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annotate src/luan/modules/Io.luan @ 1444:b765f146f4dc

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add dns_lookup
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 05 Feb 2020 08:16:15 -0700
parents 8d95711f6615
children d9a5405a3102
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1 require "java"
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2 local IoLuan = require "java:luan.modules.IoLuan"
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3 local System = require "java:java.lang.System"
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4 local Boot = require "luan:Boot.luan"
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5
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6
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7 local Io = {}
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8
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9 Io.dns_lookup = IoLuan.dns_lookup
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10 Io.ip = IoLuan.ip
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11 Io.my_ips = IoLuan.my_ips
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12 Io.read_console_line = IoLuan.read_console_line
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13 Io.schemes = Boot.schemes
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14 Io.uri = Boot.uri
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15 Io.stdin = Boot.new_LuanIn( IoLuan.defaultStdin )
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16 Io.stdout = Boot.text_writer(System.out)
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17 Io.stderr = Boot.text_writer(System.err)
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18
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19 -- used by http and rpc
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20 Io.password = "password"
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21
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22 local Luan = require "luan:Luan.luan"
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23 local error = Luan.error
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24 local to_string = Luan.to_string or error()
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25 local type = Luan.type or error()
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26 local try = Luan.try or error()
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27 local ipairs = Luan.ipairs or error()
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28 local pairs = Luan.pairs or error()
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29 local values = Luan.values or error()
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30 local load = Luan.load or error()
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31 local Table = require "luan:Table.luan"
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32 local pack = Table.pack or error()
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33 local unpack = Table.unpack or error()
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34 local String = require "luan:String.luan"
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35 local encode = String.encode or error()
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36 local matches = String.matches or error()
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37
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38
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39 -- do not change
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40 function Io.template_write(...)
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41 return Io.stdout.write(...)
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42 end
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43
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44
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45 function Io.print_to(out,...)
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46 local list = {}
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47 for _, v in values(...) do
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48 list[#list+1] = to_string(v)
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49 list[#list+1] = '\t'
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50 end
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51 if #list > 0 then
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52 list[#list] = '\n'
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53 out.write( unpack(list) )
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54 else
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55 out.write('\n')
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56 end
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57 end
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58
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59 function Io.print(...)
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60 Io.print_to(Io.stdout,...)
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61 end
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63
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64 function Io.output_to(out,fn)
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65 local old_out = Io.stdout
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66 return try {
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67 function()
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68 Io.stdout = out
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69 return fn()
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70 end
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71 finally = function()
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72 Io.stdout = old_out
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73 end
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74 }
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75 end
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76
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77 local uri = Io.uri -- make local
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78
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79 function Io.output_of(fn)
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80 local string_uri = uri "string:"
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81 local out = string_uri.text_writer()
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82 Io.output_to(out,fn)
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83 out.close()
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84 return string_uri.read_text()
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85 end
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86
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87
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88 -- debug
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89
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90 function Io.debug(prompt)
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91 prompt = prompt or "luan_debug> "
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92 local function console()
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93 return Io.read_console_line(prompt)
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94 end
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95 local env = {}
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96 for line in console do
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97 try {
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98 function()
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99 local fn
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100 try {
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101 function()
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102 fn = load("return "..line,"stdin",env)
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103 end
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104 catch = function(e)
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105 fn = load(line,"stdin",env)
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106 end
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107 }
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108 local rtn = pack( fn() )
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109 if rtn.n > 0 then
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110 Io.print( unpack(rtn) )
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111 end
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112 end
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113 catch = function(e)
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114 Io.print(e)
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115 end
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116 }
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117 end
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118 end
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119
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120
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121 return Io