06. Destroying files

Corrupt files: principle: Binary way to open files, byte by bit replaced by random characters;;( Inspired by the Baidu Cloud, it replaced the video all 0)
Two kinds of usage: ① the user to manually select the file, break the window prompt after the completion of the destruction, ② command line invocation and other ways to pass parameters, the destruction is not possible after the window popup; so: Write the kernel code (some functions) of the corrupted file in the file Demagefilefun.ahk, and then in the " demagefile-manually select. Ahk "and" Demagefile.ahk "include Demagefilefun.ahk

  
 

   
  

  
;为了省事把所有变量都global了
   
  

  
;demageFileFun.ahk
   
  

  
demageFile(fileName) {
   
  

  
 global
   
  

  
 openFile(fileName)
   
  

  
 writeFileTimes()
   
  

  
 file.close()
   
  

  
}
   
  

  

   
  

  
openFile(filename){
   
  

  
 global
   
  

  
 file := FileOpen(filename,"rw")
   
  

  
 FileGetSize,size,%filename%
   
  

  
 LOOPTIMES := round(RATE * size); Writechar writes one byte at a time, so how many bytes are looped;
   
  

  
}
   
  

  

   
  

  
writeFileTimes(){
   
  

  
 global
   
  

  
 wirteFile(0); The beginning, the middle, and the end of the file are damaged;
   
  

  
 wirteFile(round(size * 0.5))
   
  

  
 wirteFile(round(size * (1- RATE )))
   
  

  
}
   
  

  
wirteFile(pos) {To damage the back part of the specified position of the file;
   
  

  
 global
   
  

  
 file.seek(pos)
   
  

  
 loop,%LOOPTIMES%
   
  

  
 {
   
  

  
 Random, rand , 0, 127
   
  

  
 file.Writechar(rand) ;writeChar一次写入一个字节;参数rand是整数也行; 
   
  

  
 }
   
  

  
}
   
  

  

   
  

  
^escape::exitapp
  
 

  
 

   
  

  
;2015-12-31 星期四 12:04
   
  

  
;demageFile-手动选择.ahk
   
  

  
#NoTrayIcon
   
  

  
#singleinstance force
   
  

  
if 1=
   
  

  
{
   
  

  
 FileSelectFile, deFile
   
  

  
 if 1=
   
  

  
 exitapp,0
   
  

  
} else {
   
  

  
 ;可以把文件拖放到图标上的方式来传递参数
   
  

  
 deFile =%1%
   
  

  
}
   
  

  

   
  

  
RATE := 0.2
   
  

  

   
  

  
try {
   
  

  
 demageFile(deFile) 
   
  

  
 msgbox 损坏成功
   
  

  
 exitapp,0
   
  

  
} catch e {
   
  

  
 msgbox 损坏失败
   
  

  
 msgbox %e%
   
  

  
 exitapp,1
   
  

  
} finally {
   
  

  
 file.close()
   
  

  
}
   
  

  

   
  

  
return 
   
  

  

   
  

  
#include demageFileFun.ahk
  
 

  
 

   
  

  
;2015-12-31 星期四 12:04
   
  

  
;demageFile.ahk
   
  

  
#NoTrayIcon
   
  

  
#singleinstance force
   
  

  
if 1=
   
  

  
{
   
  

  
 msgbox 必须传入参数:文件名
   
  

  
 exitapp,1
   
  

  
}
   
  

  
deFile =%1%
   
  

  
RATE := 0.2; The ratio of one corrupted file
   
  

  

   
  

  
try {
   
  

  
 demageFile(deFile) ;这里用%1%会出错...
   
  

  
 exitapp,0
   
  

  
} catch e {
   
  

  
 msgbox %e%
   
  

  
 exitapp,1
   
  

  
} finally {
   
  

  
 file.close()
   
  

  
}
   
  

  

   
  

  
return 
   
  

  

   
  

  
#include demageFileFun.ahk
  
 

 
   
  

  
    
   
Instructions for use:

  
    
   
注意:一旦损坏,数据无法恢复;请谨慎使用!!
 
   
  

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06. Destroying files