Adding new judge feature -- remove trailing whitespace.

judges/recodex_token_judge/judge.hpp

@@ -274,7 +274,7 @@ template <class READER, class LINE_COMPARATOR> class Judge
 	 */
 	void logImpairedCorrectLine(const line_t &line) const
 	{
-		bpp::log().error() << "-" << line.lineNumber() << ": " << line.getRawLineAsString();
+		bpp::log().error() << "-" << line.lineNumber() << ": " << line.getRawLineAsString() << "\n";
 	}
 
 
@@ -283,7 +283,7 @@ template <class READER, class LINE_COMPARATOR> class Judge
 	 */
 	void logImpairedResultLine(const line_t &line) const
 	{
-		bpp::log().error() << "+" << line.lineNumber() << ": " << line.getRawLineAsString();
+		bpp::log().error() << "+" << line.lineNumber() << ": " << line.getRawLineAsString() << "\n";
 	}
 
 

judges/recodex_token_judge/reader.hpp

@@ -174,6 +174,7 @@ template <typename CHAR = char, typename OFFSET = std::uint32_t> class Reader
 	bool mIgnoreEmptyLines; ///< Empty lines are skipped completely.
 	bool mAllowComments; ///< Allow comments (lines starting with '#'), which are completely skipped.
 	bool mIgnoreLineEnds; ///< Treat end lines as regular whitespace.
+	bool mIgnoreTrailingWhitespace; ///< All whitespace (empty lines) at the end of the file is ignored
 
 	char_t *mData; ///< Mmaped data of the file.
 	offset_t mOffset; ///< Offset from the beginning of the file (currently processed).
@@ -248,9 +249,9 @@ template <typename CHAR = char, typename OFFSET = std::uint32_t> class Reader
 	}
 
 public:
-	Reader(bool ignoreEmptyLines, bool allowComments, bool ignoreLineEnds)
+	Reader(bool ignoreEmptyLines, bool allowComments, bool ignoreLineEnds, bool ignoreTrailingWhitespace)
 		: mIgnoreEmptyLines(ignoreEmptyLines), mAllowComments(allowComments), mIgnoreLineEnds(ignoreLineEnds),
-		  mData(nullptr), mOffset(0), mLength(0)
+		  mIgnoreTrailingWhitespace(ignoreTrailingWhitespace), mData(nullptr), mOffset(0), mLength(0)
 	{
 	}
 
@@ -275,6 +276,13 @@ template <typename CHAR = char, typename OFFSET = std::uint32_t> class Reader
 		mLength = mFile.length() / sizeof(char_t);
 		mLineNumber = 1;
 		mLineOffset = 0;
+
+		if (mIgnoreTrailingWhitespace) {
+			// Reduce the file length to ignore all whitespace at the end ...
+			while (mLength > 0 && std::isspace(mData[mLength - 1])) {
+				--mLength;
+			}
+		}
 	}
 
 
@@ -313,7 +321,9 @@ template <typename CHAR = char, typename OFFSET = std::uint32_t> class Reader
 	 */
 	std::unique_ptr<Line> readLine()
 	{
-		if (eof()) { return std::unique_ptr<Line>(); }
+		if (eof()) {
+			return std::unique_ptr<Line>();
+		}
 
 		offset_t startOffset = mOffset;
 		auto line = bpp::make_unique<Line>(*this, mLineNumber, mData + mOffset);
@@ -348,7 +358,8 @@ template <typename CHAR = char, typename OFFSET = std::uint32_t> class Reader
 			return std::unique_ptr<Line>();
 		}
 
-		line->mRawLength = mOffset - startOffset;
+		line->mRawLength =
+			line->mTokens.size() > 0 ? line->mTokens.back().charNumber() + line->mTokens.back().length() : 0;
 		return line;
 	}
 };

judges/recodex_token_judge/recodex-token-judge.cpp

@@ -28,7 +28,10 @@ int main(int argc, char *argv[])
 			"allow-comments", "Lines starting with '#' are ignored completely."));
 		args.registerArg(bpp::make_unique<bpp::ProgramArguments::ArgBool>(
 			"ignore-line-ends", "New lines characters are treated as regular whitespace."));
-		args.getArg("ignore-empty-lines").conflictsWith("ignore-line-ends");
+		args.registerArg(bpp::make_unique<bpp::ProgramArguments::ArgBool>("ignore-trailing-whitespace",
+			"Any whitespace (i.e., empty lines or comments if allowed) at the end of files is ignored."));
+		args.getArg("ignore-empty-lines").conflictsWith("ignore-line-ends").conflictsWith("ignore-trailing-whitespace");
+		args.getArg("ignore-line-ends").conflictsWith("ignore-trailing-whitespace");
 
 		// Token comparator args
 		args.registerArg(bpp::make_unique<bpp::ProgramArguments::ArgBool>(
@@ -73,10 +76,12 @@ int main(int argc, char *argv[])
 		// Open data readers ...
 		Reader<> correctReader(args.getArgBool("ignore-empty-lines").getValue(),
 			args.getArgBool("allow-comments").getValue(),
-			args.getArgBool("ignore-line-ends").getValue());
+			args.getArgBool("ignore-line-ends").getValue(),
+			args.getArgBool("ignore-trailing-whitespace").getValue());
 		Reader<> resultReader(args.getArgBool("ignore-empty-lines").getValue(),
 			args.getArgBool("allow-comments").getValue(),
-			args.getArgBool("ignore-line-ends").getValue());
+			args.getArgBool("ignore-line-ends").getValue(),
+			args.getArgBool("ignore-trailing-whitespace").getValue());
 
 		correctReader.open(args[0]);
 		resultReader.open(args[1]);

judges/recodex_token_judge/tests/10.error.out

@@ -1,7 +1,12 @@
-0
--1: first row 42
-+2: first
-3: unexpected 'row'
-+4: 42 pzr
--4: kzr pzr # this is the end
-+5: kzr
+0
+-1: first row 42
+
++2: first
+
+3: unexpected 'row'
++4: 42 pzr
+
+-4: kzr pzr
+
++5: kzr
+

judges/recodex_token_judge/tests/12-trailing-whitespace.bats

@@ -0,0 +1,15 @@
+#!/usr/bin/env bats
+
+load bats-shared
+
+@test "ignore trailing whitespace" {
+	run $EXE_FILE --ignore-trailing-whitespace $CORRECT_FILE $RESULT_FILE
+	[ "$status" -eq 0 ]
+	[ "${lines[0]}" -eq 1 ]
+}
+
+@test "ignore trailing whitespace (negative test)" {
+	run $EXE_FILE $CORRECT_FILE $RESULT_FILE
+	[ "$status" -eq 1 ]
+	echo "$output" | diff -abB - $ERROR_FILE
+}

judges/recodex_token_judge/tests/12.correct.in

@@ -0,0 +1 @@
+9 5 4 1 2 3 6 7 8 10

judges/recodex_token_judge/tests/12.error.out

@@ -0,0 +1,4 @@
+0
++2: 
++3: 
++4: 

judges/recodex_token_judge/tests/12.result.in

@@ -0,0 +1,4 @@
+9 5 4 1 2 3 6 7 8 10 
+
+
+