<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* CodeIgniter URL Helpers
* CI URL助手
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/helpers/url_helper.html
*/
// ------------------------------------------------------------------------
/**
* Site URL
* 网站网址
*
* Create a local URL based on your basepath. Segments can be passed via the
* first parameter either as a string or an array.
*
* 您的basepath的基础上创建一个本地的URL。段可以通过传递
* 无论是作为一个字符串或数组的第一个参数。
*
*
* @access public
* @param string
* @return string
*/
if ( ! function_exists('site_url'))
{
function site_url($uri = '')
{
$CI =& get_instance();
return $CI->config->site_url($uri);
}
}
// ------------------------------------------------------------------------
/**
* Base URL
* 基本URL
*
* Create a local URL based on your basepath.
* Segments can be passed in as a string or an array, same as site_url
* or a URL to a file can be passed in, e.g. to an image file.
* 您的basepath的基础上创建一个本地的URL。
* 段可以通过一个字符串或数组，一样SITE_URL
* 例如，可以通过*或文件网址到图像文件。
* @access public
* @param string
* @return string
*/
if ( ! function_exists('base_url'))
{
function base_url($uri = '')
{
$CI =& get_instance();
return $CI->config->base_url($uri);
}
}
// ------------------------------------------------------------------------
/**
* Current URL
* 当前的URL
* Returns the full URL (including segments) of the page where this
* function is placed
* 返回完整的URL（包括分部）的页面所在今功能被放置
* @access public
* @return string
*/
if ( ! function_exists('current_url'))
{
function current_url()
{
$CI =& get_instance();
return $CI->config->site_url($CI->uri->uri_string());
}
}
// ------------------------------------------------------------------------
/**
* URL String
* url字符串
*
* Returns the URI segments.
* 返回的URI分部。
* @access public
* @return string
*/
if ( ! function_exists('uri_string'))
{
function uri_string()
{
$CI =& get_instance();
return $CI->uri->uri_string();
}
}
// ------------------------------------------------------------------------
/**
* Index page
* 首页的page
*
* Returns the "index_page" from your config file
* 从你的配置文件返回的“index_page”
* @access public
* @return string
*/
if ( ! function_exists('index_page'))
{
function index_page()
{
$CI =& get_instance();
return $CI->config->item('index_page');
}
}
// ------------------------------------------------------------------------
/**
* Anchor Link
* 锚链接
* Creates an anchor based on the local URL.
* 创建一个基于本地URL的锚。
* @access public
* @param string the URL
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('anchor'))
{
function anchor($uri = '', $title = '', $attributes = '')
{
//转为字符串
$title = (string) $title;
//不为数组 $uri
if ( ! is_array($uri))
{
//preg_match('!^\w+://! i', $uri) 如果没有 http://这个开头的等方面，site_url一下
$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
}
else
{
$site_url = site_url($uri);
}
if ($title == '')
{
$title = $site_url;
}
if ($attributes != '')
{
//进行属性分析 _parse_attributes($attributes);
$attributes = _parse_attributes($attributes);
}
return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
}
}
// ------------------------------------------------------------------------
/**
* Anchor Link - Pop-up version
* 锚链接 - pop-up版
*
* Creates an anchor based on the local URL. The link
* opens a new window based on the attributes specified.
* 创建一个基于本地URL的锚。的链接根据所指定的属性打开一个新窗口。
* @access public
* @param string the URL
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('anchor_popup'))
{
function anchor_popup($uri = '', $title = '', $attributes = FALSE)
{
$title = (string) $title;
$site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
if ($title == '')
{
$title = $site_url;
}
//如果$attributes 为false 用window.open进行打开
if ($attributes === FALSE)
{
return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>";
}
//如果不为数组，重新赋值为数组
if ( ! is_array($attributes))
{
$attributes = array();
}
foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val)
{
$atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key];
unset($attributes[$key]);
}
if ($attributes != '')
{
$attributes = _parse_attributes($attributes);
}
//window.open()还有第三个元素 哦，第三个参数是宽高
return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\"$attributes>".$title."</a>";
}
}
// ------------------------------------------------------------------------
/**
* Mailto Link
* 邮寄地址链接
* @access public
* @param string the email address
* @param string the link title
* @param mixed any attributes
* @return string
*/
if ( ! function_exists('mailto'))
{
//$email 邮箱地址
//$title 标题
//$attributes 参数
function mailto($email, $title = '', $attributes = '')
{
$title = (string) $title;
if ($title == "")
{
$title = $email;
}
$attributes = _parse_attributes($attributes);
return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>';
}
}
// ------------------------------------------------------------------------
/**
* Encoded Mailto Link
* 编码mailto链接
* Create a spam-protected mailto link written in Javascript
* 创建Javascript编写的垃圾邮件保护mailto链接
* @access public
* @param string the email address
* @param string the link title
* @param mixed any attributes
* @return string
*/
//感觉不出来什么
if ( ! function_exists('safe_mailto'))
{
function safe_mailto($email, $title = '', $attributes = '')
{
//字符串
$title = (string) $title;
//标题为空时，用email来填
if ($title == "")
{
$title = $email;
}
//开始循环
for ($i = 0; $i < 16; $i++)
{
$x[] = substr('<a href="mailto:', $i, 1);
}
for ($i = 0; $i < strlen($email); $i++)
{
$x[] = "|".ord(substr($email, $i, 1));
}
$x[] = '"';
if ($attributes != '')
{
if (is_array($attributes))
{
foreach ($attributes as $key => $val)
{
$x[] = ' '.$key.'="';
for ($i = 0; $i < strlen($val); $i++)
{
$x[] = "|".ord(substr($val, $i, 1));
}
$x[] = '"';
}
}
else
{
for ($i = 0; $i < strlen($attributes); $i++)
{
$x[] = substr($attributes, $i, 1);
}
}
}
$x[] = '>';
$temp = array();
for ($i = 0; $i < strlen($title); $i++)
{
$ordinal = ord($title[$i]);
if ($ordinal < 128)
{
$x[] = "|".$ordinal;
}
else
{
if (count($temp) == 0)
{
$count = ($ordinal < 224) ? 2 : 3;
}
$temp[] = $ordinal;
if (count($temp) == $count)
{
$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
$x[] = "|".$number;
$count = 1;
$temp = array();
}
}
}
$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';
$x = array_reverse($x);
ob_start();
?><script type="text/javascript">
//<![CDATA[
var l=new Array();
<?php
$i = 0;
foreach ($x as $val){ ?>l[<?php echo $i++; ?>]='<?php echo $val; ?>';<?php } ?>
for (var i = l.length-1; i >= 0; i=i-1){
if (l[i].substring(0, 1) == '|') document.write("&#"+unescape(l[i].substring(1))+";");
else document.write(unescape(l[i]));}
//]]>
</script><?php
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
}
// ------------------------------------------------------------------------
/**
* Auto-linker
* 自动连接器
*
* Automatically links URL and Email addresses.
* Note: There's a bit of extra code here to deal with
* URLs or emails that end in a period. We'll strip these
* off and add them after the link.
* 自动链接URL和电子邮件地址。
* 注意：这里有一个额外的代码位处理
* URL或电子邮件，在一个时期结束。我们会去除这些
* 关闭，并把它们添加链接后。
* @access public
* @param string the string
* @param string the type: email, url, or both
* @param bool whether to create pop-up links
* @return string
*/
if ( ! function_exists('auto_link'))
{
function auto_link($str, $type = 'both', $popup = FALSE)
{
if ($type != 'email')
{
if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
{
$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
for ($i = 0; $i < count($matches['0']); $i++)
{
$period = '';
if (preg_match("|\.$|", $matches['6'][$i]))
{
$period = '.';
$matches['6'][$i] = substr($matches['6'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i],
$matches['1'][$i].'<a href="http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'"'.$pop.'>http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'</a>'.
$period, $str);
}
}
}
if ($type != 'url')
{
if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
{
for ($i = 0; $i < count($matches['0']); $i++)
{
$period = '';
if (preg_match("|\.$|", $matches['3'][$i]))
{
$period = '.';
$matches['3'][$i] = substr($matches['3'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
}
}
}
return $str;
}
}
// ------------------------------------------------------------------------
/**
* Prep URL
* 准备网址
* Simply adds the http:// part if no scheme is included
* 只需添加http://部分如果没有计划包括，
* @access public
* @param string the URL
* @return string
*/
if ( ! function_exists('prep_url'))
{
function prep_url($str = '')
{
if ($str == 'http://' OR $str == '')
{
return '';
}
$url = parse_url($str);
if ( ! $url OR ! isset($url['scheme']))
{
$str = 'http://'.$str;
}
return $str;
}
}
// ------------------------------------------------------------------------
/**
* Create URL Title
* 创建URL标题
*
* Takes a "title" string as input and creates a
* human-friendly URL string with a "separator" string
* as the word separator.
* *拍摄“标题”字符串作为输入，
* 并创建一个人性化的“分隔符”字符串的URL字符串单词分隔符。
* @access public
* @param string the string
* @param string the separator
* @return string
*/
if ( ! function_exists('url_title'))
{
function url_title($str, $separator = '-', $lowercase = FALSE)
{
//
if ($separator == 'dash')
{
$separator = '-';
}
else if ($separator == 'underscore')
{
$separator = '_';
}
//preg_quote() 转义正则表达式字符
//preg_quote() 需要参数str并向其中每个正则表式语法中的字符前增加一个反斜线，这通常用于你有一些运行时字符串，需要作为正则表达式进行匹配的时候
//正则表达式特殊字符有： . \ + * ? [ ^ ] $ ( ) { } = ! < > | : -
$q_separator = preg_quote($separator);
$trans = array(
'&.+?;' => '',
'[^a-z0-9 _-]' => '',
'\s+' => $separator,
'('.$q_separator.')+' => $separator
);
$str = strip_tags($str);
foreach ($trans as $key => $val)
{
$str = preg_replace("#".$key."#i", $val, $str);
}
if ($lowercase === TRUE)
{
$str = strtolower($str);
}
return trim($str, $separator);
}
}
// ------------------------------------------------------------------------
/**
* Header Redirect
* 头重定向
*
* Header redirect in two flavors
* For very fine grained control over headers, you could use the Output
* Library's set_header() function.
* 头重定向两种口味
* 头非常细粒度的控制，你可以使用输出
* 图书馆set_header（）函数。
* @access public
* @param string the URL
* @param string the method: location or redirect
* @return string
*/
if ( ! function_exists('redirect'))
{
function redirect($uri = '', $method = 'location', $http_response_code = 302)
{
//如果不是以https?开头的话
if ( ! preg_match('#^https?://#i', $uri))
{
$uri = site_url($uri);
}
//refresh
switch($method)
{
//1.隔5秒种自动刷新页面:
//<meta http-equiv="refresh" content="5" />
//2.隔5秒种自动转到链接地址的页面:
//<meta http-equiv="refresh" content="5; url=链接地址" />
case 'refresh' : header("Refresh:0;url=".$uri);
break;
default : header("Location: ".$uri, TRUE, $http_response_code);
break;
}
exit;
}
}
// ------------------------------------------------------------------------
/**
* Parse out the attributes
* 解析出的属性
* Some of the functions use this
* 有些功能使用此
* @access private
* @param array
* @param bool
* @return string
*/
if ( ! function_exists('_parse_attributes'))
{
function _parse_attributes($attributes, $javascript = FALSE)
{
//如果为字符串 直接返回
if (is_string($attributes))
{
return ($attributes != '') ? ' '.$attributes : '';
}
$att = '';
//开始循环
foreach ($attributes as $key => $val)
{
//如果为$javascript 为true
if ($javascript == TRUE)
{
//
$att .= $key . '=' . $val . ',';
}
else
{
$att .= ' ' . $key . '="' . $val . '"';
}
}
if ($javascript == TRUE AND $att != '')
{
$att = substr($att, 0, -1);
}
return $att;
}
}
/* End of file url_helper.php */
/* Location: ./system/helpers/url_helper.php */
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