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<?php |
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namespace Ottosmops\Pdftothumb; |
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use Symfony\Component\Process\Process; |
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use Ottosmops\Pdftothumb\Exceptions\CouldNotConvertPdf; |
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use Ottosmops\Pdftothumb\Exceptions\FileNotFound; |
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use Ottosmops\Pdftothumb\Exceptions\BinaryNotFound; |
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use Ottosmops\Pdftothumb\Exceptions\FileFormatNotAllowed; |
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class Converter |
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{ |
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public $executable = ''; |
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protected $options = []; |
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protected $source = ''; |
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protected $target = ''; |
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protected $extension = ''; |
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// cf https://www.systutorials.com/docs/linux/man/1-pdftoppm/ |
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public $exitCodes = [ |
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0 => 'No error.', |
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1 => 'Error opening a PDF file.', |
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2 => 'Error opening an output file.', |
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3 => 'Error related to PDF permissions.', |
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99 => 'Other error.' |
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]; |
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public function __construct(string $source, string $target = '', $executable = '') |
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{ |
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$this->executable = $executable ? $executable : 'pdftoppm'; |
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$this->format('jpeg'); |
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$this->extension('jpg'); |
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$this->page(1); |
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$this->scaleTo(150); |
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$this->source($source); |
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if (!is_file($source)) { |
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throw new FileNotFound("could not find pdf {$source}"); |
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} |
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if (!$target) { |
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$this->target = pathinfo($this->source, PATHINFO_DIRNAME).'/'.pathinfo($this->source, PATHINFO_FILENAME); |
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} else { |
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$this->target($target); |
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} |
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} |
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public static function create(string $source, string $target = '', string $executable = '') |
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{ |
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return (new static($source, $target, $executable)); |
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} |
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public function executable(string $executable) |
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{ |
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$this->executable = $executable; |
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return $this; |
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} |
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protected function source(string $source) |
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{ |
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$this->source = $source; |
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return $this; |
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} |
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public function target(string $target = null) |
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{ |
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$this->target = pathinfo($target, PATHINFO_DIRNAME) . '/' . pathinfo($target, PATHINFO_FILENAME); |
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return $this; |
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} |
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public function scaleTo(int $scaleTo) |
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{ |
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$this->options['scale-to'] = '-scale-to ' . (string) $scaleTo; |
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return $this; |
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} |
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public function firstPage(int $firstPage) |
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{ |
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$this->options['firstPage'] = '-f ' . (string) $firstPage; |
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return $this; |
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} |
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public function lastPage(int $lastPage) |
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{ |
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$this->options['lastPage'] = '-l ' . (string) $lastPage; |
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return $this; |
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} |
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public function page(int $page) |
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{ |
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$this->firstPage($page); |
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$this->lastPage($page); |
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return $this; |
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} |
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public function format(string $format) |
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{ |
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$this->options['format'] = '-' . $this->normalizeFormat($format); |
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$this->actualizeExtension(); |
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return $this; |
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} |
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protected function actualizeExtension() |
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{ |
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$this->options['format'] == '-jpeg' && $this->extension('jpg'); |
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$this->options['format'] == '-tiff' && $this->extension('tif'); |
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$this->options['format'] == '-png' && $this->extension('png'); |
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} |
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protected function normalizeFormat(string $format) |
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{ |
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$format = strtolower($format); |
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$format = $format == 'jpg' ? 'jpeg' : $format; |
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$format = $format == 'tif' ? 'tiff' : $format; |
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$formats = ['jpeg', 'png', 'tiff']; |
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if (!in_array($format, $formats)) { |
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throw new FileFormatNotAllowed("fileformat not allowed {$format}"); |
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} |
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return $format; |
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} |
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protected function extension($extension = null) |
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{ |
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$this->extension = $extension; |
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return $this; |
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} |
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public function addOption(string $options) |
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{ |
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$this->options[] = $options; |
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return $this; |
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} |
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public function setOptions(string $options) |
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{ |
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$this->options = [$options]; |
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return $this; |
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} |
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public function command() |
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{ |
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$options = join(' ', $this->options); |
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$command = "{$this->executable} {$options} '{$this->source}' > '{$this->target}.{$this->extension}'"; |
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return $command; |
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} |
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/** |
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* extract text |
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* @return string |
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*/ |
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public function convert() |
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{ |
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$process = Process::fromShellCommandline($this->command()); |
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$process->run(); |
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if (!$process->isSuccessful()) { |
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throw new CouldNotConvertPdf($process); |
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} |
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return $process->getExitCode(); |
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} |
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} |
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ottosmops /
pdftothumb
