Remove parser optimization from SkosmosTurtleParser as this is now in…

…cluded in EasyRdf
NatLibFi · Mar 3, 2021 · 1720e43 · 1720e43
1 parent 1d5e0e3
commit 1720e43
Showing 1 changed file with 0 additions and 124 deletions.
diff --git a/model/SkosmosTurtleParser.php b/model/SkosmosTurtleParser.php
@@ -2,9 +2,6 @@
 
 class SkosmosTurtleParser extends EasyRdf\Parser\Turtle
 {
-    protected $bytePos = 0;
-    protected $dataLength = null;
-
     /**
      * Returns the namespace prefixes as an array of prefix => URI
      * @return array $namespaces
@@ -14,125 +11,4 @@ public function getNamespaces()
         return $this->namespaces;
     }
 
-    /**
-     * A lot faster since we're now only reading the next 4 bytes
-     * instead of the whole string.
-     * Gets the next character to be returned by read().
-     */
-    protected function peek()
-    {
-        if(!$this->dataLength) { $this->dataLength = strlen($this->data); }
-        if ($this->dataLength > $this->bytePos) {
-            $slice = substr($this->data, $this->bytePos, 4);
-            return mb_substr($slice, 0, 1, "UTF-8");
-        } else {
-            return -1;
-        }
-    }
-
-    /**
-     * Does not manipulate the data variable. Keeps track of the
-     * byte position instead.
-     * Read a single character from the input buffer.
-     * Returns -1 when the end of the file is reached.
-     */
-    protected function read()
-    {
-        $char = $this->peek();
-        if ($char == -1) {
-            return -1;
-        }
-        $this->bytePos += strlen($char);
-        // Keep tracks of which line we are on (0A = Line Feed)
-        if ($char == "\x0A") {
-            $this->line += 1;
-            $this->column = 1;
-        } else {
-            $this->column += 1;
-        }
-        return $char;
-    }
-
-    /**
-     * Steps back, restoring the previous character or statement read() to the input buffer.
-     */
-    protected function unread($chars)
-    {
-        $this->column -= mb_strlen($chars, "UTF-8");
-        $this->bytePos -= strlen($chars);
-        if ($this->bytePos < 0) {
-            $this->bytePos = 0;
-        }
-        if ($this->column < 1) {
-            $this->column = 1;
-        }
-    }
-
-
-    /**
-     * Reverse skips through whitespace in 4 byte increments.
-     * (Keeps the byte pointer accurate when unreading.)
-     * @ignore
-     */
-    protected function unskipWS()
-    {
-        if ($this->bytePos - 4 > 0) {
-            $slice = substr($this->data, $this->bytePos - 4, 4);
-            while($slice != '') {
-                if (!self::isWhitespace(mb_substr($slice, -1, 1, "UTF-8"))) {
-                    return;
-                }
-                $slice = substr($slice, 0, -1);
-                $this->bytePos -= 1;
-            }
-            // This 4 byte slice was full of whitespace.
-            // We need to check that there isn't more in the next slice.
-            $this->unSkipWS();
-        }
-    }
-
-    /**
-     * Parse triples with unskipWS (doesn't loose the pointer position in blank nodes).
-     * @ignore
-     */
-    protected function parseTriples()
-    {
-        $c = $this->peek();
-
-        // If the first character is an open bracket we need to decide which of
-        // the two parsing methods for blank nodes to use
-        if ($c == '[') {
-            $c = $this->read();
-            $this->skipWSC();
-            $c = $this->peek();
-            if ($c == ']') {
-                $c = $this->read();
-                $this->subject = $this->createBNode();
-                $this->skipWSC();
-                $this->parsePredicateObjectList();
-            } else {
-                $this->unskipWS();
-                $this->unread('[');
-                $this->subject = $this->parseImplicitBlank();
-            }
-            $this->skipWSC();
-            $c = $this->peek();
-
-            // if this is not the end of the statement, recurse into the list of
-            // predicate and objects, using the subject parsed above as the subject
-            // of the statement.
-            if ($c != '.') {
-                $this->parsePredicateObjectList();
-            }
-        } else {
-            $this->parseSubject();
-            $this->skipWSC();
-            $this->parsePredicateObjectList();
-        }
-
-        $this->subject = null;
-        $this->predicate = null;
-        $this->object = null;
-    }
-
 }