[CC][1.1] Get Methods

--[[
HPWebcamAble presents...
Get Methods

=== Description ====
Dispalys the functions of a periperal

Example: Monitor, Turtle, Printer...


==== Installation and Use ====
Pastebin Code: sKLqTGrM

To download a file from pastebin:
pastebin get <code> <name>

Place computer next to the block you want the methods of
Run the program with the side of the peripheral as an argument

This displays the functions of
a peripheral using peirpheral.getMethods(side)


==== Update History ====
The pastebin will always have the most recent version

|1.1|  <-- This program
  -You can now scroll through the pages with the arrow keys
  -You can use it on the regular (non color) computer now
  -Cleaned up code
|1.0|
  -Release
]]

args = {...}

--Variables--
local pFunctions
local w,h = term.getSize()

--Functions--
function tc(...)
  if term.isColor() then
    term.setTextColor(...)
  end
end

function isSide(name)
  local sides = rs.getSides()
  for i = 1, #sides do
    if name == sides[i] then
      return true
    end
  end
  return false
end


--Program--
if #args == 0 then
  print("Usages:")
  print(shell.getRunningProgram().." <side>")
  return
elseif not isSide(args[1]) then
  printError(args[1].." isn't a valid side")
  return
elseif not peripheral.isPresent(args[1]) then
  printError("There is no peripheral on that side")
  return
end

term.setCursorPos(1,1)
term.clear()
tc(colors.yellow)
local heading = "Functions for '"..peripheral.getType(args[1]).."' (Located on the "..args[1]..")"
local hLines = print(heading)+1
tc(colors.white)

local pFunctions = peripheral.getMethods(args[1])
local pages = math.ceil(#pFunctions/(h-hLines))
local fPerPage = math.floor(#pFunctions/pages)
local cPage = 1

if pages > 1 then
  while true do
    for i = 1, h-hLines do
      local curF = i+fPerPage*(cPage-1)
      if curF > #pFunctions then break end
      term.setCursorPos(1,hLines+i-1)
      term.write(pFunctions[curF])
    end
    term.setCursorPos(1,h)
    if cPage == 1 then
      tc(colors.yellow)
      term.write("Use arrow keys to navagate < Back / Forward >")
      tc(colors.white)
    elseif cPage < pages then
      tc(colors.yellow)
      term.write("< Back / Forward >")
      tc(colors.white)
    else
      tc(colors.yellow)
      term.write("< Back / Exit >")
      tc(colors.white)
    end
    local continue = true
    while continue do
      local event,key = os.pullEvent("key")
      if key == keys.right then
        if cPage < pages then
          cPage = cPage+1
          break
        else
          term.setCursorPos(1,h)
          tc(colors.yellow)
          term.write("Press > (Right) to exit, or < (Left) to cancel")
          tc(colors.white)
          while true do
            local event1,key1 = os.pullEvent("key")
            if key1 == keys.right then
              term.setCursorPos(1,h)
              term.clearLine()
              term.setCursorPos(1,math.ceil(#pFunctions/pages)+hLines)
              error()
            elseif key1 == keys.left then
              continue = false
              break
            end
          end
        end
      elseif key == keys.left then
        if cPage > 1 then
          cPage = cPage-1
          break
        end
      end
    end
    term.setCursorPos(1,1)
    term.clear()
    tc(colors.yellow)
    print(heading)
    tc(colors.white)
  end
else
  for a,b in pairs(pFunctions) do
    print(b)
  end
end