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8d3f8ca12a
The $Id$ keywords were used in Subversion where they can be substituted with filename, last revision number change, last changed date, and last user who changed it. In Git this functionality is different and can be done with Git attribute ident. These need to be defined manually for each file in the .gitattributes file and are afterwards replaced with 40-character hexadecimal blob object name which is based only on the particular file contents. This patch simplifies handling of $Id$ keywords by removing them since they are not used anymore.
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2018 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Stig Sæther Bakken <ssb@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include <stdlib.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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#ifdef PHP_WIN32
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#include "win32/time.h"
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#else
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#include <sys/time.h>
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#endif
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#include "php_lcg.h"
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#include "uniqid.h"
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#ifdef HAVE_GETTIMEOFDAY
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ZEND_TLS struct timeval prev_tv = { 0, 0 };
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/* {{{ proto string uniqid([string prefix [, bool more_entropy]])
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Generates a unique ID */
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PHP_FUNCTION(uniqid)
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{
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char *prefix = "";
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zend_bool more_entropy = 0;
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zend_string *uniqid;
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int sec, usec;
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size_t prefix_len = 0;
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struct timeval tv;
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ZEND_PARSE_PARAMETERS_START(0, 2)
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Z_PARAM_OPTIONAL
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Z_PARAM_STRING(prefix, prefix_len)
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Z_PARAM_BOOL(more_entropy)
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ZEND_PARSE_PARAMETERS_END();
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/* This implementation needs current microsecond to change,
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* hence we poll time until it does. This is much faster than
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* calling usleep(1) which may cause the kernel to schedule
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* another process, causing a pause of around 10ms.
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*/
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do {
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(void)gettimeofday((struct timeval *) &tv, (struct timezone *) NULL);
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} while (tv.tv_sec == prev_tv.tv_sec && tv.tv_usec == prev_tv.tv_usec);
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prev_tv.tv_sec = tv.tv_sec;
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prev_tv.tv_usec = tv.tv_usec;
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sec = (int) tv.tv_sec;
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usec = (int) (tv.tv_usec % 0x100000);
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/* The max value usec can have is 0xF423F, so we use only five hex
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* digits for usecs.
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*/
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if (more_entropy) {
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uniqid = strpprintf(0, "%s%08x%05x%.8F", prefix, sec, usec, php_combined_lcg() * 10);
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} else {
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uniqid = strpprintf(0, "%s%08x%05x", prefix, sec, usec);
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}
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RETURN_STR(uniqid);
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}
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#endif
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/* }}} */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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