy and distribute
- this program freely, provided that it is distributed ONLY in its
- original, unmodified state.
-
- DISCLAIMER: No warranty of any kind is made with regard to this
- program. The Authors shall be not liable for errors contained herein
- or for incidental or consequential damages in connection with
- furnishing, performance, or use of this material.
-
- Brian K. Uechi
- GEnie: B.UECHI
- CompuServe: 72330,155
-
-
- VERSION 2.3 23 Nov 1988
- Earlier versions always assumed the archive file started with a
- MacBinary header. This is not always true. UNSIT refused to process
- these files. This version can handle zero or more MacBinary headers
- on the archive file.
-
-
- VERSION 2.2 27 May 1988
- Older versions reversed LZW and Huffman compression types on the
- file directory listing. Decompression was always done correctly;
- problem only affects report.
-
-
- VERSION 2.0 26 Feb 1988
- UNSIT 2.0 now has an option to add a MacBinary header. Some DOS
- program require this header for proper operation. An extracted file
- with the MacBinary header should now exactly match the file uploaded
- directly from a Mac. A MacBinary header is added to Mac files when
- they are transmitted by almost all Mac terminal programs. The header
- contains information from the Mac directory entry for that file such
- as file name, file type, and attribute flags.
-
- A Mac file with a MacBinary header contain a resource fork and a
- data fork, either of which may be empty. Some DOS programs do not
- work correctly if the Mac file contains a non-empty resource fork so
- there is an option to extract just the data fork even if both forks
- are present in the SIT file. It is also possible to extract both
- forks into a single file.
-
- No new option flags have been added. You will have the option to
- put a MacBinary header or not when extracting each file. This makes
- it easier to extract a binary data file with a header then extract a
- text file without a header in one pass through the Stuffit file.
-