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