| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ID3TextEncodingConversion |
|
| 6.333333333333333;6.333 |
| 1 | package org.jaudiotagger.tag.id3; | |
| 2 | ||
| 3 | import org.jaudiotagger.tag.TagOptionSingleton; | |
| 4 | import org.jaudiotagger.tag.id3.valuepair.TextEncoding; | |
| 5 | ||
| 6 | import java.util.logging.Logger; | |
| 7 | ||
| 8 | /** | |
| 9 | * Functions to encode text according to encodingoptions and ID3 version | |
| 10 | */ | |
| 11 | 0 | public class ID3TextEncodingConversion |
| 12 | { | |
| 13 | //Logger | |
| 14 | 27 | public static Logger logger = Logger.getLogger("org.jaudiotagger.tag.id3"); |
| 15 | ||
| 16 | ||
| 17 | /** | |
| 18 | * Check the text encoding is valid for this header type and is appropriate for | |
| 19 | * user text encoding options. * | |
| 20 | * <p/> | |
| 21 | * This is called before writing any frames that use text encoding | |
| 22 | * | |
| 23 | * @param header used to identify the ID3tagtype | |
| 24 | * @param textEncoding currently set | |
| 25 | * @return valid encoding according to version type and user options | |
| 26 | */ | |
| 27 | public static byte getTextEncoding(AbstractTagFrame header, byte textEncoding) | |
| 28 | { | |
| 29 | ||
| 30 | //Should not happen, assume v23 and provide a warning | |
| 31 | 1001 | if (header == null) |
| 32 | { | |
| 33 | 1 | logger.warning("Header has not yet been set for this framebody"); |
| 34 | ||
| 35 | 1 | if (TagOptionSingleton.getInstance().isResetTextEncodingForExistingFrames()) |
| 36 | { | |
| 37 | 0 | return TagOptionSingleton.getInstance().getId3v23DefaultTextEncoding(); |
| 38 | } | |
| 39 | else | |
| 40 | { | |
| 41 | 1 | return convertV24textEncodingToV23textEncoding(textEncoding); |
| 42 | } | |
| 43 | } | |
| 44 | 1000 | else if (header instanceof ID3v24Frame) |
| 45 | { | |
| 46 | 490 | if (TagOptionSingleton.getInstance().isResetTextEncodingForExistingFrames()) |
| 47 | { | |
| 48 | //Replace with default | |
| 49 | 32 | return TagOptionSingleton.getInstance().getId3v24DefaultTextEncoding(); |
| 50 | } | |
| 51 | else | |
| 52 | { | |
| 53 | //All text encodings supported nothing to do | |
| 54 | 458 | return textEncoding; |
| 55 | } | |
| 56 | } | |
| 57 | else | |
| 58 | { | |
| 59 | 510 | if (TagOptionSingleton.getInstance().isResetTextEncodingForExistingFrames()) |
| 60 | { | |
| 61 | //Replace with default | |
| 62 | 32 | return TagOptionSingleton.getInstance().getId3v23DefaultTextEncoding(); |
| 63 | } | |
| 64 | else | |
| 65 | { | |
| 66 | //If text encoding is an unsupported v24 one we use unicode v23 equivalent | |
| 67 | 478 | return convertV24textEncodingToV23textEncoding(textEncoding); |
| 68 | } | |
| 69 | } | |
| 70 | } | |
| 71 | ||
| 72 | /** | |
| 73 | * Sets the text encoding to best Unicode type for the version | |
| 74 | * | |
| 75 | * @param header | |
| 76 | * @return | |
| 77 | */ | |
| 78 | public static byte getUnicodeTextEncoding(AbstractTagFrame header) | |
| 79 | { | |
| 80 | 15 | if (header == null) |
| 81 | { | |
| 82 | 1 | logger.warning("Header has not yet been set for this framebody"); |
| 83 | 1 | return TextEncoding.UTF_16; |
| 84 | } | |
| 85 | 14 | else if (header instanceof ID3v24Frame) |
| 86 | { | |
| 87 | 7 | return TagOptionSingleton.getInstance().getId3v24UnicodeTextEncoding(); |
| 88 | } | |
| 89 | else | |
| 90 | { | |
| 91 | 7 | return TextEncoding.UTF_16; |
| 92 | } | |
| 93 | } | |
| 94 | ||
| 95 | /** | |
| 96 | * Convert v24 text encoding to a valid v23 encoding | |
| 97 | * | |
| 98 | * @param textEncoding | |
| 99 | * @return valid encoding | |
| 100 | */ | |
| 101 | private static byte convertV24textEncodingToV23textEncoding(byte textEncoding) | |
| 102 | { | |
| 103 | 479 | if ((textEncoding == TextEncoding.UTF_16BE) || (textEncoding == TextEncoding.UTF_8)) |
| 104 | { | |
| 105 | 37 | return TextEncoding.UTF_16; |
| 106 | } | |
| 107 | else | |
| 108 | { | |
| 109 | 442 | return textEncoding; |
| 110 | } | |
| 111 | } | |
| 112 | ||
| 113 | ||
| 114 | } |