source: www/work/phpmyadmin_1/libraries/export/sql.php@ 1

Last change on this file since 1 was 1, checked in by george, 17 years ago

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1<?php
2/* $Id: sql.php,v 2.6.2.1 2004/06/07 11:27:10 rabus Exp $ */
3// vim: expandtab sw=4 ts=4 sts=4:
4error_reporting(E_ALL);
5/**
6 * Set of functions used to build SQL dumps of tables
7 */
8
9/**
10 * Returns $table's field types
11 *
12 * @param string the database name
13 * @param string the table name
14 *
15 * @return array the field types; key of array is PMA_backquote
16 * of the field name
17 *
18 * @access public
19 *
20 * This function exists because mysql_field_type() returns 'blob'
21 * even for 'text' fields.
22 */
23function PMA_fieldTypes($db, $table,$use_backquotes) {
24 PMA_mysql_select_db($db);
25 $table_def = PMA_mysql_query('SHOW FIELDS FROM ' . PMA_backquote($db) . '.' . PMA_backquote($table));
26 while($row = @PMA_mysql_fetch_array($table_def)) {
27 $types[PMA_backquote($row['Field'],$use_backquotes)] = ereg_replace('\\(.*', '', $row['Type']);
28 }
29 return $types;
30}
31
32/**
33 * Outputs comment
34 *
35 * @param string Text of comment
36 *
37 * @return bool Whether it suceeded
38 */
39function PMA_exportComment($text) {
40 return PMA_exportOutputHandler('# ' . $text . $GLOBALS['crlf']);
41}
42
43/**
44 * Outputs export header
45 *
46 * @return bool Whether it suceeded
47 *
48 * @access public
49 */
50function PMA_exportHeader() {
51 global $crlf;
52 global $cfg;
53
54 $head = '# phpMyAdmin SQL Dump' . $crlf
55 . '# version ' . PMA_VERSION . $crlf
56 . '# http://www.phpmyadmin.net' . $crlf
57 . '#' . $crlf
58 . '# ' . $GLOBALS['strHost'] . ': ' . $cfg['Server']['host'];
59 if (!empty($cfg['Server']['port'])) {
60 $head .= ':' . $cfg['Server']['port'];
61 }
62 $head .= $crlf
63 . '# ' . $GLOBALS['strGenTime'] . ': ' . PMA_localisedDate() . $crlf
64 . '# ' . $GLOBALS['strServerVersion'] . ': ' . substr(PMA_MYSQL_INT_VERSION, 0, 1) . '.' . (int) substr(PMA_MYSQL_INT_VERSION, 1, 2) . '.' . (int) substr(PMA_MYSQL_INT_VERSION, 3) . $crlf
65 . '# ' . $GLOBALS['strPHPVersion'] . ': ' . phpversion() . $crlf;
66 return PMA_exportOutputHandler($head);
67}
68
69/**
70 * Outputs create database database
71 *
72 * @param string Database name
73 *
74 * @return bool Whether it suceeded
75 *
76 * @access public
77 */
78function PMA_exportDBCreate($db) {
79 global $crlf;
80 if (isset($GLOBALS['drop_database'])) {
81 if (!PMA_exportOutputHandler('DROP DATABASE ' . (isset($GLOBALS['use_backquotes']) ? PMA_backquote($db) : $db) . ';' . $crlf)) return FALSE;
82 }
83 $create_query = 'CREATE DATABASE ' . (isset($GLOBALS['use_backquotes']) ? PMA_backquote($db) : $db);
84 if (PMA_MYSQL_INT_VERSION >= 40101) {
85 $collation = PMA_getDbCollation($db);
86 if (strpos($collation, '_')) {
87 $create_query .= ' DEFAULT CHARACTER SET ' . substr($collation, 0, strpos($collation, '_')) . ' COLLATE ' . $collation;
88 } else {
89 $create_query .= ' DEFAULT CHARACTER SET ' . $collation;
90 }
91 }
92 $create_query .= ';' . $crlf;
93 if (!PMA_exportOutputHandler($create_query)) return FALSE;
94 return PMA_exportOutputHandler('USE ' . $db . ';' . $crlf);
95}
96
97/**
98 * Outputs database header
99 *
100 * @param string Database name
101 *
102 * @return bool Whether it suceeded
103 *
104 * @access public
105 */
106function PMA_exportDBHeader($db) {
107 global $crlf;
108 $head = '# ' . $crlf
109 . '# ' . $GLOBALS['strDatabase'] . ': ' . (isset($GLOBALS['use_backquotes']) ? PMA_backquote($db) : '\'' . $db . '\''). $crlf
110 . '# ' . $crlf;
111 return PMA_exportOutputHandler($head);
112}
113
114/**
115 * Outputs database footer
116 *
117 * @param string Database name
118 *
119 * @return bool Whether it suceeded
120 *
121 * @access public
122 */
123function PMA_exportDBFooter($db) {
124 if (isset($GLOBALS['sql_constraints'])) return PMA_exportOutputHandler($GLOBALS['sql_constraints']);
125 return TRUE;
126}
127
128/**
129 * Returns $table's CREATE definition
130 *
131 * @param string the database name
132 * @param string the table name
133 * @param string the end of line sequence
134 * @param string the url to go back in case of error
135 * @param boolean whether to include creation/update/check dates
136 *
137 * @return string resulting schema
138 *
139 * @global boolean whether to add 'drop' statements or not
140 * @global boolean whether to use backquotes to allow the use of special
141 * characters in database, table and fields names or not
142 *
143 * @access public
144 */
145function PMA_getTableDef($db, $table, $crlf, $error_url, $show_dates = false)
146{
147 global $drop;
148 global $use_backquotes;
149 global $cfgRelation;
150 global $sql_constraints;
151
152 $schema_create = '';
153 $auto_increment = '';
154 $new_crlf = $crlf;
155
156
157 $result = PMA_mysql_query('SHOW TABLE STATUS FROM ' . PMA_backquote($db) . ' LIKE \'' . PMA_sqlAddslashes($table) . '\'');
158 if ($result != FALSE) {
159 if (mysql_num_rows($result) > 0) {
160 $tmpres = PMA_mysql_fetch_array($result);
161 if (isset($GLOBALS['auto_increment']) && !empty($tmpres['Auto_increment'])) {
162 $auto_increment .= ' AUTO_INCREMENT=' . $tmpres['Auto_increment'] . ' ';
163 }
164
165 if ($show_dates && isset($tmpres['Create_time']) && !empty($tmpres['Create_time'])) {
166 $schema_create .= '# ' . $GLOBALS['strStatCreateTime'] . ': ' . PMA_localisedDate(strtotime($tmpres['Create_time'])) . $crlf;
167 $new_crlf = '#' . $crlf . $crlf;
168 }
169
170 if ($show_dates && isset($tmpres['Update_time']) && !empty($tmpres['Update_time'])) {
171 $schema_create .= '# ' . $GLOBALS['strStatUpdateTime'] . ': ' . PMA_localisedDate(strtotime($tmpres['Update_time'])) . $crlf;
172 $new_crlf = '#' . $crlf . $crlf;
173 }
174
175 if ($show_dates && isset($tmpres['Check_time']) && !empty($tmpres['Check_time'])) {
176 $schema_create .= '# ' . $GLOBALS['strStatCheckTime'] . ': ' . PMA_localisedDate(strtotime($tmpres['Check_time'])) . $crlf;
177 $new_crlf = '#' . $crlf . $crlf;
178 }
179 mysql_free_result($result);
180 }
181 }
182
183 $schema_create .= $new_crlf;
184
185 if (!empty($drop)) {
186 $schema_create .= 'DROP TABLE IF EXISTS ' . PMA_backquote($table, $use_backquotes) . ';' . $crlf;
187 }
188
189 // Steve Alberty's patch for complete table dump,
190 // Whether to quote table and fields names or not
191 if ($use_backquotes) {
192 PMA_mysql_query('SET SQL_QUOTE_SHOW_CREATE = 1');
193 } else {
194 PMA_mysql_query('SET SQL_QUOTE_SHOW_CREATE = 0');
195 }
196 $result = PMA_mysql_query('SHOW CREATE TABLE ' . PMA_backquote($db) . '.' . PMA_backquote($table));
197 if ($result != FALSE && mysql_num_rows($result) > 0) {
198 $tmpres = PMA_mysql_fetch_array($result);
199 // Fix for case problems with winwin, thanks to
200 // Pawe³ Szczepañski <pauluz at users.sourceforge.net>
201 $pos = strpos($tmpres[1], ' (');
202
203 // Fix a problem with older versions of mysql
204 // Find the first opening parenthesys, i.e. that after the name
205 // of the table
206 $pos2 = strpos($tmpres[1], '(');
207 // Old mysql did not insert a space after table name
208 // in query "show create table ..."!
209 if ($pos2 != $pos + 1)
210 {
211 // This is the real position of the first character after
212 // the name of the table
213 $pos = $pos2;
214 // Old mysql did not even put newlines and indentation...
215 $tmpres[1] = str_replace(",", ",\n ", $tmpres[1]);
216 }
217
218 $tmpres[1] = substr($tmpres[1], 0, 13)
219 . (($use_backquotes) ? PMA_backquote($tmpres[0]) : $tmpres[0])
220 . substr($tmpres[1], $pos);
221 $tmpres[1] = str_replace("\n", $crlf, $tmpres[1]);
222 if (preg_match_all('((,\r?\n[\s]*(CONSTRAINT|FOREIGN[\s]*KEY)[^\r\n]+)+)', $tmpres[1], $regs)) {
223 if (!isset($sql_constraints)) {
224 if (isset($GLOBALS['no_constraints_comments'])) {
225 $sql_constraints = '';
226 } else {
227 $sql_constraints = $crlf . '#' . $crlf
228 . '# ' . $GLOBALS['strConstraintsForDumped'] . $crlf
229 . '#' . $crlf;
230 }
231 }
232 if (!isset($GLOBALS['no_constraints_comments'])) {
233 $sql_constraints .= $crlf .'#' . $crlf .'# ' . $GLOBALS['strConstraintsForTable'] . ' ' . PMA_backquote($table) . $crlf . '#' . $crlf;
234 }
235 $sql_constraints .= 'ALTER TABLE ' . PMA_backquote($table) . $crlf
236 . preg_replace('/(,\r?\n|^)([\s]*)(CONSTRAINT|FOREIGN[\s]*KEY)/', '\1\2ADD \3', substr($regs[0][0], 2))
237 . ";\n";
238 $tmpres[1] = preg_replace('((,\r?\n[\s]*(CONSTRAINT|FOREIGN[\s]*KEY)[^\r\n]+)+)', '', $tmpres[1]);
239 }
240 $schema_create .= $tmpres[1];
241 }
242
243 $schema_create .= $auto_increment;
244
245
246 mysql_free_result($result);
247 return $schema_create;
248} // end of the 'PMA_getTableDef()' function
249
250
251/**
252 * Returns $table's comments, relations etc.
253 *
254 * @param string the database name
255 * @param string the table name
256 * @param string the end of line sequence
257 * @param boolean whether to include relation comments
258 * @param boolean whether to include column comments
259 * @param boolean whether to include mime comments
260 *
261 * @return string resulting comments
262 *
263 * @access public
264 */
265function PMA_getTableComments($db, $table, $crlf, $do_relation = false, $do_comments = false, $do_mime = false)
266{
267 global $cfgRelation;
268 global $use_backquotes;
269 global $sql_constraints;
270
271 $schema_create = '';
272
273 if ($do_comments && $cfgRelation['commwork']) {
274 if (!($comments_map = PMA_getComments($db, $table))) unset($comments_map);
275 }
276
277 // Check if we can use Relations (Mike Beck)
278 if ($do_relation && !empty($cfgRelation['relation'])) {
279 // Find which tables are related with the current one and write it in
280 // an array
281 $res_rel = PMA_getForeigners($db, $table);
282
283 if ($res_rel && count($res_rel) > 0) {
284 $have_rel = TRUE;
285 } else {
286 $have_rel = FALSE;
287 }
288 }
289 else {
290 $have_rel = FALSE;
291 } // end if
292
293 if ($do_mime && $cfgRelation['mimework']) {
294 if (!($mime_map = PMA_getMIME($db, $table, true))) unset($mime_map);
295 }
296
297 if (isset($comments_map) && count($comments_map) > 0) {
298 $schema_create .= $crlf . '#' . $crlf . '# COMMENTS FOR TABLE ' . PMA_backquote($table, $use_backquotes) . ':' . $crlf;
299 foreach($comments_map AS $comment_field => $comment) {
300 $schema_create .= '# ' . PMA_backquote($comment_field, $use_backquotes) . $crlf . '# ' . PMA_backquote($comment, $use_backquotes) . $crlf;
301 }
302 $schema_create .= '#' . $crlf;
303 }
304
305 if (isset($mime_map) && count($mime_map) > 0) {
306 $schema_create .= $crlf . '#' . $crlf . '# MIME TYPES FOR TABLE ' . PMA_backquote($table, $use_backquotes) . ':' . $crlf;
307 @reset($mime_map);
308 foreach($mime_map AS $mime_field => $mime) {
309 $schema_create .= '# ' . PMA_backquote($mime_field, $use_backquotes) . $crlf . '# ' . PMA_backquote($mime['mimetype'], $use_backquotes) . $crlf;
310 }
311 $schema_create .= '#' . $crlf;
312 }
313
314 if ($have_rel) {
315 $schema_create .= $crlf . '#' . $crlf . '# RELATIONS FOR TABLE ' . PMA_backquote($table, $use_backquotes) . ':' . $crlf;
316 foreach($res_rel AS $rel_field => $rel) {
317 $schema_create .= '# ' . PMA_backquote($rel_field, $use_backquotes) . $crlf . '# ' . PMA_backquote($rel['foreign_table'], $use_backquotes) . ' -> ' . PMA_backquote($rel['foreign_field'], $use_backquotes) . $crlf;
318 }
319 $schema_create .= '#' . $crlf;
320 }
321
322 return $schema_create;
323
324} // end of the 'PMA_getTableComments()' function
325
326/**
327 * Outputs table's structure
328 *
329 * @param string the database name
330 * @param string the table name
331 * @param string the end of line sequence
332 * @param string the url to go back in case of error
333 * @param boolean whether to include relation comments
334 * @param boolean whether to include column comments
335 * @param boolean whether to include mime comments
336 *
337 * @return bool Whether it suceeded
338 *
339 * @access public
340 */
341function PMA_exportStructure($db, $table, $crlf, $error_url, $relation = FALSE, $comments = FALSE, $mime = FALSE, $dates = FALSE) {
342 $formatted_table_name = (isset($GLOBALS['use_backquotes']))
343 ? PMA_backquote($table)
344 : '\'' . $table . '\'';
345 $dump = $crlf
346 . '# --------------------------------------------------------' . $crlf
347 . $crlf . '#' . $crlf
348 . '# ' . $GLOBALS['strTableStructure'] . ' ' . $formatted_table_name . $crlf
349 . '#' . $crlf
350 . PMA_getTableDef($db, $table, $crlf, $error_url, $dates) . ';' . $crlf
351 . PMA_getTableComments($db, $table, $crlf, $relation, $comments, $mime);
352
353
354 return PMA_exportOutputHandler($dump);
355}
356
357/**
358 * Dispatches between the versions of 'getTableContent' to use depending
359 * on the php version
360 *
361 * @param string the database name
362 * @param string the table name
363 * @param string the end of line sequence
364 * @param string the url to go back in case of error
365 * @param string SQL query for obtaining data
366 *
367 * @return bool Whether it suceeded
368 *
369 * @global boolean whether to use backquotes to allow the use of special
370 * characters in database, table and fields names or not
371 * @global integer the number of records
372 * @global integer the current record position
373 *
374 * @access public
375 *
376 * @see PMA_getTableContentFast(), PMA_getTableContentOld()
377 *
378 * @author staybyte
379 */
380function PMA_exportData($db, $table, $crlf, $error_url, $sql_query)
381{
382 global $use_backquotes;
383 global $rows_cnt;
384 global $current_row;
385
386 $formatted_table_name = (isset($GLOBALS['use_backquotes']))
387 ? PMA_backquote($table)
388 : '\'' . $table . '\'';
389 $head = $crlf
390 . '#' . $crlf
391 . '# ' . $GLOBALS['strDumpingData'] . ' ' . $formatted_table_name . $crlf
392 . '#' . $crlf .$crlf;
393
394 if (!PMA_exportOutputHandler($head)) return FALSE;
395
396 $buffer = '';
397
398 $result = PMA_mysql_query($sql_query) or PMA_mysqlDie('', $sql_query, '', $error_url);
399 if ($result != FALSE) {
400 $fields_cnt = mysql_num_fields($result);
401 $rows_cnt = mysql_num_rows($result);
402
403 // get the real types of the table's fields (in an array)
404 // the key of the array is the backquoted field name
405 $field_types = PMA_fieldTypes($db,$table,$use_backquotes);
406
407 // analyze the query to get the true column names, not the aliases
408 // (this fixes an undefined index, also if Complete inserts
409 // are used, we did not get the true column name in case of aliases)
410 $analyzed_sql = PMA_SQP_analyze(PMA_SQP_parse($sql_query));
411
412 // Checks whether the field is an integer or not
413 for ($j = 0; $j < $fields_cnt; $j++) {
414
415 if (isset($analyzed_sql[0]['select_expr'][$j]['column'])) {
416 $field_set[$j] = PMA_backquote($analyzed_sql[0]['select_expr'][$j]['column'], $use_backquotes);
417 } else {
418 $field_set[$j] = PMA_backquote(PMA_mysql_field_name($result, $j), $use_backquotes);
419 }
420
421 $type = $field_types[$field_set[$j]];
422
423 if ($type == 'tinyint' || $type == 'smallint' || $type == 'mediumint' || $type == 'int' ||
424 $type == 'bigint' || (PMA_MYSQL_INT_VERSION < 40100 && $type == 'timestamp')) {
425 $field_num[$j] = TRUE;
426 } else {
427 $field_num[$j] = FALSE;
428 }
429 // blob
430 if ($type == 'blob' || $type == 'mediumblob' || $type == 'longblob' || $type == 'tinyblob') {
431 $field_blob[$j] = TRUE;
432 } else {
433 $field_blob[$j] = FALSE;
434 }
435 } // end for
436
437 if (isset($GLOBALS['sql_type']) && $GLOBALS['sql_type'] == 'update') {
438 // update
439 $schema_insert = 'UPDATE ' . PMA_backquote($table, $use_backquotes) . ' SET ';
440 $fields_no = count($field_set);
441 } else {
442 // insert or replace
443 if (isset($GLOBALS['sql_type']) && $GLOBALS['sql_type'] == 'replace') {
444 $sql_command = 'REPLACE';
445 } else {
446 $sql_command = 'INSERT';
447 }
448
449 // delayed inserts?
450 if (isset($GLOBALS['delayed'])) {
451 $insert_delayed = ' DELAYED';
452 } else {
453 $insert_delayed = '';
454 }
455
456 // Sets the scheme
457 if (isset($GLOBALS['showcolumns'])) {
458 $fields = implode(', ', $field_set);
459 $schema_insert = $sql_command . $insert_delayed .' INTO ' . PMA_backquote($table, $use_backquotes)
460 . ' (' . $fields . ') VALUES (';
461 } else {
462 $schema_insert = $sql_command . $insert_delayed .' INTO ' . PMA_backquote($table, $use_backquotes)
463 . ' VALUES (';
464 }
465 }
466
467 $search = array("\x00", "\x0a", "\x0d", "\x1a"); //\x08\\x09, not required
468 $replace = array('\0', '\n', '\r', '\Z');
469 $current_row = 0;
470
471 while ($row = PMA_mysql_fetch_row($result)) {
472 $current_row++;
473 for ($j = 0; $j < $fields_cnt; $j++) {
474 if (!isset($row[$j])) {
475 $values[] = 'NULL';
476 } else if ($row[$j] == '0' || $row[$j] != '') {
477 // a number
478 if ($field_num[$j]) {
479 $values[] = $row[$j];
480 // a not empty blob
481 } else if ($field_blob[$j] && !empty($row[$j])) {
482 $values[] = '0x' . bin2hex($row[$j]);
483 // a string
484 } else {
485 $values[] = "'" . str_replace($search, $replace, PMA_sqlAddslashes($row[$j])) . "'";
486 }
487 } else {
488 $values[] = "''";
489 } // end if
490 } // end for
491
492 // should we make update?
493 if (isset($GLOBALS['sql_type']) && $GLOBALS['sql_type'] == 'update') {
494
495 $insert_line = $schema_insert;
496 for ($i = 0; $i < $fields_no; $i++) {
497 if ($i > 0) {
498 $insert_line .= ', ';
499 }
500 $insert_line .= $field_set[$i] . ' = ' . $values[$i];
501 }
502
503 } else {
504
505 // Extended inserts case
506 if (isset($GLOBALS['extended_ins'])) {
507 if ($current_row == 1) {
508 $insert_line = $schema_insert . implode(', ', $values) . ')';
509 } else {
510 $insert_line = '(' . implode(', ', $values) . ')';
511 }
512 }
513 // Other inserts case
514 else {
515 $insert_line = $schema_insert . implode(', ', $values) . ')';
516 }
517 }
518 unset($values);
519
520 if (!PMA_exportOutputHandler($insert_line . ((isset($GLOBALS['extended_ins']) && ($current_row < $rows_cnt)) ? ',' : ';') . $crlf)) return FALSE;
521
522 } // end while
523 } // end if ($result != FALSE)
524 mysql_free_result($result);
525
526 return TRUE;
527} // end of the 'PMA_exportData()' function
528?>
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