Reading binary file written by C program

Ruby
1

Hi all,

I’ve learned some basic of Ruby and I need to write a program that can
read
data from binary files written by a C program. I was supposed to use the
company library to do this using C++ but I really feel that this job
could
be done more quickly with the advanced features of Ruby. The binary
files
are generally directly dumped by C structs. Is there a “ruby way” of
doing
this? Thanks in advance.

2

I would start here:
http://raa.ruby-lang.org/search.rhtml?search=binary
(Also, check on rubyforge.org)

You might want to look at Array#pack and String#unpack.
Also, make sure to open up the file as binary!

Enjoy.

3

On 3/22/07, Paul S. [email protected] wrote:

I would start here:
http://raa.ruby-lang.org/search.rhtml?search=binary
(Also, check on rubyforge.org)

in there you will see the binary-parse gem, I wrote it to do exactly
what you are describing for my own needs.

pth

4

On Fri, 23 Mar 2007, Yacao Wang wrote:

Hi all,

I’ve learned some basic of Ruby and I need to write a program that can read
data from binary files written by a C program. I was supposed to use the
company library to do this using C++ but I really feel that this job could
be done more quickly with the advanced features of Ruby. The binary files
are generally directly dumped by C structs. Is there a “ruby way” of doing
this? Thanks in advance.

look for joel’s bitstruct on rubyforge

-a

5

On 3/22/07, [email protected] [email protected] wrote:

look for joel’s bitstruct on rubyforge

-a

be kind whenever possible… it is always possible.

  • the dalai lama

Which is a fast, better solution for simple structures, binary-parse
can handle very complex nested structures, arrays and the like.

pth