add 'checksource' and 'mksource'

1 files changed, 40 insertions, 0 deletions

diff --git a/jh-checksource.sh b/jh-checksource.sh
new file mode 100644
index 0000000..b416427
--- /dev/null
+++ b/jh-checksource.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+sep='<nofileevercontainsthis>'
+resep='@'
+
+safe_patterns=(
+	'.*text.*'
+	'(GIF|JPEG|PNG) image data.*'
+)
+safe_files=("$@")
+
+unsafe_files="$(mktemp)"
+
+find . -type f -exec file -F"$sep" {} + | while read line; do
+	file="$(echo "$line"|sed "s${resep}${sep}.*${resep}${resep}")"
+	type="$(echo "$line"|sed "s${resep}.*${sep}\s*${resep}${resep}")"
+	safe=false
+	for filename in "${safe_files[@]}"; do
+		if [[ $file = "$filename" ]]; then
+			safe=true;
+		fi
+	done
+	for pattern in "${safe_patterns[@]}"; do
+		if [[ $type ~= "$pattern" ]]; then
+			safe=true;
+		fi
+	done
+	if ! $safe; then
+		printf "%s\n" "$file"
+	fi
+done > "$unsafe_files"
+
+if [[ -n "$(cat "$unsafe_files")" ]]; then
+	echo " ==> The source directory `pwd` contains binary files:"
+	sed 's/./  ->/' "$unsafe_files"
+	rm -f "$unsafe_files"
+	exit 1
+else
+	rm -f "$unsafe_files"
+fi