1399 lines
30 KiB
C++
1399 lines
30 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine" and the "irrXML" project.
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// For conditions of distribution and use, see copyright notice in irrlicht.h and irrXML.h
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#ifndef __IRR_STRING_H_INCLUDED__
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#define __IRR_STRING_H_INCLUDED__
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#include "irrTypes.h"
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#include "irrAllocator.h"
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#include "irrMath.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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namespace irr
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{
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namespace core
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{
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//! Very simple string class with some useful features.
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/** string<c8> and string<wchar_t> both accept Unicode AND ASCII/Latin-1,
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so you can assign Unicode to string<c8> and ASCII/Latin-1 to string<wchar_t>
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(and the other way round) if you want to.
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However, note that the conversation between both is not done using any encoding.
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This means that c8 strings are treated as ASCII/Latin-1, not UTF-8, and
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are simply expanded to the equivalent wchar_t, while Unicode/wchar_t
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characters are truncated to 8-bit ASCII/Latin-1 characters, discarding all
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other information in the wchar_t.
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*/
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enum eLocaleID
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{
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IRR_LOCALE_ANSI = 0,
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IRR_LOCALE_GERMAN = 1
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};
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static eLocaleID locale_current = IRR_LOCALE_ANSI;
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static inline void locale_set ( eLocaleID id )
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{
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locale_current = id;
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}
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//! Returns a character converted to lower case
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static inline u32 locale_lower ( u32 x )
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{
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switch ( locale_current )
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{
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case IRR_LOCALE_GERMAN:
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case IRR_LOCALE_ANSI:
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break;
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}
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// ansi
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return x >= 'A' && x <= 'Z' ? x + 0x20 : x;
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}
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//! Returns a character converted to upper case
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static inline u32 locale_upper ( u32 x )
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{
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switch ( locale_current )
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{
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case IRR_LOCALE_GERMAN:
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case IRR_LOCALE_ANSI:
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break;
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}
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// ansi
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return x >= 'a' && x <= 'z' ? x + ( 'A' - 'a' ) : x;
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}
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template <typename T, typename TAlloc = irrAllocator<T> >
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class string
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{
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public:
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typedef T char_type;
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//! Default constructor
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string()
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: array(0), allocated(1), used(1)
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{
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array = allocator.allocate(1); // new T[1];
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array[0] = 0;
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}
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//! Constructor
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string(const string<T,TAlloc>& other)
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: array(0), allocated(0), used(0)
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{
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*this = other;
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}
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//! Constructor from other string types
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template <class B, class A>
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string(const string<B, A>& other)
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: array(0), allocated(0), used(0)
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{
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*this = other;
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}
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//! Constructs a string from a float
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explicit string(const double number)
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: array(0), allocated(0), used(0)
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{
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c8 tmpbuf[255];
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snprintf(tmpbuf, 255, "%0.6f", number);
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*this = tmpbuf;
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}
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//! Constructs a string from an int
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explicit string(int number)
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: array(0), allocated(0), used(0)
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{
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// store if negative and make positive
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bool negative = false;
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if (number < 0)
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{
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number *= -1;
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negative = true;
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}
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// temporary buffer for 16 numbers
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c8 tmpbuf[16]={0};
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u32 idx = 15;
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// special case '0'
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if (!number)
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{
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tmpbuf[14] = '0';
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*this = &tmpbuf[14];
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return;
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}
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// add numbers
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while(number && idx)
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{
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--idx;
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tmpbuf[idx] = (c8)('0' + (number % 10));
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number /= 10;
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}
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// add sign
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if (negative)
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{
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--idx;
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tmpbuf[idx] = '-';
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}
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*this = &tmpbuf[idx];
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}
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//! Constructs a string from an unsigned int
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explicit string(unsigned int number)
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: array(0), allocated(0), used(0)
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{
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// temporary buffer for 16 numbers
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c8 tmpbuf[16]={0};
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u32 idx = 15;
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// special case '0'
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if (!number)
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{
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tmpbuf[14] = '0';
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*this = &tmpbuf[14];
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return;
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}
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// add numbers
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while(number && idx)
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{
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--idx;
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tmpbuf[idx] = (c8)('0' + (number % 10));
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number /= 10;
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}
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*this = &tmpbuf[idx];
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}
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//! Constructs a string from a long
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explicit string(long number)
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: array(0), allocated(0), used(0)
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{
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// store if negative and make positive
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bool negative = false;
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if (number < 0)
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{
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number *= -1;
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negative = true;
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}
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// temporary buffer for 16 numbers
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c8 tmpbuf[16]={0};
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u32 idx = 15;
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// special case '0'
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if (!number)
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{
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tmpbuf[14] = '0';
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*this = &tmpbuf[14];
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return;
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}
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// add numbers
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while(number && idx)
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{
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--idx;
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tmpbuf[idx] = (c8)('0' + (number % 10));
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number /= 10;
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}
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// add sign
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if (negative)
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{
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--idx;
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tmpbuf[idx] = '-';
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}
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*this = &tmpbuf[idx];
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}
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//! Constructs a string from an unsigned long
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explicit string(unsigned long number)
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: array(0), allocated(0), used(0)
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{
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// temporary buffer for 16 numbers
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c8 tmpbuf[16]={0};
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u32 idx = 15;
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// special case '0'
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if (!number)
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{
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tmpbuf[14] = '0';
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*this = &tmpbuf[14];
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return;
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}
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// add numbers
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while(number && idx)
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{
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--idx;
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tmpbuf[idx] = (c8)('0' + (number % 10));
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number /= 10;
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}
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*this = &tmpbuf[idx];
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}
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//! Constructs a string from an unsigned long long
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explicit string(unsigned long long number)
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: array(0), allocated(0), used(0)
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{
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// temporary buffer for 32 numbers
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c8 tmpbuf[32]={0};
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u32 idx = 31;
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// special case '0'
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if (!number)
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{
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tmpbuf[30] = '0';
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*this = &tmpbuf[30];
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return;
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}
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// add numbers
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while(number && idx)
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{
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--idx;
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tmpbuf[idx] = (c8)('0' + (number % 10));
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number /= 10;
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}
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*this = &tmpbuf[idx];
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}
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//! Constructor for copying a string from a pointer with a given length
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template <class B>
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string(const B* const c, u32 length)
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: array(0), allocated(0), used(0)
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{
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if (!c)
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{
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// correctly init the string to an empty one
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*this="";
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return;
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}
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allocated = used = length+1;
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array = allocator.allocate(used); // new T[used];
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for (u32 l = 0; l<length; ++l)
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array[l] = (T)c[l];
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array[length] = 0;
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}
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//! Constructor for unicode and ascii strings
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template <class B>
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string(const B* const c)
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: array(0), allocated(0), used(0)
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{
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*this = c;
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}
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//! Destructor
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~string()
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{
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allocator.deallocate(array); // delete [] array;
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}
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//! Assignment operator
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string<T,TAlloc>& operator=(const string<T,TAlloc>& other)
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{
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if (this == &other)
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return *this;
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used = other.size()+1;
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if (used>allocated)
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{
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allocator.deallocate(array); // delete [] array;
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allocated = used;
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array = allocator.allocate(used); //new T[used];
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}
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const T* p = other.c_str();
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for (u32 i=0; i<used; ++i, ++p)
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array[i] = *p;
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return *this;
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}
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//! Assignment operator for other string types
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template <class B, class A>
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string<T,TAlloc>& operator=(const string<B,A>& other)
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{
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*this = other.c_str();
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return *this;
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}
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//! Assignment operator for strings, ascii and unicode
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template <class B>
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string<T,TAlloc>& operator=(const B* const c)
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{
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if (!c)
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{
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if (!array)
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{
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array = allocator.allocate(1); //new T[1];
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allocated = 1;
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}
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used = 1;
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array[0] = 0x0;
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return *this;
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}
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if ((void*)c == (void*)array)
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return *this;
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u32 len = 0;
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const B* p = c;
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do
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{
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++len;
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} while(*p++);
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// we'll keep the old string for a while, because the new
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// string could be a part of the current string.
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T* oldArray = array;
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used = len;
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if (used>allocated)
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{
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allocated = used;
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array = allocator.allocate(used); //new T[used];
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}
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for (u32 l = 0; l<len; ++l)
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array[l] = (T)c[l];
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if (oldArray != array)
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allocator.deallocate(oldArray); // delete [] oldArray;
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return *this;
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}
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//! Append operator for other strings
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string<T,TAlloc> operator+(const string<T,TAlloc>& other) const
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{
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string<T,TAlloc> str(*this);
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str.append(other);
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return str;
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}
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//! Append operator for strings, ascii and unicode
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template <class B>
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string<T,TAlloc> operator+(const B* const c) const
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{
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string<T,TAlloc> str(*this);
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str.append(c);
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return str;
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}
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//! Direct access operator
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T& operator [](const u32 index)
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{
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_IRR_DEBUG_BREAK_IF(index>=used) // bad index
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return array[index];
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}
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//! Direct access operator
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const T& operator [](const u32 index) const
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{
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_IRR_DEBUG_BREAK_IF(index>=used) // bad index
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return array[index];
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}
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//! Equality operator
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bool operator==(const T* const str) const
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{
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if (!str)
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return false;
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u32 i;
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for (i=0; array[i] && str[i]; ++i)
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if (array[i] != str[i])
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return false;
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return (!array[i] && !str[i]);
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}
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//! Equality operator
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bool operator==(const string<T,TAlloc>& other) const
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{
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for (u32 i=0; array[i] && other.array[i]; ++i)
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if (array[i] != other.array[i])
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return false;
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return used == other.used;
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}
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//! Is smaller comparator
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bool operator<(const string<T,TAlloc>& other) const
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{
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for (u32 i=0; array[i] && other.array[i]; ++i)
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{
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const s32 diff = array[i] - other.array[i];
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if (diff)
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return (diff < 0);
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}
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return (used < other.used);
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}
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//! Inequality operator
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bool operator!=(const T* const str) const
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{
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return !(*this == str);
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}
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//! Inequality operator
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bool operator!=(const string<T,TAlloc>& other) const
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{
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return !(*this == other);
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}
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//! Returns length of the string's content
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/** \return Length of the string's content in characters, excluding
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the trailing NUL. */
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u32 size() const
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{
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return used-1;
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}
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//! Informs if the string is empty or not.
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//! \return True if the string is empty, false if not.
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bool empty() const
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{
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return (size() == 0);
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}
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//! Returns character string
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/** \return pointer to C-style NUL terminated string. */
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const T* c_str() const
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{
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return array;
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}
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//! Makes the string lower case.
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string<T,TAlloc>& make_lower()
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{
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for (u32 i=0; array[i]; ++i)
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array[i] = locale_lower ( array[i] );
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return *this;
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}
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//! Makes the string upper case.
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string<T,TAlloc>& make_upper()
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{
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for (u32 i=0; array[i]; ++i)
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array[i] = locale_upper ( array[i] );
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return *this;
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}
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//! Compares the strings ignoring case.
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/** \param other: Other string to compare.
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\return True if the strings are equal ignoring case. */
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bool equals_ignore_case(const string<T,TAlloc>& other) const
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{
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for(u32 i=0; array[i] && other[i]; ++i)
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if (locale_lower( array[i]) != locale_lower(other[i]))
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return false;
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return used == other.used;
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}
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//! Compares the strings ignoring case.
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/** \param other: Other string to compare.
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\param sourcePos: where to start to compare in the string
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\return True if the strings are equal ignoring case. */
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bool equals_substring_ignore_case(const string<T,TAlloc>&other, const s32 sourcePos = 0 ) const
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{
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if ( (u32) sourcePos >= used )
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return false;
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u32 i;
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for( i=0; array[sourcePos + i] && other[i]; ++i)
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if (locale_lower( array[sourcePos + i]) != locale_lower(other[i]))
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return false;
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return array[sourcePos + i] == 0 && other[i] == 0;
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}
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//! Compares the strings ignoring case.
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/** \param other: Other string to compare.
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\return True if this string is smaller ignoring case. */
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bool lower_ignore_case(const string<T,TAlloc>& other) const
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{
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for(u32 i=0; array[i] && other.array[i]; ++i)
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{
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s32 diff = (s32) locale_lower ( array[i] ) - (s32) locale_lower ( other.array[i] );
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if ( diff )
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return diff < 0;
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}
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return used < other.used;
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}
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//! compares the first n characters of the strings
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/** \param other Other string to compare.
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\param n Number of characters to compare
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\return True if the n first characters of both strings are equal. */
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bool equalsn(const string<T,TAlloc>& other, u32 n) const
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{
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u32 i;
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for(i=0; array[i] && other[i] && i < n; ++i)
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if (array[i] != other[i])
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return false;
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// if one (or both) of the strings was smaller then they
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// are only equal if they have the same length
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return (i == n) || (used == other.used);
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}
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//! compares the first n characters of the strings
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/** \param str Other string to compare.
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\param n Number of characters to compare
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\return True if the n first characters of both strings are equal. */
|
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bool equalsn(const T* const str, u32 n) const
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{
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if (!str)
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return false;
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u32 i;
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for(i=0; array[i] && str[i] && i < n; ++i)
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if (array[i] != str[i])
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return false;
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|
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// if one (or both) of the strings was smaller then they
|
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// are only equal if they have the same length
|
|
return (i == n) || (array[i] == 0 && str[i] == 0);
|
|
}
|
|
|
|
|
|
//! Appends a character to this string
|
|
/** \param character: Character to append. */
|
|
string<T,TAlloc>& append(T character)
|
|
{
|
|
if (used + 1 > allocated)
|
|
reallocate(used + 1);
|
|
|
|
++used;
|
|
|
|
array[used-2] = character;
|
|
array[used-1] = 0;
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a char string to this string
|
|
/** \param other: Char string to append. */
|
|
/** \param length: The length of the string to append. */
|
|
string<T,TAlloc>& append(const T* const other, u32 length=0xffffffff)
|
|
{
|
|
if (!other)
|
|
return *this;
|
|
|
|
u32 len = 0;
|
|
const T* p = other;
|
|
while(*p)
|
|
{
|
|
++len;
|
|
++p;
|
|
}
|
|
if (len > length)
|
|
len = length;
|
|
|
|
if (used + len > allocated)
|
|
reallocate(used + len);
|
|
|
|
--used;
|
|
++len;
|
|
|
|
for (u32 l=0; l<len; ++l)
|
|
array[l+used] = *(other+l);
|
|
|
|
used += len;
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string to this string
|
|
/** \param other: String to append. */
|
|
string<T,TAlloc>& append(const string<T,TAlloc>& other)
|
|
{
|
|
if (other.size() == 0)
|
|
return *this;
|
|
|
|
--used;
|
|
u32 len = other.size()+1;
|
|
|
|
if (used + len > allocated)
|
|
reallocate(used + len);
|
|
|
|
for (u32 l=0; l<len; ++l)
|
|
array[used+l] = other[l];
|
|
|
|
used += len;
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string of the length l to this string.
|
|
/** \param other: other String to append to this string.
|
|
\param length: How much characters of the other string to add to this one. */
|
|
string<T,TAlloc>& append(const string<T,TAlloc>& other, u32 length)
|
|
{
|
|
if (other.size() == 0)
|
|
return *this;
|
|
|
|
if (other.size() < length)
|
|
{
|
|
append(other);
|
|
return *this;
|
|
}
|
|
|
|
if (used + length > allocated)
|
|
reallocate(used + length);
|
|
|
|
--used;
|
|
|
|
for (u32 l=0; l<length; ++l)
|
|
array[l+used] = other[l];
|
|
used += length;
|
|
|
|
// ensure proper termination
|
|
array[used]=0;
|
|
++used;
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Reserves some memory.
|
|
/** \param count: Amount of characters to reserve. */
|
|
void reserve(u32 count)
|
|
{
|
|
if (count < allocated)
|
|
return;
|
|
|
|
reallocate(count);
|
|
}
|
|
|
|
|
|
//! finds first occurrence of character in string
|
|
/** \param c: Character to search for.
|
|
\return Position where the character has been found,
|
|
or -1 if not found. */
|
|
s32 findFirst(T c) const
|
|
{
|
|
for (u32 i=0; i<used-1; ++i)
|
|
if (array[i] == c)
|
|
return i;
|
|
|
|
return -1;
|
|
}
|
|
|
|
//! finds first occurrence of a character of a list in string
|
|
/** \param c: List of characters to find. For example if the method
|
|
should find the first occurrence of 'a' or 'b', this parameter should be "ab".
|
|
\param count: Amount of characters in the list. Usually,
|
|
this should be strlen(c)
|
|
\return Position where one of the characters has been found,
|
|
or -1 if not found. */
|
|
s32 findFirstChar(const T* const c, u32 count=1) const
|
|
{
|
|
if (!c || !count)
|
|
return -1;
|
|
|
|
for (u32 i=0; i<used-1; ++i)
|
|
for (u32 j=0; j<count; ++j)
|
|
if (array[i] == c[j])
|
|
return i;
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
//! Finds first position of a character not in a given list.
|
|
/** \param c: List of characters not to find. For example if the method
|
|
should find the first occurrence of a character not 'a' or 'b', this parameter should be "ab".
|
|
\param count: Amount of characters in the list. Usually,
|
|
this should be strlen(c)
|
|
\return Position where the character has been found,
|
|
or -1 if not found. */
|
|
template <class B>
|
|
s32 findFirstCharNotInList(const B* const c, u32 count=1) const
|
|
{
|
|
if (!c || !count)
|
|
return -1;
|
|
|
|
for (u32 i=0; i<used-1; ++i)
|
|
{
|
|
u32 j;
|
|
for (j=0; j<count; ++j)
|
|
if (array[i] == c[j])
|
|
break;
|
|
|
|
if (j==count)
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
//! Finds last position of a character not in a given list.
|
|
/** \param c: List of characters not to find. For example if the method
|
|
should find the first occurrence of a character not 'a' or 'b', this parameter should be "ab".
|
|
\param count: Amount of characters in the list. Usually,
|
|
this should be strlen(c)
|
|
\return Position where the character has been found,
|
|
or -1 if not found. */
|
|
template <class B>
|
|
s32 findLastCharNotInList(const B* const c, u32 count=1) const
|
|
{
|
|
if (!c || !count)
|
|
return -1;
|
|
|
|
for (s32 i=(s32)(used-2); i>=0; --i)
|
|
{
|
|
u32 j;
|
|
for (j=0; j<count; ++j)
|
|
if (array[i] == c[j])
|
|
break;
|
|
|
|
if (j==count)
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
//! finds next occurrence of character in string
|
|
/** \param c: Character to search for.
|
|
\param startPos: Position in string to start searching.
|
|
\return Position where the character has been found,
|
|
or -1 if not found. */
|
|
s32 findNext(T c, u32 startPos) const
|
|
{
|
|
for (u32 i=startPos; i<used-1; ++i)
|
|
if (array[i] == c)
|
|
return i;
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
//! finds last occurrence of character in string
|
|
/** \param c: Character to search for.
|
|
\param start: start to search reverse ( default = -1, on end )
|
|
\return Position where the character has been found,
|
|
or -1 if not found. */
|
|
s32 findLast(T c, s32 start = -1) const
|
|
{
|
|
start = core::clamp ( start < 0 ? (s32)(used) - 2 : start, 0, (s32)(used) - 2 );
|
|
for (s32 i=start; i>=0; --i)
|
|
if (array[i] == c)
|
|
return i;
|
|
|
|
return -1;
|
|
}
|
|
|
|
//! finds last occurrence of a character of a list in string
|
|
/** \param c: List of strings to find. For example if the method
|
|
should find the last occurrence of 'a' or 'b', this parameter should be "ab".
|
|
\param count: Amount of characters in the list. Usually,
|
|
this should be strlen(c)
|
|
\return Position where one of the characters has been found,
|
|
or -1 if not found. */
|
|
s32 findLastChar(const T* const c, u32 count=1) const
|
|
{
|
|
if (!c || !count)
|
|
return -1;
|
|
|
|
for (s32 i=(s32)used-2; i>=0; --i)
|
|
for (u32 j=0; j<count; ++j)
|
|
if (array[i] == c[j])
|
|
return i;
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
//! finds another string in this string
|
|
/** \param str: Another string
|
|
\param start: Start position of the search
|
|
\return Positions where the string has been found,
|
|
or -1 if not found. */
|
|
template <class B>
|
|
s32 find(const B* const str, const u32 start = 0) const
|
|
{
|
|
if (str && *str)
|
|
{
|
|
u32 len = 0;
|
|
|
|
while (str[len])
|
|
++len;
|
|
|
|
if (len > used-1)
|
|
return -1;
|
|
|
|
for (u32 i=start; i<used-len; ++i)
|
|
{
|
|
u32 j=0;
|
|
|
|
while(str[j] && array[i+j] == str[j])
|
|
++j;
|
|
|
|
if (!str[j])
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
//! Returns a substring
|
|
/** \param begin Start of substring.
|
|
\param length Length of substring.
|
|
\param make_lower copy only lower case */
|
|
string<T> subString(u32 begin, s32 length, bool make_lower = false ) const
|
|
{
|
|
// if start after string
|
|
// or no proper substring length
|
|
if ((length <= 0) || (begin>=size()))
|
|
return string<T>("");
|
|
// clamp length to maximal value
|
|
if ((length+begin) > size())
|
|
length = size()-begin;
|
|
|
|
string<T> o;
|
|
o.reserve(length+1);
|
|
|
|
s32 i;
|
|
if ( !make_lower )
|
|
{
|
|
for (i=0; i<length; ++i)
|
|
o.array[i] = array[i+begin];
|
|
}
|
|
else
|
|
{
|
|
for (i=0; i<length; ++i)
|
|
o.array[i] = locale_lower ( array[i+begin] );
|
|
}
|
|
|
|
o.array[length] = 0;
|
|
o.used = length + 1;
|
|
|
|
return o;
|
|
}
|
|
|
|
|
|
//! Appends a character to this string
|
|
/** \param c Character to append. */
|
|
string<T,TAlloc>& operator += (T c)
|
|
{
|
|
append(c);
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a char string to this string
|
|
/** \param c Char string to append. */
|
|
string<T,TAlloc>& operator += (const T* const c)
|
|
{
|
|
append(c);
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string to this string
|
|
/** \param other String to append. */
|
|
string<T,TAlloc>& operator += (const string<T,TAlloc>& other)
|
|
{
|
|
append(other);
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string representation of a number to this string
|
|
/** \param i Number to append. */
|
|
string<T,TAlloc>& operator += (const int i)
|
|
{
|
|
append(string<T,TAlloc>(i));
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string representation of a number to this string
|
|
/** \param i Number to append. */
|
|
string<T,TAlloc>& operator += (const unsigned int i)
|
|
{
|
|
append(string<T,TAlloc>(i));
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string representation of a number to this string
|
|
/** \param i Number to append. */
|
|
string<T,TAlloc>& operator += (const long i)
|
|
{
|
|
append(string<T,TAlloc>(i));
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string representation of a number to this string
|
|
/** \param i Number to append. */
|
|
string<T,TAlloc>& operator += (const unsigned long i)
|
|
{
|
|
append(string<T,TAlloc>(i));
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string representation of a number to this string
|
|
/** \param i Number to append. */
|
|
string<T,TAlloc>& operator += (const double i)
|
|
{
|
|
append(string<T,TAlloc>(i));
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Appends a string representation of a number to this string
|
|
/** \param i Number to append. */
|
|
string<T,TAlloc>& operator += (const float i)
|
|
{
|
|
append(string<T,TAlloc>(i));
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Replaces all characters of a special type with another one
|
|
/** \param toReplace Character to replace.
|
|
\param replaceWith Character replacing the old one. */
|
|
string<T,TAlloc>& replace(T toReplace, T replaceWith)
|
|
{
|
|
for (u32 i=0; i<used-1; ++i)
|
|
if (array[i] == toReplace)
|
|
array[i] = replaceWith;
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Replaces all instances of a string with another one.
|
|
/** \param toReplace The string to replace.
|
|
\param replaceWith The string replacing the old one. */
|
|
string<T,TAlloc>& replace(const string<T,TAlloc>& toReplace, const string<T,TAlloc>& replaceWith)
|
|
{
|
|
if (toReplace.size() == 0)
|
|
return *this;
|
|
|
|
const T* other = toReplace.c_str();
|
|
const T* replace = replaceWith.c_str();
|
|
const u32 other_size = toReplace.size();
|
|
const u32 replace_size = replaceWith.size();
|
|
|
|
// Determine the delta. The algorithm will change depending on the delta.
|
|
s32 delta = replace_size - other_size;
|
|
|
|
// A character for character replace. The string will not shrink or grow.
|
|
if (delta == 0)
|
|
{
|
|
s32 pos = 0;
|
|
while ((pos = find(other, pos)) != -1)
|
|
{
|
|
for (u32 i = 0; i < replace_size; ++i)
|
|
array[pos + i] = replace[i];
|
|
++pos;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
// We are going to be removing some characters. The string will shrink.
|
|
if (delta < 0)
|
|
{
|
|
u32 i = 0;
|
|
for (u32 pos = 0; pos < used; ++i, ++pos)
|
|
{
|
|
// Is this potentially a match?
|
|
if (array[pos] == *other)
|
|
{
|
|
// Check to see if we have a match.
|
|
u32 j;
|
|
for (j = 0; j < other_size; ++j)
|
|
{
|
|
if (array[pos + j] != other[j])
|
|
break;
|
|
}
|
|
|
|
// If we have a match, replace characters.
|
|
if (j == other_size)
|
|
{
|
|
for (j = 0; j < replace_size; ++j)
|
|
array[i + j] = replace[j];
|
|
i += replace_size - 1;
|
|
pos += other_size - 1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// No match found, just copy characters.
|
|
array[i] = array[pos];
|
|
}
|
|
array[i-1] = 0;
|
|
used = i;
|
|
|
|
return *this;
|
|
}
|
|
|
|
// We are going to be adding characters, so the string size will increase.
|
|
// Count the number of times toReplace exists in the string so we can allocate the new size.
|
|
u32 find_count = 0;
|
|
s32 pos = 0;
|
|
while ((pos = find(other, pos)) != -1)
|
|
{
|
|
++find_count;
|
|
++pos;
|
|
}
|
|
|
|
// Re-allocate the string now, if needed.
|
|
u32 len = delta * find_count;
|
|
if (used + len > allocated)
|
|
reallocate(used + len);
|
|
|
|
// Start replacing.
|
|
pos = 0;
|
|
while ((pos = find(other, pos)) != -1)
|
|
{
|
|
T* start = array + pos + other_size - 1;
|
|
T* ptr = array + used - 1;
|
|
T* end = array + delta + used -1;
|
|
|
|
// Shift characters to make room for the string.
|
|
while (ptr != start)
|
|
{
|
|
*end = *ptr;
|
|
--ptr;
|
|
--end;
|
|
}
|
|
|
|
// Add the new string now.
|
|
for (u32 i = 0; i < replace_size; ++i)
|
|
array[pos + i] = replace[i];
|
|
|
|
pos += replace_size;
|
|
used += delta;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Removes characters from a string.
|
|
/** \param c: Character to remove. */
|
|
string<T,TAlloc>& remove(T c)
|
|
{
|
|
u32 pos = 0;
|
|
u32 found = 0;
|
|
for (u32 i=0; i<used-1; ++i)
|
|
{
|
|
if (array[i] == c)
|
|
{
|
|
++found;
|
|
continue;
|
|
}
|
|
|
|
array[pos++] = array[i];
|
|
}
|
|
used -= found;
|
|
array[used-1] = 0;
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Removes a string from the string.
|
|
/** \param toRemove: String to remove. */
|
|
string<T,TAlloc>& remove(const string<T,TAlloc>& toRemove)
|
|
{
|
|
u32 size = toRemove.size();
|
|
if ( size == 0 )
|
|
return *this;
|
|
u32 pos = 0;
|
|
u32 found = 0;
|
|
for (u32 i=0; i<used-1; ++i)
|
|
{
|
|
u32 j = 0;
|
|
while (j < size)
|
|
{
|
|
if (array[i + j] != toRemove[j])
|
|
break;
|
|
++j;
|
|
}
|
|
if (j == size)
|
|
{
|
|
found += size;
|
|
i += size - 1;
|
|
continue;
|
|
}
|
|
|
|
array[pos++] = array[i];
|
|
}
|
|
used -= found;
|
|
array[used-1] = 0;
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Removes characters from a string.
|
|
/** \param characters: Characters to remove. */
|
|
string<T,TAlloc>& removeChars(const string<T,TAlloc> & characters)
|
|
{
|
|
if (characters.size() == 0)
|
|
return *this;
|
|
|
|
u32 pos = 0;
|
|
u32 found = 0;
|
|
for (u32 i=0; i<used-1; ++i)
|
|
{
|
|
// Don't use characters.findFirst as it finds the \0,
|
|
// causing used to become incorrect.
|
|
bool docontinue = false;
|
|
for (u32 j=0; j<characters.size(); ++j)
|
|
{
|
|
if (characters[j] == array[i])
|
|
{
|
|
++found;
|
|
docontinue = true;
|
|
break;
|
|
}
|
|
}
|
|
if (docontinue)
|
|
continue;
|
|
|
|
array[pos++] = array[i];
|
|
}
|
|
used -= found;
|
|
array[used-1] = 0;
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
//! Trims the string.
|
|
/** Removes the specified characters (by default, Latin-1 whitespace)
|
|
from the begining and the end of the string. */
|
|
string<T,TAlloc>& trim(const string<T,TAlloc> & whitespace = " \t\n\r")
|
|
{
|
|
// find start and end of the substring without the specified characters
|
|
const s32 begin = findFirstCharNotInList(whitespace.c_str(), whitespace.used);
|
|
if (begin == -1)
|
|
return (*this="");
|
|
|
|
const s32 end = findLastCharNotInList(whitespace.c_str(), whitespace.used);
|
|
|
|
return (*this = subString(begin, (end +1) - begin));
|
|
}
|
|
|
|
|
|
//! Erases a character from the string.
|
|
/** May be slow, because all elements
|
|
following after the erased element have to be copied.
|
|
\param index: Index of element to be erased. */
|
|
string<T,TAlloc>& erase(u32 index)
|
|
{
|
|
_IRR_DEBUG_BREAK_IF(index>=used) // access violation
|
|
|
|
for (u32 i=index+1; i<used; ++i)
|
|
array[i-1] = array[i];
|
|
|
|
--used;
|
|
return *this;
|
|
}
|
|
|
|
//! verify the existing string.
|
|
string<T,TAlloc>& validate()
|
|
{
|
|
// terminate on existing null
|
|
for (u32 i=0; i<allocated; ++i)
|
|
{
|
|
if (array[i] == 0)
|
|
{
|
|
used = i + 1;
|
|
return *this;
|
|
}
|
|
}
|
|
|
|
// terminate
|
|
if ( allocated > 0 )
|
|
{
|
|
used = allocated;
|
|
array[used-1] = 0;
|
|
}
|
|
else
|
|
{
|
|
used = 0;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
//! gets the last char of a string or null
|
|
T lastChar() const
|
|
{
|
|
return used > 1 ? array[used-2] : 0;
|
|
}
|
|
|
|
//! split string into parts.
|
|
/** This method will split a string at certain delimiter characters
|
|
into the container passed in as reference. The type of the container
|
|
has to be given as template parameter. It must provide a push_back and
|
|
a size method.
|
|
\param ret The result container
|
|
\param c C-style string of delimiter characters
|
|
\param count Number of delimiter characters
|
|
\param ignoreEmptyTokens Flag to avoid empty substrings in the result
|
|
container. If two delimiters occur without a character in between, an
|
|
empty substring would be placed in the result. If this flag is set,
|
|
only non-empty strings are stored.
|
|
\param keepSeparators Flag which allows to add the separator to the
|
|
result string. If this flag is true, the concatenation of the
|
|
substrings results in the original string. Otherwise, only the
|
|
characters between the delimiters are returned.
|
|
\return The number of resulting substrings
|
|
*/
|
|
template<class container>
|
|
u32 split(container& ret, const T* const c, u32 count=1, bool ignoreEmptyTokens=true, bool keepSeparators=false) const
|
|
{
|
|
if (!c)
|
|
return 0;
|
|
|
|
const u32 oldSize=ret.size();
|
|
u32 lastpos = 0;
|
|
bool lastWasSeparator = false;
|
|
for (u32 i=0; i<used; ++i)
|
|
{
|
|
bool foundSeparator = false;
|
|
for (u32 j=0; j<count; ++j)
|
|
{
|
|
if (array[i] == c[j])
|
|
{
|
|
if ((!ignoreEmptyTokens || i - lastpos != 0) &&
|
|
!lastWasSeparator)
|
|
ret.push_back(string<T,TAlloc>(&array[lastpos], i - lastpos));
|
|
foundSeparator = true;
|
|
lastpos = (keepSeparators ? i : i + 1);
|
|
break;
|
|
}
|
|
}
|
|
lastWasSeparator = foundSeparator;
|
|
}
|
|
if ((used - 1) > lastpos)
|
|
ret.push_back(string<T,TAlloc>(&array[lastpos], (used - 1) - lastpos));
|
|
return ret.size()-oldSize;
|
|
}
|
|
|
|
private:
|
|
|
|
//! Reallocate the array, make it bigger or smaller
|
|
void reallocate(u32 new_size)
|
|
{
|
|
T* old_array = array;
|
|
|
|
array = allocator.allocate(new_size); //new T[new_size];
|
|
allocated = new_size;
|
|
|
|
u32 amount = used < new_size ? used : new_size;
|
|
for (u32 i=0; i<amount; ++i)
|
|
array[i] = old_array[i];
|
|
|
|
if (allocated < used)
|
|
used = allocated;
|
|
|
|
allocator.deallocate(old_array); // delete [] old_array;
|
|
}
|
|
|
|
//--- member variables
|
|
|
|
T* array;
|
|
u32 allocated;
|
|
u32 used;
|
|
TAlloc allocator;
|
|
};
|
|
|
|
|
|
//! Typedef for character strings
|
|
typedef string<c8> stringc;
|
|
|
|
//! Typedef for wide character strings
|
|
typedef string<wchar_t> stringw;
|
|
|
|
|
|
} // end namespace core
|
|
} // end namespace irr
|
|
|
|
#endif
|
|
|