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/******************************************************************************
*
* Copyright (C) 1997-2004 by Dimitri van Heesch.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation under the terms of the GNU General Public License is hereby
* granted. No representations are made about the suitability of this software
* for any purpose. It is provided "as is" without express or implied warranty.
* See the GNU General Public License for more details.
*
* Documents produced by Doxygen are derivative works derived from the
* input used in their production; they are not affected by this license.
*
*/
#include "qgstring.h"
#include <assert.h>
#define BLOCK_SIZE 64
#define ROUND_SIZE(x) ((x)+BLOCK_SIZE-1)&~(BLOCK_SIZE-1)
QGString::QGString() // make null string
: m_data(0), m_len(0), m_memSize(0)
{
}
QGString::QGString(uint size)
{
m_memSize = ROUND_SIZE(size);
if (m_memSize==0)
{
m_data=0;
m_len=0;
}
else
{
m_data = (char*)malloc(m_memSize);
m_data[0]='\0';
m_len=0;
}
}
QGString::QGString( const QGString &s )
{
if (s.m_memSize==0)
{
m_data = 0;
m_len = 0;
m_memSize = 0;
}
else
{
m_data = (char *)malloc(s.m_memSize);
m_len = s.m_len;
m_memSize = s.m_memSize;
qstrcpy(m_data,s.m_data);
}
}
QGString::QGString( const char *str )
{
if (str==0)
{
m_data=0;
m_len=0;
m_memSize=0;
}
else
{
m_len = qstrlen(str);
m_memSize = ROUND_SIZE(m_len+1);
assert(m_memSize>=m_len+1);
m_data = (char *)malloc(m_memSize);
qstrcpy(m_data,str);
}
}
QGString::~QGString()
{
free(m_data);
m_data=0;
}
bool QGString::resize( uint newlen )
{
m_len = 0;
if (newlen==0)
{
if (m_data) { free(m_data); m_data=0; }
m_memSize=0;
return TRUE;
}
m_memSize = ROUND_SIZE(newlen+1);
assert(m_memSize>=newlen+1);
if (m_data==0)
{
m_data = (char *)malloc(m_memSize);
}
else
{
m_data = (char *)realloc(m_data,m_memSize);
}
if (m_data==0) return FALSE;
m_data[newlen-1]='\0';
m_len = qstrlen(m_data);
return TRUE;
}
QGString &QGString::operator=( const QGString &s )
{
if (m_data) free(m_data);
if (s.m_memSize==0) // null string
{
m_data = 0;
m_len = 0;
m_memSize = 0;
}
else
{
m_len = s.m_len;
m_memSize = s.m_memSize;
m_data = (char*)malloc(m_memSize);
qstrcpy(m_data,s.m_data);
}
return *this;
}
QGString &QGString::operator=( const char *str )
{
if (m_data) free(m_data);
if (str==0) // null string
{
m_data = 0;
m_len = 0;
m_memSize = 0;
}
else
{
m_len = qstrlen(str);
m_memSize = ROUND_SIZE(m_len+1);
assert(m_memSize>=m_len+1);
m_data = (char*)malloc(m_memSize);
qstrcpy(m_data,str);
}
return *this;
}
QGString &QGString::operator+=( const QGString &s )
{
if (s.m_memSize==0) return *this;
uint len1 = length();
uint len2 = s.length();
uint memSize = ROUND_SIZE(len1 + len2 + 1);
assert(memSize>=len1+len2+1);
char *newData = memSize!=m_memSize ? (char*)realloc( m_data, memSize ) : m_data;
m_memSize = memSize;
if (m_data)
{
m_data = newData;
memcpy( m_data + len1, s, len2 + 1 );
}
return *this;
}
QGString &QGString::operator+=( const char *str )
{
if (!str) return *this;
uint len1 = length();
uint len2 = qstrlen(str);
uint memSize = ROUND_SIZE(len1 + len2 + 1);
assert(memSize>=len1+len2+1);
char *newData = memSize!=m_memSize ? (char *)realloc( m_data, memSize ) : m_data;
m_memSize = memSize;
if (newData)
{
m_data = newData;
memcpy( m_data + len1, str, len2 + 1 );
}
m_len+=len2;
return *this;
}
QGString &QGString::operator+=( char c )
{
uint len = m_len;
uint memSize = ROUND_SIZE(len+2);
assert(memSize>=len+2);
char *newData = memSize!=m_memSize ? (char *)realloc( m_data, memSize ) : m_data;
m_memSize = memSize;
if (newData)
{
m_data = newData;
m_data[len] = c;
m_data[len+1] = '\0';
}
m_len++;
return *this;
}
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