138 lines
2.9 KiB
C++
138 lines
2.9 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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string.cpp
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Useful functions for manipulating strings.
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******************************************************************************/
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#include "platform.h"
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#include "string.h"
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#include "memory.h"
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namespace Maxsi
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{
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namespace String
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{
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DUAL_FUNCTION(size_t, strlen, Length, (const char* String))
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{
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size_t Result = 0;
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while ( String[Result] != '\0' )
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{
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Result++;
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}
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return Result;
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}
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DUAL_FUNCTION(char*, strcpy, Copy, (char* Dest, const char* Src))
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{
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char* OriginalDest = Dest;
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while ( *Src != '\0' )
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{
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*Dest = *Src;
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Dest++; Src++;
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}
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return OriginalDest;
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}
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DUAL_FUNCTION(char*, strcat, Cat, (char* Dest, const char* Src))
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{
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char* OriginalDest = Dest;
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while ( *Dest != '\0' ) { Dest++; }
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while ( *Src != '\0' )
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{
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*Dest = *Src;
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Dest++; Src++;
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}
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return OriginalDest;
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}
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DUAL_FUNCTION(int, strcmp, Compare, (const char* A, const char* B))
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{
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while ( true )
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{
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if ( *A == '\0' && *B == '\0' ) { return 0; }
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if ( *A < *B ) { return -1; }
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if ( *A > *B ) { return 1; }
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A++; B++;
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}
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}
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char* Clone(const char* Input)
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{
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size_t InputSize = Length(Input);
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char* Result = new char[InputSize + 1];
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if ( Result == NULL ) { return NULL; }
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Memory::Copy(Result, Input, InputSize + 1);
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return Result;
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}
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#if 0
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char* Combine(size_t NumParameters, ...)
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{
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va_list param_pt;
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va_start(param_pt, NumParameters);
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// First calculate the string length.
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size_t ResultLength = 0;
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const char* TMP = 0;
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for ( size_t I = 0; I < NumParameters; I++ )
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{
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TMP = va_arg(param_pt, const char*);
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if ( TMP != NULL ) { ResultLength += strlen(TMP); }
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}
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// Allocate a string with the desired length.
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char* Result = new char[ResultLength+1];
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Result[0] = 0;
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va_end(param_pt);
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va_start(param_pt, NumParameters);
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size_t ResultOffset = 0;
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for ( size_t I = 0; I < NumParameters; I++ )
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{
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TMP = va_arg(param_pt, const char*);
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if ( TMP )
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{
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size_t TMPLength = strlen(TMP);
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strcpy(Result + ResultOffset, TMP);
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ResultOffset += TMPLength;
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}
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}
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return Result;
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}
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#endif
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}
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}
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