From 634bdee3f2193c51c8131694915414ef98b0861a Mon Sep 17 00:00:00 2001
From: "kepler155c@gmail.com" <kepler155c@gmail.com>
Date: Sat, 22 Apr 2017 02:30:41 -0400
Subject: [PATCH] bug fixes storage mgr

---
 apps/base64dl.lua   |  35 ++++++++++++
 sys/apis/base64.lua | 135 ++++++++++++++++++++++++++++++++++++++++++++
 sys/apis/ui.lua     |  14 +++--
 3 files changed, 180 insertions(+), 4 deletions(-)
 create mode 100644 apps/base64dl.lua
 create mode 100644 sys/apis/base64.lua

diff --git a/apps/base64dl.lua b/apps/base64dl.lua
new file mode 100644
index 0000000..33b0351
--- /dev/null
+++ b/apps/base64dl.lua
@@ -0,0 +1,35 @@
+require = requireInjector(getfenv(1))
+Base64 = require('base64')
+
+local args = { ... }
+
+if not args[2] then
+  error('Syntax: base64dl <file name> <url>')
+end
+
+local c = http.get(args[2])
+
+if not c then
+  error('unable to open url')
+end
+
+local data = c.readAll()
+c.close()
+
+print('size: ' .. #data)
+local decoded = Base64.decode(data)
+print('decoded: ' .. #decoded)
+
+local file = io.open(shell.resolve(args[1]), "wb")
+if not file then
+  error('Unable to open ' .. args[1], 2)
+end
+for k,b in ipairs(decoded) do
+  if (k % 1000) == 0 then
+    os.sleep(0)
+  end
+  file:write(b)
+end
+
+file:close()
+print('done')
diff --git a/sys/apis/base64.lua b/sys/apis/base64.lua
new file mode 100644
index 0000000..767b86d
--- /dev/null
+++ b/sys/apis/base64.lua
@@ -0,0 +1,135 @@
+-- Base64 Encoder / Decoder
+-- By KillaVanilla
+-- see: http://www.computercraft.info/forums2/index.php?/topic/12450-killavanillas-various-apis/
+
+Base64 = { }
+
+local alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+
+local function sixBitToBase64(input)
+  return string.sub(alphabet, input+1, input+1)
+end
+
+local function base64ToSixBit(input)
+  for i=1, 64 do
+    if input == string.sub(alphabet, i, i) then
+      return i-1
+    end
+  end
+end
+
+local function octetToBase64(o1, o2, o3)
+  local i1 = sixBitToBase64(bit.brshift(bit.band(o1, 0xFC), 2))
+  local i2 = "A"
+  local i3 = "="
+  local i4 = "="
+  if o2 then
+    i2 = sixBitToBase64(bit.bor( bit.blshift(bit.band(o1, 3), 4), bit.brshift(bit.band(o2, 0xF0), 4) ))
+    if not o3 then
+      i3 = sixBitToBase64(bit.blshift(bit.band(o2, 0x0F), 2))
+    else
+      i3 = sixBitToBase64(bit.bor( bit.blshift(bit.band(o2, 0x0F), 2), bit.brshift(bit.band(o3, 0xC0), 6) ))
+    end
+  else
+    i2 = sixBitToBase64(bit.blshift(bit.band(o1, 3), 4))
+  end
+  if o3 then
+    i4 = sixBitToBase64(bit.band(o3, 0x3F))
+  end
+  
+  return i1..i2..i3..i4
+end
+
+-- octet 1 needs characters 1/2
+-- octet 2 needs characters 2/3
+-- octet 3 needs characters 3/4
+
+local function base64ToThreeOctet(s1)
+  local c1 = base64ToSixBit(string.sub(s1, 1, 1))
+  local c2 = base64ToSixBit(string.sub(s1, 2, 2))
+  local c3 = 0
+  local c4 = 0
+  local o1 = 0
+  local o2 = 0
+  local o3 = 0
+  if string.sub(s1, 3, 3) == "=" then
+    c3 = nil
+    c4 = nil
+  elseif string.sub(s1, 4, 4) == "=" then
+    c3 = base64ToSixBit(string.sub(s1, 3, 3))
+    c4 = nil
+  else
+    c3 = base64ToSixBit(string.sub(s1, 3, 3))
+    c4 = base64ToSixBit(string.sub(s1, 4, 4))
+  end
+  o1 = bit.bor( bit.blshift(c1, 2), bit.brshift(bit.band( c2, 0x30 ), 4) )
+  if c3 then
+    o2 = bit.bor( bit.blshift(bit.band(c2, 0x0F), 4), bit.brshift(bit.band( c3, 0x3C ), 2) )
+  else
+    o2 = nil
+  end
+  if c4 then
+    o3 = bit.bor( bit.blshift(bit.band(c3, 3), 6), c4 )
+  else
+    o3 = nil
+  end
+  return o1, o2, o3
+end
+
+local function splitIntoBlocks(bytes)
+  local blockNum = 1
+  local blocks = {}
+  for i=1, #bytes, 3 do
+    blocks[blockNum] = {bytes[i], bytes[i+1], bytes[i+2]}
+    --[[
+    if #blocks[blockNum] < 3 then
+      for j=#blocks[blockNum]+1, 3 do
+        table.insert(blocks[blockNum], 0)
+      end
+    end
+    ]]
+    blockNum = blockNum+1
+  end
+  return blocks
+end
+
+function Base64.encode(bytes)
+  local blocks = splitIntoBlocks(bytes)
+  local output = ""
+  for i=1, #blocks do
+    output = output..octetToBase64( unpack(blocks[i]) )
+  end
+  return output
+end
+
+function Base64.decode(str)
+  local bytes = {}
+  local blocks = {}
+  local blockNum = 1
+  for i=1, #str, 4 do
+    blocks[blockNum] = string.sub(str, i, i+3)
+    blockNum = blockNum+1
+  end
+  for i=1, #blocks do
+    local o1, o2, o3 = base64ToThreeOctet(blocks[i])
+    table.insert(bytes, o1)
+    table.insert(bytes, o2)
+    table.insert(bytes, o3)
+if (i % 1000) == 0 then
+  os.sleep(0)
+end
+  end
+  -- Remove padding:
+  --[[
+  for i=#bytes, 1, -1 do
+    if bytes[i] ~= 0 then
+      break
+    else
+      bytes[i] = nil
+    end
+  end
+  ]]
+  return bytes
+end
+
+return Base64
diff --git a/sys/apis/ui.lua b/sys/apis/ui.lua
index 18f86ed..24317a3 100644
--- a/sys/apis/ui.lua
+++ b/sys/apis/ui.lua
@@ -1464,10 +1464,6 @@ end
 function UI.Grid:setParent()
   UI.Window.setParent(self)
   self:update()
-end
-
-function UI.Grid:resize()
-  UI.Window.resize(self)
 
   if not self.pageSize then
     if self.disableHeader then
@@ -1478,6 +1474,16 @@ function UI.Grid:resize()
   end
 end
 
+function UI.Grid:resize()
+  UI.Window.resize(self)
+
+  if self.disableHeader then
+    self.pageSize = self.height
+  else
+    self.pageSize = self.height - 1
+  end
+end
+
 function UI.Grid:adjustWidth()
   if self.autospace then
     for _,col in pairs(self.columns) do