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The Qbicc builder for the java.base JDK module
/*
* Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
*******************************************************************************
* Copyright (C) 2003-2004, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*/
//
// CHANGELOG
// 2005-05-19 Edward Wang
// - copy this file from icu4jsrc_3_2/src/com/ibm/icu/text/Punycode.java
// - move from package com.ibm.icu.text to package sun.net.idn
// - use ParseException instead of StringPrepParseException
// 2007-08-14 Martin Buchholz
// - remove redundant casts
//
package jdk.internal.icu.impl;
import java.text.ParseException;
import jdk.internal.icu.lang.UCharacter;
import jdk.internal.icu.text.UTF16;
/**
* Ported code from ICU punycode.c
* @author ram
*/
/* Package Private class */
public final class Punycode {
/* Punycode parameters for Bootstring */
private static final int BASE = 36;
private static final int TMIN = 1;
private static final int TMAX = 26;
private static final int SKEW = 38;
private static final int DAMP = 700;
private static final int INITIAL_BIAS = 72;
private static final int INITIAL_N = 0x80;
/* "Basic" Unicode/ASCII code points */
private static final int HYPHEN = 0x2d;
private static final int DELIMITER = HYPHEN;
private static final int ZERO = 0x30;
private static final int NINE = 0x39;
private static final int SMALL_A = 0x61;
private static final int SMALL_Z = 0x7a;
private static final int CAPITAL_A = 0x41;
private static final int CAPITAL_Z = 0x5a;
// TODO: eliminate the 256 limitation
private static final int MAX_CP_COUNT = 256;
private static final int UINT_MAGIC = 0x80000000;
private static final long ULONG_MAGIC = 0x8000000000000000L;
private static int adaptBias(int delta, int length, boolean firstTime){
if(firstTime){
delta /=DAMP;
}else{
delta /= 2;
}
delta += delta/length;
int count=0;
for(; delta>((BASE-TMIN)*TMAX)/2; count+=BASE) {
delta/=(BASE-TMIN);
}
return count+(((BASE-TMIN+1)*delta)/(delta+SKEW));
}
/**
* basicToDigit[] contains the numeric value of a basic code
* point (for use in representing integers) in the range 0 to
* BASE-1, or -1 if b is does not represent a value.
*/
static final int[] basicToDigit= new int[]{
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
private static char asciiCaseMap(char b, boolean uppercase) {
if(uppercase) {
if(SMALL_A<=b && b<=SMALL_Z) {
b-=(SMALL_A-CAPITAL_A);
}
} else {
if(CAPITAL_A<=b && b<=CAPITAL_Z) {
b+=(SMALL_A-CAPITAL_A);
}
}
return b;
}
/**
* digitToBasic() returns the basic code point whose value
* (when used for representing integers) is d, which must be in the
* range 0 to BASE-1. The lowercase form is used unless the uppercase flag is
* nonzero, in which case the uppercase form is used.
*/
private static char digitToBasic(int digit, boolean uppercase) {
/* 0..25 map to ASCII a..z or A..Z */
/* 26..35 map to ASCII 0..9 */
if(digit<26) {
if(uppercase) {
return (char)(CAPITAL_A+digit);
} else {
return (char)(SMALL_A+digit);
}
} else {
return (char)((ZERO-26)+digit);
}
}
/**
* Converts Unicode to Punycode.
* The input string must not contain single, unpaired surrogates.
* The output will be represented as an array of ASCII code points.
*
* @param src
* @param caseFlags
* @return
* @throws ParseException
*/
public static StringBuffer encode(StringBuffer src, boolean[] caseFlags) throws ParseException{
int[] cpBuffer = new int[MAX_CP_COUNT];
int n, delta, handledCPCount, basicLength, destLength, bias, j, m, q, k, t, srcCPCount;
char c, c2;
int srcLength = src.length();
int destCapacity = MAX_CP_COUNT;
char[] dest = new char[destCapacity];
StringBuffer result = new StringBuffer();
/*
* Handle the basic code points and
* convert extended ones to UTF-32 in cpBuffer (caseFlag in sign bit):
*/
srcCPCount=destLength=0;
for(j=0; j0) {
if(destLength state to , but guard against overflow:
*/
if(m-n>(0x7fffffff-MAX_CP_COUNT-delta)/(handledCPCount+1)) {
throw new RuntimeException("Internal program error");
}
delta+=(m-n)*(handledCPCount+1);
n=m;
/* Encode a sequence of same code points n */
for(j=0; jTMAX) {
t=TMAX;
}
*/
t=k-bias;
if(t=(bias+TMAX)) {
t=TMAX;
}
if(q0;) {
if(src.charAt(--j)==DELIMITER) {
break;
}
}
destLength=basicLength=destCPCount=j;
while(j>0) {
b=src.charAt(--j);
if(!isBasic(b)) {
throw new ParseException("Illegal char found", -1);
}
if(j0 ? basicLength+1 : 0; in=srcLength) {
throw new ParseException("Illegal char found", -1);
}
digit=basicToDigit[(byte)src.charAt(in++)];
if(digit<0) {
throw new ParseException("Invalid char found", -1);
}
if(digit>(0x7fffffff-i)/w) {
/* integer overflow */
throw new ParseException("Illegal char found", -1);
}
i+=digit*w;
t=k-bias;
if(t=(bias+TMAX)) {
t=TMAX;
}
if(digit0x7fffffff/(BASE-t)) {
/* integer overflow */
throw new ParseException("Illegal char found", -1);
}
w*=BASE-t;
}
/*
* Modification from sample code:
* Increments destCPCount here,
* where needed instead of in for() loop tail.
*/
++destCPCount;
bias=adaptBias(i-oldi, destCPCount, (oldi==0));
/*
* i was supposed to wrap around from (incremented) destCPCount to 0,
* incrementing n each time, so we'll fix that now:
*/
if(i/destCPCount>(0x7fffffff-n)) {
/* integer overflow */
throw new ParseException("Illegal char found", -1);
}
n+=i/destCPCount;
i%=destCPCount;
/* not needed for Punycode: */
/* if (decode_digit(n) <= BASE) return punycode_invalid_input; */
if(n>0x10ffff || isSurrogate(n)) {
/* Unicode code point overflow */
throw new ParseException("Illegal char found", -1);
}
/* Insert n at position i of the output: */
cpLength=UTF16.getCharCount(n);
if((destLength+cpLength)1) {
firstSupplementaryIndex=codeUnitIndex;
} else {
++firstSupplementaryIndex;
}
} else {
codeUnitIndex=firstSupplementaryIndex;
codeUnitIndex=UTF16.moveCodePointOffset(dest, 0, destLength, codeUnitIndex, i-codeUnitIndex);
}
/* use the UChar index codeUnitIndex instead of the code point index i */
if(codeUnitIndex © 2015 - 2025 Weber Informatics LLC | Privacy Policy