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-- vim: ft=terra
local m = {
shorthand = {maxlen = 14}
}
-- swap in place -- faster on little endian
m.netswap_ip = macro(function(ty, src, dest)
if ty:astype().type ~= 'integer' then error('bad type') end
local bytes = ty:astype().bytes
src = `[&uint8](src)
dest = `[&uint8](dest)
................................................................................
else dgtct = dgtct + 1 end
end else
buf = buf - 1
@buf = 0x30
end
return buf
end
return m
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-- vim: ft=terra
local m = {
shorthand = {maxlen = 14}
}
local pstring = lib.mem.ptr(int8)
-- swap in place -- faster on little endian
m.netswap_ip = macro(function(ty, src, dest)
if ty:astype().type ~= 'integer' then error('bad type') end
local bytes = ty:astype().bytes
src = `[&uint8](src)
dest = `[&uint8](dest)
................................................................................
else dgtct = dgtct + 1 end
end else
buf = buf - 1
@buf = 0x30
end
return buf
end
terra m.ndigits(n: intptr, base: intptr): intptr
var c = base
var i = 1
while true do
if n < c then return i end
c = c * base
i = i + 1
end
end
terra m.fsz_parse(f: pstring): {intptr, bool}
-- take a string representing a file size and return {nbytes, true}
-- or {0, false} if the parse fails
if f.ct == 0 then f.ct = lib.str.sz(f.ptr) end
var sz: intptr = 0
for i = 0, f.ct do
if f(i) == @',' then goto skip end
if f(i) >= 0x30 and f(i) <= 0x39 then
sz = sz * 10
sz = sz + f(i) - 0x30
else
if i+1 == f.ct or f(i) == 0 then return sz, true end
if i+2 == f.ct or f(i+1) == 0 then
if f(i) == @'b' then return sz/8, true end -- bits
else
var s: intptr = 0
if i+3 == f.ct or f(i+2) == 0 then
s = i + 1
elseif (i+4 == f.ct or f(i+3) == 0) and f(i+1) == @'i' then
-- grudgingly tolerate ~mebibits~ and its ilk, without
-- affecting the result in any way
s = i + 2
else return 0, false end
if f(s) == @'b' then sz = sz/8 -- bits
elseif f(s) ~= @'B' then return 0, false end -- wth
end
var c = f(i)
if c >= @'A' and c <= @'Z' then c = c - 0x20 end
switch c do -- normal char literal syntax doesn't work here, leads to llvm error (!!)
case [uint8]([string.byte('k')]) then return sz * [1024ULL ^ 1], true end
case [uint8]([string.byte('m')]) then return sz * [1024ULL ^ 2], true end
case [uint8]([string.byte('g')]) then return sz * [1024ULL ^ 3], true end
case [uint8]([string.byte('t')]) then return sz * [1024ULL ^ 4], true end
case [uint8]([string.byte('e')]) then return sz * [1024ULL ^ 5], true end
case [uint8]([string.byte('y')]) then return sz * [1024ULL ^ 6], true end
else return sz, true
end
end
::skip::end
return sz, true
end
return m
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