org.sfm.reflect.meta.PropertyNameMatcher Maven / Gradle / Ivy

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package org.sfm.reflect.meta;

public class PropertyNameMatcher {
	private final String column;
	private final int from;

	public PropertyNameMatcher(final String column) {
		this(column, 0);
	}

	public PropertyNameMatcher(final String column, final int from) {
		this.column = column;
		this.from = from;
	}

	public String getColumn() {
		return column;
	}

	public int getFrom() {
		return from;
	}

	public boolean matches(final String property) {
		return _partialMatch(property) == column.length();
	}

	private int _partialMatch(final String property) {
		int indexColumn = from;
		int indexProperty = 0;

		do {
			if (indexProperty < property.length()) {
				char charProperty = property.charAt(indexProperty);
				
				if (indexColumn < column.length()) {
					char charColumn = column.charAt(indexColumn);
					indexColumn ++;
					
					if (charColumn == '_') {
						if (charProperty == '_') {
							indexProperty++;
						}
					} else if (Character.toLowerCase(charProperty) != Character.toLowerCase(charColumn)) {
						return -1;
					} else {
						indexProperty++;
					}
				} else {
					return -1;
				}
			} else {
				// partial match
				return indexColumn;
			}
		}
		while(true);
	}
	
	public PropertyNameMatcher partialMatch(final String property) {
		int index = _partialMatch(property);
		if (index != -1) {
			return new PropertyNameMatcher(column, index);
		} else {
			return null;
		}
	}

	public String getMatchingName() {
		return column.substring(from);
	}
	
}