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+#!/bin/sh
+#
+# Thomas Esser, David Aspinall, Simon Wilkinson.
+# Public domain.
+#
+# Simple script to attempt to find documentation for tex files.
+# Uses kpsewhich to find a .dvi, .pdf or .ps file along the
+# 'TeX system documentation' ($TEXDOCS, default: $TEXMF/doc) search path.
+#
+# Original version by David Aspinall <da@dcs.ed.ac.uk>
+#
+# This version rewritten for use with bash 2 and teTeX under Linux by
+# Simon Wilkinson <sxw@dcs.ed.ac.uk>
+#
+# Changes for web2c-7.2 resp. teTeX-0.9 and portability fixes by
+# Thomas Esser <te@dbs.uni-hannover.de>, Jun 14 1998
+#
+# Support for compressed documentation implemented by adopting changes
+# made by debian. Thomas Esser, Dec. 2004.
+
+test -f /bin/sh5 && test -z "$RUNNING_SH5" \
+ && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
+ && { RUNNING_SH5=true; export RUNNING_SH5; exec /bin/sh5 $0 ${1+"$@"}; }
+unset RUNNING_SH5
+
+test -f /bin/bsh && test -z "$RUNNING_BSH" \
+ && { UNAMES=`uname -s`; test "x$UNAMES" = xAIX; } 2>/dev/null \
+ && { RUNNING_BSH=true; export RUNNING_BSH; exec /bin/bsh $0 ${1+"$@"}; }
+unset RUNNING_BSH
+
+export PATH
+
+needsCleanup=false
+progname=texdoc
+tmpdir=${TMPDIR-${TEMP-${TMP-/tmp}}}/$progname.$$
+
+###############################################################################
+# setupTmpDir()
+# set up a temp directory and a trap to remove it
+###############################################################################
+setupTmpDir()
+{
+ $needsCleanup && return
+
+ trap 'cleanup --force' 1 2 3 7 13 15
+ needsCleanup=true
+ mkdir "$tmpdir" || abort "could not create directory \`$tmpdir'"
+}
+
+###############################################################################
+# abort(errmsg)
+# print `errmsg' to stderr and exit with error code 1
+###############################################################################
+abort()
+{
+ warn "$progname: $1."
+ cleanup
+ (exit 1)
+ exit 1
+}
+
+###############################################################################
+# cleanup()
+# clean up the temp area
+###############################################################################
+cleanup()
+{
+ case $1 in
+ --force)
+ $needsCleanup && test -n "$tmpdir" && test -d "$tmpdir" \
+ && { rm -f "$tmpdir"/*; cd /; rmdir "$tmpdir"; }
+ ;;
+ *) # directory might not be empty if some other viewer is still
+ # running, so be quiet about it
+ rmdir $tmpdir >/dev/null 2>&1;;
+ esac
+}
+
+
+# Viewing programs, according to filename extension. (You can
+# override or add to them by setting environment variables).
+# MacOS X: does not have X11 by default, so give dvi a low priority
+case `(uname -s) 2>/dev/null` in
+ Darwin)
+ : ${TEXDOCVIEW_dvi='(open %s >/dev/console 2>&1 || xdvi %s &) || echo "Method for opening %s did not work"'}
+ : ${TEXDOCVIEW_ps='open %s'}
+ : ${TEXDOCVIEW_pdf='open %s'}
+ : ${TEXDOCVIEW_html='open %s'}
+ : ${TEXDOCVIEW_txt="open -a TextEdit.app %s"}
+ : ${TEXDOCVIEW_="open -a TextEdit.app %s"} # no extension, default to pager
+ extlist='.pdf .ps .txt .dvi .html'
+ ;;
+ *)
+ : ${TEXDOCVIEW_dvi='(xdvi %s) &'}
+ : ${TEXDOCVIEW_pdf='(acroread %s) &'}
+ : ${TEXDOCVIEW_ps='(gv %s) &'}
+ : ${TEXDOCVIEW_html='mozilla -remote openURL'"'(%s)'"' 2>/dev/null || mozilla %s &'}
+ : ${TEXDOCVIEW_txt="${PAGER-more} %s"}
+ : ${TEXDOCVIEW_="${PAGER-more} %s"} # no extension, default to pager
+ extlist='.dvi .dvi.gz .dvi.bz2 .pdf .pdf.gz .pdf.bz2 .ps .ps.gz .ps.bz2 .txt .txt.gz .txt.bz2 .html'
+
+ # Commands run to uncompress files, according to filename extension.
+ : ${TEXDOCUNZIP_gz='gzip -d -c'}
+ : ${TEXDOCUNZIP_bz2='bzip2 -d -c'}
+ ;;
+esac
+
+mode=viewer
+help='Usage: texdoc [OPTION]... [NAME]...
+ Search for NAME in the TeX documentation and start a viewer.
+
+ --help show this help
+ -v verbose mode: show viewer command
+ -l just list all matching files. Do not start a viewer.
+ -s search the disk. remaining arguments will be passed
+ as egrep patterns to filter the find output.'
+
+verbosemode=false
+while
+ case $1 in
+ -s) mode=search; shift; break;;
+ -l) mode=list;;
+ -v) verbosemode=true;;
+ *-help)
+ echo "$help" >&2
+ exit 1;;
+ -*) echo "texdoc: option $1 not recognized" 1>&2;;
+ *) break;;
+ esac
+do shift; done
+
+case $# in
+ 0)
+ echo "$help" >&2
+ exit 1
+ ;;
+esac
+
+for name
+do
+ case $mode in
+ search)
+ find `kpsewhich --expand-path='$TEXMF/doc' | tr : ' '` -type f -print |
+ egrep $name
+ continue
+ ;;
+ esac
+
+ case $name in
+ texdoc)
+ man texdoc; continue;;
+ esac
+
+ found=false
+ for ext in "" $extlist; do
+
+ filename=`kpsewhich -format='TeX system documentation' $name$ext 2>/dev/null`
+ test -z "$filename" && continue
+ found=true
+
+ if test $mode = list; then
+ echo $filename
+ else
+ dir=`echo $filename | sed 's%/[^/]*$%%'`
+ ext=`echo $filename | sed -n 's%.*\.\([^/]*\)$%\1%p'`
+
+ eval uncompress="\$TEXDOCUNZIP_$ext"
+ if test -n "$uncompress"
+ then
+ ext=`echo $filename | sed -e "s|\\.$ext\$||" | sed 's%.*\.%%'`
+ fi
+ viewer=\$"TEXDOCVIEW_$ext"
+ if test -n "$uncompress"; then
+ src=`echo "$filename" | sed -e 's%.*/%%' -e 's%\.[^.]*$%%'`
+
+ # only one viewer per file, if the same file is given more
+ # than once
+ test -f "$tmpdir/$src" && break
+
+ setupTmpDir
+ eval "$uncompress $filename > $tmpdir/$src"
+ filename=$tmpdir/$src
+ viewer=`eval echo $viewer | sed -e "s|%s|$filename; rm -f $filename; cleanup|"`
+ else
+ viewer=`eval echo $viewer | sed -e "s|%s|$filename|g"`
+ fi
+
+ if test -z "$viewer"
+ then
+ echo "Don't know how to view file type $ext" 1>&2
+ echo "(matching file was $filename)" 1>&2
+ else
+ $verbosemode && echo $viewer
+ test -n "$dir" && test -d "$dir" && cd "$dir"
+ eval $viewer
+ break # just stop after the first usable extension
+ fi
+ fi
+
+ done
+ $found || echo "Can't find documentation for \`$name'" 1>&2
+done
+
+cleanup
+(exit 0)
+exit 0