184f6282e8
X-SVN-Rev: 17547
243 lines
8.5 KiB
C++
243 lines
8.5 KiB
C++
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2004-2005, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: xmlparser.h
|
|
* encoding: US-ASCII
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2004jul21
|
|
* created by: Andy Heninger
|
|
*
|
|
* Tiny XML parser using ICU and intended for use in ICU tests and in build tools.
|
|
* Not suitable for production use. Not supported.
|
|
* Not conformant. Not efficient.
|
|
* But very small.
|
|
*/
|
|
|
|
#ifndef __XMLPARSER_H__
|
|
#define __XMLPARSER_H__
|
|
|
|
#include "unicode/uobject.h"
|
|
#include "unicode/unistr.h"
|
|
#include "unicode/regex.h"
|
|
#include "uvector.h"
|
|
#include "hash.h"
|
|
|
|
enum UXMLNodeType {
|
|
/** Node type string (text contents), stored as a UnicodeString. */
|
|
UXML_NODE_TYPE_STRING,
|
|
/** Node type element, stored as a UXMLElement. */
|
|
UXML_NODE_TYPE_ELEMENT,
|
|
UXML_NODE_TYPE_COUNT
|
|
};
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
class UXMLParser;
|
|
|
|
/**
|
|
* This class represents an element node in a parsed XML tree.
|
|
*/
|
|
class U_TOOLUTIL_API UXMLElement : public UObject {
|
|
public:
|
|
/**
|
|
* Destructor.
|
|
*/
|
|
virtual ~UXMLElement();
|
|
|
|
/**
|
|
* Get the tag name of this element.
|
|
*/
|
|
const UnicodeString &getTagName() const;
|
|
/**
|
|
* Get the text contents of the element.
|
|
* Append the contents of all text child nodes.
|
|
* @param recurse If TRUE, also recursively appends the contents of all
|
|
* text child nodes of element children.
|
|
* @return The text contents.
|
|
*/
|
|
UnicodeString getText(UBool recurse) const;
|
|
/**
|
|
* Get the number of attributes.
|
|
*/
|
|
int32_t countAttributes() const;
|
|
/**
|
|
* Get the i-th attribute.
|
|
* @param i Index of the attribute.
|
|
* @param name Output parameter, receives the attribute name.
|
|
* @param value Output parameter, receives the attribute value.
|
|
* @return A pointer to the attribute value (may be &value or a pointer to an
|
|
* internal string object), or NULL if i is out of bounds.
|
|
*/
|
|
const UnicodeString *getAttribute(int32_t i, UnicodeString &name, UnicodeString &value) const;
|
|
/**
|
|
* Get the value of the attribute with the given name.
|
|
* @param name Attribute name to be looked up.
|
|
* @return A pointer to the attribute value, or NULL if this element
|
|
* does not have this attribute.
|
|
*/
|
|
const UnicodeString *getAttribute(const UnicodeString &name) const;
|
|
/**
|
|
* Get the number of child nodes.
|
|
*/
|
|
int32_t countChildren() const;
|
|
/**
|
|
* Get the i-th child node.
|
|
* @param i Index of the child node.
|
|
* @param type The child node type.
|
|
* @return A pointer to the child node object, or NULL if i is out of bounds.
|
|
*/
|
|
const UObject *getChild(int32_t i, UXMLNodeType &type) const;
|
|
/**
|
|
* Get the next child element node, skipping non-element child nodes.
|
|
* @param i Enumeration index; initialize to 0 before getting the first child element.
|
|
* @return A pointer to the next child element, or NULL if there is none.
|
|
*/
|
|
const UXMLElement *nextChildElement(int32_t &i) const;
|
|
/**
|
|
* Get the immediate child element with the given name.
|
|
* If there are multiple child elements with this name, then return
|
|
* the first one.
|
|
* @param name Element name to be looked up.
|
|
* @return A pointer to the element node, or NULL if this element
|
|
* does not have this immediate child element.
|
|
*/
|
|
const UXMLElement *getChildElement(const UnicodeString &name) const;
|
|
|
|
/**
|
|
* ICU "poor man's RTTI", returns a UClassID for the actual class.
|
|
*/
|
|
virtual UClassID getDynamicClassID() const;
|
|
|
|
/**
|
|
* ICU "poor man's RTTI", returns a UClassID for this class.
|
|
*/
|
|
static UClassID U_EXPORT2 getStaticClassID();
|
|
|
|
private:
|
|
// prevent default construction etc.
|
|
UXMLElement();
|
|
UXMLElement(const UXMLElement &other);
|
|
UXMLElement &operator=(const UXMLElement &other);
|
|
|
|
void appendText(UnicodeString &text, UBool recurse) const;
|
|
|
|
friend class UXMLParser;
|
|
|
|
UXMLElement(const UXMLParser *parser, const UnicodeString *name, UErrorCode &errorCode);
|
|
|
|
const UXMLParser *fParser;
|
|
const UnicodeString *fName; // The tag name of this element (owned by the UXMLParser)
|
|
UnicodeString fContent; // The text content of this node. All element content is
|
|
// concatenated even when there are intervening nested elements
|
|
// (which doesn't happen with most xml files we care about)
|
|
// Sections of content containing only white space are dropped,
|
|
// which gets rid the bogus white space content from
|
|
// elements which are primarily containers for nested elements.
|
|
UVector fAttNames; // A vector containing the names of this element's attributes
|
|
// The names are UnicodeString objects, owned by the UXMLParser.
|
|
UVector fAttValues; // A vector containing the attribute values for
|
|
// this element's attributes. The order is the same
|
|
// as that of the attribute name vector.
|
|
|
|
UVector fChildren; // The child nodes of this element (a Vector)
|
|
|
|
UXMLElement *fParent; // A pointer to the parent element of this element.
|
|
};
|
|
|
|
/**
|
|
* A simple XML parser; it is neither efficient nor conformant and only useful for
|
|
* restricted types of XML documents.
|
|
*
|
|
* The parse methods parse whole documents and return the parse trees via their
|
|
* root elements.
|
|
*/
|
|
class U_TOOLUTIL_API UXMLParser : public UObject {
|
|
public:
|
|
/**
|
|
* Create an XML parser.
|
|
*/
|
|
static UXMLParser *createParser(UErrorCode &errorCode);
|
|
/**
|
|
* Destructor.
|
|
*/
|
|
virtual ~UXMLParser();
|
|
|
|
/**
|
|
* Parse an XML document, create the entire document tree, and
|
|
* return a pointer to the root element of the parsed tree.
|
|
* The caller must delete the element.
|
|
*/
|
|
UXMLElement *parse(const UnicodeString &src, UErrorCode &errorCode);
|
|
/**
|
|
* Parse an XML file, create the entire document tree, and
|
|
* return a pointer to the root element of the parsed tree.
|
|
* The caller must delete the element.
|
|
*/
|
|
UXMLElement *parseFile(const char *filename, UErrorCode &errorCode);
|
|
|
|
/**
|
|
* ICU "poor man's RTTI", returns a UClassID for the actual class.
|
|
*/
|
|
virtual UClassID getDynamicClassID() const;
|
|
|
|
/**
|
|
* ICU "poor man's RTTI", returns a UClassID for this class.
|
|
*/
|
|
static UClassID U_EXPORT2 getStaticClassID();
|
|
|
|
private:
|
|
// prevent default construction etc.
|
|
UXMLParser();
|
|
UXMLParser(const UXMLParser &other);
|
|
UXMLParser &operator=(const UXMLParser &other);
|
|
|
|
// constructor
|
|
UXMLParser(UErrorCode &status);
|
|
|
|
void parseMisc(UErrorCode &status);
|
|
UXMLElement *createElement(RegexMatcher &mEl, UErrorCode &status);
|
|
void error(const char *message, UErrorCode &status);
|
|
UnicodeString scanContent(UErrorCode &status);
|
|
void replaceCharRefs(UnicodeString &s, UErrorCode &status);
|
|
|
|
const UnicodeString *intern(const UnicodeString &s, UErrorCode &errorCode);
|
|
public:
|
|
// public for UXMLElement only
|
|
const UnicodeString *findName(const UnicodeString &s) const;
|
|
private:
|
|
|
|
// There is one ICU regex matcher for each of the major XML syntax items
|
|
// that are recognized.
|
|
RegexMatcher mXMLDecl;
|
|
RegexMatcher mXMLComment;
|
|
RegexMatcher mXMLSP;
|
|
RegexMatcher mXMLDoctype;
|
|
RegexMatcher mXMLPI;
|
|
RegexMatcher mXMLElemStart;
|
|
RegexMatcher mXMLElemEnd;
|
|
RegexMatcher mXMLElemEmpty;
|
|
RegexMatcher mXMLCharData;
|
|
RegexMatcher mAttrValue;
|
|
RegexMatcher mAttrNormalizer;
|
|
RegexMatcher mNewLineNormalizer;
|
|
RegexMatcher mAmps;
|
|
|
|
Hashtable fNames; // interned element/attribute name strings
|
|
UStack fElementStack; // Stack holds the parent elements when nested
|
|
// elements are being parsed. All items on this
|
|
// stack are of type UXMLElement.
|
|
int32_t fPos; // String index of the current scan position in
|
|
// xml source (in fSrc).
|
|
UnicodeString fOneLF;
|
|
};
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif
|