The basic plumbing for modules: a modulepath config parameter, and a new

class Puppet::Module that will contain the module-related
functionality. The modulepath can be extended by setting the environment
variable PUPPETLIB



git-svn-id: https://reductivelabs.com/svn/puppet/trunk@2276 980ebf18-57e1-0310-9a29-db15c13687c0

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/puppet/modules.rb b/lib/puppet/modules.rb
new file mode 100644
index 000000000..cf611b82c
--- /dev/null
+++ b/lib/puppet/modules.rb
@@ -0,0 +1,42 @@
+# Support for modules
+class Puppet::Module
+
+    # Return an array of paths by splitting the +modulepath+ config
+    # parameter. Only consider paths that are absolute and existing
+    # directories
+    def self.modulepath
+        dirs = ENV["PUPPETLIB"].split(":") + Puppet[:modulepath].split(":")
+        dirs.select do |p|
+            p =~ /^#{File::SEPARATOR}/ && File::directory?(p)
+        end
+    end
+
+    # Find and return the +module+ that +path+ belongs to. If +path+ is
+    # absolute, or if there is no module whose name is the first component
+    # of +path+, return +nil+
+    def self.find(path)
+        if path =~ %r/^#{File::SEPARATOR}/
+            return nil
+        end
+
+        modname, rest = path.split(File::SEPARATOR, 2)
+        return nil if modname.nil? || modname.empty?
+
+        modpath = modulepath.collect { |p|
+            File::join(p, modname)
+        }.find { |f| File::directory?(f) }
+        return nil unless modpath
+
+        return self.new(modname, modpath)
+    end
+
+    # Instance methods
+
+    attr_reader :name, :path
+    def initialize(name, path)
+        @name = name
+        @path = path
+    end
+
+    private :initialize
+end