Mercurial > luasocket

annotate etc/dict.lua @ 1:cf0892e34f45

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Resyncing with Git repo
author Eric Wing <ewing . public |-at-| gmail . com>
date Wed, 27 Aug 2008 22:44:22 -0700
parents 4b915342e2a8
children
rev   line source
0
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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1 -----------------------------------------------------------------------------
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2 -- Little program to download DICT word definitions
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3 -- LuaSocket sample files
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4 -- Author: Diego Nehab
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5 -- RCS ID: $Id: dict.lua,v 1.22 2005/11/22 08:33:29 diego Exp $
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6 -----------------------------------------------------------------------------
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7
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8 -----------------------------------------------------------------------------
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9 -- Load required modules
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10 -----------------------------------------------------------------------------
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11 local base = _G
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12 local string = require("string")
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13 local table = require("table")
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14 local socket = require("socket")
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15 local url = require("socket.url")
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16 local tp = require("socket.tp")
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17 module("socket.dict")
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18
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19 -----------------------------------------------------------------------------
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20 -- Globals
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21 -----------------------------------------------------------------------------
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22 HOST = "dict.org"
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23 PORT = 2628
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24 TIMEOUT = 10
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25
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26 -----------------------------------------------------------------------------
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27 -- Low-level dict API
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28 -----------------------------------------------------------------------------
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29 local metat = { __index = {} }
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30
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31 function open(host, port)
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32 local tp = socket.try(tp.connect(host or HOST, port or PORT, TIMEOUT))
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33 return base.setmetatable({tp = tp}, metat)
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34 end
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35
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36 function metat.__index:greet()
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37 return socket.try(self.tp:check(220))
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38 end
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39
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40 function metat.__index:check(ok)
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41 local code, status = socket.try(self.tp:check(ok))
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42 return code,
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43 base.tonumber(socket.skip(2, string.find(status, "^%d%d%d (%d*)")))
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44 end
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45
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46 function metat.__index:getdef()
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47 local line = socket.try(self.tp:receive())
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48 local def = {}
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49 while line ~= "." do
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50 table.insert(def, line)
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51 line = socket.try(self.tp:receive())
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52 end
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53 return table.concat(def, "\n")
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54 end
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55
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56 function metat.__index:define(database, word)
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57 database = database or "!"
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58 socket.try(self.tp:command("DEFINE", database .. " " .. word))
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59 local code, count = self:check(150)
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60 local defs = {}
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61 for i = 1, count do
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62 self:check(151)
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63 table.insert(defs, self:getdef())
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64 end
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65 self:check(250)
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66 return defs
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67 end
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68
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69 function metat.__index:match(database, strat, word)
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70 database = database or "!"
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71 strat = strat or "."
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72 socket.try(self.tp:command("MATCH", database .." ".. strat .." ".. word))
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73 self:check(152)
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74 local mat = {}
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75 local line = socket.try(self.tp:receive())
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76 while line ~= '.' do
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77 database, word = socket.skip(2, string.find(line, "(%S+) (.*)"))
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78 if not mat[database] then mat[database] = {} end
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79 table.insert(mat[database], word)
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80 line = socket.try(self.tp:receive())
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81 end
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82 self:check(250)
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83 return mat
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84 end
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85
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86 function metat.__index:quit()
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87 self.tp:command("QUIT")
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88 return self:check(221)
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89 end
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90
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91 function metat.__index:close()
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92 return self.tp:close()
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93 end
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94
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95 -----------------------------------------------------------------------------
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96 -- High-level dict API
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97 -----------------------------------------------------------------------------
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98 local default = {
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99 scheme = "dict",
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100 host = "dict.org"
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101 }
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102
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103 local function there(f)
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104 if f == "" then return nil
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105 else return f end
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106 end
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107
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108 local function parse(u)
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109 local t = socket.try(url.parse(u, default))
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110 socket.try(t.scheme == "dict", "invalid scheme '" .. t.scheme .. "'")
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111 socket.try(t.path, "invalid path in url")
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112 local cmd, arg = socket.skip(2, string.find(t.path, "^/(.)(.*)$"))
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113 socket.try(cmd == "d" or cmd == "m", "<command> should be 'm' or 'd'")
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114 socket.try(arg and arg ~= "", "need at least <word> in URL")
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115 t.command, t.argument = cmd, arg
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116 arg = string.gsub(arg, "^:([^:]+)", function(f) t.word = f end)
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117 socket.try(t.word, "need at least <word> in URL")
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118 arg = string.gsub(arg, "^:([^:]*)", function(f) t.database = there(f) end)
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119 if cmd == "m" then
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120 arg = string.gsub(arg, "^:([^:]*)", function(f) t.strat = there(f) end)
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121 end
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122 string.gsub(arg, ":([^:]*)$", function(f) t.n = base.tonumber(f) end)
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123 return t
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124 end
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125
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126 local function tget(gett)
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127 local con = open(gett.host, gett.port)
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128 con:greet()
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129 if gett.command == "d" then
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130 local def = con:define(gett.database, gett.word)
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131 con:quit()
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132 con:close()
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133 if gett.n then return def[gett.n]
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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134 else return def end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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135 elseif gett.command == "m" then
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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136 local mat = con:match(gett.database, gett.strat, gett.word)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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137 con:quit()
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138 con:close()
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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139 return mat
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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140 else return nil, "invalid command" end
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141 end
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142
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143 local function sget(u)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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144 local gett = parse(u)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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145 return tget(gett)
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146 end
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147
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148 get = socket.protect(function(gett)
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149 if base.type(gett) == "string" then return sget(gett)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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150 else return tget(gett) end
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151 end)
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152