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jbe/bsw@0
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1 --[[--
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jbe@267
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2 url_string = -- a string containing an URL
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jbe/bsw@0
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3 encode.url{
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jbe@267
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4 external = external, -- external URL (instead of specifying base, module, etc. below)
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jbe@267
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5 base = base, -- optional string containing a base URL of a WebMCP application
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jbe@267
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6 static = static, -- an URL relative to the static file directory
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jbe@267
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7 module = module, -- a module name of the WebMCP application
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jbe@267
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8 view = view, -- a view name of the WebMCP application
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jbe@267
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9 action = action, -- an action name of the WebMCP application
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jbe@267
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10 id = id, -- optional id to be passed to the view or action to select a particular data record
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jbe@267
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11 params = params, -- optional parameters to be passed to the view or action
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jbe@267
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12 anchor = anchor -- anchor in URL
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jbe/bsw@0
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13 }
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jbe/bsw@0
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14
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jbe/bsw@0
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15 This function creates URLs to external locations, to static files within the WebMCP application or to a certain view or action inside a module.
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jbe/bsw@0
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16
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jbe/bsw@0
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17 --]]--
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jbe/bsw@0
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18
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jbe/bsw@0
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19 function encode.url(args)
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jbe/bsw@0
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20 local external = args.external
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jbe/bsw@0
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21 local base = args.base or request.get_relative_baseurl()
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jbe/bsw@0
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22 local static = args.static
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jbe/bsw@0
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23 local module = args.module
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jbe/bsw@0
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24 local view = args.view
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jbe/bsw@0
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25 local action = args.action
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jbe/bsw@0
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26 local id = args.id
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jbe/bsw@0
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27 local params = args.params or {}
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bsw@80
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28 local anchor = args.anchor
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jbe/bsw@0
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29 local result = {}
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jbe/bsw@0
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30 local id_as_param = false
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jbe/bsw@0
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31 local function add(...)
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jbe/bsw@0
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32 for i = 1, math.huge do
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jbe/bsw@0
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33 local v = select(i, ...)
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jbe/bsw@0
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34 if v == nil then break end
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jbe/bsw@0
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35 result[#result+1] = v
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jbe/bsw@0
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36 end
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jbe/bsw@0
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37 end
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jbe/bsw@0
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38 if external then
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jbe/bsw@0
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39 add(external)
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jbe/bsw@0
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40 else
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jbe/bsw@0
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41 add(base)
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jbe/bsw@0
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42 if not string.find(base, "/$") then
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jbe/bsw@0
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43 add("/")
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jbe/bsw@0
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44 end
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jbe/bsw@0
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45 if static then
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jbe/bsw@0
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46 add("static/")
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jbe/bsw@0
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47 add(static)
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jbe/bsw@0
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48 elseif module or view or action or id then
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jbe/bsw@0
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49 assert(module, "Module not specified.")
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jbe/bsw@0
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50 add(encode.url_part(module), "/")
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jbe/bsw@0
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51 if view and not action then
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jbe/bsw@0
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52 local view_base, view_suffix = string.match(
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jbe/bsw@0
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53 view,
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jbe/bsw@0
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54 "^([^.]*)(.*)$"
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jbe/bsw@0
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55 )
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jbe/bsw@0
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56 add(encode.url_part(view_base))
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jbe/bsw@0
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57 if args.id then
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jbe/bsw@0
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58 add("/", encode.url_part(id))
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jbe/bsw@0
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59 end
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jbe/bsw@0
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60 if view_suffix == "" then
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jbe/bsw@0
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61 add(".html")
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jbe/bsw@0
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62 else
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jbe/bsw@0
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63 add(view_suffix) -- view_suffix includes dot as first character
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jbe/bsw@0
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64 end
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jbe/bsw@0
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65 elseif action and not view then
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jbe/bsw@0
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66 add(encode.url_part(action))
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jbe/bsw@0
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67 id_as_param = true
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jbe/bsw@0
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68 elseif view and action then
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jbe/bsw@0
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69 error("Both a view and an action was specified.")
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jbe/bsw@0
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70 end
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jbe/bsw@0
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71 end
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jbe/bsw@0
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72 do
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jbe/bsw@0
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73 local new_params = request.get_perm_params()
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jbe/bsw@0
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74 for key, value in pairs(params) do
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jbe/bsw@0
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75 new_params[key] = value
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jbe/bsw@0
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76 end
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jbe/bsw@0
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77 params = new_params
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jbe/bsw@0
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78 end
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jbe/bsw@0
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79 end
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jbe/bsw@0
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80 if next(params) ~= nil or (id and id_as_param) then
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jbe@452
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81 if not (external and string.find(external, "%?")) then
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jbe@452
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82 add("?")
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jbe@453
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83 elseif external and not string.find(external, "&$") then
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jbe@452
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84 add("&")
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jbe@452
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85 end
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jbe/bsw@0
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86 if id and id_as_param then
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jbe/bsw@0
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87 add("_webmcp_id=", encode.url_part(id), "&")
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jbe/bsw@0
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88 end
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jbe/bsw@0
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89 for key, value in pairs(params) do
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jbe/bsw@11
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90 -- TODO: better way to detect arrays?
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jbe/bsw@11
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91 if string.match(key, "%[%]$") then
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jbe/bsw@11
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92 for idx, entry in ipairs(value) do
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jbe/bsw@11
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93 add(encode.url_part(key), "=", encode.url_part(entry), "&")
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jbe/bsw@11
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94 end
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jbe/bsw@11
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95 else
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jbe/bsw@11
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96 add(encode.url_part(key), "=", encode.url_part(value), "&")
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jbe/bsw@11
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97 end
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jbe/bsw@0
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98 end
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jbe/bsw@0
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99 result[#result] = nil -- remove last '&' or '?'
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jbe/bsw@0
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100 end
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jbe@79
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101 local string_result = table.concat(result)
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jbe@79
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102 if anchor ~= nil then
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jbe@79
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103 string_result = string.match(string_result, "^[^#]*")
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jbe@79
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104 if anchor then
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bsw@80
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105 string_result = string_result .. "#" .. encode.url_part(anchor)
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jbe@79
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106 end
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jbe@79
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107 end
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jbe@79
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108 return string_result
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jbe/bsw@0
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109 end
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