From d560d7ec4bf87a9f9dd2f7135489b26db5f9fb4b Mon Sep 17 00:00:00 2001
From: Lily Chung <lkdc@mit.edu>
Date: Fri, 20 Sep 2019 01:38:57 -0700
Subject: Add the -0 option to null-terminate filenames.

---
 sor | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

(limited to 'sor')

diff --git a/sor b/sor
index 0960db8..f5d18a0 100755
--- a/sor
+++ b/sor
@@ -24,6 +24,7 @@ For each line from standard input, evaluate the specified SNIPPETs under Bash
 with the line as the argument. Print the line if any snippet exits with
 status 0.
 
+      -0, --null             separate input and output filenames by null
       --help                 display this help and exit
 EOF
 }
@@ -32,18 +33,43 @@ ask_for_help() {
 	echo "Try 'sor --help' for more information."
 }
 
-if ! temp=$(getopt -s bash -n sor -o '' -l help -- "$@"); then
+read_filename() {
+	local null_terminate="$1"
+	local target_var="$2"
+	if [ "$null_terminate" = "true" ]; then
+		IFS= read -r -d '' "$target_var"
+	else
+		read "$target_var"
+	fi
+}
+
+print_filename() {
+	local null_terminate="$1"
+	local filename="$2"
+	if [ "$null_terminate" = "true" ]; then
+		printf '%s\0' "$filename"
+	else
+		echo "$filename"
+	fi
+}
+
+if ! temp=$(getopt -s bash -n sor -o '0' -l null,help -- "$@"); then
 	ask_for_help >&2
 	exit 1
 fi
 eval set -- "$temp"
 unset temp
+null_terminate="false"
 while true; do
 	case "$1" in
 	--help)
 		help
 		exit 0
 		;;
+	-0|--null)
+		shift
+		null_terminate="true"
+		;;
 	--)
 		shift
 		break
@@ -55,10 +81,10 @@ while true; do
 	esac
 done
 
-while read file; do
+while read_filename "$null_terminate" file; do
 	for test in "$@"; do
 		if eval "$test \"$file\""; then
-			echo "$file"
+			print_filename "$null_terminate" "$file"
 			continue 2
 		fi
 	done
-- 
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