121 lines
3.2 KiB
PHP
121 lines
3.2 KiB
PHP
<?php namespace thiagoalessio\TesseractOCR;
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class FriendlyErrors
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{
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public static function checkImagePath($image)
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{
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if (file_exists($image)) return;
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$currentDir = __DIR__;
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$msg = array();
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$msg[] = "Error! The image \"$image\" was not found.";
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$msg[] = '';
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$msg[] = "The current __DIR__ is $currentDir";
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$msg = join(PHP_EOL, $msg);
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throw new ImageNotFoundException($msg);
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}
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public static function checkTesseractPresence($executable)
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{
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if (file_exists($executable)) return;
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$cmd = stripos(PHP_OS, 'win') === 0
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? 'where.exe '.Command::escape($executable).' > NUL 2>&1'
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: 'type '.Command::escape($executable).' > /dev/null 2>&1';
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system($cmd, $exitCode);
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if ($exitCode == 0) return;
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$currentPath = getenv('PATH');
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$msg = array();
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$msg[] = "Error! The command \"$executable\" was not found.";
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$msg[] = '';
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$msg[] = 'Make sure you have Tesseract OCR installed on your system:';
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$msg[] = 'https://github.com/tesseract-ocr/tesseract';
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$msg[] = '';
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$msg[] = "The current \$PATH is $currentPath";
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$msg = join(PHP_EOL, $msg);
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throw new TesseractNotFoundException($msg);
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}
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public static function checkCommandExecution($command, $stdout, $stderr)
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{
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if ($command->useFileAsOutput) {
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$file = $command->getOutputFile();
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if (file_exists($file) && filesize($file) > 0) return;
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}
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if (!$command->useFileAsOutput && $stdout) {
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return;
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}
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$msg = array();
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$msg[] = 'Error! The command did not produce any output.';
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$msg[] = '';
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$msg[] = 'Generated command:';
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$msg[] = "$command";
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$msg[] = '';
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$msg[] = 'Returned message:';
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$arrayStderr = explode(PHP_EOL, $stderr);
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array_pop($arrayStderr);
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$msg = array_merge($msg, $arrayStderr);
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$msg = join(PHP_EOL, $msg);
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throw new UnsuccessfulCommandException($msg);
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}
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public static function checkProcessCreation($processHandle, $command)
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{
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if ($processHandle !== FALSE) return;
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$msg = array();
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$msg[] = 'Error! The command could not be launched.';
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$msg[] = '';
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$msg[] = 'Generated command:';
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$msg[] = "$command";
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$msg = join(PHP_EOL, $msg);
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throw new UnsuccessfulCommandException($msg);
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}
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public static function checkTesseractVersion($expected, $action, $command)
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{
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$actual = $command->getTesseractVersion();
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if ($actual[0] === 'v')
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$actual = substr($actual, 1);
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if (version_compare($actual, $expected, ">=")) return;
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$msg = array();
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$msg[] = "Error! $action is not available this tesseract version";
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$msg[] = "Required version is $expected, actual version is $actual";
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$msg[] = '';
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$msg[] = 'Generated command:';
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$msg[] = "$command";
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$msg = join(PHP_EOL, $msg);
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throw new FeatureNotAvailableException($msg);
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}
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public static function checkWritePermissions($path)
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{
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if (!is_dir(dirname($path))) mkdir(dirname($path));
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$writableDirectory = is_writable(dirname($path));
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$writableFile = true;
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if (file_exists($path)) $writableFile = is_writable($path);
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if ($writableFile && $writableDirectory) return;
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$msg = array();
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$msg[] = "Error! No permission to write to $path";
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$msg[] = "Make sure you have the right outputFile and permissions "
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."to write to the folder";
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$msg[] = '';
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$msg = join(PHP_EOL, $msg);
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throw new NoWritePermissionsForOutputFile($msg);
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}
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}
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