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- <?php
- /* $Id: read_dump.lib.php,v 2.10 2004/10/19 12:49:21 nijel Exp $ */
- // vim: expandtab sw=4 ts=4 sts=4:
-
- /**
- * Removes comment lines and splits up large sql files into individual queries
- *
- * Last revision: September 23, 2001 - gandon
- *
- * @param array the splitted sql commands
- * @param string the sql commands
- * @param integer the MySQL release number (because certains php3 versions
- * can't get the value of a constant from within a function)
- *
- * @return boolean always true
- *
- * @access public
- */
- function PMA_splitSqlFile(&$ret, $sql, $release)
- {
- // do not trim, see bug #1030644
- //$sql = trim($sql);
- $sql = rtrim($sql, "\n\r");
- $sql_len = strlen($sql);
- $char = '';
- $string_start = '';
- $in_string = FALSE;
- $nothing = TRUE;
- $time0 = time();
-
- for ($i = 0; $i < $sql_len; ++$i) {
- $char = $sql[$i];
-
- // We are in a string, check for not escaped end of strings except for
- // backquotes that can't be escaped
- if ($in_string) {
- for (;;) {
- $i = strpos($sql, $string_start, $i);
- // No end of string found -> add the current substring to the
- // returned array
- if (!$i) {
- $ret[] = array('query' => $sql, 'empty' => $nothing);
- return TRUE;
- }
- // Backquotes or no backslashes before quotes: it's indeed the
- // end of the string -> exit the loop
- else if ($string_start == '`' || $sql[$i-1] != '\\') {
- $string_start = '';
- $in_string = FALSE;
- break;
- }
- // one or more Backslashes before the presumed end of string...
- else {
- // ... first checks for escaped backslashes
- $j = 2;
- $escaped_backslash = FALSE;
- while ($i-$j > 0 && $sql[$i-$j] == '\\') {
- $escaped_backslash = !$escaped_backslash;
- $j++;
- }
- // ... if escaped backslashes: it's really the end of the
- // string -> exit the loop
- if ($escaped_backslash) {
- $string_start = '';
- $in_string = FALSE;
- break;
- }
- // ... else loop
- else {
- $i++;
- }
- } // end if...elseif...else
- } // end for
- } // end if (in string)
-
- // lets skip comments (/*, -- and #)
- else if (($char == '-' && $sql_len > $i + 2 && $sql[$i + 1] == '-' && $sql[$i + 2] <= ' ') || $char == '#' || ($char == '/' && $sql_len > $i + 1 && $sql[$i + 1] == '*')) {
- $i = strpos($sql, $char == '/' ? '*/' : "\n", $i);
- // didn't we hit end of string?
- if ($i === FALSE) {
- break;
- }
- if ($char == '/') $i++;
- }
-
- // We are not in a string, first check for delimiter...
- else if ($char == ';') {
- // if delimiter found, add the parsed part to the returned array
- $ret[] = array('query' => substr($sql, 0, $i), 'empty' => $nothing);
- $nothing = TRUE;
- $sql = ltrim(substr($sql, min($i + 1, $sql_len)));
- $sql_len = strlen($sql);
- if ($sql_len) {
- $i = -1;
- } else {
- // The submited statement(s) end(s) here
- return TRUE;
- }
- } // end else if (is delimiter)
-
- // ... then check for start of a string,...
- else if (($char == '"') || ($char == '\'') || ($char == '`')) {
- $in_string = TRUE;
- $nothing = FALSE;
- $string_start = $char;
- } // end else if (is start of string)
-
- elseif ($nothing) {
- $nothing = FALSE;
- }
-
- // loic1: send a fake header each 30 sec. to bypass browser timeout
- $time1 = time();
- if ($time1 >= $time0 + 30) {
- $time0 = $time1;
- header('X-pmaPing: Pong');
- } // end if
- } // end for
-
- // add any rest to the returned array
- if (!empty($sql) && preg_match('@[^[:space:]]+@', $sql)) {
- $ret[] = array('query' => $sql, 'empty' => $nothing);
- }
-
- return TRUE;
- } // end of the 'PMA_splitSqlFile()' function
-
-
- /**
- * Reads (and decompresses) a (compressed) file into a string
- *
- * @param string the path to the file
- * @param string the MIME type of the file, if empty MIME type is autodetected
- *
- * @global array the phpMyAdmin configuration
- *
- * @return string the content of the file or
- * boolean FALSE in case of an error.
- */
- function PMA_readFile($path, $mime = '') {
- global $cfg;
-
- if (!file_exists($path)) {
- return FALSE;
- }
- switch ($mime) {
- case '':
- $file = @fopen($path, 'rb');
- if (!$file) {
- return FALSE;
- }
- $test = fread($file, 3);
- fclose($file);
- if ($test[0] == chr(31) && $test[1] == chr(139)) return PMA_readFile($path, 'application/x-gzip');
- if ($test == 'BZh') return PMA_readFile($path, 'application/x-bzip');
- return PMA_readFile($path, 'text/plain');
- case 'text/plain':
- $file = @fopen($path, 'rb');
- if (!$file) {
- return FALSE;
- }
- $content = fread($file, filesize($path));
- fclose($file);
- break;
- case 'application/x-gzip':
- if ($cfg['GZipDump'] && @function_exists('gzopen')) {
- $file = @gzopen($path, 'rb');
- if (!$file) {
- return FALSE;
- }
- $content = '';
- while (!gzeof($file)) {
- $content .= gzgetc($file);
- }
- gzclose($file);
- } else {
- return FALSE;
- }
- break;
- case 'application/x-bzip':
- if ($cfg['BZipDump'] && @function_exists('bzdecompress')) {
- $file = @fopen($path, 'rb');
- if (!$file) {
- return FALSE;
- }
- $content = fread($file, filesize($path));
- fclose($file);
- $content = bzdecompress($content);
- } else {
- return FALSE;
- }
- break;
- default:
- return FALSE;
- }
- return $content;
- }
-
- ?>
-