github.lua

--edit of the pastebin program to get stuff from Github, edited by Vexatos
local term = require("term")
local shell = require("shell")
local fs = require("filesystem")
local component = require("component")
local internet = require("internet")

local tArgs, options = shell.parse(...)

local function printUsage()
    print( "Usages:" )
    print( "github get username/reponame/branch/path <filename>" )
    print( "github run username/reponame/branch/path <arguments>" )
    print( "'github help' for more information" )
end

if not component.isAvailable("internet") then
  print( "Error: Github requires an Internet Card to run" )
  return
end

local function get(url, sPathN, sFile)
  term.write( "Connecting to github.com... " )
  local sResponse = ""
  local file, reason = io.open(sPathN, "w")
  if not file then
    print("failed opening file for writing: " .. reason)
    return
  end
  local result, response = pcall( internet.request, url)

  if result then
    print( "Success." )
    for chunk in response do
      file:write( chunk )
    end
      file:close()
      print( "Downloaded as "..sFile )
    return sResponse
  else
    file:close()
    print( "Failed: "..response )
  end
end

local function run(url, sArg)
local tmpFile = "/tmp/tmp_github.lua"
    get(url, shell.resolve(tmpFile), "tmp_github.lua")
    term.clear()
    print("Running...")
local success, msg = shell.execute(tmpFile, _ENV, table.unpack(tArgs, sArg))
    if not success then
      print( msg )
    end
    fs.remove(tmpFile)

end

local sCommand = tArgs[1]
if sCommand == "get" then
    -- Download a file from github.com
    if #tArgs < 6 then
      if #tArgs == 3 then

        -- Determine file to download
        local sFile = tArgs[3]
        local sPathN = shell.resolve( sFile )
        local url = "https://raw.github.com/"..tArgs[2]
        if fs.exists( sPathN ) then
          if not options.f then
            print("file already exists")
            return
          end
        end

        -- GET the contents from github
        get(url, sPathN, sFile)
      else
        printUsage()
        return
      end
    elseif #tArgs == 6 then
      -- Determine file to download
      local sFile = tArgs[6]
      local sPathN = shell.resolve( sFile )
      local url = "https://raw.github.com/"..tArgs[2].."/"..tArgs[3].."/"..tArgs[4].."/"..tArgs[5]
      if fs.exists( sPathN ) then
        if not options.f then
          print( "File already exists" )
          return
        end
      end

      -- GET the contents from github
      get(url,sPathN,sFile)

    else
      printUsage()
      return
    end

elseif sCommand == "run" then
  if #tArgs >= 2 then
    if string.find(tArgs[2],"/") then
      local url = "https://raw.github.com/"..tArgs[2]
      run(url, 3)
    else
      if #tArgs >= 5 then
        local url = "https://raw.github.com/"..tArgs[2].."/"..tArgs[3].."/"..tArgs[4].."/"..tArgs[5]
        run(url, 6)
      else
        printUsage()
        return
      end
    end
  else
    printUsage()
    return
  end
elseif sCommand == "help" then
  term.clear()
  print( "github is a program that allows you to get files" )
  print( "from a Github repository and store or run them in your Computer." )
  print ("")
  printUsage()
  print ("")
  print("There is also another spelling:")
  print("github get <username> <reponame> <branch> <path> <filename>")
  print("github run <username> <reponame> <branch> <path> [arguments]")
  print("Note: Do not use the '/' (slash) character with this spelling, except in <path>!")
else
    printUsage()
    return
end