зеркало из https://github.com/mozilla/gecko-dev.git
Bug 255990 Characters below U+0100 are not subject to line-breaking rules at all. the patch based on jshin's patch. r=jshin, sr=roc
This commit is contained in:
masayuki%d-toybox.com
Родитель
634828ca74
Коммит
421034d9e5
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@ -43,10 +43,10 @@
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#define NS_LINEBREAKER_NEED_MORE_TEXT -1
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// {E86B3375-BF89-11d2-B3AF-00805F8A6670}
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// {7509772F-770C-44e8-AAFA-8032E5A35370}
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#define NS_ILINEBREAKER_IID \
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{ 0xe86b3375, 0xbf89, 0x11d2, \
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{ 0xb3, 0xaf, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
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{ 0x7509772f, 0x770c, 0x44e8, \
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{ 0xaa, 0xfa, 0x80, 0x32, 0xe5, 0xa3, 0x53, 0x70 } }
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class nsILineBreaker : public nsISupports
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@ -57,6 +57,10 @@ public:
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const PRUnichar* aText2 ,
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PRUint32 aTextLen2) = 0;
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virtual PRBool CanBreakBetweenLatin1(PRUnichar aChar1,
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PRUnichar aChar2) = 0;
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virtual PRInt32 Next( const PRUnichar* aText, PRUint32 aLen,
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PRUint32 aPos) = 0;
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@ -44,7 +44,7 @@ static const PRUint32 gLBClass00[32] = {
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0x55555555, // U+0010 - U+0017
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0x55555555, // U+0018 - U+001F
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0x88438815, // U+0020 - U+0027
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0x81515810, // U+0028 - U+002F
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0x11515810, // U+0028 - U+002F
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0x66666666, // U+0030 - U+0037
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0x11501166, // U+0038 - U+003F
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0x88888888, // U+0040 - U+0047
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@ -350,12 +350,19 @@ nsJISx4051LineBreaker::~nsJISx4051LineBreaker()
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NS_IMPL_ISUPPORTS1(nsJISx4051LineBreaker, nsILineBreaker)
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#define U_PERIOD ((PRUnichar) '.')
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#define U_COMMA ((PRUnichar) ',')
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#define U_SPACE ((PRUnichar) ' ')
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#define U_RIGHT_SINGLE_QUOTATION_MARK ((PRUnichar) 0x2019)
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#define U_PERIOD PRUnichar('.')
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#define U_COMMA PRUnichar(',')
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#define U_COLON PRUnichar(':')
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#define U_SEMICOLON PRUnichar(';')
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#define U_SLASH PRUnichar('/')
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#define U_SPACE PRUnichar(' ')
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#define U_NULL PRUnichar(0x0000)
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#define U_RIGHT_SINGLE_QUOTATION_MARK PRUnichar(0x2019)
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#define NEED_CONTEXTUAL_ANALYSIS(c) ((c) == U_PERIOD || \
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(c) == U_COMMA || \
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(c) == U_COLON || \
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(c) == U_SEMICOLON || \
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(c) == U_SLASH || \
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(c) == U_RIGHT_SINGLE_QUOTATION_MARK)
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#define NUMERIC_CLASS 6 // JIS x4051 class 15 is now map to simplified class 6
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#define CHARACTER_CLASS 8 // JIS x4051 class 18 is now map to simplified class 8
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@ -365,17 +372,17 @@ PRInt8 nsJISx4051LineBreaker::ContextualAnalysis(
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PRUnichar prev, PRUnichar cur, PRUnichar next
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)
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{
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if(U_COMMA == cur)
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if(U_COMMA == cur || U_COLON == cur || U_SEMICOLON == cur)
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{
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if(IS_ASCII_DIGIT (prev) && IS_ASCII_DIGIT (next))
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if((IS_ASCII_DIGIT(prev) || prev == U_NULL) && IS_ASCII_DIGIT(next))
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return NUMERIC_CLASS;
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}
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else if(U_PERIOD == cur)
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{
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if((IS_ASCII_DIGIT (prev) || (0x0020 == prev)) &&
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IS_ASCII_DIGIT (next))
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if((IS_ASCII_DIGIT(prev) || prev == U_SPACE || prev == U_NULL) &&
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IS_ASCII_DIGIT(next))
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return NUMERIC_CLASS;
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// By assigning a full stop character class only when it's followed by
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// class 6 (numeric), 7, and 8 (character). Note that class 9 (Thai)
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// doesn't matter, either way, we prevent lines from breaking around
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@ -387,6 +394,12 @@ PRInt8 nsJISx4051LineBreaker::ContextualAnalysis(
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if((pc > 5 || pc == 0) && GetClass(next) > 5)
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return CHARACTER_CLASS;
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}
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else if(U_SLASH == cur)
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{
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// We don't need to check prev character. Because SLASH breaks only after.
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if (IS_ASCII_DIGIT(next))
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return NUMERIC_CLASS;
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}
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else if(U_RIGHT_SINGLE_QUOTATION_MARK == cur)
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{
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// somehow people use this as ' in "it's" sometimes...
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@ -396,6 +409,25 @@ PRInt8 nsJISx4051LineBreaker::ContextualAnalysis(
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return this->GetClass(cur);
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}
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PRBool nsJISx4051LineBreaker::CanBreakBetweenLatin1(PRUnichar aChar1,
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PRUnichar aChar2)
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{
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NS_ASSERTION(aChar1 < 256 && aChar2 < 256, "invalid input");
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PRInt8 c1, c2;
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if(NEED_CONTEXTUAL_ANALYSIS(aChar1))
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c1 = this->ContextualAnalysis(U_NULL, aChar1, aChar2);
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else
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c1 = this->GetClass(aChar1);
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if(NEED_CONTEXTUAL_ANALYSIS(aChar2))
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c2 = this->ContextualAnalysis(aChar1, aChar2, U_NULL);
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else
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c2 = this->GetClass(aChar2);
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return GetPair(c1, c2);
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}
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PRBool nsJISx4051LineBreaker::BreakInBetween(
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const PRUnichar* aText1 , PRUint32 aTextLen1,
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@ -408,34 +440,9 @@ PRBool nsJISx4051LineBreaker::BreakInBetween(
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return PR_FALSE;
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}
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//search for CJK characters until a space is found.
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//if CJK char is found before space, use 4051, otherwise western
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PRInt32 cur;
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for (cur= aTextLen1-1; cur>=0; cur--)
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{
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if (IS_SPACE(aText1[cur]))
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break;
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if (IS_CJK_CHAR(aText1[cur]))
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goto ROUTE_CJK_BETWEEN;
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}
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for (cur= 0; cur < (PRInt32)aTextLen2; cur++)
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{
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if (IS_SPACE(aText2[cur]))
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break;
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if (IS_CJK_CHAR(aText2[cur]))
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goto ROUTE_CJK_BETWEEN;
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}
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//now apply western rule.
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return IS_SPACE(aText1[aTextLen1-1]) || IS_SPACE(aText2[0]);
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ROUTE_CJK_BETWEEN:
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PRInt8 c1, c2;
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if(NEED_CONTEXTUAL_ANALYSIS(aText1[aTextLen1-1]))
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c1 = this->ContextualAnalysis((aTextLen1>1)?aText1[aTextLen1-2]:0,
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c1 = this->ContextualAnalysis((aTextLen1>1)?aText1[aTextLen1-2]:U_NULL,
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aText1[aTextLen1-1],
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aText2[0]);
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else
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@ -444,7 +451,7 @@ ROUTE_CJK_BETWEEN:
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if(NEED_CONTEXTUAL_ANALYSIS(aText2[0]))
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c2 = this->ContextualAnalysis(aText1[aTextLen1-1],
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aText2[0],
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(aTextLen2>1)?aText2[1]:0);
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(aTextLen2>1)?aText2[1]:U_NULL);
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else
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c2 = this->GetClass(aText2[0]);
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@ -466,26 +473,13 @@ PRInt32 nsJISx4051LineBreaker::Next(
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NS_ASSERTION(aText, "aText shouldn't be null");
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NS_ASSERTION(aLen > aPos, "Illegal value (length > position)");
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//forward check for CJK characters until a space is found.
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//if CJK char is found before space, use 4051, otherwise western
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PRUint32 cur;
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for (cur = aPos; cur < aLen; ++cur)
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{
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if (IS_SPACE(aText[cur]))
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return cur;
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if (IS_CJK_CHAR(aText[cur]))
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goto ROUTE_CJK_NEXT;
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}
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return NS_LINEBREAKER_NEED_MORE_TEXT; // Need more text
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ROUTE_CJK_NEXT:
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PRInt8 c1, c2;
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cur = aPos;
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PRUint32 cur = aPos;
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if(NEED_CONTEXTUAL_ANALYSIS(aText[cur]))
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{
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c1 = this->ContextualAnalysis((cur>0)?aText[cur-1]:0,
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c1 = this->ContextualAnalysis((cur>0)?aText[cur-1]:U_NULL,
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aText[cur],
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(cur<(aLen-1)) ?aText[cur+1]:0);
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(cur<(aLen-1)) ?aText[cur+1]:U_NULL);
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} else {
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c1 = this->GetClass(aText[cur]);
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}
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@ -497,9 +491,9 @@ ROUTE_CJK_NEXT:
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{
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if(NEED_CONTEXTUAL_ANALYSIS(aText[cur]))
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{
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c2= this->ContextualAnalysis((cur>0)?aText[cur-1]:0,
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c2= this->ContextualAnalysis((cur>0)?aText[cur-1]:U_NULL,
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aText[cur],
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(cur<(aLen-1)) ?aText[cur+1]:0);
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(cur<(aLen-1)) ?aText[cur+1]:U_NULL);
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} else {
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c2 = this->GetClass(aText[cur]);
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}
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@ -517,31 +511,13 @@ PRInt32 nsJISx4051LineBreaker::Prev(
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{
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NS_ASSERTION(aText, "aText shouldn't be null");
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//backward check for CJK characters until a space is found.
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//if CJK char is found before space, use 4051, otherwise western
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PRUint32 cur;
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for (cur = aPos - 1; cur > 0; --cur)
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{
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if (IS_SPACE(aText[cur]))
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{
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if (cur != aPos - 1) // XXXldb Why?
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++cur;
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return cur;
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}
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if (IS_CJK_CHAR(aText[cur]))
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goto ROUTE_CJK_PREV;
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}
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return NS_LINEBREAKER_NEED_MORE_TEXT; // Need more text
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ROUTE_CJK_PREV:
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cur = aPos;
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PRUint32 cur = aPos;
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PRInt8 c1, c2;
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if(NEED_CONTEXTUAL_ANALYSIS(aText[cur-1]))
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{
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c2 = this->ContextualAnalysis(((cur-1)>0)?aText[cur-2]:0,
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c2 = this->ContextualAnalysis(((cur-1)>0)?aText[cur-2]:U_NULL,
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aText[cur-1],
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(cur<aLen) ?aText[cur]:0);
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(cur<aLen) ?aText[cur]:U_NULL);
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} else {
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c2 = this->GetClass(aText[cur-1]);
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}
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@ -553,9 +529,9 @@ ROUTE_CJK_PREV:
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{
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if(NEED_CONTEXTUAL_ANALYSIS(aText[cur-1]))
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{
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c1= this->ContextualAnalysis(((cur-1)>0)?aText[cur-2]:0,
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c1= this->ContextualAnalysis(((cur-1)>0)?aText[cur-2]:U_NULL,
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aText[cur-1],
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(cur<aLen) ?aText[cur]:0);
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(cur<aLen) ?aText[cur]:U_NULL);
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} else {
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c1 = this->GetClass(aText[cur-1]);
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}
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@ -48,6 +48,9 @@ public:
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nsJISx4051LineBreaker();
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virtual ~nsJISx4051LineBreaker();
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PRBool CanBreakBetweenLatin1(PRUnichar aChar1,
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PRUnichar aChar2);
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PRBool BreakInBetween( const PRUnichar* aText1 , PRUint32 aTextLen1,
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const PRUnichar* aText2 , PRUint32 aTextLen2);
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@ -1,4 +1,5 @@
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0028;;1
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002F;;2
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005B;;1
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007B;;1
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2018;;1
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@ -348,8 +348,11 @@ nsTextTransformer::ScanNormalAsciiText_F(PRInt32* aWordLen,
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bp2 += mBufferPos;
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}
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PRUnichar prevCh;
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PRUnichar ch = 0;
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for (; offset < fragLen; offset++) {
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unsigned char ch = *cp++;
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prevCh = (ch == ' ') ? CH_NBSP : ch;
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ch = *cp++;
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if (XP_IS_SPACE(ch)) {
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break;
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}
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@ -357,6 +360,10 @@ nsTextTransformer::ScanNormalAsciiText_F(PRInt32* aWordLen,
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ch = ' ';
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*aWasTransformed = PR_TRUE;
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}
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else if (offset != mOffset &&
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nsContentUtils::LineBreaker()->CanBreakBetweenLatin1(prevCh, ch)) {
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break;
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}
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else if (IS_DISCARDED(ch)) {
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// Strip discarded characters from the transformed output
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continue;
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