Hi all:
My problem is:
I have a file which content is like below 100f1010 0f100f10 0e100e10 (The format is ASCII text, with CRLF line terminators, which I got by typing "file myfile" and thanks Manish and Grigoriy ).
Right now I want to transfer it to hex format each 2 chars and save it as binary file like below:
0f 10 0f 10 original input
Ox0f 0x10 0x0f 0x10 final output
0e 10 0e 10 original input
0x0e 0x10 0x0e 0x10 final output
And my function is like below
while(!feof(fIn))
{
fgets(cTemString, 3, fIn);
uValue = atoi(cTemString);
fwrite(&uValue, sizeof(unsigned char),1,fout);
}
But I have some problems right now,
1. Does there have any atoh function, transfer char* to hex value.
2. How can I avoid getting the control character, like /r /c,etc by using fgets?
I know I can use fgetc and isspace to check whether the character is control character. But it is too slow, since read 1 char each time. Can any acceleration help me?
Appreciate all your help,
cckuo
-----Original Message-----
From: kernelnewbies-bounce@xxxxxxxxxxxx [mailto:kernelnewbies-bounce@xxxxxxxxxxxx] On Behalf Of Grigoriy Shcherbyak
Sent: Wednesday, December 19, 2007 4:42 PM
To: kernelnewbies@xxxxxxxxxxxx
Subject: Re: how to know a binary or text file and show all the information in file
Hello!
"File" utility should give you the information on what this file is.
Just run
file myfile.dat.
If you mean that you need to transform binary in printable form, then
look to base64 coding functionality from openssl package - it can do
this.
Many tools can open binary files, it depends on what you want it to do.
Regards,
On Dec 19, 2007 10:18 AM, <C_C_Kuo@xxxxxxxxxxxxxx> wrote:
> Dear all:
> Could someone tell me how to know the file is binary or ASCII?
> I know both of them are stream of bytes but interpreted by different ways.
> My questions are:
> 1. How can I know this without opening it?
> 2. how can I see all the information in a file, include all the control characters, like linein, print character and line feed, etc.
> 3. Is there any tool on Linux can open binary file?
> 4. Is there any tool on Linux can transfer ASCII to binary and binary to ASCII?
>
> Appreciate your help,
> cckuo
>
>
>
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N猛y鈉槃逶??zv陽z
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