Add tokenizer, parser and support for certain operations

1 files changed, 56 insertions, 0 deletions

diff --git a/main/core/CommandLineArgumentContainer.java b/main/core/CommandLineArgumentContainer.java
new file mode 100644
index 0000000..9ca0b5e
--- /dev/null
+++ b/main/core/CommandLineArgumentContainer.java
@@ -0,0 +1,56 @@
+package com.jantuomi.interpreter.main.core;
+
+import org.kohsuke.args4j.Option;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+
+/**
+ * Created by jan on 10.6.2016.
+ */
+
+public class CommandLineArgumentContainer {
+
+    private CommandLineArgumentContainer() {}
+
+    private static final CommandLineArgumentContainer instance = new CommandLineArgumentContainer();
+    private File srcFile;
+
+    @Option(name="-f", usage="Execute script in file FILE.")
+    public void setFile(File file) {
+        this.srcFile = file;
+    }
+
+    public static CommandLineArgumentContainer getInstance() {
+        return instance;
+    }
+
+    public String getSourceFileContents() {
+        if (srcFile == null) {
+            return null;
+        }
+
+        BufferedReader br;
+        String contents = null;
+        try {
+            br = new BufferedReader(new FileReader(srcFile));
+            StringBuilder sb = new StringBuilder();
+            String line = br.readLine();
+
+            while (line != null) {
+                sb.append(line);
+                sb.append(System.lineSeparator());
+                line = br.readLine();
+            }
+            contents = sb.toString();
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        } finally {
+            // Add a newline at the end for comment rows to terminate nicely
+            return contents + "\n";
+        }
+    }
+}