Code maintenace and changes

1 files changed, 56 insertions, 0 deletions

diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcutils/TokenSplitter.java b/BJC-Utils2/src/main/java/bjc/utils/funcutils/TokenSplitter.java
new file mode 100644
index 0000000..0da9f7d
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcutils/TokenSplitter.java
@@ -0,0 +1,56 @@
+package bjc.utils.funcutils;
+
+import java.util.function.BiFunction;
+
+import bjc.utils.funcdata.FunctionalList;
+import bjc.utils.funcdata.IFunctionalList;
+
+final class TokenSplitter implements
+		BiFunction<String, String, IFunctionalList<String>> {
+	private String tokenToSplit;
+
+	public TokenSplitter(String tok) {
+		this.tokenToSplit = tok;
+	}
+
+	@Override
+	public IFunctionalList<String> apply(String operatorName,
+			String operatorRegex) {
+		if (operatorName == null) {
+			throw new NullPointerException(
+					"Operator name must not be null");
+		} else if (operatorRegex == null) {
+			throw new NullPointerException(
+					"Operator regex must not be null");
+		}
+
+		if (tokenToSplit.contains(operatorName)) {
+			if (StringUtils.containsOnly(tokenToSplit,
+					operatorRegex)) {
+				return new FunctionalList<>(tokenToSplit);
+			}
+
+			IFunctionalList<String> splitTokens = new FunctionalList<>(
+					tokenToSplit.split(operatorRegex));
+
+			IFunctionalList<String> result = new FunctionalList<>();
+
+			int tokenExpansionSize = splitTokens.getSize();
+
+			splitTokens.forEachIndexed((tokenIndex, token) -> {
+
+				if (tokenIndex != tokenExpansionSize
+						&& tokenIndex != 0) {
+					result.add(operatorName);
+					result.add(token);
+				} else {
+					result.add(token);
+				}
+			});
+
+			return result;
+		}
+
+		return new FunctionalList<>(tokenToSplit);
+	}
+}
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