New splitter implementation

1 files changed, 124 insertions, 0 deletions

diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/splitterv2/ConfigurableTokenSplitter.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/splitterv2/ConfigurableTokenSplitter.java
new file mode 100644
index 0000000..021821a
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/parserutils/splitterv2/ConfigurableTokenSplitter.java
@@ -0,0 +1,124 @@
+package bjc.utils.parserutils.splitterv2;
+
+import bjc.utils.funcdata.IList;
+
+import java.util.LinkedHashSet;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+import static bjc.utils.PropertyDB.applyFormat;
+
+/**
+ * Split a string into pieces around a regular expression, and offer an easy way
+ * to configure the regular expression.
+ * 
+ * @author EVE
+ *
+ */
+public class ConfigurableTokenSplitter extends SimpleTokenSplitter {
+	private Set<String>	simpleDelimiters;
+	private Set<String>	multipleDelimiters;
+	private Set<String>	rRawDelimiters;
+
+	/**
+	 * Create a new token splitter with blank configuration.
+	 * 
+	 * @param keepDelims
+	 *                Whether or not to keep delimiters.
+	 */
+	public ConfigurableTokenSplitter(boolean keepDelims) {
+		super(null, keepDelims);
+
+		/*
+		 * Use linked hash-sets to keep items in insertion order.
+		 */
+		simpleDelimiters = new LinkedHashSet<>();
+		multipleDelimiters = new LinkedHashSet<>();
+		rRawDelimiters = new LinkedHashSet<>();
+	}
+
+	/**
+	 * Add a set of simple delimiters to this splitter.
+	 * 
+	 * Simple delimiters match one occurrence of themselves as literals.
+	 * 
+	 * @param simpleDelims
+	 *                The simple delimiters to add.
+	 */
+	public void addSimpleDelimiters(String... simpleDelims) {
+		for(String simpleDelim : simpleDelims) {
+			simpleDelimiters.add(simpleDelim);
+		}
+	}
+
+	/**
+	 * Add a set of multiple delimiters to this splitter.
+	 * 
+	 * Multiple delimiters match one or more occurrences of themselves as
+	 * literals.
+	 * 
+	 * @param multiDelims
+	 *                The multiple delimiters to add.
+	 */
+	public void addMultiDelimiters(String... multiDelims) {
+		for(String multiDelim : multiDelims) {
+			multipleDelimiters.add(multiDelim);
+		}
+	}
+
+	/**
+	 * Add a set of raw delimiters to this splitter.
+	 * 
+	 * Raw delimiters match one occurrence of themselves as regular
+	 * expressions.
+	 * 
+	 * @param rRawDelims
+	 *                The raw delimiters to add.
+	 */
+	public void addRawDelimiters(String... rRawDelims) {
+		for(String rRawDelim : rRawDelims) {
+			rRawDelimiters.add(rRawDelim);
+		}
+	}
+
+	/**
+	 * Take the configuration and compile it into a regular expression to
+	 * use when splitting.
+	 */
+	public void compile() {
+		StringBuilder rPattern = new StringBuilder();
+
+		for(String rRawDelimiter : rRawDelimiters) {
+			rPattern.append(applyFormat("rawDelim", rRawDelimiter));
+		}
+
+		for(String multipleDelimiter : multipleDelimiters) {
+			rPattern.append(applyFormat("multipleDelim", multipleDelimiter));
+		}
+
+		for(String simpleDelimiter : simpleDelimiters) {
+			rPattern.append(applyFormat("simpleDelim", simpleDelimiter));
+		}
+
+		rPattern.deleteCharAt(rPattern.length() - 1);
+
+		spliter = Pattern.compile(rPattern.toString());
+	}
+
+	@Override
+	public IList<String> split(String input) {
+		if(spliter == null) {
+			throw new IllegalStateException("Must compile splitter before use");
+		}
+
+		return super.split(input);
+	}
+
+	@Override
+	public String toString() {
+		String fmt = "ConfigurableTokenSplitter [simpleDelimiters=%s, multipleDelimiters=%s,"
+				+ " rRawDelimiters=%s, spliter=%s]";
+
+		return String.format(fmt, simpleDelimiters, multipleDelimiters, rRawDelimiters, spliter);
+	}
+}