PHP utf8::from_iso8859方法代码示例

//.........这里部分代码省略.........
     global $context;
     // sanity check
     if (!trim($entity)) {
         return NULL;
     }
     // split headers and body
     if (!($position = strpos($entity, "\n\n"))) {
         Logger::remember('agents/messages.php: Can not split header and body', $entity);
         return NULL;
     }
     // parse and decode all headers
     $entity_headers = Messages::parse_headers(substr($entity, 0, $position));
     if (!$entity_headers) {
         $entity_headers[] = array('name' => 'Content-Type', 'value' => 'text/plain; charset=us-ascii');
     }
     // determine content encoding
     $content_transfer_encoding = '7bit';
     foreach ($entity_headers as $header) {
         if (preg_match('/Content-Transfer-Encoding/i', $header['name'])) {
             $content_transfer_encoding = $header['value'];
             break;
         }
     }
     // decode the entity
     $content = Messages::decode(substr($entity, $position + 2), $content_transfer_encoding);
     // determine content type
     $content_type = 'text/plain';
     foreach ($entity_headers as $header) {
         if (preg_match('/Content-Type/i', $header['name'])) {
             $content_type = $header['value'];
             break;
         }
     }
     // nothing has been created yet
     $reference = NULL;
     // text type -- create a page or a comment out of it
     if (preg_match('/^text\\//i', $content_type)) {
         // transcode content, if necessary
         if (preg_match('/-(8859|1252)/', $content_type)) {
             $content = utf8::from_iso8859($content);
         }
         $reference = Messages::submit_page($entity_headers, $content, $user, $anchor, $target);
         // image type -- save as an image file and create a page to reference it
     } elseif (preg_match('/^image\\//i', $content_type)) {
         $reference = Messages::submit_image($entity_headers, $content, $user, $anchor, $target);
         // audio, video or application types -- create a page and attache the file to it
     } elseif (preg_match('/^(audio|video|application)\\//i', $content_type)) {
         $reference = Messages::submit_file($entity_headers, $content, $user, $anchor, $target);
         // multipart -- split entities and process each of them
     } elseif (preg_match('/^multipart\\//i', $content_type)) {
         // look for the boundary
         if (!preg_match('/boundary="*([a-zA-Z0-9\'\\(\\)\\+_,-\\.\\/:=\\?]+)"*\\s*/i', $content_type, $matches)) {
             Logger::remember('agents/messages.php: No multipart boundary in ' . $content_type, $content_type);
             return NULL;
         }
         // split entities
         $entities = explode('--' . $matches[1], $content);
         if (@count($entities) < 3) {
             Logger::remember('agents/messages.php: Empty multipart message', $content);
             return NULL;
         }
         // if multipart/alternative, select only one entity
         if (preg_match('/^multipart\\/alternative/i', $content_type)) {
             // ignore preamble and epilogue parts; start from the end
             for ($index = count($entities) - 1; $index > 1; $index--) {
                 // stop when we actually create some content
                 if ($reference = Messages::process_entity($entities[count($entities) - 2], $user, $anchor, $target)) {
                     break;
                 }
             }
             // we have a mix of entities to save
         } else {
             // skip preamble and epilogue
             for ($index = 1; $index < count($entities) - 1; $index++) {
                 // process one entity
                 $reference = Messages::process_entity($entities[$index], $user, $anchor, $target);
                 // post everything at the same place
                 if (!$anchor) {
                     $anchor = $reference;
                 }
                 // combine all elements at one single place
                 if (!$target) {
                     $target = $reference;
                 }
             }
         }
         // message/delivery-status -- create a page or a comment out of it
     } elseif (preg_match('/^message\\/delivery-status/i', $content_type)) {
         $reference = Messages::submit_page($entity_headers, nl2br($content), $user, $anchor, $target);
         // message/rfc822 -- process it as the main entity
     } elseif (preg_match('/^message\\/rfc822/i', $content_type)) {
         $reference = Messages::process_entity($entity_headers, $content, $user, $anchor, $target);
         // unknown type
     } else {
         Logger::remember('agents/messages.php: Do not know how to process type ' . $content_type);
         return NULL;
     }
     // job done
     return $reference;
 }

 function parse_cdata($parser, $text)
 {
     // transcode non-UTF-8 data
     if ($this->encoding != 'UTF-8') {
         $text = utf8::from_iso8859($text);
     }
     // skip entry, feed, entries first time we see them
     if ($this->elements_stack[0] == $this->current_field or !$this->current_field) {
         return;
     }
     // we are describing a feed
     if ($this->elements_stack[0] == 'feed') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->feed[$this->current_name_space][$this->current_field])) {
                 $this->feed[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->feed[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->feed[$this->current_field])) {
                 $this->feed[$this->current_field] .= $text;
             } else {
                 $this->feed[$this->current_field] = $text;
             }
         }
         // we are describing one information entry
     } elseif ($this->elements_stack[0] == 'entry') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->current_entry[$this->current_name_space][$this->current_field])) {
                 $this->current_entry[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->current_entry[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->current_entry[$this->current_field])) {
                 $this->current_entry[$this->current_field] .= $text;
             } else {
                 $this->current_entry[$this->current_field] = $text;
             }
         }
         //			echo '.'.$this->current_entry[$this->current_field].BR;
         // we are describing a textinput
     } elseif ($this->elements_stack[0] == 'textinput') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->textinput[$this->current_name_space][$this->current_field])) {
                 $this->textinput[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->textinput[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->textinput[$this->current_field])) {
                 $this->textinput[$this->current_field] .= $text;
             } else {
                 $this->textinput[$this->current_field] = $text;
             }
         }
         // we are describing an image
     } elseif ($this->elements_stack[0] == 'image') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->image[$this->current_name_space][$this->current_field])) {
                 $this->image[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->image[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->image[$this->current_field])) {
                 $this->image[$this->current_field] .= $text;
             } else {
                 $this->image[$this->current_field] = $text;
             }
         }
     }
 }

 function parse_cdata($parser, $text)
 {
     // transcode non-UTF-8 data
     if ($this->encoding != 'UTF-8') {
         $text = utf8::from_iso8859($text);
     }
     // skip item, channel, items first time we see them
     if ($this->elements_stack[0] == $this->current_field or !$this->current_field) {
         return;
     }
     // we are describing a channel
     if ($this->elements_stack[0] == 'channel') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->channel[$this->current_name_space][$this->current_field])) {
                 $this->channel[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->channel[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->channel[$this->current_field])) {
                 $this->channel[$this->current_field] .= $text;
             } else {
                 $this->channel[$this->current_field] = $text;
             }
         }
         // we are describing one information item
     } elseif ($this->elements_stack[0] == 'item') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->current_item[$this->current_name_space][$this->current_field])) {
                 $this->current_item[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->current_item[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->current_item[$this->current_field])) {
                 $this->current_item[$this->current_field] .= $text;
             } else {
                 $this->current_item[$this->current_field] = $text;
             }
         }
         // we are describing a textinput
     } elseif ($this->elements_stack[0] == 'textinput') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->textinput[$this->current_name_space][$this->current_field])) {
                 $this->textinput[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->textinput[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->textinput[$this->current_field])) {
                 $this->textinput[$this->current_field] .= $text;
             } else {
                 $this->textinput[$this->current_field] = $text;
             }
         }
         // we are describing an image
     } elseif ($this->elements_stack[0] == 'image') {
         if (isset($this->current_name_space) && $this->current_name_space) {
             if (isset($this->image[$this->current_name_space][$this->current_field])) {
                 $this->image[$this->current_name_space][$this->current_field] .= $text;
             } else {
                 $this->image[$this->current_name_space][$this->current_field] = $text;
             }
         } else {
             if (isset($this->image[$this->current_field])) {
                 $this->image[$this->current_field] .= $text;
             } else {
                 $this->image[$this->current_field] = $text;
             }
         }
     }
 }