1 files changed, 47 insertions, 0 deletions

diff --git a/scintilla/src/CaseConvert.h b/scintilla/src/CaseConvert.h
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+// Scintilla source code edit control
+// Encoding: UTF-8
+/** @file CaseConvert.h
+ ** Performs Unicode case conversions.
+ ** Does not handle locale-sensitive case conversion.
+ **/
+// Copyright 2013 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#ifndef CASECONVERT_H
+#define CASECONVERT_H
+
+#ifdef SCI_NAMESPACE
+namespace Scintilla {
+#endif
+
+enum CaseConversion {
+	CaseConversionFold,
+	CaseConversionUpper,
+	CaseConversionLower
+};
+
+class ICaseConverter {
+public:
+	virtual size_t CaseConvertString(char *converted, size_t sizeConverted, const char *mixed, size_t lenMixed) = 0;
+};
+
+ICaseConverter *ConverterFor(enum CaseConversion conversion);
+
+// Returns a UTF-8 string. Empty when no conversion
+const char *CaseConvert(int character, enum CaseConversion conversion);
+
+// When performing CaseConvertString, the converted value may be up to 3 times longer than the input.
+// Ligatures are often decomposed into multiple characters and long cases include:
+// ΐ "\xce\x90" folds to ΐ "\xce\xb9\xcc\x88\xcc\x81"
+const int maxExpansionCaseConversion=3;
+
+// Converts a mixed case string using a particular conversion.
+// Result may be a different length to input and the length is the return value.
+// If there is not enough space then 0 is returned.
+size_t CaseConvertString(char *converted, size_t sizeConverted, const char *mixed, size_t lenMixed, enum CaseConversion conversion);
+
+#ifdef SCI_NAMESPACE
+}
+#endif
+
+#endif