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basic.sh
executable file
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basic.sh
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#!/bin/bash
set -o nounset
set -o errexit
VERBOSE_MODE=0
function error_handler()
{
local STATUS=${1:-1}
[ ${VERBOSE_MODE} == 0 ] && exit ${STATUS}
echo "Exits abnormally at line "`caller 0`
exit ${STATUS}
}
trap "error_handler" ERR
PROGNAME=`basename ${BASH_SOURCE}`
DRY_RUN_MODE=0
function print_usage_and_exit()
{
set +x
local STATUS=$1
echo "Usage: ${PROGNAME} [-v] [-v] [--dry-run] [-h] [--help]"
echo ""
echo " Options -"
echo " -v enables verbose mode 1"
echo " -v -v enables verbose mode 2"
echo " --dry-run show what would have been dumped"
echo " -h, --help shows this help message"
exit ${STATUS:-0}
}
function debug()
{
if [ "$VERBOSE_MODE" != 0 ]; then
echo $@
fi
}
GETOPT=`getopt -o vh --long dry-run,help -n "${PROGNAME}" -- "$@"`
if [ $? != 0 ] ; then print_usage_and_exit 1; fi
eval set -- "${GETOPT}"
while true
do case "$1" in
-v) let VERBOSE_MODE+=1; shift;;
--dry-run) DRY_RUN_MODE=1; shift;;
-h|--help) print_usage_and_exit 0;;
--) shift; break;;
*) echo "Internal error!"; exit 1;;
esac
done
if (( VERBOSE_MODE > 1 )); then
set -x
fi
# template area is ended.
# -----------------------------------------------------------------------------
if [ ${#} != 0 ]; then print_usage_and_exit 1; fi
# current dir of this script
CDIR=$(readlink -f $(dirname $(readlink -f ${BASH_SOURCE[0]})))
PDIR=$(readlink -f $(dirname $(readlink -f ${BASH_SOURCE[0]}))/..)
# -----------------------------------------------------------------------------
# functions
function make_calmness()
{
exec 3>&2 # save 2 to 3
exec 2> /dev/null
}
function revert_calmness()
{
exec 2>&3 # restore 2 from previous saved 3(originally 2)
}
function close_fd()
{
exec 3>&-
}
function jumpto
{
label=$1
cmd=$(sed -n "/$label:/{:a;n;p;ba};" $0 | grep -v ':$')
eval "$cmd"
exit
}
# end functions
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
# main
make_calmness
if (( VERBOSE_MODE > 1 )); then
revert_calmness
fi
cd ${CDIR}
fstcompile --isymbols=isyms.txt --osymbols=osyms.txt --keep_isymbols --keep_osymbols text.txt binary.fst
fstprint --isymbols=isyms.txt --osymbols=osyms.txt binary.fst text.fst
fstinfo binary.fst
fstdraw --isymbols=isyms.txt --osymbols=osyms.txt binary.fst binary.dot
dot -Tpng binary.dot > binary.png
close_fd
# end main
# -----------------------------------------------------------------------------