汇编写的基于DOS窗口的记事本

好久没更blog了，微机原理要一个汇编大作业。经过两天的预习。写了一个记事本。其中有很多漏洞，不过勉强能用。

环境：Masm for Windows 2012.5【64位】

实现功能：
1、创建文件
2、编辑文件
3、读文件
4、删除文件

主要思想：
太简单了，没有什么思想orz。

Talk is cheap , show me your code.【代码不是一般的丑，改改应该可以改成2、300行的代码，但是还有好几门要预习的课，就不修改了【扑哧】】

DATAS SEGMENT     STR1 DB '成功创建文件$'     SYMBOL DB 20H, 08H,0AH,24H     BUFFER DB 300 DUP(?)     FILENAME DB 300 DUP(?)     CREATE DB 'create$'     DELETE DB 'delete$'     READ DB 'read$'     EDIT DB 'edit$'     SUCCESS DB 'success$'     FAIL DB 'fail$'     STEP DB 'STEP1$'     NOSTEP DB 'NOSTEP$'     FILESUCCESSMESSAGE DB 'create file successfully!$'     FILEFAILMESSAGE DB 'create file failly!$'     ERRORFAILMESSAGE DB 'cant find this command!$'     READSUCCESSMESSAGE DB 'read file successfully$'     READFAILMESSAGE DB 'read file failly$'     DELETESUCCESSMESSAGE DB 'delete file successfully$'     FLAG DB ?     COMMAND DB ?     HANDLE DW ?     COUNT DW ?     TOKENFLAG DW ?DATAS ENDSSTACKS SEGMENT    DB 100 DUP(?)STACKS ENDS ESGE SEGMENT ESGE ENDSCODES SEGMENT    ASSUME CS:CODES,DS:DATAS,SS:STACKS, ES:ESGESTART:    MOV AX,DATAS    MOV DS,AX    MOV SI, 0;SI置零    MOV COUNT, 0;COUNT置零LOP:    MOV AH, 01H    INT 21H;回显输入单个字符    ;----------------------------------------------------------------    CMP AL, [SYMBOL]    JZ TOKEN;判断是否是空格，如果是空格则跳转到TOKEN    ;----------------------------------------------------------------    CMP AL, [SYMBOL+1];判断是否是DEl键，如果是则将SI减1，并重新输出    MOV FLAG, 00H;将FLAG置零，DELETECALL可以返回到LOP    JZ DELETECALL    ;----------------------------------------------------------------    MOV [BUFFER+SI], AL;如果不是空格和退格将字符存入缓冲区    ADD SI, 1    ADD COUNT, 1    LOOP LOP;循环LOP2:    MOV AH, 01H    INT 21H;回显输入单个字符    ;----------------------------------------------------------------    CMP AL, [SYMBOL+1];判断是否是DEl键，如果是则将SI减1，并重新输出    MOV FLAG, 03H;将FLAG置零，DELETECALL可以返回到LOP    JZ DELETECALL    ;----------------------------------------------------------------    CMP AL, [SYMBOL+3];判断是否是退出编辑键    JZ KEEPFILE    ;----------------------------------------------------------------    MOV [BUFFER+SI], AL;如果不是空格和退格将字符存入缓冲区    ADD SI, 1    ADD COUNT, 1    LOOP LOP2;循环TOKEN:    SUB COUNT, 1    SUB SI, 1;0-SI是字符串内容    ;识别单个词法单元【命令】，然后继续识别    ;MOV [BUFFER+SI], 24H    ;LEA DX, BUFFER    ;MOV AH, 09H    ;INT 21H    ;显示指令    ;----------------------------------------------------------------    ;识别是否是'create'指令TOKENCREATE:    CMP SI, 05H    ;判断长度，如果不是6则跳转到TOKENEDIT    JNZ TOKENREAD    MOV CX, SI    MOV AX, DATAS    MOV DS, AX    MOV ES, AX    LEA SI, BUFFER    LEA DI, CREATE    REPZ CMPSB    MOV COMMAND,00H    JZ INPUTFILENAME;如果是'create'则跳转    JNZ TOKENDELETE;如果不是则跳转到'TOKENDELETE'    ;---------------------------------------------------------------TOKENREAD:    CMP SI, 03H    JNZ ERRORCALL    MOV CX, SI    MOV AX, DATAS    MOV DS, AX    MOV ES, AX    LEA SI, BUFFER    LEA DI, READ    REPZ CMPSB    MOV COMMAND,01H    JZ INPUTFILENAME;是读命令则跳转到输入“文件名字”    JNZ TOKENEDIT;不是则跳转到"TOKENEDIT"TOKENEDIT:    MOV AX, 03H    MOV SI, AX    CMP SI, 03H    JNZ ERRORCALL    MOV CX, SI    MOV AX, DATAS    MOV DS, AX    MOV ES, AX    LEA SI, BUFFER    LEA DI, EDIT    REPZ CMPSB    MOV COMMAND, 02H    JZ INPUTFILENAME;是编辑命令则跳转到输入“文件名字”    JNZ ERRORCALL;如果不是则跳转到'ERRORCALL'TOKENDELETE:    MOV SI, 05H    MOV CX, SI    MOV AX, DATAS    MOV DS, AX    MOV ES, AX    LEA SI, BUFFER    LEA DI, DELETE    REPZ CMPSB    MOV COMMAND,03H    JZ INPUTFILENAME;如果是'create'则跳转    JNZ ERRORCALL;如果不是则跳转到'ERROECALL'DELETECALL:    CMP COUNT, 00H    JZ S0    CMP COUNT, 01H    SUB SI, 1    SUB COUNT, 1    JZ S1    JNZ S2    ;----------------------------------------------------------------S0: MOV BH, 00H    MOV AH, 03H    INT 10H    ;得到光标的位置    ;----------------------------------------------------------------    JZ NEXT1S1:     MOV [BUFFER+SI], 24H;将光标前一个位置设为终结符    ;----------------------------------------------------------------    MOV DL, 20H    MOV AH, 02H    INT 21H    MOV BH, 00H    MOV AH, 03H    INT 10H    ;得到光标的位置    ;----------------------------------------------------------------    SUB DL, 1    MOV AH, 02H    INT 10H    JZ NEXT1S2:    MOV [BUFFER+SI], 24H;将光标前一个位置设为终结符    ;----------------------------------------------------------------    MOV DL, 20H    MOV AH, 02H    INT 21H    ;输出空格覆盖删掉的字符    ;----------------------------------------------------------------    MOV BH, 00H    MOV AH, 03H    INT 10H    ;得到光标的位置    ;----------------------------------------------------------------    MOV AX, DX    MOV AH, 00H    SUB AX, 1    MOV DL, 4FH    DIV DL    ;判断光标位置是否是4F的倍数    ;获得当前光标位置，调用参数BH=页号    ;返回参数CH = 光标开始行，C L= 光标结束行    ;返回参数DH = 行， DL = 列    ;----------------------------------------------------------------    CMP AH, 00H    JZ STEP1    JNZ STEP2STEP1:    MOV BH, 00H    MOV AH, 03H    INT 10H    ;得到光标的位置    ;----------------------------------------------------------------    SUB DH, 01H    ADD DL, 4EH    MOV AH, 02H    INT 10H    MOV DL, 20H    MOV AH, 02H    INT 21H    ;回到上一行的末尾    MOV BH, 00H    MOV AH, 03H    INT 10H    ;得到光标的位置    ;----------------------------------------------------------------    SUB DH, 01H    ADD DL, 4FH    MOV AH, 02H    INT 10H    JMP NEXT1    ;光标位置已经为0，退行，列为终点    ;----------------------------------------------------------------STEP2:    MOV BH, 00H    MOV AH, 03H    INT 10H    ;得到光标的位置    ;----------------------------------------------------------------    SUB DL, 01H    MOV AH, 02H    INT 10H    ;列减一    ;----------------------------------------------------------------NEXT1:    CMP FLAG, 00H    JZ LOP    CMP FLAG, 01H    JZ LOP1    CMP FLAG, 03H    JZ LOP2    MOV AH, 4CH    INT 21H    ;回到循环位置    ;----------------------------------------------------------------INPUTFILENAME:    MOV CX, SI    MOV SI, 00HZERO:    MOV [BUFFER+SI], 00H    ADD SI, 1    SUB CX, 1    CMP CX, 00H    JNZ ZERO    MOV SI, 0    MOV COUNT, 0    ;缓冲区清零LOP1:    MOV AH, 01H    INT 21H    ;回显输入单个字符    CMP AL, 0DH    JNZ SWITCH2SWITCH1:    CMP COMMAND, 00H    JZ CREATEFILE    CMP COMMAND,01H    JZ READFILE    CMP COMMAND, 02H    JZ EDITFILE    CMP COMMAND, 03H    JZ DELETEFILE    MOV AH, 4CH    INT 21HSWITCH2:    CMP AL, [SYMBOL+1];判断是否是DEl键，如果是则将SI减1，并重新输出    MOV FLAG,01H;将FLAG置01H，使DELETECALL可以返回到LOP1    JZ DELETECALL    ;----------------------------------------------------------------    MOV [BUFFER+SI], AL;将字符存入缓冲区    ADD SI, 1    ADD COUNT, 1    LOOP LOP1;循环    MOV AH, 4CH    INT 21HCREATEFILE:    MOV [BUFFER+SI], 24H    LEA DX, BUFFER    MOV CX, 00H    MOV AH, 3CH    INT 21H    ;根据字符串内容创建文件    MOV HANDLE, AX    JC FAILCREATEFILE    JNC SUCCESSCREATEFILE    ;如果成功创建则输出成功信息    ;-----------------------------------------------------------------READFILE:    MOV [BUFFER+SI], 24H    LEA DX, BUFFER    MOV AL, 02H    MOV AH, 3DH    INT 21H    ;获得文件句柄，打开文件    ;-----------------------------------------------------------------    MOV HANDLE, AX    MOV BX, AX    LEA DX, BUFFER    MOV CX, 100    MOV AH, 3FH    INT 21H    ;读文件    MOV BX, AX    MOV BUFFER[BX], 24H    LEA DX, BUFFER    MOV AH, 09H    INT 21H    MOV DL, 0AH    MOV AH, 02H    INT 21H    ;显示文件    ;-----------------------------------------------------------------    MOV BX, HANDLE    MOV AH, 3EH    INT 21H    ;关闭文件    ;-----------------------------------------------------------------    JMP SUCCESSREADFILE    MOV AH, 4CH    INT 21HEDITFILE:    MOV [BUFFER+SI], 24H    MOV CX, SI    MOV AX, DATAS    MOV DS, AX    MOV ES, AX    LEA SI, BUFFER    LEA DI, FILENAME    REP MOVSB    ;保留文件名字    LEA DX, BUFFER    MOV AL, 02H    MOV AH, 3DH    INT 21H    ;获得文件句柄，打开文件    ;-----------------------------------------------------------------    MOV CX, SI    MOV SI, 0ZERO0:    MOV [BUFFER+SI], 00H    SUB CX, 1    ADD SI, 1    CMP CX, 00H    JNZ ZERO0    ;缓冲区清零    MOV SI, 0    MOV COUNT, 0    MOV HANDLE, AX    MOV BX, AX    LEA DX, BUFFER    MOV CX, 100    MOV AH, 3FH    INT 21H    ;读文件MAKESUREBYTES:    MOV SI, 0LOP4:    CMP [BUFFER+SI], 24H    JZ NEXT3    CMP [BUFFER+SI], 00H    JZ NEXT3    ADD SI, 1    LOOP LOP4NEXT3:    MOV [BUFFER+SI], 24H    LEA DX, BUFFER    MOV AH, 09H    INT 21H    MOV [BUFFER+SI], 00H    MOV COUNT, SI    JMP LOP2    MOV AH, 4CH    INT 21HKEEPFILE:    MOV [BUFFER+SI], 24H    LEA DX, FILENAME    MOV CX, 02H    MOV AH, 3CH    INT 21H    MOV HANDLE, AX    MOV BX, AX    LEA DX, BUFFER    MOV AH, 40H    MOV CX, 100    INT 21H    MOV DL, 0AH    MOV AH, 02H    INT 21H    MOV CX, SI    MOV SI, 00HZERO6:    MOV [BUFFER+SI], 00H    SUB CX, 1    ADD SI, 1    CMP CX, 00H    JNZ ZERO6    ;缓冲区清零    MOV COUNT, 0    MOV SI, 0       MOV BX, HANDLE    MOV AH, 3EH    INT 21H    ;关闭文件    ;-----------------------------------------------------------------    JMP LOP    MOV AH, 4CH    INT 21HDELETEFILE:    MOV [BUFFER+SI], 24H    LEA DX, BUFFER    MOV AH, 41H    INT 21H    LEA DX, DELETESUCCESSMESSAGE    MOV AH, 09H    INT 21H    MOV DL, 0AH    MOV AH, 02H    INT 21H    MOV CX, SI    MOV SI, 00HZERO5:    MOV [BUFFER+SI], 00H    SUB CX, 1    ADD SI, 1    CMP CX, 00H    JNZ ZERO5    ;缓冲区清零    MOV SI, 0    MOV COUNT,0    JMP LOPSUCCESSCREATEFILE:    MOV BX, HANDLE    MOV AH, 3EH    INT 21H    LEA DX, FILESUCCESSMESSAGE    MOV AH, 09H    INT 21H    MOV DL, 0AH    MOV AH, 02H    INT 21H    MOV CX, COUNT    MOV SI, 0ZERO3:    MOV [BUFFER+SI], 00H    SUB CX, 1    ADD SI, 1    CMP CX, 00H    JNZ ZERO3    ;缓冲区清零    MOV SI, 0    MOV COUNT, 0    JMP LOP    MOV AH, 4CH    INT 21H    ;输出成功创建文件提示    ;-----------------------------------------------------------------FAILCREATEFILE:    LEA DX, FILEFAILMESSAGE    MOV AH, 09H    INT 21H    MOV AH, 4CH    INT 21H    ;输出失败创建文件提示    ;-----------------------------------------------------------------SUCCESSREADFILE:    MOV BX, HANDLE    MOV AH, 3EH    INT 21H    MOV CX, COUNT    MOV SI, 0ZERO4:    MOV [BUFFER+SI], 00H    SUB CX, 1    ADD SI, 1    CMP CX, 00H    JNZ ZERO4    ;缓冲区清零    MOV COUNT, 0    MOV SI, 0    JMP LOP    MOV AH, 4CH    INT 21H    ;输出成功读取文件提示    ;-----------------------------------------------------------------FAILREADFILE:    LEA DX, READFAILMESSAGE    MOV AH, 09H    INT 21H    MOV AH, 4CH    INT 21H    ;输出失败读取文件提示    ;-----------------------------------------------------------------ERRORCALL:    LEA DX, ERRORFAILMESSAGE    MOV AH, 09H    INT 21H    MOV AH, 4CH    INT 21HCODES ENDS    END START