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annotate src/luan/modules/http/tools/Run.luan @ 1520:d9a5405a3102

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try statement
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 21 Jun 2020 18:14:13 -0600
parents 9eba6bf0163b
children fa066aaa068c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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ca169567ce07 module URIs must now include ".luan"
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3 local load = Luan.load or error()
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4 local Io = require "luan:Io.luan"
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5 local print = Io.print or error()
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6 local String = require "luan:String.luan"
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7 local gmatch = String.gmatch or error()
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8 local Http = require "luan:http/Http.luan"
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9
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10
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11 local Run = {}
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12
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13 local function lines(s)
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14 local matcher = gmatch(s,"([^\n]*)\n|([^\n]+)$")
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15 return function()
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16 local m1, m2 = matcher()
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17 return m1 or m2
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18 end
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19 end
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06159094b802 replace WebRun.java with web_run.luan
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21 local function print_with_line_numbers(s)
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22 local i = 1
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23 for line in lines(s) do
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24 print(i,line)
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25 i = i + 1
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26 end
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27 end
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28
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29 local function form() %>
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30 <!doctype html>
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31 <html>
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32 <head>
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33 <title>Run Luan Code</title>
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34 <style>
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35 body {
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36 font-family: sans-serif;
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37 text-align: center;
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38 }
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39 textarea {
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40 font: inherit;
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41 }
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42 input[type="submit"] {
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43 margin-top: .3em;
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44 color: white;
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45 background: #337ab7;
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46 border-color: #337ab7;
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47 font: inherit;
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48 padding: .5em;
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49 border-radius: 4px;
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50 cursor: pointer;
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51 }
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52 </style>
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53 </head>
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54 <body>
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55 <h2>Run Luan Code</h2>
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56 <form method="post">
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57 <input type="hidden" name="content_type" value="text/plain; charset=utf-8" />
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58 <div>
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59 <textarea name="code" rows="20" cols="90" autofocus></textarea>
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60 </div>
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61 <div>
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62 <input type="submit" value="Execute Luan Code"/>
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63 </div>
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64 </form>
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65 </body>
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66 </html>
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67 <% end
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68
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69 function Run.run(code,source_name)
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70 try
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71 local run = load(code,source_name)
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72 run()
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73 return true
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74 catch e
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75 Http.response.reset()
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76 Http.response.headers["content-type"] = "text/plain; charset=utf-8"
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77 Io.stdout = Http.response.text_writer()
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78 print(e)
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79 print()
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80 print()
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81 print_with_line_numbers(code)
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82 return false
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83 end
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84 end
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85
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86 function Run.respond()
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87 local content_type = Http.request.parameters.content_type
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88 if content_type ~= nil then
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89 Http.response.headers["content-type"] = content_type
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90 end
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91 Io.stdout = Http.response.text_writer()
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92 local code = Http.request.parameters.code
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93 if code == nil then
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94 form()
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95 return
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96 end
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97 Run.run(code,"<web_run>")
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98 end
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99
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100 return Run