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Diffstat (limited to 'paste/include/generator/ShortGenerator.php')
-rw-r--r-- | paste/include/generator/ShortGenerator.php | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/paste/include/generator/ShortGenerator.php b/paste/include/generator/ShortGenerator.php new file mode 100644 index 0000000..320ff10 --- /dev/null +++ b/paste/include/generator/ShortGenerator.php @@ -0,0 +1,63 @@ +<?php +/* +This software is licensed through a BSD-style License. +http://www.opensource.org/licenses/bsd-license.php + +Copyright (c) 2009 Alexander Sulfrian +All rights reserved. + +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 Jacob D. Cohen 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 COPYRIGHT +OWNER 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. +*/ + +require_once('IdGeneratorEngine.php'); + +class ShortGenerator extends IdGeneratorEngine +{ + //const $codeset = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; + //readable character set excluded (0,O,1,l) + const codeset = "23456789abcdefghijkmnopqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ"; + + static private function bcFloor($x) + { + return bcmul($x, '1', 0); + } + + public function generateId() + { + $base = strlen(self::codeset); + $converted = ''; + + // id source (time + random) + $n = intval(time() . rand(1000, getrandmax())); + + while ($n > 0) { + $converted = substr(self::codeset, bcmod($n, $base), 1) . $converted; + $n = self::bcFloor(bcdiv($n, $base)); + } + + return $converted; + } +} |