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<?php |
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namespace PhpSqlReplacer; |
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use PhpSqlReplacer\Exceptions\SqlReplacerException; |
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use PhpSqlReplacer\External\Serialization; |
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/** |
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* PhpSqlReplacer - Main Driver Class |
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* @author gggordon |
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* @copyright gggordon 2020 |
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* @license MIT |
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*/ |
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class PhpSqlReplacer |
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{ |
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/** |
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* Extracts full record values and column names from insert statements within a file |
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* For eg. if the the record contains `'I like trading'` and `trading` is the pattern being matched |
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* `'I like trading'` will be extracted. |
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* |
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* @param string $filePath - Path to source file |
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* @param string $patternToMatchFor - Optional pattern to match for. Default: null |
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* @throws Exceptions\SqlReplacerException |
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* @param bool $includeColumnNames - Whether to include column names. Default:false |
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* @return string[] |
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*/ |
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public function extractSqlValuesFromFile($filePath, $patternToMatchFor=null, $includeColumnNames=false) |
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{ |
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if (!file_exists($filePath) || !is_string($filePath)) { |
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throw new SqlReplacerException("File '$filePath' does not exist"); |
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} |
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return $this->extractSqlValues( |
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file_get_contents($filePath), |
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$patternToMatchFor, |
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$includeColumnNames |
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); |
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} |
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/** |
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* Extracts full record values and column names from insert statements within a string |
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* For eg. if the the record contains `'I like trading'` and `trading` is the pattern being matched |
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* `'I like trading'` will be extracted. |
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* |
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* @param string $contents - SQL Contents to search |
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* @param string $patternToMatchFor - Optional pattern to match for. Default: null |
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* @throws Exceptions\SqlReplacerException |
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* @param bool $includeColumnNames - Whether to include column names. Default:false |
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* @return string[] |
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*/ |
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public function extractSqlValues($contents, $patternToMatchFor=null, $includeColumnNames=false) |
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{ |
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$tokens=[]; |
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if (preg_match_all("/\(.*\)/U", $contents, $matches)) { |
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$tokens=$matches[0]; |
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} |
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$tokens = array_filter($tokens, function ($token) { |
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return $token[0]=="(" && $token[strlen($token)-1]==")"; |
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}); |
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$tokens = array_map(function ($piece) use ($includeColumnNames) { |
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$piece = trim(trim($piece, "("), ")"); |
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$pieces = explode(",", $piece); |
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$pieces= array_filter(array_map('trim', $pieces), function ($p) { |
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return !empty($p) && strlen($p)>0; |
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}); |
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$pieces = array_values($pieces); |
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if (!$includeColumnNames && count($pieces)>0) { |
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$firstPiece = $pieces[0]; |
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if ($firstPiece[0] != "'" && |
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$firstPiece[0] != "\"" && |
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preg_match("/[a-zA-Z]/", $firstPiece[0]) |
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) { |
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return []; |
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} |
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} |
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return $pieces; |
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}, $tokens); |
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$matches = []; |
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array_walk_recursive($tokens, function ($value) use (&$matches,$patternToMatchFor) { |
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if ($patternToMatchFor===null || |
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stripos($value, $patternToMatchFor) !== false) { |
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$matches[]=$value; |
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} |
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}); |
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return $matches; |
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} |
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/** |
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* Safely (including managing serialized data) replaces matched string patterns in a string |
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* |
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* @param string $contents - String to search |
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* @param string $value - Value to replace |
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* @param string $replaceWith - Value to replace with |
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* @return string Updated Contents |
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*/ |
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public function replaceValue($contents, $value, $replaceWith) |
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{ |
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set_error_handler(function ($errno, $errstr, $errfile, $errline) { |
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throw new \ErrorException($errstr, $errno, 0, $errfile, $errline); |
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}); |
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$matches = $this->extractSqlValues($contents, $value); |
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foreach ($matches as $match) { |
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$matchWithoutQuotes = str_replace("\\\"", "\"", trim(trim($match, "'"))); |
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if (Serialization::isSerializedValue($matchWithoutQuotes)) { |
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$matchReplaced = str_replace($value, $replaceWith, $matchWithoutQuotes); |
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$matchReplaced = preg_replace_callback('!s:(\d+):"(.*?)";!', function ($match) { |
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return ($match[1] == strlen($match[2])) ? $match[0] : 's:' . strlen($match[2]) . ':"' . $match[2] . '";'; |
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}, $matchReplaced); |
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try { |
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unserialize($matchReplaced); |
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} catch (\Exception $e) { |
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//silently ignore |
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continue; |
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} |
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$matchReplaced = "'$matchReplaced'"; |
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} else { |
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$matchReplaced = str_replace($value, $replaceWith, $match); |
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} |
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$contents = str_replace($match, $matchReplaced, $contents); |
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} |
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$contents=str_replace($value, $replaceWith, $contents); |
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restore_error_handler(); |
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return $contents; |
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} |
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/** |
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* Safely (including managing serialized data) replaces matched string patterns in a file and optionally saves to another file |
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* |
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* @param string $sourceFile - Source file to search |
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* @param string $value - Value to replace |
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* @param string $replaceWith - Value to replace with |
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* @param string $destinationFile - Destination file to write to |
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* @throws Exceptions\SqlReplacerException |
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* @return string Updated Contents |
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*/ |
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public function replaceValueFromFile($sourceFile, $value, $replaceWith, $destinationFile=null) |
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{ |
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if (!file_exists($sourceFile) || !is_string($sourceFile)) { |
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throw new SqlReplacerException("Source File '$sourceFile' does not exist"); |
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} |
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if (is_null($destinationFile) || !is_string($sourceFile)) { |
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throw new SqlReplacerException("Destination File '$destinationFile' is required"); |
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} |
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$contents = $this->replaceValue( |
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file_get_contents($sourceFile), |
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$value, |
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$replaceWith |
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); |
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if ($destinationFile) { |
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file_put_contents($destinationFile, $contents); |
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} |
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return $contents; |
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} |
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} |
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