fluxcms /inc/MDB2/Driver/Reverse/sqlite.php

Language PHP Lines 413
MD5 Hash 11959776441f71330e2e015b4ce79af8
Repository https://github.com/chregu/fluxcms.git View Raw File View Project SPDX
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
<?php
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5                                                 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox,                 |
// | Stig. S. Bakken, Lukas Smith                                         |
// | All rights reserved.                                                 |
// +----------------------------------------------------------------------+
// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
// | API as well as database abstraction for PHP applications.            |
// | This LICENSE is in the BSD license style.                            |
// |                                                                      |
// | Redistribution and use in source and binary forms, with or without   |
// | modification, are permitted provided that the following conditions   |
// | are met:                                                             |
// |                                                                      |
// | Redistributions of source code must retain the above copyright       |
// | notice, this list of conditions and the following disclaimer.        |
// |                                                                      |
// | Redistributions in binary form must reproduce the above copyright    |
// | notice, this list of conditions and the following disclaimer in the  |
// | documentation and/or other materials provided with the distribution. |
// |                                                                      |
// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
// | Lukas Smith nor the names of his contributors may be used to endorse |
// | or promote products derived from this software without specific prior|
// | written permission.                                                  |
// |                                                                      |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
// | POSSIBILITY OF SUCH DAMAGE.                                          |
// +----------------------------------------------------------------------+
// | Author: Lukas Smith <smith@pooteeweet.org>                           |
// +----------------------------------------------------------------------+
//
// $Id$
//

require_once 'MDB2/Driver/Reverse/Common.php';

/**
 * MDB2 SQlite driver for the schema reverse engineering module
 *
 * @package MDB2
 * @category Database
 * @author  Lukas Smith <smith@pooteeweet.org>
 */
class MDB2_Driver_Reverse_sqlite extends MDB2_Driver_Reverse_Common
{
    function _getTableColumns($sql)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $start_pos = strpos($sql, '(');
        $end_pos = strrpos($sql, ')');
        $column_def = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
        $column_sql = split(',', $column_def);
        $columns = array();
        $count = count($column_sql);
        if ($count == 0) {
            return $db->raiseError('unexpected empty table column definition list');
        }
        $regexp = '/^([^ ]+) (CHAR|VARCHAR|VARCHAR2|TEXT|BOOLEAN|INT|INTEGER|BIGINT|DOUBLE|FLOAT|DATETIME|DATE|TIME|LONGTEXT|LONGBLOB)( UNSIGNED)?( PRIMARY KEY)?( \(([1-9][0-9]*)(,([1-9][0-9]*))?\))?( DEFAULT (\'[^\']*\'|[^ ]+))?( NOT NULL)?$/i';
        for ($i=0, $j=0; $i<$count; ++$i) {
            if (!preg_match($regexp, trim($column_sql[$i]), $matches)) {
                return $db->raiseError('unexpected table column SQL definition: "'.$column_sql[$i].'"');
            }
            $columns[$j]['name'] = $matches[1];
            $columns[$j]['type'] = strtolower($matches[2]);
            if (isset($matches[3]) && strlen($matches[3])) {
                $columns[$j]['unsigned'] = true;
            }
            if (isset($matches[4]) && strlen($matches[4])) {
                $columns[$j]['autoincrement'] = true;
            }
            if (isset($matches[6]) && strlen($matches[6])) {
                $columns[$j]['length'] = $matches[6];
            }
            if (isset($matches[8]) && strlen($matches[8])) {
                $columns[$j]['decimal'] = $matches[8];
            }
            if (isset($matches[10]) && strlen($matches[10])) {
                $default = $matches[10];
                if (strlen($default) && $default[0]=="'") {
                    $default = str_replace("''", "'", substr($default, 1, strlen($default)-2));
                }
                if ($default === 'NULL') {
                    $default = null;
                }
                $columns[$j]['default'] = $default;
            }
            if (isset($matches[11]) && strlen($matches[11])) {
                $columns[$j]['notnull'] = true;
            }
            ++$j;
        }
        return $columns;
    }

    // {{{ getTableFieldDefinition()

    /**
     * get the stucture of a field into an array
     *
     * @param string    $table         name of table that should be used in method
     * @param string    $field_name     name of field that should be used in method
     * @return mixed data array on success, a MDB2 error on failure
     * @access public
     */
    function getTableFieldDefinition($table, $field_name)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $result = $db->loadModule('Datatype', null, true);
        if (PEAR::isError($result)) {
            return $result;
        }
        $query = "SELECT sql FROM sqlite_master WHERE type='table' AND name='$table'";
        $sql = $db->queryOne($query);
        if (PEAR::isError($sql)) {
            return $sql;
        }
        $columns = $this->_getTableColumns($sql);
        foreach ($columns as $column) {
            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
                if ($db->options['field_case'] == CASE_LOWER) {
                    $column['name'] = strtolower($column['name']);
                } else {
                    $column['name'] = strtoupper($column['name']);
                }
            } else {
                $column = array_change_key_case($column, $db->options['field_case']);
            }
            if ($field_name == $column['name']) {
                list($types, $length, $unsigned) = $db->datatype->mapNativeDatatype($column);
                $notnull = false;
                if (array_key_exists('notnull', $column)) {
                    $notnull = $column['notnull'];
                }
                $default = false;
                if (array_key_exists('default', $column)) {
                    $default = $column['default'];
                    if (is_null($default) && $notnull) {
                        $default = '';
                    }
                }
                $autoincrement = false;
                if (array_key_exists('autoincrement', $column) && $column['autoincrement']) {
                    $autoincrement = true;
                }
                $definition = array();
                foreach ($types as $key => $type) {
                    $definition[$key] = array(
                        'type' => $type,
                        'notnull' => $notnull,
                    );
                    if ($length > 0) {
                        $definition[$key]['length'] = $length;
                    }
                    if ($unsigned) {
                        $definition[$key]['unsigned'] = true;
                    }
                    if ($default !== false) {
                        $definition[$key]['default'] = $default;
                    }
                    if ($autoincrement !== false) {
                        $definition[$key]['autoincrement'] = $autoincrement;
                    }
                }
                return $definition;
            }
        }

        return $db->raiseError(MDB2_ERROR, null, null,
            'getTableFieldDefinition: it was not specified an existing table column');
    }

    // }}}
    // {{{ getTableIndexDefinition()

    /**
     * get the stucture of an index into an array
     *
     * @param string    $table      name of table that should be used in method
     * @param string    $index_name name of index that should be used in method
     * @return mixed data array on success, a MDB2 error on failure
     * @access public
     */
    function getTableIndexDefinition($table, $index_name)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $index_name = $db->getIndexName($index_name);
        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND name='$index_name' AND tbl_name='$table' AND sql NOT NULL ORDER BY name";
        $sql = $db->queryOne($query, 'text');
        if (PEAR::isError($sql)) {
            return $sql;
        }
        if (!$sql) {
            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
                'getTableIndexDefinition: it was not specified an existing table index');
        }

        $sql = strtolower($sql);
        $start_pos = strpos($sql, '(');
        $end_pos = strrpos($sql, ')');
        $column_names = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
        $column_names = split(',', $column_names);

        if (preg_match("/^create unique/", $sql)) {
            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
                'getTableIndexDefinition: it was not specified an existing table index');
        }

        $definition = array();
        $count = count($column_names);
        for ($i=0; $i<$count; ++$i) {
            $column_name = strtok($column_names[$i]," ");
            $collation = strtok(" ");
            $definition['fields'][$column_name] = array();
            if (!empty($collation)) {
                $definition['fields'][$column_name]['sorting'] =
                    ($collation=='ASC' ? 'ascending' : 'descending');
            }
        }

        if (!array_key_exists('fields', $definition)) {
            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
                'getTableIndexDefinition: it was not specified an existing table index');
        }
        return $definition;
    }

    // }}}
    // {{{ getTableConstraintDefinition()

    /**
     * get the stucture of a constraint into an array
     *
     * @param string    $table      name of table that should be used in method
     * @param string    $index_name name of index that should be used in method
     * @return mixed data array on success, a MDB2 error on failure
     * @access public
     */
    function getTableConstraintDefinition($table, $index_name)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $index_name = $db->getIndexName($index_name);
        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND name='$index_name' AND tbl_name='$table' AND sql NOT NULL ORDER BY name";
        $sql = $db->queryOne($query, 'text');
        if (PEAR::isError($sql)) {
            return $sql;
        }
        if (!$sql) {
            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
                'getTableIndexDefinition: it was not specified an existing table index');
        }

        $sql = strtolower($sql);
        $start_pos = strpos($sql, '(');
        $end_pos = strrpos($sql, ')');
        $column_names = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
        $column_names = split(',', $column_names);

        if (!preg_match("/^create unique/", $sql)) {
            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
                'getTableConstraintDefinition: it was not specified an existing table constraint');
        }

        $definition = array();
        $definition['unique'] = true;
        $count = count($column_names);
        for ($i=0; $i<$count; ++$i) {
            $column_name = strtok($column_names[$i]," ");
            $collation = strtok(" ");
            $definition['fields'][$column_name] = array();
            if (!empty($collation)) {
                $definition['fields'][$column_name]['sorting'] =
                    ($collation=='ASC' ? 'ascending' : 'descending');
            }
        }

        $result->free();
        if (!array_key_exists('fields', $definition)) {
            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
                'getTableConstraintDefinition: it was not specified an existing table constraint');
        }
        return $definition;
    }

    // }}}
    // {{{ tableInfo()

    /**
     * Returns information about a table
     *
     * @param string         $result  a string containing the name of a table
     * @param int            $mode    a valid tableInfo mode
     *
     * @return array  an associative array with the information requested.
     *                 A MDB2_Error object on failure.
     *
     * @see MDB2_Driver_Common::tableInfo()
     * @since Method available since Release 1.7.0
     */
    function tableInfo($result, $mode = null)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        if (is_string($result)) {
            /*
             * Probably received a table name.
             * Create a result resource identifier.
             */
            $id = $db->queryAll("PRAGMA table_info('$result');", null, MDB2_FETCHMODE_ASSOC);
            $got_string = true;
        } else {
            return $db->raiseError(MDB2_ERROR_NOT_CAPABLE, null, null,
                                     'This DBMS can not obtain tableInfo' .
                                     ' from result sets');
        }

        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            if ($db->options['field_case'] == CASE_LOWER) {
                $case_func = 'strtolower';
            } else {
                $case_func = 'strtoupper';
            }
        } else {
            $case_func = 'strval';
        }

        $count = count($id);
        $res   = array();

        if ($mode) {
            $res['num_fields'] = $count;
        }

        $db->loadModule('Datatype', null, true);
        for ($i = 0; $i < $count; $i++) {
            if (strpos($id[$i]['type'], '(') !== false) {
                $bits = explode('(', $id[$i]['type']);
                $type = $bits[0];
                $len  = rtrim($bits[1],')');
            } else {
                $type = $id[$i]['type'];
                $len  = 0;
            }

            $flags = '';
            if ($id[$i]['pk']) {
                $flags.= 'primary_key ';
            }
            if ($id[$i]['notnull']) {
                $flags.= 'not_null ';
            }
            if ($id[$i]['dflt_value'] !== null) {
                $flags.= 'default_' . rawurlencode($id[$i]['dflt_value']);
            }
            $flags = trim($flags);

            $res[$i] = array(
                'table' => $case_func($result),
                'name'  => $case_func($id[$i]['name']),
                'type'  => $type,
                'length'   => $len,
                'flags' => $flags,
            );
            $mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
            $res[$i]['mdb2type'] = $mdb2type_info[0][0];
            if ($mode & MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES) {
                $res[$i]['name'] = preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $res[$i]['name']);
            }

            if ($mode & MDB2_TABLEINFO_ORDER) {
                $res['order'][$res[$i]['name']] = $i;
            }
            if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
            }
        }

        return $res;
    }
}

?>
Back to Top