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#!/bin/sh
# $Id: texlinks 18035 2010-04-28 17:41:52Z mpg $
# Thomas Esser, 1999, 2002, 2003. public domain.
# texlinks: script to maintain symlinks from format to engine. Interprets
# the lines given in fmtutil.cnf.
# History:
# (Further changes in ChangeLog.)
# Tue Oct 9 14:23:01 BST 2007
# Added unlink option (-u) to aid OpenBSD package uninstall
# Edd Barrett <vext01@gmail.com>
# Sun Aug 28 21:41:06 CEST 2005
# remove special cases for csplain,cslatex,pdfcslatex,pdfcsplain
# Fr Apr 8 19:15:05 CEST 2005
# cleanup now has an argument for the return code
# So Mar 27 18:52:06 CEST 2005
# honor $TMPDIR, $TEMP and $TMP, not just $TMP
# Mon May 10 20:52:48 CEST 2004
# kpseaccess instead of access
# Thu Dec 25 22:11:53 CET 2003, te:
# add version string
# Tue Apr 9 22:46:34 CEST 2002, te:
# do not create symlinks for cont-??, metafun and mptopdf
test -f /bin/sh5 && test -z "$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
# hack around a bug in zsh:
test -n "${ZSH_VERSION+set}" && alias -g '${1+"$@"}'='"$@"'
version='$Id: texlinks 18035 2010-04-28 17:41:52Z mpg $'
progname=texlinks
cnf=fmtutil.cnf # name of the config file
usage='Usage: texlinks [OPTION]... [DIRECTORY]...
Create symbolic links format -> engine according to fmtutil setup.
Mandatory arguments to long options are mandatory for short options too.
-e, --exeext EXT append EXT to symlink targets (default: none)
-f, --cnffile FILE use FILE as config file (default: fmtutil.cnf)
-m, --multiplatform operate in all platform specific directories
(default: operate only in directory for this platform)
-q, --quiet silently skip existing scripts / binaries
(default: issue warning)
-s, --silent same as -q
-u, --unlink remove symlinks created by texlinks
-v, --verbose enable verbose messages (default: off)
-h, --help show this help text
--version show version string
The DIRECTORY arguments are an optional list of directories in which to
operate. If no directories are specified and --multiplatform is
likewise not specified, the directory of this script itself is used.
With --multiplatform, all child dirs of an upper-level bin/ dir are used.
Report bugs to: tex-k@tug.org
TeX Live home page: <http://tug.org/texlive/>
'
###############################################################################
# abort(errmsg)
# print `errmsg' to stderr and exit with error code 1
###############################################################################
abort() { errmsg "texlinks: $1."; cleanup 1; }
# error message to stderr:
errmsg() { echo "$@" >&2; }
# give message to stderr only if "verbose" mode is on:
verbose_echo() { $verbose && errmsg "$@"; }
# in verbose mode: show command that is executed:
verbose_do() { verbose_echo "$@"; "$@"; }
###############################################################################
# cleanup()
# clean up the temp area and exit with proper exit status
###############################################################################
cleanup()
{
rc=$1
$needsCleanup && test -n "$tmpdir" && test -d "$tmpdir" \
&& { rm -f "$tmpdir"/*; cd /; rmdir "$tmpdir"; }
exit $rc
}
###############################################################################
# setupTmpDir()
# set up a temp directory and a trap to remove it
###############################################################################
setupTmpDir()
{
$needsCleanup && return
trap 'cleanup 1' 1 2 3 7 13 15
needsCleanup=true
(umask 077; mkdir "$tmpdir") \
|| abort "could not create directory \`$tmpdir'"
}
# search a binary along $PATH:
check_for_binary()
{
testbin=$1
set x `echo "$PATH" | sed 's/^:/.:/; s/:$/:./; s/::/:.:/g; s/:/ /g'`; shift
for i
do
if [ -x "$i/$testbin" ]; then
echo "$i/$testbin"
return 0
fi
done
return 1
}
###############################################################################
# install_link(dest src)
# create a symlink like ln -s dest src, but make sure that src is not
# an existing binary, possibly adding the executable extension if
# passed on the command.
###############################################################################
install_link()
{
# make symlink src -> dest
dest=$1; src=$2
case $src in
*/mf)
if test "$dest" = mf-nowin; then
if test -f $selfautoloc/mfw; then
dest=mfw # name for windows-enabled mf, once upon a time
verbose_echo "both mfw and mf-nowin exists, $src linked to $dest"
fi
if test -f $selfautoloc/mf && test -f $selfautoloc/mf-nowin; then
# have both mf and mf-nowin binaries. no link.
verbose_echo "skipped metafont symlink $src -> $dest (special case)"
return
fi
fi
;;
esac
# append .exe if supplied (for cygwin).
test -n "$exeext" && dest="$dest$exeext"
case $src in
*/cont-??|*/mptopdf)
# context includes wrapper scripts that create/run these.
verbose_echo "skipped ConTeXtish symlink $src -> $dest (special case)"
;;
*)
test "x$src" != "x`(ls -ld $src | awk '{print $NF}') 2>/dev/null`" &&
rm -f "$src"
if test -f "$src"; then
case $silent in
true)
;;
*)
errmsg "install_link $src -> $dest failed: file already exists."
;;
esac
else
verbose_do ln -s "$dest" "$src"
fi
;;
esac
}
###############################################################################
# search_symlinkdir()
# look if $PATH has only symlinks to the real binaries and find that
# directory. Also check if this directory is writable.
###############################################################################
search_symlinkdir()
{
kpsewhich=`check_for_binary kpsewhich`
test -z "$kpsewhich" && return 1
symlinkdir=`echo $kpsewhich | sed 's@/*kpsewhich$@@'`
kpseaccess -w "$symlinkdir" || return 1
touch "$symlinkdir/tl$$"
if test -f "$selfautoloc/tl$$"; then
rm -f "$symlinkdir/tl$$"
return 1
else
rm -f "$symlinkdir/tl$$"
return 0
fi
}
###############################################################################
# upd_symlinkdir()
# if $PATH has only symlinks to the real binaries, update that directory
# that holds the symlinks
###############################################################################
upd_symlinkdir()
{
search_symlinkdir || return 0
for i in `sed 's@ .*@@' cnf_file_ln.$$`; do
install_link "$selfautoloc/$i" "$symlinkdir/$i"
done
}
###############################################################################
# rm_link()
# Delete a previously installed link
###############################################################################
rm_link()
{
link=$1;
if test -e $link; then
if test -h $link; then
verbose_do rm -Rf $link
else
verbose_echo "kept $link, since not a symlink"
fi
else
verbose_echo "skipped $link, non-existent"
fi
}
###############################################################################
# main()
# parse commandline arguments, initialize variables,
# switch into temp. direcrory, execute desired command
###############################################################################
main()
{
cnf_file= # global variable: full name of the config file
dirs=
needsCleanup=false
exeext=
multiplatform=false
verbose=false
unlink=false
silent=false
thisdir=`pwd`
: ${KPSE_DOT=$thisdir}; export KPSE_DOT
selfautoloc=`kpsewhich --expand-var='$SELFAUTOLOC'`
while
case $1 in
--h*|-h)
echo "$usage"; exit 0;;
--version)
echo "$progname version $version"; exit 0;;
--cnffile|-f)
shift; cnf_file=$1;;
--e*|-e) shift; exeext=$1;;
--m*|-m) multiplatform=true;;
--s*|-s|--q*|-q) silent=true;;
--u*|-u) unlink=true;;
--v*|-v) verbose=true;;
-*) errmsg "fmtutil: unknown option \`$1' ignored.";;
*) break;;
esac
do test $# -gt 0 && shift; done
dirs="$*"
# if no cnf_file from command-line, look it up with kpsewhich:
test -z "$cnf_file" && cnf_file=`kpsewhich --format='web2c files' $cnf`
test -f "$cnf_file" || abort "config file \`$cnf' not found"
tmpdir=${TMPDIR-${TEMP-${TMP-/tmp}}}/texlinks.$$
setupTmpDir
cd "$tmpdir" || cleanup 1
sed '/^[ ]*#/d; /^[ ]*$/d' $cnf_file \
| awk '{print $1, $2}' > cnf_file_ln.$$
if test -z "$dirs"; then
if test $multiplatform = true; then
case $selfautoloc in
*/bin) dirs=$selfautoloc;;
*) parent=`kpsewhich --expand-var='$SELFAUTODIR'`
dirs=`find $parent -type f -name kpsewhich -print \
| sed 's@/kpsewhich$@@'`;;
esac
else
dirs=$selfautoloc
fi
fi
for d in $dirs; do
kpseaccess -w $d \
|| { errmsg "$d: no write permissions. Skipping..."; continue; }
# cnf_file_ln.$$ has lines with "format engine" pairs
set x `cat cnf_file_ln.$$`; shift
while test $# != 0; do
fmt=$1; engine=$2; shift; shift
# Some broken shells destroy the positional arguments when calling a
# shellfunction. Therefore, we save and restore them "by hand" in the
# main_args_while variable.
main_args_while="$@"
test "x$fmt" = "x$engine" && continue
if test -f "$d/$engine$exeext"; then
case $unlink in
true)
rm_link "$d/$fmt";;
*)
install_link "$engine" "$d/$fmt";;
esac
else
verbose_echo "skipped $d/$engine, engine does not exist"
fi
# restore positional arguments:
set x $main_args_while; shift
done
done
upd_symlinkdir
}
main ${1+"$@"}
# set successful return code
cleanup 0