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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SkXMLParser_DEFINED
#define SkXMLParser_DEFINED
#include "SkMath.h"
#include "SkString.h"
class SkStream;
class SkDOM;
struct SkDOMNode;
class SkXMLParserError {
public:
enum ErrorCode {
kNoError,
kEmptyFile,
kUnknownElement,
kUnknownAttributeName,
kErrorInAttributeValue,
kDuplicateIDs,
kUnknownError
};
SkXMLParserError();
virtual ~SkXMLParserError();
ErrorCode getErrorCode() const { return fCode; }
virtual void getErrorString(SkString* str) const;
int getLineNumber() const { return fLineNumber; }
int getNativeCode() const { return fNativeCode; }
bool hasError() const { return fCode != kNoError || fNativeCode != -1; }
bool hasNoun() const { return fNoun.size() > 0; }
void reset();
void setCode(ErrorCode code) { fCode = code; }
void setNoun(const SkString& str) { fNoun.set(str); }
void setNoun(const char* ch) { fNoun.set(ch); }
void setNoun(const char* ch, size_t len) { fNoun.set(ch, len); }
protected:
ErrorCode fCode;
private:
int fLineNumber;
int fNativeCode;
SkString fNoun;
friend class SkXMLParser;
};
class SkXMLParser {
public:
SkXMLParser(SkXMLParserError* parserError = NULL);
virtual ~SkXMLParser();
/** Returns true for success
*/
bool parse(const char doc[], size_t len);
bool parse(SkStream& docStream);
bool parse(const SkDOM&, const SkDOMNode*);
static void GetNativeErrorString(int nativeErrorCode, SkString* str);
protected:
// override in subclasses; return true to stop parsing
virtual bool onStartElement(const char elem[]);
virtual bool onAddAttribute(const char name[], const char value[]);
virtual bool onEndElement(const char elem[]);
virtual bool onText(const char text[], int len);
public:
// public for ported implementation, not meant for clients to call
virtual bool startElement(const char elem[]);
virtual bool addAttribute(const char name[], const char value[]);
virtual bool endElement(const char elem[]);
virtual bool text(const char text[], int len);
void* fParser;
protected:
SkXMLParserError* fError;
private:
void reportError(void* parser);
};
#if 0
class SkXMLPullParser {
public:
SkXMLPullParser();
explicit SkXMLPullParser(SkStream*);
virtual ~SkXMLPullParser();
SkStream* getStream() const { return fStream; }
SkStream* setStream(SkStream* stream);
enum EventType {
ERROR = -1,
START_DOCUMENT,
END_DOCUMENT,
START_TAG,
END_TAG,
TEXT,
CDSECT,
ENTITY_REF,
IGNORABLE_WHITESPACE,
PROCESSING_INSTRUCTION,
COMMENT,
DOCDECL
};
EventType nextToken();
EventType getEventType() const { return fCurr.fEventType; }
struct AttrInfo {
const char* fName;
const char* fValue;
};
int getDepth() const { return fDepth; }
const char* getName();
int getAttributeCount();
void getAttributeInfo(int, AttrInfo*);
const char* getText();
bool isWhitespace();
protected:
virtual bool onEntityReplacement(const char name[],
SkString* replacement);
public:
struct Curr {
EventType fEventType;
const char* fName;
AttrInfo* fAttrInfos;
int fAttrInfoCount;
bool fIsWhitespace;
};
private:
// implemented in the porting layer
bool onInit(); // return false on failure
EventType onNextToken();
void onExit();
SkStream* fStream;
Curr fCurr;
int fDepth;
struct Impl;
Impl* fImpl;
};
#endif
#endif
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