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

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#ifndef __J2K__JString_Data_CPP__
#define __J2K__JString_Data_CPP__

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

////////////////////////////////////////////////////////////////////////////
/// Utilities and function helper                                        ///
////////////////////////////////////////////////////////////////////////////
void JStringData::Init(const char* s, size_t nBuffer) {
  if ( s == NULL  ||  *s == '\0' ) {
    InitBuffer( nBuffer, '\0' );
  } else {
    length = strlen( s );

    if (nBuffer > length) {
     bufferSize = nBuffer;
    } else {
     bufferSize = length;
    }

    data = new char[ bufferSize + 1 ];
    assert( data != NULL );  // Exit if memory not allocated.
    data[length] = '\0';
    memcpy( data, s, length );

    assert( data[length]     == '\0' );
    assert( data[bufferSize] == '\0' );

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

  Completely useless assignment. If you're really paranoid at
  least change it to assert(data[lenght]=='\0').

  ok.
  done.

*************************************************************/
  }
}

void JStringData::InitBuffer( size_t 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';

    /*
    size_t i = 0;
    for( ; i < nRepeat; i++) { 
      data[i] = fill;
    }
    for( i = nRepeat; i <= bufferSize; i++) { 
      data[i] = '\0';
    }
    */
  } else {
    bufferSize = 0;
    data = NULL;
  }
}

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


  memset( data, fill, bufferSize );


 
  // Clear memory with NULLs
  /*
  for( size_t 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

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