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Diffstat (limited to 'README')

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1 files changed, 2 insertions, 2 deletions

/****************************************************************************** * * 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 <stdio.h> #include "qgstring.h" #include <assert.h> #define BLOCK_SIZE 64 #define ROUND_SIZE(x) ((x)+BLOCK_SIZE-1)&~(BLOCK_SIZE-1) #define DBG_STR(x) do { } while(0) //#define DBG_STR(x) printf x QGString::QGString() // make null string : m_data(0), m_len(0), m_memSize(0) { DBG_STR(("%p: QGString::QGString() %d:%s\n",this,m_len,m_data?m_data:"<none>")); } QGString::QGString(uint size) { if (size==0) { m_data=0; m_len=0; } else { m_memSize = ROUND_SIZE(size+1); m_data = (char*)malloc(m_memSize); memset(m_data,' ',size); m_data[size]='\0'; m_len=size; } DBG_STR(("%p: QGString::QGString(uint size=%d) %d:%s\n", this,size,m_len,m_data?m_data:"<none>")); } 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); } DBG_STR(("%p: QGString::QGString(const QGString &) %d:%s\n",this,m_len,m_data?m_data:"<none>")); } 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); } DBG_STR(("%p: QGString::QGString(const char *) %d:%s\n",this,m_len,m_data?m_data:"<none>")); } QGString::~QGString() { free(m_data); m_data=0; DBG_STR(("%p: QGString::~QGString() %d:%s\n",this,m_len,m_data?m_data:"<none>")); } bool QGString::resize( uint newlen ) { m_len = 0; if (newlen==0) { if (m_data) { free(m_data); m_data=0; } m_memSize=0; DBG_STR(("%p: 1.QGString::resize() %d:%s\n",this,m_len,m_data?m_data:"<none>")); 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) { DBG_STR(("%p: 2.QGString::resize() %d:%s\n",this,m_len,m_data?m_data:"<none>")); return FALSE; } m_data[newlen]='\0'; m_len = qstrlen(m_data); DBG_STR(("%p: 3.QGString::resize() %d:%s\n",this,m_len,m_data?m_data:"<none>")); return TRUE; } bool QGString::enlarge( uint newlen ) { if (newlen==0) { if (m_data) { free(m_data); m_data=0; } m_memSize=0; m_len=0; return TRUE; } uint newMemSize = ROUND_SIZE(newlen+1); if (newMemSize==m_memSize) return TRUE; m_memSize = newMemSize; 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'; if (m_len>newlen) m_len=newlen; return TRUE; } void QGString::setLen( uint newlen ) { m_len = newlen<=m_memSize ? newlen : m_memSize; } 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); } DBG_STR(("%p: QGString::operator=(const QGString &%p) %d:%s\n", this,&s,m_len,m_data?m_data:"<none>")); 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); } DBG_STR(("%p: QGString::operator=(const char *) %d:%s\n",this,m_len,m_data?m_data:"<none>")); 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 (newData) { m_data = newData; memcpy( m_data + len1, s, len2 + 1 ); } m_len = len1+len2; DBG_STR(("%p: QGString::operator+=(const QGString &) %d:%s\n",this,m_len,m_data?m_data:"<none>")); 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; DBG_STR(("%p: QGString::operator+=(const char *) %d:%s\n",this,m_len,m_data?m_data:"<none>")); 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++; DBG_STR(("%p: QGString::operator+=(char s) %d:%s\n",this,m_len,m_data?m_data:"<none>")); return *this; }


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