/usr/include/msn/xmlParser.h is in libmsn-dev 4.2.1+dfsg-1.
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****************************************************************************
* <P> XML.c - implementation file for basic XML parser written in ANSI C++
* for portability. It works by using recursion and a node tree for breaking
* down the elements of an XML document. </P>
*
* @version V2.29
* @author Frank Vanden Berghen
*
* BSD license:
* Copyright (c) 2002, Frank Vanden Berghen
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Frank Vanden Berghen nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************
*/
#ifndef __INCLUDE_XML_NODE__
#define __INCLUDE_XML_NODE__
#include <stdlib.h>
#ifdef _UNICODE
// If you comment the next "define" line then the library will never "switch to" _UNICODE (wchar_t*) mode (16/32 bits per characters).
// This is useful when you get error messages like:
// 'XMLNode::openFileHelper' : cannot convert parameter 2 from 'const char [5]' to 'const wchar_t *'
// The _XMLWIDECHAR preprocessor variable force the XMLParser library into either utf16/32-mode (the proprocessor variable
// must be defined) or utf8-mode(the pre-processor variable must be undefined).
#define _XMLWIDECHAR
#endif
#if defined(WIN32) || defined(UNDER_CE)
// comment the next line if you are under windows and the compiler is not Microsoft Visual Studio (6.0 or .NET)
#define _XMLWINDOWS
#endif
#ifdef XMLDLLENTRY
#undef XMLDLLENTRY
#endif
#ifdef _USE_XMLPARSER_DLL
#ifdef _DLL_EXPORTS_
#define XMLDLLENTRY __declspec(dllexport)
#else
#define XMLDLLENTRY __declspec(dllimport)
#endif
#else
#define XMLDLLENTRY
#endif
// uncomment the next line if you want no support for wchar_t* (no need for the <wchar.h> or <tchar.h> libraries anymore to compile)
//#define XML_NO_WIDE_CHAR
#ifdef XML_NO_WIDE_CHAR
#undef _XMLWINDOWS
#undef _XMLWIDECHAR
#endif
#ifdef _XMLWINDOWS
#include <tchar.h>
#else
#define XMLDLLENTRY
#ifndef XML_NO_WIDE_CHAR
#include <wchar.h> // to have 'wcsrtombs' for ANSI version
// to have 'mbsrtowcs' for WIDECHAR version
#endif
#endif
// Some common types for char set portable code
#ifdef _XMLWIDECHAR
#ifndef _T
#define _T(c) L ## c
#endif
#define XMLCSTR const wchar_t *
#define XMLSTR wchar_t *
#define XMLCHAR wchar_t
#else
#ifndef _T
#define _T(c) c
#endif
#define XMLCSTR const char *
#define XMLSTR char *
#define XMLCHAR char
#endif
#ifndef FALSE
#define FALSE 0
#endif /* FALSE */
#ifndef TRUE
#define TRUE 1
#endif /* TRUE */
// Enumeration for XML parse errors.
typedef enum XMLError
{
eXMLErrorNone = 0,
eXMLErrorMissingEndTag,
eXMLErrorEmpty,
eXMLErrorFirstNotStartTag,
eXMLErrorMissingTagName,
eXMLErrorMissingEndTagName,
eXMLErrorNoMatchingQuote,
eXMLErrorUnmatchedEndTag,
eXMLErrorUnmatchedEndClearTag,
eXMLErrorUnexpectedToken,
eXMLErrorInvalidTag,
eXMLErrorNoElements,
eXMLErrorFileNotFound,
eXMLErrorFirstTagNotFound,
eXMLErrorUnknownCharacterEntity,
eXMLErrorCharConversionError,
eXMLErrorCannotOpenWriteFile,
eXMLErrorCannotWriteFile,
eXMLErrorBase64DataSizeIsNotMultipleOf4,
eXMLErrorBase64DecodeIllegalCharacter,
eXMLErrorBase64DecodeTruncatedData,
eXMLErrorBase64DecodeBufferTooSmall
} XMLError;
// Enumeration used to manage type of data. Use in conjunction with structure XMLNodeContents
typedef enum XMLElementType
{
eNodeChild=0,
eNodeAttribute=1,
eNodeText=2,
eNodeClear=3,
eNodeNULL=4
} XMLElementType;
// Structure used to obtain error details if the parse fails.
typedef struct XMLResults
{
enum XMLError error;
int nLine,nColumn;
} XMLResults;
// Structure for XML clear (unformatted) node (usually comments)
typedef struct XMLClear {
XMLCSTR lpszValue; XMLCSTR lpszOpenTag; XMLCSTR lpszCloseTag;
} XMLClear;
// Structure for XML attribute.
typedef struct XMLAttribute {
XMLCSTR lpszName; XMLCSTR lpszValue;
} XMLAttribute;
struct XMLNodeContents;
typedef struct XMLDLLENTRY XMLNode
{
private:
struct XMLNodeDataTag;
// protected constructors: use one of these four methods to get your first instance of XMLNode:
// - parseString
// - parseFile
// - openFileHelper
// - createXMLTopNode
XMLNode(struct XMLNodeDataTag *pParent, XMLSTR lpszName, char isDeclaration);
XMLNode(struct XMLNodeDataTag *p);
public:
// You can create your first instance of XMLNode with these 4 functions:
// (see complete explanation of parameters below)
static XMLNode createXMLTopNode(XMLCSTR lpszName, char isDeclaration=FALSE);
static XMLNode parseString (XMLCSTR lpXMLString, XMLCSTR tag=NULL, XMLResults *pResults=NULL);
static XMLNode parseFile (XMLCSTR filename, XMLCSTR tag=NULL, XMLResults *pResults=NULL);
static XMLNode openFileHelper(XMLCSTR filename, XMLCSTR tag=NULL );
// The tag parameter should be the name of the first tag inside the XML file.
// If the tag parameter is omitted, the 3 functions return a node that represents
// the head of the xml document including the declaration term (<? ... ?>).
// The "openFileHelper" reports to the screen all the warnings & errors that occurred during
// parsing of the XML file. Since each application has its own way to report and deal with errors,
// you should rather use the "parseFile" function to parse XML files and program yourself thereafter
// an "error reporting" tailored for your needs (instead of using the very crude "error reporting"
// mechanism included inside the "openFileHelper" function).
// If the XML document is corrupted:
// * The "openFileHelper" method will:
// - display an error message on the console (or inside a messageBox for windows).
// - stop execution (exit).
// I suggest that you write your own "openFileHelper" method tailored to your needs.
// * The 2 other methods will initialize the "pResults" variable with some information that
// can be used to trace the error.
// * If you still want to parse the file, you can use the APPROXIMATE_PARSING option as
// explained inside the note at the beginning of the "xmlParser.cpp" file.
// You can have a user-friendly explanation of the parsing error with this function:
static XMLCSTR getError(XMLError error);
static XMLCSTR getVersion();
XMLCSTR getName() const; // name of the node
XMLCSTR getText(int i=0) const; // return ith text field
int nText() const; // nbr of text field
XMLNode getParentNode() const; // return the parent node
XMLNode getChildNode(int i=0) const; // return ith child node
XMLNode getChildNode(XMLCSTR name, int i) const; // return ith child node with specific name
// (return an empty node if failing)
XMLNode getChildNode(XMLCSTR name, int *i=NULL) const; // return next child node with specific name
// (return an empty node if failing)
XMLNode getChildNodeWithAttribute(XMLCSTR tagName, // return child node with specific name/attribute
XMLCSTR attributeName, // (return an empty node if failing)
XMLCSTR attributeValue=NULL, //
int *i=NULL) const; //
int nChildNode(XMLCSTR name) const; // return the number of child node with specific name
int nChildNode() const; // nbr of child node
XMLAttribute getAttribute(int i=0) const; // return ith attribute
XMLCSTR getAttributeName(int i=0) const; // return ith attribute name
XMLCSTR getAttributeValue(int i=0) const; // return ith attribute value
char isAttributeSet(XMLCSTR name) const; // test if an attribute with a specific name is given
XMLCSTR getAttribute(XMLCSTR name, int i) const; // return ith attribute content with specific name
// (return a NULL if failing)
XMLCSTR getAttribute(XMLCSTR name, int *i=NULL) const; // return next attribute content with specific name
// (return a NULL if failing)
int nAttribute() const; // nbr of attribute
XMLClear getClear(int i=0) const; // return ith clear field (comments)
int nClear() const; // nbr of clear field
XMLSTR createXMLString(int nFormat=1, int *pnSize=NULL) const; // create XML string starting from current XMLNode
// if nFormat==0, no formatting is required
// otherwise this returns an user friendly XML string from a
// given element with appropriate white spaces and carriage returns.
// if pnSize is given it returns the size in character of the string.
XMLError writeToFile(XMLCSTR filename, const char *encoding=NULL, char nFormat=1) const;
// Save the content of an xmlNode inside a file.
// The nFormat parameter has the same meaning as in the
// createXMLString function. If the global parameter
// "characterEncoding==encoding_UTF8", then the "encoding" parameter is
// ignored and always set to "utf-8". If the global parameter
// "characterEncoding==encoding_ShiftJIS", then the "encoding" parameter
// is ignored and always set to "SHIFT-JIS". If "_XMLWIDECHAR=1", then
// the "encoding" parameter is ignored and always set to "utf-16".
// If no "encoding" parameter is given the "ISO-8859-1" encoding is used.
XMLNodeContents enumContents(int i) const; // enumerate all the different contents (attribute,child,text,
// clear) of the current XMLNode. The order is reflecting
// the order of the original file/string.
// NOTE: 0 <= i < nElement();
int nElement() const; // nbr of different contents for current node
char isEmpty() const; // is this node Empty?
char isDeclaration() const; // is this node a declaration <? .... ?>
static XMLNode emptyNode(); // return XMLNode::emptyXMLNode;
// to allow shallow/fast copy:
~XMLNode();
XMLNode(const XMLNode &A);
XMLNode& operator=( const XMLNode& A );
XMLNode(): d(NULL){};
static XMLNode emptyXMLNode;
static XMLClear emptyXMLClear;
static XMLAttribute emptyXMLAttribute;
// The following functions allows you to create from scratch (or update) a XMLNode structure
// Start by creating your top node with the "createXMLTopNode" function and then add new nodes with the "addChild" function.
// The parameter 'pos' gives the position where the childNode, the text or the XMLClearTag will be inserted.
// The default value (pos=-1) inserts at the end. The value (pos=0) insert at the beginning (Insertion at the beginning is slower than at the end).
// REMARK: 0 <= pos < nChild()+nText()+nClear()
XMLNode addChild(XMLCSTR lpszName, char isDeclaration=FALSE, int pos=-1);
XMLAttribute *addAttribute(XMLCSTR lpszName, XMLCSTR lpszValuev);
XMLCSTR addText(XMLCSTR lpszValue, int pos=-1);
XMLClear *addClear(XMLCSTR lpszValue, XMLCSTR lpszOpen=NULL, XMLCSTR lpszClose=NULL, int pos=-1);
// default values: lpszOpen ="<![CDATA["
// lpszClose="]]>"
XMLNode addChild(XMLNode nodeToAdd, int pos=-1); // If the "nodeToAdd" has some parents, it will be detached
// from it's parents before being attached to the current XMLNode
// Some update functions:
XMLCSTR updateName(XMLCSTR lpszName); // change node's name
XMLAttribute *updateAttribute(XMLAttribute *newAttribute, XMLAttribute *oldAttribute); // if the attribute to update is missing, a new one will be added
XMLAttribute *updateAttribute(XMLCSTR lpszNewValue, XMLCSTR lpszNewName=NULL,int i=0); // if the attribute to update is missing, a new one will be added
XMLAttribute *updateAttribute(XMLCSTR lpszNewValue, XMLCSTR lpszNewName,XMLCSTR lpszOldName); // set lpszNewName=NULL if you don't want to change the name of the attribute
// if the attribute to update is missing, a new one will be added
XMLCSTR updateText(XMLCSTR lpszNewValue, int i=0); // if the text to update is missing, a new one will be added
XMLCSTR updateText(XMLCSTR lpszNewValue, XMLCSTR lpszOldValue); // if the text to update is missing, a new one will be added
XMLClear *updateClear(XMLCSTR lpszNewContent, int i=0); // if the clearTag to update is missing, a new one will be added
XMLClear *updateClear(XMLClear *newP,XMLClear *oldP); // if the clearTag to update is missing, a new one will be added
XMLClear *updateClear(XMLCSTR lpszNewValue, XMLCSTR lpszOldValue); // if the clearTag to update is missing, a new one will be added
// Some deletion functions:
void deleteNodeContent(char force=0); // delete the content of this XMLNode and the subtree.
// if force=0, while (references to this node still exist), no memory free occurs
// if force=1, always delete the content of this XMLNode and the subtree and free associated memory
void deleteAttribute(XMLCSTR lpszName);
void deleteAttribute(int i=0);
void deleteAttribute(XMLAttribute *anAttribute);
void deleteText(int i=0);
void deleteText(XMLCSTR lpszValue);
void deleteClear(int i=0);
void deleteClear(XMLClear *p);
void deleteClear(XMLCSTR lpszValue);
// The strings given as parameters for the following add and update methods (all these methods have
// a name with the postfix "_WOSD" that means "WithOut String Duplication" ) will be free'd by the
// XMLNode class. For example, it means that this is incorrect:
// xNode.addText_WOSD("foo");
// xNode.updateAttribute_WOSD("#newcolor" ,NULL,"color");
// In opposition, this is correct:
// xNode.addText("foo");
// xNode.addText_WOSD(stringDup("foo"));
// xNode.updateAttribute("#newcolor" ,NULL,"color");
// xNode.updateAttribute_WOSD(stringDup("#newcolor"),NULL,"color");
// Typically, you will never do:
// char *b=(char*)malloc(...);
// xNode.addText(b);
// free(b);
// ... but rather:
// char *b=(char*)malloc(...);
// xNode.addText_WOSD(b);
// ('free(b)' is performed by the XMLNode class)
static XMLNode createXMLTopNode_WOSD(XMLSTR lpszName, char isDeclaration=FALSE);
XMLNode addChild_WOSD(XMLSTR lpszName, char isDeclaration=FALSE, int pos=-1);
XMLAttribute *addAttribute_WOSD(XMLSTR lpszName, XMLSTR lpszValue);
XMLCSTR addText_WOSD(XMLSTR lpszValue, int pos=-1);
XMLClear *addClear_WOSD(XMLSTR lpszValue, XMLCSTR lpszOpen=NULL, XMLCSTR lpszClose=NULL, int pos=-1);
XMLCSTR updateName_WOSD(XMLSTR lpszName);
XMLAttribute *updateAttribute_WOSD(XMLAttribute *newAttribute, XMLAttribute *oldAttribute);
XMLAttribute *updateAttribute_WOSD(XMLSTR lpszNewValue, XMLSTR lpszNewName=NULL,int i=0);
XMLAttribute *updateAttribute_WOSD(XMLSTR lpszNewValue, XMLSTR lpszNewName,XMLCSTR lpszOldName);
XMLCSTR updateText_WOSD(XMLSTR lpszNewValue, int i=0);
XMLCSTR updateText_WOSD(XMLSTR lpszNewValue, XMLCSTR lpszOldValue);
XMLClear *updateClear_WOSD(XMLSTR lpszNewContent, int i=0);
XMLClear *updateClear_WOSD(XMLClear *newP,XMLClear *oldP);
XMLClear *updateClear_WOSD(XMLSTR lpszNewValue, XMLCSTR lpszOldValue);
// These are some useful functions when you want to insert a childNode, a text or a XMLClearTag in the
// middle (at a specified position) of a XMLNode tree already constructed. The value returned by these
// methods is to be used as last parameter (parameter 'pos') of addChild, addText or addClear.
int positionOfText(int i=0) const;
int positionOfText(XMLCSTR lpszValue) const;
int positionOfClear(int i=0) const;
int positionOfClear(XMLCSTR lpszValue) const;
int positionOfClear(XMLClear *a) const;
int positionOfChildNode(int i=0) const;
int positionOfChildNode(XMLNode x) const;
int positionOfChildNode(XMLCSTR name, int i=0) const; // return the position of the ith childNode with the specified name
// if (name==NULL) return the position of the ith childNode
// The setGlobalOptions function allows you to change tree global parameters that affect string&file
// parsing. First of all, you most-probably will never have to change these 3 global parameters.
// The return value of the setGlobalOptions function is "0" when there are no errors. If you try to
// set an unrecognized encoding then the return value will be "1" to signal an error.
//
// About the "guessWideCharChars" parameter:
// If "guessWideCharChars=1" and if this library is compiled in WideChar mode, then the
// "parseFile" and "openFileHelper" functions will test if the file contains ASCII
// characters. If this is the case, then the file will be loaded and converted in memory to
// WideChar before being parsed. If "guessWideCharChars=0", no conversion will
// be performed.
//
// If "guessWideCharChars=1" and if this library is compiled in ASCII/UTF8/char* mode, then the
// "parseFile" and "openFileHelper" functions will test if the file contains WideChar
// characters. If this is the case, then the file will be loaded and converted in memory to
// ASCII/UTF8/char* before being parsed. If "guessWideCharChars=0", no conversion will
// be performed
//
// Sometime, it's useful to set "guessWideCharChars=0" to disable any conversion
// because the test to detect the file-type (ASCII/UTF8/char* or WideChar) may fail (rarely).
//
// About the "characterEncoding" parameter:
// This parameter is only meaningful when compiling in char* mode (multibyte character mode).
// In wchar_t* (wide char mode), this parameter is ignored. This parameter should be one of the
// three currently recognized encodings: XMLNode::encoding_UTF8, XMLNode::encoding_ascii,
// XMLNode::encoding_ShiftJIS.
//
// About the "dropWhiteSpace" parameter:
// In most situations, text fields containing only white spaces (and carriage returns)
// are useless. Even more, these "empty" text fields are annoying because they increase the
// complexity of the user's code for parsing. So, 99% of the time, it's better to drop
// the "empty" text fields. However The XML specification indicates that no white spaces
// should be lost when parsing the file. So to be perfectly XML-compliant, you should set
// dropWhiteSpace=0. A note of caution: if you set "dropWhiteSpace=0", the parser will be
// slower and your code will be more complex.
// Enumeration for XML character encoding.
typedef enum XMLCharEncoding { encoding_UTF8=1, encoding_ascii=2, encoding_ShiftJIS=3 } XMLCharEncoding;
static char setGlobalOptions(XMLCharEncoding characterEncoding=XMLNode::encoding_UTF8, char guessWideCharChars=1, char dropWhiteSpace=1);
// The next function try to guess the character encoding. You most-probably will never
// have to use this function. It then returns the appropriate value of the global parameter
// "characterEncoding" described above. The guess is based on the content of a buffer of length
// "bufLen" bytes that contains the first bytes (minimum 25 bytes; 200 bytes is a good value) of the
// file to be parsed. The "openFileHelper" function is using this function to automatically compute
// the value of the "characterEncoding" global parameter. There are several heuristics used to do the
// guess. One of the heuristic is based on the "encoding" attribute. The original XML specifications
// forbids to use this attribute to do the guess but you can still use it if you set
// "useXMLEncodingAttribute" to 1 (this is the default behavior and the behavior of most parsers).
// If an inconsistency in the encoding is detected, then the return value is "0".
static XMLCharEncoding guessCharEncoding(void *buffer, int bufLen, char useXMLEncodingAttribute=1);
private:
// these are functions and structures used internally by the XMLNode class (don't bother about them):
typedef struct XMLNodeDataTag // to allow shallow copy and "intelligent/smart" pointers (automatic delete):
{
XMLCSTR lpszName; // Element name (=NULL if root)
int nChild, // Number of child nodes
nText, // Number of text fields
nClear, // Number of Clear fields (comments)
nAttribute; // Number of attributes
char isDeclaration; // Whether node is an XML declaration - '<?xml ?>'
struct XMLNodeDataTag *pParent; // Pointer to parent element (=NULL if root)
XMLNode *pChild; // Array of child nodes
XMLCSTR *pText; // Array of text fields
XMLClear *pClear; // Array of clear fields
XMLAttribute *pAttribute; // Array of attributes
int *pOrder; // order of the child_nodes,text_fields,clear_fields
int ref_count; // for garbage collection (smart pointers)
} XMLNodeData;
XMLNodeData *d;
char parseClearTag(void *px, void *pa);
char maybeAddTxT(void *pa, XMLCSTR tokenPStr);
int ParseXMLElement(void *pXML);
void *addToOrder(int memInc, int *_pos, int nc, void *p, int size, XMLElementType xtype);
int indexText(XMLCSTR lpszValue) const;
int indexClear(XMLCSTR lpszValue) const;
XMLNode addChild_priv(int,XMLSTR,char,int);
XMLAttribute *addAttribute_priv(int,XMLSTR,XMLSTR);
XMLCSTR addText_priv(int,XMLSTR,int);
XMLClear *addClear_priv(int,XMLSTR,XMLCSTR,XMLCSTR,int);
static inline int findPosition(XMLNodeData *d, int index, XMLElementType xtype);
static int CreateXMLStringR(XMLNodeData *pEntry, XMLSTR lpszMarker, int length, int nFormat);
static int removeOrderElement(XMLNodeData *d, XMLElementType t, int index);
static void exactMemory(XMLNodeData *d);
static int detachFromParent(XMLNodeData *d);
} XMLNode;
// This structure is given by the function "enumContents".
typedef struct XMLNodeContents
{
// This dictates what's the content of the XMLNodeContent
enum XMLElementType type;
// should be an union to access the appropriate data.
// compiler does not allow union of object with constructor... too bad.
XMLNode child;
XMLAttribute attrib;
XMLCSTR text;
XMLClear clear;
} XMLNodeContents;
XMLDLLENTRY void freeXMLString(XMLSTR t); // {free(t);}
// Duplicate (copy in a new allocated buffer) the source string. This is
// a very handy function when used with all the "XMLNode::*_WOSD" functions.
// (If (cbData!=0) then cbData is the number of chars to duplicate)
XMLDLLENTRY XMLSTR stringDup(XMLCSTR source, int cbData=0);
// The following class is processing strings so that all the characters
// &,",',<,> are replaced by their XML equivalent: &, ", ', <, >.
// This class is useful when creating from scratch an XML file using the
// "printf", "fprintf", "cout",... functions. If you are creating from scratch an
// XML file using the provided XMLNode class you must not use the "ToXMLStringTool"
// class (the "XMLNode" class does the processing job for you during rendering).
// Using the "ToXMLStringTool class" and the "fprintf function" is THE most efficient
// way to produce VERY large XML documents VERY fast.
typedef struct XMLDLLENTRY ToXMLStringTool
{
public:
ToXMLStringTool(): buf(NULL),buflen(0){}
~ToXMLStringTool();
void freeBuffer();
XMLSTR toXML(XMLCSTR source);
// The next function is deprecated because there is a possibility of
// "destination-buffer-overflow". It converts the string
// "source" to the string "dest".
static XMLSTR toXMLUnSafe(XMLSTR dest,XMLCSTR source);
private:
XMLSTR buf;
int buflen;
}ToXMLStringTool;
// Below is a class that allows you to include any binary data (images, sounds,...)
// into an XML document using "Base64 encoding". This class is completely
// separated from the rest of the xmlParser library and can be removed without any problem.
// To include some binary data into an XML file, you must convert the binary data into
// standard text (using "encode"). To retrieve the original binary data from the
// b64-encoded text included inside the XML file use "decode". Alternatively, these
// functions can also be used to "encrypt/decrypt" some critical data contained inside
// the XML (it's not a strong encryption at all, but sometimes it can be useful).
typedef struct XMLDLLENTRY XMLParserBase64Tool
{
public:
XMLParserBase64Tool(): buf(NULL),buflen(0){}
~XMLParserBase64Tool();
void freeBuffer();
// returns the length of the base64 string that encodes a data buffer of size inBufLen bytes.
// If "formatted" parameter is true, some space will be reserved for a carriage-return every 72 chars.
static int encodeLength(int inBufLen, char formatted=0);
// The "base64Encode" function returns a string containing the base64 encoding of "inByteLen" bytes
// from "inByteBuf". If "formatted" parameter is true, then there will be a carriage-return every 72 chars.
// The string will be free'd when the XMLParserBase64Tool object is deleted.
// All returned strings are sharing the same memory space.
XMLSTR encode(unsigned char *inByteBuf, unsigned int inByteLen, char formatted=0);
// returns the number of bytes which will be decoded from "inString".
static unsigned int decodeSize(XMLCSTR inString, XMLError *xe=NULL);
// returns a pointer to a buffer containing the binary data decoded from "inString"
// If "inString" is malformed NULL will be returned
// The output buffer will be free'd when the XMLParserBase64Tool object is deleted.
// All output buffer are sharing the same memory space.
unsigned char* decode(XMLCSTR inString, int *outByteLen=NULL, XMLError *xe=NULL);
// The next function is deprecated.
// decodes data from "inString" to "outByteBuf". You need to provide the size (in byte) of "outByteBuf"
// in "inMaxByteOutBuflen". If "outByteBuf" is not large enough or if data is malformed, then "FALSE"
// will be returned; otherwise "TRUE".
static unsigned char decode(XMLCSTR inString, unsigned char *outByteBuf, int inMaxByteOutBuflen, XMLError *xe=NULL);
private:
void *buf;
int buflen;
void alloc(int newsize);
}XMLParserBase64Tool;
#undef XMLDLLENTRY
#endif
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