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Correctly parse ID3v2.4.0 multiple strings with single BOM (#1055)

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Some ID3v2.4.0 frames such as text information frames support multiple strings
separated by the termination code of the character encoding. If the encoding
is $01 UTF-16 with BOM, all strings shall have the same byte order. In the
multi strings written by TagLib, all string elements of such a multi string
have a BOM. However, I have often seen tags where a BOM exists only at the
beginning, i.e. at the start of the first string. In such a case, TagLib will
only return a list with the first string and a second empty string. This
commit will detect such cases and parse the strings without BOM according to
the BOM of the first string.
This commit is contained in:
Urs Fleisch
2022-07-25 20:37:15 +02:00
parent 50b89ad19a
commit 4e7f844ea6
2 changed files with 57 additions and 5 deletions
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36
tests/test_id3v2.cpp
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@ -199,7 +199,14 @@ public:
sl.append("Foo");
sl.append("Bar");
f.setText(sl);
CPPUNIT_ASSERT_EQUAL((unsigned int)(4+4+2+1+6+2+6), f.render().size());
ByteVector data = f.render();
CPPUNIT_ASSERT_EQUAL((unsigned int)(4+4+2+1+6+2+6), data.size());
ByteVector noBomBeData("TPE1\x00\x00\x00\x0f\x00\x00\x02"
"\0F\0o\0o\0\0"
"\0B\0a\0r", 25);
CPPUNIT_ASSERT_EQUAL(noBomBeData, data);
f.setData(data);
CPPUNIT_ASSERT_EQUAL(String("Foo Bar"), f.toString());
}
void testUTF16Delimiter()
@ -209,7 +216,32 @@ public:
sl.append("Foo");
sl.append("Bar");
f.setText(sl);
CPPUNIT_ASSERT_EQUAL((unsigned int)(4+4+2+1+8+2+8), f.render().size());
ByteVector data = f.render();
CPPUNIT_ASSERT_EQUAL((unsigned int)(4+4+2+1+8+2+8), data.size());
ByteVector multiBomLeData("TPE1\x00\x00\x00\x13\x00\x00\x01\xff\xfe"
"F\0o\0o\0\0\0" "\xff\xfe"
"B\0a\0r\0", 29);
CPPUNIT_ASSERT_EQUAL(multiBomLeData, data);
f.setData(data);
CPPUNIT_ASSERT_EQUAL(String("Foo Bar"), f.toString());
ByteVector multiBomBeData("TPE1\x00\x00\x00\x13\x00\x00\x01\xfe\xff"
"\0F\0o\0o\0\0" "\xfe\xff"
"\0B\0a\0r", 29);
f.setData(multiBomBeData);
CPPUNIT_ASSERT_EQUAL(String("Foo Bar"), f.toString());
ByteVector singleBomLeData("TPE1\x00\x00\x00\x13\x00\x00\x01\xff\xfe"
"F\0o\0o\0\0\0"
"B\0a\0r\0", 27);
f.setData(singleBomLeData);
CPPUNIT_ASSERT_EQUAL(String("Foo Bar"), f.toString());
ByteVector singleBomBeData("TPE1\x00\x00\x00\x13\x00\x00\x01\xfe\xff"
"\0F\0o\0o\0\0"
"\0B\0a\0r", 27);
f.setData(singleBomBeData);
CPPUNIT_ASSERT_EQUAL(String("Foo Bar"), f.toString());
}
void testBrokenFrame1()