Conditionally check for honor code

Fixes #1

genericTester.sh

@@ -1,7 +1,20 @@
 #!/bin/bash
 
+# Constants
+PLEDGE="I confirm that my submitted solutions are the result of my own intellectual effort, and comply with the 1729 honor code and the UConn standards for academic integrity"
+
+# Default arguments
+CHECK_PLEDGE=false
 testOutputTransform=${testOutputTransform:-(lambda (x) x)}
 
+# Parse command line flags
+while true; do
+  case "$1" in
+    --check-pledge ) CHECK_PLEDGE=true; shift ;;
+    * ) break ;;
+  esac
+done
+
 # Get first file with .rkt extension.
 studentAnswersFile="$(ls | grep ".rkt" | head -n 1)"
 stdinToGenericTester="
@@ -14,6 +27,21 @@ RESULT=`echo -e $stdinToGenericTester | plt-r5rs genericTester.scm 2>> DEBUG`
 # Treat the last line of the output as a fake exit status
 EXITSTATUS=`echo "$RESULT" | tail -n 1`
 
+if [ "$CHECK_PLEDGE" = true ] ; then
+  # Check if pledge appears in the students answer
+  # file. The sed replacement generates a RegExp
+  # that allows us to find the statement if it
+  # spans multiple lines.
+  #
+  # Every student has to include the pledge in their code
+
+  if ! echo $PLEDGE | sed -e 's/ /[\\n\\s;]+/g' | grep -Pziq -f - "$studentAnswersFile" ; then
+    echo "Error: Statement to uphold 1729 honor code was not found." >> DEBUG
+    echo "false" > OUTPUT
+    exit 0
+  fi
+fi
+
 if [ "$EXITSTATUS" = "#t" ] ; then
   echo "true" > OUTPUT
 else