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Diffstat (limited to 'libjava/java/util/StringTokenizer.java')
| -rw-r--r-- | libjava/java/util/StringTokenizer.java | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/libjava/java/util/StringTokenizer.java b/libjava/java/util/StringTokenizer.java deleted file mode 100644 index dcc192c..0000000 --- a/libjava/java/util/StringTokenizer.java +++ /dev/null @@ -1,268 +0,0 @@ -/* StringTokenizer -- breaks a String into tokens - Copyright (C) 1998, 1999, 2001, 2002, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 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; - -/** - * This class splits a string into tokens. The caller can set on which - * delimiters the string should be split and if the delimiters should be - * returned. This is much simpler than {@link java.io.StreamTokenizer}. - * - * <p>You may change the delimiter set on the fly by calling - * nextToken(String). But the semantic is quite difficult; it even - * depends on calling <code>hasMoreTokens()</code>. You should call - * <code>hasMoreTokens()</code> before, otherwise the old delimiters - * after the last token are candidates for being returned. - * - * <p>If you want to get the delimiters, you have to use the three argument - * constructor. The delimiters are returned as token consisting of a - * single character. - * - * @author Jochen Hoenicke - * @author Warren Levy (warrenl@cygnus.com) - * @see java.io.StreamTokenizer - * @status updated to 1.4 - */ -public class StringTokenizer implements Enumeration -{ - // WARNING: StringTokenizer is a CORE class in the bootstrap cycle. See the - // comments in vm/reference/java/lang/Runtime for implications of this fact. - - /** - * The position in the str, where we currently are. - */ - private int pos; - - /** - * The string that should be split into tokens. - */ - private final String str; - - /** - * The length of the string. - */ - private final int len; - - /** - * The string containing the delimiter characters. - */ - private String delim; - - /** - * Tells, if we should return the delimiters. - */ - private final boolean retDelims; - - /** - * Creates a new StringTokenizer for the string <code>str</code>, - * that should split on the default delimiter set (space, tab, - * newline, return and formfeed), and which doesn't return the - * delimiters. - * - * @param str The string to split - * @throws NullPointerException if str is null - */ - public StringTokenizer(String str) - { - this(str, " \t\n\r\f", false); - } - - /** - * Create a new StringTokenizer, that splits the given string on - * the given delimiter characters. It doesn't return the delimiter - * characters. - * - * @param str the string to split - * @param delim a string containing all delimiter characters - * @throws NullPointerException if either argument is null - */ - public StringTokenizer(String str, String delim) - { - this(str, delim, false); - } - - /** - * Create a new StringTokenizer, that splits the given string on - * the given delimiter characters. If you set - * <code>returnDelims</code> to <code>true</code>, the delimiter - * characters are returned as tokens of their own. The delimiter - * tokens always consist of a single character. - * - * @param str the string to split - * @param delim a string containing all delimiter characters - * @param returnDelims tells, if you want to get the delimiters - * @throws NullPointerException if str or delim is null - */ - public StringTokenizer(String str, String delim, boolean returnDelims) - { - len = str.length(); - this.str = str; - // The toString() hack causes the NullPointerException. - this.delim = delim.toString(); - this.retDelims = returnDelims; - this.pos = 0; - } - - /** - * Tells if there are more tokens. - * - * @return true if the next call of nextToken() will succeed - */ - public boolean hasMoreTokens() - { - if (! retDelims) - { - while (pos < len && delim.indexOf(str.charAt(pos)) >= 0) - pos++; - } - return pos < len; - } - - /** - * Returns the nextToken, changing the delimiter set to the given - * <code>delim</code>. The change of the delimiter set is - * permanent, ie. the next call of nextToken(), uses the same - * delimiter set. - * - * @param delim a string containing the new delimiter characters - * @return the next token with respect to the new delimiter characters - * @throws NoSuchElementException if there are no more tokens - * @throws NullPointerException if delim is null - */ - public String nextToken(String delim) throws NoSuchElementException - { - this.delim = delim; - return nextToken(); - } - - /** - * Returns the nextToken of the string. - * - * @return the next token with respect to the current delimiter characters - * @throws NoSuchElementException if there are no more tokens - */ - public String nextToken() throws NoSuchElementException - { - if (pos < len && delim.indexOf(str.charAt(pos)) >= 0) - { - if (retDelims) - return str.substring(pos, ++pos); - while (++pos < len && delim.indexOf(str.charAt(pos)) >= 0); - } - if (pos < len) - { - int start = pos; - while (++pos < len && delim.indexOf(str.charAt(pos)) < 0); - - return str.substring(start, pos); - } - throw new NoSuchElementException(); - } - - /** - * This does the same as hasMoreTokens. This is the - * <code>Enumeration</code> interface method. - * - * @return true, if the next call of nextElement() will succeed - * @see #hasMoreTokens() - */ - public boolean hasMoreElements() - { - return hasMoreTokens(); - } - - /** - * This does the same as nextTokens. This is the - * <code>Enumeration</code> interface method. - * - * @return the next token with respect to the current delimiter characters - * @throws NoSuchElementException if there are no more tokens - * @see #nextToken() - */ - public Object nextElement() throws NoSuchElementException - { - return nextToken(); - } - - /** - * This counts the number of remaining tokens in the string, with - * respect to the current delimiter set. - * - * @return the number of times <code>nextTokens()</code> will succeed - * @see #nextToken() - */ - public int countTokens() - { - int count = 0; - int delimiterCount = 0; - boolean tokenFound = false; // Set when a non-delimiter is found - int tmpPos = pos; - - // Note for efficiency, we count up the delimiters rather than check - // retDelims every time we encounter one. That way, we can - // just do the conditional once at the end of the method - while (tmpPos < len) - { - if (delim.indexOf(str.charAt(tmpPos++)) >= 0) - { - if (tokenFound) - { - // Got to the end of a token - count++; - tokenFound = false; - } - delimiterCount++; // Increment for this delimiter - } - else - { - tokenFound = true; - // Get to the end of the token - while (tmpPos < len - && delim.indexOf(str.charAt(tmpPos)) < 0) - ++tmpPos; - } - } - - // Make sure to count the last token - if (tokenFound) - count++; - - // if counting delmiters add them into the token count - return retDelims ? count + delimiterCount : count; - } -} // class StringTokenizer |