3 # The Potlatch module provides helper functions for potlatch and its communication with the server
5 # The AMF class is a set of helper functions for encoding and decoding AMF.
7 # Return two-byte integer
9 s.getbyte * 256 + s.getbyte
12 # Return four-byte long
14 ((s.getbyte * 256 + s.getbyte) * 256 + s.getbyte) * 256 + s.getbyte
17 # Return string with two-byte length
19 len = s.getbyte * 256 + s.getbyte
21 str.force_encoding("UTF-8") if str.respond_to?("force_encoding")
25 # Return eight-byte double-precision float
27 a = s.read(8).unpack('G') # G big-endian, E little-endian
31 # Return numeric array
44 while (key = getstring(s))
45 if (key == '') then break end
46 arr[key] = getvalue(s)
48 s.getbyte # skip the 9 'end of object' value
55 when 0 then return getdouble(s) # number
56 when 1 then return s.getbyte # boolean
57 when 2 then return getstring(s) # string
58 when 3 then return getobject(s) # object/hash
59 when 5 then return nil # null
60 when 6 then return nil # undefined
61 when 8 then s.read(4) # mixedArray
62 return getobject(s) # |
63 when 10 then return getarray(s) # array
64 else; return nil # error
68 # Envelope data into AMF writeable form
69 def self.putdata(index, n)
70 d = encodestring(index + "/onResult")
71 d += encodestring("null")
77 # Pack variables as AMF
78 def self.encodevalue(n)
81 a = 10.chr + encodelong(n.length)
89 a += encodestring(k.to_s) + encodevalue(v)
91 a + 0.chr + 0.chr + 9.chr
93 2.chr + encodestring(n)
94 when 'Bignum', 'Fixnum', 'Float'
95 0.chr + encodedouble(n)
99 0.chr + encodedouble(1)
101 0.chr + encodedouble(0)
103 Rails.logger.error("Unexpected Ruby type for AMF conversion: " + n.class.to_s)
107 # Encode string with two-byte length
108 def self.encodestring(n)
109 n = n.dup.force_encoding("ASCII-8BIT") if n.respond_to?("force_encoding")
110 a, b = n.size.divmod(256)
114 # Encode number as eight-byte double precision float
115 def self.encodedouble(n)
119 # Encode number as four-byte long
120 def self.encodelong(n)
125 # The Dispatcher class handles decoding a series of RPC calls
126 # from the request, dispatching them, and encoding the response
128 def initialize(request, &_block)
129 # Get stream for request data
130 @request = StringIO.new(request + 0.chr)
132 # Skip version indicator and client ID
136 AMF.getint(@request).times do # Read number of headers and loop
137 AMF.getstring(@request) # | skip name
138 req.getbyte # | skip boolean
139 AMF.getvalue(@request) # | skip value
142 # Capture the dispatch routine
147 # Read number of message bodies
148 bodies = AMF.getint(@request)
150 # Output response header
151 a, b = bodies.divmod(256)
152 yield 0.chr + 0.chr + 0.chr + 0.chr + a.chr + b.chr
155 bodies.times do # Read each body
156 name = AMF.getstring(@request) # | get message name
157 index = AMF.getstring(@request) # | get index in response sequence
158 AMF.getlong(@request) # | get total size in bytes
159 args = AMF.getvalue(@request) # | get response (probably an array)
161 result = @dispatch.call(name, *args)
163 yield AMF.putdata(index, result)
168 # The Potlatch class is a helper for Potlatch
172 # does: reads tag preset menus, colours, and autocomplete config files
173 # out: [0] presets, [1] presetmenus, [2] presetnames,
174 # [3] colours, [4] casing, [5] areas, [6] autotags
177 Rails.logger.info(" Message: getpresets")
181 presetmenus = {}; presetmenus['point'] = []; presetmenus['way'] = []; presetmenus['POI'] = []
182 presetnames = {}; presetnames['point'] = {}; presetnames['way'] = {}; presetnames['POI'] = {}
185 # StringIO.open(txt) do |file|
186 File.open("#{Rails.root}/config/potlatch/presets.txt") do |file|
187 file.each_line do|line|
189 if t =~ /(\w+)\/(\w+)/
192 presetmenus[presettype].push(presetcategory)
193 presetnames[presettype][presetcategory] = ["(no preset)"]
194 elsif t =~ /^([\w\s]+):\s?(.+)$/
196 presetnames[presettype][presetcategory].push(pre)
198 kv.split(',').each do|a|
199 if a =~ /^(.+)=(.*)$/ then presets[pre][$1] = $2 end
205 # Read colours/styling
206 colours = {}; casing = {}; areas = {}
207 File.open("#{Rails.root}/config/potlatch/colours.txt") do |file|
208 file.each_line do|line|
210 if t =~ /(\w+)\s+([^\s]+)\s+([^\s]+)\s+([^\s]+)/
212 if ($2 != '-') then colours[tag] = $2.hex end
213 if ($3 != '-') then casing[tag] = $3.hex end
214 if ($4 != '-') then areas[tag] = $4.hex end
219 # Read relations colours/styling
220 relcolours = {}; relalphas = {}; relwidths = {}
221 File.open("#{Rails.root}/config/potlatch/relation_colours.txt") do |file|
222 file.each_line do|line|
224 if t =~ /(\w+)\s+([^\s]+)\s+([^\s]+)\s+([^\s]+)/
226 if ($2 != '-') then relcolours[tag] = $2.hex end
227 if ($3 != '-') then relalphas[tag] = $3.to_i end
228 if ($4 != '-') then relwidths[tag] = $4.to_i end
234 icon_list = []; icon_tags = {}
235 File.open("#{Rails.root}/config/potlatch/icon_presets.txt") do |file|
236 file.each_line do|line|
237 (icon, tags) = line.chomp.split("\t")
239 icon_tags[icon] = Hash[*tags.scan(/([^;=]+)=([^;=]+)/).flatten]
245 autotags = {}; autotags['point'] = {}; autotags['way'] = {}; autotags['POI'] = {}
246 File.open("#{Rails.root}/config/potlatch/autocomplete.txt") do |file|
247 file.each_line do|line|
249 if t =~ /^([\w:]+)\/(\w+)\s+(.+)$/
250 tag = $1; type = $2; values = $3
252 autotags[type][tag] = []
254 autotags[type][tag] = values.split(',').sort.reverse
260 [presets, presetmenus, presetnames, colours, casing, areas, autotags, relcolours, relalphas, relwidths, icon_list, {}, icon_tags]