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authorPatrick J Cherry <patrick@bytemark.co.uk>2011-11-10 16:58:02 +0000
committerPatrick J Cherry <patrick@bytemark.co.uk>2011-11-10 16:58:02 +0000
commit139fc8ae74c5019003e1b4fa350240f8e9fedebc (patch)
tree105f82ae90082dfa16b94a4b200e37570e712453 /lib
parente272804ec875ab1562a5ecc3f58bcaf135fe6fbb (diff)
Changed mauve config to allow including directory and filenames.
Diffstat (limited to 'lib')
-rw-r--r--lib/object_builder.rb139
1 files changed, 98 insertions, 41 deletions
diff --git a/lib/object_builder.rb b/lib/object_builder.rb
index 8f338ff..e012b5a 100644
--- a/lib/object_builder.rb
+++ b/lib/object_builder.rb
@@ -65,9 +65,103 @@ class ObjectBuilder
@@sequence += 1
"anon.#{Time.now.to_i}.#{@@sequence}"
end
+
+ #
+ # Merge a file into self. If the file is a relative path, it is relative to
+ # the file from which it has been included.
+ #
+ # @param [String] file The filename to include
+ #
+ # @raise [BuildException] When an expected exception is raised
+ # @raise [NameError]
+ # @raise [SyntaxError]
+ # @raise [ArgumentError]
+ #
+ # @returns [ObjectBuilder] self
+ def include_file(file)
+ #
+ # Share the current directory with all instances of this class.
+ #
+ @@directory ||= nil
+
+ #
+ # Do we have an absolute path?
+ #
+ file = File.join(@@directory, file) if !@@directory.nil? and '/' != file[0,1]
+
+ #
+ # Resolve the filename.
+ #
+ file = File.expand_path(file)
+
+ #
+ # Save the current wd
+ #
+ oldwd = @@directory
+
+ #
+ # Set the new one
+ #
+ @@directory = File.dirname(file)
+
+ #
+ # Read the file and eval it.
+ #
+ instance_eval(File.read(file), file)
+
+ #
+ # Reset back to where we were.
+ #
+ @@directory = oldwd
+
+ self
+ rescue NameError, NoMethodError => ex
+ #
+ # Ugh. Catch NameError and re-raise as a BuildException
+ #
+ if ex.backtrace.find{|l| l =~ /^#{file}:(\d+):/}
+ build_ex = BuildException.new "Unknown word `#{ex.name}' in #{file} at line #{$1}"
+ build_ex.set_backtrace ex.backtrace
+ raise build_ex
+ else
+ raise ex
+ end
+ rescue SyntaxError, ArgumentError => ex
+ if ex.backtrace.find{|l| l =~ /^#{file}:(\d+):/}
+ build_ex = BuildException.new "#{ex.message} in #{file} at line #{$1}"
+ build_ex.set_backtrace ex.backtrace
+ raise build_ex
+ else
+ raise ex
+ end
+ end
+ #
+ # Loads a stack of files in a directory, and merges them into the current object
+ #
+ # @params [String] dir Directory in which to search for files.
+ # @params [Regexp] regexp Regular expression for filename to include.
+ #
+ # @returns [ObjectBuilder] self
+ def include_directory(dir, regex = /^[a-zA-Z0-9_-]+\.conf$/)
+ files = []
+ #
+ # Exceptions are caught by #include_file
+ #
+ Dir.entries(dir).sort.each do |entry|
+ next unless entry =~ regex
+
+ file = File.join(dir,entry)
+ next unless File.file?(file)
+
+ include_file(file)
+ end
+
+ self
+ end
+
class << self
-
+
# Defines a new builder
#
# @param [String] word The builder's name
@@ -125,48 +219,11 @@ class ObjectBuilder
@result.__send__("#{word}=".to_sym, true)
end
end
-
- # Loads a new file
- #
- # @param [String] file
- def load(file)
- parse(File.read(file), file)
- end
-
- # Parses a string
- #
- # @param [String] string The string to parse
- # @param [String] file The filename that the string was read from, for helpful error messages.
- #
- # @raise [BuildException] When an expected exception is raised
- # @raise [NameError]
- # @raise [SyntaxError]
- # @raise [ArgumentError]
- #
- # @return [ObjectBuidler] The
- def parse(string, file="string")
+
+ def parse(s)
builder = self.new
- builder.instance_eval(string, file)
+ builder.instance_eval(s)
builder.result
- rescue NameError, NoMethodError => ex
- #
- # Ugh. Catch NameError and re-raise as a BuildException
- #
- if ex.backtrace.find{|l| l =~ /^#{file}:(\d+):/}
- build_ex = BuildException.new "Unknown word `#{ex.name}' in #{file} at line #{$1}"
- build_ex.set_backtrace ex.backtrace
- raise build_ex
- else
- raise ex
- end
- rescue SyntaxError, ArgumentError => ex
- if ex.backtrace.find{|l| l =~ /^#{file}:(\d+):/}
- build_ex = BuildException.new "#{ex.message} in #{file} at line #{$1}"
- build_ex.set_backtrace ex.backtrace
- raise build_ex
- else
- raise ex
- end
end
def inherited(*args)