+# The Potlatch module provides helper functions for potlatch and its communication with the server
+module Potlatch
+
+ # The AMF class is a set of helper functions for encoding and decoding AMF.
+ class AMF
+
+ # Return two-byte integer
+ def self.getint(s)
+ s.getc*256+s.getc
+ end
+
+ # Return four-byte long
+ def self.getlong(s)
+ ((s.getc*256+s.getc)*256+s.getc)*256+s.getc
+ end
+
+ # Return string with two-byte length
+ def self.getstring(s)
+ len=s.getc*256+s.getc
+ s.read(len)
+ end
+
+ # Return eight-byte double-precision float
+ def self.getdouble(s)
+ a=s.read(8).unpack('G') # G big-endian, E little-endian
+ a[0]
+ end
+
+ # Return numeric array
+ def self.getarray(s)
+ len=getlong(s)
+ arr=[]
+ for i in (0..len-1)
+ arr[i]=getvalue(s)
+ end
+ arr
+ end
+
+ # Return object/hash
+ def self.getobject(s)
+ arr={}
+ while (key=getstring(s))
+ if (key=='') then break end
+ arr[key]=getvalue(s)
+ end
+ s.getc # skip the 9 'end of object' value
+ arr
+ end
+
+ # Parse and get value
+ def self.getvalue(s)
+ case s.getc
+ when 0; return getdouble(s) # number
+ when 1; return s.getc # 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
+ end
+ end
+
+ # Envelope data into AMF writeable form
+ def self.putdata(index,n)
+ d =encodestring(index+"/onResult")
+ d+=encodestring("null")
+ d+=[-1].pack("N")
+ d+=encodevalue(n)
+ end
+
+ # Pack variables as AMF
+ def self.encodevalue(n)
+ case n.class.to_s
+ when 'Array'
+ a=10.chr+encodelong(n.length)
+ n.each do |b|
+ a+=encodevalue(b)
+ end
+ a
+ when 'Hash'
+ a=3.chr
+ n.each do |k,v|
+ a+=encodestring(k)+encodevalue(v)
+ end
+ a+0.chr+0.chr+9.chr
+ when 'String'
+ 2.chr+encodestring(n)
+ when 'Bignum','Fixnum','Float'
+ 0.chr+encodedouble(n)
+ when 'NilClass'
+ 5.chr
+ else
+ RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s)
+ end
+ end
+
+ # Encode string with two-byte length
+ def self.encodestring(n)
+ a,b=n.size.divmod(256)
+ a.chr+b.chr+n
+ end
+
+ # Encode number as eight-byte double precision float
+ def self.encodedouble(n)
+ [n].pack('G')
+ end
+
+ # Encode number as four-byte long
+ def self.encodelong(n)
+ [n].pack('N')
+ end
+
+ end
+
+
+ # The Potlatch class is a helper for Potlatch
+ class Potlatch
+
+ # ----- getpresets
+ # in: none
+ # does: reads tag preset menus, colours, and autocomplete config files
+ # out: [0] presets, [1] presetmenus, [2] presetnames,
+ # [3] colours, [4] casing, [5] areas, [6] autotags
+ # (all hashes)
+ def self.get_presets
+ RAILS_DEFAULT_LOGGER.info(" Message: getpresets")
+
+ # Read preset menus
+ presets={}
+ presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]; presetmenus['POI']=[]
+ presetnames={}; presetnames['point']={}; presetnames['way']={}; presetnames['POI']={}
+ presettype=''
+ presetcategory=''
+ # StringIO.open(txt) do |file|
+ File.open("#{RAILS_ROOT}/config/potlatch/presets.txt") do |file|
+ file.each_line {|line|
+ t=line.chomp
+ if (t=~/(\w+)\/(\w+)/) then
+ presettype=$1
+ presetcategory=$2
+ presetmenus[presettype].push(presetcategory)
+ presetnames[presettype][presetcategory]=["(no preset)"]
+ elsif (t=~/^(.+):\s?(.+)$/) then
+ pre=$1; kv=$2
+ presetnames[presettype][presetcategory].push(pre)
+ presets[pre]={}
+ kv.split(',').each {|a|
+ if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end
+ }
+ end
+ }
+ end
+
+ # Read colours/styling
+ colours={}; casing={}; areas={}
+ File.open("#{RAILS_ROOT}/config/potlatch/colours.txt") do |file|
+ file.each_line {|line|
+ t=line.chomp
+ if (t=~/(\w+)\s+([^\s]+)\s+([^\s]+)\s+([^\s]+)/) then
+ tag=$1
+ if ($2!='-') then colours[tag]=$2.hex end
+ if ($3!='-') then casing[tag]=$3.hex end
+ if ($4!='-') then areas[tag]=$4.hex end
+ end
+ }
+ end
+
+ # Read auto-complete
+ autotags={}; autotags['point']={}; autotags['way']={}; autotags['POI']={};
+ File.open("#{RAILS_ROOT}/config/potlatch/autocomplete.txt") do |file|
+ file.each_line {|line|
+ t=line.chomp
+ if (t=~/^(\w+)\/(\w+)\s+(.+)$/) then
+ tag=$1; type=$2; values=$3
+ if values=='-' then autotags[type][tag]=[]
+ else autotags[type][tag]=values.split(',').sort.reverse end
+ end
+ }
+ end
+
+ [presets,presetmenus,presetnames,colours,casing,areas,autotags]
+ end
+ end
+
+end
+
projects / rails.git / commitdiff