Blame qtools/qcstring.cpp

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/******************************************************************************
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 *
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 * Copyright (C) 1997-2015 by Dimitri van Heesch.
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 *
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 * Permission to use, copy, modify, and distribute this software and its
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 * documentation under the terms of the GNU General Public License is hereby
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 * granted. No representations are made about the suitability of this software
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 * for any purpose. It is provided "as is" without express or implied warranty.
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 * See the GNU General Public License for more details.
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 *
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 * Documents produced by Doxygen are derivative works derived from the
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 * input used in their production; they are not affected by this license.
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 *
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 */
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#include "qcstring.h"
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#include "qgstring.h"
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#include <qstring.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include <qregexp.h>
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#include <qdatastream.h>
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QCString &QCString::sprintf( const char *format, ... )
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{
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  va_list ap;
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  va_start( ap, format );
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  const int minlen=256;
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  int l = length();
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  if (l
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  int n=vsnprintf( rawData(), l, format, ap);
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  if (n<0) n=l;
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  resize(n+1);
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  va_end( ap );
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  return *this;
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}
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int QCString::find( char c, int index, bool cs ) const
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{
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  if (index<0 || index>=(int)length()) return -1; // index outside string
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  register const char *pos;
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  if (cs)
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  {
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    pos = strchr(data()+index,c);
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  }
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  else
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  {
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    pos = data()+index;
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    c = tolower((unsigned char)c);
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    while (*pos && tolower((unsigned char)*pos)!=c) pos++;
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    if (!*pos && c) pos=0; // not found
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  }
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  return pos ? (int)(pos - data()) : -1;
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}
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int QCString::find( const char *str, int index, bool cs ) const
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{
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  int l = length();
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  if (index<0 || index>=l) return -1; // index outside string
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  if (!str)  return -1;               // no string to search for
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  if (!*str) return index;           // empty string matching at index
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  register const char *pos;
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  if (cs) // case sensitive
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  {
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    pos = strstr(data()+index,str);
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  }
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  else // case insensitive
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  {
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    pos = data();
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    int len = qstrlen(str);
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    while (*pos)
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    {
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      if (qstrnicmp(pos,str,len)==0) break;
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      pos++;
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    }
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    if (!*pos) pos = 0; // not found
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  }
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  return pos ? (int)(pos - data()) : -1;
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}
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int QCString::find( const QCString &str, int index, bool cs ) const
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{
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  return find(str.data(),index,cs);
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}
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int QCString::find( const QRegExp &rx, int index ) const
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{
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  QString d = QString::fromLatin1( data() );
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  return d.find( rx, index );
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}
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int QCString::findRev( char c, int index, bool cs) const
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{
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  const char *b = data();
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  const char *pos;
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  int len = length();
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  if (len==0) return -1; // empty string
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  if (index<0) // start from end
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  {
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    if (cs)
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    {
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      pos = strrchr(b,c);
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      return pos ? (int)(pos - b) : -1;
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    }
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    index=len;
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  }
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  else if (index>len) // bad index
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  {
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    return -1;
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  }
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  pos = b+index;
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  if (cs)
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  {
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    while ( pos>=b && *pos!=c) pos--;
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  }
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  else
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  {
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    c = tolower((unsigned char)c);
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    while ( pos>=b && tolower((unsigned char)*pos)!=c) pos--;
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  }
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  return pos>=b ? (int)(pos - b) : -1;
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}
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int QCString::findRev( const char *str, int index, bool cs) const
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{
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  int slen = qstrlen(str);
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  int len = length();
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  if (index<0) index = len-slen; // start from end
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  else if (index>len) return -1; // bad index
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  else if (index+slen>len) index=len-slen; // str would be too long
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  if (index<0) return -1; // no match possible
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  register const char *pos = data()+index;
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  if (cs) // case sensitive
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  {
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    for (int i=index; i>=0; i--) if (qstrncmp(pos--,str,slen)==0) return i;
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  }
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  else // case insensitive
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  {
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    for (int i=index; i>=0; i--) if (qstrnicmp(pos,str,slen)==0) return i;
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  }
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  return -1;
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}
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int QCString::findRev( const QRegExp &rx, int index ) const
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{
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  QString d = QString::fromLatin1( data() );
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  return d.findRev( rx, index );
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}
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int QCString::contains( char c, bool cs ) const
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{
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  if (length()==0) return 0;
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  int count=0;
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  const char *pos = data();
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  if (cs)
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  {
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    while (*pos) if (*pos++ == c) count++;
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  }
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  else
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  {
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    c = tolower((unsigned char)c);
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    while (*pos)
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    {
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      if (tolower((unsigned char)*pos)==c) count++;
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      pos++;
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    }
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  }
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  return count;
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}
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int QCString::contains( const char *str, bool cs ) const
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{
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  if (str==0 || length()==0) return 0;
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  int count=0;
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  const char *pos = data();
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  int len = qstrlen(str);
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  while (*pos)
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  {
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    if (cs)
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    {
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      if (qstrncmp(pos,str,len)==0) count++;
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    }
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    else
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    {
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      if (qstrnicmp(pos,str,len)==0) count++;
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    }
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    pos++;
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  }
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  return count;
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}
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int QCString::contains( const QRegExp &rx ) const
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{
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  QString d = QString::fromLatin1( data() );
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  return d.contains( rx );
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}
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bool QCString::stripPrefix(const char *prefix)
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{
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  if (prefix==0 || length()==0) return FALSE;
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  int len = qstrlen(prefix);
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  if (qstrncmp(prefix,data(),len)==0)
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  {
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    m_rep=mid(len,length()-len).m_rep; // need to make a deep copy
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    return TRUE;
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  }
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  return FALSE;
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}
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QCString QCString::left( uint len )  const
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{
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  if (isEmpty())
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  {
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    return QCString();
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  }
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  else if (len>=length())
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  {
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    return QCString(data());
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  }
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  else
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  {
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    QCString s( len+1 );
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    memcpy( s.rawData(), data(), len);
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    return s;
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  }
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}
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QCString QCString::right( uint len ) const
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{
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  if (isEmpty())
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  {
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    return QCString();
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  }
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  else
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  {
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    int l = length();
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    if ((int)len>l) len=l;
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    const char *pos = data() + (l-len);
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    return QCString(pos);
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  }
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}
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QCString QCString::mid( uint index, uint len) const
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{
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  uint slen = (uint)length();
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  if (len==0xffffffff) len = slen-index;
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  if (isEmpty() || index>=slen || len==0)
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  {
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    return QCString();
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  }
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  else
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  {
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    register const char *p = data()+index;
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    QCString s(len+1);
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    qstrncpy( s.rawData(), p, len+1 );
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    return s;
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  }
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}
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QCString QCString::lower() const
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{
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  if (length()==0) return QCString();
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  QCString s(data());
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  register char *pos = s.rawData();
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  if (pos)
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  {
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    while (*pos)
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    {
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      *pos = tolower((unsigned char)*pos);
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      pos++;
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    }
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  }
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  return s;
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}
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QCString QCString::upper() const
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{
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  if (length()==0) return QCString();
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  QCString s(data());
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  register char *pos = s.rawData();
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  if (pos)
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  {
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    while (*pos)
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    {
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      *pos = toupper((unsigned char)*pos);
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      pos++;
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    }
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  }
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  return s;
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}
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QCString QCString::stripWhiteSpace() const
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{
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  if ( isEmpty() )                            // nothing to do
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    return *this;
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  register const char *cs = data();
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  int reslen = length();
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  if ( !isspace((uchar)cs[0]) && !isspace((uchar)cs[reslen-1]) )
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    return *this;                             // returns a copy
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  QCString result(cs);
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  register char *s = result.rawData();
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  int start = 0;
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  int end = reslen - 1;
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  while ( isspace((uchar) s[start]) )                 // skip white space from start
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    start++;
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  if ( s[start] == '\0' )
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  {                                                   // only white space
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    return QCString();
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  }
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  while ( end && isspace((uchar) s[end]) )            // skip white space from end
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    end--;
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  end -= start - 1;
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  qmemmove( s, &s[start], end );
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  result.resize( end + 1 );
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  return result;
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}
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QCString QCString::simplifyWhiteSpace() const
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{
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  if ( isEmpty() )                            // nothing to do
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    return *this;
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  QCString result( length()+1 );
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  const char *from  = data();
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  char *to    = result.rawData();
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  char *first = to;
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  while ( TRUE )
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  {
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    while ( *from && isspace((uchar) *from) )
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      from++;
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    while ( *from && !isspace((uchar)*from) )
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      *to++ = *from++;
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    if ( *from )
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      *to++ = 0x20;                       // ' '
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    else
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      break;
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  }
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  if ( to > first && *(to-1) == 0x20 )
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    to--;
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  *to = '\0';
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  result.resize( (int)((long)to - (long)result.data()) + 1 );
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  return result;
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}
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QCString &QCString::assign( const char *str )
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{
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  return operator=(str);
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}
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QCString &QCString::insert( uint index, const char *s )
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{
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  int len = s ? qstrlen(s) : 0;
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  if ( len == 0 ) return *this;
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  int olen = length();
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  int nlen = olen + len;
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  if ((int)index>=olen)
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  {
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    resize(nlen+index-olen+1);
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    memset(rawData()+olen, ' ', index-olen);
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    memcpy(rawData()+index,s, len+1);
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  }
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  else
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  {
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    resize(nlen+1);
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    qmemmove(rawData()+index+len,data()+index,olen-index+1);
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    memcpy(rawData()+index,s,len);
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  }
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  return *this;
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}
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QCString &QCString::insert( uint index, char c)
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{
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  char buf[2];
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  buf[0] = c;
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  buf[1] = '\0';
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  return insert( index, buf );
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}
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QCString &QCString::append( const char *s )
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{
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  return operator+=(s);
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}
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QCString &QCString::prepend( const char *s )
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{
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  return insert(0,s);
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}
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QCString &QCString::remove( uint index, uint len )
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{
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  uint olen = length();
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  if ( index + len >= olen ) // range problems
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  {
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    if ( index < olen )  // index ok
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    {
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      resize( index+1 );
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    }
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  }
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  else if ( len != 0 )
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  {
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    QCString tmp(olen-index-len+1);
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    qmemmove( tmp.rawData(), data()+index+len, olen-index-len+1 );
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    resize( olen-len+1 );
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    memcpy( rawData()+index,tmp.data(),tmp.length() );
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  }
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  return *this;
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}
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QCString &QCString::replace( uint index, uint len, const char *s)
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{
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  remove( index, len );
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  insert( index, s );
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  return *this;
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}
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QCString &QCString::replace( const QRegExp &rx, const char *str )
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{
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  QString d = QString::fromLatin1( data() );
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  QString r = QString::fromLatin1( str );
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  d.replace( rx, r );
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  operator=( d.ascii() );
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  return *this;
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}
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short QCString::toShort(bool *ok) const
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{
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  QString s(data());
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  return s.toShort(ok);
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}
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ushort QCString::toUShort(bool *ok) const
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{
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  QString s(data());
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  return s.toUShort(ok);
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}
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int QCString::toInt(bool *ok) const
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{
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  QString s(data());
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  return s.toInt(ok);
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}
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uint QCString::toUInt(bool *ok) const
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{
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  QString s(data());
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  return s.toUInt(ok);
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}
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long QCString::toLong(bool *ok) const
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{
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  QString s(data());
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  return s.toLong(ok);
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}
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ulong QCString::toULong(bool *ok) const
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{
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  QString s(data());
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  return s.toULong(ok);
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}
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uint64 QCString::toUInt64(bool *ok) const
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{
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  QString s(data());
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  return s.toUInt64(ok);
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}
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QCString &QCString::setNum(short n)
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{
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  return setNum((long)n);
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}
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QCString &QCString::setNum(ushort n)
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{
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  return setNum((ulong)n);
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}
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QCString &QCString::setNum(int n)
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{
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  return setNum((long)n);
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}
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QCString &QCString::setNum(uint n)
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{
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  return setNum((ulong)n);
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}
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QCString &QCString::setNum(long n)
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{
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  char buf[20];
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  register char *p = &buf[19];
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  bool neg;
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  if ( n < 0 )
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  {
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    neg = TRUE;
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    n = -n;
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  }
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  else
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  {
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    neg = FALSE;
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  }
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  *p = '\0';
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  do
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  {
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    *--p = ((int)(n%10)) + '0';
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    n /= 10;
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  } while ( n );
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  if ( neg ) *--p = '-';
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  operator=( p );
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  return *this;
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}
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QCString &QCString::setNum( ulong n)
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{
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  char buf[20];
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  register char *p = &buf[19];
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  *p = '\0';
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  do
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  {
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    *--p = ((int)(n%10)) + '0';
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    n /= 10;
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  } while ( n );
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  operator=( p );
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  return *this;
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}
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//-------------------------------------------------
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void *qmemmove( void *dst, const void *src, uint len )
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{
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    register char *d;
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    register char *s;
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    if ( dst > src ) {
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	d = (char *)dst + len - 1;
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	s = (char *)src + len - 1;
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	while ( len-- )
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	    *d-- = *s--;
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    } else if ( dst < src ) {
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	d = (char *)dst;
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	s = (char *)src;
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	while ( len-- )
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	    *d++ = *s++;
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    }
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    return dst;
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}
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char *qstrdup( const char *str )
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{
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    if ( !str )
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	return 0;
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    char *dst = new char[qstrlen(str)+1];
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    CHECK_PTR( dst );
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    return strcpy( dst, str );
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}
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char *qstrncpy( char *dst, const char *src, uint len )
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{
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    if ( !src )
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	return 0;
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    strncpy( dst, src, len );
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    if ( len > 0 )
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	dst[len-1] = '\0';
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    return dst;
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}
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int qstricmp( const char *str1, const char *str2 )
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{
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    register const uchar *s1 = (const uchar *)str1;
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    register const uchar *s2 = (const uchar *)str2;
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    int res;
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    uchar c;
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    if ( !s1 || !s2 )
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	return s1 == s2 ? 0 : (int)((long)s2 - (long)s1);
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    for ( ; !(res = (c=tolower(*s1)) - tolower(*s2)); s1++, s2++ )
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	if ( !c )				// strings are equal
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	    break;
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    return res;
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}
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int qstrnicmp( const char *str1, const char *str2, uint len )
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{
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    register const uchar *s1 = (const uchar *)str1;
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    register const uchar *s2 = (const uchar *)str2;
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    int res;
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    uchar c;
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    if ( !s1 || !s2 )
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	return (int)((long)s2 - (long)s1);
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    for ( ; len--; s1++, s2++ ) {
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	if ( (res = (c=tolower(*s1)) - tolower(*s2)) )
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	    return res;
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	if ( !c )				// strings are equal
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	    break;
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    }
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    return 0;
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}
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#ifndef QT_NO_DATASTREAM
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QDataStream &operator<<( QDataStream &s, const QByteArray &a )
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{
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    return s.writeBytes( a.data(), a.size() );
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}
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QDataStream &operator>>( QDataStream &s, QByteArray &a )
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{
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    Q_UINT32 len;
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    s >> len;					// read size of array
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    if ( len == 0 || s.eof() ) {		// end of file reached
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	a.resize( 0 );
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	return s;
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    }
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    if ( !a.resize( (uint)len ) ) {		// resize array
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#if defined(CHECK_NULL)
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	qWarning( "QDataStream: Not enough memory to read QByteArray" );
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#endif
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	len = 0;
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    }
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    if ( len > 0 )				// not null array
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	s.readRawBytes( a.data(), (uint)len );
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    return s;
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}
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QDataStream &operator<<( QDataStream &s, const QCString &str )
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{
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    return s.writeBytes( str.data(), str.size() );
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}
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QDataStream &operator>>( QDataStream &s, QCString &str )
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{
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    Q_UINT32 len;
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    s >> len;					// read size of string
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    if ( len == 0 || s.eof() ) {		// end of file reached
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	str.resize( 0 );
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	return s;
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    }
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    if ( !str.resize( (uint)len )) {// resize string
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#if defined(CHECK_NULL)
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	qWarning( "QDataStream: Not enough memory to read QCString" );
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#endif
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	len = 0;
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    }
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    if ( len > 0 )				// not null array
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	s.readRawBytes( str.rawData(), (uint)len );
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    return s;
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}
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#endif //QT_NO_DATASTREAM
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inline QCString operator+( const QCString &s1, const QGString &s2 )
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{
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    QCString tmp(s1);
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    tmp += s2.data();
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    return tmp;
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}
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inline QCString operator+( const QGString &s1, const QCString &s2 )
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{
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    QCString tmp(s1.data());
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    tmp += s2;
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    return tmp;
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}
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