编辑文件 - Command.php

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路径: /srv/systems_dir/yuppiecred/vendor/thiagoalessio/tesseract_ocr/src/Command.php
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<?php namespace thiagoalessio\TesseractOCR;

class Command
{
	public $executable = 'tesseract';
	public $useFileAsInput = true;
	public $useFileAsOutput = true;
	public $options = array();
	public $configFile;
	public $tempDir;
	public $threadLimit;
	public $image;
	public $imageSize;
	private $outputFile;

public function __construct($image=null, $outputFile=null)
	{
		$this->image = $image;
		$this->outputFile = $outputFile;
	}

public function build() { return "$this"; }

public function __toString()
	{
		$cmd = array();
		if ($this->threadLimit) $cmd[] = "OMP_THREAD_LIMIT={$this->threadLimit}";
		$cmd[] = self::escape($this->executable);
		$cmd[] = $this->useFileAsInput ? self::escape($this->image) : "-";
		$cmd[] = $this->useFileAsOutput ? self::escape($this->getOutputFile(false)) : "-";

$version = $this->getTesseractVersion();

foreach ($this->options as $option) {
			$cmd[] = is_callable($option) ? $option($version) : "$option";
		}
		if ($this->configFile) $cmd[] = $this->configFile;

return join(' ', $cmd);
	}

public function getOutputFile($withExt=true)
	{
		if (!$this->outputFile)
			$this->outputFile = $this->getTempDir()
				.DIRECTORY_SEPARATOR
				.basename(tempnam($this->getTempDir(), 'ocr'));
		if (!$withExt) return $this->outputFile;

$hasCustomExt = array('hocr', 'tsv', 'pdf');
		$ext = in_array($this->configFile, $hasCustomExt) ? $this->configFile : 'txt';
		return "{$this->outputFile}.{$ext}";
	}

public function getTempDir()
	{
		return $this->tempDir ?: sys_get_temp_dir();
	}

public function getTesseractVersion()
	{
		exec(self::escape($this->executable).' --version 2>&1', $output);
		$outputParts = explode(' ', $output[0]);
		return $outputParts[1];
	}

public function getAvailableLanguages()
	{
		exec(self::escape($this->executable) . ' --list-langs 2>&1', $output);
		array_shift($output);
		sort($output);
		return $output;
	}

public static function escape($str)
	{
		$charlist = strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' ? '$"`' : '$"\\`';
		return '"'.addcslashes($str, $charlist).'"';
	}
}

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