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Add Ruby support contributed by Masaki Fukushima.

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@518 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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Thien-Thi Nguyen 2000-07-05 18:58:49 +00:00
commit 618e0eff61
39 changed files with 3754 additions and 10 deletions
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18
Examples/ruby/simple/Makefile Normal file
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TOP = ../..
SWIG = $(TOP)/../swig
SRCS = example.c
TARGET = example
INTERFACE = example.i
all::
$(MAKE) -f $(TOP)/Makefile SRCS='$(SRCS)' SWIG='$(SWIG)' \
TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' ruby
static::
$(MAKE) -f $(TOP)/Makefile SRCS='$(SRCS)' SWIG='$(SWIG)' \
TARGET='myruby' INTERFACE='$(INTERFACE)' ruby_static
clean::
rm -f *_wrap* *.o *~ *.so myruby .~* core

18
Examples/ruby/simple/example.c Normal file
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/* File : example.c */
/* A global variable */
double Foo = 3.0;
/* Compute the greatest common divisor of positive integers */
int gcd(int x, int y) {
int g;
g = y;
while (x > 0) {
g = x;
x = y % x;
y = g;
}
return g;
}

5
Examples/ruby/simple/example.i Normal file
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/* File : example.i */
%module example
extern int gcd(int x, int y);
extern double Foo;

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Examples/ruby/simple/index.html Normal file
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<html>
<head>
<title>SWIG:Examples:ruby:simple</title>
</head>
<body bgcolor="#ffffff">
<tt>SWIG/Examples/ruby/simple/</tt>
<hr>
<H2>Simple Ruby Example</H2>
<tt>$Header$</tt><br>
<p>
This example illustrates how you can hook Ruby to a very simple C program containing
a function and a global variable.
<h2>The C Code</h2>
Suppose you have the following C code:
<blockquote>
<pre>
/* File : example.c */
/* A global variable */
double Foo = 3.0;
/* Compute the greatest common divisor of positive integers */
int gcd(int x, int y) {
int g;
g = y;
while (x > 0) {
g = x;
x = y % x;
y = g;
}
return g;
}
</pre>
</blockquote>
<h2>The SWIG interface</h2>
Here is a simple SWIG interface file:
<blockquote>
<pre>
/* File: example.i */
%module example
extern int gcd(int x, int y);
extern double Foo;
</pre>
</blockquote>
<h2>Compilation</h2>
<ol>
<li><tt>swig -ruby <a href="example.i">example.i</a></tt>
<p>
<li>Compile <tt><a href="example_wrap.c">example_wrap.c</a></tt> and <tt><a href="example.c">example.c</a></tt>
to create the extension <tt>example.so</tt>.
</ol>
<h2>Using the extension</h2>
Click <a href="run.rb">here</a> to see a script that calls our C functions from Ruby.
<h2>Key points</h2>
<ul>
<li>Use the <tt>require</tt> function to load your extension library from Ruby. For example:
<blockquote>
<pre>
require 'example'
</pre>
</blockquote>
<li>C functions work just like Ruby functions. For example:
<blockquote>
<pre>
g = Example.gcd(42,105)
</pre>
</blockquote>
<li>C global variables are accessed through module method. For example:
<blockquote>
<pre>
a = Example.Foo
</pre>
</blockquote>
</ul>
<hr>
</body>
</html>

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Examples/ruby/simple/run.rb Normal file
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# file: run.rb
require 'example'
# Call our gcd() function
x = 42
y = 105
g = Example.gcd(x,y)
printf "The gcd of %d and %d is %d\n",x,y,g
# Manipulate the Foo global variable
# Output its current value
print "Foo = ", Example.Foo, "\n"
# Change its value
Example.Foo = 3.1415926
# See if the change took effect
print "Foo = ", Example.Foo, "\n"