first commit

Version 3.x.x

third-party/scintilla/CharClassify.cxx

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