Changelog - Version 6.0

Overview

Version 6.0 brings improved type safety, enhanced validation, better error handling, and comprehensive documentation to the Text File Abstraction Dataset library.

New Features

Enhanced Type Safety

• Improved type declarations throughout the codebase for better IDE support and static analysis
• Added proper return type hints and parameter types to all methods
• Enhanced PHPStan/Psalm compatibility with stricter type checking

Better Validation and Error Handling

• Added URL validation in FixedTextFileDataset to prevent invalid URL formats
• Added field definition validation to ensure definitions are properly set before iteration
• Improved error messages for invalid subtype configurations
• Enhanced buffer processing with better edge case handling

Comprehensive Documentation

• Added dedicated documentation for TextFileDataset (docs/TextFileDataset)
• Added dedicated documentation for FixedTextFileDataset (docs/FixedTextFileDataset)
• Added dedicated documentation for FixedTextDefinition (docs/FixedTextDefinition)
• Added dedicated documentation for Formatters (docs/Formatters)
• Updated README with clearer examples and structure

Improved Iterator Implementation

• Refactored iterators to use modern PHP Iterator interface methods
• Changed from moveNext()/hasNext() pattern to standard current()/next()/valid() pattern
• Better resource management with proper handle cleanup
• Enhanced iteration state management

Development Experience

• Added composer scripts for testing and psalm analysis
• Updated GitHub Actions workflows with better PHP version matrix
• Added PHPStorm run configurations (.run/PHPUnit.run.xml, .run/psalm.run.xml)
• Updated Gitpod configuration for better development experience

Breaking Changes

Area	Before (5.x)	After (6.x)	Description
PHP Version	PHP 8.1 - 8.3	PHP 8.3 - 8.5	Minimum PHP version increased to 8.3
Dependencies	byjg/anydataset: ^5.0	byjg/anydataset: ^6.0	Updated to anydataset 6.0
PHPUnit	PHPUnit 9.6	PHPUnit 10.5 or 11.5	Updated to modern PHPUnit versions
Psalm	Psalm 6.0	Psalm 5.9 or 6.13	Expanded Psalm version support
Iterator Interface	Used moveNext() and hasNext() methods	Uses standard PHP Iterator methods (current(), next(), valid())	Iterators now follow standard PHP Iterator pattern
Row Class	Used Row class	Uses RowArray and RowInterface	More explicit row type handling
Null Handling	Less strict null checks	Stricter null validation with proper type hints	Better type safety may require code adjustments
Exception Handling	Less validation	Added InvalidArgumentException for missing field definitions	Code must ensure field definitions are set before iteration

Path to Upgrade from 5.x to 6.x

Step 1: Update System Requirements

Ensure your system meets the new requirements:

• Upgrade to PHP 8.3 or higher
• Update Composer dependencies

Step 2: Update composer.json

{
  "require": {
    "php": ">=8.3",
    "byjg/anydataset-text": "^6.0"
  }
}

Step 3: Run Composer Update

composer update byjg/anydataset-text

This will automatically update the byjg/anydataset dependency to version 6.0.

Step 4: Update Iterator Usage (If Using Custom Code)

If you extended the iterator classes or called iterator methods directly:

Before (5.x):

$iterator = $dataset->getIterator();
while ($iterator->hasNext()) {
    $row = $iterator->moveNext();
    // Process row
}

After (6.x):

$iterator = $dataset->getIterator();
foreach ($iterator as $row) {
    // Process row
}
// Or using standard Iterator methods:
while ($iterator->valid()) {
    $row = $iterator->current();
    // Process row
    $iterator->next();
}

Step 5: Add Field Definition Validation

Ensure field definitions are set before calling getIterator():

Before (5.x):

$dataset = new FixedTextFileDataset($file);
// May have worked without setting field definition
$iterator = $dataset->getIterator();

After (6.x):

$dataset = new FixedTextFileDataset($file);
$dataset->withFieldDefinition($fieldDefinition); // Required!
$iterator = $dataset->getIterator();

Step 6: Update Type Hints (If Applicable)

If you have type hints referencing iterator classes:

// Before
function processIterator(GenericIterator $iterator) { }

// After - no change needed for basic usage, but be aware of stricter types
function processIterator(GenericIterator $iterator): void { }

Step 7: Test Your Application

Run your test suite to ensure everything works correctly:

vendor/bin/phpunit

Step 8: Update Static Analysis (If Used)

If you use Psalm or PHPStan, you may need to update your configuration to handle the stricter type declarations:

vendor/bin/psalm

Bug Fixes

• Fixed CSV formatter handling of edge cases with quotes and delimiters
• Fixed resource handle cleanup in iterators
• Fixed subtype key casting issues in fixed-width file parsing
• Improved preg_split error handling with proper false checks

Additional Notes

• The library maintains backward compatibility for most common use cases (simple foreach iteration)
• Breaking changes primarily affect direct Iterator API usage and PHP version requirements
• All changes improve type safety and reduce potential runtime errors
• The migration path is straightforward for standard usage patterns