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m---------src/Runtime/ogl-runtime0
-rw-r--r--src/Runtime/ogl-runtime/src/foundation/ConvertUTF.cpp661
2 files changed, 0 insertions, 661 deletions
diff --git a/src/Runtime/ogl-runtime b/src/Runtime/ogl-runtime
new file mode 160000
+Subproject 2025912174c4cf99270b7439ec3b021e1d089ae
diff --git a/src/Runtime/ogl-runtime/src/foundation/ConvertUTF.cpp b/src/Runtime/ogl-runtime/src/foundation/ConvertUTF.cpp
deleted file mode 100644
index a71a3aeb..00000000
--- a/src/Runtime/ogl-runtime/src/foundation/ConvertUTF.cpp
+++ /dev/null
@@ -1,661 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 1993-2009 NVIDIA Corporation.
-** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of Qt 3D Studio.
-**
-** $QT_BEGIN_LICENSE:GPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3 or (at your option) any later version
-** approved by the KDE Free Qt Foundation. The licenses are as published by
-** the Free Software Foundation and appearing in the file LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-/*
-* Copyright 2001-2004 Unicode, Inc.
-*
-* Disclaimer
-*
-* This source code is provided as is by Unicode, Inc. No claims are
-* made as to fitness for any particular purpose. No warranties of any
-* kind are expressed or implied. The recipient agrees to determine
-* applicability of information provided. If this file has been
-* purchased on magnetic or optical media from Unicode, Inc., the
-* sole remedy for any claim will be exchange of defective media
-* within 90 days of receipt.
-*
-* Limitations on Rights to Redistribute This Code
-*
-* Unicode, Inc. hereby grants the right to freely use the information
-* supplied in this file in the creation of products supporting the
-* Unicode Standard, and to make copies of this file in any form
-* for internal or external distribution as long as this notice
-* remains attached.
-*/
-
-/* ---------------------------------------------------------------------
- Conversions between UTF32, UTF-16, and UTF-8. Source code file.
- Author: Mark E. Davis, 1994.
- Rev History: Rick McGowan, fixes & updates May 2001.
- Sept 2001: fixed const & error conditions per
- mods suggested by S. Parent & A. Lillich.
- June 2002: Tim Dodd added detection and handling of incomplete
- source sequences, enhanced error detection, added casts
- to eliminate compiler warnings.
- July 2003: slight mods to back out aggressive FFFE detection.
- Jan 2004: updated switches in from-UTF8 conversions.
- Oct 2004: updated to use UNI_MAX_LEGAL_UTF32 in UTF-32 conversions.
- See the header file "ConvertUTF.h" for complete documentation.
------------------------------------------------------------------------- */
-
-#include "foundation/ConvertUTF.h"
-
-#ifdef _MSC_VER
-#pragma warning(disable : 4365) // warnings on conversion from unsigned int to int
-#endif
-
-#ifdef CVTUTF_DEBUG
-#include <stdio.h>
-#endif
-
-static const int halfShift = 10; /* used for shifting by 10 bits */
-
-static const UTF32 halfBase = 0x0010000UL;
-static const UTF32 halfMask = 0x3FFUL;
-
-#define UNI_SUR_HIGH_START (UTF32)0xD800
-#define UNI_SUR_HIGH_END (UTF32)0xDBFF
-#define UNI_SUR_LOW_START (UTF32)0xDC00
-#define UNI_SUR_LOW_END (UTF32)0xDFFF
-#define false 0
-#define true 1
-
-/* --------------------------------------------------------------------- */
-
-ConversionResult Q3DSConvertUTF32toUTF16(const UTF32 **sourceStart, const UTF32 *sourceEnd,
- UTF16 **targetStart, UTF16 *targetEnd,
- ConversionFlags flags)
-{
- ConversionResult result = conversionOK;
- const UTF32 *source = *sourceStart;
- UTF16 *target = *targetStart;
- while (source < sourceEnd) {
- UTF32 ch;
- if (target >= targetEnd) {
- result = targetExhausted;
- break;
- }
- ch = *source++;
- if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
- /* UTF-16 surrogate values are illegal in UTF-32; 0xffff or 0xfffe are both reserved
- * values */
- if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
- if (flags == strictConversion) {
- --source; /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- } else {
- *target++ = UNI_REPLACEMENT_CHAR;
- }
- } else {
- *target++ = (UTF16)ch; /* normal case */
- }
- } else if (ch > UNI_MAX_LEGAL_UTF32) {
- if (flags == strictConversion) {
- result = sourceIllegal;
- } else {
- *target++ = UNI_REPLACEMENT_CHAR;
- }
- } else {
- /* target is a character in range 0xFFFF - 0x10FFFF. */
- if (target + 1 >= targetEnd) {
- --source; /* Back up source pointer! */
- result = targetExhausted;
- break;
- }
- ch -= halfBase;
- *target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
- *target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
- }
- }
- *sourceStart = source;
- *targetStart = target;
- return result;
-}
-
-/* --------------------------------------------------------------------- */
-
-ConversionResult Q3DSConvertUTF16toUTF32(const UTF16 **sourceStart, const UTF16 *sourceEnd,
- UTF32 **targetStart, UTF32 *targetEnd,
- ConversionFlags flags)
-{
- ConversionResult result = conversionOK;
- const UTF16 *source = *sourceStart;
- UTF32 *target = *targetStart;
- UTF32 ch, ch2;
- while (source < sourceEnd) {
- const UTF16 *oldSource =
- source; /* In case we have to back up because of target overflow. */
- ch = *source++;
- /* If we have a surrogate pair, convert to UTF32 first. */
- if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
- /* If the 16 bits following the high surrogate are in the source buffer... */
- if (source < sourceEnd) {
- ch2 = *source;
- /* If it's a low surrogate, convert to UTF32. */
- if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
- ch = ((ch - UNI_SUR_HIGH_START) << halfShift) + (ch2 - UNI_SUR_LOW_START)
- + halfBase;
- ++source;
- } else if (flags == strictConversion) { /* it's an unpaired high surrogate */
- --source; /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- }
- } else { /* We don't have the 16 bits following the high surrogate. */
- --source; /* return to the high surrogate */
- result = sourceExhausted;
- break;
- }
- } else if (flags == strictConversion) {
- /* UTF-16 surrogate values are illegal in UTF-32 */
- if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
- --source; /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- }
- }
- if (target >= targetEnd) {
- source = oldSource; /* Back up source pointer! */
- result = targetExhausted;
- break;
- }
- *target++ = ch;
- }
- *sourceStart = source;
- *targetStart = target;
-#ifdef CVTUTF_DEBUG
- if (result == sourceIllegal) {
- fprintf(stderr, "ConvertUTF16toUTF32 illegal seq 0x%04x,%04x\n", ch, ch2);
- fflush(stderr);
- }
-#endif
- return result;
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Index into the table below with the first byte of a UTF-8 sequence to
- * get the number of trailing bytes that are supposed to follow it.
- * Note that *legal* UTF-8 values can't have 4 or 5-bytes. The table is
- * left as-is for anyone who may want to do such conversion, which was
- * allowed in earlier algorithms.
- */
-static const char trailingBytesForUTF8[256] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 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,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5
-};
-
-/*
- * Magic values subtracted from a buffer value during UTF8 conversion.
- * This table contains as many values as there might be trailing bytes
- * in a UTF-8 sequence.
- */
-static const UTF32 offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL,
- 0x03C82080UL, 0xFA082080UL, 0x82082080UL };
-
-/*
- * Once the bits are split out into bytes of UTF-8, this is a mask OR-ed
- * into the first byte, depending on how many bytes follow. There are
- * as many entries in this table as there are UTF-8 sequence types.
- * (I.e., one byte sequence, two byte... etc.). Remember that sequencs
- * for *legal* UTF-8 will be 4 or fewer bytes total.
- */
-static const UTF8 firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
-
-/* --------------------------------------------------------------------- */
-
-/* The interface converts a whole buffer to avoid function-call overhead.
- * Constants have been gathered. Loops & conditionals have been removed as
- * much as possible for efficiency, in favor of drop-through switches.
- * (See "Note A" at the bottom of the file for equivalent code.)
- * If your compiler supports it, the "isLegalUTF8" call can be turned
- * into an inline function.
- */
-
-/* --------------------------------------------------------------------- */
-
-ConversionResult Q3DSConvertUTF16toUTF8(const UTF16 **sourceStart, const UTF16 *sourceEnd,
- UTF8 **targetStart, UTF8 *targetEnd, ConversionFlags flags)
-{
- ConversionResult result = conversionOK;
- const UTF16 *source = *sourceStart;
- UTF8 *target = *targetStart;
- while (source < sourceEnd) {
- UTF32 ch;
- unsigned short bytesToWrite = 0;
- const UTF32 byteMask = 0xBF;
- const UTF32 byteMark = 0x80;
- const UTF16 *oldSource =
- source; /* In case we have to back up because of target overflow. */
- ch = *source++;
- /* If we have a surrogate pair, convert to UTF32 first. */
- if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
- /* If the 16 bits following the high surrogate are in the source buffer... */
- if (source < sourceEnd) {
- UTF32 ch2 = *source;
- /* If it's a low surrogate, convert to UTF32. */
- if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
- ch = ((ch - UNI_SUR_HIGH_START) << halfShift) + (ch2 - UNI_SUR_LOW_START)
- + halfBase;
- ++source;
- } else if (flags == strictConversion) { /* it's an unpaired high surrogate */
- --source; /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- }
- } else { /* We don't have the 16 bits following the high surrogate. */
- --source; /* return to the high surrogate */
- result = sourceExhausted;
- break;
- }
- } else if (flags == strictConversion) {
- /* UTF-16 surrogate values are illegal in UTF-32 */
- if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
- --source; /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- }
- }
- /* Figure out how many bytes the result will require */
- if (ch < (UTF32)0x80) {
- bytesToWrite = 1;
- } else if (ch < (UTF32)0x800) {
- bytesToWrite = 2;
- } else if (ch < (UTF32)0x10000) {
- bytesToWrite = 3;
- } else if (ch < (UTF32)0x110000) {
- bytesToWrite = 4;
- } else {
- bytesToWrite = 3;
- ch = UNI_REPLACEMENT_CHAR;
- }
-
- target += bytesToWrite;
- if (target > targetEnd) {
- source = oldSource; /* Back up source pointer! */
- target -= bytesToWrite;
- result = targetExhausted;
- break;
- }
- switch (bytesToWrite) { /* note: everything falls through. */
- case 4:
- *--target = (UTF8)((ch | byteMark) & byteMask);
- ch >>= 6;
- case 3:
- *--target = (UTF8)((ch | byteMark) & byteMask);
- ch >>= 6;
- case 2:
- *--target = (UTF8)((ch | byteMark) & byteMask);
- ch >>= 6;
- case 1:
- *--target = (UTF8)(ch | firstByteMark[bytesToWrite]);
- }
- target += bytesToWrite;
- }
- *sourceStart = source;
- *targetStart = target;
- return result;
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Utility routine to tell whether a sequence of bytes is legal UTF-8.
- * This must be called with the length pre-determined by the first byte.
- * If not calling this from ConvertUTF8to*, then the length can be set by:
- * length = trailingBytesForUTF8[*source]+1;
- * and the sequence is illegal right away if there aren't that many bytes
- * available.
- * If presented with a length > 4, this returns false. The Unicode
- * definition of UTF-8 goes up to 4-byte sequences.
- */
-
-static Boolean isLegalUTF8(const UTF8 *source, int length)
-{
- UTF8 a;
- const UTF8 *srcptr = source + length;
- switch (length) {
- default:
- return false;
- /* Everything else falls through when "true"... */
- case 4:
- if ((a = (*--srcptr)) < 0x80 || a > 0xBF)
- return false;
- case 3:
- if ((a = (*--srcptr)) < 0x80 || a > 0xBF)
- return false;
- case 2:
- if ((a = (*--srcptr)) > 0xBF)
- return false;
-
- switch (*source) {
- /* no fall-through in this inner switch */
- case 0xE0:
- if (a < 0xA0)
- return false;
- break;
- case 0xED:
- if (a > 0x9F)
- return false;
- break;
- case 0xF0:
- if (a < 0x90)
- return false;
- break;
- case 0xF4:
- if (a > 0x8F)
- return false;
- break;
- default:
- if (a < 0x80)
- return false;
- }
-
- case 1:
- if (*source >= 0x80 && *source < 0xC2)
- return false;
- }
- if (*source > 0xF4)
- return false;
- return true;
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Exported function to return whether a UTF-8 sequence is legal or not.
- * This is not used here; it's just exported.
- */
-Boolean Q3DSIsLegalUTF8Sequence(const UTF8 *source, const UTF8 *sourceEnd)
-{
- int length = trailingBytesForUTF8[*source] + 1;
- if (source + length > sourceEnd) {
- return false;
- }
- return isLegalUTF8(source, length);
-}
-
-/* --------------------------------------------------------------------- */
-
-ConversionResult Q3DSConvertUTF8toUTF16(const UTF8 **sourceStart, const UTF8 *sourceEnd,
- UTF16 **targetStart, UTF16 *targetEnd,
- ConversionFlags flags)
-{
- ConversionResult result = conversionOK;
- const UTF8 *source = *sourceStart;
- UTF16 *target = *targetStart;
- while (source < sourceEnd) {
- UTF32 ch = 0;
- unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
- if (source + extraBytesToRead >= sourceEnd) {
- result = sourceExhausted;
- break;
- }
- /* Do this check whether lenient or strict */
- if (!isLegalUTF8(source, extraBytesToRead + 1)) {
- result = sourceIllegal;
- break;
- }
- /*
- * The cases all fall through. See "Note A" below.
- */
- switch (extraBytesToRead) {
- case 5:
- ch += *source++;
- ch <<= 6; /* remember, illegal UTF-8 */
- case 4:
- ch += *source++;
- ch <<= 6; /* remember, illegal UTF-8 */
- case 3:
- ch += *source++;
- ch <<= 6;
- case 2:
- ch += *source++;
- ch <<= 6;
- case 1:
- ch += *source++;
- ch <<= 6;
- case 0:
- ch += *source++;
- }
- ch -= offsetsFromUTF8[extraBytesToRead];
-
- if (target >= targetEnd) {
- source -= (extraBytesToRead + 1); /* Back up source pointer! */
- result = targetExhausted;
- break;
- }
- if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
- /* UTF-16 surrogate values are illegal in UTF-32 */
- if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
- if (flags == strictConversion) {
- source -= (extraBytesToRead + 1); /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- } else {
- *target++ = UNI_REPLACEMENT_CHAR;
- }
- } else {
- *target++ = (UTF16)ch; /* normal case */
- }
- } else if (ch > UNI_MAX_UTF16) {
- if (flags == strictConversion) {
- result = sourceIllegal;
- source -= (extraBytesToRead + 1); /* return to the start */
- break; /* Bail out; shouldn't continue */
- } else {
- *target++ = UNI_REPLACEMENT_CHAR;
- }
- } else {
- /* target is a character in range 0xFFFF - 0x10FFFF. */
- if (target + 1 >= targetEnd) {
- source -= (extraBytesToRead + 1); /* Back up source pointer! */
- result = targetExhausted;
- break;
- }
- ch -= halfBase;
- *target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
- *target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
- }
- }
- *sourceStart = source;
- *targetStart = target;
- return result;
-}
-
-/* --------------------------------------------------------------------- */
-
-ConversionResult Q3DSConvertUTF32toUTF8(const UTF32 **sourceStart, const UTF32 *sourceEnd,
- UTF8 **targetStart, UTF8 *targetEnd, ConversionFlags flags)
-{
- ConversionResult result = conversionOK;
- const UTF32 *source = *sourceStart;
- UTF8 *target = *targetStart;
- while (source < sourceEnd) {
- UTF32 ch;
- unsigned short bytesToWrite = 0;
- const UTF32 byteMask = 0xBF;
- const UTF32 byteMark = 0x80;
- ch = *source++;
- if (flags == strictConversion) {
- /* UTF-16 surrogate values are illegal in UTF-32 */
- if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
- --source; /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- }
- }
- /*
- * Figure out how many bytes the result will require. Turn any
- * illegally large UTF32 things (> Plane 17) into replacement chars.
- */
- if (ch < (UTF32)0x80) {
- bytesToWrite = 1;
- } else if (ch < (UTF32)0x800) {
- bytesToWrite = 2;
- } else if (ch < (UTF32)0x10000) {
- bytesToWrite = 3;
- } else if (ch <= UNI_MAX_LEGAL_UTF32) {
- bytesToWrite = 4;
- } else {
- bytesToWrite = 3;
- ch = UNI_REPLACEMENT_CHAR;
- result = sourceIllegal;
- }
-
- target += bytesToWrite;
- if (target > targetEnd) {
- --source; /* Back up source pointer! */
- target -= bytesToWrite;
- result = targetExhausted;
- break;
- }
- switch (bytesToWrite) { /* note: everything falls through. */
- case 4:
- *--target = (UTF8)((ch | byteMark) & byteMask);
- ch >>= 6;
- case 3:
- *--target = (UTF8)((ch | byteMark) & byteMask);
- ch >>= 6;
- case 2:
- *--target = (UTF8)((ch | byteMark) & byteMask);
- ch >>= 6;
- case 1:
- *--target = (UTF8)(ch | firstByteMark[bytesToWrite]);
- }
- target += bytesToWrite;
- }
- *sourceStart = source;
- *targetStart = target;
- return result;
-}
-
-/* --------------------------------------------------------------------- */
-
-ConversionResult Q3DSConvertUTF8toUTF32(const UTF8 **sourceStart, const UTF8 *sourceEnd,
- UTF32 **targetStart, UTF32 *targetEnd,
- ConversionFlags flags)
-{
- ConversionResult result = conversionOK;
- const UTF8 *source = *sourceStart;
- UTF32 *target = *targetStart;
- while (source < sourceEnd) {
- UTF32 ch = 0;
- unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
- if (source + extraBytesToRead >= sourceEnd) {
- result = sourceExhausted;
- break;
- }
- /* Do this check whether lenient or strict */
- if (!isLegalUTF8(source, extraBytesToRead + 1)) {
- result = sourceIllegal;
- break;
- }
- /*
- * The cases all fall through. See "Note A" below.
- */
- switch (extraBytesToRead) {
- case 5:
- ch += *source++;
- ch <<= 6;
- case 4:
- ch += *source++;
- ch <<= 6;
- case 3:
- ch += *source++;
- ch <<= 6;
- case 2:
- ch += *source++;
- ch <<= 6;
- case 1:
- ch += *source++;
- ch <<= 6;
- case 0:
- ch += *source++;
- }
- ch -= offsetsFromUTF8[extraBytesToRead];
-
- if (target >= targetEnd) {
- source -= (extraBytesToRead + 1); /* Back up the source pointer! */
- result = targetExhausted;
- break;
- }
- if (ch <= UNI_MAX_LEGAL_UTF32) {
- /*
- * UTF-16 surrogate values are illegal in UTF-32, and anything
- * over Plane 17 (> 0x10FFFF) is illegal.
- */
- if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
- if (flags == strictConversion) {
- source -= (extraBytesToRead + 1); /* return to the illegal value itself */
- result = sourceIllegal;
- break;
- } else {
- *target++ = UNI_REPLACEMENT_CHAR;
- }
- } else {
- *target++ = ch;
- }
- } else { /* i.e., ch > UNI_MAX_LEGAL_UTF32 */
- result = sourceIllegal;
- *target++ = UNI_REPLACEMENT_CHAR;
- }
- }
- *sourceStart = source;
- *targetStart = target;
- return result;
-}
-
-/* ---------------------------------------------------------------------
-
- Note A.
- The fall-through switches in UTF-8 reading code save a
- temp variable, some decrements & conditionals. The switches
- are equivalent to the following loop:
- {
- int tmpBytesToRead = extraBytesToRead+1;
- do {
- ch += *source++;
- --tmpBytesToRead;
- if (tmpBytesToRead) ch <<= 6;
- } while (tmpBytesToRead > 0);
- }
- In UTF-8 writing code, the switches on "bytesToWrite" are
- similarly unrolled loops.
-
- --------------------------------------------------------------------- */
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