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annotate web/src/luan/modules/web/web_run.luan @ 326:db37d6aee4db

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remove try-catch statement; add Luan.try() and Luan.pcall(); git-svn-id: https://luan-java.googlecode.com/svn/trunk@327 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 19 Mar 2015 00:01:57 +0000
parents 78a6a71afbfd
children fb18724521d2
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7f7708e8fdd4 remove import statement
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 local Luan = require "luan:Luan"
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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2 local load = Luan.load
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3 local try = Luan.try
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4 local Io = require "luan:Io"
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5 local print = Io.print
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6 local Http = require "luan:web/Http"
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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7 local String = require "luan:String"
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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8 local Html = require "luan:Html"
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9
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10 local function lines(s)
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11 local matcher = s.gmatch "([^\n]*)\n|([^\n])+$"
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12 return function()
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13 local m1, m2 = matcher()
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14 return m1 or m2
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15 end
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16 end
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17
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18 local function print_with_line_numbers(s)
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19 i = 1
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20 for line in lines(s) do
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21 print(i,line)
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22 i = i + 1
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23 end
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24 end
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25
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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26 local function form()
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27 Html.simple_html_page{
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28 head = function() %>
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29 <title>Run Luan Code</title>
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30 <% end;
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31 body = function() %>
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32 <center margin-top=10>
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33 <h3>Run Luan Code</h3>
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34 </center>
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35 <form name="form0" method="post">
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36 <input type="hidden" name="content_type" value="text/plain" />
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37 <center>
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38 <textarea name="code" rows="20" cols="90" wrap="off" autofocus></textarea>
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39 </center>
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40 <center margin-top=5>
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41 <input type="submit" value="Execute Luan Code" textcolor="white" bgcolor="#337ab7"/>
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42 </center>
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43 </form>
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44 <% end;
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45 }
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46 end
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47
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48 function service()
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49 Io.stdout = Http.response.text_writer()
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50 local code = Http.request.parameters.code
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51 if code == nil then
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52 form()
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53 return
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54 end
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55 local content_type = Http.request.parameters.content_type
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56 if content_type ~= nil then
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57 Http.response.content_type = content_type
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58 end
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59 local env = {
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60 request = Http.request;
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61 response = Http.response;
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62 }
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63 try {
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64 function()
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65 local run = load(code,"<web_run>",env)
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66 run()
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67 end;
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68 catch = function(e)
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69 Http.response.content_type = "text/plain"
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70 print(e)
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71 print()
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72 print()
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73 print_with_line_numbers(code)
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74 end;
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75 }
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76 end