this.cpp

简单的Dos界面的文本编辑器

#define MAXCOMSTR 4
#define I 1
#define IB 2
#define A 3
#define L 4
#define LN 5
#define D 6
#define F 7
#define C 8
#define R 9
#define P 10
#define S 11
#define E 12
#define Q 13
#define H 14
#define W 15
#define CURRENT 17

#define _max_input 512

int _file_exist=0;    //file is not exist
int _file_modified=0;  //file is modified

///////////////////////////////////////////////////////////////////////////////////////////

#include "fileswap.h"

///////////////////////////////////////////////////////////////////////////////////////////

int carryout(char *tempchar); //get the command and carry out
int normalspace(char *tempchar); //permit users to input extra space
void stringtolower(char *tempchar);//permit users to comfound the upper and lower

///////////////////////////////////////////////////////////////////////////////////////////
/////////////////initial face//////////////////////////////////////////////////////////////
void IniFace(void)
{
	system("cls");
	printf("\n\n\n");
	printf(" %c",12);
	for(int i=1;i<=76;i++)
		printf("%c",4);
	printf("%c\n",12);
	printf(" %c",12);
	printf("                                                                            ");
	printf("%c\n",12);
	printf(" %c",12);
	printf("                        WELCOME USING EDLINE 1.0                            ");
	printf("%c\n",12);
	printf(" %c",12);
	printf("                                                                            ");
	printf("%c\n",12);
	printf(" %c",12);
	printf("                                 ------------- CopyRight: 99708 work group  ");
	printf("%c\n",12);
	printf(" %c",12);
	printf("  Partner: BaiYan,SunMeng,SunKewei,ZhangHui                                 ");
	printf("%c\n",12);
    printf(" %c",12);
	for(i=1;i<=76;i++)
		printf("%c",4);
	printf("%c\n",12);
	getch();
	system("cls");
}
void stringtolower(char *tempchar)
{
	int length=0,i=0;
	length=strlen(tempchar);
	for(i=0;i<length;i++)
	{
		tempchar[i]=tolower(tempchar[i]);
  }
}
///
int normalspace(char *tempchar)
{	
	char *charposi="";
	if(strlen(tempchar)==0)
	{
		return 0;
	}
	charposi=tempchar;
	if( *charposi==' ')
	{
		while(*charposi==' ')
		{
			charposi++;
		}
		if((*charposi=='c' || *charposi=='C') && *(charposi+1)==' ')
		{
			strcpy(tempchar,charposi);
			return 2;
		}
		strcpy(tempchar,charposi);
		normalspace(tempchar);
	}
	if(*charposi!=' ')
	{
		if((*charposi=='c' || *charposi=='C') && *(charposi+1)==' ')
		{
			strcpy(tempchar,charposi);
			return 2;
		}
		while(strlen(charposi)!=0)
		{
			if(*charposi==' '&& (*(charposi+1)==' '||strlen(charposi+1)==0))
			{
				strcpy(charposi,charposi+1);
			}
			else
			{
				charposi++;
			}
		}
	}
	return 1;
}

//////////////////////////////////////////////////////////////////////////////////////////////
int carryout(char *tempchar,FileSwap &fi)
{
	int stringcount=0, posi=0,charnum=0,countnum=1;
	int commandnumber=0,commandname=0;
	char *charpointer[MAXCOMSTR+1];
	char cmdline[MAXCOMSTR][50];
	for(int i=0; i<MAXCOMSTR; i++)
	{
		charpointer[i]=cmdline[i];
	}
	if(	normalspace(tempchar) == 2)
	{
		strcpy(charpointer[0],"c");
		int length=strlen(tempchar);
		if(length<5)
		{
			printf("--------command is error---------\n");
			return -1;
		}
		for(int i=length-1; i>1; i--)
		{
			if(*(tempchar+i)!=' ' )
			{
				*(tempchar+i+1)=NULL;
				break;
			}
		}
		if( *(tempchar+i)<='9' && *(tempchar+i)>='0')
		{
			for( ; i>1; i--)
			{
				if(*(tempchar+i-1)==' ')
				{
					strcpy(charpointer[3],tempchar+i);
					*(tempchar+i-1)=NULL;
					break;
				}
			}
			for(i-=2; i>1; i--)
			{
				if(*(tempchar+i)!=' ' )
					break;
			}
			if( *(tempchar+i)<='9' && *(tempchar+i)>='0')
			{
				for( ; i>1; i--)
				{
					if(*(tempchar+i-1)==' ')
					{
						strcpy(charpointer[2],tempchar+i);
						*(tempchar+i-1)=NULL;
						if(*(tempchar+1)==' ' )
						{
							strcpy(charpointer[1],tempchar+2);
							stringcount=3;
							break;
						}
						else
						{
							printf("--------command is error---------\n");
							return -1;
						}
					}
				}
			}
			else
			{
				printf("--------command is error---------\n");
				return -1;
				//strcpy(charpointer[2],charpointer[3]);
				//strcpy(charpointer[3],"1");
			}

		}
		else
		{
			if(*(tempchar+1)==' ' )
				strcpy(charpointer[1],tempchar+1);
			else
			{
				printf("--------command is error---------\n");
				return -1;
			}
		}

	}
	else
	{
		stringtolower(tempchar);
		for(posi=0;posi<MAXCOMSTR;posi++)
		{
			strcpy(charpointer[posi],"\x0");
		}
		charnum=strlen(tempchar);
		charpointer[0]=tempchar;
		for(charnum=0;tempchar[charnum]!=NULL;charnum++)
		{
			if(tempchar[charnum]==' ')
			{
				stringcount+=1;
				tempchar[charnum]='\x0';
				charpointer[countnum]=tempchar+charnum+1;
				countnum++;
			}
		}
	}
	charpointer[4]="";
	if(stringcount>=MAXCOMSTR){return -1;}
	if(stringcount==0&&strlen(tempchar)==0){return 0;}
	if(stringcount<MAXCOMSTR&&stringcount>=0&&strlen(tempchar)!=0)
	{
		if(strcmp(charpointer[0],"i")==0){commandname=I;}
		if(strcmp(charpointer[0],"ib")==0){commandname=IB;}
		if(strcmp(charpointer[0],"a")==0){commandname=A;}
		if(strcmp(charpointer[0],"l")==0){commandname=L;}
		if(strcmp(charpointer[0],"ln")==0){commandname=LN;}
		if(strcmp(charpointer[0],"d")==0){commandname=D;}
		if(strcmp(charpointer[0],"f")==0){commandname=F;}
		if(strcmp(charpointer[0],"c")==0){commandname=C;}
		if(strcmp(charpointer[0],"r")==0){commandname=R;}
		if(strcmp(charpointer[0],"p")==0){commandname=P;}
		if(strcmp(charpointer[0],"s")==0){commandname=S;}
		if(strcmp(charpointer[0],"e")==0){commandname=E;}
		if(strcmp(charpointer[0],"q")==0){commandname=Q;}
		if(strcmp(charpointer[0],"h")==0){commandname=H;}
		if(strcmp(charpointer[0],"w")==0){commandname=W;}
		if(strcmp(charpointer[0],"#")==0){commandname=CURRENT;}
		if(commandname==0){return -1;}
		commandnumber=stringcount+1+commandname*100;
	}
	switch(commandnumber)
	{
	case 101://i
		{
			char *input1=new char[_max_input];
			char *input2=new char[_max_input];
			long old_current=0,new_current=0;
			if(fi.current==0)
			{
				old_current=1;
			}
			else
			{
				old_current=fi.current;
			}
			printf("  ");
			gets(input1);
			while(1)
			{				
				if(strlen(input1)==0)
				{
					printf("  ");
					gets(input2);
					if(strlen(input2)==0)
					{
						if(getch()==13)
						{
							new_current=fi.current;
							fi.Print(old_current,1);						
							delete input1;
							delete input2;
							fi.current=new_current;
							_file_modified=1;						
							return 101;
						}
						else
						{
							fi.Insert(input1,fi.current);
							if(strlen(input1)==0)
							{
								strcpy(input1,input2);
							}
							else
							{
								printf("  ");
								gets(input1);
							}
						}
					}
					else
					{
						fi.Insert(input1,fi.current);
						if(strlen(input1)==0)
						{
							strcpy(input1,input2);
						}
						else
						{
							printf("  ");
							gets(input1);
						}
					}
				}
				else
				{
					fi.Insert(input1,fi.current);
					if(strlen(input1)==0)
					{
						strcpy(input1,input2);
					}
					else
					{
						printf("  ");
						gets(input1);
					}
				}				
			}  //insert successfully
		}
	case 102://i #
		{
			char *input1=new char[_max_input];
			char *input2=new char[_max_input];
			long lnum=0;
			lnum=atol(charpointer[1]);
			if(lnum<=0||lnum>fi.SumLNow()){return -1;}
			long old_current=lnum,new_current=lnum;
			if(lnum==0)
			{
				old_current=1;
			}
			else
			{
				old_current=lnum;
			}
			printf("  ");
			gets(input1);
			while(1)
			{
				if(strlen(input1)==0)
				{
					printf("  ");
					gets(input2);
					if(strlen(input2)==0)
					{
						if(getch()==13)
						{
							new_current=fi.current;
							fi.Print(old_current,1);						
							delete input1;
							delete input2;
							fi.current=new_current;
							_file_modified=1;						
							return 102;
						}
						else
						{
							fi.Insert(input1,fi.current);
							if(strlen(input1)==0)
							{
								strcpy(input1,input2);
							}
							else
							{
								printf("  ");
								gets(input1);
							}
						}
					}
					else
					{
						fi.Insert(input1,lnum++);
						if(strlen(input1)==0)
						{
							strcpy(input1,input2);
						}
						else
						{
							printf("  ");
							gets(input1);
						}
					}
				}
				else
				{
					fi.Insert(input1,lnum++);
					if(strlen(input1)==0)
					{
						strcpy(input1,input2);
					}
					else
					{
						printf("  ");
						gets(input1);
					}
				}				
			}//lines inserted successfully
		}
	case 201: //ib
		{
			char *input1=new char[_max_input];
			char *input2=new char[_max_input];
			if(fi.current==0 || fi.current>fi.SumLNow())
			{
				printf("-----------file is empty--------------\n");
				return -1;
			}
			long old_current=fi.current,new_current=0;
			printf("  ");
			gets(input1);
			while(1)
			{
				if(strlen(input1)==0)
				{
					printf("  ");
					gets(input2);
					if(strlen(input2)==0)
					{
						if(getch()==13)
						{
							new_current=fi.current;
							fi.Print(old_current,1);						
							delete input1;
							delete input2;