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8275863: Use encodeASCII for ASCII-compatible DoubleByte encodings

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Reviewed-by: naoto, rriggs, alanb
This commit is contained in:
Claes Redestad 2021-10-27 10:07:46 +00:00
parent 2f979ecb5b
commit 6c05cc9d15
5 changed files with 31 additions and 11 deletions
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15
src/java.base/share/classes/sun/nio/cs/DoubleByte.java
View file

@ -111,11 +111,11 @@ public class DoubleByte {
Arrays.fill(B2C_UNMAPPABLE, UNMAPPABLE_DECODING);
}
private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();
public static class Decoder extends CharsetDecoder
implements DelegatableDecoder, ArrayDecoder
{
private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();
final char[][] b2c;
final char[] b2cSB;
final int b2Min;
@ -601,6 +601,11 @@ public class DoubleByte {
int dl = dst.arrayOffset() + dst.limit();
try {
if (isASCIICompatible) {
int n = JLA.encodeASCII(sa, sp, da, dp, Math.min(dl - dp, sl - sp));
sp += n;
dp += n;
}
while (sp < sl) {
char c = sa[sp];
int bb = encodeChar(c);
@ -681,7 +686,11 @@ public class DoubleByte {
public int encode(char[] src, int sp, int len, byte[] dst) {
int dp = 0;
int sl = sp + len;
int dl = dst.length;
if (isASCIICompatible) {
int n = JLA.encodeASCII(src, sp, dst, dp, len);
sp += n;
dp += n;
}
while (sp < sl) {
char c = src[sp++];
int bb = encodeChar(c);

14
src/java.base/share/classes/sun/nio/cs/HKSCS.java
View file

@ -42,9 +42,9 @@ public class HKSCS {
static int b2Min = 0x40;
static int b2Max = 0xfe;
private char[][] b2cBmp;
private char[][] b2cSupp;
private DoubleByte.Decoder big5Dec;
private final char[][] b2cBmp;
private final char[][] b2cSupp;
private final DoubleByte.Decoder big5Dec;
protected Decoder(Charset cs,
DoubleByte.Decoder big5Dec,
@ -94,7 +94,6 @@ public class HKSCS {
int b1 = sa[sp] & 0xff;
char c = decodeSingle(b1);
int inSize = 1, outSize = 1;
char[] cc = null;
if (c == UNMAPPABLE_DECODING) {
if (sl - sp < 2)
return CoderResult.UNDERFLOW;
@ -137,7 +136,6 @@ public class HKSCS {
int mark = src.position();
try {
while (src.hasRemaining()) {
char[] cc = null;
int b1 = src.get() & 0xff;
int inSize = 1, outSize = 1;
char c = decodeSingle(b1);
@ -230,9 +228,9 @@ public class HKSCS {
}
public static class Encoder extends DoubleByte.Encoder {
private DoubleByte.Encoder big5Enc;
private char[][] c2bBmp;
private char[][] c2bSupp;
private final DoubleByte.Encoder big5Enc;
private final char[][] c2bBmp;
private final char[][] c2bSupp;
protected Encoder(Charset cs,
DoubleByte.Encoder big5Enc,