201 lines
6.9 KiB
PHP
201 lines
6.9 KiB
PHP
<?php
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/* $Id$ */
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// vim: expandtab sw=4 ts=4 sts=4:
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/* SQL import plugin for phpMyAdmin */
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if (isset($plugin_list)) {
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$plugin_list['sql'] = array(
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'text' => 'strSQL',
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'extension' => 'sql',
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'options_text' => 'strSQLImportOptions',
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);
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} else {
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/* We do not define function when plugin is just queried for information above */
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$buffer = '';
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// Defaults for parser
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$sql = '';
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$start_pos = 0;
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$i = 0;
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while (!($finished && $i >= $len) && !$error && !$timeout_passed) {
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$data = PMA_importGetNextChunk();
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if ($data === FALSE) {
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// subtract data we didn't handle yet and stop processing
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$offset -= strlen($buffer);
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break;
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} elseif ($data === TRUE) {
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// Handle rest of buffer
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} else {
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// Append new data to buffer
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$buffer .= $data;
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// Do not parse string when we're not at the end and don't have ; inside
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if ((strpos($buffer, ';') === FALSE) && !$finished) {
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continue;
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}
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}
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// Current length of our buffer
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$len = strlen($buffer);
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// Grab some SQL queries out of it
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while ($i < $len) {
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// Find first interesting character, several strpos seem to be faster than simple loop in php:
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//while (($i < $len) && (strpos('\'";#-/', $buffer[$i]) === FALSE)) $i++;
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//if ($i == $len) break;
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$oi = $i;
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$p1 = strpos($buffer, '\'', $i);
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if ($p1 === FALSE) {
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$p1 = 2147483647;
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}
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$p2 = strpos($buffer, '"', $i);
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if ($p2 === FALSE) {
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$p2 = 2147483647;
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}
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$p3 = strpos($buffer, ';', $i);
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if ($p3 === FALSE) {
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$p3 = 2147483647;
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}
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$p4 = strpos($buffer, '#', $i);
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if ($p4 === FALSE) {
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$p4 = 2147483647;
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}
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$p5 = strpos($buffer, '--', $i);
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if ($p5 === FALSE) {
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$p5 = 2147483647;
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}
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$p6 = strpos($buffer, '/*', $i);
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if ($p6 === FALSE) {
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$p6 = 2147483647;
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}
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$p7 = strpos($buffer, '`', $i);
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if ($p7 === FALSE) {
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$p7 = 2147483647;
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}
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$i = min ($p1, $p2, $p3, $p4, $p5, $p6, $p7);
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if ($i == 2147483647) {
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$i = $oi;
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if (!$finished) {
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break;
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}
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// at the end there might be some whitespace...
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if (trim($buffer) == '') {
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$buffer = '';
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$len = 0;
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break;
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}
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// We hit end of query, go there!
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$i = strlen($buffer) - 1;
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}
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// Grab current character
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$ch = $buffer[$i];
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// Quotes
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if (!(strpos('\'"`', $ch) === FALSE)) {
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$quote = $ch;
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$endq = FALSE;
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while (!$endq) {
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// Find next quote
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$pos = strpos($buffer, $quote, $i + 1);
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// No quote? Too short string
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if ($pos === FALSE) {
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// We hit end of string => unclosed quote, but we handle it as end of query
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if ($finished) {
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$endq = TRUE;
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$i = $len - 1;
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}
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break;
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}
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// Was not the quote escaped?
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$j = $pos - 1;
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while ($buffer[$j] == '\\') $j--;
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// Even count means it was not escaped
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$endq = (((($pos - 1) - $j) % 2) == 0);
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// Skip the string
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$i = $pos;
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}
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if (!$endq) {
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break;
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}
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$i++;
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// Aren't we at the end?
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if ($finished && $i == $len) {
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$i--;
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} else {
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continue;
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}
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}
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// Not enough data to decide
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if ((($i == ($len - 1) && ($ch == '-' || $ch == '/'))
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|| ($i == ($len - 2) && (($ch == '-' && $buffer[$i + 1] == '-') || ($ch == '/' && $buffer[$i + 1] == '*')))
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) && !$finished) {
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break;
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}
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// Comments
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if ($ch == '#'
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|| ($i < ($len - 1) && $ch == '-' && $buffer[$i + 1] == '-' && (($i < ($len - 2) && $buffer[$i + 2] <= ' ') || ($i == ($len - 1) && $finished)))
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|| ($i < ($len - 1) && $ch == '/' && $buffer[$i + 1] == '*')
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) {
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// Copy current string to SQL
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if ($start_pos != $i) {
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$sql .= substr($buffer, $start_pos, $i - $start_pos);
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}
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// Skip the rest
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$i = strpos($buffer, $ch == '/' ? '*/' : "\n", $i);
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// didn't we hit end of string?
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if ($i === FALSE) {
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if ($finished) {
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$i = $len - 1;
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} else {
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break;
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}
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}
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// Skip *
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if ($ch == '/') {
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$i++;
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}
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// Skip last char
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$i++;
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// Next query part will start here
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$start_pos = $i;
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// Aren't we at the end?
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if ($i == $len) {
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$i--;
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} else {
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continue;
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}
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}
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// End of SQL
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if ($ch == ';' || ($finished && ($i == $len - 1))) {
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$tmp_sql = $sql;
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if ($start_pos < $len) {
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$tmp_sql .= substr($buffer, $start_pos, $i - $start_pos + 1);
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}
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// Do not try to execute empty SQL
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if (!preg_match('/^([\s]*;)*$/', trim($tmp_sql))) {
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$sql = $tmp_sql;
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PMA_importRunQuery($sql, substr($buffer, 0, $i + 1));
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$buffer = substr($buffer, $i + 1);
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// Reset parser:
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$len = strlen($buffer);
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$sql = '';
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$i = 0;
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$start_pos = 0;
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// Any chance we will get a complete query?
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if ((strpos($buffer, ';') === FALSE) && !$finished) {
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break;
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}
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} else {
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$i++;
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$start_pos = $i;
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}
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}
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} // End of parser loop
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} // End of import loop
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// Commit any possible data in buffers
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PMA_importRunQuery('', substr($buffer, 0, $len));
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PMA_importRunQuery();
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}
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?>
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