1 | <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
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2 | /** |
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3 | * CodeIgniter |
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4 | * |
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5 | * An open source application development framework for PHP 5.1.6 or newer |
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6 | * |
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7 | * @package CodeIgniter |
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8 | * @author ExpressionEngine Dev Team |
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9 | * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. |
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10 | * @license http://codeigniter.com/user_guide/license.html |
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11 | * @link http://codeigniter.com |
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12 | * @since Version 1.0 |
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13 | * @filesource |
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14 | */ |
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15 | |
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16 | // ------------------------------------------------------------------------ |
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17 | |
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18 | /** |
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19 | * CodeIgniter URL Helpers |
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20 | * |
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21 | * @package CodeIgniter |
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22 | * @subpackage Helpers |
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23 | * @category Helpers |
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24 | * @author ExpressionEngine Dev Team |
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25 | * @link http://codeigniter.com/user_guide/helpers/url_helper.html |
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26 | */ |
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27 | |
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28 | // ------------------------------------------------------------------------ |
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29 | |
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30 | /** |
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31 | * Site URL |
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32 | * |
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33 | * Create a local URL based on your basepath. Segments can be passed via the |
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34 | * first parameter either as a string or an array. |
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35 | * |
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36 | * @access public |
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37 | * @param string |
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38 | * @return string |
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39 | */ |
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40 | if ( ! function_exists('site_url')) |
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41 | { |
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42 | function site_url($uri = '') |
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43 | { |
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44 | $CI =& get_instance(); |
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45 | return $CI->config->site_url($uri); |
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46 | } |
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47 | } |
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48 | |
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49 | // ------------------------------------------------------------------------ |
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50 | |
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51 | /** |
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52 | * Base URL |
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53 | * |
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54 | * Create a local URL based on your basepath. |
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55 | * Segments can be passed in as a string or an array, same as site_url |
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56 | * or a URL to a file can be passed in, e.g. to an image file. |
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57 | * |
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58 | * @access public |
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59 | * @param string |
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60 | * @return string |
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61 | */ |
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62 | if ( ! function_exists('base_url')) |
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63 | { |
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64 | function base_url($uri = '') |
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65 | { |
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66 | $CI =& get_instance(); |
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67 | return $CI->config->base_url($uri); |
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68 | } |
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69 | } |
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70 | |
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71 | // ------------------------------------------------------------------------ |
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72 | |
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73 | /** |
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74 | * Current URL |
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75 | * |
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76 | * Returns the full URL (including segments) of the page where this |
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77 | * function is placed |
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78 | * |
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79 | * @access public |
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80 | * @return string |
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81 | */ |
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82 | if ( ! function_exists('current_url')) |
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83 | { |
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84 | function current_url() |
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85 | { |
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86 | $CI =& get_instance(); |
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87 | return $CI->config->site_url($CI->uri->uri_string()); |
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88 | } |
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89 | } |
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90 | |
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91 | // ------------------------------------------------------------------------ |
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92 | /** |
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93 | * URL String |
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94 | * |
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95 | * Returns the URI segments. |
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96 | * |
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97 | * @access public |
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98 | * @return string |
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99 | */ |
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100 | if ( ! function_exists('uri_string')) |
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101 | { |
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102 | function uri_string() |
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103 | { |
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104 | $CI =& get_instance(); |
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105 | return $CI->uri->uri_string(); |
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106 | } |
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107 | } |
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108 | |
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109 | // ------------------------------------------------------------------------ |
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110 | |
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111 | /** |
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112 | * Index page |
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113 | * |
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114 | * Returns the "index_page" from your config file |
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115 | * |
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116 | * @access public |
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117 | * @return string |
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118 | */ |
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119 | if ( ! function_exists('index_page')) |
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120 | { |
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121 | function index_page() |
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122 | { |
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123 | $CI =& get_instance(); |
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124 | return $CI->config->item('index_page'); |
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125 | } |
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126 | } |
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127 | |
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128 | // ------------------------------------------------------------------------ |
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129 | |
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130 | /** |
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131 | * Anchor Link |
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132 | * |
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133 | * Creates an anchor based on the local URL. |
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134 | * |
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135 | * @access public |
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136 | * @param string the URL |
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137 | * @param string the link title |
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138 | * @param mixed any attributes |
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139 | * @return string |
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140 | */ |
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141 | if ( ! function_exists('anchor')) |
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142 | { |
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143 | function anchor($uri = '', $title = '', $attributes = '') |
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144 | { |
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145 | $title = (string) $title; |
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146 | |
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147 | if ( ! is_array($uri)) |
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148 | { |
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149 | $site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri; |
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150 | } |
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151 | else |
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152 | { |
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153 | $site_url = site_url($uri); |
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154 | } |
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155 | |
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156 | if ($title == '') |
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157 | { |
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158 | $title = $site_url; |
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159 | } |
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160 | |
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161 | if ($attributes != '') |
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162 | { |
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163 | $attributes = _parse_attributes($attributes); |
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164 | } |
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165 | |
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166 | return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>'; |
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167 | } |
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168 | } |
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169 | |
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170 | // ------------------------------------------------------------------------ |
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171 | |
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172 | /** |
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173 | * Anchor Link - Pop-up version |
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174 | * |
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175 | * Creates an anchor based on the local URL. The link |
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176 | * opens a new window based on the attributes specified. |
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177 | * |
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178 | * @access public |
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179 | * @param string the URL |
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180 | * @param string the link title |
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181 | * @param mixed any attributes |
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182 | * @return string |
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183 | */ |
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184 | if ( ! function_exists('anchor_popup')) |
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185 | { |
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186 | function anchor_popup($uri = '', $title = '', $attributes = FALSE) |
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187 | { |
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188 | $title = (string) $title; |
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189 | |
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190 | $site_url = ( ! preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri; |
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191 | |
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192 | if ($title == '') |
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193 | { |
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194 | $title = $site_url; |
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195 | } |
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196 | |
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197 | if ($attributes === FALSE) |
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198 | { |
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199 | return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>"; |
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200 | } |
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201 | |
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202 | if ( ! is_array($attributes)) |
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203 | { |
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204 | $attributes = array(); |
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205 | } |
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206 | |
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207 | foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val) |
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208 | { |
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209 | $atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key]; |
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210 | unset($attributes[$key]); |
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211 | } |
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212 | |
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213 | if ($attributes != '') |
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214 | { |
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215 | $attributes = _parse_attributes($attributes); |
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216 | } |
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217 | |
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218 | return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\"$attributes>".$title."</a>"; |
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219 | } |
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220 | } |
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221 | |
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222 | // ------------------------------------------------------------------------ |
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223 | |
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224 | /** |
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225 | * Mailto Link |
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226 | * |
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227 | * @access public |
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228 | * @param string the email address |
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229 | * @param string the link title |
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230 | * @param mixed any attributes |
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231 | * @return string |
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232 | */ |
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233 | if ( ! function_exists('mailto')) |
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234 | { |
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235 | function mailto($email, $title = '', $attributes = '') |
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236 | { |
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237 | $title = (string) $title; |
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238 | |
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239 | if ($title == "") |
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240 | { |
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241 | $title = $email; |
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242 | } |
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243 | |
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244 | $attributes = _parse_attributes($attributes); |
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245 | |
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246 | return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>'; |
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247 | } |
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248 | } |
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249 | |
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250 | // ------------------------------------------------------------------------ |
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251 | |
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252 | /** |
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253 | * Encoded Mailto Link |
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254 | * |
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255 | * Create a spam-protected mailto link written in Javascript |
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256 | * |
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257 | * @access public |
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258 | * @param string the email address |
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259 | * @param string the link title |
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260 | * @param mixed any attributes |
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261 | * @return string |
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262 | */ |
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263 | if ( ! function_exists('safe_mailto')) |
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264 | { |
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265 | function safe_mailto($email, $title = '', $attributes = '') |
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266 | { |
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267 | $title = (string) $title; |
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268 | |
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269 | if ($title == "") |
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270 | { |
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271 | $title = $email; |
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272 | } |
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273 | |
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274 | for ($i = 0; $i < 16; $i++) |
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275 | { |
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276 | $x[] = substr('<a href="mailto:', $i, 1); |
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277 | } |
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278 | |
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279 | for ($i = 0; $i < strlen($email); $i++) |
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280 | { |
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281 | $x[] = "|".ord(substr($email, $i, 1)); |
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282 | } |
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283 | |
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284 | $x[] = '"'; |
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285 | |
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286 | if ($attributes != '') |
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287 | { |
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288 | if (is_array($attributes)) |
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289 | { |
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290 | foreach ($attributes as $key => $val) |
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291 | { |
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292 | $x[] = ' '.$key.'="'; |
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293 | for ($i = 0; $i < strlen($val); $i++) |
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294 | { |
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295 | $x[] = "|".ord(substr($val, $i, 1)); |
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296 | } |
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297 | $x[] = '"'; |
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298 | } |
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299 | } |
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300 | else |
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301 | { |
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302 | for ($i = 0; $i < strlen($attributes); $i++) |
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303 | { |
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304 | $x[] = substr($attributes, $i, 1); |
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305 | } |
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306 | } |
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307 | } |
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308 | |
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309 | $x[] = '>'; |
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310 | |
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311 | $temp = array(); |
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312 | for ($i = 0; $i < strlen($title); $i++) |
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313 | { |
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314 | $ordinal = ord($title[$i]); |
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315 | |
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316 | if ($ordinal < 128) |
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317 | { |
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318 | $x[] = "|".$ordinal; |
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319 | } |
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320 | else |
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321 | { |
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322 | if (count($temp) == 0) |
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323 | { |
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324 | $count = ($ordinal < 224) ? 2 : 3; |
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325 | } |
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326 | |
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327 | $temp[] = $ordinal; |
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328 | if (count($temp) == $count) |
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329 | { |
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330 | $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64); |
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331 | $x[] = "|".$number; |
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332 | $count = 1; |
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333 | $temp = array(); |
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334 | } |
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335 | } |
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336 | } |
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337 | |
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338 | $x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>'; |
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339 | |
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340 | $x = array_reverse($x); |
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341 | ob_start(); |
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342 | |
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343 | ?><script type="text/javascript"> |
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344 | //<![CDATA[ |
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345 | var l=new Array(); |
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346 | <?php |
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347 | $i = 0; |
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348 | foreach ($x as $val){ ?>l[<?php echo $i++; ?>]='<?php echo $val; ?>';<?php } ?> |
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349 | |
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350 | for (var i = l.length-1; i >= 0; i=i-1){ |
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351 | if (l[i].substring(0, 1) == '|') document.write("&#"+unescape(l[i].substring(1))+";"); |
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352 | else document.write(unescape(l[i]));} |
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353 | //]]> |
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354 | </script><?php |
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355 | |
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356 | $buffer = ob_get_contents(); |
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357 | ob_end_clean(); |
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358 | return $buffer; |
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359 | } |
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360 | } |
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361 | |
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362 | // ------------------------------------------------------------------------ |
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363 | |
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364 | /** |
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365 | * Auto-linker |
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366 | * |
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367 | * Automatically links URL and Email addresses. |
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368 | * Note: There's a bit of extra code here to deal with |
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369 | * URLs or emails that end in a period. We'll strip these |
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370 | * off and add them after the link. |
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371 | * |
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372 | * @access public |
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373 | * @param string the string |
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374 | * @param string the type: email, url, or both |
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375 | * @param bool whether to create pop-up links |
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376 | * @return string |
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377 | */ |
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378 | if ( ! function_exists('auto_link')) |
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379 | { |
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380 | function auto_link($str, $type = 'both', $popup = FALSE) |
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381 | { |
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382 | if ($type != 'email') |
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383 | { |
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384 | if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches)) |
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385 | { |
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386 | $pop = ($popup == TRUE) ? " target=\"_blank\" " : ""; |
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387 | |
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388 | for ($i = 0; $i < count($matches['0']); $i++) |
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389 | { |
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390 | $period = ''; |
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391 | if (preg_match("|\.$|", $matches['6'][$i])) |
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392 | { |
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393 | $period = '.'; |
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394 | $matches['6'][$i] = substr($matches['6'][$i], 0, -1); |
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395 | } |
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396 | |
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397 | $str = str_replace($matches['0'][$i], |
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398 | $matches['1'][$i].'<a href="http'. |
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399 | $matches['4'][$i].'://'. |
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400 | $matches['5'][$i]. |
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401 | $matches['6'][$i].'"'.$pop.'>http'. |
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402 | $matches['4'][$i].'://'. |
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403 | $matches['5'][$i]. |
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404 | $matches['6'][$i].'</a>'. |
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405 | $period, $str); |
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406 | } |
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407 | } |
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408 | } |
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409 | |
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410 | if ($type != 'url') |
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411 | { |
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412 | if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches)) |
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413 | { |
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414 | for ($i = 0; $i < count($matches['0']); $i++) |
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415 | { |
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416 | $period = ''; |
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417 | if (preg_match("|\.$|", $matches['3'][$i])) |
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418 | { |
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419 | $period = '.'; |
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420 | $matches['3'][$i] = substr($matches['3'][$i], 0, -1); |
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421 | } |
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422 | |
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423 | $str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str); |
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424 | } |
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425 | } |
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426 | } |
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427 | |
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428 | return $str; |
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429 | } |
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430 | } |
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431 | |
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432 | // ------------------------------------------------------------------------ |
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433 | |
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434 | /** |
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435 | * Prep URL |
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436 | * |
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437 | * Simply adds the http:// part if no scheme is included |
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438 | * |
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439 | * @access public |
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440 | * @param string the URL |
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441 | * @return string |
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442 | */ |
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443 | if ( ! function_exists('prep_url')) |
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444 | { |
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445 | function prep_url($str = '') |
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446 | { |
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447 | if ($str == 'http://' OR $str == '') |
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448 | { |
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449 | return ''; |
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450 | } |
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451 | |
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452 | $url = parse_url($str); |
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453 | |
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454 | if ( ! $url OR ! isset($url['scheme'])) |
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455 | { |
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456 | $str = 'http://'.$str; |
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457 | } |
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458 | |
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459 | return $str; |
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460 | } |
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461 | } |
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462 | |
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463 | // ------------------------------------------------------------------------ |
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464 | |
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465 | /** |
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466 | * Create URL Title |
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467 | * |
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468 | * Takes a "title" string as input and creates a |
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469 | * human-friendly URL string with a "separator" string |
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470 | * as the word separator. |
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471 | * |
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472 | * @access public |
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473 | * @param string the string |
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474 | * @param string the separator |
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475 | * @return string |
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476 | */ |
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477 | if ( ! function_exists('url_title')) |
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478 | { |
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479 | function url_title($str, $separator = '-', $lowercase = FALSE) |
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480 | { |
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481 | if ($separator == 'dash') |
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482 | { |
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483 | $separator = '-'; |
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484 | } |
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485 | else if ($separator == 'underscore') |
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486 | { |
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487 | $separator = '_'; |
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488 | } |
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489 | |
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490 | $q_separator = preg_quote($separator); |
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491 | |
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492 | $trans = array( |
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493 | '&.+?;' => '', |
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494 | '[^a-z0-9 _-]' => '', |
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495 | '\s+' => $separator, |
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496 | '('.$q_separator.')+' => $separator |
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497 | ); |
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498 | |
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499 | $str = strip_tags($str); |
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500 | |
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501 | foreach ($trans as $key => $val) |
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502 | { |
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503 | $str = preg_replace("#".$key."#i", $val, $str); |
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504 | } |
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505 | |
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506 | if ($lowercase === TRUE) |
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507 | { |
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508 | $str = strtolower($str); |
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509 | } |
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510 | |
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511 | return trim($str, $separator); |
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512 | } |
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513 | } |
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514 | |
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515 | // ------------------------------------------------------------------------ |
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516 | |
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517 | /** |
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518 | * Header Redirect |
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519 | * |
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520 | * Header redirect in two flavors |
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521 | * For very fine grained control over headers, you could use the Output |
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522 | * Library's set_header() function. |
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523 | * |
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524 | * @access public |
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525 | * @param string the URL |
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526 | * @param string the method: location or redirect |
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527 | * @return string |
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528 | */ |
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529 | if ( ! function_exists('redirect')) |
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530 | { |
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531 | function redirect($uri = '', $method = 'location', $http_response_code = 302) |
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532 | { |
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533 | if ( ! preg_match('#^https?://#i', $uri)) |
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534 | { |
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535 | $uri = site_url($uri); |
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536 | } |
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537 | |
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538 | switch($method) |
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539 | { |
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540 | case 'refresh' : header("Refresh:0;url=".$uri); |
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541 | break; |
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542 | default : header("Location: ".$uri, TRUE, $http_response_code); |
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543 | break; |
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544 | } |
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545 | exit; |
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546 | } |
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547 | } |
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548 | |
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549 | // ------------------------------------------------------------------------ |
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550 | |
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551 | /** |
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552 | * Parse out the attributes |
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553 | * |
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554 | * Some of the functions use this |
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555 | * |
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556 | * @access private |
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557 | * @param array |
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558 | * @param bool |
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559 | * @return string |
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560 | */ |
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561 | if ( ! function_exists('_parse_attributes')) |
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562 | { |
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563 | function _parse_attributes($attributes, $javascript = FALSE) |
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564 | { |
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565 | if (is_string($attributes)) |
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566 | { |
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567 | return ($attributes != '') ? ' '.$attributes : ''; |
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568 | } |
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569 | |
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570 | $att = ''; |
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571 | foreach ($attributes as $key => $val) |
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572 | { |
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573 | if ($javascript == TRUE) |
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574 | { |
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575 | $att .= $key . '=' . $val . ','; |
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576 | } |
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577 | else |
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578 | { |
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579 | $att .= ' ' . $key . '="' . $val . '"'; |
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580 | } |
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581 | } |
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582 | |
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583 | if ($javascript == TRUE AND $att != '') |
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584 | { |
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585 | $att = substr($att, 0, -1); |
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586 | } |
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587 | |
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588 | return $att; |
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589 | } |
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590 | } |
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591 | |
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592 | |
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593 | /* End of file url_helper.php */ |
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594 | /* Location: ./system/helpers/url_helper.php */ |
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