Checkout of Instiki Trunk 1/21/2007.

vendor/plugins/rubyzip-0.9.1/lib/zip/stdrubyext.rb

@@ -0,0 +1,111 @@
+unless Enumerable.method_defined?(:inject)
+  module Enumerable  #:nodoc:all
+    def inject(n = 0)
+      each { |value| n = yield(n, value) }
+      n
+    end
+  end
+end
+
+module Enumerable #:nodoc:all
+  # returns a new array of all the return values not equal to nil
+  # This implementation could be faster
+  def select_map(&aProc)
+    map(&aProc).reject { |e| e.nil? }
+  end
+end
+
+unless Object.method_defined?(:object_id)
+  class Object  #:nodoc:all
+    # Using object_id which is the new thing, so we need
+    # to make that work in versions prior to 1.8.0
+    alias object_id id
+  end
+end
+
+unless File.respond_to?(:read)
+  class File # :nodoc:all
+    # singleton method read does not exist in 1.6.x
+    def self.read(fileName)
+      open(fileName) { |f| f.read }
+    end
+  end
+end
+
+class String  #:nodoc:all
+  def starts_with(aString)
+    rindex(aString, 0) == 0
+  end
+
+  def ends_with(aString)
+    index(aString, -aString.size)
+  end
+
+  def ensure_end(aString)
+    ends_with(aString) ? self : self + aString
+  end
+
+  def lchop
+    slice(1, length)
+  end
+end
+
+class Time  #:nodoc:all
+  
+  #MS-DOS File Date and Time format as used in Interrupt 21H Function 57H:
+  # 
+  # Register CX, the Time:
+  # Bits 0-4  2 second increments (0-29)
+  # Bits 5-10 minutes (0-59)
+  # bits 11-15 hours (0-24)
+  # 
+  # Register DX, the Date:
+  # Bits 0-4 day (1-31)
+  # bits 5-8 month (1-12)
+  # bits 9-15 year (four digit year minus 1980)
+  
+  
+  def to_binary_dos_time
+    (sec/2) +
+      (min  << 5) +
+      (hour << 11)
+  end
+
+  def to_binary_dos_date
+    (day) +
+      (month << 5) +
+      ((year - 1980) << 9)
+  end
+
+  # Dos time is only stored with two seconds accuracy
+  def dos_equals(other)
+    to_i/2 == other.to_i/2
+  end
+
+  def self.parse_binary_dos_format(binaryDosDate, binaryDosTime)
+    second = 2 * (       0b11111 & binaryDosTime)
+    minute = (     0b11111100000 & binaryDosTime) >> 5 
+    hour   = (0b1111100000000000 & binaryDosTime) >> 11
+    day    = (           0b11111 & binaryDosDate) 
+    month  = (       0b111100000 & binaryDosDate) >> 5
+    year   = ((0b1111111000000000 & binaryDosDate) >> 9) + 1980
+    begin
+      return Time.local(year, month, day, hour, minute, second)
+    end
+  end
+end
+
+class Module  #:nodoc:all
+  def forward_message(forwarder, *messagesToForward)
+    methodDefs = messagesToForward.map { 
+      |msg| 
+      "def #{msg}; #{forwarder}(:#{msg}); end"
+    }
+    module_eval(methodDefs.join("\n"))
+  end
+end
+
+
+# Copyright (C) 2002, 2003 Thomas Sondergaard
+# rubyzip is free software; you can redistribute it and/or
+# modify it under the terms of the ruby license.