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/*******************************************************************************
* Copyright (c) 2017 protos software gmbh (http://www.protos.de).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* CONTRIBUTORS:
* Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
#ifndef STRING_H_
#define STRING_H_
#include <cstddef>
#include <cstring>
namespace etRuntime {
/**
* a static size string class that basically encapsulates a C string
*/
class String {
public:
/**
* default constructor is empty string
*/
String();
/**
* copy constructor calls operator=(const char *rhs)
*/
String(const String &rhs)
: _size(0)
, _data(0)
{
++ncreated;
operator=(rhs._data);
}
/**
* constructor calls operator=(const char *rhs)
*/
String(const char *rhs)
: _size(0)
, _data(0)
{
++ncreated;
operator=(rhs);
}
/**
* virtual destructor
*/
virtual ~String(void);
/**
* returns the length of the C string stored
*/
size_t length(void) const
{
return std::strlen(this->_data);
}
/**
* returns a const char * pointer to the data of this array
*/
const char* c_str(void) const
{
return this->_data;
}
/**
* returns the character at the given position. If index is out of range 0 is returned
*/
char operator[](int index) const {
return (index < 0 || index >= (int)_size) ? 0 : _data[index];
}
/**
* forwards to operator=(const char *rhs)
*/
String& operator=(const String &rhs)
{
return operator=(rhs._data);
}
/**
* creates a copy of the rhs
*/
String& operator=(const char *rhs);
//
// string concatenation
//
/*
* concatenates the rhs to the end of the string.
*/
const String operator+=(const String& rhs) {
return operator+=(rhs._data);
}
/*
* concatenates the rhs to the end of the string.
*/
const String operator+=(const char* rhs);
/*
* concatenates the c to the end of the string.
*/
const String operator+=(char c);
//
// comparison
//
/**
* compares two strings
*/
int compare(const String& rhs) const {
return std::strcmp(this->_data, rhs._data);
}
int compareXX(const String& rhs) const {
return std::strcmp(this->_data, rhs._data);
}
//
// /**
// * compares a string with a C-String
// */
// int compare(const char *rhs) const {
// return strcmp(this->_data, rhs);
// }
//
// find
//
static const size_t npos = -1;
size_t find(const String& str, size_t pos = 0) const;
size_t find(const char* str, size_t pos = 0) const;
size_t find(char c, size_t pos = 0) const;
size_t rfind(const String& str) const;
size_t rfind(const char* str) const;
size_t rfind(char c) const;
//
// sub strings
//
String substr(size_t pos = 0, size_t len = npos) const;
static size_t getNAllocations() { return nallocs; }
static size_t getNDeallocations() { return ndeallocs; }
static size_t getNCreated() { return ncreated; }
static size_t getNDestroyed() { return ndestroyed; }
private:
static size_t nallocs;
static size_t ndeallocs;
static size_t ncreated;
static size_t ndestroyed;
size_t _size;
char* _data;
};
//
// string concatenation
//
/**
* concatenates lhs and rhs.
*/
inline const String operator+(const String &lhs, const String &rhs) {
// make a copy and add
return String(lhs) += rhs;
}
/**
* concatenates lhs and rhs.
*/
inline const String operator+(const String &lhs, const char* rhs) {
// make a copy and add
return String(lhs) += rhs;
}
/**
* concatenates lhs and c
*/
inline const String operator+(const String &lhs, char c) {
// make a copy and add
String result(lhs);
result += c;
return result;
}
/**
* concatenates lhs and rhs.
*/
inline const String operator+(const char* lhs, const String& rhs) {
// create a string and add
String result(lhs);
result += rhs;
return result;
}
/**
* concatenates c and rhs.
*/
inline const String operator+(char c, const String& rhs) {
// create a string and add
String result("");
result += c;
result += rhs;
return result;
}
//
// string comparison
//
/**
* compares two strings
*/
inline bool operator==(const String& lhs, const String &rhs) {
return lhs.compare(rhs)==0;
}
/**
* compares a string with a C-string
*/
inline bool operator==(const String& lhs, const char *rhs) {
return lhs.compare(rhs)==0;
}
/**
* compares a C-string with a string
*/
inline bool operator==(const char* lhs, const String& rhs) {
return rhs.compare(lhs)==0;
}
/**
* compares two strings
*/
inline bool operator!=(const String &lhs, const String &rhs) {
return !(lhs == rhs);
}
/**
* compares a string and a C-string
*/
inline bool operator!=(const String &lhs, const char *rhs) {
return !(lhs == rhs);
}
/**
* compares a C-string and a string
*/
inline bool operator!=(const char* lhs, const String& rhs) {
return !(lhs == rhs);
}
inline bool operator<(const String &lhs, const String& rhs) {
return lhs.compare(rhs) < 0;
}
inline bool operator<(const String &lhs, const char* rhs) {
return lhs.compare(rhs) < 0;
}
inline bool operator<(const char* lhs, const String& rhs) {
return rhs.compare(lhs) > 0;
}
inline bool operator<=(const String &lhs, const String& rhs) {
return lhs.compare(rhs) <= 0;
}
inline bool operator<=(const String &lhs, const char* rhs) {
return lhs.compare(rhs) <= 0;
}
inline bool operator<=(const char* lhs, const String& rhs) {
return rhs.compare(lhs) >= 0;
}
inline bool operator>(const String &lhs, const String& rhs) {
return lhs.compare(rhs) > 0;
}
inline bool operator>(const String &lhs, const char* rhs) {
return lhs.compare(rhs) > 0;
}
inline bool operator>(const char* lhs, const String& rhs) {
return rhs.compare(lhs) < 0;
}
inline bool operator>=(const String &lhs, const String& rhs) {
return lhs.compare(rhs) >= 0;
}
inline bool operator>=(const String &lhs, const char* rhs) {
return lhs.compare(rhs) >= 0;
}
inline bool operator>=(const char* lhs, const String& rhs) {
return rhs.compare(lhs) <= 0;
}
} /* namespace etRuntime */
#endif /* STRING_H_ */
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