140 lines
3.4 KiB
Bash
Executable file
140 lines
3.4 KiB
Bash
Executable file
#!/bin/sh
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#
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# $NetBSD: doc-compress,v 1.3 2006/01/19 17:22:26 jlam Exp $
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#
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# This script is derived from software contributed to The NetBSD Foundation
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# by Alistair Crooks.
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#
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# This script compresses or decompresses files listed in standard input.
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# It handles symlinks by recreating the symlinks to point to the
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# compressed or uncompressed targets.
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#
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######################################################################
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#
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# NAME
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# doc-compress -- handle compression of PLIST entries
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#
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# SYNOPSIS
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# doc-compress [-v] [-z] prefix
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#
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# DESCRIPTION
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# doc-compress handles compression of files passed in via standard
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# input. The file paths must be relative to the specified prefix.
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# doc-compress handles symlinks to compressed files intelligently by
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# symlinking to the compressed target if compression is desired, and
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# similarly for decompression.
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#
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# OPTIONS
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# The following command line arguments are supported.
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#
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# -v Output the action taken for each file (compressing,
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# decompressing, or symlinking) to standard output.
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#
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# -z Compress the files. By default, the files are decompressed.
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#
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# ENVIRONMENT
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# MANZ This variable controls the default action taken. If "yes",
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# then this is equivalent to specifying the "-z" option.
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#
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# PKG_VERBOSE
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# This controls the default verbosity of the output. If
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# non-empty, then this is equivalent to specifying the "-v"
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# option.
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#
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######################################################################
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: ${ECHO=echo}
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: ${EXPR=expr}
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: ${GZIP_CMD=gzip}
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: ${GUNZIP_CMD=gunzip}
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: ${LN=ln}
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: ${LS=ls}
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: ${RM=rm}
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: ${TEST=test}
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self="${0##*/}"
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usage() {
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${ECHO} 1>&2 "usage: $self [-v] [-z] prefix"
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}
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compress=no
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verbose=no
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prefix=/nonexistent
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case "$MANZ" in
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[yY][eE][sS]) compress=yes ;;
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esac
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case "$PKG_VERBOSE" in
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"") ;;
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*) verbose=yes ;;
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esac
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# Process optional arguments
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while ${TEST} $# -gt 0; do
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case "$1" in
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-v) verbose=yes; shift ;;
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-z) compress=yes; shift ;;
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--) shift; break ;;
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-*) ${ECHO} 1>&2 "$self: unknown option -- ${1#-}"
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usage
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exit 1
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;;
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*) break ;;
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esac
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done
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${TEST} $# -gt 0 || { usage; exit 1; }
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# Process required arguments
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prefix="$1"
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while read file; do
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file="${file%.gz}"
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path="$prefix/$file"
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pathgz="$path.gz"
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case "$compress" in
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yes)
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# If compressed pages were requested and we find an
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# uncompressed page, then compress it, but if it was
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# a symlink, then remove it and create a "compressed"
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# symlink by symlinking to the compressed target.
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#
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if ${TEST} -h "$path"; then
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target=`${LS} -l $path`
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target="${target##*-> }"
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${RM} -f $pathgz
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${LN} -s $target.gz $pathgz
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${RM} -f $path
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${TEST} "$verbose" = no ||
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${ECHO} "Symlinking: $file"
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elif ${TEST} -f "$path"; then
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${GZIP_CMD} -nf $path
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${TEST} "$verbose" = no ||
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${ECHO} "Compressing: $file"
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fi
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;;
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no)
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# If uncompressed pages were requested and we find a
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# compressed page, then decompress it, but if it was
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# a symlink, then remove it and create an "uncompressed"
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# symlink by symlinking to the uncompressed target.
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#
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if ${TEST} -h "$pathgz"; then
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target=`${LS} -l $pathgz`
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target="${target##*-> }"
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target="${target%.gz}"
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${RM} -f $path
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${LN} -s $target $path
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${RM} -f $pathgz
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${TEST} "$verbose" = no ||
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${ECHO} "Symlinking: $file.gz"
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elif ${TEST} -f "$pathgz"; then
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${GUNZIP_CMD} -f $pathgz
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${TEST} "$verbose" = no ||
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${ECHO} "Decompressing: $file.gz"
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fi
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;;
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esac
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done
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