Autopsy  4.19.3
Graphical digital forensics platform for The Sleuth Kit and other tools.
TextUtil.java
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1 /*
2  * Autopsy Forensic Browser
3  *
4  * Copyright 2012 Basis Technology Corp.
5  * Contact: carrier <at> sleuthkit <dot> org
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  */
19 package org.sleuthkit.autopsy.coreutils;
20 
21 import java.awt.ComponentOrientation;
22 
26 public class TextUtil {
27 
36  public static ComponentOrientation getTextDirection(String text) {
37  int rtl_cnt = 0;
38  for (char c : text.toCharArray()) {
39  if (Character.isWhitespace(c)) {
40  continue;
41  }
42 
43  // count the RTL chars
44  byte direction = Character.getDirectionality(c);
45  if (direction == Character.DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC
46  || direction == Character.DIRECTIONALITY_RIGHT_TO_LEFT) {
47  ++rtl_cnt;
48  }
49  }
50 
51  ComponentOrientation orientation = ComponentOrientation.LEFT_TO_RIGHT;
52  if (text.length() > 1024 && rtl_cnt > 50) {
53  orientation = ComponentOrientation.RIGHT_TO_LEFT;
54  } else if (text.length() <= 1024 && rtl_cnt > text.length() / 4) {
55  orientation = ComponentOrientation.RIGHT_TO_LEFT;
56  }
57 
58  return orientation;
59  }
60 
61 
83  public static boolean isValidSolrUTF8(char ch) {
84  return ((ch <= 0xFDD0 || ch >= 0xFDEF) // 0xfdd0 - 0xfdef
85  && (ch > 0x1F || ch == 0x9 || ch == 0xA || ch == 0xD)
86  && (ch % 0x10000 != 0xFFFF) // 0xffff - 0x10ffff range step 0x10000
87  && (ch % 0x10000 != 0xFFFE)); // 0xfffe - 0x10fffe range
88  }
89 }
static ComponentOrientation getTextDirection(String text)
Definition: TextUtil.java:36
static boolean isValidSolrUTF8(char ch)
Definition: TextUtil.java:83

Copyright © 2012-2022 Basis Technology. Generated on: Tue Oct 4 2022
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