Source code

/*
 * StringBuffer.h 
 * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


// VIZ++2000
// 2000/11/11
#pragma once

#include <viz++\Object.h>
#include <viz++\String.h>
#include <viz++\InvalidArgumentException.h>

namespace VIZ {

class StringBuffer :public Object{
private:
  TCHAR*  buffer;
  int    size;
  int    increment;
  int    position;

  //2008/07/06
public:

  StringBuffer(int s =SIZE_1KB, int inc = SIZE_128B)
    :size(s), increment(inc), buffer(NULL),
    position(0)
  { 
    if (size<=0 || increment<=0) {
      throw InvalidArgumentException("StringBuffer::StringBuffer,1,InvalidArgument");  
    }

    this->buffer = new TCHAR[size+1];
    memset(this->buffer, (TCHAR)0, size+1);
  }

public:
  ~StringBuffer()
  {
    if (this->buffer) {
      delete [] this->buffer;
      this->buffer = NULL;
    }
  }

public:
  void clear()
  {
    this->position = 0;
    if (this->buffer) {
      //delete [] this->buffer;
    
      //this->size = SIZE_1KB; // 2008/07/05
      //this->buffer = new TCHAR[size+1];
      memset(this->buffer, (TCHAR)0, size+1);
    }
  }

public:
  bool append(TCHAR ch)
  {  
    if (position >=size) {
      size += increment;
      TCHAR* temp = new TCHAR[size+1];
      if (temp == NULL) {
        return false;
      }
      memset(temp, (TCHAR)0, size+1);
      memcpy(temp, buffer, position);
      delete [] buffer;
      buffer = temp;
    }

    *(buffer+position) = ch;
    position++;
    *(buffer+position) = ZERO;

    return true;
  }

public:
  bool append(const TCHAR* string)
  {
    bool rc = true;
    if (string) {
      int len = strlen(string);
      for (int i = 0; i<len; i++) {
        rc = append(*string++);
      }
    }
    return rc;
  }


//<added date="2000/11/10">
public:
  bool append(int num)
  {
    TCHAR integer[80];
    _stprintf_s(integer, CountOf(integer), _T("%d"), num);
    return append(integer);
  }

public:
  bool append(float num)
  {
    TCHAR integer[80];
    _stprintf_s(integer, CountOf(integer), _T("%f"), num);
    return append(integer);
  }

public:
  bool append(String& string)
  {
    return append((const TCHAR*)string);
  }

public:
  String* newString() 
  {
    //buffer is NULL terminated
    return new String(this->buffer);  
  }
//<added>

public:
  const TCHAR* find(const TCHAR* string)
  {
    const TCHAR* ptr = NULL;
    if (buffer && string) {
      ptr = strstr(buffer, string);
    }
    return string;
  }

public:
  const TCHAR* getBuffer() const { 
    return this->buffer; 
  }

public:
  operator const TCHAR*() const{
    return this->buffer;
  }

public:
  String*    getString() const { 
    return new String(this->buffer); 
  }

public:
  int      getSize() const  { 
    return this->size; 
  }

public:
  int      getContentSize() const { 
    return this->position; 
  }

};

}