SkXMLParser Class Reference

#include <SkXMLParser.h>

Inheritance diagram for SkXMLParser:

Public Member Functions
	SkXMLParser (SkXMLParserError *parserError=nullptr)
virtual	~SkXMLParser ()
bool	parse (const char doc[], size_t len)
bool	parse (SkStream &docStream)
bool	parse (const SkDOM &, const SkDOMNode *)
bool	startElement (const char elem[])
bool	addAttribute (const char name[], const char value[])
bool	endElement (const char elem[])
bool	text (const char text[], int len)

Static Public Member Functions
static void	GetNativeErrorString (int nativeErrorCode, SkString *str)

Public Attributes
void *	fParser

Protected Member Functions
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)

Protected Attributes
SkXMLParserError *	fError

Detailed Description

Definition at line 54 of file SkXMLParser.h.

Constructor & Destructor Documentation

SkXMLParser()

SkXMLParser::SkXMLParser

(

SkXMLParserError *

parserError = nullptr

)

Definition at line 136 of file SkXMLParser.cpp.

                                                      : fParser(nullptr), fError(parserError)
{
}

~SkXMLParser()

SkXMLParser::~SkXMLParser ( )

virtual

Definition at line 140 of file SkXMLParser.cpp.

{
}

Member Function Documentation

addAttribute()

bool SkXMLParser::addAttribute	(	const char	name[],
		const char	value[]
	)

Definition at line 221 of file SkXMLParser.cpp.

{
    return this->onAddAttribute(name, value);
}

endElement()

bool SkXMLParser::endElement

(

const char

elem[]

)

Definition at line 226 of file SkXMLParser.cpp.

{
    return this->onEndElement(elem);
}

GetNativeErrorString()

void SkXMLParser::GetNativeErrorString ( int  nativeErrorCode, SkString *  str  )

static

Definition at line 211 of file SkXMLParser.cpp.

{
 
}

onAddAttribute()

bool SkXMLParser::onAddAttribute ( const char  name[], const char  value[]  )

protectedvirtual

Reimplemented in SkDOMParser.

Definition at line 239 of file SkXMLParser.cpp.

{return false; }

onEndElement()

bool SkXMLParser::onEndElement ( const char  elem[] )

protectedvirtual

Reimplemented in SkDOMParser.

Definition at line 240 of file SkXMLParser.cpp.

{ return false; }

onStartElement()

bool SkXMLParser::onStartElement ( const char  elem[] )

protectedvirtual

Reimplemented in SkDOMParser.

Definition at line 238 of file SkXMLParser.cpp.

{return false; }

onText()

bool SkXMLParser::onText ( const char  text[], int  len  )

protectedvirtual

Reimplemented in SkDOMParser.

Definition at line 241 of file SkXMLParser.cpp.

{return false; }

parse() [1/3]

bool SkXMLParser::parse	(	const char	doc[],
		size_t	len
	)

Returns true for success

Definition at line 205 of file SkXMLParser.cpp.

{
    SkMemoryStream docStream(doc, len);
    return this->parse(docStream);
}

parse() [2/3]

bool SkXMLParser::parse	(	const SkDOM &	dom,
		const SkDOMNode *	node
	)

Definition at line 17 of file SkDOM.cpp.

                                                               {
    const char* elemName = dom.getName(node);
 
    if (this->startElement(elemName)) {
        return false;
    }
 
    SkDOM::AttrIter iter(dom, node);
    const char*     name, *value;
 
    while ((name = iter.next(&value)) != nullptr) {
        if (this->addAttribute(name, value)) {
            return false;
        }
    }
 
    if ((node = dom.getFirstChild(node)) != nullptr) {
        do {
            if (!this->parse(dom, node)) {
                return false;
            }
        } while ((node = dom.getNextSibling(node)) != nullptr);
    }
    return !this->endElement(elemName);
}

parse() [3/3]

bool SkXMLParser::parse

(

SkStream &

docStream

)

Definition at line 144 of file SkXMLParser.cpp.

{
    ParsingContext ctx(this);
    if (!ctx.fXMLParser) {
        SkDEBUGF("could not create XML parser\n");
        return false;
    }
 
    // Avoid calls to rand_s if this is not set. This seed helps prevent DOS
    // with a known hash sequence so an address is sufficient. The provided
    // seed should not be zero as that results in a call to rand_s.
    unsigned long seed = static_cast<unsigned long>(
        reinterpret_cast<size_t>(kHashSeed) & 0xFFFFFFFF);
    XML_SetHashSalt(ctx.fXMLParser, seed ? seed : 1);
 
    XML_SetUserData(ctx.fXMLParser, &ctx);
    XML_SetElementHandler(ctx.fXMLParser, start_element_handler, end_element_handler);
    XML_SetCharacterDataHandler(ctx.fXMLParser, text_handler);
 
    // Disable entity processing, to inhibit internal entity expansion. See expat CVE-2013-0340.
    XML_SetEntityDeclHandler(ctx.fXMLParser, entity_decl_handler);
 
    XML_Status status = XML_STATUS_OK;
    if (docStream.getMemoryBase() && docStream.hasLength()) {
        const char* base = reinterpret_cast<const char*>(docStream.getMemoryBase());
        status = XML_Parse(ctx.fXMLParser,
                           base + docStream.getPosition(),
                           docStream.getLength() - docStream.getPosition(),
                           true);
    } else {
        static constexpr int kBufferSize = 4096;
        bool done = false;
        do {
            void* buffer = XML_GetBuffer(ctx.fXMLParser, kBufferSize);
            if (!buffer) {
                SkDEBUGF("could not buffer enough to continue\n");
                return false;
            }
 
            size_t len = docStream.read(buffer, kBufferSize);
            done = docStream.isAtEnd();
            status = XML_ParseBuffer(ctx.fXMLParser, SkToS32(len), done);
            if (XML_STATUS_ERROR == status) {
                break;
            }
        } while (!done);
    }
    if (XML_STATUS_ERROR == status) {
#if defined(SK_DEBUG)
        XML_Error error = XML_GetErrorCode(ctx.fXMLParser);
        int line = XML_GetCurrentLineNumber(ctx.fXMLParser);
        int column = XML_GetCurrentColumnNumber(ctx.fXMLParser);
        const XML_LChar* errorString = XML_ErrorString(error);
        SkDEBUGF("parse error @%d:%d: %d (%s).\n", line, column, error, errorString);
#endif
        return false;
    }
 
    return true;
}

startElement()

bool SkXMLParser::startElement

(

const char

elem[]

)

Definition at line 216 of file SkXMLParser.cpp.

{
    return this->onStartElement(elem);
}

text()

bool SkXMLParser::text	(	const char	text[],
		int	len
	)

Definition at line 231 of file SkXMLParser.cpp.

{
    return this->onText(text, len);
}

Member Data Documentation

fError

SkXMLParserError* SkXMLParser::fError

protected

Definition at line 82 of file SkXMLParser.h.

fParser

void* SkXMLParser::fParser

Definition at line 80 of file SkXMLParser.h.

---

The documentation for this class was generated from the following files:

• third_party/skia/src/xml/SkXMLParser.h
• third_party/skia/src/xml/SkDOM.cpp
• third_party/skia/src/xml/SkXMLParser.cpp