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8288589: Files.readString ignores encoding errors for UTF-16

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Reviewed-by: rriggs, iris, alanb
This commit is contained in:
Naoto Sato 2022-06-23 15:49:43 +00:00
parent ef17ee4dea
commit 2728770e3d
4 changed files with 163 additions and 88 deletions
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41
src/java.base/share/classes/java/lang/String.java
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@ -658,6 +658,8 @@ public final class String
// decode using CharsetDecoder
int en = scale(length, cd.maxCharsPerByte());
cd.onMalformedInput(CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE);
char[] ca = new char[en];
if (charset.getClass().getClassLoader0() != null &&
System.getSecurityManager() != null) {
@ -665,7 +667,13 @@ public final class String
offset = 0;
}
int caLen = decodeWithDecoder(cd, ca, bytes, offset, length);
int caLen;
try {
caLen = decodeWithDecoder(cd, ca, bytes, offset, length);
} catch (CharacterCodingException x) {
// Substitution is enabled, so this shouldn't happen
throw new Error(x);
}
if (COMPACT_STRINGS) {
byte[] bs = StringUTF16.compress(ca, 0, caLen);
if (bs != null) {
@ -791,7 +799,13 @@ public final class String
System.getSecurityManager() != null) {
src = Arrays.copyOf(src, len);
}
int caLen = decodeWithDecoder(cd, ca, src, 0, src.length);
int caLen;
try {
caLen = decodeWithDecoder(cd, ca, src, 0, src.length);
} catch (CharacterCodingException x) {
// throw via IAE
throw new IllegalArgumentException(x);
}
if (COMPACT_STRINGS) {
byte[] bs = StringUTF16.compress(ca, 0, caLen);
if (bs != null) {
@ -1199,23 +1213,16 @@ public final class String
return dp;
}
private static int decodeWithDecoder(CharsetDecoder cd, char[] dst, byte[] src, int offset, int length) {
private static int decodeWithDecoder(CharsetDecoder cd, char[] dst, byte[] src, int offset, int length)
throws CharacterCodingException {
ByteBuffer bb = ByteBuffer.wrap(src, offset, length);
CharBuffer cb = CharBuffer.wrap(dst, 0, dst.length);
cd.onMalformedInput(CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE);
try {
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
cr.throwException();
cr = cd.flush(cb);
if (!cr.isUnderflow())
cr.throwException();
} catch (CharacterCodingException x) {
// Substitution is always enabled,
// so this shouldn't happen
throw new Error(x);
}
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
cr.throwException();
cr = cd.flush(cb);
if (!cr.isUnderflow())
cr.throwException();
return cb.position();
}