Package net.sf.saxon.regex
Class JDK14RegexTranslator
java.lang.Object
net.sf.saxon.regex.JDK14RegexTranslator
This class translates XML Schema regex syntax into JDK 1.4 regex syntax.
Author: James Clark
Modified by Michael Kay (a) to integrate the code into Saxon, and (b) to support XPath additions
to the XML Schema regex syntax.
This version of the regular expression translator treats each half of a surrogate pair as a separate
character, translating anything in an XPath regex that can match a non-BMP character into a Java
regex that matches the two halves of a surrogate pair independently. This approach doesn't work
under JDK 1.5, whose regex engine treats a surrogate pair as a single character.
The same translator is currently used for Saxon on .NET 1.1
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Nested Class Summary
Nested ClassesModifier and TypeClassDescription(package private) static class
(package private) static class
(package private) static class
(package private) static class
(package private) static class
(package private) static class
(package private) static class
(package private) static final class
(package private) static class
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Field Summary
FieldsModifier and TypeFieldDescription(package private) static final int
(package private) static final String
(package private) static final int[][]
(package private) static final String
(package private) static final String
(package private) static final String
(package private) static final String
(package private) static final String
(package private) static final String
(package private) static final int
(package private) static final String
(package private) static final int
(package private) static final String
(package private) static final String
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic void
void
setIgnoreWhitespace
(boolean ignore) translate
(CharSequence regExp, boolean xpath) Translates a regular expression in the syntax of XML Schemas Part 2 into a regular expression in the syntax ofjava.util.regex.Pattern
.
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Field Details
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CATEGORY_NAMES
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CATEGORY_RANGES
static final int[][] CATEGORY_RANGES -
NMSTRT_INCLUDES
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NMSTRT_EXCLUDE_RANGES
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NMSTRT_CATEGORIES
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NMCHAR_INCLUDES
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NMCHAR_EXCLUDE_RANGES
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NMCHAR_CATEGORIES
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NONE
static final int NONE- See Also:
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SOME
static final int SOME- See Also:
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ALL
static final int ALL- See Also:
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SURROGATES1_CLASS
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SURROGATES2_CLASS
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NOT_ALLOWED_CLASS
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Constructor Details
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JDK14RegexTranslator
public JDK14RegexTranslator()
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Method Details
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setIgnoreWhitespace
public void setIgnoreWhitespace(boolean ignore) -
translate
Translates a regular expression in the syntax of XML Schemas Part 2 into a regular expression in the syntax ofjava.util.regex.Pattern
. The translation assumes that the string to be matched against the regex uses surrogate pairs correctly. If the string comes from XML content, a conforming XML parser will automatically check this; if the string comes from elsewhere, it may be necessary to check surrogate usage before matching.- Parameters:
regExp
- a String containing a regular expression in the syntax of XML Schemas Part 2xpath
- a boolean indicating whether the XPath 2.0 F+O extensions to the schema regex syntax are permitted- Returns:
- a String containing a regular expression in the syntax of java.util.regex.Pattern
- Throws:
RegexSyntaxException
- ifregexp
is not a regular expression in the syntax of XML Schemas Part 2, or XPath 2.0, as appropriate- See Also:
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main
- Throws:
RegexSyntaxException
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