1 files changed, 51 insertions, 1 deletions

diff --git a/format.sh b/format.sh
index 9af69f1..a8f2265 100755
--- a/format.sh
+++ b/format.sh
@@ -1,2 +1,52 @@
 #!/bin/sh
-exec recfmt "`cat $1`"
+##
+# Usage: format.sh TEMPLATE [SELEXP]
+#
+# This runs recfmt w/ template file TEMPLATE, taking input from stdin,
+# and writing output to stdout.
+#
+# Optional arg SELEXP is an expression passed to ‘recsel -e’.  If specified,
+# stdin is first processed by recsel and its output is then piped to recfmt
+# for formatting.  If recsel exits failurefully (e.g., given invalid SELEXP),
+# no output is written and format.sh exits failurefully as well.
+##
+me=$(basename $0)
+
+version='1.4'
+# 1.4  -- create $TMPDIR if it does not exist
+# 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