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#!/bin/sh
##
# Usage: format.sh TEMPLATE [SELEXP]
#
# This runs recfmt w/ template file TEMPLATE, taking input from stdin,
# and writing output to stdout.
#
# Optional arg SELEXP is an expression passed to ‘recsel -e’. If specified,
# stdin is first processed by recsel and its output is then piped to recfmt
# for formatting. If recsel exits failurefully (e.g., given invalid SELEXP),
# no output is written and format.sh exits failurefully as well.
##
me=$(basename $0)
version='1.3'
# 1.3 -- add support for optional arg SELEXP
# 1.2 -- add check for required arg TEMPLATE
# 1.1 -- add --help/--version support
# 1.0 -- initial release
if [ x"$1" = x--help ] ; then
sed '/^##/,/^##/!d;/^##/d;s/^# //g;s/^#$//g' $0
exit 0
fi
if [ x"$1" = x--version ] ; then
echo $me '(gana)' $version
exit 0
fi
if [ x"$1" = x ] ; then
echo >&2 "$me: ERROR: missing arg TEMPLATE (try --help)"
exit 1
fi
template="$1"
if [ x"$2" = x ] ; then : ; else
selexp="$2"
fi
if [ "$selexp" ] ; then
t=$(mktemp)
trap "rm -f $t" EXIT
recsel -e "$selexp" > $t &&
recfmt -f "$template" < $t
else
exec recfmt -f "$template"
fi
# format.sh ends here
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