programmatically replace characters in a text file?

[cheesywillie]

How would this be done? For example find every "a" and replace them
with a "b".

Sorry if i am not being descriptive enough, but i don't know how else
to phrase the question. If you need any additional information just
ask.

Thanks for reading.

 

[Victor Bazarov]

How would this be done? For example find every "a" and replace them
with a "b".

Sorry if i am not being descriptive enough, but i don't know how else
to phrase the question. If you need any additional information just
ask.

Open the file for both read and write
While the file is OK
Read some bytes from the file into a buffer
Replace chars in the buffer as needed
Position the file pointer back
Write the buffer back into the file
End-while

V

 

[James Kanze]

How would this be done? For example find every "a" and replace them
with a "b".

std::replace_copy( std::istreambuf_iterator< char >( source ),
std::istreambuf_iterator< char >(),
std:streambuf_iterator< char >( dest ),
'a',
'b' ) ;

 

[AnonMail2005]

How would this be done? For example find every "a" and replace them
with a "b".

Sorry if i am not being descriptive enough, but i don't know how else
to phrase the question. If you need any additional information just
ask.

Thanks for reading.

Depending on what system you are on, there are utilities that can
do this w/o any programming. For instance, check out the unix
utility tr.

 

[cheesywillie]

Ok thanks alot for all of the info