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数据结构结课设计——简明汉语词典 - Wayne's Blog
Home 数据结构及算法 数据结构结课设计——简明汉语词典 
/*------------------------------------Main.cpp----------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include <conio.h>

#include "GUI.h"
#include "global.h"
#include "AVL.h"
#include "FileOper.h"
#include "init.h"
#include "menu.h"

int main(int argc,char *argv[])
{
 InitGUI();
 int choose,result;

 if(!InitFile())
 {
  print("初始化文件失败。",RED);
  _getch();
  return -1;
 }
 if(!InitIndex())
 {
  print("初始化索引失败。",RED);
  _getch();
  return -1;
 }

again:
 ShowAVLDepth();
 ShowCount();
 ShowFileSize();
 while(!(choose=GetMouse()));
 text2_y=222;                  //控制台消息输出坐标初始化
 cover(251,222,473,378);
 switch(choose)
 {
 case 1:
  if(!(result=Add_Word()))
  {
   print("添加词条失败。",RED);
  }
  else if(result==1)
  {
   print("添加词条成功。",GREEN);
  }
  else
  {
   print("词库没有变动。",YELLOW);
  }
  break;
 case 2:
  Query();
  InitMenu();
  break;
 case 3:
  if(!OptimizeIndexFile())
  {
   print("优化索引文件失败,索引文件可能已经损坏!",RED);
  }
  else
  {
   print("优化索引文件成功.",GREEN);
  }
  print("是否查看索引文件结构?[Y/N]",GREEN);
  fflush(stdin);
  choose=_getch();
  if(choose=='y' || choose=='Y')
   ShowFile();
  text2_y=222;                  //控制台消息输出坐标初始化
  cover(251,222,473,378);
  break;
 }
 Sleep(500);           //防止鼠标连击
 goto again;
 return 0;
}

/*------------------------------------global.h----------------------------------------------*/

#ifndef _GLOBAL_H_
#define _GLOBAL_H_

#include <windows.h>

//词条结构体
typedef struct
{
 char word[50];               //词条名
 char property[20];           //词性
 char pronunciation[50];      //读音
 char describe[100];          //释义
}WORD_INFO;
/*------------------------AVL----------------------------------------*/
//索引结构体
typedef struct
{
 int ASCII;                //单词ASCII之和
 LARGE_INTEGER Start;      //文件内的起始位置
 unsigned int Count;       //相同ASCII和的词条数目
}INDEXDATA;

//AVL树节点元素
typedef struct BiTree
{
 int balance;              //平衡因子
 INDEXDATA data;           //节点数据
 struct BiTree *left;
 struct BiTree *right;
 struct BiTree *father;    //指向双亲节点
} AVL;

AVL *AVL_ROOT=NULL;                  //AVL树根指针
/*------------------------Stack----------------------------------------*/
#define STACK_DATATYPE AVL*          //栈元素类型为AVL节点指针
typedef struct
{
 STACK_DATATYPE *top;             //栈顶指针
 STACK_DATATYPE *base;            //栈底指针
 int stacksize;             //栈容量
}Stack;

Stack S;                      //栈结构变量
/*------------------------Queue----------------------------------------*/
#define QUEUE_DATATYPE AVL*
typedef struct QueueNode
{
 QUEUE_DATATYPE data;
 struct QueueNode *next;
}QNode;

typedef struct
{
 QNode *start;               //队列起始地址
 QNode *end;                 //队列末尾地址
 int queuesize;              //队列节点个数
}Queue;

/*----------------------------------------------------------------------*/

HANDLE hDataFile;                       //数据库文件句柄
HANDLE hIndexFile;                      //索引文件句柄
LARGE_INTEGER DataFileSize;             //数据库文件大小

const char *IndexFilePath="IndexFile";    //索引文件路径
const char *DataFilePath="DataFile";      //数据库文件路径

#endif        //_GLOBAL_H_

/*------------------------------------unicode.h----------------------------------------------*/

#ifndef _UNICODE_H_
#define _UNICODE_H_

#include <stdio.h>
#include <windows.h>
#include <locale.h>

char *TCHARToChar(LPWSTR lpwszStrIn)
{
 LPSTR pszOut = NULL;
 if (lpwszStrIn != NULL)
 {
  int nInputStrLen = wcslen (lpwszStrIn);
  int nOutputStrLen = WideCharToMultiByte (CP_ACP, 0, lpwszStrIn, nInputStrLen, NULL, 0, 0, 0) + 2;
  pszOut = new char [nOutputStrLen];

  if (pszOut)
  {
   memset (pszOut, 0x00, nOutputStrLen);
   WideCharToMultiByte(CP_ACP, 0, lpwszStrIn, nInputStrLen, pszOut, nOutputStrLen, 0, 0);
  }
 }
 return pszOut;
}
          
TCHAR *CharToTCHAR(const char *str)
{
 TCHAR T[100];
 memset(T,NULL,sizeof(T));
 MultiByteToWideChar(CP_ACP,0,str,-1,T,sizeof(T));
 return T;
}

#endif     //_UNICODE_H_

 


/*------------------------------------GUI.h----------------------------------------------*/

#ifndef _GUI_H_
#define _GUI_H_

#include <graphics.h>
#include <time.h>
#include <windows.h>
#include <tchar.h>

#include "unicode.h"
#include "global.h"

int InitGUI();
int InitMenu();
void print(char *str,int color);
void cover(int x,int y,int width,int height);
void ShowAVLDepth();
void ShowAuthor();
void ShowCount();
void ShowFileSize();

IMAGE image;
CRITICAL_SECTION cs_image;                    //声明临界区对象

int InitGUI()
{
 InitializeCriticalSection(&cs_image);     //初始化临界区
 initgraph(1000,600);
 SetWindowText(GetHWnd(),_T("汉语词典"));
 loadimage(&image,_T("IMAGE"),_T("BACKGROUND"),1000,600);    //初始化背景图片       
 SetWorkingImage(NULL);
 putimage(0,0,1000,600,&image,0,0);
 setlinecolor(RED);
 setlinestyle(PS_SOLID,2);
 line(0,220,1000,220);
 line(0,345,250,345);
 line(0,470,250,470);
 line(250,220,250,600);
 line(725,220,725,600);
 line(725,408,1000,408);
 setlinestyle(PS_DOT);
 line(725,312,1000,312);
 line(725,504,1000,504);
 InitMenu();
 ShowAuthor();
 return 1;
}

int InitMenu()
{
 cover(40,250,150,50);
 cover(40,370,150,50);
 cover(30,500,190,50);

 settextcolor(GREEN);
 setbkmode(TRANSPARENT);
 settextstyle(15,15,NULL);
 outtextxy(55,270,_T("添加词条"));
 outtextxy(55,395,_T("查找词条"));
 outtextxy(30,525,_T("优化索引文件"));
 return 1;
}

int Depth(AVL *root);
void ShowAVLDepth()
{
 char str[100];
 int depth=0;

 cover(726,221,273,80);
 settextstyle(0,0,NULL);
 settextcolor(GREEN);
 setbkmode(TRANSPARENT);
 memset(str,NULL,sizeof(str));
 if(AVL_ROOT)
  depth=Depth(AVL_ROOT->left);
 else
  depth=0;
 sprintf(str,"AVL左子树深度:%d",depth);
 outtextxy(780,240,CharToTCHAR(str));
 memset(str,NULL,sizeof(str));
 if(AVL_ROOT)
  depth=Depth(AVL_ROOT->right);
 else
  depth=0;
 sprintf(str,"AVL右子树深度:%d",depth);
 outtextxy(780,275,CharToTCHAR(str));

 return;
}

int NodeCount(AVL *root);
int WordCount(AVL *root);
void ShowCount()
{
 char str[100];

 cover(726,314,273,80);
 memset(str,NULL,sizeof(str));
 settextstyle(0,0,NULL);
 settextcolor(GREEN);
 setbkmode(TRANSPARENT);
 memset(str,NULL,sizeof(str));
 sprintf(str,"AVL节点个数:%d",NodeCount(AVL_ROOT));
 outtextxy(785,330,CharToTCHAR(str));
 memset(str,NULL,sizeof(str));
 sprintf(str,"已收录词条个数:%d",WordCount(AVL_ROOT));
 outtextxy(780,365,CharToTCHAR(str));

 return;
}

void ShowFileSize()
{
 char str[50];

 memset(&DataFileSize,NULL,sizeof(LARGE_INTEGER));
 cover(726,410,273,80);
 settextstyle(0,0,NULL);
 settextcolor(GREEN);
 setbkmode(TRANSPARENT);
 GetFileSizeEx(hIndexFile,&DataFileSize);             //获取索引文件大小
 memset(str,NULL,sizeof(str));
 sprintf(str,"索引文件大小:%d字节",DataFileSize.QuadPart);
 outtextxy(775,425,CharToTCHAR(str));
 memset(&DataFileSize,NULL,sizeof(LARGE_INTEGER));
 GetFileSizeEx(hDataFile,&DataFileSize);             //获取索引文件大小
 memset(str,NULL,sizeof(str));
 sprintf(str,"词库文件大小:%d字节",DataFileSize.QuadPart);
 outtextxy(775,465,CharToTCHAR(str));

 return;
}

void ShowAuthor()
{
 settextstyle(0,0,NULL);
 settextcolor(GREEN);
 setbkmode(TRANSPARENT);
 outtextxy(780,540,_T("By:计科12-1班  魏子楠"));
}

int GetMouse()
{
 MOUSEMSG m;                 // 定义鼠标消息
 memset(&m,NULL,sizeof(MOUSEMSG));
 do
 {
  FlushMouseMsgBuffer();
  m=GetMouseMsg();          //获取一条鼠标消息
 }while(!m.mkLButton);         //若鼠标左键按下则退出循环

 if(m.x>0 && m.x<250)
  if(m.y>220 && m.y<345)
   return 1;
  else if(m.y>345 && m.y<470)
   return 2;
  else if(m.y>470 && m.y<600)
   return 3;

  return 0;
}

static int text2_y=222;                 //控制台输出消息坐标
void print(char *str,int color)
{
 char str1[120],str2[60],*p=str;

 memset(str1,NULL,sizeof(str1));
 strcat(str1,p);
 p=str1;
 if(text2_y>558)
 {
  cover(251,222,473,378);
  text2_y=222;
 }
 while(strlen(p)>58)
 {
  memset(str2,NULL,sizeof(str2));
  memcpy(str2,p,58);
  print(str2,color);
  p+=58;
 }
 settextstyle(0,0,NULL);
 settextcolor(color);
 setbkmode(TRANSPARENT);
 outtextxy(252,text2_y,CharToTCHAR(p));
 text2_y+=16;
}

void cover(int x,int y,int width,int height)
{
 IMAGE temp;
 EnterCriticalSection(&cs_image);              //进入临界区
 SetWorkingImage(&image);
 getimage(&temp,x,y,width,height);
 SetWorkingImage(NULL);
 LeaveCriticalSection(&cs_image);              //离开临界区
 putimage(x,y,&temp);
}

#endif    //_GUI_H_

/*------------------------------------stack.h----------------------------------------------*/

#ifndef _STACK_H_
#define _STACK_H_

#include <stdio.h>
#include <stdlib.h>
#include "global.h"
#include "GUI.h"

int InitStack(Stack *S)
{
 if(S->base!=NULL) return 1;                                                  //栈结构已存在,不需要再创造
 S->base=S->top=(STACK_DATATYPE *)malloc(sizeof(STACK_DATATYPE)*5);           //初始化容量为5的栈
 if(S->base==NULL)
 {
  print("malloc error.",RED);
  return 0;
 }
 S->stacksize=5;

 return 1;
}

int Push(Stack *S,STACK_DATATYPE elem)
{
 if(S->top-S->base==S->stacksize-1)
 {
  //需要为栈申请新的存储空间
  S->base=(STACK_DATATYPE *)realloc(S->base,sizeof(STACK_DATATYPE)*++S->stacksize);
  if(S->base==NULL)
  {
   print("申请新的栈空间失败.",RED);
   return 0;
  }
  S->top=S->base+(S->stacksize-2);
 }
 *S->top=elem;           //数据入栈
 S->top++;               //栈顶指针向后移
 return 1;
}

int StackEmpty(Stack *S)
{
 return S->top-S->base==0?1:0;
}

int Pop(Stack *S,STACK_DATATYPE *elem)
{
 if(StackEmpty(S)) return 0;      //栈已空
 S->top--;                        //栈顶指针向前移动一单位
 *elem=*S->top;                   //栈顶元素出栈
 return 1;
}

#endif    //_STACK_H_


/*------------------------------------queue.h----------------------------------------------*/


#ifndef _QUEUE_H_
#define _QUEUE_H_

#include <stdio.h>
#include <stdlib.h>
#include "global.h"
#include "AVL.h"
#include "GUI.h"

int EnQueue(Queue *Q,QUEUE_DATATYPE elem)
{
 QNode *tmp=NULL;

 tmp=(QNode *)malloc(sizeof(QNode));
 if(tmp==NULL)
 {
  print("申请队列空间失败.",RED);
  return 0;
 }
 memset(tmp,NULL,sizeof(QNode));
 if(Q->start==NULL)
 {
  Q->start=Q->end=tmp;
 }
 else
 {
  Q->end->next=tmp;
  Q->end=tmp;
 }
 Q->end->data=elem;
 Q->queuesize++;

 return 1;
}

int DeQueue(Queue *Q,QUEUE_DATATYPE *elem)
{
 QNode *tmp=NULL;

 if(Q->start==NULL || Q->queuesize==0) return 0;     //队列已空
 *elem=Q->start->data;
 Q->queuesize--;
 tmp=Q->start;
 Q->start=Q->start->next;
 free(tmp);

 return 1;
}


#endif       //_QUEUE_H_

/*------------------------------------AVL.h----------------------------------------------*/


#ifndef _AVL_H_
#define _AVL_H_

#include <windows.h>
#include <string.h>

#include "global.h"
#include "FileOper.h"
#include "stack.h"
#include "GUI.h"

int Depth(AVL *root)
{
 //计算树的深度。
 if(root==NULL)
  return 0;
 int i,j;

 if(root->left)
  i=Depth(root->left);
 else
  i=0;

 if(root->right)
  j=Depth(root->right);
 else
  j=0;

 return i>j?i+1:j+1;
}

void updateBF(AVL *NewNode)
{
 //更新平衡因子
 if(!NewNode || !NewNode->father) return;
 AVL *CurrNode=NewNode;
 AVL *PreNode=CurrNode->father;

 if(CurrNode==PreNode->left)
 {
  //指针从左路回溯
  PreNode->balance++;
  if(PreNode->balance==2) return;
  if(PreNode->left && PreNode->right)   //遇到有两个孩子的节点
   if(PreNode->balance<=0)
    return;
 }
 else
 {
  //指针从右路回溯
  PreNode->balance--;
  if(PreNode->balance==-2) return;
  if(PreNode->left && PreNode->right)
   if(PreNode->balance>=0)
    return;
 }
 updateBF(PreNode);

 return;
}

void RR_Rotate(AVL **root,AVL *centreNode)
{
 //向右旋转,RR型。
 AVL *temp=NULL;

 if(centreNode->right)
 {
  //中心节点的右节点不为空
  centreNode->father->left=centreNode->right;     //将中心节点的右子树连接到双亲节点的左子树上。
  centreNode->right->father=centreNode->father;
 }
 else
  //中心节点的右节点为空
  centreNode->father->left=NULL;

 temp=centreNode->father->father;
 if(centreNode->father->father!=NULL)
  if(centreNode->father->father->left==centreNode->father)
   centreNode->father->father->left=centreNode;
  else
   centreNode->father->father->right=centreNode;
 else
  *root=centreNode;

 centreNode->right=centreNode->father;         //当前节点的双亲成为其右子树。
 centreNode->father->father=centreNode;
 centreNode->father->balance-=2;
 centreNode->father=temp;
 centreNode->balance--;

 return;
}

void LL_Rotate(AVL **root,AVL *centreNode)
{
 //向左旋转,LL型
 AVL *temp=NULL;

 if(centreNode->left)
 {
  //中心节点的左节点不为空
  centreNode->father->right=centreNode->left;    //将中心节点的左子树连接到双亲的右子树上。
  centreNode->left->father=centreNode->father;   //中心节点的左子树的双亲改为中心节点的双亲。
 }
 else
  centreNode->father->right=NULL;

 temp=centreNode->father->father;
 if(centreNode->father->father!=NULL)
  if(centreNode->father->father->left==centreNode->father)
   centreNode->father->father->left=centreNode;
  else
   centreNode->father->father->right=centreNode;
 else
  *root=centreNode;

 centreNode->left=centreNode->father;         //将中心节点的左孩子改为中心节点的双亲
 centreNode->left->father=centreNode;         //将中心节点左孩子的双亲更改为中心节点。
 centreNode->balance++;
 centreNode->father->balance+=2;
 centreNode->father=temp;

 return;
}

void RL_Rotate(AVL **root,AVL *centreNode)
{
 //先右后左旋转
 AVL *temp=NULL;

 temp=centreNode->father;
 centreNode->father->right=centreNode->left;
 centreNode->left->father=centreNode->father;
 centreNode->left->balance--;
 centreNode->balance--;

 if(centreNode->left->right)
 {
  //中心节点的左节点的右孩子不为空。
  temp->right->right->father=centreNode;
 }
 centreNode->left=temp->right->right;
 temp->right->right=centreNode;
 centreNode->father=temp->right;
 if(temp->right->balance==-2)
  temp->right->balance++;
 LL_Rotate(root,temp->right);

 return;
}

void LR_Rotate(AVL **root,AVL *centreNode)
{
 //先左后右旋转，LR型。
 AVL *temp=NULL;

 temp=centreNode->father;
 centreNode->father->left=centreNode->right;
 centreNode->right->father=centreNode->father;
 centreNode->right->balance++;
 centreNode->balance++;

 if(centreNode->right->left)
 {
  //中心节点的左节点的右孩子不为空。
  temp->left->left->father=centreNode;
 }
 centreNode->right=temp->left->left;
 temp->left->left=centreNode;
 centreNode->father=temp->left;
 if(temp->left->balance==2)
  temp->left->balance--;
 RR_Rotate(root,temp->left);

 return;
}

void adjustAVL(AVL **root,AVL *NewNode)
{
 if(!NewNode) return;
 AVL *CurrNode=NewNode;
 AVL *PreNode=NULL;

 while(CurrNode->father!=NULL && CurrNode->father->balance!=2 && CurrNode->father->balance!=-2)
 {
  PreNode=CurrNode;
  CurrNode=CurrNode->father;
 }
 if(!CurrNode->father) return;

 if(CurrNode->father->left==CurrNode)
 {
  //自己是双亲的左节点
  if(CurrNode->left==PreNode)
   //指针从左路回溯。
    RR_Rotate(root,CurrNode);
  else
   //指针从右路回溯
   LR_Rotate(root,CurrNode);
 }
 else
 {
  //自己是双亲的右节点
  if(CurrNode->right==PreNode)
   //指针从右路回溯
    LL_Rotate(root,CurrNode);
  else
   //指针从左路回溯
   RL_Rotate(root,CurrNode);
 }

 return;
}

int InsertIndex(AVL **root,INDEXDATA *elem)
{
 AVL *CurrNode=NULL;
 AVL *PreNode=NULL;
 AVL *NewNode=NULL;

 if(*root==NULL)                  //如果根节点不存在则创建
 {
  if((*root=(AVL *)malloc(sizeof(AVL)))==NULL)
   return 0;
  memset(*root,NULL,sizeof(AVL));
  elem->Count=1;               //此ASCII和的词条个数
  (*root)->data=*elem;
  return 1;
 }

 CurrNode=*root;
 while(CurrNode)
 {
  PreNode=CurrNode;
  if(elem->ASCII<CurrNode->data.ASCII)
   CurrNode=CurrNode->left;
  else if(elem->ASCII>CurrNode->data.ASCII)
   CurrNode=CurrNode->right;
  else
  {
   //已存在该索引
   CurrNode->data.Count++;                  //此类型的词条个数加一
   elem->Start=CurrNode->data.Start;
   elem->Count=CurrNode->data.Count;
   return 2;    //表示已存在该元素
  }
 }
 //索引中无此节点，添加新的节点。
 if((NewNode=(AVL *)malloc(sizeof(AVL)))==NULL)        //为新节点开辟空间
  return 0;
 memset(NewNode,NULL,sizeof(AVL));                     //初始化新节点中的数据
 if(GetFileSizeEx(hDataFile,&DataFileSize)!=TRUE)      //获取数据库文件总大小
  return 0;
 elem->Start=DataFileSize;                             //将新添加的词条追加到数据库文件尾部
 elem->Count=1;                                        //此类型的词条数目为一
 NewNode->data=*elem;                                  //为新节点赋值
 NewNode->father=PreNode;
 //插入新节点
 if(elem->ASCII<PreNode->data.ASCII)
  PreNode->left=NewNode;
 else
  PreNode->right=NewNode;
 updateBF(NewNode);          //更新AVL的平衡因子
 adjustAVL(root,NewNode);    //AVL自调节

 return 1;
}

int InsertIndexFromFile(AVL **root,INDEXDATA *elem)
{
 AVL *CurrNode=NULL;
 AVL *PreNode=NULL;
 AVL *NewNode=NULL;

 if(*root==NULL)  //如果根节点不存在则创建
 {
  if((*root=(AVL *)malloc(sizeof(AVL)))==NULL)
   return 0;
  memset(*root,NULL,sizeof(AVL));
  (*root)->data=*elem;
  return 1;
 }

 CurrNode=*root;
 while(CurrNode)
 {
  PreNode=CurrNode;
  if(elem->ASCII<CurrNode->data.ASCII)
   CurrNode=CurrNode->left;
  else if(elem->ASCII>CurrNode->data.ASCII)
   CurrNode=CurrNode->right;
  else
  {
   //已存在该索引
   return 2;    //表示已存在该元素
  }
 }
 //索引中无此节点，添加新的节点。
 if((NewNode=(AVL *)malloc(sizeof(AVL)))==NULL)       //为新节点开辟空间
  return 0;
 memset(NewNode,NULL,sizeof(AVL));                    //初始化新节点中的数据
 NewNode->data=*elem;                                 //为新节点赋值
 NewNode->father=PreNode;
 //插入新节点
 if(elem->ASCII<PreNode->data.ASCII)
  PreNode->left=NewNode;
 else
  PreNode->right=NewNode;
 updateBF(NewNode);          //更新AVL的平衡因子
 adjustAVL(root,NewNode);    //AVL自调节

 return 1;
}

int AlterIndexStartAddr(AVL *root,const LARGE_INTEGER *refer,int pattern)
{
 //中序遍历,第三个参数:0.有词条被添加.1.有词条被删除.
 if(root==NULL)
  return 0;
 AlterIndexStartAddr(root->left,refer,pattern);

 if(root->data.Start.QuadPart>refer->QuadPart)
 {
  if(pattern==0)
  {
   //有词条被添加,部分索引起始地址后移.
   root->data.Start.QuadPart+=sizeof(WORD_INFO);    //修改其他词条索引的起始地址
  }
  else
  {
   //有词条被删除,部分索引起始地址前移
   root->data.Start.QuadPart-=sizeof(WORD_INFO);
  }
  InsertIndexToFile(root->data,0);                 //将修改结果存入文件中
 }

 AlterIndexStartAddr(root->right,refer,pattern);
 return 1;
}

INDEXDATA *SearchAVL(AVL *root,int ASCII)
{
 INDEXDATA *result=NULL;

 if(!root) return NULL;
 if(ASCII==root->data.ASCII) return &root->data;
 if(ASCII<root->data.ASCII)
  if((result=SearchAVL(root->left,ASCII))) return result;
 if(ASCII>root->data.ASCII)
  if((result=SearchAVL(root->right,ASCII))) return result;

 return NULL;
}

int PushAVLToStack(Stack *S,AVL *root)
{
 //先序遍历入栈
 if(!root) return 0;

 Push(S,root);
 if(root->left)
  PushAVLToStack(S,root->left);
 if(root->right)
  PushAVLToStack(S,root->right);

 return 1;
}

int DestroyAVL(AVL *root)
{
 AVL *tmp=NULL;

 if(!InitStack(&S))             //初始化栈
 {
  print("初始化栈失败.",RED);
  return 0;
 }
 PushAVLToStack(&S,root);      //AVL所有节点指针入栈
 AVL_ROOT=NULL;                //AVL根指针置空
 while(!StackEmpty(&S))
 {
  Pop(&S,&tmp);             //指针变量出栈
  free(tmp);                //释放内存
 }
 return 1;
}

int NodeCount(AVL *root)
{
 //统计树中有多少个节点
 int n=0;
 if(root==NULL)
  return 0;
 n=NodeCount(root->left);
 n++;
 n+=NodeCount(root->right);
 return n;
}

int WordCount(AVL *root)
{
 //统计索引包含了多少个词条
 int n=0;
 if(root==NULL)
  return 0;
 n=WordCount(root->left);
 n+=root->data.Count;
 n+=WordCount(root->right);
 return n;
}

#endif          //_AVL_H_

 

 


/*------------------------------------FileOper.h----------------------------------------------*/


#ifndef _FILEOPER_H_
#define _FILEOPER_H_

#include <stdio.h>
#include <stdlib.h>
#include "unicode.h"
#include "global.h"
#include "GUI.h"

int CreateDataFile()
{
 hDataFile=CreateFile(CharToTCHAR(DataFilePath),GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,CREATE_ALWAYS,\
  FILE_ATTRIBUTE_NORMAL,NULL);
 if(hDataFile==INVALID_HANDLE_VALUE)
 {
  print("创建数据库文件失败。",RED);
  return 0;
 }
 return 1;
}

int CreateIndexFile()
{
 hIndexFile=CreateFile(CharToTCHAR(IndexFilePath),GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,CREATE_ALWAYS,\
  FILE_ATTRIBUTE_NORMAL,NULL);
 if(hIndexFile==INVALID_HANDLE_VALUE)
 {
  print("创建索引文件失败。",RED);
  return 0;
 }
 return 1;
}

int OpenDataFile()
{
 hDataFile=CreateFile(CharToTCHAR(DataFilePath),GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,OPEN_ALWAYS,\
  FILE_ATTRIBUTE_NORMAL,NULL);
 if(hIndexFile==INVALID_HANDLE_VALUE)
 {
  printf("数据库文件打开失败。",RED);
  return 0;
 }
 return 1;
}

int OpenIndexFile()
{
 hIndexFile=CreateFile(CharToTCHAR(IndexFilePath),GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,OPEN_ALWAYS,\
  FILE_ATTRIBUTE_NORMAL,NULL);
 if(hIndexFile==INVALID_HANDLE_VALUE)
 {
  print("索引文件打开失败。",RED);
  return 0;
 }
 return 1;
}

int InsertDataToFile(WORD_INFO word,INDEXDATA index)
{
 DWORD tmp_dw;
 WORD_INFO temp;
 LARGE_INTEGER MovSize;

 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));

 MovSize.QuadPart=index.Start.QuadPart+sizeof(WORD_INFO)*(index.Count-1);     //即将写入新词条的地址

 GetFileSizeEx(hDataFile,&DataFileSize);                                      //获取当前数据库文件的大小
 if(DataFileSize.QuadPart!=MovSize.QuadPart)
 {
  //要插入的词条不在数据库文件的尾部
  do
  {
   DataFileSize.QuadPart-=sizeof(WORD_INFO);                         //将文件内部位置指针移至最后一个词条的开始处
   DataFileSize.LowPart=SetFilePointer(hDataFile,DataFileSize.LowPart,&DataFileSize.HighPart,FILE_BEGIN);
   ReadFile(hDataFile,&temp,sizeof(WORD_INFO),&tmp_dw,NULL);         //读出此词条
   WriteFile(hDataFile,&temp,sizeof(WORD_INFO),&tmp_dw,NULL);
  }while(DataFileSize.QuadPart!=MovSize.QuadPart);
 }

 MovSize.LowPart=SetFilePointer(hDataFile,MovSize.LowPart,&MovSize.HighPart,FILE_BEGIN);      //文件内部位置指针移至将要追加的位置
 WriteFile(hDataFile,&word,sizeof(WORD_INFO),&tmp_dw,NULL);

 return 1;
}

int InsertIndexToFile(INDEXDATA IndexNode,int choose)
{
 //第二个参数1表示在文件末尾添加新索引,0表示修改某一索引值.
 int n=0;
 DWORD tmp_dw;
 LARGE_INTEGER MovSize;
 INDEXDATA ReadBuff;

 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));
 memset(&ReadBuff,NULL,sizeof(INDEXDATA));

 if(choose==0)
 {
  //表明此时是要修改索引文件中某索引
  SetFilePointer(hIndexFile,MovSize.LowPart,&MovSize.HighPart,FILE_BEGIN);           //文件内部位置指针指向起始位置
  while(1)
  {
   if(!ReadFile(hIndexFile,&ReadBuff,sizeof(INDEXDATA),&tmp_dw,NULL))
    return 0;
   if(tmp_dw<1) break;
   if(ReadBuff.ASCII==IndexNode.ASCII)
   {
    memset(&MovSize,NULL,sizeof(LARGE_INTEGER));                  //初始化位移变量
    MovSize.QuadPart=n*sizeof(INDEXDATA);                         //向后移动一个索引节点的长度
    SetFilePointerEx(hIndexFile,MovSize,NULL,FILE_BEGIN);         //第三个参数返回移动后的位置
    break;
   }
   n++;
   memset(&ReadBuff,NULL,sizeof(INDEXDATA));
  }
 }
 else
 {
  //将新的索引数据追加到索引文件的尾部
  MovSize.LowPart=SetFilePointer(hIndexFile,MovSize.LowPart,&MovSize.HighPart,FILE_END);             //将文件内部指针移至文件末尾
 }
 if(!WriteFile(hIndexFile,(LPCVOID)&IndexNode,sizeof(INDEXDATA),&tmp_dw,NULL))         //将新的索引节点写入文件
  return 0;

 return 1;
}

#endif     //_FILEOPER_H_

/*------------------------------------FileOper.h----------------------------------------------*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include "global.h"
#include "FileOper.h"
#include "AVL.h"
#include "queue.h"
#include "GUI.h"

int ASCII_SUM(char *str);
int AdjustIndex(INDEXDATA _index);
int Query_Word(char *word,WORD_INFO *WI,LARGE_INTEGER *PCurrSize);
int Query();
int Add_Word();
int Alter_Word(LARGE_INTEGER CurrSize,WORD_INFO *WI);
int Delete_Word(LARGE_INTEGER CurrSize);
int Delete_Index(int ascii);
int OptimizeIndexFile();
void ShowFile();

int ASCII_SUM(char *str)
{
 int sum=0;
 char *p=str;

 for(sum=0;*p!=NULL;p++)
  sum+=(int)*p;           //计算单词的ASCII和
 return sum;
}

int AdjustIndex(INDEXDATA _index)
{
 DWORD tmp_dw;
 LARGE_INTEGER ReferSize;

 memset(&ReferSize,NULL,sizeof(LARGE_INTEGER));

 InsertIndexToFile(_index,0);                 //先修改新词条的索引
 ReferSize=_index.Start;
 AlterIndexStartAddr(AVL_ROOT,&ReferSize,0);

 return 1;
}

int Query_Word(char *word,WORD_INFO *WI,LARGE_INTEGER *PCurrSize)
{
 //返回值:1.查询成功。0.此词条未被收录。-1.查询出错。
 int word_ascii,n;
 DWORD tmp_dw;
 INDEXDATA *pIndex=NULL;
 WORD_INFO ReadBuff;
 LARGE_INTEGER MovSize,CurrSize;

 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));
 memset(&CurrSize,NULL,sizeof(LARGE_INTEGER));

 word_ascii=ASCII_SUM(word);                //先计算出要查找词语的ASCII码之和
 if((pIndex=SearchAVL(AVL_ROOT,word_ascii))==NULL)
  return 0;                              //此词语未被收录
 MovSize=pIndex->Start;
 MovSize.LowPart=SetFilePointer(hDataFile,MovSize.LowPart,&MovSize.HighPart,FILE_BEGIN);    //文件内部指针移至此类词条开始的位置
 for(n=pIndex->Count;n!=0;n--)
 {
  memset(&ReadBuff,NULL,sizeof(WORD_INFO));
  if(!ReadFile(hDataFile,&ReadBuff,sizeof(WORD_INFO),&tmp_dw,NULL))
   return -1;
  if(!strcmp(ReadBuff.word,word))
  {
   //查询到此单词
   if(WI!=NULL)
    memcpy(WI,&ReadBuff,sizeof(WORD_INFO));
   if(PCurrSize!=NULL)
   {
    //获取当前文件内部指针位置
    CurrSize.LowPart=SetFilePointer(hDataFile,CurrSize.LowPart,&CurrSize.HighPart,FILE_CURRENT);
    CurrSize.QuadPart-=sizeof(WORD_INFO);
    memcpy(PCurrSize,&CurrSize,sizeof(LARGE_INTEGER));
   }
   return 1;
  }
 }

 return 0;
}

int Query()
{
 LARGE_INTEGER CurrSize;
 WORD_INFO WI;
 int choose;
 char ch_temp[50],word[50],result[100];
 TCHAR TC_temp[50];

 memset(&WI,NULL,sizeof(WORD_INFO));
 memset(word,NULL,sizeof(word));
 memset(result,NULL,sizeof(result));
 memset(ch_temp,NULL,sizeof(ch_temp));

 do
 {
  InputBox(TC_temp,50,_T("请输入词名"),_T("查找词条"),NULL,300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memcpy(word,ch_temp,50);

 switch(Query_Word(word,&WI,&CurrSize))
 {
 case 1:
  sprintf(result,"词名:%s",WI.word);
  print(result,BLACK);
  memset(result,NULL,sizeof(result));
  sprintf(result,"读音:%s",WI.pronunciation);
  print(result,BLACK);
  memset(result,NULL,sizeof(result));
  sprintf(result,"词性:%s",WI.property);
  print(result,BLACK);
  memset(result,NULL,sizeof(result));
  sprintf(result,"释义:%s",WI.describe);
  print(result,BLACK);

  printf("1.修改\t2.删除\t0.返回\n");

  cover(40,250,150,50);
  cover(40,370,150,50);
  cover(30,500,190,50);

  settextcolor(GREEN);
  setbkmode(TRANSPARENT);
  settextstyle(15,15,NULL);
  outtextxy(80,270,_T("修改"));
  outtextxy(80,395,_T("删除"));
  outtextxy(80,525,_T("返回"));
  while(!(choose=GetMouse()));
  if(choose==1)
  {
   if(!Alter_Word(CurrSize,&WI))
   {
    print("词条修改失败.",RED);
   }
   text2_y=222;                  //控制台消息输出坐标初始化
   cover(251,222,473,378);
   sprintf(result,"词名:%s",WI.word);
   print(result,BLACK);
   memset(result,NULL,sizeof(result));
   sprintf(result,"读音:%s",WI.pronunciation);
   print(result,BLACK);
   memset(result,NULL,sizeof(result));
   sprintf(result,"词性:%s",WI.property);
   print(result,BLACK);
   memset(result,NULL,sizeof(result));
   sprintf(result,"释义:%s",WI.describe);
   print(result,BLACK);
   print("词条修改成功.",GREEN);
  }
  else if(choose==2)
  {
   text2_y=222;                  //控制台消息输出坐标初始化
   cover(251,222,473,378);
   if(Delete_Word(CurrSize)!=1)
   {
    print("删除词条失败.",RED);
   }
   else
   {
    memset(result,NULL,sizeof(result));
    sprintf(result,"已成功删除词条:%s",WI.word);
    print(result,GREEN);
   }
  }
  break;
 case 0:
  print("不存在此单词.",YELLOW);
  return 0;
 default:
  print("查询出错.",RED);
  return -1;
 }

 return 1;
}

int Add_Word()
{
 int InsertIndexResult=0;
 INDEXDATA IndexData;            //AVL索引节点数据内容
 WORD_INFO word;                 //包含每个单词信息
 TCHAR TC_temp[100];
 char ch_temp[100];

 memset(&IndexData,NULL,sizeof(INDEXDATA));
 memset(&word,NULL,sizeof(WORD_INFO));
 memset(TC_temp,NULL,sizeof(TC_temp));
 memset(ch_temp,NULL,sizeof(ch_temp));

 do
 {
  InputBox(TC_temp,50,_T("请输入词名"),_T("添加词条"),NULL,300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memcpy(word.word,ch_temp,50);

 IndexData.ASCII=ASCII_SUM(word.word);                    //计算单词ASCII和
 //printf("此单词的ASCII之和为:%d\n",IndexData.ASCII);
 if(Query_Word(word.word,NULL,NULL)==1)
 {
  print("已收录此词条,请勿重复添加.",RED);
  return 2;
 }

 do
 {
  InputBox(TC_temp,50,_T("请输入拼音"),_T("添加词条"),NULL,300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memcpy(word.pronunciation,ch_temp,50);

 do
 {
  InputBox(TC_temp,20,_T("请输入词性"),_T("添加词条"),NULL,300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memcpy(word.property,ch_temp,20);

 do
 {
  InputBox(TC_temp,100,_T("请输入释义"),_T("添加词条"),NULL,300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memcpy(word.describe,ch_temp,100);

 if(!(InsertIndexResult=InsertIndex(&AVL_ROOT,&IndexData)))    //插入或修改索引节点
 {
  //第二个参数返回了新词条对应的索引数据
  printf("添加索引失败。",RED);
  return 0;
 }
 if(!InsertDataToFile(word,IndexData)) 
 {
  //将新的词条添加至数据库文件中,第二个参数是新词条所对应的索引.
  printf("写文件失败。",RED);
  return 0;
 }
 //当InsertIndexResult返回值为1时表明新添加的词条追加在数据库文件末尾，不需要对全部索引进行更新，否则需要。
 if(InsertIndexResult==1)
 {
  if(!InsertIndexToFile(IndexData,1))         //第二个参数1表示新添加的索引节点只需要追加在索引文件的末尾
  {
   printf("写入索引文件失败。",RED);
   return 0;
  }
 }
 else
 {
  //在索引中只是修改了节点数据,没有添加新索引.
  switch(AdjustIndex(IndexData))
  {
  case 0:
   {
    printf("调整索引失败。",RED);
    return 0;
   }
  case -1:
   {
    printf("文件异常,请重新建立!",RED);
    return 0;
   }
  default:
   break;
  }
 }
 return 1;
}

int Alter_Word(LARGE_INTEGER CurrSize,WORD_INFO *WI)
{
 DWORD tmp_dw;
 TCHAR TC_temp[100];
 char ch_temp[100];

 memset(TC_temp,NULL,sizeof(TC_temp));
 memset(ch_temp,NULL,sizeof(ch_temp));

 do
 {
  InputBox(TC_temp,50,_T("修改读音"),_T("修改词条"),CharToTCHAR(WI->pronunciation),300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memset(WI->pronunciation,NULL,50);
 memcpy(WI->pronunciation,ch_temp,50);

 do
 {
  InputBox(TC_temp,20,_T("修改词性"),_T("修改词条"),CharToTCHAR(WI->property),300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memset(WI->property,NULL,20);
 memcpy(WI->property,ch_temp,20);

 do
 {
  InputBox(TC_temp,100,_T("修改释义"),_T("修改词条"),CharToTCHAR(WI->describe),300,200);
  memcpy(ch_temp,TCHARToChar(TC_temp),sizeof(ch_temp));               //将TCHAR类型字符集转换为char类型
 }while(strlen(ch_temp)<1);
 memset(WI->describe,NULL,100);
 memcpy(WI->describe,ch_temp,100);

 SetFilePointer(hDataFile,CurrSize.LowPart,&CurrSize.HighPart,FILE_BEGIN);
 if(!WriteFile(hDataFile,WI,sizeof(WORD_INFO),&tmp_dw,NULL))
  return 0;
 return 1;
}

int Delete_Word(const LARGE_INTEGER CurrSize)
{
 //返回值:1.删除成功.0.删除失败.-1.程序异常
 int word_ascii;
 DWORD tmp_dw;
 WORD_INFO WordReadBuff;
 INDEXDATA IndexReadBuff;
 INDEXDATA *PIndex=NULL;
 LARGE_INTEGER refer,WriteAddr,ReadAddr;
 LARGE_INTEGER MovSize=CurrSize;

 memset(&WordReadBuff,NULL,sizeof(WORD_INFO));
 memset(&IndexReadBuff,NULL,sizeof(INDEXDATA));
 memset(&refer,NULL,sizeof(LARGE_INTEGER));
 memset(&WriteAddr,NULL,sizeof(LARGE_INTEGER));
 memset(&ReadAddr,NULL,sizeof(LARGE_INTEGER));

 SetFilePointer(hDataFile,MovSize.LowPart,&MovSize.HighPart,FILE_BEGIN);
 if(!ReadFile(hDataFile,&WordReadBuff,sizeof(WORD_INFO),&tmp_dw,NULL))
 {
  print("读取数据库文件出错.",RED);
  return 0;
 }
 word_ascii=ASCII_SUM(WordReadBuff.word);
 PIndex=SearchAVL(AVL_ROOT,word_ascii);
 if(PIndex==NULL)
 {
  print("未找到此词条索引.",RED);
  return -1;
 }
 refer=PIndex->Start;                 //保存当前词条起始地址
 if(PIndex->Count>1)
 {
  PIndex->Count--;                 //此词条类型的索引还存在,只是词条数目减一
  InsertIndexToFile(*PIndex,0);    //修改文件内储存的相应索引
 }
 else
 {
  //此类型的词条被删完,索引随之要被删除.
  Delete_Index(word_ascii);
  //删除文件内相应索引后要销毁现有索引,初始化新索引.
  DestroyAVL(AVL_ROOT);
  InitIndex();
 }
 if(!AlterIndexStartAddr(AVL_ROOT,&refer,1) && GetLastError()!=0)
 {
  print("更新索引失败.",RED);
  return 0;
 }

 //删除数据库文件中的词条信息
 memset(&DataFileSize,NULL,sizeof(LARGE_INTEGER));
 GetFileSizeEx(hDataFile,&DataFileSize);                  //获取数据库文件大小
 WriteAddr=CurrSize;
 ReadAddr.QuadPart=WriteAddr.QuadPart+sizeof(WORD_INFO);
 if(ReadAddr.QuadPart==DataFileSize.QuadPart)
 {
  SetFilePointer(hDataFile,WriteAddr.LowPart,&WriteAddr.HighPart,FILE_BEGIN);
  SetEndOfFile(hDataFile);
  return 1;
 }
 while(1)
 {
  SetFilePointer(hDataFile,ReadAddr.LowPart,&ReadAddr.HighPart,FILE_BEGIN);
  if(!ReadFile(hDataFile,&WordReadBuff,sizeof(WORD_INFO),&tmp_dw,NULL))
   return 0;
  if(tmp_dw<1) break;
  SetFilePointer(hDataFile,WriteAddr.LowPart,&WriteAddr.HighPart,FILE_BEGIN);
  if(!WriteFile(hDataFile,&WordReadBuff,sizeof(WORD_INFO),&tmp_dw,NULL))
   return 0;
  WriteAddr.QuadPart+=sizeof(WORD_INFO);
  ReadAddr.QuadPart+=sizeof(WORD_INFO);
  if(ReadAddr.QuadPart==DataFileSize.QuadPart)
  {
   SetFilePointer(hDataFile,WriteAddr.LowPart,&WriteAddr.HighPart,FILE_BEGIN);
   SetEndOfFile(hDataFile);
   return 1;
  }
 }

 return -1;
}

int Delete_Index(int ascii)
{
 DWORD tmp_dw;
 INDEXDATA ReadBuff;
 LARGE_INTEGER ReadAddr,CurrSize,WriteAddr;

 memset(&ReadBuff,NULL,sizeof(INDEXDATA));
 memset(&ReadAddr,NULL,sizeof(LARGE_INTEGER));
 memset(&CurrSize,NULL,sizeof(LARGE_INTEGER));
 memset(&WriteAddr,NULL,sizeof(LARGE_INTEGER));
 memset(&DataFileSize,NULL,sizeof(LARGE_INTEGER));

 GetFileSizeEx(hIndexFile,&DataFileSize);                                      //获取索引文件大小
 SetFilePointer(hIndexFile,CurrSize.LowPart,&CurrSize.HighPart,FILE_BEGIN);    //文件内部指针至于起始位置
 while(1)
 {
  if(!ReadFile(hIndexFile,&ReadBuff,sizeof(INDEXDATA),&tmp_dw,NULL))
  {
   print("读取索引文件出错.",RED);
   return 0;
  }
  if(tmp_dw<1) break;
  if(ReadBuff.ASCII==ascii)
  {
   memset(&CurrSize,NULL,sizeof(LARGE_INTEGER));
   CurrSize.LowPart=SetFilePointer(hIndexFile,CurrSize.LowPart,&CurrSize.HighPart,FILE_CURRENT);   //获取当前文件指针
   ReadAddr=CurrSize;
   memset(&WriteAddr,NULL,sizeof(LARGE_INTEGER));
   WriteAddr.QuadPart=ReadAddr.QuadPart-sizeof(INDEXDATA);            //向后退一个索引的长度
   if(ReadAddr.QuadPart==DataFileSize.QuadPart)
   {
    SetFilePointer(hIndexFile,WriteAddr.LowPart,&WriteAddr.HighPart,FILE_BEGIN);
    SetEndOfFile(hIndexFile);
    return 1;
   }
   while(1)
   {
    memset(&ReadBuff,NULL,sizeof(INDEXDATA));
    if(!ReadFile(hIndexFile,&ReadBuff,sizeof(INDEXDATA),&tmp_dw,NULL))
     return 0;
    if(tmp_dw<1) break;
    SetFilePointer(hIndexFile,WriteAddr.LowPart,&WriteAddr.HighPart,FILE_BEGIN);     //定位到开始写入的位置
    if(!WriteFile(hIndexFile,&ReadBuff,sizeof(INDEXDATA),&tmp_dw,NULL))
     return 0;
    ReadAddr.QuadPart+=sizeof(INDEXDATA);
    WriteAddr.QuadPart+=sizeof(INDEXDATA);
    if(ReadAddr.QuadPart==DataFileSize.QuadPart)
    {
     SetFilePointer(hIndexFile,WriteAddr.LowPart,&WriteAddr.HighPart,FILE_BEGIN);
     SetEndOfFile(hIndexFile);                     //设置文件末地址
     return 1;
    }
    SetFilePointer(hIndexFile,ReadAddr.LowPart,&ReadAddr.HighPart,FILE_BEGIN);         //定位到开始读取的位置
   }
  }
 }

 return -1;
}

int OptimizeIndexFile()
{
 Queue Q;
 DWORD tmp_dw;
 QUEUE_DATATYPE elem;
 LARGE_INTEGER MovSize;

 memset(&Q,NULL,sizeof(Queue));
 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));

 SetFilePointer(hIndexFile,MovSize.LowPart,&MovSize.HighPart,FILE_BEGIN);                 //定位到起始位置
 SetEndOfFile(hIndexFile);            //清空索引文件中所有内容

 //广度优先遍历
 if(!EnQueue(&Q,AVL_ROOT))           //AVL树根入队
  return 0;
 while(Q.queuesize!=0)
 {
  DeQueue(&Q,&elem);
  if(elem->left)
   if(!EnQueue(&Q,elem->left))
    return 0;
  if(elem->right)
   if(!EnQueue(&Q,elem->right))
    return 0;
  if(!WriteFile(hIndexFile,&elem->data,sizeof(INDEXDATA),&tmp_dw,NULL))
   return 0;
 }

 return 1;
}

void ShowFile()
{
 FILE *file=NULL;
 LARGE_INTEGER MovSize;
 INDEXDATA IndexReadBuff;
 DWORD tmp_dw;

 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));
 memset(&IndexReadBuff,NULL,sizeof(INDEXDATA));

 if((file=fopen("IndexForm.txt","wt+"))==NULL)
 {
  print("创建临时文件失败.",RED);
  return;
 }

 fprintf(file,"索引文件结构:\n\n");
 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));
 SetFilePointer(hIndexFile,MovSize.LowPart,&MovSize.HighPart,FILE_BEGIN);
 while(1)
 {
  if(!ReadFile(hIndexFile,&IndexReadBuff,sizeof(INDEXDATA),&tmp_dw,NULL))
   break;
  if(tmp_dw<1) break;
  fprintf(file,"ASCII：%d\t\t",IndexReadBuff.ASCII);
  fprintf(file,"StartAddr:%d\t\t",IndexReadBuff.Start.QuadPart);
  fprintf(file,"WordCount:%d\n",IndexReadBuff.Count);
 }
 fclose(file);
 ShellExecute(NULL,_T("open"),_T("IndexForm.txt"),NULL,NULL,SW_SHOWNORMAL);
 return;
}

/*------------------------------------init.h----------------------------------------------*/

#include <stdio.h>
#include <windows.h>
#include <conio.h>
#include <io.h>
#include "FileOper.h"
#include "global.h"
#include "AVL.h"
#include "GUI.h"

int InitFile()
{
 //检查文件的完整性,创建或打开文件.
 char choose;

 if(access(DataFilePath,0) || access(IndexFilePath,0))
 {
  //检测数据库文件或索引文件是否存在
  print("文件丢失,是否重建?(Y/N)",RED);
  while(1)
  {
   fflush(stdin);
   choose=_getch();
   if(choose=='Y' || choose=='y')
    break;
   else if(choose=='N' || choose=='n')
    exit(0);
  }
  if(!CreateDataFile()) return 0;
  if(!CreateIndexFile()) return 0;
  print("文件创建成功.",GREEN);
  return 1;
 }
 if(!OpenDataFile()) return 0;
 if(!OpenIndexFile()) return 0;
 return 1;
}

int InitIndex()
{
 DWORD tmp_dw;
 INDEXDATA ReadBuff;
 LARGE_INTEGER MovSize,CurrSize;

 AVL_ROOT=NULL;                     //AVL索引根节点指针置空
 memset(&ReadBuff,NULL,sizeof(INDEXDATA));
 memset(&MovSize,NULL,sizeof(LARGE_INTEGER));
 memset(&CurrSize,NULL,sizeof(LARGE_INTEGER));

 SetFilePointerEx(hIndexFile,MovSize,&CurrSize,FILE_BEGIN);        //将文件指针至于文件起始位置
 while(1)
 {
  if(!ReadFile(hIndexFile,(LPVOID)&ReadBuff,(DWORD)sizeof(INDEXDATA),&tmp_dw,NULL))
   return 0;
  if(tmp_dw<1) break;
  InsertIndexFromFile(&AVL_ROOT,&ReadBuff);          //将从文件内读出的索引插入到内存中
  memset(&ReadBuff,NULL,sizeof(INDEXDATA));
 }

 return 1;
}

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