#include "piqt_highlighter.h"


ConfigHighlighter::ConfigHighlighter(QTextDocument * parent): QSyntaxHighlighter(parent) {
	HighlightingRule rule;

	valueNameFormat.setForeground(QColor(0, 64, 154));
	rule.pattern = QRegExp("[^=]"); //"\\b[A-Za-z0-9_]+(?=\\()");
	rule.format = valueNameFormat;
	highlightingRules.append(rule);

	valueFormat.setForeground(QColor(192, 0, 0));
	rule.pattern = QRegExp("=[^\n]*");
	rule.format = valueFormat;
	highlightingRules.append(rule);

	equalFormat.setFontWeight(QFont::Bold);
	equalFormat.setForeground(QColor(96, 126, 0));
	rule.pattern = QRegExp("=");
	rule.format = equalFormat;
	highlightingRules.append(rule);

	sectionFormat.setFontWeight(QFont::Bold);
	sectionFormat.setForeground(QColor(0, 32, 64));
	rule.pattern = QRegExp("\\[.*\\]");
	rule.format = sectionFormat;
	highlightingRules.append(rule);

	//substFormat.setFontWeight(QFont::Bold);
	substFormat.setForeground(QColor(192, 0, 192));
	rule.pattern = QRegExp("\\$\\{.*\\}+");
	rule.pattern.setMinimal(true);
	rule.format = substFormat;
	highlightingRules.append(rule);
	rule.pattern = QRegExp("\\$\\{[^\\{]*\\}+");
	highlightingRules.append(rule);

	singleLineCommentFormat.setFontItalic(true);
	singleLineCommentFormat.setForeground(QColor(128, 128, 128));
	rule.pattern = QRegExp("#[^\n]*");
	rule.format = singleLineCommentFormat;
	highlightingRules.append(rule);

	spaceFormat.setForeground(QColor(210, 210, 210));
	
	//commentStartExpression = QRegExp("/\\*");
	//commentEndExpression = QRegExp("\\*/");
}


void ConfigHighlighter::highlightBlock(const QString & text) {
	foreach (const HighlightingRule &rule, highlightingRules) {
		QRegExp expression(rule.pattern);
		int index = expression.indexIn(text);
		while (index >= 0) {
			int length = expression.matchedLength();
			setFormat(index, length, rule.format);
			index = expression.indexIn(text, index + length);
		}
	}
	setCurrentBlockState(0);
	
	QRegExp expression = QRegExp("[ |\t]");
	int index = expression.indexIn(text);
	while (index >= 0) {
		int length = expression.matchedLength();
		setFormat(index, length, spaceFormat);
		index = expression.indexIn(text, index + length);
	}
}