206 lines
6.8 KiB
PHP
206 lines
6.8 KiB
PHP
<?php
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/* $Id: read_dump.lib.php,v 2.11 2006/01/17 17:02:30 cybot_tm Exp $ */
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// vim: expandtab sw=4 ts=4 sts=4:
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/**
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* Removes comment lines and splits up large sql files into individual queries
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*
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* Last revision: September 23, 2001 - gandon
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*
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* @param array the splitted sql commands
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* @param string the sql commands
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* @param integer the MySQL release number (because certains php3 versions
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* can't get the value of a constant from within a function)
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*
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* @return boolean always true
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*
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* @access public
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*/
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function PMA_splitSqlFile(&$ret, $sql, $release)
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{
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// do not trim, see bug #1030644
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//$sql = trim($sql);
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$sql = rtrim($sql, "\n\r");
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$sql_len = strlen($sql);
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$char = '';
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$string_start = '';
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$in_string = FALSE;
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$nothing = TRUE;
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$time0 = time();
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for ($i = 0; $i < $sql_len; ++$i) {
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$char = $sql[$i];
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// We are in a string, check for not escaped end of strings except for
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// backquotes that can't be escaped
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if ($in_string) {
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for (;;) {
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$i = strpos($sql, $string_start, $i);
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// No end of string found -> add the current substring to the
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// returned array
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if (!$i) {
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$ret[] = array('query' => $sql, 'empty' => $nothing);
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return TRUE;
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}
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// Backquotes or no backslashes before quotes: it's indeed the
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// end of the string -> exit the loop
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elseif ($string_start == '`' || $sql[$i-1] != '\\') {
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$string_start = '';
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$in_string = FALSE;
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break;
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}
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// one or more Backslashes before the presumed end of string...
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else {
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// ... first checks for escaped backslashes
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$j = 2;
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$escaped_backslash = FALSE;
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while ($i-$j > 0 && $sql[$i-$j] == '\\') {
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$escaped_backslash = !$escaped_backslash;
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$j++;
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}
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// ... if escaped backslashes: it's really the end of the
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// string -> exit the loop
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if ($escaped_backslash) {
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$string_start = '';
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$in_string = FALSE;
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break;
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}
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// ... else loop
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else {
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$i++;
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}
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} // end if...elseif...else
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} // end for
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} // end if (in string)
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// lets skip comments (/*, -- and #)
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elseif (($char == '-' && $sql_len > $i + 2 && $sql[$i + 1] == '-' && $sql[$i + 2] <= ' ') || $char == '#' || ($char == '/' && $sql_len > $i + 1 && $sql[$i + 1] == '*')) {
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$i = strpos($sql, $char == '/' ? '*/' : "\n", $i);
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// didn't we hit end of string?
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if ($i === FALSE) {
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break;
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}
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if ($char == '/') {
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$i++;
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}
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}
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// We are not in a string, first check for delimiter...
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elseif ($char == ';') {
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// if delimiter found, add the parsed part to the returned array
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$ret[] = array('query' => substr($sql, 0, $i), 'empty' => $nothing);
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$nothing = TRUE;
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$sql = ltrim(substr($sql, min($i + 1, $sql_len)));
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$sql_len = strlen($sql);
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if ($sql_len) {
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$i = -1;
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} else {
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// The submited statement(s) end(s) here
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return TRUE;
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}
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} // end elseif (is delimiter)
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// ... then check for start of a string,...
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elseif (($char == '"') || ($char == '\'') || ($char == '`')) {
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$in_string = TRUE;
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$nothing = FALSE;
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$string_start = $char;
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} // end elseif (is start of string)
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elseif ($nothing) {
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$nothing = FALSE;
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}
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// loic1: send a fake header each 30 sec. to bypass browser timeout
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$time1 = time();
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if ($time1 >= $time0 + 30) {
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$time0 = $time1;
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header('X-pmaPing: Pong');
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} // end if
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} // end for
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// add any rest to the returned array
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if (!empty($sql) && preg_match('@[^[:space:]]+@', $sql)) {
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$ret[] = array('query' => $sql, 'empty' => $nothing);
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}
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return TRUE;
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} // end of the 'PMA_splitSqlFile()' function
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/**
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* Reads (and decompresses) a (compressed) file into a string
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*
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* @param string the path to the file
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* @param string the MIME type of the file, if empty MIME type is autodetected
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*
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* @global array the phpMyAdmin configuration
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*
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* @return string the content of the file or
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* boolean FALSE in case of an error.
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*/
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function PMA_readFile($path, $mime = '') {
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global $cfg;
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if (!file_exists($path)) {
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return FALSE;
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}
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switch ($mime) {
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case '':
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$file = @fopen($path, 'rb');
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if (!$file) {
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return FALSE;
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}
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$test = fread($file, 3);
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fclose($file);
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if ($test[0] == chr(31) && $test[1] == chr(139)) {
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return PMA_readFile($path, 'application/x-gzip');
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}
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if ($test == 'BZh') {
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return PMA_readFile($path, 'application/x-bzip');
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}
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return PMA_readFile($path, 'text/plain');
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case 'text/plain':
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$file = @fopen($path, 'rb');
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if (!$file) {
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return FALSE;
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}
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$content = fread($file, filesize($path));
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fclose($file);
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break;
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case 'application/x-gzip':
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if ($cfg['GZipDump'] && @function_exists('gzopen')) {
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$file = @gzopen($path, 'rb');
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if (!$file) {
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return FALSE;
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}
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$content = '';
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while (!gzeof($file)) {
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$content .= gzgetc($file);
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}
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gzclose($file);
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} else {
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return FALSE;
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}
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break;
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case 'application/x-bzip':
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if ($cfg['BZipDump'] && @function_exists('bzdecompress')) {
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$file = @fopen($path, 'rb');
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if (!$file) {
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return FALSE;
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}
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$content = fread($file, filesize($path));
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fclose($file);
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$content = bzdecompress($content);
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} else {
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return FALSE;
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}
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break;
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default:
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return FALSE;
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}
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return $content;
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}
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?>
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