summaryrefslogtreecommitdiff
path: root/i18nutil/source/utility/casefolding.cxx
diff options
context:
space:
mode:
Diffstat (limited to 'i18nutil/source/utility/casefolding.cxx')
-rw-r--r--i18nutil/source/utility/casefolding.cxx167
1 files changed, 167 insertions, 0 deletions
diff --git a/i18nutil/source/utility/casefolding.cxx b/i18nutil/source/utility/casefolding.cxx
new file mode 100644
index 000000000000..8563a44798f0
--- /dev/null
+++ b/i18nutil/source/utility/casefolding.cxx
@@ -0,0 +1,167 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#include "i18nutil/casefolding.hxx"
+#include "casefolding_data.h"
+#include "i18nutil/widthfolding.hxx"
+
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+
+namespace com { namespace sun { namespace star { namespace i18n {
+
+static Mapping mapping_03a3[] = {{0, 1, {0x03c2, 0, 0}},{0, 1, {0x03c3, 0, 0}}};
+static Mapping mapping_0307[] = {{0, 0, {0, 0, 0}},{0, 1, {0x0307, 0, 0}}};
+static Mapping mapping_004a[] = {{0, 2, {0x006a, 0x0307, 0}},{0, 1, {0x006a, 0, 0}}};
+static Mapping mapping_012e[] = {{0, 2, {0x012f, 0x0307, 0}},{0, 1, {0x012f, 0, 0}}};
+static Mapping mapping_00cc[] = {{0, 3, {0x0069, 0x0307, 0x0300}},{0, 1, {0x00ec, 0, 0}}};
+static Mapping mapping_00cd[] = {{0, 3, {0x0069, 0x0307, 0x0301}},{0, 1, {0x00ed, 0, 0}}};
+static Mapping mapping_0128[] = {{0, 3, {0x0069, 0x0307, 0x0303}},{0, 1, {0x0129, 0, 0}}};
+static Mapping mapping_0049[] = {{0, 2, {0x0069, 0x0307, 0}},{0, 1, {0x0131, 0, 0}},{0, 1, {0x0069, 0, 0}}};
+static Mapping mapping_0069[] = {{0, 1, {0x0130, 0, 0}},{0, 1, {0x0049, 0, 0}}};
+static Mapping mapping_0130[] = {{0, 1, {0x0069, 0, 0}},{0, 1, {0x0130, 0, 0}}};
+
+#define langIs(lang) (aLocale.Language.compareToAscii(lang) == 0)
+
+// only check simple case, there is more complicated case need to be checked.
+#define type_i(ch) ((ch) == 0x0069 || (ch) == 0x006a)
+
+#define cased_letter(ch) (CaseMappingIndex[(ch)>>8] >= 0 && (CaseMappingValue[(CaseMappingIndex[(ch)>>8] << 8) + ((ch)&0xff)].type & CasedLetter))
+
+// for Lithuanian, condition to make explicit dot above when lowercasing capital I's and J's
+// whenever there are more accents above.
+#define accent_above(ch) (((ch) >= 0x0300 && (ch) <= 0x0314) || ((ch) >= 0x033D && (ch) <= 0x0344) || (ch) == 0x0346 || ((ch) >= 0x034A && (ch) <= 0x034C))
+
+Mapping& casefolding::getConditionalValue(const sal_Unicode* str, sal_Int32 pos, sal_Int32 len, Locale& aLocale, sal_uInt8 nMappingType) throw (RuntimeException)
+{
+ switch(str[pos]) {
+ case 0x03a3:
+ // final_sigma (not followed by cased and preceded by cased character)
+ // DOES NOT check ignorable sequence yet (more complicated implementation).
+ return !(pos < len && cased_letter(str[pos+1])) && (pos > 0 && cased_letter(str[pos-1])) ?
+ mapping_03a3[0] : mapping_03a3[1];
+ case 0x0307:
+ return (((nMappingType == MappingTypeLowerToUpper && langIs("lt")) ||
+ (nMappingType == MappingTypeUpperToLower && (langIs("tr") || langIs("az")))) &&
+ (pos > 0 && type_i(str[pos-1]))) ? // after_i
+ mapping_0307[0] : mapping_0307[1];
+ case 0x0130:
+ return (langIs("tr") || langIs("az")) ? mapping_0130[0] : mapping_0130[1];
+ case 0x0069:
+ return (langIs("tr") || langIs("az")) ? mapping_0069[0] : mapping_0069[1];
+ case 0x0049: return langIs("lt") && pos > len && accent_above(str[pos+1]) ? mapping_0049[0] :
+ (langIs("tr") || langIs("az")) ? mapping_0049[1] : mapping_0049[2];
+ case 0x004a: return langIs("lt") && pos > len && accent_above(str[pos+1]) ? mapping_004a[0] : mapping_004a[1];
+ case 0x012e: return langIs("lt") && pos > len && accent_above(str[pos+1]) ? mapping_012e[0] : mapping_012e[1];
+ case 0x00cc: return langIs("lt") ? mapping_00cc[0] : mapping_00cc[1];
+ case 0x00cd: return langIs("lt") ? mapping_00cd[0] : mapping_00cd[1];
+ case 0x0128: return langIs("lt") ? mapping_0128[0] : mapping_0128[1];
+ }
+ // Should not come here
+ throw RuntimeException();
+}
+
+Mapping& casefolding::getValue(const sal_Unicode* str, sal_Int32 pos, sal_Int32 len, Locale& aLocale, sal_uInt8 nMappingType) throw (RuntimeException)
+{
+ static Mapping dummy = { 0, 1, { 0, 0, 0 } };
+ sal_Int16 address = CaseMappingIndex[str[pos] >> 8] << 8;
+
+ dummy.map[0] = str[pos];
+
+ if (address >= 0 && (CaseMappingValue[address += (str[pos] & 0xFF)].type & nMappingType)) {
+ sal_uInt8 type = CaseMappingValue[address].type;
+ if (type & ValueTypeNotValue) {
+ if (CaseMappingValue[address].value == 0)
+ return getConditionalValue(str, pos, len, aLocale, nMappingType);
+ else {
+ for (int map = CaseMappingValue[address].value;
+ map < CaseMappingValue[address].value + MaxCaseMappingExtras; map++) {
+ if (CaseMappingExtra[map].type & nMappingType) {
+ if (CaseMappingExtra[map].type & ValueTypeNotValue)
+ return getConditionalValue(str, pos, len, aLocale, nMappingType);
+ else
+ return CaseMappingExtra[map];
+ }
+ }
+ // Should not come here
+ throw RuntimeException();
+ }
+ } else
+ dummy.map[0] = CaseMappingValue[address].value;
+ }
+ return dummy;
+}
+
+inline sal_Bool SAL_CALL
+is_ja_voice_sound_mark(sal_Unicode& current, sal_Unicode next)
+{
+ sal_Unicode c = 0;
+
+ if ((next == 0x3099 || next == 0x309a) && ( (c = widthfolding::getCompositionChar(current, next)) != 0 ))
+ current = c;
+ return c != 0;
+}
+
+sal_Unicode casefolding::getNextChar(const sal_Unicode *str, sal_Int32& idx, sal_Int32 len, MappingElement& e, Locale& aLocale, sal_uInt8 nMappingType, TransliterationModules moduleLoaded) throw (RuntimeException)
+{
+ if( idx >= len )
+ {
+ e = MappingElement();
+ return 0;
+ }
+
+ sal_Unicode c;
+
+ if (moduleLoaded & TransliterationModules_IGNORE_CASE) {
+ if( e.current >= e.element.nmap ) {
+ e.element = getValue(str, idx++, len, aLocale, nMappingType);
+ e.current = 0;
+ }
+ c = e.element.map[e.current++];
+ } else {
+ c = *(str + idx++);
+ }
+
+ if (moduleLoaded & TransliterationModules_IGNORE_KANA) {
+ if ((0x3040 <= c && c <= 0x3094) || (0x309d <= c && c <= 0x309f))
+ c += 0x60;
+ }
+
+ // composition: KA + voice-mark --> GA. see halfwidthToFullwidth.cxx for detail
+ if (moduleLoaded & TransliterationModules_IGNORE_WIDTH) {
+ static oneToOneMapping& half2fullTable = widthfolding::gethalf2fullTable();
+ c = half2fullTable[c];
+ if (0x3040 <= c && c <= 0x30ff && idx < len &&
+ is_ja_voice_sound_mark(c, half2fullTable[*(str + idx)]))
+ idx++;
+ }
+
+ return c;
+}
+
+} } } }
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-22 06:47:58 +0000