806 lines
31 KiB
Java
806 lines
31 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. 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 org.apache.commons.lang3;
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import java.io.IOException;
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import java.io.Writer;
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import org.apache.commons.lang3.text.translate.AggregateTranslator;
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import org.apache.commons.lang3.text.translate.CharSequenceTranslator;
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import org.apache.commons.lang3.text.translate.EntityArrays;
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import org.apache.commons.lang3.text.translate.JavaUnicodeEscaper;
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import org.apache.commons.lang3.text.translate.LookupTranslator;
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import org.apache.commons.lang3.text.translate.NumericEntityEscaper;
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import org.apache.commons.lang3.text.translate.NumericEntityUnescaper;
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import org.apache.commons.lang3.text.translate.OctalUnescaper;
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import org.apache.commons.lang3.text.translate.UnicodeUnescaper;
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import org.apache.commons.lang3.text.translate.UnicodeUnpairedSurrogateRemover;
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/**
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* <p>Escapes and unescapes {@code String}s for
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* Java, Java Script, HTML and XML.</p>
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*
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* <p>#ThreadSafe#</p>
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* @since 2.0
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* @deprecated as of 3.6, use commons-text
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* <a href="https://commons.apache.org/proper/commons-text/javadocs/api-release/org/apache/commons/text/StringEscapeUtils.html">
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* StringEscapeUtils</a> instead
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*/
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@Deprecated
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public class StringEscapeUtils {
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/* ESCAPE TRANSLATORS */
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/**
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* Translator object for escaping Java.
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*
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* While {@link #escapeJava(String)} is the expected method of use, this
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* object allows the Java escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator ESCAPE_JAVA =
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new LookupTranslator(
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new String[][] {
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{"\"", "\\\""},
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{"\\", "\\\\"},
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}).with(
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new LookupTranslator(EntityArrays.JAVA_CTRL_CHARS_ESCAPE())
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).with(
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JavaUnicodeEscaper.outsideOf(32, 0x7f)
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);
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/**
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* Translator object for escaping EcmaScript/JavaScript.
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*
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* While {@link #escapeEcmaScript(String)} is the expected method of use, this
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* object allows the EcmaScript escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator ESCAPE_ECMASCRIPT =
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new AggregateTranslator(
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new LookupTranslator(
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new String[][] {
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{"'", "\\'"},
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{"\"", "\\\""},
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{"\\", "\\\\"},
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{"/", "\\/"}
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}),
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new LookupTranslator(EntityArrays.JAVA_CTRL_CHARS_ESCAPE()),
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JavaUnicodeEscaper.outsideOf(32, 0x7f)
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);
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/**
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* Translator object for escaping Json.
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*
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* While {@link #escapeJson(String)} is the expected method of use, this
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* object allows the Json escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.2
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*/
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public static final CharSequenceTranslator ESCAPE_JSON =
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new AggregateTranslator(
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new LookupTranslator(
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new String[][] {
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{"\"", "\\\""},
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{"\\", "\\\\"},
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{"/", "\\/"}
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}),
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new LookupTranslator(EntityArrays.JAVA_CTRL_CHARS_ESCAPE()),
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JavaUnicodeEscaper.outsideOf(32, 0x7f)
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);
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/**
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* Translator object for escaping XML.
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*
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* While {@link #escapeXml(String)} is the expected method of use, this
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* object allows the XML escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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* @deprecated use {@link #ESCAPE_XML10} or {@link #ESCAPE_XML11} instead.
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*/
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@Deprecated
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public static final CharSequenceTranslator ESCAPE_XML =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_ESCAPE()),
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new LookupTranslator(EntityArrays.APOS_ESCAPE())
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);
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/**
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* Translator object for escaping XML 1.0.
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*
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* While {@link #escapeXml10(String)} is the expected method of use, this
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* object allows the XML escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.3
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*/
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public static final CharSequenceTranslator ESCAPE_XML10 =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_ESCAPE()),
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new LookupTranslator(EntityArrays.APOS_ESCAPE()),
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new LookupTranslator(
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new String[][] {
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{ "\u0000", StringUtils.EMPTY },
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{ "\u0001", StringUtils.EMPTY },
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{ "\u0002", StringUtils.EMPTY },
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{ "\u0003", StringUtils.EMPTY },
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{ "\u0004", StringUtils.EMPTY },
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{ "\u0005", StringUtils.EMPTY },
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{ "\u0006", StringUtils.EMPTY },
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{ "\u0007", StringUtils.EMPTY },
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{ "\u0008", StringUtils.EMPTY },
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{ "\u000b", StringUtils.EMPTY },
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{ "\u000c", StringUtils.EMPTY },
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{ "\u000e", StringUtils.EMPTY },
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{ "\u000f", StringUtils.EMPTY },
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{ "\u0010", StringUtils.EMPTY },
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{ "\u0011", StringUtils.EMPTY },
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{ "\u0012", StringUtils.EMPTY },
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{ "\u0013", StringUtils.EMPTY },
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{ "\u0014", StringUtils.EMPTY },
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{ "\u0015", StringUtils.EMPTY },
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{ "\u0016", StringUtils.EMPTY },
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{ "\u0017", StringUtils.EMPTY },
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{ "\u0018", StringUtils.EMPTY },
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{ "\u0019", StringUtils.EMPTY },
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{ "\u001a", StringUtils.EMPTY },
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{ "\u001b", StringUtils.EMPTY },
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{ "\u001c", StringUtils.EMPTY },
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{ "\u001d", StringUtils.EMPTY },
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{ "\u001e", StringUtils.EMPTY },
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{ "\u001f", StringUtils.EMPTY },
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{ "\ufffe", StringUtils.EMPTY },
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{ "\uffff", StringUtils.EMPTY }
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}),
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NumericEntityEscaper.between(0x7f, 0x84),
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NumericEntityEscaper.between(0x86, 0x9f),
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new UnicodeUnpairedSurrogateRemover()
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);
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/**
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* Translator object for escaping XML 1.1.
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*
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* While {@link #escapeXml11(String)} is the expected method of use, this
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* object allows the XML escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.3
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*/
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public static final CharSequenceTranslator ESCAPE_XML11 =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_ESCAPE()),
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new LookupTranslator(EntityArrays.APOS_ESCAPE()),
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new LookupTranslator(
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new String[][] {
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{ "\u0000", StringUtils.EMPTY },
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{ "\u000b", "" },
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{ "\u000c", "" },
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{ "\ufffe", StringUtils.EMPTY },
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{ "\uffff", StringUtils.EMPTY }
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}),
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NumericEntityEscaper.between(0x1, 0x8),
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NumericEntityEscaper.between(0xe, 0x1f),
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NumericEntityEscaper.between(0x7f, 0x84),
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NumericEntityEscaper.between(0x86, 0x9f),
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new UnicodeUnpairedSurrogateRemover()
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);
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/**
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* Translator object for escaping HTML version 3.0.
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*
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* While {@link #escapeHtml3(String)} is the expected method of use, this
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* object allows the HTML escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator ESCAPE_HTML3 =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_ESCAPE()),
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new LookupTranslator(EntityArrays.ISO8859_1_ESCAPE())
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);
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/**
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* Translator object for escaping HTML version 4.0.
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*
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* While {@link #escapeHtml4(String)} is the expected method of use, this
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* object allows the HTML escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator ESCAPE_HTML4 =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_ESCAPE()),
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new LookupTranslator(EntityArrays.ISO8859_1_ESCAPE()),
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new LookupTranslator(EntityArrays.HTML40_EXTENDED_ESCAPE())
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);
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/**
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* Translator object for escaping individual Comma Separated Values.
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*
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* While {@link #escapeCsv(String)} is the expected method of use, this
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* object allows the CSV escaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator ESCAPE_CSV = new CsvEscaper();
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// TODO: Create a parent class - 'SinglePassTranslator' ?
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// It would handle the index checking + length returning,
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// and could also have an optimization check method.
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static class CsvEscaper extends CharSequenceTranslator {
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private static final char CSV_DELIMITER = ',';
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private static final char CSV_QUOTE = '"';
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private static final String CSV_QUOTE_STR = String.valueOf(CSV_QUOTE);
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private static final char[] CSV_SEARCH_CHARS = { CSV_DELIMITER, CSV_QUOTE, CharUtils.CR, CharUtils.LF };
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@Override
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public int translate(final CharSequence input, final int index, final Writer out) throws IOException {
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if (index != 0) {
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throw new IllegalStateException("CsvEscaper should never reach the [1] index");
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}
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if (StringUtils.containsNone(input.toString(), CSV_SEARCH_CHARS)) {
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out.write(input.toString());
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} else {
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out.write(CSV_QUOTE);
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out.write(StringUtils.replace(input.toString(), CSV_QUOTE_STR, CSV_QUOTE_STR + CSV_QUOTE_STR));
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out.write(CSV_QUOTE);
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}
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return Character.codePointCount(input, 0, input.length());
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}
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}
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/* UNESCAPE TRANSLATORS */
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/**
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* Translator object for unescaping escaped Java.
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*
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* While {@link #unescapeJava(String)} is the expected method of use, this
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* object allows the Java unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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// TODO: throw "illegal character: \92" as an Exception if a \ on the end of the Java (as per the compiler)?
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public static final CharSequenceTranslator UNESCAPE_JAVA =
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new AggregateTranslator(
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new OctalUnescaper(), // .between('\1', '\377'),
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new UnicodeUnescaper(),
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new LookupTranslator(EntityArrays.JAVA_CTRL_CHARS_UNESCAPE()),
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new LookupTranslator(
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new String[][] {
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{"\\\\", "\\"},
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{"\\\"", "\""},
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{"\\'", "'"},
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{"\\", ""}
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})
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);
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/**
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* Translator object for unescaping escaped EcmaScript.
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*
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* While {@link #unescapeEcmaScript(String)} is the expected method of use, this
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* object allows the EcmaScript unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator UNESCAPE_ECMASCRIPT = UNESCAPE_JAVA;
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/**
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* Translator object for unescaping escaped Json.
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*
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* While {@link #unescapeJson(String)} is the expected method of use, this
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* object allows the Json unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.2
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*/
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public static final CharSequenceTranslator UNESCAPE_JSON = UNESCAPE_JAVA;
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/**
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* Translator object for unescaping escaped HTML 3.0.
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*
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* While {@link #unescapeHtml3(String)} is the expected method of use, this
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* object allows the HTML unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator UNESCAPE_HTML3 =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_UNESCAPE()),
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new LookupTranslator(EntityArrays.ISO8859_1_UNESCAPE()),
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new NumericEntityUnescaper()
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);
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/**
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* Translator object for unescaping escaped HTML 4.0.
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*
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* While {@link #unescapeHtml4(String)} is the expected method of use, this
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* object allows the HTML unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator UNESCAPE_HTML4 =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_UNESCAPE()),
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new LookupTranslator(EntityArrays.ISO8859_1_UNESCAPE()),
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new LookupTranslator(EntityArrays.HTML40_EXTENDED_UNESCAPE()),
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new NumericEntityUnescaper()
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);
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/**
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* Translator object for unescaping escaped XML.
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*
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* While {@link #unescapeXml(String)} is the expected method of use, this
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* object allows the XML unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator UNESCAPE_XML =
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new AggregateTranslator(
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new LookupTranslator(EntityArrays.BASIC_UNESCAPE()),
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new LookupTranslator(EntityArrays.APOS_UNESCAPE()),
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new NumericEntityUnescaper()
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);
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/**
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* Translator object for unescaping escaped Comma Separated Value entries.
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*
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* While {@link #unescapeCsv(String)} is the expected method of use, this
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* object allows the CSV unescaping functionality to be used
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* as the foundation for a custom translator.
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*
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* @since 3.0
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*/
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public static final CharSequenceTranslator UNESCAPE_CSV = new CsvUnescaper();
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static class CsvUnescaper extends CharSequenceTranslator {
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private static final char CSV_DELIMITER = ',';
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private static final char CSV_QUOTE = '"';
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private static final String CSV_QUOTE_STR = String.valueOf(CSV_QUOTE);
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private static final char[] CSV_SEARCH_CHARS = {CSV_DELIMITER, CSV_QUOTE, CharUtils.CR, CharUtils.LF};
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@Override
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public int translate(final CharSequence input, final int index, final Writer out) throws IOException {
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if (index != 0) {
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throw new IllegalStateException("CsvUnescaper should never reach the [1] index");
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}
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if ( input.charAt(0) != CSV_QUOTE || input.charAt(input.length() - 1) != CSV_QUOTE ) {
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out.write(input.toString());
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return Character.codePointCount(input, 0, input.length());
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}
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// strip quotes
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final String quoteless = input.subSequence(1, input.length() - 1).toString();
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if ( StringUtils.containsAny(quoteless, CSV_SEARCH_CHARS) ) {
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// deal with escaped quotes; ie) ""
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out.write(StringUtils.replace(quoteless, CSV_QUOTE_STR + CSV_QUOTE_STR, CSV_QUOTE_STR));
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} else {
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out.write(input.toString());
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}
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return Character.codePointCount(input, 0, input.length());
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}
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}
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/* Helper functions */
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/**
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* <p>{@code StringEscapeUtils} instances should NOT be constructed in
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* standard programming.</p>
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*
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* <p>Instead, the class should be used as:</p>
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* <pre>StringEscapeUtils.escapeJava("foo");</pre>
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*
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* <p>This constructor is public to permit tools that require a JavaBean
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* instance to operate.</p>
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*/
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public StringEscapeUtils() {
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}
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// Java and JavaScript
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//--------------------------------------------------------------------------
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/**
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* <p>Escapes the characters in a {@code String} using Java String rules.</p>
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*
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* <p>Deals correctly with quotes and control-chars (tab, backslash, cr, ff, etc.) </p>
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*
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* <p>So a tab becomes the characters {@code '\\'} and
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* {@code 't'}.</p>
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*
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* <p>The only difference between Java strings and JavaScript strings
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* is that in JavaScript, a single quote and forward-slash (/) are escaped.</p>
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*
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* <p>Example:</p>
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* <pre>
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* input string: He didn't say, "Stop!"
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* output string: He didn't say, \"Stop!\"
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* </pre>
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*
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* @param input String to escape values in, may be null
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* @return String with escaped values, {@code null} if null string input
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*/
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public static final String escapeJava(final String input) {
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return ESCAPE_JAVA.translate(input);
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}
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/**
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* <p>Escapes the characters in a {@code String} using EcmaScript String rules.</p>
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* <p>Escapes any values it finds into their EcmaScript String form.
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* Deals correctly with quotes and control-chars (tab, backslash, cr, ff, etc.) </p>
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*
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* <p>So a tab becomes the characters {@code '\\'} and
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* {@code 't'}.</p>
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*
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* <p>The only difference between Java strings and EcmaScript strings
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* is that in EcmaScript, a single quote and forward-slash (/) are escaped.</p>
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*
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* <p>Note that EcmaScript is best known by the JavaScript and ActionScript dialects. </p>
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*
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* <p>Example:</p>
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* <pre>
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* input string: He didn't say, "Stop!"
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* output string: He didn\'t say, \"Stop!\"
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* </pre>
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*
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* @param input String to escape values in, may be null
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* @return String with escaped values, {@code null} if null string input
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*
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* @since 3.0
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*/
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public static final String escapeEcmaScript(final String input) {
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return ESCAPE_ECMASCRIPT.translate(input);
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}
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/**
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|
* <p>Escapes the characters in a {@code String} using Json String rules.</p>
|
|
* <p>Escapes any values it finds into their Json String form.
|
|
* Deals correctly with quotes and control-chars (tab, backslash, cr, ff, etc.) </p>
|
|
*
|
|
* <p>So a tab becomes the characters {@code '\\'} and
|
|
* {@code 't'}.</p>
|
|
*
|
|
* <p>The only difference between Java strings and Json strings
|
|
* is that in Json, forward-slash (/) is escaped.</p>
|
|
*
|
|
* <p>See http://www.ietf.org/rfc/rfc4627.txt for further details. </p>
|
|
*
|
|
* <p>Example:</p>
|
|
* <pre>
|
|
* input string: He didn't say, "Stop!"
|
|
* output string: He didn't say, \"Stop!\"
|
|
* </pre>
|
|
*
|
|
* @param input String to escape values in, may be null
|
|
* @return String with escaped values, {@code null} if null string input
|
|
*
|
|
* @since 3.2
|
|
*/
|
|
public static final String escapeJson(final String input) {
|
|
return ESCAPE_JSON.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Unescapes any Java literals found in the {@code String}.
|
|
* For example, it will turn a sequence of {@code '\'} and
|
|
* {@code 'n'} into a newline character, unless the {@code '\'}
|
|
* is preceded by another {@code '\'}.</p>
|
|
*
|
|
* @param input the {@code String} to unescape, may be null
|
|
* @return a new unescaped {@code String}, {@code null} if null string input
|
|
*/
|
|
public static final String unescapeJava(final String input) {
|
|
return UNESCAPE_JAVA.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Unescapes any EcmaScript literals found in the {@code String}.</p>
|
|
*
|
|
* <p>For example, it will turn a sequence of {@code '\'} and {@code 'n'}
|
|
* into a newline character, unless the {@code '\'} is preceded by another
|
|
* {@code '\'}.</p>
|
|
*
|
|
* @see #unescapeJava(String)
|
|
* @param input the {@code String} to unescape, may be null
|
|
* @return A new unescaped {@code String}, {@code null} if null string input
|
|
*
|
|
* @since 3.0
|
|
*/
|
|
public static final String unescapeEcmaScript(final String input) {
|
|
return UNESCAPE_ECMASCRIPT.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Unescapes any Json literals found in the {@code String}.</p>
|
|
*
|
|
* <p>For example, it will turn a sequence of {@code '\'} and {@code 'n'}
|
|
* into a newline character, unless the {@code '\'} is preceded by another
|
|
* {@code '\'}.</p>
|
|
*
|
|
* @see #unescapeJava(String)
|
|
* @param input the {@code String} to unescape, may be null
|
|
* @return A new unescaped {@code String}, {@code null} if null string input
|
|
*
|
|
* @since 3.2
|
|
*/
|
|
public static final String unescapeJson(final String input) {
|
|
return UNESCAPE_JSON.translate(input);
|
|
}
|
|
|
|
// HTML and XML
|
|
//--------------------------------------------------------------------------
|
|
/**
|
|
* <p>Escapes the characters in a {@code String} using HTML entities.</p>
|
|
*
|
|
* <p>
|
|
* For example:
|
|
* </p>
|
|
* <p>{@code "bread" & "butter"}</p>
|
|
* becomes:
|
|
* <p>
|
|
* {@code &quot;bread&quot; &amp; &quot;butter&quot;}.
|
|
* </p>
|
|
*
|
|
* <p>Supports all known HTML 4.0 entities, including funky accents.
|
|
* Note that the commonly used apostrophe escape character (&apos;)
|
|
* is not a legal entity and so is not supported). </p>
|
|
*
|
|
* @param input the {@code String} to escape, may be null
|
|
* @return a new escaped {@code String}, {@code null} if null string input
|
|
*
|
|
* @see <a href="http://hotwired.lycos.com/webmonkey/reference/special_characters/">ISO Entities</a>
|
|
* @see <a href="http://www.w3.org/TR/REC-html32#latin1">HTML 3.2 Character Entities for ISO Latin-1</a>
|
|
* @see <a href="http://www.w3.org/TR/REC-html40/sgml/entities.html">HTML 4.0 Character entity references</a>
|
|
* @see <a href="http://www.w3.org/TR/html401/charset.html#h-5.3">HTML 4.01 Character References</a>
|
|
* @see <a href="http://www.w3.org/TR/html401/charset.html#code-position">HTML 4.01 Code positions</a>
|
|
*
|
|
* @since 3.0
|
|
*/
|
|
public static final String escapeHtml4(final String input) {
|
|
return ESCAPE_HTML4.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Escapes the characters in a {@code String} using HTML entities.</p>
|
|
* <p>Supports only the HTML 3.0 entities. </p>
|
|
*
|
|
* @param input the {@code String} to escape, may be null
|
|
* @return a new escaped {@code String}, {@code null} if null string input
|
|
*
|
|
* @since 3.0
|
|
*/
|
|
public static final String escapeHtml3(final String input) {
|
|
return ESCAPE_HTML3.translate(input);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
/**
|
|
* <p>Unescapes a string containing entity escapes to a string
|
|
* containing the actual Unicode characters corresponding to the
|
|
* escapes. Supports HTML 4.0 entities.</p>
|
|
*
|
|
* <p>For example, the string {@code "<Français>"}
|
|
* will become {@code "<Français>"}</p>
|
|
*
|
|
* <p>If an entity is unrecognized, it is left alone, and inserted
|
|
* verbatim into the result string. e.g. {@code ">&zzzz;x"} will
|
|
* become {@code ">&zzzz;x"}.</p>
|
|
*
|
|
* @param input the {@code String} to unescape, may be null
|
|
* @return a new unescaped {@code String}, {@code null} if null string input
|
|
*
|
|
* @since 3.0
|
|
*/
|
|
public static final String unescapeHtml4(final String input) {
|
|
return UNESCAPE_HTML4.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Unescapes a string containing entity escapes to a string
|
|
* containing the actual Unicode characters corresponding to the
|
|
* escapes. Supports only HTML 3.0 entities.</p>
|
|
*
|
|
* @param input the {@code String} to unescape, may be null
|
|
* @return a new unescaped {@code String}, {@code null} if null string input
|
|
*
|
|
* @since 3.0
|
|
*/
|
|
public static final String unescapeHtml3(final String input) {
|
|
return UNESCAPE_HTML3.translate(input);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
/**
|
|
* <p>Escapes the characters in a {@code String} using XML entities.</p>
|
|
*
|
|
* <p>For example: {@code "bread" & "butter"} =>
|
|
* {@code "bread" & "butter"}.
|
|
* </p>
|
|
*
|
|
* <p>Supports only the five basic XML entities (gt, lt, quot, amp, apos).
|
|
* Does not support DTDs or external entities.</p>
|
|
*
|
|
* <p>Note that Unicode characters greater than 0x7f are as of 3.0, no longer
|
|
* escaped. If you still wish this functionality, you can achieve it
|
|
* via the following:
|
|
* {@code StringEscapeUtils.ESCAPE_XML.with( NumericEntityEscaper.between(0x7f, Integer.MAX_VALUE) );}</p>
|
|
*
|
|
* @param input the {@code String} to escape, may be null
|
|
* @return a new escaped {@code String}, {@code null} if null string input
|
|
* @see #unescapeXml(java.lang.String)
|
|
* @deprecated use {@link #escapeXml10(java.lang.String)} or {@link #escapeXml11(java.lang.String)} instead.
|
|
*/
|
|
@Deprecated
|
|
public static final String escapeXml(final String input) {
|
|
return ESCAPE_XML.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Escapes the characters in a {@code String} using XML entities.</p>
|
|
*
|
|
* <p>For example: {@code "bread" & "butter"} =>
|
|
* {@code "bread" & "butter"}.
|
|
* </p>
|
|
*
|
|
* <p>Note that XML 1.0 is a text-only format: it cannot represent control
|
|
* characters or unpaired Unicode surrogate codepoints, even after escaping.
|
|
* {@code escapeXml10} will remove characters that do not fit in the
|
|
* following ranges:</p>
|
|
*
|
|
* <p>{@code #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]}</p>
|
|
*
|
|
* <p>Though not strictly necessary, {@code escapeXml10} will escape
|
|
* characters in the following ranges:</p>
|
|
*
|
|
* <p>{@code [#x7F-#x84] | [#x86-#x9F]}</p>
|
|
*
|
|
* <p>The returned string can be inserted into a valid XML 1.0 or XML 1.1
|
|
* document. If you want to allow more non-text characters in an XML 1.1
|
|
* document, use {@link #escapeXml11(String)}.</p>
|
|
*
|
|
* @param input the {@code String} to escape, may be null
|
|
* @return a new escaped {@code String}, {@code null} if null string input
|
|
* @see #unescapeXml(java.lang.String)
|
|
* @since 3.3
|
|
*/
|
|
public static String escapeXml10(final String input) {
|
|
return ESCAPE_XML10.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Escapes the characters in a {@code String} using XML entities.</p>
|
|
*
|
|
* <p>For example: {@code "bread" & "butter"} =>
|
|
* {@code "bread" & "butter"}.
|
|
* </p>
|
|
*
|
|
* <p>XML 1.1 can represent certain control characters, but it cannot represent
|
|
* the null byte or unpaired Unicode surrogate codepoints, even after escaping.
|
|
* {@code escapeXml11} will remove characters that do not fit in the following
|
|
* ranges:</p>
|
|
*
|
|
* <p>{@code [#x1-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]}</p>
|
|
*
|
|
* <p>{@code escapeXml11} will escape characters in the following ranges:</p>
|
|
*
|
|
* <p>{@code [#x1-#x8] | [#xB-#xC] | [#xE-#x1F] | [#x7F-#x84] | [#x86-#x9F]}</p>
|
|
*
|
|
* <p>The returned string can be inserted into a valid XML 1.1 document. Do not
|
|
* use it for XML 1.0 documents.</p>
|
|
*
|
|
* @param input the {@code String} to escape, may be null
|
|
* @return a new escaped {@code String}, {@code null} if null string input
|
|
* @see #unescapeXml(java.lang.String)
|
|
* @since 3.3
|
|
*/
|
|
public static String escapeXml11(final String input) {
|
|
return ESCAPE_XML11.translate(input);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
/**
|
|
* <p>Unescapes a string containing XML entity escapes to a string
|
|
* containing the actual Unicode characters corresponding to the
|
|
* escapes.</p>
|
|
*
|
|
* <p>Supports only the five basic XML entities (gt, lt, quot, amp, apos).
|
|
* Does not support DTDs or external entities.</p>
|
|
*
|
|
* <p>Note that numerical \\u Unicode codes are unescaped to their respective
|
|
* Unicode characters. This may change in future releases. </p>
|
|
*
|
|
* @param input the {@code String} to unescape, may be null
|
|
* @return a new unescaped {@code String}, {@code null} if null string input
|
|
* @see #escapeXml(String)
|
|
* @see #escapeXml10(String)
|
|
* @see #escapeXml11(String)
|
|
*/
|
|
public static final String unescapeXml(final String input) {
|
|
return UNESCAPE_XML.translate(input);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------
|
|
|
|
/**
|
|
* <p>Returns a {@code String} value for a CSV column enclosed in double quotes,
|
|
* if required.</p>
|
|
*
|
|
* <p>If the value contains a comma, newline or double quote, then the
|
|
* String value is returned enclosed in double quotes.</p>
|
|
*
|
|
* <p>Any double quote characters in the value are escaped with another double quote.</p>
|
|
*
|
|
* <p>If the value does not contain a comma, newline or double quote, then the
|
|
* String value is returned unchanged.</p>
|
|
*
|
|
* see <a href="http://en.wikipedia.org/wiki/Comma-separated_values">Wikipedia</a> and
|
|
* <a href="http://tools.ietf.org/html/rfc4180">RFC 4180</a>.
|
|
*
|
|
* @param input the input CSV column String, may be null
|
|
* @return the input String, enclosed in double quotes if the value contains a comma,
|
|
* newline or double quote, {@code null} if null string input
|
|
* @since 2.4
|
|
*/
|
|
public static final String escapeCsv(final String input) {
|
|
return ESCAPE_CSV.translate(input);
|
|
}
|
|
|
|
/**
|
|
* <p>Returns a {@code String} value for an unescaped CSV column. </p>
|
|
*
|
|
* <p>If the value is enclosed in double quotes, and contains a comma, newline
|
|
* or double quote, then quotes are removed.
|
|
* </p>
|
|
*
|
|
* <p>Any double quote escaped characters (a pair of double quotes) are unescaped
|
|
* to just one double quote. </p>
|
|
*
|
|
* <p>If the value is not enclosed in double quotes, or is and does not contain a
|
|
* comma, newline or double quote, then the String value is returned unchanged.</p>
|
|
*
|
|
* see <a href="http://en.wikipedia.org/wiki/Comma-separated_values">Wikipedia</a> and
|
|
* <a href="http://tools.ietf.org/html/rfc4180">RFC 4180</a>.
|
|
*
|
|
* @param input the input CSV column String, may be null
|
|
* @return the input String, with enclosing double quotes removed and embedded double
|
|
* quotes unescaped, {@code null} if null string input
|
|
* @since 2.4
|
|
*/
|
|
public static final String unescapeCsv(final String input) {
|
|
return UNESCAPE_CSV.translate(input);
|
|
}
|
|
|
|
}
|