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bug 174424 

[ctl]Fix problem in handling of Choti E-Matra (093f)
r=Roland.Mainz@informatik.med.uni-giessen.de
CTL is not part of default build
patch from prabhat.hegde@sun.com
This commit is contained in:
katakai%japan.sun.com 2003-01-22 03:54:31 +00:00
Родитель 19f17ce0f6
Коммит 303ea7e78b
1 изменённых файлов: 76 добавлений и 17 удалений
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93
intl/ctl/src/hindiShaper/dvng-x.c
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@ -30,6 +30,64 @@
#define MAX_CLUSTER_CHRS 256
#define MAX_GLYPHS 256
/*************************************************************************
* CHARACTER TYPE CONSTANTS - What they represent *
* ----------------------------------------------- *
* *
* _NP : Vowel-Modifier Visarg(U+0903) (Displayed to the right). *
* _UP : Vowel-Modifer Chandrabindu(U+0901) and Anuswar (U+0902). *
* Displayed above the Consonant/Vowel *
* _IV : Independant Vowels *
* _CN : All consonants except _CK and _RC below *
* _CK : Consonants that can be followed by a Nukta(U+093C). Characters *
* (U+0958-U+095F). No clue why Unicode imposed it on Devanagari. *
* _RC : Consonant Ra - Needs to handle 'Reph' *
* _NM : Handle special case of Matras when followed by a Chandrabindu/ *
* Anuswar. *
* _IM : Choti I Matra (U+093F). Needs to handle re-ordering. *
* _HL : Halant (U+094D) *
* _NK : Nukta (U+093C) *
* _VD : For Vedic extension characters (U+0951 - U+0954) *
* _HD : Hindu Numerals written in Devanagari *
* _MS : For Matras such U+0941, U+0942 which need to be attached to the *
* holding consonant at the Stem. *
* _RM : A cluster of Ra+Halant at the begining would be represented by *
* a Reph (placed in sun.unicode.india-0 at 0xF812). Reph is *
* typically attached on top of the last consonant. *
* _II_M, _EY_M, _AI_M, _OW1_M, _OW2_M, _AYE_M, _EE_M, _AWE_M, _O_M, *
* : Separate glyphs are provided which combine matra with a reph. *
* Matras which need to use this are represented by the above. *
*************************************************************************/
/*************************************************************************
* CLUSTERING LOGIC *
* ---------------- *
* *
* Notations used to describe Devanagari Script Generic Info: *
* D : Vowel-Modifiers (U+0901 - U+0903) *
* V : Vowels (U+0905 - U+0913) & (U+0960, U+0961) *
* C : Consonants (U+0915 - U+0939) *
* M : Matras (U+093E - U+094C) & (U+0962, U+0963) *
* H : Halant (U+094D) *
* N : Nukta (U+093C) *
* *
* RULES:- *
* ------- *
* Syllable/Cluster types *
* *
* 1] Vowel Syllable ::- V[D] *
* 2] Cons - Vowel Syllable ::- [Cons-Syllable] Full- Cons [M] [D] *
* 3] Cons-Syllable ::- [Pure-Cons][Pure-Cons] Pure-Cons *
* 4] Pure-Cons ::- Full-Cons H *
* 5] Full-Cons ::- C[N] *
* *
* Notes: *
* 1] Nukta (N) can come after only those consonants with which it can *
* combine, ie U+0915-U+0917, U+091C, U+0921, U+0922, U+092B & U+092F *
* 2] Worst case Vowel cluster - V D *
* 3] A worst case Consonant cluster: C N H C N H C N H C N M D *
*************************************************************************/
/*
* Devanagari character classes
*/
@ -996,7 +1054,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
}
else {
gLst[nGlyphs++] = PANGO_MOZ_MAKE_GLYPH(0xF7C0);
GetBaseConsGlyphs(cluster, nChars, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars, gLst, &nGlyphs);
}
break;
@ -1005,14 +1063,14 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
case St4:
case St5:
case St6:
GetBaseConsGlyphs(cluster, nChars, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars, gLst, &nGlyphs);
break;
case St7:
if (IsDvngCharCls(cluster[nChars - 1], _UP)) {
if (IsDvngCharCls(cluster[nChars - 2], _RM))
GetBaseConsGlyphs(cluster, nChars - 2, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars - 2,gLst, &nGlyphs);
if (IsDvngCharCls(cluster[nChars - 2], _RM)) {
@ -1056,11 +1114,11 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
}
}
else
GetBaseConsGlyphs(cluster, nChars, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars, gLst, &nGlyphs);
break;
case St8:
GetBaseConsGlyphs(cluster, nChars - 1, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars - 1, gLst, &nGlyphs);
if (IsKern(gLst[nGlyphs - 1])) {
dummy = gLst[nGlyphs - 1];
gLst[nGlyphs - 1] = PANGO_MOZ_MAKE_GLYPH(cluster[nChars - 1]);
@ -1076,7 +1134,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
else
gLst[nGlyphs++] = PANGO_MOZ_MAKE_GLYPH(0xF817);
GetBaseConsGlyphs(cluster, nChars - 1, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars - 1, gLst, &nGlyphs);
break;
case St10:
@ -1085,11 +1143,11 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
else
gLst[nGlyphs++] = PANGO_MOZ_MAKE_GLYPH(0xF818);
GetBaseConsGlyphs(cluster, nChars - 2, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars - 2, gLst, &nGlyphs);
break;
case St11:
GetBaseConsGlyphs(cluster, nChars, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster, nChars, gLst, &nGlyphs);
break;
case St12:
@ -1104,7 +1162,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
break;
case St14:
GetBaseConsGlyphs(cluster+2, nChars - 2, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 2, gLst, &nGlyphs);
if (IsKern(gLst[nGlyphs - 1])) {
dummy = gLst[nGlyphs - 1];
gLst[nGlyphs - 1] = PANGO_MOZ_MAKE_GLYPH(0xF812);
@ -1115,7 +1173,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
break;
case St15:
GetBaseConsGlyphs(cluster+2, nChars - 3, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 3, gLst, &nGlyphs);
if (IsKern(gLst[nGlyphs - 1])) {
dummy = gLst[nGlyphs - 2];
gLst[nGlyphs - 2] = PANGO_MOZ_MAKE_GLYPH(0xF812);
@ -1130,9 +1188,9 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
case St16:
if (IsDvngCharCls(cluster[nChars - 1], _RM))
GetBaseConsGlyphs(cluster+2, nChars - 3, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 3, gLst, &nGlyphs);
else
GetBaseConsGlyphs(cluster+2, nChars - 2, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 2, gLst, &nGlyphs);
if (IsDvngCharCls(cluster[nChars - 1], ~(_RM))){
@ -1171,9 +1229,9 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
if (IsDvngCharCls(cluster[nChars - 1], _UP)) {
if (IsDvngCharCls(cluster[nChars - 2], _RM))
GetBaseConsGlyphs(cluster+2, nChars - 4, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 4, gLst, &nGlyphs);
else
GetBaseConsGlyphs(cluster+2, nChars - 3, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 3, gLst, &nGlyphs);
if (IsDvngCharCls(cluster[nChars - 2], ~(_RM))) {
@ -1207,7 +1265,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
break;
case St18:
GetBaseConsGlyphs(cluster-2, nChars-3, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster-2, nChars-3, gLst, &nGlyphs);
if (IsKern(gLst[nGlyphs - 1])) {
dummy = gLst[nGlyphs - 1];
gLst[nGlyphs - 1] = PANGO_MOZ_MAKE_GLYPH(0xF813);
@ -1223,7 +1281,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
else
gLst[nGlyphs++] = PANGO_MOZ_MAKE_GLYPH(0xF819);
GetBaseConsGlyphs(cluster+2, nChars-3, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars-3, gLst, &nGlyphs);
break;
case St20:
@ -1232,7 +1290,7 @@ get_adjusted_glyphs_list(DvngFontInfo *fontInfo,
else
gLst[nGlyphs++] = PANGO_MOZ_MAKE_GLYPH(0xF81A);
GetBaseConsGlyphs(cluster+2, nChars - 4, &gLst[nGlyphs], &nGlyphs);
GetBaseConsGlyphs(cluster+2, nChars - 4, gLst, &nGlyphs);
break;
}
}
@ -1328,6 +1386,7 @@ dvng_engine_shape(const char *fontCharset,
p = text;
while (p < text + length) {
log_cluster = p;
aSt = St0;
p = get_next_cluster(p, text + length - p, cluster, &num_chrs, &aSt);
add_cluster(fontInfo, glyphs, log_cluster-text, cluster, num_chrs, &aSt);
}