+++ /dev/null
-/* java.util.Properties
- Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.util;
-import java.io.*;
-
-/**
- * An example of a properties file for the german language is given
- * here. This extends the example given in ListResourceBundle.
- * Create a file MyResource_de.properties with the following contents
- * and put it in the CLASSPATH. (The character
- * <code>\</code><code>u00e4</code> is the german ä)
- *
- * <pre>
- * s1=3
- * s2=MeineDisk
- * s3=3. M\<code></code>u00e4rz 96
- * s4=Die Diskette ''{1}'' enth\<code></code>u00e4lt {0} in {2}.
- * s5=0
- * s6=keine Dateien
- * s7=1
- * s8=eine Datei
- * s9=2
- * s10={0,number} Dateien
- * s11=Das Formatieren schlug fehl mit folgender Exception: {0}
- * s12=FEHLER
- * s13=Ergebnis
- * s14=Dialog
- * s15=Auswahlkriterium
- * s16=1,3
- * </pre>
- *
- * Although this is a sub class of a hash table, you should never
- * insert anything other than strings to this property, or several
- * methods, that need string keys and values, will fail. To ensure
- * this, you should use the <code>get/setProperty</code> method instead
- * of <code>get/put</code>.
- *
- * @see PropertyResourceBundle
- * @author Jochen Hoenicke
- */
-public class Properties extends Hashtable
-{
- /**
- * The property list that contains default values for any keys not
- * in this property list.
- */
- protected Properties defaults;
-
- private static final long serialVersionUID = 4112578634029874840L;
-
- /**
- * Creates a new empty property list.
- */
- public Properties()
- {
- this.defaults = null;
- }
-
- /**
- * Create a new empty property list with the specified default values.
- * @param defaults a Properties object containing the default values.
- */
- public Properties(Properties defaults)
- {
- this.defaults = defaults;
- }
-
- /**
- * Reads a property list from an input stream. The stream should
- * have the following format: <br>
- *
- * An empty line or a line starting with <code>#</code> or
- * <code>!</code> is ignored. An backslash (<code>\</code>) at the
- * end of the line makes the line continueing on the next line
- * (but make sure there is no whitespace after the backslash).
- * Otherwise, each line describes a key/value pair. <br>
- *
- * The chars up to the first whitespace, = or : are the key. You
- * can include this caracters in the key, if you precede them with
- * a backslash (<code>\</code>). The key is followed by optional
- * whitespaces, optionally one <code>=</code> or <code>:</code>,
- * and optionally some more whitespaces. The rest of the line is
- * the resource belonging to the key. <br>
- *
- * Escape sequences <code>\t, \n, \r, \\, \", \', \!, \#, \ </code>(a
- * space), and unicode characters with the
- * <code>\</code><code>u</code>xxxx notation are detected, and
- * converted to the corresponding single character. <br>
- *
- * <pre>
- * # This is a comment
- * key = value
- * k\:5 \ a string starting with space and ending with newline\n
- * # This is a multiline specification; note that the value contains
- * # no white space.
- * weekdays: Sunday,Monday,Tuesday,Wednesday,\
- * Thursday,Friday,Saturday
- * # The safest way to include a space at the end of a value:
- * label = Name:\<code></code>u0020
- * </pre>
- *
- * @param in the input stream
- * @exception IOException if an error occurred when reading
- * from the input. */
- public void load(InputStream inStream) throws IOException
- {
- // The spec says that the file must be encoded using ISO-8859-1.
- BufferedReader reader =
- new BufferedReader(new InputStreamReader(inStream, "ISO-8859-1"));
- String line;
-
- while ((line = reader.readLine()) != null)
- {
- char c = 0;
- int pos = 0;
- while (pos < line.length()
- && Character.isWhitespace(c = line.charAt(pos)))
- pos++;
-
- // If line is empty or begins with a comment character,
- // skip this line.
- if (pos == line.length() || c == '#' || c == '!')
- continue;
-
- // The characters up to the next Whitespace, ':', or '='
- // describe the key. But look for escape sequences.
- StringBuffer key = new StringBuffer();
- while (pos < line.length()
- && !Character.isWhitespace(c = line.charAt(pos++))
- && c != '=' && c != ':')
- {
- if (c == '\\')
- {
- if (pos == line.length())
- {
- // The line continues on the next line.
- line = reader.readLine();
- pos = 0;
- while (pos < line.length()
- && Character.isWhitespace(c = line.charAt(pos)))
- pos++;
- }
- else
- {
- c = line.charAt(pos++);
- switch (c)
- {
- case 'n':
- key.append('\n');
- break;
- case 't':
- key.append('\t');
- break;
- case 'r':
- key.append('\r');
- break;
- case 'u':
- if (pos + 4 <= line.length())
- {
- char uni = (char) Integer.parseInt
- (line.substring(pos, pos + 4), 16);
- key.append(uni);
- pos += 4;
- } // else throw exception?
- break;
- default:
- key.append(c);
- break;
- }
- }
- }
- else
- key.append(c);
- }
-
- boolean isDelim = (c == ':' || c == '=');
- while (pos < line.length()
- && Character.isWhitespace(c = line.charAt(pos)))
- pos++;
-
- if (!isDelim && (c == ':' || c == '='))
- {
- pos++;
- while (pos < line.length()
- && Character.isWhitespace(c = line.charAt(pos)))
- pos++;
- }
-
- StringBuffer element = new StringBuffer(line.length() - pos);
- while (pos < line.length())
- {
- c = line.charAt(pos++);
- if (c == '\\')
- {
- if (pos == line.length())
- {
- // The line continues on the next line.
- line = reader.readLine();
- pos = 0;
- while (pos < line.length()
- && Character.isWhitespace(c = line.charAt(pos)))
- pos++;
- element.ensureCapacity(line.length() - pos +
- element.length());
- }
- else
- {
- c = line.charAt(pos++);
- switch (c)
- {
- case 'n':
- element.append('\n');
- break;
- case 't':
- element.append('\t');
- break;
- case 'r':
- element.append('\r');
- break;
- case 'u':
- if (pos + 4 <= line.length())
- {
- char uni = (char) Integer.parseInt
- (line.substring(pos, pos + 4), 16);
- element.append(uni);
- pos += 4;
- } // else throw exception?
- break;
- default:
- element.append(c);
- break;
- }
- }
- }
- else
- element.append(c);
- }
- put(key.toString(), element.toString());
- }
- }
-
- /**
- * Calls <code>store(OutputStream out, String header)</code> and
- * ignores the IOException that may be thrown.
- * @deprecated use store instead.
- * @exception ClassCastException if this property contains any key or
- * value that isn't a string.
- */
- public void save(OutputStream out, String header)
- {
- try
- {
- store(out, header);
- }
- catch (IOException ex)
- {
- }
- }
-
- /**
- * Writes the key/value pairs to the given output stream. <br>
- *
- * If header is not null, this method writes a comment containing
- * the header as first line to the stream. The next line (or first
- * line if header is null) contains a comment with the current date.
- * Afterwards the key/value pairs are written to the stream in the
- * following format. <br>
- *
- * Each line has the form <code>key = value</code>. Newlines,
- * Returns and tabs are written as <code>\n,\t,\r</code> resp.
- * The characters <code>\, !, #, =</code> and <code>:</code> are
- * preceeded by a backslash. Spaces are preceded with a backslash,
- * if and only if they are at the beginning of the key. Characters
- * that are not in the ascii range 33 to 127 are written in the
- * <code>\</code><code>u</code>xxxx Form.
- *
- * @param out the output stream
- * @param header the header written in the first line, may be null.
- * @exception ClassCastException if this property contains any key or
- * value that isn't a string.
- */
- public void store(OutputStream out, String header) throws IOException
- {
- // The spec says that the file must be encoded using ISO-8859-1.
- PrintWriter writer
- = new PrintWriter(new OutputStreamWriter (out, "ISO-8859-1"));
- if (header != null)
- writer.println("#" + header);
- writer.println("#" + new Date().toString());
- list(writer);
- writer.flush();
- }
-
- /**
- * Adds the given key/value pair to this properties. This calls
- * the hashtable method put.
- * @param key the key for this property
- * @param value the value for this property
- * @return The old value for the given key.
- * @since JDK1.2 */
- public Object setProperty(String key, String value)
- {
- return put(key, value);
- }
-
- /**
- * Gets the property with the specified key in this property list.
- * If the key is not found, the default property list is searched.
- * If the property is not found in default or the default of
- * default, null is returned.
- * @param key The key for this property.
- * @param defaulValue A default value
- * @return The value for the given key, or null if not found.
- * @exception ClassCastException if this property contains any key or
- * value that isn't a string.
- */
- public String getProperty(String key)
- {
- return getProperty(key, null);
- }
-
- /**
- * Gets the property with the specified key in this property list. If
- * the key is not found, the default property list is searched. If the
- * property is not found in default or the default of default, the
- * specified defaultValue is returned.
- * @param key The key for this property.
- * @param defaulValue A default value
- * @return The value for the given key.
- * @exception ClassCastException if this property contains any key or
- * value that isn't a string.
- */
- public String getProperty(String key, String defaultValue)
- {
- Properties prop = this;
- // Eliminate tail recursion.
- do
- {
- String value = (String) prop.get(key);
- if (value != null)
- return value;
- prop = prop.defaults;
- }
- while (prop != null);
- return defaultValue;
- }
-
- private final void addHashEntries(Hashtable base)
- {
- if (defaults != null)
- defaults.addHashEntries(base);
- Enumeration keys = keys();
- while (keys.hasMoreElements())
- base.put(keys.nextElement(), base);
- }
-
- /**
- * Returns an enumeration of all keys in this property list, including
- * the keys in the default property list.
- */
- 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();
- }
-
- /**
- * Formats a key/value pair for output in a properties file.
- * See store for a description of the format.
- * @param key the key.
- * @param value the value.
- * @see #store
- */
- private String formatForOutput(String key, String value)
- {
- // This is a simple approximation of the expected line size.
- StringBuffer result =
- new StringBuffer(key.length() + value.length() + 16);
- boolean head = true;
- for (int i = 0; i < key.length(); i++)
- {
- char c = key.charAt(i);
- switch (c)
- {
- case '\n':
- result.append("\\n");
- break;
- case '\r':
- result.append("\\r");
- break;
- case '\t':
- result.append("\\t");
- break;
- case '\\':
- result.append("\\\\");
- break;
- case '!':
- result.append("\\!");
- break;
- case '#':
- result.append("\\#");
- break;
- case '=':
- result.append("\\=");
- break;
- case ':':
- result.append("\\:");
- break;
- case ' ':
- result.append("\\ ");
- break;
- default:
- if (c < 32 || c > '~')
- {
- String hex = Integer.toHexString(c);
- result.append("\\u0000".substring(0, 6 - hex.length()));
- result.append(hex);
- }
- else
- result.append(c);
- }
- if (c != 32)
- head = false;
- }
- result.append('=');
- head = true;
- for (int i = 0; i < value.length(); i++)
- {
- char c = value.charAt(i);
- switch (c)
- {
- case '\n':
- result.append("\\n");
- break;
- case '\r':
- result.append("\\r");
- break;
- case '\t':
- result.append("\\t");
- break;
- case '\\':
- result.append("\\\\");
- break;
- case '!':
- result.append("\\!");
- break;
- case '#':
- result.append("\\#");
- break;
- case ' ':
- result.append(head ? "\\ " : " ");
- break;
- default:
- if (c < 32 || c > '~')
- {
- String hex = Integer.toHexString(c);
- result.append("\\u0000".substring(0, 6 - hex.length()));
- result.append(hex);
- }
- else
- result.append(c);
- }
- if (c != 32)
- head = false;
- }
- return result.toString();
- }
-
- /**
- * Writes the key/value pairs to the given print stream. They are
- * written in the way, described in the method store.
- * @param out the stream, where the key/value pairs are written to.
- * @exception ClassCastException if this property contains any key or
- * value that isn't a string.
- * @see #store
- */
- public void list(PrintStream out)
- {
- Enumeration keys = keys();
- Enumeration elts = elements();
- while (keys.hasMoreElements())
- {
- String key = (String) keys.nextElement();
- String elt = (String) elts.nextElement();
- String output = formatForOutput(key, elt);
- out.println(output);
- }
- }
-
- /**
- * Writes the key/value pairs to the given print writer. They are
- * written in the way, described in the method store.
- * @param out the writer, where the key/value pairs are written to.
- * @exception ClassCastException if this property contains any key or
- * value that isn't a string.
- * @see #store
- * @see #list(java.io.PrintStream)
- * @since JDK1.1
- */
- public void list(PrintWriter out)
- {
- Enumeration keys = keys();
- Enumeration elts = elements();
- while (keys.hasMoreElements())
- {
- String key = (String) keys.nextElement();
- String elt = (String) elts.nextElement();
- String output = formatForOutput(key, elt);
- out.println(output);
- }
- }
-}
projects / msp430-gcc.git / blobdiff