Swift_CharacterReader_Utf8Reader
in package
implements
Swift_CharacterReader
Analyzes UTF-8 characters.
Tags
Interfaces, Classes and Traits
- Swift_CharacterReader
- Analyzes characters for a specific character set.
Table of Contents
- $length_map : mixed
- Pre-computed for optimization
- $s_length_map : mixed
- getCharPositions() : int
- Returns the complete character map.
- getInitialByteSize() : int
- Returns the number of bytes which should be read to start each character.
- getMapType() : int
- Returns mapType.
- validateByteSequence() : int
- Returns an integer which specifies how many more bytes to read.
Properties
$length_map
Pre-computed for optimization
private
static mixed
$length_map
= [
// N=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x0N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x1N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x2N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x3N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x4N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x5N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x6N
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 0x7N
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
// 0x8N
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
// 0x9N
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
// 0xAN
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
// 0xBN
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
// 0xCN
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
// 0xDN
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
// 0xEN
4,
4,
4,
4,
4,
4,
4,
4,
5,
5,
5,
5,
6,
6,
0,
0,
]
$s_length_map
private
static mixed
$s_length_map
= [" " => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, " " => 1, "
" => 1, " " => 1, " " => 1, "
" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, "" => 1, " " => 1, " " => 1, " " => 1, " " => 1, " " => 1, "!" => 1, """ => 1, "#" => 1, "$" => 1, "%" => 1, "&" => 1, "'" => 1, "(" => 1, ")" => 1, "*" => 1, "+" => 1, "," => 1, "-" => 1, "." => 1, "/" => 1, "0" => 1, "1" => 1, "2" => 1, "3" => 1, "4" => 1, "5" => 1, "6" => 1, "7" => 1, "8" => 1, "9" => 1, ":" => 1, ";" => 1, "<" => 1, "=" => 1, ">" => 1, "?" => 1, "@" => 1, "A" => 1, "B" => 1, "C" => 1, "D" => 1, "E" => 1, "F" => 1, "G" => 1, "H" => 1, "I" => 1, "J" => 1, "K" => 1, "L" => 1, "M" => 1, "N" => 1, "O" => 1, "P" => 1, "Q" => 1, "R" => 1, "S" => 1, "T" => 1, "U" => 1, "V" => 1, "W" => 1, "X" => 1, "Y" => 1, "Z" => 1, "[" => 1, "\" => 1, "]" => 1, "^" => 1, "_" => 1, "`" => 1, "a" => 1, "b" => 1, "c" => 1, "d" => 1, "e" => 1, "f" => 1, "g" => 1, "h" => 1, "i" => 1, "j" => 1, "k" => 1, "l" => 1, "m" => 1, "n" => 1, "o" => 1, "p" => 1, "q" => 1, "r" => 1, "s" => 1, "t" => 1, "u" => 1, "v" => 1, "w" => 1, "x" => 1, "y" => 1, "z" => 1, "{" => 1, "|" => 1, "}" => 1, "~" => 1, "" => 1, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 0, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 2, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 3, "�" => 4, "�" => 4, "�" => 4, "�" => 4, "�" => 4, "�" => 4, "�" => 4, "�" => 4, "�" => 5, "�" => 5, "�" => 5, "�" => 5, "�" => 6, "�" => 6, "�" => 0, "�" => 0]
Methods
getCharPositions()
Returns the complete character map.
public
getCharPositions(string $string, int $startOffset, array<string|int, mixed> &$currentMap, mixed &$ignoredChars) : int
Parameters
- $string : string
- $startOffset : int
- $currentMap : array<string|int, mixed>
- $ignoredChars : mixed
Return values
int —getInitialByteSize()
Returns the number of bytes which should be read to start each character.
public
getInitialByteSize() : int
Return values
int —getMapType()
Returns mapType.
public
getMapType() : int
Return values
int —mapType
validateByteSequence()
Returns an integer which specifies how many more bytes to read.
public
validateByteSequence(string $bytes, int $size) : int
A positive integer indicates the number of more bytes to fetch before invoking this method again. A value of zero means this is already a valid character. A value of -1 means this cannot possibly be a valid character.
Parameters
- $bytes : string
- $size : int