shebang for NYAOS 3.x

shebang.lua

-- Shebang for NYAOS 3.x
--
-- Maintainer:   DeaR <[email protected]>
-- Last Change:  13-Aug-2013.
-- License:      MIT License {{{
--     Copyright (c) 2013 DeaR <[email protected]>
--     Copyright (c) 2010 wantora
--
--     Permission is hereby granted, free of charge, to any person obtaining a
--     copy of this software and associated documentation files (the
--     "Software"), to deal in the Software without restriction, including
--     without limitation the rights to use, copy, modify, merge, publish,
--     distribute, sublicense, and/or sell copies of the Software, and to
--     permit persons to whom the Software is furnished to do so, subject to
--     the following conditions:
--
--     The above copyright notice and this permission notice shall be included
--     in all copies or substantial portions of the Software.
--
--     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
--     OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
--     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
--     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
--     CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
--     TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
--     SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-- }}}

local filemap = {}
local dirmap = {}

function nyaos.command.shebang(src, dest)
  if not src then
    for k, v in pairs(dirmap) do
      print(k .. ' ' .. v)
    end
    for k, v in pairs(filemap) do
      print(k .. ' ' .. v)
    end
  else
    local p = dest:gsub('[/\\]$', '')
    local stat = nyaos.stat(p)
    if stat and stat.directory then
      dirmap[src] = dest
    else
      filemap[src] = dest
    end
  end
end

function nyaos.command.unshebang(src)
  if not src then
    for k, v in pairs(dirmap) do
      print(k .. ' ' .. v)
    end
    for k, v in pairs(filemap) do
      print(k .. ' ' .. v)
    end
  else
    local p = dest:gsub('[/\\]$', '')
    local stat = nyaos.stat(p)
    if stat and stat.directory then
      dirmap[src] = nil
    else
      filemap[src] = nil
    end
  end
end

local cmdutils = {}
function cmdutils.split(cmdline, sep)
  local quote = false
  local pos = 1

  while pos <= #cmdline do
    local s = cmdline:sub(pos, pos)

    if s == '\034' then
      quote = not quote
    elseif s:match('^[\129-\159\224-\252]$') then
      pos = pos + 1
    elseif (not quote) and s:match(sep) then
      break
    end

    pos = pos + 1
  end

  return cmdline:sub(1, pos - 1), cmdline:sub(pos + 1), cmdline:sub(pos, pos)
end

local function append_ext(name)
  if nyaos.access(name, 0) then
    return name
  elseif nyaos.access(name .. '.exe', 0) then
    return name .. '.exe'
  elseif nyaos.access(name ..  '.com', 0) then
    return name .. '.com'
  end
  return name
end

local function namefilter(name)
  for file, path in pairs(filemap) do
    if name == file then
      return path
    end
  end
  for prefix, path in pairs(dirmap) do
    if name:sub(1, #prefix) == prefix then
      return path .. name:sub(#prefix + 1)
    end
  end
  return name
end

local function drop_first_token(args)
  local _, param, sep = cmdutils.split(args, '%s')
  return sep .. param
end

function nyaos.filter3.shebang(name, param)
  local suffix = string.lower(string.sub(name, #name - 3))

  if suffix ~= '.exe' and suffix ~= '.com' then
    local f = io.open(name, 'r')
    if f:read(2) == '#!' then
      local shebang = f:read():gsub('^%s*', '')
      f:close()

      local new_name = append_ext(namefilter(cmdutils.split(shebang, '%s')))
      local new_param = shebang .. ' \034' .. name .. '\034' .. drop_first_token(param)
      return new_name, new_param
    else
      f:close()
    end
  end
end

-- vim: ft=lua

shebang.md

shebang.lua

Shebang for NYAOS 3.x

Install

1. Checkout the source from repository

   git clone https://gist.github.com/5047106.git shebang

2. add to _nya

   source shebang/shebang.lua

Usage

• shebang /bin/ C:\msysgit\bin\
• shebang /usr/bin/python C:\Python27\python.exe
• exec shebang file

Sample

#!/bin/sh
echo ":D"

Issue

• @nayuri_aohime

Author

DeaR ([email protected])

@nayuri_aohime

License

Copyright (c) 2013 DeaR <[email protected]>
Copyright (c) 2010 wantora

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies
or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.