Fri, 17 Dec 2010 22:54:34 +0500
usermanager: Fixed a possible traceback when is_admin() was used on a component.
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fallbacks/lxp.lua: CRLF -> LF.
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1 | |
3dbdcc79bd66
fallbacks/lxp.lua: CRLF -> LF.
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parents:
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2 | local coroutine = coroutine; |
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fallbacks/lxp.lua: CRLF -> LF.
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parents:
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3 | local tonumber = tonumber; |
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fallbacks/lxp.lua: CRLF -> LF.
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4 | local string = string; |
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fallbacks/lxp.lua: CRLF -> LF.
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5 | local setmetatable, getmetatable = setmetatable, getmetatable; |
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parents:
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6 | local pairs = pairs; |
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fallbacks/lxp.lua: CRLF -> LF.
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parents:
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7 | |
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fallbacks/lxp.lua: CRLF -> LF.
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8 | local deadroutine = coroutine.create(function() end); |
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fallbacks/lxp.lua: CRLF -> LF.
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parents:
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9 | coroutine.resume(deadroutine); |
3dbdcc79bd66
fallbacks/lxp.lua: CRLF -> LF.
Waqas Hussain <waqas20@gmail.com>
parents:
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10 | |
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fallbacks/lxp.lua: CRLF -> LF.
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11 | module("lxp") |
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fallbacks/lxp.lua: CRLF -> LF.
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parents:
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12 | |
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13 | local entity_map = setmetatable({ |
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14 | ["amp"] = "&"; |
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15 | ["gt"] = ">"; |
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16 | ["lt"] = "<"; |
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fallbacks/lxp.lua: CRLF -> LF.
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17 | ["apos"] = "'"; |
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fallbacks/lxp.lua: CRLF -> LF.
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18 | ["quot"] = "\""; |
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19 | }, {__index = function(_, s) |
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20 | if s:sub(1,1) == "#" then |
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21 | if s:sub(2,2) == "x" then |
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22 | return string.char(tonumber(s:sub(3), 16)); |
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23 | else |
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24 | return string.char(tonumber(s:sub(2))); |
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25 | end |
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26 | end |
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27 | end |
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28 | }); |
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29 | local function xml_unescape(str) |
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30 | return (str:gsub("&(.-);", entity_map)); |
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31 | end |
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32 | local function parse_tag(s) |
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33 | local name,sattr=(s):gmatch("([^%s]+)(.*)")(); |
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34 | local attr = {}; |
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35 | for a,b in (sattr):gmatch("([^=%s]+)=['\"]([^'\"]*)['\"]") do attr[a] = xml_unescape(b); end |
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36 | return name, attr; |
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37 | end |
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38 | |
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39 | local function parser(data, handlers, ns_separator) |
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40 | local function read_until(str) |
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41 | local pos = data:find(str, nil, true); |
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42 | while not pos do |
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43 | data = data..coroutine.yield(); |
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44 | pos = data:find(str, nil, true); |
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45 | end |
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46 | local r = data:sub(1, pos); |
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47 | data = data:sub(pos+1); |
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48 | return r; |
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49 | end |
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50 | local function read_before(str) |
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51 | local pos = data:find(str, nil, true); |
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52 | while not pos do |
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53 | data = data..coroutine.yield(); |
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54 | pos = data:find(str, nil, true); |
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55 | end |
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56 | local r = data:sub(1, pos-1); |
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57 | data = data:sub(pos); |
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58 | return r; |
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59 | end |
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60 | local function peek() |
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61 | while #data == 0 do data = coroutine.yield(); end |
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62 | return data:sub(1,1); |
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63 | end |
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64 | |
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65 | local ns = { xml = "http://www.w3.org/XML/1998/namespace" }; |
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66 | ns.__index = ns; |
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67 | local function apply_ns(name, dodefault) |
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68 | local prefix,n = name:match("^([^:]*):(.*)$"); |
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69 | if prefix and ns[prefix] then |
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70 | return ns[prefix]..ns_separator..n; |
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71 | end |
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72 | if dodefault and ns[""] then |
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73 | return ns[""]..ns_separator..name; |
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74 | end |
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75 | return name; |
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76 | end |
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77 | local function push(tag, attr) |
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78 | ns = setmetatable({}, ns); |
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79 | for k,v in pairs(attr) do |
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80 | local xmlns = k == "xmlns" and "" or k:match("^xmlns:(.*)$"); |
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81 | if xmlns then |
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82 | ns[xmlns] = v; |
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83 | attr[k] = nil; |
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84 | end |
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85 | end |
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86 | local newattr, n = {}, 0; |
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87 | for k,v in pairs(attr) do |
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88 | n = n+1; |
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89 | k = apply_ns(k); |
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90 | newattr[n] = k; |
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91 | newattr[k] = v; |
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92 | end |
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93 | tag = apply_ns(tag, true); |
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94 | ns[0] = tag; |
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95 | ns.__index = ns; |
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96 | return tag, newattr; |
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97 | end |
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98 | local function pop() |
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99 | local tag = ns[0]; |
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100 | ns = getmetatable(ns); |
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101 | return tag; |
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102 | end |
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103 | |
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104 | while true do |
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105 | if peek() == "<" then |
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106 | local elem = read_until(">"):sub(2,-2); |
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107 | if elem:sub(1,1) == "!" or elem:sub(1,1) == "?" then -- neglect comments and processing-instructions |
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108 | elseif elem:sub(1,1) == "/" then -- end tag |
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109 | elem = elem:sub(2); |
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110 | local name = pop(); |
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111 | handlers:EndElement(name); -- TODO check for start-end tag name match |
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112 | elseif elem:sub(-1,-1) == "/" then -- empty tag |
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113 | elem = elem:sub(1,-2); |
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114 | local name,attr = parse_tag(elem); |
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115 | name,attr = push(name,attr); |
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116 | handlers:StartElement(name,attr); |
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117 | name = pop(); |
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118 | handlers:EndElement(name); |
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119 | else -- start tag |
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120 | local name,attr = parse_tag(elem); |
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121 | name,attr = push(name,attr); |
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122 | handlers:StartElement(name,attr); |
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123 | end |
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124 | else |
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125 | local text = read_before("<"); |
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126 | handlers:CharacterData(xml_unescape(text)); |
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127 | end |
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128 | end |
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129 | end |
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130 | |
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131 | function new(handlers, ns_separator) |
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132 | local co = coroutine.create(parser); |
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133 | return { |
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134 | parse = function(self, data) |
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135 | if not data then |
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136 | co = deadroutine; |
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137 | return true; -- eof |
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138 | end |
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139 | local success, result = coroutine.resume(co, data, handlers, ns_separator); |
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140 | if result then |
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141 | co = deadroutine; |
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142 | return nil, result; -- error |
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143 | end |
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144 | return true; -- success |
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145 | end; |
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146 | }; |
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147 | end |
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148 | |
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149 | return _M; |