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-rwxr-xr-xplist/generator.rb229
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+#!/usr/bin/env ruby
+#
+# = plist
+#
+# Copyright 2006-2010 Ben Bleything and Patrick May
+# Distributed under the MIT License
+#
+
+module Plist ; end
+
+# === Create a plist
+# You can dump an object to a plist in one of two ways:
+#
+# * <tt>Plist::Emit.dump(obj)</tt>
+# * <tt>obj.to_plist</tt>
+# * This requires that you mixin the <tt>Plist::Emit</tt> module, which is already done for +Array+ and +Hash+.
+#
+# The following Ruby classes are converted into native plist types:
+# Array, Bignum, Date, DateTime, Fixnum, Float, Hash, Integer, String, Symbol, Time, true, false
+# * +Array+ and +Hash+ are both recursive; their elements will be converted into plist nodes inside the <array> and <dict> containers (respectively).
+# * +IO+ (and its descendants) and +StringIO+ objects are read from and their contents placed in a <data> element.
+# * User classes may implement +to_plist_node+ to dictate how they should be serialized; otherwise the object will be passed to <tt>Marshal.dump</tt> and the result placed in a <data> element.
+#
+# For detailed usage instructions, refer to USAGE[link:files/docs/USAGE.html] and the methods documented below.
+module Plist::Emit
+ # Helper method for injecting into classes. Calls <tt>Plist::Emit.dump</tt> with +self+.
+ def to_plist(envelope = true)
+ return Plist::Emit.dump(self, envelope)
+ end
+
+ # Helper method for injecting into classes. Calls <tt>Plist::Emit.save_plist</tt> with +self+.
+ def save_plist(filename)
+ Plist::Emit.save_plist(self, filename)
+ end
+
+ # The following Ruby classes are converted into native plist types:
+ # Array, Bignum, Date, DateTime, Fixnum, Float, Hash, Integer, String, Symbol, Time
+ #
+ # Write us (via RubyForge) if you think another class can be coerced safely into one of the expected plist classes.
+ #
+ # +IO+ and +StringIO+ objects are encoded and placed in <data> elements; other objects are <tt>Marshal.dump</tt>'ed unless they implement +to_plist_node+.
+ #
+ # The +envelope+ parameters dictates whether or not the resultant plist fragment is wrapped in the normal XML/plist header and footer. Set it to false if you only want the fragment.
+ def self.dump(obj, envelope = true)
+ output = plist_node(obj)
+
+ output = wrap(output) if envelope
+
+ return output
+ end
+
+ # Writes the serialized object's plist to the specified filename.
+ def self.save_plist(obj, filename)
+ File.open(filename, 'wb') do |f|
+ f.write(obj.to_plist)
+ end
+ end
+
+ private
+ def self.plist_node(element)
+ output = ''
+
+ if element.respond_to? :to_plist_node
+ output << element.to_plist_node
+ else
+ case element
+ when Array
+ if element.empty?
+ output << "<array/>\n"
+ else
+ output << tag('array') {
+ element.collect {|e| plist_node(e)}
+ }
+ end
+ when Hash
+ if element.empty?
+ output << "<dict/>\n"
+ else
+ inner_tags = []
+
+ element.keys.sort.each do |k|
+ v = element[k]
+ inner_tags << tag('key', CGI::escapeHTML(k.to_s))
+ inner_tags << plist_node(v)
+ end
+
+ output << tag('dict') {
+ inner_tags
+ }
+ end
+ when true, false
+ output << "<#{element}/>\n"
+ when Time
+ output << tag('date', element.utc.strftime('%Y-%m-%dT%H:%M:%SZ'))
+ when Date # also catches DateTime
+ output << tag('date', element.strftime('%Y-%m-%dT%H:%M:%SZ'))
+ when String, Symbol, Fixnum, Bignum, Integer, Float
+ output << tag(element_type(element), CGI::escapeHTML(element.to_s))
+ when IO, StringIO
+ element.rewind
+ contents = element.read
+ # note that apple plists are wrapped at a different length then
+ # what ruby's base64 wraps by default.
+ # I used #encode64 instead of #b64encode (which allows a length arg)
+ # because b64encode is b0rked and ignores the length arg.
+ data = "\n"
+ Base64::encode64(contents).gsub(/\s+/, '').scan(/.{1,68}/o) { data << $& << "\n" }
+ output << tag('data', data)
+ else
+ output << comment( 'The <data> element below contains a Ruby object which has been serialized with Marshal.dump.' )
+ data = "\n"
+ Base64::encode64(Marshal.dump(element)).gsub(/\s+/, '').scan(/.{1,68}/o) { data << $& << "\n" }
+ output << tag('data', data )
+ end
+ end
+
+ return output
+ end
+
+ def self.comment(content)
+ return "<!-- #{content} -->\n"
+ end
+
+ def self.tag(type, contents = '', &block)
+ out = nil
+
+ if block_given?
+ out = IndentedString.new
+ out << "<#{type}>"
+ out.raise_indent
+
+ out << block.call
+
+ out.lower_indent
+ out << "</#{type}>"
+ else
+ out = "<#{type}>#{contents.to_s}</#{type}>\n"
+ end
+
+ return out.to_s
+ end
+
+ def self.wrap(contents)
+ output = ''
+
+ output << '<?xml version="1.0" encoding="UTF-8"?>' + "\n"
+ output << '<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">' + "\n"
+ output << '<plist version="1.0">' + "\n"
+
+ output << contents
+
+ output << '</plist>' + "\n"
+
+ return output
+ end
+
+ def self.element_type(item)
+ case item
+ when String, Symbol
+ 'string'
+
+ when Fixnum, Bignum, Integer
+ 'integer'
+
+ when Float
+ 'real'
+
+ else
+ raise "Don't know about this data type... something must be wrong!"
+ end
+ end
+ private
+ class IndentedString #:nodoc:
+ attr_accessor :indent_string
+
+ def initialize(str = "\t")
+ @indent_string = str
+ @contents = ''
+ @indent_level = 0
+ end
+
+ def to_s
+ return @contents
+ end
+
+ def raise_indent
+ @indent_level += 1
+ end
+
+ def lower_indent
+ @indent_level -= 1 if @indent_level > 0
+ end
+
+ def <<(val)
+ if val.is_a? Array
+ val.each do |f|
+ self << f
+ end
+ else
+ # if it's already indented, don't bother indenting further
+ unless val =~ /\A#{@indent_string}/
+ indent = @indent_string * @indent_level
+
+ @contents << val.gsub(/^/, indent)
+ else
+ @contents << val
+ end
+
+ # it already has a newline, don't add another
+ @contents << "\n" unless val =~ /\n$/
+ end
+ end
+ end
+end
+
+# we need to add this so sorting hash keys works properly
+class Symbol #:nodoc:
+ def <=> (other)
+ self.to_s <=> other.to_s
+ end
+end
+
+class Array #:nodoc:
+ include Plist::Emit
+end
+
+class Hash #:nodoc:
+ include Plist::Emit
+end