Search  

---

C:/temp/src/j2k/Deprecated/old_18mar_diff/Str14dec/StrData.cpp

Go to the documentation of this file.

#ifndef __J2K__JString_Data_CPP__
#define __J2K__JString_Data_CPP__

#include <j2k/Fred/String/StrData.hpp>

////////////////////////////////////////////////////////////////////////////
/// Utilities and function helper                                        ///
////////////////////////////////////////////////////////////////////////////

/*
 if strlen(s) > nBuffer then rip-off, used by at() functions.
*/

void JStringData::Init(const char* s, ULONG nBuffer) 
{
  if ( s == NULL  ||  *s == '\0' ) {
    InitBuffer( nBuffer, '\0' );
  } else {
    bufferSize = nBuffer;

    data = new char[ bufferSize + 1 ];
    assert( data != NULL );  // Exit if memory not allocated.
    memcpy( data, s, nBuffer );

    data[ nBuffer ] = '\0';  // Needed if we rip-off strings
  }
}

void JStringData::InitBuffer( ULONG nRepeat, char fill ) {
  if ( nRepeat > 0 ) {
    if ( bufferSize < nRepeat ) {
      bufferSize = nRepeat;
    }
    data = new char[ bufferSize + 1];
    assert( data != NULL );  // Exit if memory not allocated.

    // Clear memory with NULLs
    memset( data, fill, nRepeat );
    memset( data + nRepeat, 0, bufferSize - nRepeat );

    data[nRepeat]    = '\0';
    data[bufferSize] = '\0';

  } else {
    bufferSize = 0;
    data = NULL;
  }
}

void JStringData::Clear( char fill ) {
  if ( data == NULL ) return;


  memset( data, fill, bufferSize );


 
  // Clear memory with NULLs
  /*
  for( ULONG i = 0; i < bufferSize; i++) { 
    data[i] = fill;
  }
  */

  data[bufferSize] = '\0';

  if ( fill != '\0' ) {
    length = bufferSize;
  } else {
    length = 0;
  }

/** ANDREA ***************************************************

  Why not using memset ? 

  ughhh, didn't know that.
  I see in Watcom C++ Ref that it exist really,
  will it be faster?

  Now, I know and it's very cool to use it ! =]

*************************************************************/

}

const JStringData& JStringData::operator=(const JStringData& sd) {
  nbRefs = 1;
  Init( sd.data, sd.bufferSize );
  return *this;
}

#endif

---