62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
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// Scintilla source code edit control
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/** @file CharClassify.cxx
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** Character classifications used by Document and RESearch.
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**/
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// Copyright 2006 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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#include "CharClassify.h"
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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// Shut up annoying Visual C++ warnings:
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#ifdef _MSC_VER
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#pragma warning(disable: 4514)
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#endif
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CharClassify::CharClassify() {
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SetDefaultCharClasses(true);
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}
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void CharClassify::SetDefaultCharClasses(bool includeWordClass) {
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// Initialize all char classes to default values
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for (int ch = 0; ch < 256; ch++) {
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if (ch == '\r' || ch == '\n')
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charClass[ch] = ccNewLine;
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else if (ch < 0x20 || ch == ' ')
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charClass[ch] = ccSpace;
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else if (includeWordClass && (ch >= 0x80 || isalnum(ch) || ch == '_'))
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charClass[ch] = ccWord;
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else
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charClass[ch] = ccPunctuation;
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}
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}
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void CharClassify::SetCharClasses(const unsigned char *chars, cc newCharClass) {
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// Apply the newCharClass to the specifed chars
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if (chars) {
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while (*chars) {
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charClass[*chars] = static_cast<unsigned char>(newCharClass);
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chars++;
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}
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}
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}
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int CharClassify::GetCharsOfClass(cc characterClass, unsigned char *buffer) {
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// Get characters belonging to the given char class; return the number
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// of characters (if the buffer is NULL, don't write to it).
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int count = 0;
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for (int ch = maxChar - 1; ch >= 0; --ch) {
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if (charClass[ch] == characterClass) {
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++count;
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if (buffer) {
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*buffer = static_cast<unsigned char>(ch);
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buffer++;
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}
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}
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}
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return count;
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}
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