99 lines
3.5 KiB
Java
99 lines
3.5 KiB
Java
/*
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* Copyright (C) 2009 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.escape;
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import com.google.common.annotations.GwtCompatible;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.escape.testing.EscaperAsserts;
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import java.io.IOException;
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import junit.framework.TestCase;
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/** @author David Beaumont */
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@GwtCompatible
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public class ArrayBasedCharEscaperTest extends TestCase {
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private static final ImmutableMap<Character, String> NO_REPLACEMENTS = ImmutableMap.of();
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private static final ImmutableMap<Character, String> SIMPLE_REPLACEMENTS =
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ImmutableMap.of(
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'\n', "<newline>",
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'\t', "<tab>",
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'&', "<and>");
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public void testSafeRange() throws IOException {
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// Basic escaping of unsafe chars (wrap them in {,}'s)
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CharEscaper wrappingEscaper =
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new ArrayBasedCharEscaper(NO_REPLACEMENTS, 'A', 'Z') {
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@Override
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protected char[] escapeUnsafe(char c) {
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return ("{" + c + "}").toCharArray();
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}
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};
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EscaperAsserts.assertBasic(wrappingEscaper);
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// '[' and '@' lie either side of [A-Z].
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assertEquals("{[}FOO{@}BAR{]}", wrappingEscaper.escape("[FOO@BAR]"));
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}
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public void testSafeRange_maxLessThanMin() throws IOException {
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// Basic escaping of unsafe chars (wrap them in {,}'s)
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CharEscaper wrappingEscaper =
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new ArrayBasedCharEscaper(NO_REPLACEMENTS, 'Z', 'A') {
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@Override
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protected char[] escapeUnsafe(char c) {
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return ("{" + c + "}").toCharArray();
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}
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};
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EscaperAsserts.assertBasic(wrappingEscaper);
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// escape everything.
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assertEquals("{[}{F}{O}{O}{]}", wrappingEscaper.escape("[FOO]"));
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}
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public void testDeleteUnsafeChars() throws IOException {
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CharEscaper deletingEscaper =
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new ArrayBasedCharEscaper(NO_REPLACEMENTS, ' ', '~') {
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private final char[] noChars = new char[0];
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@Override
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protected char[] escapeUnsafe(char c) {
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return noChars;
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}
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};
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EscaperAsserts.assertBasic(deletingEscaper);
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assertEquals(
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"Everything outside the printable ASCII range is deleted.",
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deletingEscaper.escape(
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"\tEverything\0 outside the\uD800\uDC00 "
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+ "printable ASCII \uFFFFrange is \u007Fdeleted.\n"));
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}
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public void testReplacementPriority() throws IOException {
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CharEscaper replacingEscaper =
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new ArrayBasedCharEscaper(SIMPLE_REPLACEMENTS, ' ', '~') {
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private final char[] unknown = new char[] {'?'};
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@Override
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protected char[] escapeUnsafe(char c) {
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return unknown;
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}
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};
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EscaperAsserts.assertBasic(replacingEscaper);
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// Replacements are applied first regardless of whether the character is in
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// the safe range or not ('&' is a safe char while '\t' and '\n' are not).
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assertEquals(
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"<tab>Fish <and>? Chips?<newline>", replacingEscaper.escape("\tFish &\0 Chips\r\n"));
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}
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}
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