jenkins-bot has submitted this change and it was merged. Change subject: Add cdb/cdb 1.0.0 ......................................................................
Add cdb/cdb 1.0.0 Change-Id: I98302bdf16b210143f0bdc6014ff2a3acc1464d8 --- A cdb/cdb/.gitignore A cdb/cdb/.gitreview A cdb/cdb/COPYING A cdb/cdb/README.md A cdb/cdb/composer.json A cdb/cdb/src/Exception.php A cdb/cdb/src/Reader.php A cdb/cdb/src/Reader/DBA.php A cdb/cdb/src/Reader/PHP.php A cdb/cdb/src/Util.php A cdb/cdb/src/Writer.php A cdb/cdb/src/Writer/DBA.php A cdb/cdb/src/Writer/PHP.php A cdb/cdb/test/CdbTest.php M composer.json M composer.lock M composer/autoload_classmap.php M composer/installed.json 18 files changed, 1,464 insertions(+), 1 deletion(-) Approvals: BryanDavis: Looks good to me, approved Chad: Looks good to me, but someone else must approve jenkins-bot: Verified diff --git a/cdb/cdb/.gitignore b/cdb/cdb/.gitignore new file mode 100644 index 0000000..d1502b0 --- /dev/null +++ b/cdb/cdb/.gitignore @@ -0,0 +1,2 @@ +vendor/ +composer.lock diff --git a/cdb/cdb/.gitreview b/cdb/cdb/.gitreview new file mode 100644 index 0000000..5eb18ac --- /dev/null +++ b/cdb/cdb/.gitreview @@ -0,0 +1,6 @@ +[gerrit] +host=gerrit.wikimedia.org +port=29418 +project=cdb.git +defaultbranch=master +defaultrebase=0 diff --git a/cdb/cdb/COPYING b/cdb/cdb/COPYING new file mode 100644 index 0000000..019694a --- /dev/null +++ b/cdb/cdb/COPYING @@ -0,0 +1,342 @@ +== GNU GENERAL PUBLIC LICENSE == + +Version 2, June 1991 + +Copyright (C) 1989, 1991 Free Software Foundation, Inc. +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA +Everyone is permitted to copy and distribute verbatim copies +of this license document, but changing it is not allowed. + +=== Preamble === + +The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + +When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + +To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + +For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + +We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + +Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + +Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + +The precise terms and conditions for copying, distribution and +modification follow. + +== TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION == + +'''0.''' This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) 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You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + +'''2.''' 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + + Copyright (C) <year> <name of author> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/cdb/cdb/README.md b/cdb/cdb/README.md new file mode 100644 index 0000000..1138265 --- /dev/null +++ b/cdb/cdb/README.md @@ -0,0 +1,9 @@ +CDB functions for PHP +===================== + +This library wraps the constant database (CDB) functionality exposed in PHP +via the dba_* functions. In cases where dba_* functions are not present or +are not compiled with CDB support, a pure-PHP implementation is provided for +falling back. + +http://cr.yp.to/cdb.html diff --git a/cdb/cdb/composer.json b/cdb/cdb/composer.json new file mode 100644 index 0000000..fed2a4f --- /dev/null +++ b/cdb/cdb/composer.json @@ -0,0 +1,26 @@ +{ + "name": "cdb/cdb", + "description": "Constant Database (CDB) wrapper library for PHP. Provides pure-PHP fallback when dba_* functions are absent.", + "license": "GPLv2", + "homepage": "https://www.mediawiki.org/wiki/CDB";, + "authors": [ + { + "name": "Tim Starling", + "email": "[email protected]" + }, + { + "name": "Chad Horohoe", + "email": "[email protected]" + } + ], + "minimum-stability": "dev", + "require": { + "php": ">=5.3.2" + }, + "require-dev": { + "phpunit/phpunit": "*" + }, + "autoload": { + "classmap": ["src/"] + } +} diff --git a/cdb/cdb/src/Exception.php b/cdb/cdb/src/Exception.php new file mode 100644 index 0000000..76a59da --- /dev/null +++ b/cdb/cdb/src/Exception.php @@ -0,0 +1,28 @@ +<?php + +namespace Cdb; + +/** + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * Exception for Cdb errors. + */ +class Exception extends \Exception { +} diff --git a/cdb/cdb/src/Reader.php b/cdb/cdb/src/Reader.php new file mode 100644 index 0000000..2df06ab --- /dev/null +++ b/cdb/cdb/src/Reader.php @@ -0,0 +1,85 @@ +<?php + +namespace Cdb; + +/** + * Native CDB file reader and writer. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * Read from a CDB file. + * Native and pure PHP implementations are provided. + * http://cr.yp.to/cdb.html + */ +abstract class Reader { + /** + * The file handle + */ + protected $handle; + + /** + * Open a file and return a subclass instance + * + * @param string $fileName + * + * @return Reader + */ + public static function open( $fileName ) { + return self::haveExtension() ? + new Reader\DBA( $fileName ) : + new Reader\PHP( $fileName ); + } + + /** + * Returns true if the native extension is available + * + * @return bool + */ + public static function haveExtension() { + if ( !function_exists( 'dba_handlers' ) ) { + return false; + } + $handlers = dba_handlers(); + if ( !in_array( 'cdb', $handlers ) || !in_array( 'cdb_make', $handlers ) ) { + return false; + } + + return true; + } + + /** + * Create the object and open the file + * + * @param string $fileName + */ + abstract public function __construct( $fileName ); + + /** + * Close the file. Optional, you can just let the variable go out of scope. + */ + abstract public function close(); + + /** + * Get a value with a given key. Only string values are supported. + * + * @param string $key + */ + abstract public function get( $key ); +} diff --git a/cdb/cdb/src/Reader/DBA.php b/cdb/cdb/src/Reader/DBA.php new file mode 100644 index 0000000..838bf6e --- /dev/null +++ b/cdb/cdb/src/Reader/DBA.php @@ -0,0 +1,49 @@ +<?php + +namespace Cdb\Reader; +use Cdb\Exception; +use Cdb\Reader; + +/** + * DBA-based CDB reader/writer + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * Reader class which uses the DBA extension + */ +class DBA extends Reader { + public function __construct( $fileName ) { + $this->handle = dba_open( $fileName, 'r-', 'cdb' ); + if ( !$this->handle ) { + throw new Exception( 'Unable to open CDB file "' . $fileName . '"' ); + } + } + + public function close() { + if ( isset( $this->handle ) ) { + dba_close( $this->handle ); + } + unset( $this->handle ); + } + + public function get( $key ) { + return dba_fetch( $key, $this->handle ); + } +} diff --git a/cdb/cdb/src/Reader/PHP.php b/cdb/cdb/src/Reader/PHP.php new file mode 100644 index 0000000..57b7d8c --- /dev/null +++ b/cdb/cdb/src/Reader/PHP.php @@ -0,0 +1,220 @@ +<?php + +namespace Cdb\Reader; +use Cdb\Exception; +use Cdb\Reader; +use Cdb\Util; + +/** + * This is a port of D.J. Bernstein's CDB to PHP. It's based on the copy that + * appears in PHP 5.3. Changes are: + * * Error returns replaced with exceptions + * * Exception thrown if sizes or offsets are between 2GB and 4GB + * * Some variables renamed + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * CDB reader class + */ +class PHP extends Reader { + /** The filename */ + protected $fileName; + + /* number of hash slots searched under this key */ + protected $loop; + + /* initialized if loop is nonzero */ + protected $khash; + + /* initialized if loop is nonzero */ + protected $kpos; + + /* initialized if loop is nonzero */ + protected $hpos; + + /* initialized if loop is nonzero */ + protected $hslots; + + /* initialized if findNext() returns true */ + protected $dpos; + + /* initialized if cdb_findnext() returns 1 */ + protected $dlen; + + /** + * @param string $fileName + * @throws Exception + */ + public function __construct( $fileName ) { + $this->fileName = $fileName; + $this->handle = fopen( $fileName, 'rb' ); + if ( !$this->handle ) { + throw new Exception( 'Unable to open CDB file "' . $this->fileName . '".' ); + } + $this->findStart(); + } + + public function close() { + if ( isset( $this->handle ) ) { + fclose( $this->handle ); + } + unset( $this->handle ); + } + + /** + * @param mixed $key + * @return bool|string + */ + public function get( $key ) { + // strval is required + if ( $this->find( strval( $key ) ) ) { + return $this->read( $this->dlen, $this->dpos ); + } + + return false; + } + + /** + * @param string $key + * @param int $pos + * @return bool + */ + protected function match( $key, $pos ) { + $buf = $this->read( strlen( $key ), $pos ); + + return $buf === $key; + } + + protected function findStart() { + $this->loop = 0; + } + + /** + * @throws Exception + * @param int $length + * @param int $pos + * @return string + */ + protected function read( $length, $pos ) { + if ( fseek( $this->handle, $pos ) == -1 ) { + // This can easily happen if the internal pointers are incorrect + throw new Exception( + 'Seek failed, file "' . $this->fileName . '" may be corrupted.' ); + } + + if ( $length == 0 ) { + return ''; + } + + $buf = fread( $this->handle, $length ); + if ( $buf === false || strlen( $buf ) !== $length ) { + throw new Exception( + 'Read from CDB file failed, file "' . $this->fileName . '" may be corrupted.' ); + } + + return $buf; + } + + /** + * Unpack an unsigned integer and throw an exception if it needs more than 31 bits + * @param string $s + * @throws Exception + * @return mixed + */ + protected function unpack31( $s ) { + $data = unpack( 'V', $s ); + if ( $data[1] > 0x7fffffff ) { + throw new Exception( + 'Error in CDB file "' . $this->fileName . '", integer too big.' ); + } + + return $data[1]; + } + + /** + * Unpack a 32-bit signed integer + * @param string $s + * @return int + */ + protected function unpackSigned( $s ) { + $data = unpack( 'va/vb', $s ); + + return $data['a'] | ( $data['b'] << 16 ); + } + + /** + * @param string $key + * @return bool + */ + protected function findNext( $key ) { + if ( !$this->loop ) { + $u = Util::hash( $key ); + $buf = $this->read( 8, ( $u << 3 ) & 2047 ); + $this->hslots = $this->unpack31( substr( $buf, 4 ) ); + if ( !$this->hslots ) { + return false; + } + $this->hpos = $this->unpack31( substr( $buf, 0, 4 ) ); + $this->khash = $u; + $u = Util::unsignedShiftRight( $u, 8 ); + $u = Util::unsignedMod( $u, $this->hslots ); + $u <<= 3; + $this->kpos = $this->hpos + $u; + } + + while ( $this->loop < $this->hslots ) { + $buf = $this->read( 8, $this->kpos ); + $pos = $this->unpack31( substr( $buf, 4 ) ); + if ( !$pos ) { + return false; + } + $this->loop += 1; + $this->kpos += 8; + if ( $this->kpos == $this->hpos + ( $this->hslots << 3 ) ) { + $this->kpos = $this->hpos; + } + $u = $this->unpackSigned( substr( $buf, 0, 4 ) ); + if ( $u === $this->khash ) { + $buf = $this->read( 8, $pos ); + $keyLen = $this->unpack31( substr( $buf, 0, 4 ) ); + if ( $keyLen == strlen( $key ) && $this->match( $key, $pos + 8 ) ) { + // Found + $this->dlen = $this->unpack31( substr( $buf, 4 ) ); + $this->dpos = $pos + 8 + $keyLen; + + return true; + } + } + } + + return false; + } + + /** + * @param mixed $key + * @return bool + */ + protected function find( $key ) { + $this->findStart(); + + return $this->findNext( $key ); + } +} + diff --git a/cdb/cdb/src/Util.php b/cdb/cdb/src/Util.php new file mode 100644 index 0000000..fe19509 --- /dev/null +++ b/cdb/cdb/src/Util.php @@ -0,0 +1,100 @@ +<?php + +namespace Cdb; + +/** + * This is a port of D.J. Bernstein's CDB to PHP. It's based on the copy that + * appears in PHP 5.3. Changes are: + * * Error returns replaced with exceptions + * * Exception thrown if sizes or offsets are between 2GB and 4GB + * * Some variables renamed + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * Common functions for readers and writers + */ +class Util { + /** + * Take a modulo of a signed integer as if it were an unsigned integer. + * $b must be less than 0x40000000 and greater than 0 + * + * @param int $a + * @param int $b + * + * @return int + */ + public static function unsignedMod( $a, $b ) { + if ( $a & 0x80000000 ) { + $m = ( $a & 0x7fffffff ) % $b + 2 * ( 0x40000000 % $b ); + + return $m % $b; + } else { + return $a % $b; + } + } + + /** + * Shift a signed integer right as if it were unsigned + * @param int $a + * @param int $b + * @return int + */ + public static function unsignedShiftRight( $a, $b ) { + if ( $b == 0 ) { + return $a; + } + if ( $a & 0x80000000 ) { + return ( ( $a & 0x7fffffff ) >> $b ) | ( 0x40000000 >> ( $b - 1 ) ); + } else { + return $a >> $b; + } + } + + /** + * The CDB hash function. + * + * @param string $s + * + * @return int + */ + public static function hash( $s ) { + $h = 5381; + $len = strlen( $s ); + for ( $i = 0; $i < $len; $i++ ) { + $h5 = ( $h << 5 ) & 0xffffffff; + // Do a 32-bit sum + // Inlined here for speed + $sum = ( $h & 0x3fffffff ) + ( $h5 & 0x3fffffff ); + $h = + ( + ( $sum & 0x40000000 ? 1 : 0 ) + + ( $h & 0x80000000 ? 2 : 0 ) + + ( $h & 0x40000000 ? 1 : 0 ) + + ( $h5 & 0x80000000 ? 2 : 0 ) + + ( $h5 & 0x40000000 ? 1 : 0 ) + ) << 30 + | ( $sum & 0x3fffffff ); + $h ^= ord( $s[$i] ); + $h &= 0xffffffff; + } + + return $h; + } +} diff --git a/cdb/cdb/src/Writer.php b/cdb/cdb/src/Writer.php new file mode 100644 index 0000000..b994ec6 --- /dev/null +++ b/cdb/cdb/src/Writer.php @@ -0,0 +1,99 @@ +<?php + +namespace Cdb; + +/** + * Native CDB file reader and writer. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * Write to a CDB file. + * Native and pure PHP implementations are provided. + * http://cr.yp.to/cdb.html + */ +abstract class Writer { + /** + * The file handle + */ + protected $handle; + + /** + * File we'll be writing to when we're done + * @var string + */ + protected $realFileName; + + /** + * File we write to temporarily until we're done + * @var string + */ + protected $tmpFileName; + + /** + * Open a writer and return a subclass instance. + * The user must have write access to the directory, for temporary file creation. + * + * @param string $fileName + * + * @return Writer + */ + public static function open( $fileName ) { + return Reader::haveExtension() ? + new Writer\DBA( $fileName ) : + new Writer\PHP( $fileName ); + } + + /** + * Create the object and open the file + * + * @param string $fileName + */ + abstract public function __construct( $fileName ); + + /** + * Set a key to a given value. The value will be converted to string. + * @param string $key + * @param string $value + */ + abstract public function set( $key, $value ); + + /** + * Close the writer object. You should call this function before the object + * goes out of scope, to write out the final hashtables. + */ + abstract public function close(); + + /** + * If the object goes out of scope, close it for sanity + */ + public function __destruct() { + if ( isset( $this->handle ) ) { + $this->close(); + } + } + + /** + * Are we running on Windows? + * @return bool + */ + protected function isWindows() { + return substr( php_uname(), 0, 7 ) == 'Windows'; + } +} diff --git a/cdb/cdb/src/Writer/DBA.php b/cdb/cdb/src/Writer/DBA.php new file mode 100644 index 0000000..eb525f4 --- /dev/null +++ b/cdb/cdb/src/Writer/DBA.php @@ -0,0 +1,63 @@ +<?php + +namespace Cdb\Writer; +use Cdb\Exception; +use Cdb\Writer; + +/** + * DBA-based CDB reader/writer + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * Writer class which uses the DBA extension + */ +class DBA extends Writer { + /** + * @throws Exception + */ + public function __construct( $fileName ) { + $this->realFileName = $fileName; + $this->tmpFileName = $fileName . '.tmp.' . mt_rand( 0, 0x7fffffff ); + $this->handle = dba_open( $this->tmpFileName, 'n', 'cdb_make' ); + if ( !$this->handle ) { + throw new Exception( 'Unable to open CDB file for write "' . $fileName . '"' ); + } + } + + public function set( $key, $value ) { + return dba_insert( $key, $value, $this->handle ); + } + + /** + * @throws Exception + */ + public function close() { + if ( isset( $this->handle ) ) { + dba_close( $this->handle ); + } + if ( $this->isWindows() ) { + unlink( $this->realFileName ); + } + if ( !rename( $this->tmpFileName, $this->realFileName ) ) { + throw new Exception( 'Unable to move the new CDB file into place.' ); + } + unset( $this->handle ); + } +} diff --git a/cdb/cdb/src/Writer/PHP.php b/cdb/cdb/src/Writer/PHP.php new file mode 100644 index 0000000..68c6b76 --- /dev/null +++ b/cdb/cdb/src/Writer/PHP.php @@ -0,0 +1,240 @@ +<?php + +namespace Cdb\Writer; +use Cdb\Exception; +use Cdb\Util; +use Cdb\Writer; + +/** + * This is a port of D.J. Bernstein's CDB to PHP. It's based on the copy that + * appears in PHP 5.3. Changes are: + * * Error returns replaced with exceptions + * * Exception thrown if sizes or offsets are between 2GB and 4GB + * * Some variables renamed + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + */ + +/** + * CDB writer class + */ +class PHP extends Writer { + protected $hplist; + + protected $numentries; + + protected $pos; + + /** + * @param string $fileName + */ + public function __construct( $fileName ) { + $this->realFileName = $fileName; + $this->tmpFileName = $fileName . '.tmp.' . mt_rand( 0, 0x7fffffff ); + $this->handle = fopen( $this->tmpFileName, 'wb' ); + if ( !$this->handle ) { + $this->throwException( + 'Unable to open CDB file "' . $this->tmpFileName . '" for write.' ); + } + $this->hplist = array(); + $this->numentries = 0; + $this->pos = 2048; // leaving space for the pointer array, 256 * 8 + if ( fseek( $this->handle, $this->pos ) == -1 ) { + $this->throwException( 'fseek failed in file "' . $this->tmpFileName . '".' ); + } + } + + /** + * @param string $key + * @param string $value + */ + public function set( $key, $value ) { + if ( strval( $key ) === '' ) { + // DBA cross-check hack + return; + } + $this->addbegin( strlen( $key ), strlen( $value ) ); + $this->write( $key ); + $this->write( $value ); + $this->addend( strlen( $key ), strlen( $value ), Util::hash( $key ) ); + } + + /** + * @throws Exception + */ + public function close() { + $this->finish(); + if ( isset( $this->handle ) ) { + fclose( $this->handle ); + } + if ( $this->isWindows() && file_exists( $this->realFileName ) ) { + unlink( $this->realFileName ); + } + if ( !rename( $this->tmpFileName, $this->realFileName ) ) { + $this->throwException( 'Unable to move the new CDB file into place.' ); + } + unset( $this->handle ); + } + + /** + * @throws Exception + * @param string $buf + */ + protected function write( $buf ) { + $len = fwrite( $this->handle, $buf ); + if ( $len !== strlen( $buf ) ) { + $this->throwException( 'Error writing to CDB file "' . $this->tmpFileName . '".' ); + } + } + + /** + * @throws Exception + * @param int $len + */ + protected function posplus( $len ) { + $newpos = $this->pos + $len; + if ( $newpos > 0x7fffffff ) { + $this->throwException( + 'A value in the CDB file "' . $this->tmpFileName . '" is too large.' ); + } + $this->pos = $newpos; + } + + /** + * @param int $keylen + * @param int $datalen + * @param int $h + */ + protected function addend( $keylen, $datalen, $h ) { + $this->hplist[] = array( + 'h' => $h, + 'p' => $this->pos + ); + + $this->numentries++; + $this->posplus( 8 ); + $this->posplus( $keylen ); + $this->posplus( $datalen ); + } + + /** + * @throws Exception + * @param int $keylen + * @param int $datalen + */ + protected function addbegin( $keylen, $datalen ) { + if ( $keylen > 0x7fffffff ) { + $this->throwException( 'Key length too long in file "' . $this->tmpFileName . '".' ); + } + if ( $datalen > 0x7fffffff ) { + $this->throwException( 'Data length too long in file "' . $this->tmpFileName . '".' ); + } + $buf = pack( 'VV', $keylen, $datalen ); + $this->write( $buf ); + } + + /** + * @throws Exception + */ + protected function finish() { + // Hack for DBA cross-check + $this->hplist = array_reverse( $this->hplist ); + + // Calculate the number of items that will be in each hashtable + $counts = array_fill( 0, 256, 0 ); + foreach ( $this->hplist as $item ) { + ++$counts[255 & $item['h']]; + } + + // Fill in $starts with the *end* indexes + $starts = array(); + $pos = 0; + for ( $i = 0; $i < 256; ++$i ) { + $pos += $counts[$i]; + $starts[$i] = $pos; + } + + // Excessively clever and indulgent code to simultaneously fill $packedTables + // with the packed hashtables, and adjust the elements of $starts + // to actually point to the starts instead of the ends. + $packedTables = array_fill( 0, $this->numentries, false ); + foreach ( $this->hplist as $item ) { + $packedTables[--$starts[255 & $item['h']]] = $item; + } + + $final = ''; + for ( $i = 0; $i < 256; ++$i ) { + $count = $counts[$i]; + + // The size of the hashtable will be double the item count. + // The rest of the slots will be empty. + $len = $count + $count; + $final .= pack( 'VV', $this->pos, $len ); + + $hashtable = array(); + for ( $u = 0; $u < $len; ++$u ) { + $hashtable[$u] = array( 'h' => 0, 'p' => 0 ); + } + + // Fill the hashtable, using the next empty slot if the hashed slot + // is taken. + for ( $u = 0; $u < $count; ++$u ) { + $hp = $packedTables[$starts[$i] + $u]; + $where = Util::unsignedMod( + Util::unsignedShiftRight( $hp['h'], 8 ), $len ); + while ( $hashtable[$where]['p'] ) { + if ( ++$where == $len ) { + $where = 0; + } + } + $hashtable[$where] = $hp; + } + + // Write the hashtable + for ( $u = 0; $u < $len; ++$u ) { + $buf = pack( 'vvV', + $hashtable[$u]['h'] & 0xffff, + Util::unsignedShiftRight( $hashtable[$u]['h'], 16 ), + $hashtable[$u]['p'] ); + $this->write( $buf ); + $this->posplus( 8 ); + } + } + + // Write the pointer array at the start of the file + rewind( $this->handle ); + if ( ftell( $this->handle ) != 0 ) { + $this->throwException( 'Error rewinding to start of file "' . $this->tmpFileName . '".' ); + } + $this->write( $final ); + } + + /** + * Clean up the temp file and throw an exception + * + * @param string $msg + * @throws Exception + */ + protected function throwException( $msg ) { + if ( $this->handle ) { + fclose( $this->handle ); + unlink( $this->tmpFileName ); + } + throw new Exception( $msg ); + } +} diff --git a/cdb/cdb/test/CdbTest.php b/cdb/cdb/test/CdbTest.php new file mode 100644 index 0000000..920fc11 --- /dev/null +++ b/cdb/cdb/test/CdbTest.php @@ -0,0 +1,95 @@ +<?php + +namespace Cdb\Test; +use Cdb\Reader; +use Cdb\Writer; + +/** + * Test the CDB reader/writer + * @covers Cdb\Writer\PHP + * @covers Cdb\Writer\DBA + */ +class CdbTest extends \PHPUnit_Framework_TestCase { + /** @var string */ + private $phpCdbFile, $dbaCdbFile; + + protected function setUp() { + parent::setUp(); + if ( !Reader::haveExtension() ) { + $this->markTestSkipped( 'Native CDB support is not available.' ); + } + $temp = sys_get_temp_dir(); + if ( !is_writable( $temp ) ) { + $this->markTestSkipped( "Temp dir [$temp] isn't writable." ); + } + $this->phpCdbFile = tempnam( $temp, get_class( $this ) . '_' ); + $this->dbaCdbFile = tempnam( $temp, get_class( $this ) . '_' ); + } + + /** + * Make a random-ish string + * @return string + */ + private static function randomString() { + $len = mt_rand( 0, 10 ); + $s = ''; + for ( $j = 0; $j < $len; $j++ ) { + $s .= chr( mt_rand( 0, 255 ) ); + } + + return $s; + } + + public function testCdbWrite() { + $w1 = new Writer\PHP( $this->phpCdbFile ); + $w2 = new Writer\DBA( $this->dbaCdbFile ); + + $data = array(); + for ( $i = 0; $i < 1000; $i++ ) { + $key = self::randomString(); + $value = self::randomString(); + $w1->set( $key, $value ); + $w2->set( $key, $value ); + + if ( !isset( $data[$key] ) ) { + $data[$key] = $value; + } + } + + $w1->close(); + $w2->close(); + + $this->assertEquals( + md5_file( $this->phpCdbFile ), + md5_file( $this->dbaCdbFile ), + 'same hash' + ); + + $r1 = new Reader\PHP( $this->phpCdbFile ); + $r2 = new Reader\DBA( $this->dbaCdbFile ); + + foreach ( $data as $key => $value ) { + if ( $key === '' ) { + // Known bug + continue; + } + $v1 = $r1->get( $key ); + $v2 = $r2->get( $key ); + + $v1 = $v1 === false ? '(not found)' : $v1; + $v2 = $v2 === false ? '(not found)' : $v2; + + # cdbAssert( 'Mismatch', $key, $v1, $v2 ); + $this->cdbAssert( "PHP error", $key, $v1, $value ); + $this->cdbAssert( "DBA error", $key, $v2, $value ); + } + } + + private function cdbAssert( $msg, $key, $v1, $v2 ) { + $this->assertEquals( + $v2, + $v1, + $msg . ', k=' . bin2hex( $key ) + ); + } +} diff --git a/composer.json b/composer.json index 01047a9..eb7d34f 100644 --- a/composer.json +++ b/composer.json @@ -10,6 +10,7 @@ } ], "require": { + "cdb/cdb": "1.0.0", "cssjanus/cssjanus": "1.1.0", "php": ">=5.3.3", "psr/log": "1.0.0", diff --git a/composer.lock b/composer.lock index 49304cb..32011c7 100644 --- a/composer.lock +++ b/composer.lock @@ -4,7 +4,7 @@ "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file";, "This file is @generated automatically" ], - "hash": "e30b0be860eb92ad74e2d068136f07fb", + "hash": "a45741dc499741d880f1262a2f69f117", "packages": [ { "name": "Plancake/EmailParser", @@ -51,6 +51,50 @@ "time": "2013-09-05 21:02:55" }, { + "name": "cdb/cdb", + "version": "1.0.0", + "source": { + "type": "git", + "url": "https://github.com/wikimedia/cdb.git";, + "reference": "918601ea3d31b8c37312e9c0e54446aa8bfb3425" + }, + "dist": { + "type": "zip", + "url": "https://api.github.com/repos/wikimedia/cdb/zipball/918601ea3d31b8c37312e9c0e54446aa8bfb3425";, + "reference": "918601ea3d31b8c37312e9c0e54446aa8bfb3425", + "shasum": "" + }, + "require": { + "php": ">=5.3.2" + }, + "require-dev": { + "phpunit/phpunit": "*" + }, + "type": "library", + "autoload": { + "classmap": [ + "src/" + ] + }, + "notification-url": "https://packagist.org/downloads/";, + "license": [ + "GPLv2" + ], + "authors": [ + { + "name": "Tim Starling", + "email": "[email protected]" + }, + { + "name": "Chad Horohoe", + "email": "[email protected]" + } + ], + "description": "Constant Database (CDB) wrapper library for PHP. Provides pure-PHP fallback when dba_* functions are absent.", + "homepage": "https://www.mediawiki.org/wiki/CDB";, + "time": "2014-11-12 19:03:26" + }, + { "name": "cssjanus/cssjanus", "version": "v1.1.0", "source": { diff --git a/composer/autoload_classmap.php b/composer/autoload_classmap.php index 7a4b1bd..38a1c08 100644 --- a/composer/autoload_classmap.php +++ b/composer/autoload_classmap.php @@ -8,6 +8,14 @@ return array( 'CSSJanus' => $vendorDir . '/cssjanus/cssjanus/src/CSSJanus.php', 'CSSJanusTokenizer' => $vendorDir . '/cssjanus/cssjanus/src/CSSJanus.php', + 'Cdb\\Exception' => $vendorDir . '/cdb/cdb/src/Exception.php', + 'Cdb\\Reader' => $vendorDir . '/cdb/cdb/src/Reader.php', + 'Cdb\\Reader\\DBA' => $vendorDir . '/cdb/cdb/src/Reader/DBA.php', + 'Cdb\\Reader\\PHP' => $vendorDir . '/cdb/cdb/src/Reader/PHP.php', + 'Cdb\\Util' => $vendorDir . '/cdb/cdb/src/Util.php', + 'Cdb\\Writer' => $vendorDir . '/cdb/cdb/src/Writer.php', + 'Cdb\\Writer\\DBA' => $vendorDir . '/cdb/cdb/src/Writer/DBA.php', + 'Cdb\\Writer\\PHP' => $vendorDir . '/cdb/cdb/src/Writer/PHP.php', 'Monolog\\ErrorHandler' => $vendorDir . '/monolog/monolog/src/Monolog/ErrorHandler.php', 'Monolog\\Formatter\\ChromePHPFormatter' => $vendorDir . '/monolog/monolog/src/Monolog/Formatter/ChromePHPFormatter.php', 'Monolog\\Formatter\\ElasticaFormatter' => $vendorDir . '/monolog/monolog/src/Monolog/Formatter/ElasticaFormatter.php', diff --git a/composer/installed.json b/composer/installed.json index 121ab4f..f8256af 100644 --- a/composer/installed.json +++ b/composer/installed.json @@ -195,5 +195,51 @@ "logging", "psr-3" ] + }, + { + "name": "cdb/cdb", + "version": "1.0.0", + "version_normalized": "1.0.0.0", + "source": { + "type": "git", + "url": "https://github.com/wikimedia/cdb.git";, + "reference": "918601ea3d31b8c37312e9c0e54446aa8bfb3425" + }, + "dist": { + "type": "zip", + "url": "https://api.github.com/repos/wikimedia/cdb/zipball/918601ea3d31b8c37312e9c0e54446aa8bfb3425";, + "reference": "918601ea3d31b8c37312e9c0e54446aa8bfb3425", + "shasum": "" + }, + "require": { + "php": ">=5.3.2" + }, + "require-dev": { + "phpunit/phpunit": "*" + }, + "time": "2014-11-12 19:03:26", + "type": "library", + "installation-source": "dist", + "autoload": { + "classmap": [ + "src/" + ] + }, + "notification-url": "https://packagist.org/downloads/";, + "license": [ + "GPLv2" + ], + "authors": [ + { + "name": "Tim Starling", + "email": "[email protected]" + }, + { + "name": "Chad Horohoe", + "email": "[email protected]" + } + ], + "description": "Constant Database (CDB) wrapper library for PHP. Provides pure-PHP fallback when dba_* functions are absent.", + "homepage": "https://www.mediawiki.org/wiki/CDB"; } ] -- To view, visit https://gerrit.wikimedia.org/r/172793 To unsubscribe, visit https://gerrit.wikimedia.org/r/settings Gerrit-MessageType: merged Gerrit-Change-Id: I98302bdf16b210143f0bdc6014ff2a3acc1464d8 Gerrit-PatchSet: 2 Gerrit-Project: mediawiki/vendor Gerrit-Branch: master Gerrit-Owner: Legoktm <[email protected]> Gerrit-Reviewer: BryanDavis <[email protected]> Gerrit-Reviewer: Chad <[email protected]> Gerrit-Reviewer: jenkins-bot <> _______________________________________________ MediaWiki-commits mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/mediawiki-commits
