X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/e1213a4651e72beb660dddcf467d353744e3f336..434e603cd6ab73ac37b2919c89c09bfbf6e8fe62:/lib/potlatch.rb

diff --git a/lib/potlatch.rb b/lib/potlatch.rb
index ef3be79a8..919eb0122 100644
--- a/lib/potlatch.rb
+++ b/lib/potlatch.rb
@@ -1,3 +1,5 @@
+require 'stringio'
+
 # The Potlatch module provides helper functions for potlatch and its communication with the server
 module Potlatch
 
@@ -6,18 +8,20 @@ module Potlatch
     
     # Return two-byte integer
     def self.getint(s) 
-      s.getc*256+s.getc
+      s.getbyte*256+s.getbyte
     end
 
     # Return four-byte long
     def self.getlong(s) 
-      ((s.getc*256+s.getc)*256+s.getc)*256+s.getc
+      ((s.getbyte*256+s.getbyte)*256+s.getbyte)*256+s.getbyte
     end
 
     # Return string with two-byte length 
     def self.getstring(s) 
-      len=s.getc*256+s.getc
-      s.read(len)
+      len=s.getbyte*256+s.getbyte
+      str=s.read(len)
+      str.force_encoding("UTF-8") if str.respond_to?("force_encoding")
+      str
     end
 
     # Return eight-byte double-precision float 
@@ -43,23 +47,23 @@ module Potlatch
         if (key=='') then break end
         arr[key]=getvalue(s)
       end
-      s.getc		# skip the 9 'end of object' value
+      s.getbyte		# skip the 9 'end of object' value
       arr
     end
 
     # Parse and get value
     def self.getvalue(s) 
-      case s.getc
+      case s.getbyte
       when 0;	return getdouble(s)			# number
-      when 1;	return s.getc				# boolean
+      when 1;	return s.getbyte			# boolean
       when 2;	return getstring(s)			# string
       when 3;	return getobject(s)			# object/hash
-      when 5;	return nil					# null
-      when 6;	return nil					# undefined
-      when 8;	s.read(4)					# mixedArray
-        return getobject(s)			#  |
-      when 10;return getarray(s)			# array
-      else;	return nil					# error
+      when 5;	return nil				# null
+      when 6;	return nil				# undefined
+      when 8;	s.read(4)				# mixedArray
+                return getobject(s)			#  |
+      when 10;  return getarray(s)			# array
+      else;	return nil				# error
       end
     end
 
@@ -119,6 +123,48 @@ module Potlatch
 
   end
 
+  # The Dispatcher class handles decoding a series of RPC calls
+  # from the request, dispatching them, and encoding the response
+  class Dispatcher
+    def initialize(request, &block)
+      # Get stream for request data
+      @request = StringIO.new(request + 0.chr)
+
+      # Skip version indicator and client ID
+      @request.read(2)
+
+      # Skip headers
+      AMF.getint(@request).times do     # Read number of headers and loop
+        AMF.getstring(@request)         #  | skip name
+        req.getbyte                     #  | skip boolean
+        AMF.getvalue(@request)          #  | skip value
+      end
+
+      # Capture the dispatch routine
+      @dispatch = Proc.new
+    end
+
+    def each(&block)
+      # Read number of message bodies
+      bodies = AMF.getint(@request)
+
+      # Output response header
+      a,b = bodies.divmod(256)
+      yield 0.chr + 0.chr + 0.chr + 0.chr + a.chr + b.chr
+
+      # Process the bodies
+      bodies.times do                     # Read each body
+        name = AMF.getstring(@request)    #  | get message name
+        index = AMF.getstring(@request)   #  | get index in response sequence
+        bytes = AMF.getlong(@request)     #  | get total size in bytes
+        args = AMF.getvalue(@request)     #  | get response (probably an array)
+
+        result = @dispatch.call(name, *args)
+
+        yield AMF.putdata(index, result)
+      end
+    end
+  end
 
   # The Potlatch class is a helper for Potlatch
   class Potlatch