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comparison src/luan/tools/cmd_line.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 | |
| children | 7e160d2f6d9c |
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| 132:14281d5bd36f | 133:98aba462c422 |
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| 1 | |
| 2 local standalone_usage = [=[ | |
| 3 usage: java luan.CmdLine [options] [script [args]] | |
| 4 Available options are: | |
| 5 -e stat execute string 'stat' | |
| 6 -i enter interactive mode after executing 'script' | |
| 7 -v show version information | |
| 8 -- stop handling options | |
| 9 - stop handling options and execute stdin | |
| 10 ]=] | |
| 11 | |
| 12 local function standalone_error(msg) | |
| 13 Io.stderr.write( msg, "\n", standalone_usage ) | |
| 14 end | |
| 15 | |
| 16 | |
| 17 local args = {...} | |
| 18 local interactive = false | |
| 19 local showVersion = false | |
| 20 local i = 1 | |
| 21 if #args == 0 then | |
| 22 interactive = true | |
| 23 showVersion = true | |
| 24 else | |
| 25 while i <= #args do | |
| 26 local arg = args[i] | |
| 27 if arg.sub(1,1) ~= "-" or arg == "--" then | |
| 28 break | |
| 29 end | |
| 30 if arg == "-i" then | |
| 31 interactive = true | |
| 32 elseif arg == "-v" then | |
| 33 showVersion = true | |
| 34 elseif arg == "-e" then | |
| 35 i = i + 1 | |
| 36 if i == #args then | |
| 37 standalone_error "'-e' needs argument" | |
| 38 return | |
| 39 end | |
| 40 local cmd = args[i] | |
| 41 local fn = load(cmd,"(command line)",true,true) | |
| 42 local result = Table.pack( fn() ) | |
| 43 if result.n > 0 then | |
| 44 print( Table.unpack(result,1,result.n) ) | |
| 45 end | |
| 46 elseif arg == "-" then | |
| 47 local src = Io.stdin.read_text() | |
| 48 local fn = load(src,"stdin") | |
| 49 fn() | |
| 50 return | |
| 51 else | |
| 52 standalone_error( "unrecognized option '"..arg.."'" ) | |
| 53 return | |
| 54 end | |
| 55 i = i + 1 | |
| 56 end | |
| 57 end | |
| 58 if showVersion then print(_VERSION) end | |
| 59 if i <= #args then | |
| 60 local file = args[i] | |
| 61 _G.arg = {} | |
| 62 for j,v in ipairs(args) do | |
| 63 _G.arg[j-i] = v | |
| 64 end | |
| 65 local fn = load_file(file) | |
| 66 fn( Table.unpack(_G.arg) ) | |
| 67 end | |
| 68 if interactive then | |
| 69 Debug.debug("> ") | |
| 70 end |