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Merge branch 'patch-2' of https://github.com/SoniEx2/OpenComputers into master-MC1.7.10

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This commit is contained in:
Florian Nücke 2015-01-11 01:11:03 +01:00
commit 38c5f41069
1 changed files with 128 additions and 3 deletions
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131
src/main/resources/assets/opencomputers/loot/OpenOS/lib/buffer.lua
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@ -103,6 +103,132 @@ function buffer:read(...)
return buffer
end
local function readNumber()
local len, sub
if self.mode.b then
len = rawlen
sub = string.sub
else
len = unicode.len
sub = unicode.sub
end
local buffer = ""
local first = true
local decimal = false
local last = false
local hex = false
local pat = "^[0-9]+"
local minbuf = 3 -- "+0x" (sign + hexadecimal tag)
-- this function is used to read trailing numbers (1e2, 0x1p2, etc)
local function readnum(checksign)
local _buffer = ""
local sign = ""
while true do
if len(self.bufferRead) == 0 then
local result, reason = readChunk()
if not result then
if reason then
return nil, reason
else -- eof
return #_buffer > 0 and (sign .. _buffer) or nil
end
end
end
if checksign then
local _sign = sub(self.bufferRead, 1, 1)
if _sign == "+" or _sign == "-" then
-- "eat" the sign (Rio Lua behaviour)
sign = sub(self.bufferRead, 1, 1)
self.bufferRead = sub(self.bufferRead, 2)
end
checksign = false
else
local x,y = string.find(self.bufferRead, pat)
if not x then
break
else
_buffer = _buffer .. sub(self.bufferRead, 1, y)
self.bufferRead = sub(self.bufferRead, y + 1)
end
end
end
return #_buffer > 0 and (sign .. _buffer) or nil
end
while true do
if len(self.bufferRead) == 0 or len(self.bufferRead) < minbuf then
local result, reason = readChunk()
if not result then
if reason then
return nil, reason
else -- eof
return #buffer > 0 and tonumber(buffer) or nil
end
end
end
-- these ifs are here so we run the buffer check above
if first then
local sign = sub(self.bufferRead, 1, 1)
if sign == "+" or sign == "-" then
-- "eat" the sign (Rio Lua behaviour)
buffer = buffer .. sub(self.bufferRead, 1, 1)
self.bufferRead = sub(self.bufferRead, 2)
end
local hextag = sub(self.bufferRead, 1, 2)
if hextag == "0x" or hextag == "0X" then
pat = "^[0-9A-Fa-f]+"
-- "eat" the 0x, see https://gist.github.com/SoniEx2/570a363d81b743353151
buffer = buffer .. sub(self.bufferRead, 1, 2)
self.bufferRead = sub(self.bufferRead, 3)
hex = true
end
minbuf = 0
first = false
elseif decimal then
local sep = sub(self.bufferRead, 1, 1)
if sep == "." then
buffer = buffer .. sep
self.bufferRead = sub(self.bufferRead, 2)
local temp = readnum(false) -- no sign
if temp then
buffer = buffer .. temp
end
end
if not tonumber(buffer) then break end
decimal = false
last = true
minbuf = 1
elseif last then
local tag = sub(self.bufferRead, 1, 1)
if hex and (tag == "p" or tag == "P") then
local temp = sub(self.bufferRead, 1, 1)
self.bufferRead = sub(self.bufferRead, 2)
local temp2 = readnum(true) -- this eats the next sign if any
if temp2 then
buffer = buffer .. temp .. temp2
end
elseif tag == "e" or tag == "E" then
local temp = sub(self.bufferRead, 1, 1)
self.bufferRead = sub(self.bufferRead, 2)
local temp2 = readnum(true) -- this eats the next sign if any
if temp2 then
buffer = buffer .. temp .. temp2
end
end
break
else
local x,y = string.find(self.bufferRead, pat)
if not x then
minbuf = 1
decimal = true
else
buffer = buffer .. sub(self.bufferRead, 1, y)
self.bufferRead = sub(self.bufferRead, y + 1)
end
end
end
return tonumber(buffer)
end
local function readLine(chop)
local start = 1
while true do
@ -148,8 +274,7 @@ function buffer:read(...)
end
format = unicode.sub(format, 2, 2)
if format == "n" then
--[[ TODO ]]
error("not implemented")
return readNumber()
elseif format == "l" then
return readLine(true)
elseif format == "L" then
@ -297,4 +422,4 @@ function buffer:write(...)
return self
end
return buffer
return buffer