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annotate core/src/luan/cmd_line.luan @ 251:705d14f4d8ee

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start web testing git-svn-id: https://luan-java.googlecode.com/svn/trunk@252 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Sun, 19 Oct 2014 03:38:47 +0000
parents 27abb3746917
children f1f7d8c7e94e
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cf939124461a don't import modules by default
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1 import "String"
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2 import "Table"
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3 import "Io"
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4
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6 local standalone_usage = [=[
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7 usage: java luan.CmdLine [options] [script [args]]
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8 Available options are:
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9 -e stat execute string 'stat'
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10 -i enter interactive mode after executing 'script'
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11 -v show version information
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12 -- stop handling options
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13 - stop handling options and execute stdin
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14 ]=]
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15
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16 local function standalone_error(msg)
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17 Io.stderr.write( msg, "\n", standalone_usage )
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18 end
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19
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20
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21 local args = {...}
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22 local interactive = false
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23 local showVersion = false
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24 local i = 1
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25 if #args == 0 then
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26 interactive = true
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27 showVersion = true
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28 else
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29 while i <= #args do
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30 local arg = args[i]
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31 if arg.sub(1,1) ~= "-" or arg == "--" then
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32 break
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33 end
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34 if arg == "-i" then
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35 interactive = true
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36 elseif arg == "-v" then
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37 showVersion = true
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38 elseif arg == "-e" then
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39 i = i + 1
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40 if i == #args then
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41 standalone_error "'-e' needs argument"
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42 return
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43 end
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44 local cmd = args[i]
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45 local stat = load(cmd,"(command line)",true,true)
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46 local result = Table.pack( stat() )
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47 if result.n > 0 then
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48 print( Table.unpack(result,1,result.n) )
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49 end
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50 elseif arg == "-" then
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51 local src = Io.stdin.read_text()
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52 local stdin = load(src,"stdin")
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53 stdin()
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54 return
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55 else
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56 standalone_error( "unrecognized option '"..arg.."'" )
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57 return
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58 end
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59 i = i + 1
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60 end
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61 end
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62 if showVersion then print(_VERSION) end
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63 if i <= #args then
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64 local file = args[i]
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65 _G.arg = {}
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66 for j,v in ipairs(args) do
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67 _G.arg[j-i] = v
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68 end
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69 try
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70 local main_file = load_file(file)
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71 main_file( Table.unpack(_G.arg) )
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72 catch e do
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73 Io.print_to(Io.stderr, e )
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74 end
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75 end
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76 if interactive then
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77 Debug.debug("> ")
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78 end