From c82e3b3b2de0633317ec8fc85925e91422820597 Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Sun, 8 Oct 2017 22:39:59 -0300
Subject: Start splitting into maven modules

---
 .../components/ComponentDescriptionFileParser.java | 65 ++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 base/src/main/java/bjc/utils/components/ComponentDescriptionFileParser.java

(limited to 'base/src/main/java/bjc/utils/components/ComponentDescriptionFileParser.java')

diff --git a/base/src/main/java/bjc/utils/components/ComponentDescriptionFileParser.java b/base/src/main/java/bjc/utils/components/ComponentDescriptionFileParser.java
new file mode 100644
index 0000000..f7ddaff
--- /dev/null
+++ b/base/src/main/java/bjc/utils/components/ComponentDescriptionFileParser.java
@@ -0,0 +1,65 @@
+package bjc.utils.components;
+
+import static bjc.utils.ioutils.RuleBasedReaderPragmas.buildInteger;
+import static bjc.utils.ioutils.RuleBasedReaderPragmas.buildStringCollapser;
+
+import java.io.InputStream;
+
+import bjc.utils.ioutils.RuleBasedConfigReader;
+
+/**
+ * Read a component description from a file
+ *
+ * @author ben
+ *
+ */
+public class ComponentDescriptionFileParser {
+	// The reader used to read in component descriptions
+	private static RuleBasedConfigReader<ComponentDescriptionState> reader;
+
+	// Initialize the reader and its pragmas
+	static {
+		// This reader works entirely off of pragmas, so no need to
+		// handle
+		// rules
+		reader = new RuleBasedConfigReader<>((tokenizer, statePair) -> {
+			// Don't need to do anything on rule start
+		}, (tokenizer, state) -> {
+			// Don't need to do anything on rule continuation
+		}, (state) -> {
+			// Don't need to do anything on rule end
+		});
+
+		setupReaderPragmas();
+	}
+
+	/**
+	 * Parse a component description from a stream
+	 *
+	 * @param inputSource
+	 *                The stream to parse from
+	 * @return The description parsed from the stream
+	 */
+	public static ComponentDescription fromStream(final InputStream inputSource) {
+		if (inputSource == null) throw new NullPointerException("Input source must not be null");
+
+		final ComponentDescriptionState readState = reader.fromStream(inputSource,
+				new ComponentDescriptionState());
+
+		return readState.toDescription();
+	}
+
+	/*
+	 * Create all the pragmas the reader needs to function
+	 */
+	private static void setupReaderPragmas() {
+		reader.addPragma("name", buildStringCollapser("name", (name, state) -> state.setName(name)));
+
+		reader.addPragma("author", buildStringCollapser("author", (author, state) -> state.setAuthor(author)));
+
+		reader.addPragma("description", buildStringCollapser("description",
+				(description, state) -> state.setDescription(description)));
+
+		reader.addPragma("version", buildInteger("version", (version, state) -> state.setVersion(version)));
+	}
+}
-- 
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