TestFileReader.php

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<?php
class TestFileReader {
    private $file;
    private $fh;
    private $section = null;
    private $sectionData = [];
    private $sectionLineNum = [];
    private $lineNum = 0;
    private $runDisabled;
    private $runParsoid;
    private $regex;
 
    private $articles = [];
    private $requirements = [];
    private $tests = [];
 
    public static function read( $file, array $options = [] ) {
        $reader = new self( $file, $options );
        $reader->execute();
 
        $requirements = [];
        foreach ( $reader->requirements as $type => $reqsOfType ) {
            foreach ( $reqsOfType as $name => $unused ) {
                $requirements[] = [
                    'type' => $type,
                    'name' => $name
                ];
            }
        }
 
        return [
            'requirements' => $requirements,
            'tests' => $reader->tests,
            'articles' => $reader->articles
        ];
    }
 
    private function __construct( $file, $options ) {
        $this->file = $file;
        $this->fh = fopen( $this->file, "rt" );
 
        if ( !$this->fh ) {
            throw new MWException( "Couldn't open file '$file'\n" );
        }
 
        $options = $options + [
            'runDisabled' => false,
            'runParsoid' => false,
            'regex' => '//',
        ];
        $this->runDisabled = $options['runDisabled'];
        $this->runParsoid = $options['runParsoid'];
        $this->regex = $options['regex'];
    }
 
    private function addCurrentTest() {
        // "input" and "result" are old section names allowed
        // for backwards-compatibility.
        $input = $this->checkSection( [ 'wikitext', 'input' ], false );
        $nonTidySection = $this->checkSection(
            [ 'html/php', 'html/*', 'html', 'result' ], false );
        // Some tests have "with tidy" and "without tidy" variants
        $tidySection = $this->checkSection( [ 'html/php+tidy', 'html+tidy' ], false );
 
        // Remove trailing newline
        $data = array_map( 'ParserTestRunner::chomp', $this->sectionData );
 
        // Apply defaults
        $data += [
            'options' => '',
            'config' => ''
        ];
 
        if ( $input === false ) {
            throw new MWException( "Test at {$this->file}:{$this->sectionLineNum['test']} " .
                "lacks input section" );
        }
 
        if ( preg_match( '/\\bdisabled\\b/i', $data['options'] ) && !$this->runDisabled ) {
            // Disabled
            return;
        }
 
        if ( $tidySection === false && $nonTidySection === false ) {
            if ( isset( $data['html/parsoid'] ) || isset( $data['wikitext/edited'] ) ) {
                // Parsoid only
                return;
            } else {
                throw new MWException( "Test at {$this->file}:{$this->sectionLineNum['test']} " .
                    "lacks result section" );
            }
        }
 
        if ( preg_match( '/\\bparsoid\\b/i', $data['options'] ) && $nonTidySection === 'html'
            && !$this->runParsoid
        ) {
            // A test which normally runs on Parsoid but can optionally be run with MW
            return;
        }
 
        if ( !preg_match( $this->regex, $data['test'] ) ) {
            // Filtered test
            return;
        }
 
        $commonInfo = [
            'test' => $data['test'],
            'desc' => $data['test'],
            'input' => $data[$input],
            'options' => $data['options'],
            'config' => $data['config'],
        ];
 
        if ( $nonTidySection !== false ) {
            // Add non-tidy test
            $this->tests[] = [
                'result' => $data[$nonTidySection],
            ] + $commonInfo;
 
            if ( $tidySection !== false ) {
                // Add tidy subtest
                $this->tests[] = [
                    'desc' => $data['test'] . ' (with tidy)',
                    'result' => $data[$tidySection],
                    'options' => $data['options'] . ' tidy',
                ] + $commonInfo;
            }
        } elseif ( $tidySection !== false ) {
            // No need to override desc when there is no subtest
            $this->tests[] = [
                'result' => $data[$tidySection],
                'options' => $data['options'] . ' tidy'
            ] + $commonInfo;
        } else {
            throw new MWException( "Test at {$this->file}:{$this->sectionLineNum['test']} " .
                "lacks result section" );
        }
    }
 
    private function execute() {
        while ( false !== ( $line = fgets( $this->fh ) ) ) {
            $this->lineNum++;
            $matches = [];
 
            if ( preg_match( '/^!!\s*(\S+)/', $line, $matches ) ) {
                $this->section = strtolower( $matches[1] );
 
                if ( $this->section == 'endarticle' ) {
                    $this->checkSection( 'text' );
                    $this->checkSection( 'article' );
 
                    $this->addArticle(
                        ParserTestRunner::chomp( $this->sectionData['article'] ),
                        $this->sectionData['text'], $this->lineNum );
 
                    $this->clearSection();
 
                    continue;
                }
 
                if ( $this->section == 'endhooks' ) {
                    $this->checkSection( 'hooks' );
 
                    foreach ( explode( "\n", $this->sectionData['hooks'] ) as $line ) {
                        $line = trim( $line );
 
                        if ( $line ) {
                            $this->addRequirement( 'hook', $line );
                        }
                    }
 
                    $this->clearSection();
 
                    continue;
                }
 
                if ( $this->section == 'endfunctionhooks' ) {
                    $this->checkSection( 'functionhooks' );
 
                    foreach ( explode( "\n", $this->sectionData['functionhooks'] ) as $line ) {
                        $line = trim( $line );
 
                        if ( $line ) {
                            $this->addRequirement( 'functionHook', $line );
                        }
                    }
 
                    $this->clearSection();
 
                    continue;
                }
 
                if ( $this->section == 'endtransparenthooks' ) {
                    $this->checkSection( 'transparenthooks' );
 
                    foreach ( explode( "\n", $this->sectionData['transparenthooks'] ) as $line ) {
                        $line = trim( $line );
 
                        if ( $line ) {
                            $this->addRequirement( 'transparentHook', $line );
                        }
                    }
 
                    $this->clearSection();
 
                    continue;
                }
 
                if ( $this->section == 'end' ) {
                    $this->checkSection( 'test' );
                    $this->addCurrentTest();
                    $this->clearSection();
                    continue;
                }
 
                if ( isset( $this->sectionData[$this->section] ) ) {
                    throw new MWException( "duplicate section '$this->section' "
                        . "at line {$this->lineNum} of $this->file\n" );
                }
 
                $this->sectionLineNum[$this->section] = $this->lineNum;
                $this->sectionData[$this->section] = '';
 
                continue;
            }
 
            if ( $this->section ) {
                $this->sectionData[$this->section] .= $line;
            }
        }
    }
 
    private function clearSection() {
        $this->sectionLineNum = [];
        $this->sectionData = [];
        $this->section = null;
 
    }
 
    private function checkSection( $tokens, $fatal = true ) {
        if ( is_null( $this->section ) ) {
            throw new MWException( __METHOD__ . " can not verify a null section!\n" );
        }
        if ( !is_array( $tokens ) ) {
            $tokens = [ $tokens ];
        }
        if ( count( $tokens ) == 0 ) {
            throw new MWException( __METHOD__ . " can not verify zero sections!\n" );
        }
 
        $data = $this->sectionData;
        $tokens = array_filter( $tokens, function ( $token ) use ( $data ) {
            return isset( $data[$token] );
        } );
 
        if ( count( $tokens ) == 0 ) {
            if ( !$fatal ) {
                return false;
            }
            throw new MWException( sprintf(
                "'%s' without '%s' at line %s of %s\n",
                $this->section,
                implode( ',', $tokens ),
                $this->lineNum,
                $this->file
            ) );
        }
        if ( count( $tokens ) > 1 ) {
            throw new MWException( sprintf(
                "'%s' with unexpected tokens '%s' at line %s of %s\n",
                $this->section,
                implode( ',', $tokens ),
                $this->lineNum,
                $this->file
            ) );
        }
 
        return array_values( $tokens )[0];
    }
 
    private function addArticle( $name, $text, $line ) {
        $this->articles[] = [
            'name' => $name,
            'text' => $text,
            'line' => $line,
            'file' => $this->file
        ];
    }
 
    private function addRequirement( $type, $name ) {
        $this->requirements[$type][$name] = true;
    }
}