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femke
 Post subject: hexdump to file
PostPosted: June 2nd, 2008, 4:11 pm 
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Joined: June 2nd, 2008, 4:01 pm
Posts: 16
i have an old hexdump from a file that i want to create back (about 3Kb)

Code:
FFD8FFE000104A46494600010100000100010000FFDB00430003020203................


i tried to put them in pairs of 2 characters and use numput but i cannot get it to a saved file Numput( %A%,testbin,counter) but i do not find a way to save the testbin variable in a file

can anyone give advice?

thanks


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engunneer
 Post subject:
PostPosted: June 2nd, 2008, 10:01 pm 
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Joined: August 30th, 2005, 8:43 pm
Posts: 8667
Location: Salem, MA
what is your expected output?

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(Common Answers) - New Tutorials Forum - Humongous FAQ


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femke
 Post subject:
PostPosted: June 3rd, 2008, 9:38 am 
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Joined: June 2nd, 2008, 4:01 pm
Posts: 16
it is a jpg ,an avatar that is send by mail instead of attachment

i found this forum topic but the link to the getbyte is dead

http://www.autohotkey.com/forum/topic3229.html

i wonder why when it seems so simple in c++ it is not implemented in ahk
or am i missing something (i cannot program so maybe it only looks simple.......)javascript:emoticon(':(')

if anyone still has the getbyte and putbyte mentioned in the forum post please leave a note


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SKAN
 Post subject:
PostPosted: June 3rd, 2008, 10:14 am 
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Joined: December 26th, 2005, 4:40 pm
Posts: 8776
Here is a template on how you could do it :

Code:
hex=
( join
424D3E000000000000003600000028000000010000000200000001001800000000000800000000000000000000
000000000000000000C0FFFF00FF404000
)

nSize := StrLen( hex ) // 2
Hex2Bin( BMP, hex )           ; Convert Hex to Binary Byte Array

; Create a file and Write the Byte Array to it

FileIO16_Init()
hFile := FCreate( "twopixel.bmp", F_NORMAL )
FWrite( hFile, &BMP, nSize )
FClose( hFile )

; lets test the created file

Gui, Margin,0,0
Gui, Add, Picture, w640 h480, twopixel.bmp ; stretch bitmap to create gradient
Gui, Show
Return

Hex2Bin(ByRef bin, hex) { ; Hex2Bin(fun,"8B4C24") = MCode(fun,"8B4C24")
   ; Laszlo : http://www.autohotkey.com/forum/viewtopic.php?p=180469#180469
   Static fun
   If (fun = "") {
      h:="568b74240c8a164684d2743b578b7c240c538ac2c0e806b109f6e98ac802cac0e104880f8"
       . "a164684d2741a8ac2c0e806b309f6eb80e20f02c20ac188078a16474684d275cd5b5f5ec3"
      VarSetCapacity(fun,StrLen(h)//2)
      Loop % StrLen(h)//2
         NumPut("0x" . SubStr(h,2*A_Index-1,2), fun, A_Index-1, "Char")
   }
   VarSetCapacity(bin,StrLen(hex)//2)
   dllcall(&fun, "uint",&bin, "Str",hex, "cdecl")
}

#Include FileIO16.ahk ; http://www.autohotkey.net/~Skan/wrapper/FileIO16/FileIO16.ahk


:)


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femke
 Post subject:
PostPosted: June 3rd, 2008, 1:51 pm 
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Joined: June 2nd, 2008, 4:01 pm
Posts: 16
thanks Skan

it will take me some time to unravel how it works but it looks good javascript:emoticon(':D')

will let you know the result


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SKAN
 Post subject:
PostPosted: June 3rd, 2008, 1:53 pm 
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Joined: December 26th, 2005, 4:40 pm
Posts: 8776
do not forget tp download the include file: FileIO16.ahk :)


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femke
 Post subject:
PostPosted: June 5th, 2008, 6:11 pm 
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Joined: June 2nd, 2008, 4:01 pm
Posts: 16
thanks Skan it worked well javascript:emoticon(':D')


it took some time to unravel your programs but it was worth it!!


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toralf-n-l-i
 Post subject:
PostPosted: February 15th, 2010, 10:36 pm 
Hi SKAN,

Since I didn't find a post where you posted the File16IO.ahk directly, I'll post here. I used your FileReadEx function quite a lot. But it has one drawback: It can't read from the end of a file with an offset. So I modified it a little.
Code:
FileReadEx2( F,ByRef V,B,O=0 )  {  ;B= Number of bytes, O = Offset, when negative from EOF   
 by:= (O<0 ? B+1 : B), VarSetCapacity(V,By,0), H:=DllCall("_lopen",Str,F,UInt,0)
 IfLess,H,1, Return,-1
 DllCall( "_llseek",UInt,H,UInt,O, UInt,(O < 0 ? 2 : 0) )
 Return DllCall("_lread",UInt,H,Str,V,UInt,by) ( DllCall("_lclose",UInt,H)+n )     
}


The only drawback is now, that in case 128 bytes from EOF should be read, it will be this
Code:
FileReadEx2( File,Var,128,-128 )


Ciao
toralf


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