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//####COPYRIGHTBEGIN####

//                                                                          

// ----------------------------------------------------------------------------

// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.

//

// This program is part of the eCos host tools.

//

// 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  02111-1307, USA.

//

// ----------------------------------------------------------------------------

//                                                                          

//####COPYRIGHTEND####

// include winsock2.h early to eliminate fd_set warning

#ifdef __CYGWIN__

#include <winsock2.h>

#endif

#include "Collections.h"

void String::Format (LPCTSTR  const pszFormat,...)

{

  va_list args;

  va_start(args, pszFormat);

  vFormat(pszFormat,args);

  va_end(args);

}

String String::SFormat (LPCTSTR  const pszFormat,...)

{

  String s;

  va_list args;

  va_start(args, pszFormat);

  s.vFormat(pszFormat,args);

  va_end(args);

  return s;

}

void String::vFormat(LPCTSTR  pszFormat, va_list marker)

{

  for(int nLength=100;nLength;) {

    TCHAR *buf=new TCHAR[1+nLength];

    int n=_vsntprintf(buf, nLength, pszFormat, marker );

    if(-1==n){

      nLength*=2;  // NT behavior

    } else if (n<nLength){

      string::operator=(buf);

      nLength=0;   // trigger exit from loop

    } else {

      nLength=n+1; // UNIX behavior generally, or NT behavior when buffer size exactly matches required length

    }

    delete [] buf;

  }

}

TCHAR * String::GetBuffer(unsigned int nLength)

{

  assert(NULL==m_pszBuf);

  nLength=MAX(nLength,size()); // to accommodate _tcscpy below

  m_pszBuf=new TCHAR[1+nLength];

  m_nBufferLength=nLength;

  _tcscpy(m_pszBuf,c_str());

  return m_pszBuf;

}

void String::ReleaseBuffer()

{

  assert(m_pszBuf);

  m_pszBuf[m_nBufferLength]=_TCHAR('\0'); // just in case the terminating null has been forgotten

  string::operator=(m_pszBuf);

  delete [] m_pszBuf;

  m_pszBuf=0;

}

String String::CStrToUnicodeStr(const char *psz)

{

  String str;

#ifdef _UNICODE

  int nLength=1+strlen(psz);

  MultiByteToWideChar(CP_ACP, 0, psz, -1, str.GetBuffer(nLength), nLength);

  str.ReleaseBuffer();

#else

  str=psz;

#endif

  return str;

}

int String::Chop(StringArray &ar,TCHAR cSep,bool bObserveStrings/*=TRUE*/) const

{

  assert('\0'!=cSep);

#define IsSep(c) (cSep==_TCHAR(' ')?_istspace(c):c==cSep)

  LPCTSTR c=c_str();

  ar.clear();

  while(*c){

    // Spaces are slightly different from other separators - we treat multiple instances as

    // just one (a la sscanf)

    if(_istspace(cSep)){

      while(IsSep(*c))c++;

    } else if (ar.size()>0) {

      c++;

    }

    if(*c){

      String strTok;

      if(bObserveStrings){

        bool bInString=false;

        do{

          if(*c==_TCHAR('\\') && c[1]){

            strTok+=c[1];

            c++;

          } else if(*c==_TCHAR('"')){

            bInString ^= 1;

          } else if (!bInString && IsSep(*c)) {

            break;

          } else {

            strTok+=*c;

          }

        } while (*++c);

      } else {

        do {

          if(IsSep(*c)) {

            break;

          } else {

            strTok+=*c;

          }

        } while (*++c);

      }

      ar.push_back(strTok);

    }

  }

  return ar.size();

}

char * String::GetCString() const

{

  char *psz=new char[1+size()];

#ifdef _UNICODE

  WideCharToMultiByte(CP_ACP, 0, c_str(), -1, psz, 1+size(), NULL, NULL);

#else

  strcpy(psz,c_str());

#endif

  return psz;

}

void String::Replace(LPCTSTR psz1, LPCTSTR psz2, bool bObserveEscapes)

{

  for(unsigned int nOffset=0;nOffset<size();){

    LPCTSTR psz=c_str()+nOffset;

    const TCHAR *pc=_tcsstr(psz,psz1);

    if(pc){

      if(bObserveEscapes && pc>psz && _TCHAR('\\')==pc[-1]){

        // Substitution protected by escape

        nOffset=(pc-psz)+_tcslen(psz1);

      } else {

        String strNew(psz,pc-psz); // before the substitution

        strNew+=psz2;              // substitution text

        pc+=_tcslen(psz1);         // past the substituted text

        strNew+=pc;                // after the substitution

        string::operator=(strNew);

        nOffset=(pc-psz)+_tcslen(psz2);

      }

    } else {

      break;

    }

  }

}