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annotate core/src/luan/modules/Io.luan @ 706:30c87c859277

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add Io.zip
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 17 May 2016 19:00:25 -0600
parents d0280c7fdc3a
children 2486fa6490c6
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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 M = {}
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6
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7 M.ip = IoLuan.ip
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8 M.read_console_line = IoLuan.read_console_line
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9 M.schemes = IoLuan.newSchemes()
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10 M.uri = IoLuan.uri
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11 M.zip = IoLuan.zip
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12 M.stdin = IoLuan.defaultStdin.table()
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13 M.socket_server = IoLuan.socket_server
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14 M.stdout = IoLuan.textWriter(System.out)
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15 M.stderr = IoLuan.textWriter(System.err)
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17
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18 local Luan = require "luan:Luan.luan"
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19 local error = Luan.error
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20 local to_string = Luan.to_string or error()
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21 local type = Luan.type or error()
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22 local try = Luan.try or error()
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23 local ipairs = Luan.ipairs or error()
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24 local pairs = Luan.pairs or error()
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25 local values = Luan.values or error()
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26 local load = Luan.load or error()
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27 local Table = require "luan:Table.luan"
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28 local unpack = Table.unpack or error()
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29 local String = require "luan:String.luan"
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30 local encode = String.encode or error()
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31 local matches = String.matches or error()
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32
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33
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34 -- do not change
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35 function M.template_write(...)
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36 return M.stdout.write(...)
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37 end
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38
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39
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40 function M.print_to(out,...)
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41 local list = {}
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42 for v in values(...) do
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43 list[#list+1] = to_string(v)
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44 list[#list+1] = '\t'
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45 end
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46 if #list > 0 then
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47 list[#list] = '\n'
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48 out.write( unpack(list) )
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49 end
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50 end
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51
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52 function M.print(...)
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53 M.print_to(M.stdout,...)
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54 end
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56
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57 function M.output_to(out,fn,...)
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58 local old_out = M.stdout
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59 return try( {
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60 function(...)
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61 M.stdout = out
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62 fn(...)
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63 end;
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64 finally = function()
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65 M.stdout = old_out
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66 end;
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67 }, ... )
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68 end
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69
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70 local uri = M.uri -- make local
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71
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72 function M.output_of(fn,...)
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73 local string_uri = uri "string:"
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74 local out = string_uri.text_writer()
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75 M.output_to(out,fn,...)
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76 out.close()
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77 return string_uri.read_text()
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78 end
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79
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80
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81 -- repr
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82
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83 local function do_repr(out,obj,strict,done)
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84 local tp = type(obj)
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85 if tp == "table" then
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86 if done[obj] == true then
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87 strict and error "circular reference"
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88 out.write "<circular reference>"
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89 return
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90 end
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91 done[obj] = true
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92 out.write( "{" )
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93 local is_first = true
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94 local in_list = {}
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95 for key, value in ipairs(obj) do
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96 if is_first then is_first = false else out.write ", " end
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97 do_repr(out,value,strict,done)
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98 in_list[key] = true
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99 end
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100 for key, value in pairs(obj) do
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101 if in_list[key] ~= true then
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102 if is_first then is_first = false else out.write ", " end
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103 if type(key) == "string" and matches(key,"^[a-zA-Z_][a-zA-Z_0-9]*$") ~= nil then
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104 out.write( key )
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105 elseif type(key) == "table" then
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106 out.write( "[<", key, ">]" )
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107 else
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108 out.write "["
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109 do_repr(out,key,strict,done)
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110 out.write "]"
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111 end
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112 out.write "="
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113 do_repr(out,value,strict,done)
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114 end
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115 end
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116 out.write "}"
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117 elseif tp == "string" then
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118 out.write( '"', encode(obj), '"' )
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119 elseif tp == "nil" or tp == "boolean" or tp == "number" then
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120 out.write( obj )
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121 else
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122 strict and error("can't repr type '"..tp.."' of "..obj)
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123 out.write( "<", obj, ">" )
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124 end
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125 end
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126
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127 function M.repr(obj,strict)
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128 local string_uri = uri "string:"
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129 local out = string_uri.text_writer()
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130 do_repr(out,obj,strict or false,{})
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131 out.close()
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132 return string_uri.read_text()
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133 end
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134
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135
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136 -- useful for SimplyHTML responsiveness
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137
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138 local NO = {}
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139 M.NO = NO
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140
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141 function M.dont_write_when_no(write_fn)
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142 return function(...)
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143 for v in values(...) do
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144 if v == NO then
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145 return
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146 end
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147 end
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148 write_fn(...)
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149 end
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150 end
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151
554
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152
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153 -- debug
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154
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155 function M.debug(prompt)
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156 prompt = prompt or "luan_debug> "
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157 local function console()
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158 return M.read_console_line(prompt)
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159 end
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160 local env = {}
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161 for line in console do
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162 try {
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163 function()
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164 local fn
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165 try {
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166 function()
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167 fn = load("return "..line,"stdin",env)
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168 end
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169 catch = function(e)
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170 fn = load(line,"stdin",env)
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171 end
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172 }
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173 M.print( fn() )
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174 end
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175 catch = function(e)
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176 M.print(e)
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177 end
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178 }
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179 end
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180 end
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181
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182
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183 return M