friendica-addons/tesseract/vendor/thiagoalessio/tesseract_ocr/src/Command.php

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2024-01-14 19:21:08 +00:00
<?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).'"';
}
}