ICU-64232.0.1.tar.gz

[apple/icu.git] / icuSources / layout / LigatureSubstProc.cpp

diff --git a/icuSources/layout/LigatureSubstProc.cpp b/icuSources/layout/LigatureSubstProc.cpp
deleted file mode 100644 (file)
index 53f6f5a..0000000
--- a/icuSources/layout/LigatureSubstProc.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- *
- * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
- *
- */
-
-#include "LETypes.h"
-#include "MorphTables.h"
-#include "StateTables.h"
-#include "MorphStateTables.h"
-#include "SubtableProcessor.h"
-#include "StateTableProcessor.h"
-#include "LigatureSubstProc.h"
-#include "LEGlyphStorage.h"
-#include "LESwaps.h"
-
-U_NAMESPACE_BEGIN
-
-#define ExtendedComplement(m) ((le_int32) (~((le_uint32) (m))))
-#define SignBit(m) ((ExtendedComplement(m) >> 1) & (le_int32)(m))
-#define SignExtend(v,m) (((v) & SignBit(m))? ((v) | ExtendedComplement(m)): (v))
-
-UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LigatureSubstitutionProcessor)
-
-  LigatureSubstitutionProcessor::LigatureSubstitutionProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success)
-: StateTableProcessor(morphSubtableHeader, success), ligatureSubstitutionHeader(morphSubtableHeader, success)
-{
-    if(LE_FAILURE(success)) return;
-    ligatureActionTableOffset = SWAPW(ligatureSubstitutionHeader->ligatureActionTableOffset);
-    componentTableOffset = SWAPW(ligatureSubstitutionHeader->componentTableOffset);
-    ligatureTableOffset = SWAPW(ligatureSubstitutionHeader->ligatureTableOffset);
-
-    entryTable = LEReferenceToArrayOf<LigatureSubstitutionStateEntry>(stHeader, success, entryTableOffset, LE_UNBOUNDED_ARRAY);
-}
-
-LigatureSubstitutionProcessor::~LigatureSubstitutionProcessor()
-{
-}
-
-void LigatureSubstitutionProcessor::beginStateTable()
-{
-    m = -1;
-}
-
-ByteOffset LigatureSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index)
-{
-  LEErrorCode success = LE_NO_ERROR;
-  const LigatureSubstitutionStateEntry *entry = entryTable.getAlias(index, success);
-
-    ByteOffset newState = SWAPW(entry->newStateOffset);
-    le_int16 flags = SWAPW(entry->flags);
-
-    if (flags & lsfSetComponent) {
-        if (++m >= nComponents) {
-            m = 0;
-        }
-
-        componentStack[m] = currGlyph;
-    } else if ( m == -1) {
-        // bad font- skip this glyph.
-        currGlyph++;
-        return newState;
-    }
-
-    ByteOffset actionOffset = flags & lsfActionOffsetMask;
-
-    if (actionOffset != 0) {
-      LEReferenceTo<LigatureActionEntry> ap(stHeader, success, actionOffset);
-        LigatureActionEntry action;
-        le_int32 offset, i = 0;
-        le_int32 stack[nComponents];
-        le_int16 mm = -1;
-
-        do {
-            le_uint32 componentGlyph = componentStack[m--];
-
-            action = SWAPL(*ap.getAlias());
-            ap.addObject(success); // ap++
-
-            if (m < 0) {
-                m = nComponents - 1;
-            }
-
-            offset = action & lafComponentOffsetMask;
-            if (offset != 0) {
-              LEReferenceToArrayOf<le_int16> offsetTable(stHeader, success, 2 * SignExtend(offset, lafComponentOffsetMask), LE_UNBOUNDED_ARRAY);
-
-              if(LE_FAILURE(success)) {
-                  currGlyph++;
-                  LE_DEBUG_BAD_FONT("off end of ligature substitution header");
-                  return newState; // get out! bad font
-              }
-              if(componentGlyph > (le_uint32)glyphStorage.getGlyphCount()) {
-                LE_DEBUG_BAD_FONT("preposterous componentGlyph");
-                currGlyph++;
-                return newState; // get out! bad font
-              }
-              i += SWAPW(offsetTable.getObject(LE_GET_GLYPH(glyphStorage[componentGlyph]), success));
-
-                if (action & (lafLast | lafStore))  {
-                  LEReferenceTo<TTGlyphID> ligatureOffset(stHeader, success, i);
-                  TTGlyphID ligatureGlyph = SWAPW(*ligatureOffset.getAlias());
-
-                  glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], ligatureGlyph);
-                  if(mm==nComponents) {
-                    LE_DEBUG_BAD_FONT("exceeded nComponents");
-                    mm--; // don't overrun the stack.
-                  }
-                  stack[++mm] = componentGlyph;
-                  i = 0;
-                } else {
-                  glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], 0xFFFF);
-                }
-            }
-#if LE_ASSERT_BAD_FONT
-            if(m<0) {
-              LE_DEBUG_BAD_FONT("m<0")
-            }
-#endif
-        } while (!(action & lafLast)  && (m>=0) ); // stop if last bit is set, or if run out of items
-
-        while (mm >= 0) {
-          if (++m >= nComponents) {
-            m = 0;
-          }
-          
-          componentStack[m] = stack[mm--];
-        }
-    }
-
-    if (!(flags & lsfDontAdvance)) {
-        // should handle reverse too!
-        currGlyph += 1;
-    }
-
-    return newState;
-}
-
-void LigatureSubstitutionProcessor::endStateTable()
-{
-}
-
-U_NAMESPACE_END