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-rw-r--r--libjava/java/util/Properties.java391
1 files changed, 0 insertions, 391 deletions
diff --git a/libjava/java/util/Properties.java b/libjava/java/util/Properties.java
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index 2f7a25159b7..00000000000
--- a/libjava/java/util/Properties.java
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-// Properties - Property list representation.
-
-/* Copyright (C) 1998, 1999, 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. */
-
-package java.util;
-
-import java.io.BufferedWriter;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.PrintStream;
-import java.io.PrintWriter;
-import java.io.PushbackReader;
-
-/**
- * @author Tom Tromey <tromey@cygnus.com>
- * @date October 26, 1998.
- */
-
-/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
- * Status: Complete to JDK 1.2.
- */
-
-public class Properties extends Hashtable
-{
- protected Properties defaults;
-
- public String getProperty (String propName)
- {
- return getProperty (propName, null);
- }
-
- public String getProperty (String propName, String defVal)
- {
- String r = (String) get (propName);
- if (r == null)
- {
- if (defaults != null)
- r = defaults.getProperty(propName, defVal);
- else
- r = defVal;
- }
- return r;
- }
-
- public Object setProperty (String key, String value)
- {
- return put (key, value);
- }
-
- public void list (PrintStream out)
- {
- Enumeration e = propertyNames ();
- while (e.hasMoreElements())
- {
- String key = (String) e.nextElement();
- String value = getProperty(key);
- if (value != null)
- {
- if (value.length() > 40)
- {
- // JDK compatibility.
- value = value.substring(0, 37) + "...";
- }
- out.print(key);
- out.print("=");
- out.println(value);
- }
- }
- }
-
- public void list (PrintWriter writer)
- {
- Enumeration e = propertyNames ();
- while (e.hasMoreElements())
- {
- String key = (String) e.nextElement();
- String value = getProperty(key);
- if (value != null)
- {
- if (value.length() > 40)
- {
- // JDK compatibility.
- value = value.substring(0, 37) + "...";
- }
- writer.print(key);
- writer.print("=");
- writer.println(value);
- }
- }
- }
-
- private final boolean skip_ws (PushbackReader reader) throws IOException
- {
- while (true)
- {
- int c = reader.read();
- if (c == -1)
- return false;
- // FIXME: we use our own definition of whitespace.
- // Character.isWhitespace includes newlines, which we don't
- // want. Character.isSpaceChar doesn't include \t.
- if (c != ' ' && c != '\t')
- {
- reader.unread(c);
- return true;
- }
- }
- }
-
- // Note: this method needs to be rewritten for JDK 1.2.
- // We rather arbitrarily decide that an EOF in the middle of a line
- // means that the whole line should be ignored. The spec doesn't
- // specifically address this, but this interpretation seems valid.
- public synchronized void load (InputStream in) throws IOException
- {
- PushbackReader reader = new PushbackReader (new InputStreamReader (in));
-
- StringBuffer key = new StringBuffer ();
- StringBuffer value = new StringBuffer ();
-
- nextLine:
- while (true)
- {
- key.setLength(0);
- value.setLength(0);
-
- // Skip leading whitespace.
- if (! skip_ws (reader))
- return;
-
- // Read key until key terminator.
- boolean first_char = true;
- int c;
- while (true)
- {
- c = reader.read();
- if (c == -1)
- return;
- if (c == '\\')
- {
- first_char = false;
- c = reader.read();
- if (c == -1)
- return;
- }
-
- // If we found a comment, just read to end of line and
- // then keep going.
- if (first_char == true && (c == '#' || c == '!'))
- {
- while (c != -1 && c != '\r' && c != '\n')
- c = reader.read();
- if (c == -1)
- return;
- continue nextLine;
- }
-
- if (c == '\r' || c == '\n')
- {
- if (first_char)
- continue nextLine;
- reader.unread(c);
- break;
- }
- // FIXME: again, our own definition of whitespace.
- if (c == ' ' || c == '\t' || c == ':' || c == '=')
- break;
-
- first_char = false;
- key.append((char) c);
- }
-
- // Found end of key. Skip whitespace. If the terminator
- // was whitespace, also skip a single instance of a "real"
- // terminator, and then more whitespace.
- if (! skip_ws (reader))
- return;
- if (c != ':' && c != '=')
- {
- c = reader.read();
- if (c == -1)
- return;
- if (c == ':' || c == '=')
- {
- // Skip more whitespace.
- if (! skip_ws (reader))
- return;
- }
- else
- reader.unread(c);
- }
-
- // Now read the value.
- while (true)
- {
- c = reader.read();
- if (c == -1)
- return;
- if (c == '\r' || c == '\n')
- break;
- if (c == '\\')
- {
- c = reader.read();
- switch (c)
- {
- case -1:
- return;
- case 't':
- c = '\t';
- break;
- case 'r':
- c = '\r';
- break;
- case 'n':
- c = '\n';
- break;
- case 'u':
- c = 0;
- for (int i = 0; i < 4; ++i)
- {
- int x = reader.read();
- if (x == -1)
- return;
- int d = Character.digit((char) x, 16);
- // We follow JDK here: invalid characters
- // are treated as terminators.
- if (d == -1)
- {
- value.append((char) c);
- c = x;
- break;
- }
- c <<= 4;
- c |= d;
- }
- break;
- default:
- // Nothing.
- }
- }
- value.append((char) c);
- }
-
- put (key.toString(), value.toString());
- }
- }
-
- public Properties ()
- {
- defaults = null;
- }
-
- public Properties (Properties defs)
- {
- defaults = defs;
- }
-
- private final void addHashEntries (Hashtable base)
- {
- if (defaults != null)
- defaults.addHashEntries(base);
- Enumeration keys = keys ();
- while (keys.hasMoreElements())
- base.put(keys.nextElement(), base);
- }
-
- public Enumeration propertyNames ()
- {
- // We make a new Hashtable that holds all the keys. Then we
- // return an enumeration for this hash. We do this because we
- // don't want modifications to be reflected in the enumeration
- // (per JCL), and because there doesn't seem to be a
- // particularly better way to ensure that duplicates are
- // ignored.
- Hashtable t = new Hashtable ();
- addHashEntries (t);
- return t.keys();
- }
-
- public synchronized void save (OutputStream out, String comment)
- {
- try
- {
- store (out, comment);
- }
- catch (IOException _)
- {
- }
- }
-
- public synchronized void store (OutputStream out, String comment)
- throws IOException
- {
- // Use a buffer because writing a single string through
- // OutputStreamWriter is fairly expensive.
- BufferedWriter output
- = new BufferedWriter (new OutputStreamWriter (out));
- String newline = System.getProperty("line.separator");
-
- if (comment != null)
- {
- // We just lose if COMMENT contains a newline. This is
- // what JDK 1.1 does.
- output.write("#");
- output.write(comment);
- output.write(newline);
- }
- output.write("# ");
- output.write(new Date().toString());
- output.write(newline);
-
- Enumeration keys = keys ();
- while (keys.hasMoreElements())
- {
- String key = (String) keys.nextElement();
- String value = (String) get (key);
-
- // FIXME: JCL says that the key can contain many Unicode
- // characters. But it also doesn't say we should encode
- // it in any way.
- // FIXME: if key contains ':', '=', or whitespace, must
- // quote it here. Note that JDK 1.1 does not do this.
- output.write(key);
- output.write("=");
-
- boolean leading = true;
- for (int i = 0; i < value.length(); ++i)
- {
- boolean new_lead = false;
- char c = value.charAt(i);
- switch (c)
- {
- case '\n':
- output.write("\\n");
- break;
- case '\r':
- output.write("\\r");
- break;
- case '\t':
- output.write("\\t");
- break;
- case '\\':
- output.write("\\\\");
- break;
-
- case '#':
- case '!':
- case '=':
- case ':':
- output.write("\\");
- output.write(c);
- break;
-
- case ' ':
- new_lead = leading;
- if (leading)
- output.write("\\");
- output.write(c);
- break;
-
- default:
- if (c < '\u0020' || c > '\u007e')
- {
- output.write("\\u");
- output.write(Character.forDigit(c >>> 12, 16));
- output.write(Character.forDigit((c >>> 8) & 0xff,
- 16));
- output.write(Character.forDigit((c >>> 4) & 0xff,
- 16));
- output.write(Character.forDigit(c & 0xff, 16));
- }
- else
- output.write(c);
- }
- leading = new_lead;
- }
- output.write(newline);
- }
-
- output.flush();
- }
-}