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import algorithm
import unicode
import sets
import tables
import sugar
import strutils
type
IDNATableStatus* = enum
IDNA_VALID, IDNA_IGNORED, IDNA_MAPPED, IDNA_DEVIATION, IDNA_DISALLOWED
type
LowMap[T] = seq[(uint16, T)]
FullMap[T] = (LowMap[T], seq[(uint32, T)])
FullRangeList = (seq[(uint16, uint16)], seq[(uint32, uint32)])
FullSet = (set[uint16], HashSet[uint32])
const IdnaMappingTable = staticRead"res/map/IdnaMappingTable.txt"
func loadStuff(s: string): (FullMap[cstring], # Map
FullRangeList, # Disallowed Ranges
FullSet, # Disallowed
FullSet, # Ignored
LowMap[cstring]) = # Deviation
template add_map(i: uint32, str: string) =
if i <= high(uint16):
result[0][0].add((uint16(i), cstring(str)))
else:
result[0][1].add((i, cstring(str)))
template add_disallow(i, j: uint32) =
if i <= high(uint16):
result[1][0].add((uint16(i), uint16(j)))
else:
result[1][1].add((i, j))
template add_disallow(i: uint32) =
if i <= high(uint16):
result[2][0].incl(uint16(i))
else:
result[2][1].incl(i)
template add_ignore(rstart, rend: uint32) =
for i in rstart..rend:
if i <= high(uint16):
result[3][0].incl(uint16(i))
else:
result[3][1].incl(i)
template add_ignore(i: uint32) =
if i <= high(uint16):
result[3][0].incl(uint16(i))
else:
result[3][1].incl(i)
template add_deviation(i: uint32, str: string) =
if i <= high(uint16):
result[4].add((uint16(i), cstring(str)))
else:
assert false
template add(firstcol: string, str: string, temp: untyped) =
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = uint32(parseHexInt(fcs[0]))
let rend = uint32(parseHexInt(fcs[1]))
for i in rstart..rend:
temp(i, str)
else:
temp(uint32(parseHexInt(firstcol)), str)
template add(firstcol: string, temp: untyped) =
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = uint32(parseHexInt(fcs[0]))
let rend = uint32(parseHexInt(fcs[1]))
temp(rstart, rend)
else:
temp(uint32(parseHexInt(firstcol)))
for line in s.split('\n'):
if line.len == 0 or line[0] == '#':
continue
var i = 0
var firstcol = ""
var status = ""
var thirdcol: seq[string]
var fourthcol = ""
while i < line.len and line[i] notin {'#', ';'}:
if line[i] != ' ':
firstcol &= line[i]
inc i
if line[i] != '#':
inc i
while i < line.len and line[i] notin {'#', ';'}:
if line[i] != ' ':
status &= line[i]
inc i
if line[i] != '#':
inc i
var nw = true
while i < line.len and line[i] notin {'#', ';'}:
if line[i] == ' ':
nw = true
else:
if nw:
thirdcol.add("")
nw = false
thirdcol[^1] &= line[i]
inc i
if line[i] != '#':
inc i
while i < line.len and line[i] notin {'#', ';'}:
if line[i] != ' ':
fourthcol &= line[i]
inc i
case status
of "mapped", "disallowed_STD3_mapped":
let codepoints = thirdcol
var str = ""
for code in codepoints:
str &= Rune(parseHexInt(code))
add(firstcol, str, add_map)
of "deviation":
let codepoints = thirdcol
var str = ""
for code in codepoints:
str &= Rune(parseHexInt(code))
add(firstcol, str, add_deviation)
of "valid":
if fourthcol == "NV8" or fourthcol == "XV8":
add(firstcol, add_disallow)
of "disallowed":
add(firstcol, add_disallow)
of "ignored":
add(firstcol, add_ignore)
when defined(release) or defined(small):
const (MappedMap,
DisallowedRanges,
Disallowed,
Ignored,
Deviation) = loadStuff(IdnaMappingTable)
else:
let (MappedMap,
DisallowedRanges,
Disallowed,
Ignored,
Deviation) = loadStuff(IdnaMappingTable)
func searchInMap[U, T](a: openarray[(U, T)], u: U): int =
binarySearch(a, u, (x, y) => cmp(x[0], y))
func isInMap[U, T](a: openarray[(U, T)], u: U): bool =
a.searchInMap(u) != -1
func isInRange[U](a: openarray[(U, U)], u: U): bool =
binarySearch(a, u, (x, y) => (if x[0] < y: -1 elif x[1] > y: 1 else: 0)) != -1
func getIdnaTableStatus*(r: Rune): IDNATableStatus =
let i = uint32(r)
{.cast(noSideEffect).}:
if i <= high(uint16):
let u = uint16(i)
if u in Ignored[0]:
return IDNA_IGNORED
if u in Disallowed[0]:
return IDNA_DISALLOWED
for item in Deviation:
if item[0] == u:
return IDNA_DEVIATION
if DisallowedRanges[0].isInRange(u):
return IDNA_DISALLOWED
if MappedMap[0].isInMap(u):
return IDNA_MAPPED
else:
if i in Ignored[1]:
return IDNA_IGNORED
if i in Disallowed[1]:
return IDNA_DISALLOWED
if DisallowedRanges[1].isInRange(i):
return IDNA_DISALLOWED
if MappedMap[1].isInMap(uint32(i)):
return IDNA_MAPPED
return IDNA_VALID
func getIdnaMapped*(r: Rune): string =
{.cast(noSideEffect).}:
let i = uint32(r)
if i <= high(uint16):
let u = uint16(i)
let n = MappedMap[0].searchInMap(u)
if n != -1:
return $MappedMap[0][n][1]
let n = MappedMap[1].searchInMap(i)
return $MappedMap[1][n][1]
func getDeviationMapped*(r: Rune): string =
{.cast(noSideEffect).}:
for item in Deviation:
if item[0] == uint16(r):
return $item[1]
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