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annotate src/luan/modules/Io.luan @ 1277:5ba660381bd5

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fix Io.print()
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 11 Dec 2018 03:38:43 -0700
parents 623dfe0e2e73
children 781ec0a92bb5
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1 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
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5 local Io = {}
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6
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7 Io.ip = IoLuan.ip
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8 Io.my_ips = IoLuan.my_ips
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9 Io.read_console_line = IoLuan.read_console_line
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10 Io.schemes = IoLuan.newSchemes()
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11 Io.uri = IoLuan.uri
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12 Io.stdin = IoLuan.defaultStdin.table()
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13 --Io.socket_server = IoLuan.socket_server
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14 Io.stdout = IoLuan.textWriter(System.out)
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15 Io.stderr = IoLuan.textWriter(System.err)
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16 Io.unrestricted = IoLuan.unrestricted
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17
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18 -- used by http and rpc
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19 Io.password = "password"
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20
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21 local Luan = require "luan:Luan.luan"
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22 local error = Luan.error
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23 local to_string = Luan.to_string or error()
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24 local type = Luan.type or error()
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25 local try = Luan.try or error()
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26 local ipairs = Luan.ipairs or error()
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27 local pairs = Luan.pairs or error()
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28 local values = Luan.values or error()
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29 local load = Luan.load or error()
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30 local Table = require "luan:Table.luan"
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31 local pack = Table.pack or error()
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32 local unpack = Table.unpack or error()
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33 local String = require "luan:String.luan"
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34 local encode = String.encode or error()
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35 local matches = String.matches or error()
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36
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37
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38 -- do not change
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39 function Io.template_write(...)
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40 return Io.stdout.write(...)
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41 end
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42
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43
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44 function Io.print_to(out,...)
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45 local list = {}
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46 for _, v in values(...) do
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47 list[#list+1] = to_string(v)
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48 list[#list+1] = '\t'
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49 end
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50 if #list > 0 then
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51 list[#list] = '\n'
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52 out.write( unpack(list) )
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53 else
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54 out.write('\n')
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55 end
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56 end
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57
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58 function Io.print(...)
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59 Io.print_to(Io.stdout,...)
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60 end
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61
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62
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63 function Io.output_to(out,fn,...)
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64 local old_out = Io.stdout
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65 return try( {
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66 function(...)
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67 Io.stdout = out
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68 fn(...)
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69 end;
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70 finally = function()
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71 Io.stdout = old_out
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72 end;
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73 }, ... )
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74 end
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75
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76 local uri = Io.uri -- make local
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77
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78 function Io.output_of(fn,...)
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79 local string_uri = uri "string:"
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80 local out = string_uri.text_writer()
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81 Io.output_to(out,fn,...)
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82 out.close()
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83 return string_uri.read_text()
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84 end
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85
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86
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87 -- debug
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88
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89 function Io.debug(prompt)
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90 prompt = prompt or "luan_debug> "
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91 local function console()
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92 return Io.read_console_line(prompt)
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93 end
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94 local env = {}
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95 for line in console do
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96 try {
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97 function()
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98 local fn
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99 try {
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100 function()
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101 fn = load("return "..line,"stdin",env)
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102 end
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103 catch = function(e)
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104 fn = load(line,"stdin",env)
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105 end
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106 }
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107 local rtn = pack( fn() )
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108 if rtn.n > 0 then
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109 Io.print( unpack(rtn) )
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110 end
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111 end
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112 catch = function(e)
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113 Io.print(e)
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114 end
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115 }
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116 end
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117 end
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118
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119
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120 return Io