classes-Com-Tecnick-Unicode-Bidi-StepN

It appears that you are using AdBlocking software. The cost of running this website is covered by advertisements. If you like it please feel free to a small amount of money to secure the future of this website.

Com\Tecnick\Unicode\Bidi\StepN

Tags
since
2015-07-13
category

Library

author

Nicola Asuni info@tecnick.com

copyright

2011-2015 Nicola Asuni - Tecnick.com LTD

license

http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)

link
https://github.com/tecnickcom/tc-lib-unicode

Table of Contents

$brackets  : array<string|int, mixed>
List or bracket pairs positions
$bstack  : array<string|int, mixed>
Stack used to store bracket positions
$seq  : array<string|int, mixed>
Sequence to process and return
__construct()  : mixed
Initialize Sequence to process
getSequence()  : array<string|int, mixed>
Returns the processed array
processStep()  : mixed
Generic step
getBracketPairs()  : mixed
BD16. Find all bracket pairs
getN0Type()  : string
Return the normalized chat type for the N0 step Within this scope, bidirectional types EN and AN are treated as R.
getNextN1Char()  : int
Return the index of the next valid char for N1
process()  : mixed
Process N steps Resolving Neutral and Isolate Formatting Types
processInsideBrackets()  : bool
Inspect the bidirectional types of the characters enclosed within the bracket pair.
processN0()  : mixed
N0. Process bracket pairs in an isolating run sequence sequentially in the logical order of the text positions of the opening paired brackets.
processN1()  : mixed
N1. A sequence of NIs takes the direction of the surrounding strong text if the text on both sides has the same direction. European and Arabic numbers act as if they were R in terms of their influence on NIs.
processN1next()  : string
Get the next direction
processN1prev()  : string
Get the next direction
processN2()  : mixed
N2. Any remaining NIs take the embedding direction.
setBracketsType()  : bool
Set the brackets type

Properties

$brackets

List or bracket pairs positions

protected array<string|int, mixed> $brackets = array()

$bstack

Stack used to store bracket positions

protected array<string|int, mixed> $bstack = array()

$seq

Sequence to process and return

protected array<string|int, mixed> $seq = array()

Methods

__construct()

Initialize Sequence to process

public __construct(array<string|int, mixed> $seq[, bool $process = true ]) : mixed
Parameters
$seq : array<string|int, mixed>

Isolated Sequence array

$process : bool = true

If false disable automatic processing (this is a testing flag)

Return values
mixed

getSequence()

Returns the processed array

public getSequence() : array<string|int, mixed>
Return values
array<string|int, mixed>

processStep()

Generic step

public processStep(string $method) : mixed
Parameters
$method : string

Processing methos

Return values
mixed

getBracketPairs()

BD16. Find all bracket pairs

protected getBracketPairs(mixed $idx) : mixed
Parameters
$idx : mixed
Return values
mixed

getN0Type()

Return the normalized chat type for the N0 step Within this scope, bidirectional types EN and AN are treated as R.

protected getN0Type(string $type) : string
Parameters
$type : string

Char type

Return values
string

getNextN1Char()

Return the index of the next valid char for N1

protected getNextN1Char(int $idx) : int
Parameters
$idx : int

Start index

Return values
int

process()

Process N steps Resolving Neutral and Isolate Formatting Types

protected process() : mixed

Neutral and isolate formatting (i.e. NI) characters are resolved one isolating run sequence at a time. Its results are that all NIs become either R or L. Generally, NIs take on the direction of the surrounding text. In case of a conflict, they take on the embedding direction. At isolating run sequence boundaries where the type of the character on the other side of the boundary is required, the type assigned to sos or eos is used.

Bracket pairs within an isolating run sequence are processed as units so that both the opening and the closing paired bracket in a pair resolve to the same direction. Note that this rule is applied based on the current bidirectional character type of each paired bracket and not the original type, as this could have changed under X6. The current bidirectional character type may also have changed under a previous iteration of the for loop in N0 in the case of nested bracket pairs.

Return values
mixed

processInsideBrackets()

Inspect the bidirectional types of the characters enclosed within the bracket pair.

protected processInsideBrackets(int $open, int $close, string $odir) : bool
Parameters
$open : int

Open bracket entry

$close : int

Close bracket entry

$odir : string

Opposite direction (L or R)

Return values
bool

True if type has not been found

processN0()

N0. Process bracket pairs in an isolating run sequence sequentially in the logical order of the text positions of the opening paired brackets.

protected processN0() : mixed
Return values
mixed

processN1()

N1. A sequence of NIs takes the direction of the surrounding strong text if the text on both sides has the same direction. European and Arabic numbers act as if they were R in terms of their influence on NIs.

protected processN1(int $idx) : mixed

The start-of-sequence (sos) and end-of-sequence (eos) types are used at isolating run sequence boundaries.

Parameters
$idx : int

Current character position

Return values
mixed

processN1next()

Get the next direction

protected processN1next(int &$jdx) : string
Parameters
$jdx : int

Position of the next character

Return values
string

Previous position

processN1prev()

Get the next direction

protected processN1prev(int &$bdx) : string
Parameters
$bdx : int

Position of the preceding character

Return values
string

Previous position

processN2()

N2. Any remaining NIs take the embedding direction.

protected processN2(int $idx) : mixed
Parameters
$idx : int

Current character position

Return values
mixed

setBracketsType()

Set the brackets type

protected setBracketsType(int $open, int $close, string $type) : bool
Parameters
$open : int

Open bracket entry

$close : int

Close bracket entry

$type : string

Type

Return values
bool

True if type has not been found

 

© 2004-2021 – Nicola Asuni - Tecnick.com - All rights reserved.
about - disclaimer - privacy