1 files changed, 54 insertions, 0 deletions
diff --git a/base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java b/base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java
new file mode 100644
index 0000000..ee93b73
--- /dev/null
+++ b/base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java
@@ -0,0 +1,54 @@
+package bjc.utils.parserutils.delims;
+
+import java.util.function.Function;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import bjc.utils.data.IPair;
+import bjc.utils.data.Pair;
+
+/**
+ * A predicated opener for use with {@link RegexCloser}
+ *
+ * @author bjculkin
+ *
+ */
+public class RegexOpener implements Function<String, IPair<String, String[]>> {
+	private final String name;
+
+	private final Pattern patt;
+
+	/**
+	 * Create a new regex opener.
+	 *
+	 * @param groupName
+	 *                The name of the opened group.
+	 *
+	 * @param groupRegex
+	 *                The regex that matches the opener.
+	 */
+	public RegexOpener(final String groupName, final String groupRegex) {
+		name = groupName;
+
+		patt = Pattern.compile(groupRegex);
+	}
+
+	@Override
+	public IPair<String, String[]> apply(final String str) {
+		final Matcher m = patt.matcher(str);
+
+		if (m.matches()) {
+			final int numGroups = m.groupCount();
+
+			final String[] parms = new String[numGroups + 1];
+
+			for (int i = 0; i <= numGroups; i++) {
+				parms[i] = m.group(i);
+			}
+
+			return new Pair<>(name, parms);
+		}
+
+		return new Pair<>(null, null);
+	}
+}