Leaked source code of windows server 2003
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// MLLBCons.cpp : Implementation of CMLLBCons
#include "private.h"
#include "mllbcons.h"
#ifdef ASTRIMPL
#include "mlswalk.h"
#endif
#include "mlstrbuf.h"
/////////////////////////////////////////////////////////////////////////////
// Line Break Character Table
const WCHAR awchNonBreakingAtLineEnd[] = {
0x0028, // LEFT PARENTHESIS
0x005B, // LEFT SQUARE BRACKET
0x007B, // LEFT CURLY BRACKET
0x00AB, // LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
0x2018, // LEFT SINGLE QUOTATION MARK
0x201C, // LEFT DOUBLE QUOTATION MARK
0x2039, // SINGLE LEFT-POINTING ANGLE QUOTATION MARK
0x2045, // LEFT SQUARE BRACKET WITH QUILL
0x207D, // SUPERSCRIPT LEFT PARENTHESIS
0x208D, // SUBSCRIPT LEFT PARENTHESIS
0x226A, // MUCH LESS THAN
0x3008, // LEFT ANGLE BRACKET
0x300A, // LEFT DOUBLE ANGLE BRACKET
0x300C, // LEFT CORNER BRACKET
0x300E, // LEFT WHITE CORNER BRACKET
0x3010, // LEFT BLACK LENTICULAR BRACKET
0x3014, // LEFT TORTOISE SHELL BRACKET
0x3016, // LEFT WHITE LENTICULAR BRACKET
0x3018, // LEFT WHITE TORTOISE SHELL BRACKET
0x301A, // LEFT WHITE SQUARE BRACKET
0x301D, // REVERSED DOUBLE PRIME QUOTATION MARK
0xFD3E, // ORNATE LEFT PARENTHESIS
0xFE35, // PRESENTATION FORM FOR VERTICAL LEFT PARENTHESIS
0xFE37, // PRESENTATION FORM FOR VERTICAL LEFT CURLY BRACKET
0xFE39, // PRESENTATION FORM FOR VERTICAL LEFT TORTOISE SHELL BRACKET
0xFE3B, // PRESENTATION FORM FOR VERTICAL LEFT BLACK LENTICULAR BRACKET
0xFE3D, // PRESENTATION FORM FOR VERTICAL LEFT DOUBLE ANGLE BRACKET
0xFE3F, // PRESENTATION FORM FOR VERTICAL LEFT ANGLE BRACKET
0xFE41, // PRESENTATION FORM FOR VERTICAL LEFT CORNER BRACKET
0xFE43, // PRESENTATION FORM FOR VERTICAL LEFT WHITE CORNER BRACKET
0xFE59, // SMALL LEFT PARENTHESIS
0xFE5B, // SMALL LEFT CURLY BRACKET
0xFE5D, // SMALL LEFT TORTOISE SHELL BRACKET
0xFF08, // FULLWIDTH LEFT PARENTHESIS
0xFF1C, // FULLWIDTH LESS-THAN SIGN
0xFF3B, // FULLWIDTH LEFT SQUARE BRACKET
0xFF5B, // FULLWIDTH LEFT CURLY BRACKET
0xFF62, // HALFWIDTH LEFT CORNER BRACKET
0xFFE9 // HALFWIDTH LEFTWARDS ARROW
};
const WCHAR awchNonBreakingAtLineStart[] = {
0x0029, // RIGHT PARENTHESIS
0x002D, // HYPHEN
0x005D, // RIGHT SQUARE BRACKET
0x007D, // RIGHT CURLY BRACKET
0x00AD, // OPTIONAL HYPHEN
0x00BB, // RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
0x02C7, // CARON
0x02C9, // MODIFIER LETTER MACRON
0x055D, // ARMENIAN COMMA
0x060C, // ARABIC COMMA
0x2013, // EN DASH
0x2014, // EM DASH
0x2016, // DOUBLE VERTICAL LINE
0x201D, // RIGHT DOUBLE QUOTATION MARK
0x2022, // BULLET
0x2025, // TWO DOT LEADER
0x2026, // HORIZONTAL ELLIPSIS
0x2027, // HYPHENATION POINT
0x203A, // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
0x2046, // RIGHT SQUARE BRACKET WITH QUILL
0x207E, // SUPERSCRIPT RIGHT PARENTHESIS
0x208E, // SUBSCRIPT RIGHT PARENTHESIS
0x226B, // MUCH GREATER THAN
0x2574, // BOX DRAWINGS LIGHT LEFT
0x3001, // IDEOGRAPHIC COMMA
0x3002, // IDEOGRAPHIC FULL STOP
0x3003, // DITTO MARK
0x3005, // IDEOGRAPHIC ITERATION MARK
0x3009, // RIGHT ANGLE BRACKET
0x300B, // RIGHT DOUBLE ANGLE BRACKET
0x300D, // RIGHT CORNER BRACKET
0x300F, // RIGHT WHITE CORNER BRACKET
0x3011, // RIGHT BLACK LENTICULAR BRACKET
0x3015, // RIGHT TORTOISE SHELL BRACKET
0x3017, // RIGHT WHITE LENTICULAR BRACKET
0x3019, // RIGHT WHITE TORTOISE SHELL BRACKET
0x301B, // RIGHT WHITE SQUARE BRACKET
0x301E, // DOUBLE PRIME QUOTATION MARK
0x3041, // HIRAGANA LETTER SMALL A
0x3043, // HIRAGANA LETTER SMALL I
0x3045, // HIRAGANA LETTER SMALL U
0x3047, // HIRAGANA LETTER SMALL E
0x3049, // HIRAGANA LETTER SMALL O
0x3063, // HIRAGANA LETTER SMALL TU
0x3083, // HIRAGANA LETTER SMALL YA
0x3085, // HIRAGANA LETTER SMALL YU
0x3087, // HIRAGANA LETTER SMALL YO
0x308E, // HIRAGANA LETTER SMALL WA
0x309B, // KATAKANA-HIRAGANA VOICED SOUND MARK
0x309C, // KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
0x309D, // HIRAGANA ITERATION MARK
0x309E, // HIRAGANA VOICED ITERATION MARK
0x30A1, // KATAKANA LETTER SMALL A
0x30A3, // KATAKANA LETTER SMALL I
0x30A5, // KATAKANA LETTER SMALL U
0x30A7, // KATAKANA LETTER SMALL E
0x30A9, // KATAKANA LETTER SMALL O
0x30C3, // KATAKANA LETTER SMALL TU
0x30E3, // KATAKANA LETTER SMALL YA
0x30E5, // KATAKANA LETTER SMALL YU
0x30E7, // KATAKANA LETTER SMALL YO
0x30EE, // KATAKANA LETTER SMALL WA
0x30F5, // KATAKANA LETTER SMALL KA
0x30F6, // KATAKANA LETTER SMALL KE
0x30FC, // KATAKANA-HIRAGANA PROLONGED SOUND MARK
0x30FD, // KATAKANA ITERATION MARK
0x30FE, // KATAKANA VOICED ITERATION MARK
0xFD3F, // ORNATE RIGHT PARENTHESIS
0xFE30, // VERTICAL TWO DOT LEADER
0xFE31, // VERTICAL EM DASH
0xFE33, // VERTICAL LOW LINE
0xFE34, // VERTICAL WAVY LOW LINE
0xFE36, // PRESENTATION FORM FOR VERTICAL RIGHT PARENTHESIS
0xFE38, // PRESENTATION FORM FOR VERTICAL RIGHT CURLY BRACKET
0xFE3A, // PRESENTATION FORM FOR VERTICAL RIGHT TORTOISE SHELL BRACKET
0xFE3C, // PRESENTATION FORM FOR VERTICAL RIGHT BLACK LENTICULAR BRACKET
0xFE3E, // PRESENTATION FORM FOR VERTICAL RIGHT DOUBLE ANGLE BRACKET
0xFE40, // PRESENTATION FORM FOR VERTICAL RIGHT ANGLE BRACKET
0xFE42, // PRESENTATION FORM FOR VERTICAL RIGHT CORNER BRACKET
0xFE44, // PRESENTATION FORM FOR VERTICAL RIGHT WHITE CORNER BRACKET
0xFE4F, // WAVY LOW LINE
0xFE50, // SMALL COMMA
0xFE51, // SMALL IDEOGRAPHIC COMMA
0xFE5A, // SMALL RIGHT PARENTHESIS
0xFE5C, // SMALL RIGHT CURLY BRACKET
0xFE5E, // SMALL RIGHT TORTOISE SHELL BRACKET
0xFF09, // FULLWIDTH RIGHT PARENTHESIS
0xFF0C, // FULLWIDTH COMMA
0xFF0E, // FULLWIDTH FULL STOP
0xFF1E, // FULLWIDTH GREATER-THAN SIGN
0xFF3D, // FULLWIDTH RIGHT SQUARE BRACKET
0xFF40, // FULLWIDTH GRAVE ACCENT
0xFF5C, // FULLWIDTH VERTICAL LINE
0xFF5D, // FULLWIDTH RIGHT CURLY BRACKET
0xFF5E, // FULLWIDTH TILDE
0xFF61, // HALFWIDTH IDEOGRAPHIC FULL STOP
0xFF63, // HALFWIDTH RIGHT CORNER BRACKET
0xFF64, // HALFWIDTH IDEOGRAPHIC COMMA
0xFF67, // HALFWIDTH KATAKANA LETTER SMALL A
0xFF68, // HALFWIDTH KATAKANA LETTER SMALL I
0xFF69, // HALFWIDTH KATAKANA LETTER SMALL U
0xFF6A, // HALFWIDTH KATAKANA LETTER SMALL E
0xFF6B, // HALFWIDTH KATAKANA LETTER SMALL O
0xFF6C, // HALFWIDTH KATAKANA LETTER SMALL YA
0xFF6D, // HALFWIDTH KATAKANA LETTER SMALL YU
0xFF6E, // HALFWIDTH KATAKANA LETTER SMALL YO
0xFF6F, // HALFWIDTH KATAKANA LETTER SMALL TU
0xFF70, // HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
0xFF9E, // HALFWIDTH KATAKANA VOICED SOUND MARK
0xFF9F, // HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
0xFFEB // HALFWIDTH RIGHTWARDS ARROW
};
const WCHAR awchRomanInterWordSpace[] = {
0x0009, // TAB
0x0020, // SPACE
0x2002, // EN SPACE
0x2003, // EM SPACE
0x2004, // THREE-PER-EM SPACE
0x2005, // FOUR-PER-EM SPACE
0x2006, // SIX-PER-EM SPACE
0x2007, // FIGURE SPACE
0x2008, // PUNCTUATION SPACE
0x2009, // THIN SPACE
0x200A, // HAIR SPACE
0x200B // ZERO WIDTH SPACE
};
BOOL ScanWChar(const WCHAR awch[], int nArraySize, WCHAR wch)
{
int iMin = 0;
int iMax = nArraySize - 1;
while (iMax - iMin >= 2)
{
int iTry = (iMax + iMin + 1) / 2;
if (wch < awch[iTry])
iMax = iTry;
else if (wch > awch[iTry])
iMin = iTry;
else
return TRUE;
}
return (wch == awch[iMin] || wch == awch[iMax]);
}
#ifdef MLLBCONS_DEBUG
void TestTable(const WCHAR awch[], int nArraySize)
{
int nDummy;
for (int i = 0; i < nArraySize - 1; i++)
{
if (awch[i] >= awch[i + 1])
nDummy = 0;
}
int cFound = 0;
for (int n = 0; n < 0x10000; n++)
{
if (ScanWChar(awch, nArraySize, n))
{
cFound++;
for (i = 0; i < nArraySize; i++)
{
if (awch[i] == n)
break;
}
ASSERT(i < nArraySize);
}
}
ASSERT(cFound == nArraySize);
}
#endif
/////////////////////////////////////////////////////////////////////////////
// CMLLBCons
STDMETHODIMP CMLLBCons::BreakLineML(IMLangString* pSrcMLStr, long lSrcPos, long lSrcLen, long cMinColumns, long cMaxColumns, long* plLineLen, long* plSkipLen)
{
#ifdef MLLBCONS_DEBUG
TestTable(awchNonBreakingAtLineEnd, ARRAYSIZE(awchNonBreakingAtLineEnd));
TestTable(awchNonBreakingAtLineStart, ARRAYSIZE(awchNonBreakingAtLineStart));
TestTable(awchRomanInterWordSpace, ARRAYSIZE(awchRomanInterWordSpace));
#endif
ASSERT_THIS;
ASSERT_READ_PTR(pSrcMLStr);
ASSERT_WRITE_PTR_OR_NULL(plLineLen);
ASSERT_WRITE_PTR_OR_NULL(plSkipLen);
HRESULT hr;
IMLangStringWStr* pMLStrWStr;
long lStrLen;
long lBreakPos = -1; // Break at default position(cMaxColumns)
long lSkipLen = 0;
long lPrevBreakPos = 0;
long lPrevSkipLen = 0;
if (SUCCEEDED(hr = pSrcMLStr->QueryInterface(IID_IMLangStringWStr, (void**)&pMLStrWStr)) &&
SUCCEEDED(hr = pSrcMLStr->GetLength(&lStrLen)) &&
SUCCEEDED(hr = ::RegularizePosLen(lStrLen, &lSrcPos, &lSrcLen)))
{
long cColumns = 0;
#ifndef ASTRIMPL
long lSrcPosTemp = lSrcPos;
long lSrcLenTemp = lSrcLen;
#endif
long lCandPos = 0;
struct {
unsigned fDone : 1;
unsigned fInSpaces : 1;
unsigned fFEChar : 1;
unsigned fInFEChar : 1;
unsigned fBreakByEndOfLine : 1;
unsigned fNonBreakNext : 1;
unsigned fHaveCandPos : 1;
unsigned fSlashR : 1;
} Flags = {0, 0, 0, 0, 0, 0, 0, 0};
#ifdef ASTRIMPL
CCharType<CT_CTYPE3, 128> ct3;
CMLStrWalkW StrWalk(pMLStrWStr, lSrcPos, lSrcLen);
#else
LCID locale;
hr = pMLStrWStr->GetLocale(0, -1, &locale, NULL, NULL);
CCharType<CT_CTYPE3, 128> ct3(locale);
#endif
#ifdef ASTRIMPL
while (StrWalk.Lock(hr))
{
ct3.Flush();
for (int iCh = 0; iCh < StrWalk.GetCCh(); iCh++)
{
const WCHAR wch = StrWalk.GetStr()[iCh];
const WORD wCharType3 = ct3.GetCharType(pSrcMLStr, StrWalk.GetPos() + iCh, StrWalk.GetLen() - iCh, &hr);
if (FAILED(hr))
break;
#else
while (lSrcLenTemp > 0 && SUCCEEDED(hr))
{
WCHAR* pszBuf;
long cchBuf;
long lLockedLen;
ct3.Flush();
if (SUCCEEDED(hr = pMLStrWStr->LockWStr(lSrcPosTemp, lSrcLenTemp, MLSTR_READ, 0, &pszBuf, &cchBuf, &lLockedLen)))
{
for (int iCh = 0; iCh < cchBuf; iCh++)
{
const WCHAR wch = pszBuf[iCh];
const WORD wCharType3 = ct3.GetCharType(pszBuf + iCh, cchBuf - iCh);
#endif
const int nWidth = (wCharType3 & C3_HALFWIDTH) ? 1 : 2;
if (wch == L'\r' && !Flags.fSlashR)
{
Flags.fSlashR = TRUE;
}
else if (wch == L'\n' || Flags.fSlashR) // End of line
{
Flags.fDone = TRUE;
Flags.fBreakByEndOfLine = TRUE;
if (Flags.fInSpaces)
{
Flags.fHaveCandPos = FALSE;
lBreakPos = lCandPos;
lSkipLen++; // Skip spaces and line break character
}
else
{
#ifdef ASTRIMPL
lBreakPos = StrWalk.GetPos() + iCh; // Break at right before the end of line
#else
lBreakPos = lSrcPosTemp + iCh; // Break at right before the end of line
#endif
if (Flags.fSlashR)
lBreakPos--;
lSkipLen = 1; // Skip line break character
}
if (wch == L'\n' && Flags.fSlashR)
lSkipLen++;
break;
}
else if (ScanWChar(awchRomanInterWordSpace, ARRAYSIZE(awchRomanInterWordSpace), wch)) // Spaces
{
if (!Flags.fInSpaces)
{
Flags.fHaveCandPos = TRUE;
#ifdef ASTRIMPL
lCandPos = StrWalk.GetPos() + iCh; // Break at right before the spaces
#else
lCandPos = lSrcPosTemp + iCh; // Break at right before the spaces
#endif
lSkipLen = 0;
}
Flags.fInSpaces = TRUE;
lSkipLen++; // Skip continuous spaces after breaking
}
else // Other characters
{
Flags.fFEChar = ((wCharType3 & (C3_KATAKANA | C3_HIRAGANA | C3_FULLWIDTH | C3_IDEOGRAPH)) != 0);
if ((Flags.fFEChar || Flags.fInFEChar) && !Flags.fNonBreakNext && !Flags.fInSpaces)
{
Flags.fHaveCandPos = TRUE;
#ifdef ASTRIMPL
lCandPos = StrWalk.GetPos() + iCh; // Break at right before or after the FE char
#else
lCandPos = lSrcPosTemp + iCh; // Break at right before or after the FE char
#endif
lSkipLen = 0;
}
Flags.fInFEChar = Flags.fFEChar;
Flags.fInSpaces = FALSE;
if (Flags.fHaveCandPos)
{
Flags.fHaveCandPos = FALSE;
if (!ScanWChar(awchNonBreakingAtLineStart, ARRAYSIZE(awchNonBreakingAtLineStart), wch))
lBreakPos = lCandPos;
}
if (cColumns + nWidth > cMaxColumns)
{
Flags.fDone = TRUE;
if (Flags.fNonBreakNext && lPrevSkipLen)
{
lBreakPos = lPrevBreakPos;
lSkipLen = lPrevSkipLen;
}
break;
}
Flags.fNonBreakNext = ScanWChar(awchNonBreakingAtLineEnd, ARRAYSIZE(awchNonBreakingAtLineEnd), wch);
if (Flags.fNonBreakNext)
{
// Need to remember previous break postion in case the line been terminated by the max columns
lPrevBreakPos = lBreakPos;
lPrevSkipLen = lSkipLen;
}
}
cColumns += nWidth;
}
#ifdef ASTRIMPL
StrWalk.Unlock(hr);
if (Flags.fDone && SUCCEEDED(hr))
break;
#else
HRESULT hrTemp = pMLStrWStr->UnlockWStr(pszBuf, 0, NULL, NULL);
if (FAILED(hrTemp) && SUCCEEDED(hr))
hr = hrTemp;
if (Flags.fDone && SUCCEEDED(hr))
break;
lSrcPosTemp += lLockedLen;
lSrcLenTemp -= lLockedLen;
}
#endif
}
pMLStrWStr->Release();
if (Flags.fHaveCandPos)
lBreakPos = lCandPos;
if (SUCCEEDED(hr) && !Flags.fBreakByEndOfLine && lBreakPos - lSrcPos < cMinColumns)
{
lBreakPos = min(lSrcLen, cMaxColumns) + lSrcPos; // Default breaking
lSkipLen = 0;
}
if (SUCCEEDED(hr) && !Flags.fDone)
{
if (Flags.fInSpaces)
{
lBreakPos = lSrcLen - lSkipLen;
}
else
{
lBreakPos = lSrcLen;
lSkipLen = 0;
}
if (Flags.fSlashR)
{
lBreakPos--;
lSkipLen++;
}
}
}
if (SUCCEEDED(hr))
{
if (plLineLen)
*plLineLen = lBreakPos - lSrcPos;
if (plSkipLen)
*plSkipLen = lSkipLen;
}
else
{
if (plLineLen)
*plLineLen = 0;
if (plSkipLen)
*plSkipLen = 0;
}
return hr;
}
STDMETHODIMP CMLLBCons::BreakLineW(LCID locale, const WCHAR* pszSrc, long cchSrc, long lMaxColumns, long* pcchLine, long* pcchSkip)
{
ASSERT_THIS;
ASSERT_READ_BLOCK(pszSrc, cchSrc);
ASSERT_WRITE_PTR_OR_NULL(pcchLine);
ASSERT_WRITE_PTR_OR_NULL(pcchSkip);
HRESULT hr = S_OK;
IMLangStringWStr* pMLStrW;
if (SUCCEEDED(hr = PrepareMLStrClass()) &&
SUCCEEDED(hr = m_pMLStrClass->CreateInstance(NULL, IID_IMLangStringWStr, (void**)&pMLStrW)))
{
CMLStrBufConstStackW StrBuf((LPWSTR)pszSrc, cchSrc);
long lLineLen;
long lSkipLen;
hr = pMLStrW->SetStrBufW(0, -1, &StrBuf, NULL, NULL);
if (SUCCEEDED(hr))
hr = pMLStrW->SetLocale(0, -1, locale);
if (SUCCEEDED(hr))
hr = BreakLineML(pMLStrW, 0, -1, 0, lMaxColumns, (pcchLine || pcchSkip) ? &lLineLen : NULL, (pcchSkip) ? &lSkipLen : NULL);
if (SUCCEEDED(hr) && pcchLine)
hr = pMLStrW->GetWStr(0, lLineLen, NULL, 0, pcchLine, NULL);
if (SUCCEEDED(hr) && pcchSkip)
hr = pMLStrW->GetWStr(lLineLen, lSkipLen, NULL, 0, pcchSkip, NULL);
pMLStrW->Release();
}
if (FAILED(hr))
{
if (pcchLine)
*pcchLine = 0;
if (pcchSkip)
*pcchSkip = 0;
}
return hr;
}
STDMETHODIMP CMLLBCons::BreakLineA(LCID locale, UINT uCodePage, const CHAR* pszSrc, long cchSrc, long lMaxColumns, long* pcchLine, long* pcchSkip)
{
ASSERT_THIS;
ASSERT_READ_BLOCK(pszSrc, cchSrc);
ASSERT_WRITE_PTR_OR_NULL(pcchLine);
ASSERT_WRITE_PTR_OR_NULL(pcchSkip);
HRESULT hr = S_OK;
IMLangStringAStr* pMLStrA;
if (uCodePage == 50000)
uCodePage = 1252;
if (SUCCEEDED(hr = PrepareMLStrClass()) &&
SUCCEEDED(hr = m_pMLStrClass->CreateInstance(NULL, IID_IMLangStringAStr, (void**)&pMLStrA)))
{
CMLStrBufConstStackA StrBuf((LPSTR)pszSrc, cchSrc);
long lLineLen;
long lSkipLen;
hr = pMLStrA->SetStrBufA(0, -1, uCodePage, &StrBuf, NULL, NULL);
if (SUCCEEDED(hr))
hr = pMLStrA->SetLocale(0, -1, locale);
if (SUCCEEDED(hr))
hr = BreakLineML(pMLStrA, 0, -1, 0, lMaxColumns, (pcchLine || pcchSkip) ? &lLineLen : NULL, (pcchSkip) ? &lSkipLen : NULL);
if (SUCCEEDED(hr) && pcchLine)
hr = pMLStrA->GetAStr(0, lLineLen, uCodePage, NULL, NULL, 0, pcchLine, NULL);
if (SUCCEEDED(hr) && pcchSkip)
hr = pMLStrA->GetAStr(lLineLen, lSkipLen, uCodePage, NULL, NULL, 0, pcchSkip, NULL);
pMLStrA->Release();
}
if (FAILED(hr))
{
if (pcchLine)
*pcchLine = 0;
if (pcchSkip)
*pcchSkip = 0;
}
return hr;
}