unzip_cli.help
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- .!
- .! File: UNZIP_CLI.HELP
- .!
- .! Author: Hunter Goatley
- .!
- .! Date: 12 Jul 94 (orig. UNZIP.RNH, 23 Oct 91)
- .!
- .! Description:
- .!
- .! TPU-processable source file to produce VMS on-line help for
- .! portable UnZip. Adapted from UNZIP.RNH, originally based on
- .! UNZIP.MAN (now UNZIP.DOC).
- .!
- .! To build:
- .! $ EDIT /TPU/NOSECTION/NODISPLAY/COMMAND=CVTHELP.TPU UNZIP_CLI.HELP
- .! $ RUNOFF /OUT=UNZIP.HLP UNZIP_CLI.RNH
- .! $ LIBR /HELP/INSERT libr UNZIP
- .!
- .! Modification history:
- .!
- .! 02-001 Hunter Goatley 12-JUL-1994 16:59
- .! Genesis.
- .! 02-002 Cave Newt 14-JUL-1994 11:36
- .! Fixed /*TEXT options and added/removed various options.
- .! 02-003 Cave Newt 28-JUL-1994 08:54
- .! Removed semicolons from comments and moved /ZIPINFO.
- .! 02-004 Christian Spieler 06-OCT-1995 02:02
- .! Changed to conform to revised .CLD definition.
- .! 02-005 Christian Spieler 06-FEB-1996 02:20
- .! Added description of /HELP qualifier.
- .! 02-006 Christian Spieler 12-MAY-1996 00:50
- .! Some clarifications/cleanups.
- .! 02-007 Christian Spieler 04-MAR-1997 22:25
- .! Added /[NO]CASE_INSENSITIVE to ZipInfo mode;
- .! documented the new /PASSWORD="decryption_key" option.
- .! 02-007 Christian Spieler 22-JUL-1997 22:37
- .! Formatting changes (prevent line wraps); added "Exit_Codes"
- .! subtopic (no version number change).
- .!
- <INIT>
- <MAIN>
- UNZIP
- UnZip is used to extract files compressed and packaged by Zip (see HELP ZIP
- for information on ZIP).
- For a brief help on Zip and Unzip, run each without specifying any
- parameters on the command line (or apply the /HELP qualifier).
- To get a brief help sceen about the alternate UNIX style command interface,
- run each with the -h option applied.
- UNZIP will list, test, or extract from a ZIP archive. ZIP archives are commonly
- found on MS-DOS systems; a VMS version of ZIP can also be found here.
- Archive member extraction is implied by the absence of the /SCREEN (-c),
- /PIPE (-p), /TEST (-t), /LIST (-l, -v) or /COMMENT (-z) qualifiers (options).
- All archive members are processed unless a filespec is provided to
- specify a subset of the archive members.
- <FORMAT>
- UNZIP zipfile [file[,...]] [/qualifiers]
- .!
- <TOPIC>
- Parameters
- <PARAMETER>
- zipfile
- <PTEXT>
- File specification for the ZIP archive(s) with optional wildcards. UnZip will
- perform actions specified for every zipfile matching the specification.
- The default file specification is SYS$DISK:[].ZIP.
- Note that self-extracting ZIP files are supported; just specify the .EXE
- suffix yourself.
- <TXETP>
- <PARAMETER>
- file
- <PTEXT>
- An optional comma-separated list of archive members to be processed;
- if no list is given, all archive members are processed. Expressions
- may be used to match multiple members. Expressions should be enclosed
- in double-quotes to prevent interpretation by DCL. Multiple filenames
- should be separated by blanks. Each file specification is similar to
- a Unix egrep expression and may contain:
- <LITERAL>
- |* matches a sequence of 0 or more characters
- |? matches exactly 1 character
- |[...] matches any single character found inside the brackets;
- | ranges are specified by a beginning character,
- | a hyphen, and an ending character. If a '!' or '^'
- | immediately follows the left bracket, then any character
- | not in the given range is matched.
- <LARETIL>
- <TXETP>
- <QUALIFIERS>
- <QUALIFIER>
- /ZIPINFO
- /ZIPINFO
- Displays information about the Zip archive and the files contained therein.
- This function used to be provided by a separate ZipInfo program.
- The following qualifiers may be specified with /ZIPINFO:
- <LITERAL>
- | /SHORT Short UNIX "ls -l" format (default)
- | /MEDIUM Medium UNIX "ls -l" format
- | /LONG Long UNIX "ls -l" format
- | /VERBOSE Verbose, multi-page format
- | /ONE_LINE Filenames only, one per line
- | /HEADER Print header lines
- | /TOTALS Print totals for files
- | /TIMES Print file times in sortable decimal format
- | /[NO]CASE_INSENSITIVE Match filenames case-insensitively
- | /[NO]PAGE Page screen output through built-in "more"
- <LARETIL>
- <QUALIFIER>
- /BINARY
- /BINARY[=KEYWORD]
- /NOBINARY (default)
- Selects conversion to VMS "standard" binary file format, which is
- "fixed length 512 byte records, no record attributes".
- The optional keywords recognized are:
- <LITERAL>
- | AUTO Automatically extracts files marked as "binary" (rather
- | than "text") in standard VMS binary file format. (default)
- | ALL Extracts all files in standard VMS binary file format.
- | NONE Same as /NOBINARY.
- <LARETIL>
- Note that a combination of /BINARY[=AUTO] and /TEXT[=AUTO] is allowed.
- (see /TEXT qualifier)
- <QUALIFIER>
- /BRIEF
- /BRIEF (default)
- When used with /LIST, specifies that a brief listing of the archive's
- contents is to be displayed. A brief listing shows the length, date,
- time, and file name for the files in the archive.
- <QUALIFIER>
- /CASE_INSENSITIVE
- /CASE_INSENSITIVE
- /NOCASE_INSENSITIVE (default)
- Match filenames case-insensitively. (Good default option under VMS.)
- <QUALIFIER>
- /COMMENT
- /COMMENT
- /NOCOMMENT
- Display the archive comment.
- <QUALIFIER>
- /DIRECTORY
- /DIRECTORY=directory-spec
- Specifies the output directory where all the extracted files are to be
- placed.
- <QUALIFIER>
- /EXCLUDE
- /EXCLUDE=(file[,...])
- A comma-separated list of files to exclude when extracting files.
- If multiple files are specified, the list should be included in
- parentheses.
- <QUALIFIER>
- /FRESHEN
- /FRESHEN
- /NOFRESHEN
- Freshen existing files; replace if newer. Does not cause any new files to
- be created.
- <QUALIFIER>
- /FULL
- /FULL
- When used with /LIST, specifies that a full listing of the archive's
- contents is to be displayed. A full listing shows the length,
- compression method, compressed size, compression ratio, date,
- time, CRC value, and file name for the files in the archive.
- <QUALIFIER>
- /HELP
- /HELP
- Displays a one-page brief help screen and exits quietly.
- <QUALIFIER>
- /JUNK
- /JUNK
- /NOJUNK (default)
- Junk the stored paths (don't recreated the archive's directory
- structure.
- <QUALIFIER>
- /LIST
- /LIST
- List the contents of the archive. /BRIEF and /FULL can be used to
- specify the amount of information displayed. The default is /BRIEF.
- <QUALIFIER>
- /LOWERCASE
- /LOWERCASE
- /NOLOWERCASE (default)
- Convert filenames from all-uppercase operating systems to lowercase. This
- option has no effect under VMS.
- <QUALIFIER>
- /OVERWRITE
- /OVERWRITE
- /NOOVERWRITE
- The qualifier /OVERWRITE forces overwriting of existing files when extracting.
- The negation /NOOVERWRITE results in never overwriting an existing file.
- The default action is to prompt for desired action when about to
- overwrite an existing file.
- For VMS, "overwriting" results in the creation of a new version of the file,
- unless version numbers are stored in the archive and /VERSION is specified.
- <QUALIFIER>
- /PAGE
- /PAGE
- /NOPAGE
- Feed all screen output through the built-in "more" pager.
- <QUALIFIER>
- /PASSWORD
- /PASSWORD=decryption-password
- Specifies a decryption password and prevents UnZip from prompting for
- a password in case the specified decryption key was wrong. The supplied
- string must be enclosed in double-quotes whenever it contains lowercase
- or special characters.
- <QUALIFIER>
- /PIPE
- /PIPE
- Extract files to SYS$OUTPUT with no informational messages.
- <QUALIFIER>
- /QUIET
- /QUIET[=SUPER]
- Perform operations quietly. The keyword SUPER can be specified to make
- operations even more quiet.
- <QUALIFIER>
- /RESTORE
- /RESTORE
- /NORESTORE
- Restore file owner and protection settings.
- <QUALIFIER>
- /SCREEN
- /SCREEN
- /NOSCREEN
- Extracts matching files to SYS$OUTPUT (the terminal).
- <QUALIFIER>
- /TEST
- /TEST
- /NOTEST
- Test archive files.
- <QUALIFIER>
- /TEXT
- /TEXT[=KEYWORD]
- /NOTEXT (default)
- Selects conversion to VMS standard text file format.
- The optional keywords recognized are:
- <LITERAL>
- | AUTO Automatically extracts files marked as "text" (rather
- | than "binary") in standard VMS text file format. (default)
- | ALL Extracts all files in standard VMS text file format.
- | NONE Same as /NOTEXT.
- <LARETIL>
- A similar functionality is available for binary files, see qualifier /BINARY.
- <QUALIFIER>
- /UPDATE
- /UPDATE
- /NOUPDATE
- Update existing files; create new ones if needed.
- <QUALIFIER>
- /VERSION
- /VERSION
- /NOVERSION (default)
- Retain VMS file version numbers.
- <TOPIC>
- Authors
- Info-ZIP; currently maintained by Greg Roelofs. VMS support maintained
- by Igor Mandrichenko, Christian Spieler and Hunter Goatley. Originally
- based on a program by Samuel H. Smith.
- VMS on-line help ported from UNZIP.DOC by Hunter Goatley.
- <TOPIC>
- Exit_Codes
- On VMS, UnZip's UNIX style exit values are mapped into proper
- VMS status codes:
- <LITERAL>
- | 1 (success) normal exit,
- | (0x7fff0000 + 16*UnZip_errnum) -W- warnings
- | (0x7fff0002 + 16*UnZip_errnum) -E- normal errors
- | (0x7fff0004 + 16*UnZip_errnum) -F- fatal errors
- <LARETIL>
- The UnZip error level (or exit code) approximates the exit
- codes defined by PKWARE and takes on the following values:
- <LITERAL>
- | VMS UnZip Type of error
- | severity errcode
- | - 0 normal; no errors or warnings detected.
- |
- | W 1 one or more warning errors were encountered,
- | but processing completed successfully any-
- | way. This includes zipfiles where one or
- | more files was skipped due to unsupported
- | compression method or encryption with an
- | unknown password.
- |
- | E 2 a generic error in the zipfile format was
- | detected. Processing may have completed
- | successfully anyway; some broken zipfiles
- | created by other archivers have simple work-
- | arounds.
- |
- | F 3 a severe error in the zipfile format was
- | detected. Processing probably failed imme-
- | diately.
- |
- | F 4 unzip was unable to allocate memory for one
- | or more buffers during program initializa-
- | tion.
- |
- | F 5 unzip was unable to allocate memory or
- | unable to obtain a tty to read the decryp-
- | tion password(s).
- |
- | F 6 unzip was unable to allocate memory during
- | decompression to disk.
- |
- | F 7 unzip was unable to allocate memory during
- | in-memory decompression.
- |
- | F 8 [currently not used]
- |
- | E 9 the specified zipfiles were not found.
- |
- | E 10 invalid options were specified on the com-
- | mand line.
- |
- | E 11 no matching files were found.
- |
- | F 50 the disk is (or was) full during extraction.
- |
- | F 51 the end of the ZIP archive was encountered
- | prematurely.
- |
- | E 80 the user aborted unzip prematurely with con-
- | trol-C (or similar)
- |
- | E 81 no files were found due to unsupported com-
- | pression methods or unsupported decryption.
- | (If even one additional file is successfully
- | processed, however, the exit status is 1.)
- |
- | E 82 no files were found due to bad decryption
- | password(s). This is also the exit status
- | if no files were found due to a combination
- | of unsupported compression and bad pass-
- | words. As in the previous case, however, a
- | single successful file will result in an
- | exit status of 1 instead.)
- <LARETIL>
- In addition, there is a compilation option to expand upon this behavior:
- An executable compiled with the option RETURN_CODES defined displays
- a human-readable explanation of what the error status means.
- <TOPIC>
- UNIX_Options
- The default action of UnZip is to extract all zipfile entries. The following
- options and modifiers can be provided:
- <LITERAL>
- | -Z ZipInfo mode
- | -c extract files to SYS$OUTPUT (terminal)
- | -f freshen existing files (replace if newer); create none
- | -h show brief help screen and exit quietly
- | -l list archive files (short format)
- | -p extract files to SYS$OUTPUT; no informational messages
- | -t test archive files
- | -u update existing files; create new ones if needed
- | -v list archive files (verbose format)
- | -z display only the archive comment
- |
- |MODIFIERS
- | -a auto-extract only text files in standard VMS text file format
- | -aa extract all files as text
- | -b auto-extract only binary files in VMS fixed 512 bytes records
- | -bb extract all files as binary VMS fixed 512 byte record files
- | -j junk paths (don't recreate archive's directory structure)
- | -n never overwrite existing files; don't prompt
- | -o OK to overwrite files without prompting
- | -q perform operations quietly (-qq => even quieter)
- | -C match filenames case-insensitively
- | -L convert filenames to lowercase if created on MSDOS, VMS, etc.
- | -P<pwd> supply decryption password on the command line (insecure!)
- | -M page output through built-in "more" function
- | -V retain (VMS) file version numbers
- | -X restore owner/protection info (may require privileges)
- <LARETIL>
- Note that uppercase options such as -C, -L, -M, -P, -V, -X and -Z must
- be specified in quotes. For example:
- <LITERAL>
- | $ unzip "-VX" -a zipfile
- <LARETIL>
- <TOPIC>
- UNZIP_OPTS_Default
- UnZip allows to modify its default behaviour by specifying (UNIX style)
- option defaults via the UNZIP_OPTS logical name.
- For example, the following will cause UnZip to match filenames without regard
- to case, restore owner/protection information and perform all operations at
- quiet-level 1 by default:
- <LITERAL>
- | $ define UNZIP_OPTS "-qCX"
- <LARETIL>
- Note that the quotation marks here are required to preserve lowercase options
- (opposite of the command-line behavior). To negate a default option on the
- command line, add one or more minus signs before the option letter, in
- addition to the leading switch character `-':
- <LITERAL>
- | $ unzip --ql zipfile
- <LARETIL>
- or
- <LITERAL>
- | $ unzip -l-q zipfile
- <LARETIL>
- At present it is not possible to decrement an option below zero--that is,
- more than a few minuses have no effect.
- UNZIP_OPTS may be defined as a symbol rather than a logical, but if both
- are defined, the logical is used.