1 files changed, 172 insertions, 0 deletions
diff --git a/src/main/java/io/devnulllabs/openjava/mop/MetaInfo.java b/src/main/java/io/devnulllabs/openjava/mop/MetaInfo.java
new file mode 100644
index 0000000..863b400
--- /dev/null
+++ b/src/main/java/io/devnulllabs/openjava/mop/MetaInfo.java
@@ -0,0 +1,172 @@
+/*
+ * MetaInfo.java
+ *
+ * comments here.
+ *
+ * @author   Michiaki Tatsubori
+ * @version  %VERSION% %DATE%
+ * @see      java.lang.Object
+ *
+ * COPYRIGHT 1999 by Michiaki Tatsubori, ALL RIGHTS RESERVED.
+ */
+package io.devnulllabs.openjava.mop;
+
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.Writer;
+import java.lang.reflect.Field;
+import java.util.Enumeration;
+import java.util.Hashtable;
+import java.util.StringTokenizer;
+
+
+/**
+ * The class <code>MetaInfo</code>
+ * <p>
+ * For example
+ * <pre>
+ * </pre>
+ * <p>
+ *
+ * @author   Michiaki Tatsubori
+ * @version  1.0
+ * @since    $Id: MetaInfo.java,v 1.2 2003/02/19 02:55:01 tatsubori Exp $
+ * @see java.lang.Object
+ */
+public final class MetaInfo
+{
+
+    public static final String METACLASS_KEY = "instantiates";
+    public static final String DEFAULT_METACLASS = "openjava.mop.OJClass";
+    public static final String SUFFIX = "OJMI";
+    public static final String FIELD_NAME = "dict";
+
+    private Hashtable    table = new Hashtable();
+    private String    packname;
+    private String    simpleclassname;
+
+    public MetaInfo( String metaclassname, String classname ) {
+    table.put( METACLASS_KEY, metaclassname );
+    this.simpleclassname = Environment.toSimpleName( classname );
+    this.packname = Environment.toPackageName( classname );
+    }
+
+    public MetaInfo(String classname) {
+    this(defaultMetaclass(classname), classname);
+    }
+
+    static String defaultMetaclass(String classname) {
+        Class mc = OJSystem.getMetabind(classname);
+        if (mc != null)  return mc.getName();
+    return DEFAULT_METACLASS;
+    }
+
+    private String qualifiedClassName() {
+    if (packname == null || packname.equals( "" ))  return simpleclassname;
+        return packname + "." + simpleclassname;
+    }
+
+    public MetaInfo( Class clazz ) {
+        this( clazz.getName() );
+    String minfoname = clazz.getName() + SUFFIX;
+    try {
+        Class minfo = Class.forName( minfoname );
+        Field f = minfo.getField( FIELD_NAME );
+        String[][] dict = (String[][]) f.get( null );
+        for (int i = 0; i < dict.length; ++i) {
+        table.put( dict[i][0], dict[i][1] );
+        }
+    } catch ( ClassNotFoundException e ) {
+        table.put(METACLASS_KEY, defaultMetaclass(clazz.getName()));
+    } catch ( Exception e ) {
+        System.err.println( "meta information class " + minfoname  +
+                    " has an illegal structure. : " + e );
+        table.put(METACLASS_KEY, defaultMetaclass(clazz.getName()));
+    }
+    }
+
+    public void write( Writer destout ) throws IOException {
+    PrintWriter out = new PrintWriter( destout );
+    out.println( "/*this file is generated by OpenJava system.*/" );
+    out.println( makePack() );
+    out.println( "public final class " + simpleclassname + SUFFIX );
+    out.println( "{" );
+    out.println( "public static final String[][] " + FIELD_NAME + "={" );
+
+    Enumeration key_i = keys();
+    Enumeration value_i = elements();
+    if (key_i.hasMoreElements()) {
+        out.print( " " );
+        printSet( out, key_i.nextElement(), value_i.nextElement() );
+    }
+    while (key_i.hasMoreElements()) {
+        out.print( "," );
+        printSet( out, key_i.nextElement(), value_i.nextElement() );
+    }
+
+    out.println( "};" );
+    out.println( "}" );
+
+    out.flush();
+    }
+
+    private String makePack() {
+    if (packname == null || packname.equals( "" ))  return "";
+    return "package " + packname + ";";
+    }
+
+    private void printSet( PrintWriter out, Object keyobj, Object valueobj ) {
+        String key = (String) keyobj, value = (String) valueobj;
+        out.print( "{\"" );
+    out.print( toFlattenString( key ) );
+    out.print( "\",\"" );
+    out.print( toFlattenString( value ) );
+    out.println( "\"}" );
+    }
+
+    public String put( String key, String value ) {
+    return (String) table.put( key, value );
+    }
+
+    public String get( String key ) {
+    return (String) table.get( key );
+    }
+
+    public Enumeration keys() {
+    return table.keys();
+    }
+
+    public Enumeration elements() {
+    return table.elements();
+    }
+
+    public static String toFlattenString( String src_str )  {
+    StringBuffer result = null;
+
+    /* cancel double quotes and back slashs */
+    StringTokenizer canceller
+        = new StringTokenizer( src_str, "\\\"", true );
+    result = new StringBuffer();
+
+    while (canceller.hasMoreTokens()) {
+        String buf = canceller.nextToken();
+        if(buf.equals( "\\" ) || buf.equals( "\"" )){
+        result.append( "\\" );
+        }
+        result.append( buf );
+    }
+
+    /* remove new line chars */
+    StringTokenizer lnremover
+        = new StringTokenizer( result.toString(), "\n\r", false );
+    result = new StringBuffer();
+
+    while (lnremover.hasMoreTokens()) {
+        result.append( " " + lnremover.nextToken() );
+    }
+
+    return result.toString().trim();
+    }
+
+}