sparkymat » ruby

Programming Blog

max — Tue, 18 Nov 2008 07:00:53 +0000

I have started a programming blog here.

Ruby 1.9 on Openmoko!!

max — Sun, 10 Aug 2008 11:21:40 +0000

Managed to compile and package Ruby 1.9.0-3 for Openmoko!!!

[Update]

Here’s the ruby package without dev and documentation (this would be smaller and more appropriate on the phone) – ruby19_190-3_armv4t

Rubygame 3 on Ruby 1.9

max — Wed, 02 Apr 2008 13:53:34 +0000

Creating a Ruby 1.9 sandbox

1. mkdir /home/user/ruby19 (example folder)
2. cd /home/user/ruby19
3. mkdir src
4. cd src
5. wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.0-1.tar.bz2
6. tar -jxvf ruby-1.9.0-1.tar.bz2
7. cd ruby-1.9.0-1
8. ./configure –prefix=/home/user/ruby19
9. make
10. make install

Now you can switch to this sandbox at any time by executing ‘export PATH=/home/user/ruby19/bin:$PATH’ in a shell.

Chipmunk Installation

Chipmunk is required for Rubygame 3

1. wget http://files.slembcke.net/chipmunk/release/ChipmunkLatest.tgz
2. tar -zxvf ChipmunkLatest.tgz
3. cd Chipmunk-4.0.2
4. cd ruby
5. export PATH=/home/user/ruby19/bin:$PATH (* switching to Ruby 1.9 sandbox)
6. ruby extconf.rb
7. make
8. make install

Rubygame 3 Installation

1. mkdir /home/user/rubygame (example path)
2. cd /home/user/rubygame
3. svn co https://rubygame.svn.sourceforge.net/svnroot/rubygame/trunk rubygame3
4. cd rubygame3/
5. export PATH=/home/user/ruby19/bin:$PATH (* switching to Ruby 1.9 sandbox)
6. cat Rakefile | sed s/PLATFORM/RUBY_PLATFORM/ > Rakefile.new;mv Rakefile.new Rakefile (* this replaces PLATFORM with RUBY_PLATFORM in the Rakefile)
7. CFLAGS=”-I/home/user/ruby19/include/ruby-1.9.0 -I/home/user/ruby19/include/ruby-1.9.0/i686-linux” rake install
8. cd ~/rubygame/rubygame3/samples/
9. ruby chimp.rb
10. Punch the monkey!!

Building an “include” graph

max — Mon, 07 Aug 2006 03:08:38 +0000

How easy would it be to build include graphs in ruby?

Here's my first attempt:

PLAIN TEXT

RUBY:

$list_of_files = Hash.new
$list_of_files.each {|node|
node = Array.new
}
def store_includes(pathname)
lines = IO.readlines(pathname)
lines.each {|line|
if line.include? "#include"
include_file = line[line.index("#include")+"#include".size,line.size]
fidx = 0
sidx = 0
if include_file.include?("\"")
fidx = include_file.index("\"") + 1
sidx = include_file.index("\"",fidx+1) - 1
end
if include_file.include?('<')
fidx = include_file.index('<') + 1
sidx = include_file.index('>') - 1
end
include_file = include_file[fidx..sidx]
$list_of_files[pathname].add(include_file)
end
}
end
def iterate_files(pathname)
list = [] #alternate way of initializing an array
if pathname=="." or pathname==nil
list = Dir["*"]
else
list = Dir[pathname + File::SEPERATOR + "*"]
end
list.each { |path|
if File.filetype(path) == "directory"
iterate_files(pathname)
end
if File.filetype(path) == "file"
store_includes(path)
end
}
end

Any comments?

File extensions in ruby

max — Sun, 06 Aug 2006 07:06:47 +0000

Is there a more efficient way to extract the file extensions in ruby? I currently do the following.

PLAIN TEXT

RUBY:

ext = File.basename(filepath).reverse.split('.')[0].reverse