PDFBOX-5660: optimize/remove regex

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1932538 13f79535-47bb-0310-9956-ffa450edef68

Author: Maruan Sahyoun

pdfbox/src/main/java/org/apache/pdfbox/pdfparser/PDFStreamParser.java

@@ -47,7 +47,7 @@ public class PDFStreamParser extends COSParser
      */
     private static final Logger LOG = LogManager.getLogger(PDFStreamParser.class);
 
-    private static final Pattern NUMBER_PATTERN = Pattern.compile("^\\d*\\.?\\d*$");
+    private static final Pattern NUMBER_PATTERN = Pattern.compile("^(?>\\d*)\\.?(?>\\d*)$");
     private static final int MAX_BIN_CHAR_TEST_LENGTH = 10;
     private final byte[] binCharTestArr = new byte[MAX_BIN_CHAR_TEST_LENGTH];
     private int inlineImageDepth = 0;

pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDFreeTextAppearanceHandler.java

@@ -53,7 +53,7 @@ public class PDFreeTextAppearanceHandler extends PDAbstractAppearanceHandler
     private static final Logger LOG = LogManager.getLogger(PDFreeTextAppearanceHandler.class);
 
     private static final Pattern COLOR_PATTERN =
-            Pattern.compile(".*color\\:\\s*\\#([0-9a-fA-F]{6}).*");
+            Pattern.compile("color:\\s*+#([0-9a-fA-F]{6})");
 
     private float fontSize = 10;
     private COSName fontName = COSName.HELV;

tools/src/main/java/org/apache/pdfbox/tools/TextToPDF.java

@@ -282,7 +282,7 @@ public void createPDFFromText( PDDocument doc, Reader text ) throws IOException
             // the text.
             textIsEmpty = false;
 
-            String[] lineWords = nextLine.replaceAll("[\\n\\r]+$", "").split(" ", -1);
+            String[] lineWords = nextLine.split(" ", -1);
             int lineIndex = 0;
             while (lineIndex < lineWords.length)
             {