ustring.cpp
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上传日期:2009-03-27
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- /*****************************************************************************
- * ustring.cpp
- *****************************************************************************
- * Copyright (C) 2003 VideoLAN
- * $Id: ustring.cpp 7258 2004-04-03 10:55:51Z asmax $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- * Olivier Teuli鑢e <ipkiss@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- #include <string.h>
- #include "ustring.hpp"
- const uint32_t UString::npos = 0xffffffff;
- UString::UString( const UString &rOther ): SkinObject( rOther.getIntf() )
- {
- m_length = rOther.m_length;
- m_pString = new uint32_t[m_length + 1];
- memcpy( m_pString, rOther.m_pString, 4 * m_length + 4);
- }
- UString::UString( intf_thread_t *pIntf, const char *pString ):
- SkinObject( pIntf )
- {
- // First we compute the length of the string
- const char *pCur = pString;
- for( m_length = 0; pCur && *pCur; m_length++ )
- {
- if( (*pCur & 0xfc) == 0xfc )
- {
- pCur += 6;
- }
- else if ( (*pCur & 0xf8 ) == 0xf8 )
- {
- pCur += 5;
- }
- else if ( (*pCur & 0xf0 ) == 0xf0 )
- {
- pCur += 4;
- }
- else if ( (*pCur & 0xe0 ) == 0xe0 )
- {
- pCur += 3;
- }
- else if ( (*pCur & 0xc0 ) == 0xc0 )
- {
- pCur += 2;
- }
- else
- {
- pCur++;
- }
- }
- if( !pCur || *pCur )
- {
- msg_Err( pIntf, "Invalid UTF8 string: %s", pString );
- m_length = 0;
- m_pString = NULL;
- return;
- }
- m_pString = new uint32_t[m_length + 1];
- // Convert the UTF8 string into UNICODE
- pCur = pString;
- uint32_t aChar = 0; // current unicode character
- int remaining = 0; // remaining bytes
- for( uint32_t i = 0; i <= m_length; i++ )
- {
- if( (*pCur & 0xfc) == 0xfc )
- {
- aChar = *pCur & 1;
- remaining = 5;
- }
- else if ( (*pCur & 0xf8 ) == 0xf8 )
- {
- aChar = *pCur & 3;
- remaining = 4;
- }
- else if ( (*pCur & 0xf0 ) == 0xf0 )
- {
- aChar = *pCur & 7;
- remaining = 3;
- }
- else if ( (*pCur & 0xe0 ) == 0xe0 )
- {
- aChar = *pCur & 15;
- remaining = 2;
- }
- else if ( (*pCur & 0xc0 ) == 0xc0 )
- {
- aChar = *pCur & 31;
- remaining = 1;
- }
- else
- {
- aChar = *pCur;
- remaining = 0;
- }
- while( remaining )
- {
- pCur++;
- remaining--;
- aChar = ( aChar << 6 ) | ( *pCur & 0x3f );
- }
- m_pString[i] = aChar;
- pCur++;
- }
- m_pString[m_length] = 0;
- }
- UString::~UString()
- {
- if( m_pString )
- {
- delete[] m_pString;
- }
- }
- bool UString::operator ==( const UString &rOther ) const
- {
- if( size() != rOther.size() )
- {
- return false;
- }
- for( uint32_t i = 0; i < size(); i++ )
- {
- if( m_pString[i] != rOther.m_pString[i] )
- {
- return false;
- }
- }
- return true;
- }
- bool UString::operator !=( const UString &rOther ) const
- {
- return !(*this == rOther);
- }
- bool UString::operator <( const UString &rOther ) const
- {
- const uint32_t *pOther = rOther.u_str();
- uint32_t i;
- for( i = 0; i < __MIN(m_length, rOther.length()); i++ )
- {
- if( m_pString[i] < pOther[i] )
- {
- return true;
- }
- else if( m_pString[i] > pOther[i] )
- {
- return false;
- }
- }
- return( m_pString[i] < pOther[i] );
- }
- bool UString::operator <=( const UString &rOther ) const
- {
- return !( rOther < *this );
- }
- bool UString::operator >( const UString &rOther ) const
- {
- return ( rOther < *this );
- }
- bool UString::operator >=( const UString &rOther ) const
- {
- return !( *this < rOther );
- }
- void UString::operator =( const UString &rOther )
- {
- m_length = rOther.m_length;
- delete[] m_pString;
- m_pString = new uint32_t[size() + 1];
- for( uint32_t i = 0; i <= size(); i++ )
- {
- m_pString[i] = rOther.m_pString[i];
- }
- }
- void UString::operator +=( const UString &rOther )
- {
- int tempLength = this->length() + rOther.length();
- uint32_t *pTempString = new uint32_t[tempLength + 1];
- // Copy the first string
- memcpy( pTempString, this->m_pString, 4 * this->size() );
- // Append the second string
- // memcpy( pTempString + 4 * size(), rOther.m_pString,
- // 4 * rOther.size() );
- for( uint32_t i = 0; i < rOther.size(); i++ )
- {
- pTempString[this->size() + i] = rOther.m_pString[i];
- }
- pTempString[tempLength] = 0;
- // Set the string internally
- delete[] m_pString;
- m_pString = pTempString;
- m_length = tempLength;
- }
- const UString UString::operator +( const UString &rOther ) const
- {
- UString result( *this );
- result += rOther;
- return result;
- }
- const UString UString::operator +( const char *pString ) const
- {
- UString temp( getIntf(), pString );
- return (*this + temp );
- }
- void UString::debug() const
- {
- char *s = new char[size() + 1];
- for( uint32_t i = 0; i < size(); i++ )
- {
- s[i] = (char)m_pString[i];
- }
- s[size()] = ' ';
- msg_Err( getIntf(), "%s", s );
- delete[] s;
- }
- uint32_t UString::find( const UString &str, uint32_t position ) const
- {
- uint32_t pos;
- for( pos = position; pos + str.size() <= size(); pos++ )
- {
- bool match = true;
- for( uint32_t i = 0; i < str.size(); i++ )
- {
- if( m_pString[pos + i] != str.m_pString[i] )
- {
- match = false;
- break;
- }
- }
- // Found
- if( match )
- {
- return pos;
- }
- }
- // Not found
- return npos;
- }
- uint32_t UString::find( const char *pString, uint32_t position ) const
- {
- UString tmp( getIntf(), pString );
- return find( tmp, position );
- }
- void UString::replace( uint32_t position, uint32_t n1, const UString &str )
- {
- UString start( substr( 0, position ) );
- UString end( substr( position + n1 ) );
- *this = start + str + end;
- }
- void UString::replace( uint32_t position, uint32_t n1, const char *pString )
- {
- replace( position, n1, UString( getIntf(), pString ) );
- }
- UString UString::substr( uint32_t position, uint32_t n) const
- {
- UString tmp( getIntf(), "" );
- if( position > size() )
- {
- msg_Err( getIntf(), "Invalid position in UString::substr()" );
- return tmp;
- }
- tmp.m_length = (n < size() - position) ? n : size() - position;
- delete[] tmp.m_pString;
- tmp.m_pString = new uint32_t[tmp.size() + 1];
- for( uint32_t i = 0; i < tmp.size(); i++ )
- {
- tmp.m_pString[i] = m_pString[position + i];
- }
- return tmp;
- }