/usr/include/choreonoid-1.1/cnoid/src/Util/EasyScanner.h is in libcnoid-dev 1.1.0+dfsg-6.1+b4.
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@brief The header file of a text scanner class
@author Shin'ichiro Nakaoka
*/
#ifndef CNOID_UTIL_EASYSCANNER_H_INCLUDED
#define CNOID_UTIL_EASYSCANNER_H_INCLUDED
#include <map>
#include <string>
#include <vector>
#include <boost/shared_ptr.hpp>
#include "exportdecl.h"
namespace cnoid {
/**
@todo introduce a pimpl to hide the use of map, vector
*/
class CNOID_EXPORT EasyScanner {
public:
class Endl {
//int dummy;
};
class CNOID_EXPORT Exception {
public:
std::string message;
std::string filename;
int lineNumber;
std::string getFullMessage();
};
enum TokenType {
T_NONE = 0, T_SPACE, T_ALPHABET, T_INTEGER, T_DOUBLE, T_WORD,
T_STRING, T_SIGLUM, T_LF, T_EOF
};
typedef std::map<std::string, int> SymbolMap;
typedef std::pair<std::string, int> SymbolPair;
typedef boost::shared_ptr<SymbolMap> SymbolMapPtr;
Endl endl;
EasyScanner();
EasyScanner(std::string filename);
EasyScanner(const EasyScanner& scanner, bool copy_text = false);
virtual ~EasyScanner();
void putSymbols();
inline void registerSymbol(int id, const std::string& symbol) {
symbols->insert(SymbolPair(symbol, id));
}
inline int getSymbolID(const std::string& symbol) {
SymbolMap::iterator p = symbols->find(symbol);
return (p != symbols->end()) ? p->second : 0;
}
/// if 0, comment is disabled
void setCommentChar(char cc);
void setLineOriented(bool on);
void setQuoteChar(char qc);
void setWhiteSpaceChar(char ws);
void loadFile(const std::string& filename);
void setText(const char* text, int len);
void setLineNumberOffset(int offset);
void setDefaultErrorMessage(const std::string& message){
defaultErrorMessage = message;
}
void moveToHead();
int readToken();
void toLower();
bool readDouble();
bool readInt();
bool readChar();
bool readChar(int chara);
int peekChar();
/**
In contrast to readString(),
this function does not recognize siglums except '_' as a part of a word.
*/
inline bool readWord() {
skipSpace();
return readWord0();
}
/**
In contrast to readWord(),
this function allows a string to include siglums such as !,",#,$,%,&,...
*/
inline bool readString(const int delimiterChar = ',') {
skipSpace();
return readString0(delimiterChar);
}
bool readString(const char* str);
inline bool readString(const std::string& str) {
return readString(str.c_str());
}
bool readQuotedString(bool allowNoQuotedWord = false);
bool readUnquotedTextBlock();
bool readSymbol();
bool readSymbol(int id);
inline bool isEOF(){
skipSpace();
return (*text == '\0');
}
/// reading a line feed
inline bool readLF() {
skipSpace();
return readLF0();
}
inline bool readLFEOF() {
skipSpace();
return readLF0() ? true : (*text == '\0');
}
bool checkLF();
bool readLine();
bool skipLine();
bool skipBlankLines();
void skipSpace();
void throwException(const char* message);
void throwException(const std::string& message);
/**
The exception version of readInt().
\return Scanned int value.
*/
inline int readIntEx(const char* message = 0) {
if(!readInt()) throwException(message);
return intValue;
}
/**
The exception version of readDouble().
\return Scanned double value.
*/
inline double readDoubleEx(const char* message = 0) {
if(!readDouble()) throwException(message);
return doubleValue;
}
/**
The exception version of readChar().
\return Scanned char value.
*/
inline int readCharEx(const char* message = 0) {
if(!readChar())
throwException(message);
return charValue;
}
/**
The exception version of readChar().
*/
inline void readCharEx(int chara, const char* message = 0) {
if(!readChar(chara)) throwException(message);
}
/**
The exception version of readWord().
\return Scanned word string.
*/
inline std::string readWordEx(const char* message = 0) {
if(!readWord()) throwException(message);
return stringValue;
}
/**
The exception version of readString().
\return Scanned word string.
*/
inline std::string readStringEx(const char* message = 0) {
if(!readString()) throwException(message);
return stringValue;
}
inline std::string readQuotedStringEx(const char* message = 0) {
if(!readQuotedString()) throwException(message);
return stringValue;
}
/**
The exception version of readSymbol().
\return ID of the scanned symbol.
*/
inline int readSymbolEx(const char* message = 0) {
if(!readSymbol()) throwException(message);
return symbolValue;
}
/**
The exception version of readLF().
*/
inline void readLFex(const char* message = 0) {
if(!readLF()) throwException(message);
}
inline void readLFEOFex(const char* message = 0) {
if(!readLFEOF()) throwException(message);
}
int intValue;
double doubleValue;
std::string stringValue;
char charValue;
int symbolValue;
std::string defaultErrorMessage;
int lineNumber;
char* text;
std::string filename;
private:
void init();
bool extractQuotedString();
inline void skipToLineEnd();
bool readLF0();
bool readWord0();
bool readString0(const int delimiterChar);
char* textBuf;
int size;
char* textBufEnd;
int lineNumberOffset;
int commentChar;
int quoteChar;
bool isLineOriented;
std::vector<int> whiteSpaceChars;
SymbolMapPtr symbols;
friend CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, double& value);
friend CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, int& value);
friend CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, const char* matchString);
friend CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, char matchChar);
friend CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, std::string& str);
friend CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, EasyScanner::Endl endl);
};
CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, double& value);
CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, int& value);
CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, const char* matchString);
CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, char matchChar);
CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, std::string& str);
CNOID_EXPORT EasyScanner& operator>>(EasyScanner& scanner, EasyScanner::Endl endl);
typedef boost::shared_ptr<EasyScanner> EasyScannerPtr;
}
#endif
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