知識+ 拆解字串Class

// ===================================================================
// 20090328 知識 +
// http://tw.knowledge.yahoo.com/question/question?qid=1509032810921
// 發問者 : http://tw.knowledge.yahoo.com/my/my?show=AF03295403
// ===================================================================

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

class SplitString
{
private:
  char *m_String;
  char *m_Split;
  int *m_Index;
  int m_Count;
  int m_len;

public:
  SplitString(const char *inString,const char *inSplit)
  {
    m_String=NULL;
    m_Split=NULL;
    m_Index=NULL;
    m_Count=0;
    m_len=0;
    SetString(inString);
    SetSplit(inSplit);
  }

  ~SplitString()
  {
    if(m_String!=NULL)
      delete [] m_String;
    if(m_Split!=NULL)
      delete [] m_Split;
    if(m_Index!=NULL)
      delete [] m_Index;
  }

  void SetString(const char *inString)
  {
    if(m_String!=NULL)
      delete [] m_String;
    m_len  = (int)strlen(inString)+1;
    m_String = new char[m_len*2];
    strcpy(m_String, inString);
    SetSplit(m_Split);
  }

  bool SetSplit(const char *inSplit)
  {
    if(m_String==NULL || m_len==0 )
      return false;
    char * string2 = &m_String[m_len];
    strcpy(string2, m_String);

    m_Count = 0;
    if (m_Index!=NULL)
      delete [] m_Index;
    if(inSplit==NULL)
    {
      if(m_Split!=NULL)
        delete [] m_Split;
      m_Split = NULL;
      return true;
    }
    int len = strlen(inSplit)+1;
    if(m_Split != inSplit)
    {
      if(m_Split!=NULL)
        delete [] m_Split;
      m_Split = new char[len];
      strcpy(m_Split, inSplit);
    }
 
    for(int i=m_len-2; i>=0; i--)
    {
      for(int j=len-2; j>=0; j--)
        if(string2[i]==m_Split[j])
        {
          string2[i]='\0';
          break;
        }
    }
    m_Index = new int[m_len];
    for(int i=0;i<m_len-1; i++)
    {
      if(string2[i]=='\0') continue;
      m_Index[m_Count++] = i;
      while(string2[++i]!='\0');
    }
    m_Index[m_Count]=m_len-1;
    return true;
  }

  const char * GetSplitString(int index)
  {
    if(index<0 || m_String==NULL || m_len==0 )
      return m_String;
    char * string2 = &m_String[m_len];
    if(index>m_Count)
      index = m_Count;
    return (&string2[m_Index[index]]);
  }

  int Count(void)
  {
    if(m_String==NULL || m_len==0 )
      return 0;
    return m_Count;
  }
};

int main()
{
  SplitString str("123,456,789,AAA",",");
  int count = str.Count();
  printf("\nCount = %d;  string=\"%s\"\n", count, str.GetSplitString(-1));
  for(int i=0; i<=count; i++)
      printf("\nSplit[%d] : %s", i, str.GetSplitString(i));

  str.SetString("A \"contributor\" is any person that distributes its contribution under this license.");
  str.SetSplit(" .\"");
  count = str.Count();
  printf("\n\nCount = %d;  string=\"%s\"\n", count, str.GetSplitString(-1));
  for(int i=0; i<=count; i++)
      printf("\nSplit[%d] : %s", i, str.GetSplitString(i));
  return 0;
}