README

Introduction

This library eases manipulation of text files in PHP by providing multiple methods to read / parse / write text files.

Installation

composer install michaelgarrez/text-file

Basics

Opening a file

<?php

$textFile = new TextFile('text_file.txt');

If text_file.txt file exists it will be opened otherwise it will be created.

Walking

WalkerInterface

All walking related operations are done by an instance of WalkerInterface (by default SimpleWalker). All following methods take an optional class that implements WalkerInterface to override the SimpleWalker.

Use

<?php

$textFile = new TextFile('text_file.txt');

// Move to a specific line

$textFile->goToLine(5); // This does not return the line content (See Reading).

// Count lines

$count = $textFile->countLines(5);

// Move before a specific character

$textFile->goBeforeCharacter(5); // This does not return the line content (See Reading).

Reading

ReadingInterface

All reading related operations are done by an instance of ReaderInterface (by default ReaderWalker).

ReaderInterface implementation needs a WalkerInterface implementation to work.

All following methods take two optional parameters :

• class that implements ReaderInterface to override the SimpleReader.
• class that implements WalkerInterface to override the SimpleWalker.

Use

All those methods reset the pointer to its previous position. In other words it does not move the internal pointer.

<?php

$textFile = new TextFile('text_file.txt');

// Getting lines range

$iterator = $textFile->getLinesRange(0, 5); // Returns an Iterator containing line content from a line to another

$textFile->goToLine(4);

// Getting current line content

$content = $textFile->getCurrentLineContent(); // Returns content of line 4

// Getting next line content

$content = $textFile->getNextLineContent(); // Returns content of line 5

// Getting previous line content

$content = $textFile->getPreviousLineContent(); // Returns content of line 3

// Getting specific line content

$content = $textFile->getLineContent(6); // Returns content of line 6

// Getting next character content

$character = $textFile->getNextCharacterContent(); // Returns next character after pointer position

// Getting previous character content

$character = $textFile->getNextCharacterContent(); // Returns previous character after pointer position

// Getting specific character content

$character = $textFile->getCharacterContent(7); // Returns 7 character from beginning of file

Writing

WritingInterface

All walking related operations are done by an instance of WriterInterface (by default PrependingWriter which will not erase while writing).

Another writer available is ErasingWriter which will erase the content while writing (same behaviour as Insert keyboard).

All following methods take an optional class that implements WriterInterface to override the PrependingWriter.

Use

<?php

$textFile = new TextFile('text_file.txt');

// Write without erasing without return line break at the end

$textFile->write('test');

// Write without erasing with return line break at the end

$textFile->write('test', true);

// Write with erasing without return line break at the end

$textFile->write('test', false, TextFile\Writer::class);

// Write with erasing with return line break at the end

$textFile->write('test', true, TextFile\Writer::class);