encodings.pl: New file.

	* scripts/encodings.pl: New file.
	* Makefile.in: Rebuilt.
	* Makefile.am (convert_source_files): Added IOConverter.java.
	* gnu/gcj/convert/UnicodeToBytes.java (UnicodeToBytes): Extend
	IOConverter.
	(getDefaultDecodingClass): Canonicalize default encoding name.
	(getEncoder): Likewise.
	* gnu/gcj/convert/BytesToUnicode.java (BytesToUnicode): Extend
	IOConverter.
	(getDefaultDecodingClass): Canonicalize default encoding name.
	(getDecoder): Likewise.
	* gnu/gcj/convert/IOConverter.java: New file.

From-SVN: r35432

3 files changed, 62 insertions, 6 deletions

diff --git a/libjava/gnu/gcj/convert/BytesToUnicode.java b/libjava/gnu/gcj/convert/BytesToUnicode.java
index 92836e0..d80ed65 100644
--- a/libjava/gnu/gcj/convert/BytesToUnicode.java
+++ b/libjava/gnu/gcj/convert/BytesToUnicode.java
@@ -8,7 +8,7 @@ details.  */
 
 package gnu.gcj.convert;
 
-public abstract class BytesToUnicode
+public abstract class BytesToUnicode extends IOConverter
 {
   /** Buffer to read bytes from.
    * The characters inbuffer[inpos] ... inbuffer[inlength-1] are available. */
@@ -25,7 +25,7 @@ public abstract class BytesToUnicode
     // Test (defaultDecodingClass == null) again in case of race condition.
     if (defaultDecodingClass == null)
       {
-	String encoding = System.getProperty("file.encoding");
+	String encoding = canonicalize (System.getProperty("file.encoding"));
 	String className = "gnu.gcj.convert.Input_"+encoding;
 	try
 	  {
@@ -60,7 +60,7 @@ public abstract class BytesToUnicode
   public static BytesToUnicode getDecoder (String encoding)
     throws java.io.UnsupportedEncodingException
   {
-    String className = "gnu.gcj.convert.Input_"+encoding;
+    String className = "gnu.gcj.convert.Input_" + canonicalize (encoding);
     Class decodingClass;
     try 
       { 
@@ -71,6 +71,8 @@ public abstract class BytesToUnicode
       { 
 	try
 	  {
+	    // We pass the original name to iconv and let it handle
+	    // its own aliasing.
 	    return new Input_iconv (encoding);
 	  }
 	catch (Throwable _)
diff --git a/libjava/gnu/gcj/convert/IOConverter.java b/libjava/gnu/gcj/convert/IOConverter.java
new file mode 100644
index 0000000..c986624
--- /dev/null
+++ b/libjava/gnu/gcj/convert/IOConverter.java
@@ -0,0 +1,52 @@
+/* Copyright (C) 2000  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+/* This is a base class that handles aliasing issues for
+   UnicodeToBytes to BytesToUnicode.  */
+
+package gnu.gcj.convert;
+
+import java.util.Hashtable;
+
+public abstract class IOConverter
+{
+  // Map encoding aliases to our canonical form.
+  static private Hashtable hash = new Hashtable ();
+
+  static
+  {
+    // Manually maintained aliases.  Note that the value must be our
+    // canonical name.
+    hash.put ("ISO-Latin-1", "8859_1");
+    // All aliases after this point are automatically generated by the
+    // `encodings.pl' script.  Run it to make any corrections.
+    hash.put ("ISO_8859-1:1987", "8859_1");
+    hash.put ("iso-ir-100", "8859_1");
+    hash.put ("ISO_8859-1", "8859_1");
+    hash.put ("ISO-8859-1", "8859_1");
+    hash.put ("latin1", "8859_1");
+    hash.put ("l1", "8859_1");
+    hash.put ("IBM819", "8859_1");
+    hash.put ("CP819", "8859_1");
+    hash.put ("csISOLatin1", "8859_1");
+    hash.put ("UTF-8", "UTF8");
+    hash.put ("Shift_JIS", "SJIS");
+    hash.put ("MS_Kanji", "SJIS");
+    hash.put ("csShiftJIS", "SJIS");
+    hash.put ("Extended_UNIX_Code_Packed_Format_for_Japanese", "EUCJIS");
+    hash.put ("csEUCPkdFmtJapanese", "EUCJIS");
+    hash.put ("EUC-JP", "EUCJIS");
+  }
+
+  // Turn an alias into the canonical form.
+  protected static final String canonicalize (String name)
+  {
+    String c = (String) hash.get (name);
+    return c == null ? name : c;
+  }
+}
diff --git a/libjava/gnu/gcj/convert/UnicodeToBytes.java b/libjava/gnu/gcj/convert/UnicodeToBytes.java
index d068fce..1ba6ddf 100644
--- a/libjava/gnu/gcj/convert/UnicodeToBytes.java
+++ b/libjava/gnu/gcj/convert/UnicodeToBytes.java
@@ -8,7 +8,7 @@ details.  */
 
 package gnu.gcj.convert; 
  
-public abstract class UnicodeToBytes
+public abstract class UnicodeToBytes extends IOConverter
 {
   /** Buffer to emit bytes to.
    * The locations buf[count] ... buf[buf.length-1] are available. */
@@ -22,7 +22,7 @@ public abstract class UnicodeToBytes
     // Test (defaultEncodingClass == null) again in case of race condition.
     if (defaultEncodingClass == null)
       {
-	String encoding = System.getProperty("file.encoding");
+	String encoding = canonicalize (System.getProperty("file.encoding"));
 	String className = "gnu.gcj.convert.Output_"+encoding;
 	try
 	  {
@@ -58,7 +58,7 @@ public abstract class UnicodeToBytes
   public static UnicodeToBytes getEncoder (String encoding)
     throws java.io.UnsupportedEncodingException
   {
-    String className = "gnu.gcj.convert.Output_"+encoding;
+    String className = "gnu.gcj.convert.Output_" + canonicalize (encoding);
     Class encodingClass;
     try 
       { 
@@ -69,6 +69,8 @@ public abstract class UnicodeToBytes
       { 
 	try
 	  {
+	    // We pass the original name to iconv and let it handle
+	    // its own aliasing.
 	    return new Output_iconv (encoding);
 	  }
 	catch (Throwable _)