MySQLDump::checkSizendLen() - Code Metrics - knut7/framework - Measure and Improve Code Quality continuously with Scrutinizer

MySQLDump::checkSizendLen() A
last analyzed 2021-04-14 10:14 UTC

↳ Parent: MySQLDump

Complexity

Conditions	3
Paths	4

Size

Total Lines	16
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	11
c	1
b	0
f	0
dl	0
loc	16
rs	9.9
cc	3
nc	4
nop	3

<?php

namespace Ballybran\Database;

use Ballybran\Helpers\Stdlib\CreateFiles;
use mysqli;

/**
 * MySQL database dump.
 *
 * @version    1.0
 */
class MySQLDump
{
    use CreateFiles;
    const MAX_SQL_SIZE = 1e6;

    const NONE = 0;
    const DROP = 1;
    const CREATE = 2;
    const DATA = 4;
    const TRIGGERS = 8;
    const ALL = 15; // DROP | CREATE | DATA | TRIGGERS

    private $size = 0;
    private $delTable;
    /** @var array */
    public $tables = [
        '*' => self::ALL,
    ];

    /** @var mysqli */
    private $connection;


    /**
     * Connects to database.
     * @param  mysqli connection
filter:
    dependency_paths: ["lib/*"]
     */
    public function __construct(mysqli $connection, $charset = 'utf8')
    {
        $this->connection = $connection;

        if ($connection->connect_errno) {
            throw new \Exception($connection->connect_error);

        } elseif (!$connection->set_charset($charset)) { // was added in MySQL 5.0.7 and PHP 5.0.5, fixed in PHP 5.1.5)
            throw new \Exception($connection->error);
        }
    }


    /**
     * Saves dump to the file.
     * @param  string filename
filter:
    dependency_paths: ["lib/*"]
     * @return void
     */
    public function save($file)
    {
        $this->createWritableFolder($file);
        $file = DIR_STORAGE. $file;
        $handle = strcasecmp(substr($file, -3), '.gz') ? fopen($file, 'wb') : gzopen($file, 'wb');
        if (!$handle) {

            throw new \Exception("ERROR: Cannot write file '$file'.");
        }
        $this->write($handle);
    }


    /**
     * Writes dump to logical file.
     * @param  resource
     * @return void
     */
    public function write($handle = null)
    {
        if ($handle === null) {
            $handle = fopen('php://output', 'wb');
        } elseif (!is_resource($handle) || get_resource_type($handle) !== 'stream') {
            throw new \Exception('Argument must be stream resource.');
        }

        $tables = $views = [];

        $res = $this->connection->query('SHOW FULL TABLES');
        while ($row = $res->fetch_row()) {
            if ($row[1] === 'VIEW') {
                $views[] = $row[0];
            } else {
                $tables[] = $row[0];
            }
        }
        $res->close();

        $tables = array_merge($tables, $views); // views must be last

        $this->connection->query('LOCK TABLES `' . implode('` READ, `', $tables) . '` READ');

        $db = $this->connection->query('SELECT DATABASE()')->fetch_row();
        fwrite($handle, '-- Created at ' . date('j.n.Y G:i') . " using David Grudl MySQL Dump Utility\n"
            . (isset($_SERVER['HTTP_HOST']) ? "-- Host: $_SERVER[HTTP_HOST]\n" : '')
            . '-- MySQL Server: ' . $this->connection->server_info . "\n"
            . '-- Database: ' . $db[0] . "\n"
            . "\n"
            . "SET NAMES utf8;\n"
            . "SET SQL_MODE='NO_AUTO_VALUE_ON_ZERO';\n"
            . "SET FOREIGN_KEY_CHECKS=0;\n"
            . "SET UNIQUE_CHECKS=0;\n"
            . "SET AUTOCOMMIT=0;\n"
        );

        foreach ($tables as $table) {
            $this->dumpTable($handle, $table);
        }

        fwrite($handle, "COMMIT;\n");
        fwrite($handle, "-- THE END\n");

        $this->connection->query('UNLOCK TABLES');
    }


    /**
     * Dumps table to logical file.
     * @param  resource
     * @return void
     */
    public function dumpTable($handle, $table)
    {
        $this->delTable = $this->delimite($table);
        $res = $this->connection->query("SHOW CREATE TABLE $this->delTable");
        $row = $res->fetch_assoc();
        $res->close();

        fwrite($handle, "-- --------------------------------------------------------\n\n");

        $mode = isset($this->tables[$table]) ? $this->tables[$table] : $this->tables['*'];
        $view = isset($row['Create View']);

        if ($mode & self::DROP) {
            fwrite($handle, 'DROP ' . ($view ? 'VIEW' : 'TABLE') . " IF EXISTS $this->delTable;\n\n");
        }

        if ($mode & self::CREATE) {
            fwrite($handle, $row[$view ? 'Create View' : 'Create Table'] . ";\n\n");
        }

        if (!$view && ($mode & self::DATA)) {
            fwrite($handle, 'ALTER ' . ($view ? 'VIEW' : 'TABLE') . ' ' . $this->delTable . " DISABLE KEYS;\n\n");

            $numeric = [];
            $res = $this->connection->query("SHOW COLUMNS FROM $this->delTable");
            $cols = [];
            while ($row = $res->fetch_assoc()) {
                $col = $row['Field'];
                $cols[] = $this->delimite($col);
                $numeric[$col] = (bool)preg_match('#^[^(]*(BYTE|COUNTER|SERIAL|INT|LONG$|CURRENCY|REAL|MONEY|FLOAT|DOUBLE|DECIMAL|NUMERIC|NUMBER)#i', $row['Type']);
            }
            $cols = '(' . implode(', ', $cols) . ')';
            $res->close();

            echo $this->mysqliUseResult($mode, $table, $numeric, $cols, $view, $handle);
        }
    }

        private function mysqliUseResult($mode, $table, $numeric, $cols, $view, $handle) {
            $this->size = 0;
            $res = $this->connection->query("SELECT * FROM $this->delTable", MYSQLI_USE_RESULT);
            while ($row = $res->fetch_assoc()) {
                $s = '(';
                foreach ($row as $key => $value) {
                    if ($value === null) {
                        $s .= "NULL,\t";
                    } elseif ($numeric[$key]) {
                        $s .= $value . ",\t";
                    } else {
                        $s .= "'" . $this->connection->real_escape_string($value) . "',\t";
                    }
                }

                echo $this->checkSizendLen($cols, $s, $handle);
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
if ($a->getObject()) {
            }

            $res->close();
            if ($this->size) {
                fwrite($handle, ";\n");
            }
            fwrite($handle, 'ALTER ' . ($view ? 'VIEW' : 'TABLE') . ' ' . $this->delTable . " ENABLE KEYS;\n\n");
            fwrite($handle, "\n");
        


            echo $this->trigger($mode, $handle, $table);
        
        fwrite($handle, "\n");
    
    }
    private function checkSizendLen($cols, $s, $handle) {

        if ($this->size == 0) {
            $s = "INSERT INTO $this->delTable $cols VALUES\n$s";
        } else {
            $s = ",\n$s";
        }

        $len = strlen($s) - 1;
        $s[$len - 1] = ')';
        fwrite($handle, $s, $len);

        $this->size += $len;
        if ($this->size > self::MAX_SQL_SIZE) {
            fwrite($handle, ";\n");
            $this->size = 0;
        }
    }
    private function trigger($mode, $handle, $table) {
        if ($mode & self::TRIGGERS) {
            $res = $this->connection->query("SHOW TRIGGERS LIKE '" . $this->connection->real_escape_string($table) . "'");
            if ($res->num_rows) {
                fwrite($handle, "DELIMITER ;;\n\n");
                while ($row = $res->fetch_assoc()) {
                    fwrite($handle, "CREATE TRIGGER {$this->delimite($row['Trigger'])} $row[Timing] $row[Event] ON $this->delTable FOR EACH ROW\n$row[Statement];;\n\n");
                }
                fwrite($handle, "DELIMITER ;\n\n");
            }
            $res->close();
        }

    }


    private function delimite($s)
    {
        return '`' . str_replace('`', '``', $s) . '`';
    }

}


1			<?php
2
3			namespace Ballybran\Database;
4
5			use Ballybran\Helpers\Stdlib\CreateFiles;
6			use mysqli;
7
8			/**
9			* MySQL database dump.
10			*
11			* @version 1.0
12			*/
13			class MySQLDump
14			{
15			use CreateFiles;
16			const MAX_SQL_SIZE = 1e6;
17
18			const NONE = 0;
19			const DROP = 1;
20			const CREATE = 2;
21			const DATA = 4;
22			const TRIGGERS = 8;
23			const ALL = 15; // DROP \| CREATE \| DATA \| TRIGGERS
24
25			private $size = 0;
26			private $delTable;
27			/** @var array */
28			public $tables = [
29			'*' => self::ALL,
30			];
31
32			/** @var mysqli */
33			private $connection;
34
35
36			/**
37			* Connects to database.
38			* @param mysqli connection
			0 ignored issues – show Bug introduced 2020-06-26 11:13 UTC by Report Bug Copy Issue Report The type `Ballybran\Database\connection` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
39			*/
40			public function __construct(mysqli $connection, $charset = 'utf8')
41			{
42			$this->connection = $connection;
43
44			if ($connection->connect_errno) {
45			throw new \Exception($connection->connect_error);
46
47			} elseif (!$connection->set_charset($charset)) { // was added in MySQL 5.0.7 and PHP 5.0.5, fixed in PHP 5.1.5)
48			throw new \Exception($connection->error);
49			}
50			}
51
52
53			/**
54			* Saves dump to the file.
55			* @param string filename
			0 ignored issues – show Bug introduced 2020-06-26 11:13 UTC by Report Bug Copy Issue Report The type `Ballybran\Database\filename` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
56			* @return void
57			*/
58			public function save($file)
59			{
60			$this->createWritableFolder($file);
61			$file = DIR_STORAGE. $file;
62			$handle = strcasecmp(substr($file, -3), '.gz') ? fopen($file, 'wb') : gzopen($file, 'wb');
63			if (!$handle) {
			0 ignored issues – show introduced 2021-04-14 10:14 UTC by Report Bug Copy Issue Report `$handle` is of type `resource`, thus it always evaluated to `false`. Loading history...
64			throw new \Exception("ERROR: Cannot write file '$file'.");
65			}
66			$this->write($handle);
67			}
68
69
70			/**
71			* Writes dump to logical file.
72			* @param resource
73			* @return void
74			*/
75			public function write($handle = null)
76			{
77			if ($handle === null) {
78			$handle = fopen('php://output', 'wb');
79			} elseif (!is_resource($handle) \|\| get_resource_type($handle) !== 'stream') {
80			throw new \Exception('Argument must be stream resource.');
81			}
82
83			$tables = $views = [];
84
85			$res = $this->connection->query('SHOW FULL TABLES');
86			while ($row = $res->fetch_row()) {
87			if ($row[1] === 'VIEW') {
88			$views[] = $row[0];
89			} else {
90			$tables[] = $row[0];
91			}
92			}
93			$res->close();
94
95			$tables = array_merge($tables, $views); // views must be last
96
97			$this->connection->query('LOCK TABLES `' . implode('` READ, `', $tables) . '` READ');
98
99			$db = $this->connection->query('SELECT DATABASE()')->fetch_row();
100			fwrite($handle, '-- Created at ' . date('j.n.Y G:i') . " using David Grudl MySQL Dump Utility\n"
101			. (isset($_SERVER['HTTP_HOST']) ? "-- Host: $_SERVER[HTTP_HOST]\n" : '')
102			. '-- MySQL Server: ' . $this->connection->server_info . "\n"
103			. '-- Database: ' . $db[0] . "\n"
104			. "\n"
105			. "SET NAMES utf8;\n"
106			. "SET SQL_MODE='NO_AUTO_VALUE_ON_ZERO';\n"
107			. "SET FOREIGN_KEY_CHECKS=0;\n"
108			. "SET UNIQUE_CHECKS=0;\n"
109			. "SET AUTOCOMMIT=0;\n"
110			);
111
112			foreach ($tables as $table) {
113			$this->dumpTable($handle, $table);
114			}
115
116			fwrite($handle, "COMMIT;\n");
117			fwrite($handle, "-- THE END\n");
118
119			$this->connection->query('UNLOCK TABLES');
120			}
121
122
123			/**
124			* Dumps table to logical file.
125			* @param resource
126			* @return void
127			*/
128			public function dumpTable($handle, $table)
129			{
130			$this->delTable = $this->delimite($table);
131			$res = $this->connection->query("SHOW CREATE TABLE $this->delTable");
132			$row = $res->fetch_assoc();
133			$res->close();
134
135			fwrite($handle, "-- --------------------------------------------------------\n\n");
136
137			$mode = isset($this->tables[$table]) ? $this->tables[$table] : $this->tables['*'];
138			$view = isset($row['Create View']);
139
140			if ($mode & self::DROP) {
141			fwrite($handle, 'DROP ' . ($view ? 'VIEW' : 'TABLE') . " IF EXISTS $this->delTable;\n\n");
142			}
143
144			if ($mode & self::CREATE) {
145			fwrite($handle, $row[$view ? 'Create View' : 'Create Table'] . ";\n\n");
146			}
147
148			if (!$view && ($mode & self::DATA)) {
149			fwrite($handle, 'ALTER ' . ($view ? 'VIEW' : 'TABLE') . ' ' . $this->delTable . " DISABLE KEYS;\n\n");
			0 ignored issues – show introduced 2020-06-26 11:13 UTC by Report Bug Copy Issue Report The condition `$view` is always `false`. Loading history...
150			$numeric = [];
151			$res = $this->connection->query("SHOW COLUMNS FROM $this->delTable");
152			$cols = [];
153			while ($row = $res->fetch_assoc()) {
154			$col = $row['Field'];
155			$cols[] = $this->delimite($col);
156			$numeric[$col] = (bool)preg_match('#^[^(]*(BYTE\|COUNTER\|SERIAL\|INT\|LONG$\|CURRENCY\|REAL\|MONEY\|FLOAT\|DOUBLE\|DECIMAL\|NUMERIC\|NUMBER)#i', $row['Type']);
157			}
158			$cols = '(' . implode(', ', $cols) . ')';
159			$res->close();
160
161			echo $this->mysqliUseResult($mode, $table, $numeric, $cols, $view, $handle);
162			}
163			}
164
165			private function mysqliUseResult($mode, $table, $numeric, $cols, $view, $handle) {
166			$this->size = 0;
167			$res = $this->connection->query("SELECT * FROM $this->delTable", MYSQLI_USE_RESULT);
168			while ($row = $res->fetch_assoc()) {
169			$s = '(';
170			foreach ($row as $key => $value) {
171			if ($value === null) {
172			$s .= "NULL,\t";
173			} elseif ($numeric[$key]) {
174			$s .= $value . ",\t";
175			} else {
176			$s .= "'" . $this->connection->real_escape_string($value) . "',\t";
177			}
178			}
179
180			echo $this->checkSizendLen($cols, $s, $handle);
			0 ignored issues – show Bug introduced 2020-06-27 07:32 UTC by Report Bug Copy Issue Report Are you sure the usage of `$this->checkSizendLen($cols, $s, $handle)` targeting `Ballybran\Database\MySQLDump::checkSizendLen()` seems to always return null. This check looks for function or method calls that always return null and whose return value is used. class A { function getObject() { return null; } } $a = new A(); if ($a->getObject()) { The method `getObject()` can return nothing but null, so it makes no sense to use the return value. The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes. Loading history...
181			}
182
183			$res->close();
184			if ($this->size) {
185			fwrite($handle, ";\n");
186			}
187			fwrite($handle, 'ALTER ' . ($view ? 'VIEW' : 'TABLE') . ' ' . $this->delTable . " ENABLE KEYS;\n\n");
188			fwrite($handle, "\n");
189
190
191
192			echo $this->trigger($mode, $handle, $table);
193
194			fwrite($handle, "\n");
195
196			}
197			private function checkSizendLen($cols, $s, $handle) {
198
199			if ($this->size == 0) {
200			$s = "INSERT INTO $this->delTable $cols VALUES\n$s";
201			} else {
202			$s = ",\n$s";
203			}
204
205			$len = strlen($s) - 1;
206			$s[$len - 1] = ')';
207			fwrite($handle, $s, $len);
208
209			$this->size += $len;
210			if ($this->size > self::MAX_SQL_SIZE) {
211			fwrite($handle, ";\n");
212			$this->size = 0;
213			}
214			}
215			private function trigger($mode, $handle, $table) {
216			if ($mode & self::TRIGGERS) {
217			$res = $this->connection->query("SHOW TRIGGERS LIKE '" . $this->connection->real_escape_string($table) . "'");
218			if ($res->num_rows) {
219			fwrite($handle, "DELIMITER ;;\n\n");
220			while ($row = $res->fetch_assoc()) {
221			fwrite($handle, "CREATE TRIGGER {$this->delimite($row['Trigger'])} $row[Timing] $row[Event] ON $this->delTable FOR EACH ROW\n$row[Statement];;\n\n");
222			}
223			fwrite($handle, "DELIMITER ;\n\n");
224			}
225			$res->close();
226			}
227
228			}
229
230
231			private function delimite($s)
232			{
233			return '`' . str_replace('`', '``', $s) . '`';
234			}
235
236			}
237

knut7 / framework

MySQLDump::checkSizendLen() A last analyzed 2021-04-14 10:14 UTC

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like

MySQLDump::checkSizendLen() A
last analyzed 2021-04-14 10:14 UTC