From 99cb58d9fca503f58acf1e43ad31137712245a30 Mon Sep 17 00:00:00 2001
From: 20kdc <asdd2808@gmail.com>
Date: Wed, 26 Sep 2018 01:46:16 +0100
Subject: [PATCH] Add a tape interface application, 'app-tapedeck'

---
 claw/repo-claw.lua                       |  17 ++
 repository/apps/app-tapedeck.lua         | 206 +++++++++++++++++++++++
 repository/docs/repoauthors/app-tapedeck |   2 +
 3 files changed, 225 insertions(+)
 create mode 100644 repository/apps/app-tapedeck.lua
 create mode 100644 repository/docs/repoauthors/app-tapedeck

diff --git a/claw/repo-claw.lua b/claw/repo-claw.lua
index 24aeef8..5791869 100644
--- a/claw/repo-claw.lua
+++ b/claw/repo-claw.lua
@@ -200,6 +200,23 @@ return {
    "docs/repoauthors/app-nbcompose"
   },
  },
+ ["app-tapedeck"] = {
+  desc = "Computronics Tape Drive interface",
+  v = 0,
+  deps = {
+   "neo",
+   "zzz-license-pd"
+  },
+  dirs = {
+   "apps",
+   "docs",
+   "docs/repoauthors"
+  },
+  files = {
+   "apps/app-tapedeck.lua",
+   "docs/repoauthors/app-tapedeck"
+  },
+ },
  ["app-launchbar"] = {
   desc = "Application launcher bar",
   v = 0,
diff --git a/repository/apps/app-tapedeck.lua b/repository/apps/app-tapedeck.lua
new file mode 100644
index 0000000..991b1f2
--- /dev/null
+++ b/repository/apps/app-tapedeck.lua
@@ -0,0 +1,206 @@
+-- This is released into the public domain.
+-- No warranty is provided, implied or otherwise.
+
+-- app-tapedeck.lua : Computronics Tape interface.
+-- Added note: Computerized record discs aren't available, so it can't be called vinylscratch.
+-- Authors: 20kdc
+
+local tapes = {}
+for v in neo.requireAccess("c.tape_drive", "tapedrives").list() do
+ table.insert(tapes, v)
+end
+
+local event = require("event")(neo)
+local neoux = require("neoux")(event, neo)
+
+-- There's no way to get these, so they get reset
+local pcvals = {vol = 100, spd = 100}
+local function pcbox(x, y, low, high, id, fun)
+ return neoux.tcfield(x, y, 5, function (tx)
+  if tx then
+   pcvals[id] = math.min(math.max(0, math.floor(tonumber(tx) or 0)), high)
+   fun(math.max(pcvals[id], low) / 100)
+  end
+  return tostring(pcvals[id])
+ end)
+end
+
+local window
+local running = true
+local focused = true
+
+local updateTick
+
+local function genPlayer(inst)
+ local cachedLabel = inst.getLabel() or ""
+ local cachedState = inst.getState()
+ local function pausePlay()
+  if inst.getState() == "PLAYING" then
+   inst.stop()
+  else
+   inst.play()
+  end
+  window.reset(genPlayer(inst))
+ end
+ -- Common code for reading/writing tapes.
+ -- Note that it tries to allow playback to resume later.
+ local function rwButton(mode)
+  local fh = neoux.fileDialog(mode)
+  if not fh then return end
+  inst.stop()
+  local sp = inst.getPosition()
+  local tapeSize = inst.getSize()
+  inst.seek(-tapeSize)
+  local tapeReadBuf = 8192
+  local tapePos = 0
+  while tapePos < tapeSize do
+   if mode then
+    local data = inst.read(tapeReadBuf)
+    if not data then break end
+    tapePos = tapePos + tapeReadBuf
+    local res, ifo = fh.write(data)
+    if not res then
+     neoux.startDialog(tostring(ifo), "issue")
+     break
+    end
+   else
+    local data = fh.read(tapeReadBuf)
+    if not data then break end
+    tapePos = tapePos + #data
+    inst.write(data)
+   end
+  end
+  inst.seek(-tapeSize)
+  inst.seek(sp)
+  fh.close()
+ end
+ local elems = {
+  {
+   x = 1,
+   y = 5,
+   w = 20,
+   h = 1,
+   selectable = true,
+   line = function (w, x, y, lined, bg, fg, selected)
+    local lx = ""
+    local pos = inst.getPosition()
+    if inst.isReady() then
+     -- Show a bar
+     local tick = inst.getSize() / 13
+     for i = 1, 13 do
+      local alpos = (tick * i) - (tick / 2)
+      if pos > alpos then
+       lx = lx .. "="
+      else
+       lx = lx .. "-"
+      end
+     end
+    else
+     lx = "NO TAPE HERE."
+    end
+    local sec = pos / 4096
+    lx = lx .. string.format(" %03i:%02i", math.floor(sec / 60), math.floor(sec) % 60)
+    if selected then bg, fg = fg, bg end
+    window.span(x, y, lx, bg, fg)
+   end,
+   key = function (w, update, a, b, c, kf)
+    local amount = 40960
+    if kf.shift or kf.rshift then
+     amount = amount * 24
+    end
+    if c then
+     if a == 32 then
+      pausePlay()
+     elseif b == 203 then
+      inst.seek(-amount)
+      update()
+      return true
+     elseif b == 205 then
+      inst.seek(amount)
+      update()
+      return true
+     end
+    end
+   end
+  },
+  neoux.tcrawview(14, 3, {
+   "% Vol. ",
+   "% Speed"
+  }),
+  pcbox(9, 3, 0, 100, "vol", inst.setVolume),
+  pcbox(9, 4, 25, 200, "spd", inst.setSpeed),
+  neoux.tcbutton(1, 3, "{", function (w)
+   inst.seek(-inst.getSize())
+  end),
+  neoux.tcbutton(5, 3, "}", function (w)
+   inst.seek(inst.getSize())
+  end),
+  neoux.tcbutton(1, 4, ((inst.getState() == "PLAYING") and "Pause") or "Play", function (w)
+   pausePlay()
+  end),
+  -- R/W buttons
+  neoux.tcbutton(1, 2, "Read", function (w)
+   rwButton(true)
+  end),
+  neoux.tcbutton(8, 2, "Write", function (w)
+   rwButton(false)
+  end),
+  neoux.tcfield(1, 1, 20, function (tx)
+   if tx then
+    inst.setLabel(tx)
+    cachedLabel = tx
+   end
+   return cachedLabel
+  end)
+ }
+ updateTick = function ()
+  local lcl = cachedLabel
+  cachedLabel = inst.getLabel() or ""
+  elems[1].update(window)
+  if inst.getState() ~= cachedState then
+   window.reset(genPlayer(inst))
+  elseif lcl ~= cachedLabel then
+   elems[#elems].update(window)
+  end
+ end
+ local n = neoux.tcwindow(20, 5, elems, function (w)
+  updateTick = nil
+  running = false
+  w.close()
+ end, 0xFFFFFF, 0)
+ return 20, 5, inst.address, function (a, ...)
+  if a == "focus" then
+   focused = (...) or true
+  end
+  return n(a, ...)
+ end
+end
+local function genList()
+ local elems = {}
+ for k, v in ipairs(tapes) do
+  elems[k] = neoux.tcbutton(1, k, v.address, function (w)
+   window.reset(genPlayer(v))
+  end)
+ end
+ tapes = nil
+ return 40, #elems, "choose", neoux.tcwindow(40, #elems, elems, function (w)
+  running = false
+  w.close()
+ end, 0xFFFFFF, 0)
+end
+
+
+window = neoux.create(genList())
+
+-- Timer for time update
+local function tick()
+ if updateTick then
+  updateTick()
+ end
+ event.runAt(os.uptime() + ((focused and 1) or 10), tick)
+end
+event.runAt(0, tick)
+
+while running do
+ event.pull()
+end
diff --git a/repository/docs/repoauthors/app-tapedeck b/repository/docs/repoauthors/app-tapedeck
new file mode 100644
index 0000000..2d3b037
--- /dev/null
+++ b/repository/docs/repoauthors/app-tapedeck
@@ -0,0 +1,2 @@
+repository/apps/app-tapedeck.lua: 20kdc, Public Domain
+