PHP record_warnings函数代码示例

 /**
  * applies all current styles to a particular document tree
  *
  * apply_styles() applies all currently loaded styles to the provided
  * {@link Frame_Tree}.  Aside from parsing CSS, this is the main purpose
  * of this class.
  *
  * @param Frame_Tree $tree
  */
 function apply_styles(Frame_Tree $tree)
 {
     // Use XPath to select nodes.  This would be easier if we could attach
     // Frame objects directly to DOMNodes using the setUserData() method, but
     // we can't do that just yet.  Instead, we set a _node attribute_ in
     // Frame->set_id() and use that as a handle on the Frame object via
     // Frame_Tree::$_registry.
     // We create a scratch array of styles indexed by frame id.  Once all
     // styles have been assigned, we order the cached styles by specificity
     // and create a final style object to assign to the frame.
     // FIXME: this is not particularly robust...
     $styles = array();
     $xp = new DOMXPath($tree->get_dom());
     // Add generated content
     foreach ($this->_styles as $selector => $style) {
         if (strpos($selector, ":before") === false && strpos($selector, ":after") === false) {
             continue;
         }
         $query = $this->_css_selector_to_xpath($selector, true);
         // Retrieve the nodes
         $nodes = @$xp->query($query["query"]);
         if ($nodes == null) {
             record_warnings(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
             continue;
         }
         foreach ($nodes as $i => $node) {
             foreach ($query["pseudo_elements"] as $pos) {
                 if (($src = $this->_image($style->content)) !== "none") {
                     $new_node = $node->ownerDocument->createElement("img_generated");
                     $new_node->setAttribute("src", $src);
                 } else {
                     $new_node = $node->ownerDocument->createElement("dompdf_generated");
                 }
                 $new_node->setAttribute($pos, $pos);
                 $tree->insert_node($node, $new_node, $pos);
             }
         }
     }
     // Apply all styles in stylesheet
     foreach ($this->_styles as $selector => $style) {
         $query = $this->_css_selector_to_xpath($selector);
         // Retrieve the nodes
         $nodes = @$xp->query($query["query"]);
         if ($nodes == null) {
             record_warnings(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
             continue;
         }
         foreach ($nodes as $node) {
             // Retrieve the node id
             if ($node->nodeType != XML_ELEMENT_NODE) {
                 // Only DOMElements get styles
                 continue;
             }
             $id = $node->getAttribute("frame_id");
             // Assign the current style to the scratch array
             $spec = $this->_specificity($selector);
             $styles[$id][$spec][] = $style;
         }
     }
     // Now create the styles and assign them to the appropriate frames.  (We
     // iterate over the tree using an implicit Frame_Tree iterator.)
     $root_flg = false;
     foreach ($tree->get_frames() as $frame) {
         // pre_r($frame->get_node()->nodeName . ":");
         if (!$root_flg && $this->_page_style) {
             $style = $this->_page_style;
             $root_flg = true;
         } else {
             $style = $this->create_style();
         }
         // Find nearest DOMElement parent
         $p = $frame;
         while ($p = $p->get_parent()) {
             if ($p->get_node()->nodeType == XML_ELEMENT_NODE) {
                 break;
             }
         }
         // Styles can only be applied directly to DOMElements; anonymous
         // frames inherit from their parent
         if ($frame->get_node()->nodeType != XML_ELEMENT_NODE) {
             if ($p) {
                 $style->inherit($p->get_style());
             }
             $frame->set_style($style);
             continue;
         }
         $id = $frame->get_id();
         // Handle HTML 4.0 attributes
         Attribute_Translator::translate_attributes($frame);
         if (($str = $frame->get_node()->getAttribute(Attribute_Translator::$_style_attr)) !== "") {
             // Lowest specificity
//.........这里部分代码省略.........

 function apply_styles(Frame_Tree $tree)
 {
     $styles = array();
     $xp = new DOMXPath($tree->get_dom());
     foreach ($this->_styles as $selector => $style) {
         if (strpos($selector, ":before") === false && strpos($selector, ":after") === false) {
             continue;
         }
         $query = $this->_css_selector_to_xpath($selector, true);
         $nodes = @$xp->query($query["query"]);
         if ($nodes == null) {
             record_warnings(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
             continue;
         }
         foreach ($nodes as $i => $node) {
             foreach ($query["pseudo_elements"] as $pos) {
                 if ($node->hasAttribute("dompdf_{$pos}_frame_id")) {
                     continue;
                 }
                 if (($src = $this->_image($style->content)) !== "none") {
                     $new_node = $node->ownerDocument->createElement("img_generated");
                     $new_node->setAttribute("src", $src);
                 } else {
                     $new_node = $node->ownerDocument->createElement("dompdf_generated");
                 }
                 $new_node->setAttribute($pos, $pos);
                 $new_frame_id = $tree->insert_node($node, $new_node, $pos);
                 $node->setAttribute("dompdf_{$pos}_frame_id", $new_frame_id);
             }
         }
     }
     foreach ($this->_styles as $selector => $style) {
         $query = $this->_css_selector_to_xpath($selector);
         $nodes = @$xp->query($query["query"]);
         if ($nodes == null) {
             record_warnings(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
             continue;
         }
         foreach ($nodes as $node) {
             if ($node->nodeType != XML_ELEMENT_NODE) {
                 continue;
             }
             $id = $node->getAttribute("frame_id");
             $spec = $this->_specificity($selector);
             $styles[$id][$spec][] = $style;
         }
     }
     $root_flg = false;
     foreach ($tree->get_frames() as $frame) {
         if (!$root_flg && $this->_page_styles["base"]) {
             $style = $this->_page_styles["base"];
             $root_flg = true;
         } else {
             $style = $this->create_style();
         }
         $p = $frame;
         while ($p = $p->get_parent()) {
             if ($p->get_node()->nodeType == XML_ELEMENT_NODE) {
                 break;
             }
         }
         if ($frame->get_node()->nodeType != XML_ELEMENT_NODE) {
             if ($p) {
                 $style->inherit($p->get_style());
             }
             $frame->set_style($style);
             continue;
         }
         $id = $frame->get_id();
         Attribute_Translator::translate_attributes($frame);
         if (($str = $frame->get_node()->getAttribute(Attribute_Translator::$_style_attr)) !== "") {
             $styles[$id][1][] = $this->_parse_properties($str);
         }
         if (($str = $frame->get_node()->getAttribute("style")) !== "") {
             $str = preg_replace("'/\\*.*?\\*/'si", "", $str);
             $spec = $this->_specificity("!attr");
             $styles[$id][$spec][] = $this->_parse_properties($str);
         }
         if (isset($styles[$id])) {
             $applied_styles = $styles[$frame->get_id()];
             ksort($applied_styles);
             if (DEBUGCSS) {
                 $debug_nodename = $frame->get_node()->nodeName;
                 print "<pre>\n[{$debug_nodename}\n";
                 foreach ($applied_styles as $spec => $arr) {
                     printf("specificity: 0x%08x\n", $spec);
                     foreach ($arr as $s) {
                         print "[\n";
                         $s->debug_print();
                         print "]\n";
                     }
                 }
             }
             foreach ($applied_styles as $arr) {
                 foreach ($arr as $s) {
                     $style->merge($s);
                 }
             }
         }
         if ($p) {
//.........这里部分代码省略.........

 /**
  * load and parse a CSS file
  *
  * @param string $file
  */
 function load_css_file($file)
 {
     global $_dompdf_warnings;
     // Prevent circular references
     if (isset($this->_loaded_files[$file])) {
         return;
     }
     $this->_loaded_files[$file] = true;
     $parsed_url = explode_url($file);
     list($this->_protocol, $this->_base_host, $this->_base_path, $filename) = $parsed_url;
     if (!DOMPDF_ENABLE_REMOTE && ($this->_protocol != "" && $this->_protocol != "file://")) {
         record_warnings(E_USER_WARNING, "Remote CSS file '{$file}' requested, but DOMPDF_ENABLE_REMOTE is false.", __FILE__, __LINE__);
         return;
     }
     // Fix submitted by Nick Oostveen for aliased directory support:
     if ($this->_protocol == "") {
         $file = $this->_base_path . $filename;
     } else {
         $file = build_url($this->_protocol, $this->_base_host, $this->_base_path, $filename);
     }
     set_error_handler("record_warnings");
     $css = file_get_contents($file);
     restore_error_handler();
     if ($css == "") {
         record_warnings(E_USER_WARNING, "Unable to load css file {$file}", __FILE__, __LINE__);
         return;
     }
     $this->_parse_css($css);
 }

 /**
  * load and parse a CSS file
  *
  * @param string $file
  */
 function load_css_file($file)
 {
     global $_dompdf_warnings;
     // Prevent circular references
     if (array_key_exists($file, $this->_loaded_files)) {
         return;
     }
     $this->_loaded_files[$file] = true;
     list($this->_protocol, $this->_base_host, $this->_base_path, $filename) = explode_url($file);
     if (!DOMPDF_ENABLE_REMOTE && ($this->_protocol != "" && $this->_protocol != "file://")) {
         record_warnings(E_USER_ERROR, "Remote CSS file '{$file}' requested, but DOMPDF_ENABLE_REMOTE is false.", __FILE__, __LINE__);
         return;
     }
     if ($this->_protocol == "") {
         $file = $this->_base_path . $filename;
     }
     set_error_handler("record_warnings");
     $css = file_get_contents($file);
     restore_error_handler();
     if ($css == "") {
         record_warnings(E_USER_ERROR, "Unable to load css file {$file}", __FILE__, __LINE__);
         return;
     }
     $this->_parse_css($css);
 }