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comparison src/luan/lib/init.luan @ 133:98aba462c422
add tools/cmd_line.luan
git-svn-id: https://luan-java.googlecode.com/svn/trunk@134 21e917c8-12df-6dd8-5cb6-c86387c605b9
| author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
|---|---|
| date | Wed, 11 Jun 2014 05:20:19 +0000 |
| parents | f0a4abe58593 |
| children | 3b384dc5ca91 |
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| 132:14281d5bd36f | 133:98aba462c422 |
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| 36 catch e do | 36 catch e do |
| 37 print(e) | 37 print(e) |
| 38 end | 38 end |
| 39 end | 39 end |
| 40 end | 40 end |
| 41 | |
| 42 | |
| 43 local standalone_usage = [=[ | |
| 44 usage: java luan.CmdLine [options] [script [args]] | |
| 45 Available options are: | |
| 46 -e stat execute string 'stat' | |
| 47 -i enter interactive mode after executing 'script' | |
| 48 -v show version information | |
| 49 -- stop handling options | |
| 50 - stop handling options and execute stdin | |
| 51 ]=] | |
| 52 | |
| 53 local function standalone_error(msg) | |
| 54 Io.stderr.write( msg, "\n", standalone_usage ) | |
| 55 end | |
| 56 | |
| 57 function Basic.standalone(...) | |
| 58 local args = {...} | |
| 59 local interactive = false | |
| 60 local showVersion = false | |
| 61 local i = 1 | |
| 62 if #args == 0 then | |
| 63 interactive = true | |
| 64 showVersion = true | |
| 65 else | |
| 66 while i <= #args do | |
| 67 local arg = args[i] | |
| 68 if arg.sub(1,1) ~= "-" or arg == "--" then | |
| 69 break | |
| 70 end | |
| 71 if arg == "-i" then | |
| 72 interactive = true | |
| 73 elseif arg == "-v" then | |
| 74 showVersion = true | |
| 75 elseif arg == "-e" then | |
| 76 i = i + 1 | |
| 77 if i == #args then | |
| 78 standalone_error "'-e' needs argument" | |
| 79 return | |
| 80 end | |
| 81 local cmd = args[i] | |
| 82 local fn = load(cmd,"(command line)",true,true) | |
| 83 local result = Table.pack( fn() ) | |
| 84 if result.n > 0 then | |
| 85 print( Table.unpack(result,1,result.n) ) | |
| 86 end | |
| 87 elseif arg == "-" then | |
| 88 local src = Io.stdin.read_text() | |
| 89 local fn = load(src,"stdin") | |
| 90 fn() | |
| 91 return | |
| 92 else | |
| 93 standalone_error( "unrecognized option '"..arg.."'" ) | |
| 94 return | |
| 95 end | |
| 96 i = i + 1 | |
| 97 end | |
| 98 end | |
| 99 if showVersion then print(_VERSION) end | |
| 100 if i <= #args then | |
| 101 local file = args[i] | |
| 102 _G.arg = {} | |
| 103 for j,v in ipairs(args) do | |
| 104 _G.arg[j-i] = v | |
| 105 end | |
| 106 local fn = load_file(file) | |
| 107 fn( Table.unpack(_G.arg) ) | |
| 108 end | |
| 109 if interactive then | |
| 110 Debug.debug("> ") | |
| 111 end | |
| 112 end |