--- /dev/null
+//
+// ========================================================================
+// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+// ========================================================================
+//
+
+package org.eclipse.jetty.util;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.NoSuchElementException;
+import java.util.StringTokenizer;
+
+/* ------------------------------------------------------------ */
+/** StringTokenizer with Quoting support.
+ *
+ * This class is a copy of the java.util.StringTokenizer API and
+ * the behaviour is the same, except that single and double quoted
+ * string values are recognised.
+ * Delimiters within quotes are not considered delimiters.
+ * Quotes can be escaped with '\'.
+ *
+ * @see java.util.StringTokenizer
+ *
+ */
+public class QuotedStringTokenizer
+ extends StringTokenizer
+{
+ private final static String __delim="\t\n\r";
+ private String _string;
+ private String _delim = __delim;
+ private boolean _returnQuotes=false;
+ private boolean _returnDelimiters=false;
+ private StringBuffer _token;
+ private boolean _hasToken=false;
+ private int _i=0;
+ private int _lastStart=0;
+ private boolean _double=true;
+ private boolean _single=true;
+
+ /* ------------------------------------------------------------ */
+ public QuotedStringTokenizer(String str,
+ String delim,
+ boolean returnDelimiters,
+ boolean returnQuotes)
+ {
+ super("");
+ _string=str;
+ if (delim!=null)
+ _delim=delim;
+ _returnDelimiters=returnDelimiters;
+ _returnQuotes=returnQuotes;
+
+ if (_delim.indexOf('\'')>=0 ||
+ _delim.indexOf('"')>=0)
+ throw new Error("Can't use quotes as delimiters: "+_delim);
+
+ _token=new StringBuffer(_string.length()>1024?512:_string.length()/2);
+ }
+
+ /* ------------------------------------------------------------ */
+ public QuotedStringTokenizer(String str,
+ String delim,
+ boolean returnDelimiters)
+ {
+ this(str,delim,returnDelimiters,false);
+ }
+
+ /* ------------------------------------------------------------ */
+ public QuotedStringTokenizer(String str,
+ String delim)
+ {
+ this(str,delim,false,false);
+ }
+
+ /* ------------------------------------------------------------ */
+ public QuotedStringTokenizer(String str)
+ {
+ this(str,null,false,false);
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public boolean hasMoreTokens()
+ {
+ // Already found a token
+ if (_hasToken)
+ return true;
+
+ _lastStart=_i;
+
+ int state=0;
+ boolean escape=false;
+ while (_i<_string.length())
+ {
+ char c=_string.charAt(_i++);
+
+ switch (state)
+ {
+ case 0: // Start
+ if(_delim.indexOf(c)>=0)
+ {
+ if (_returnDelimiters)
+ {
+ _token.append(c);
+ return _hasToken=true;
+ }
+ }
+ else if (c=='\'' && _single)
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ state=2;
+ }
+ else if (c=='\"' && _double)
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ state=3;
+ }
+ else
+ {
+ _token.append(c);
+ _hasToken=true;
+ state=1;
+ }
+ break;
+
+ case 1: // Token
+ _hasToken=true;
+ if(_delim.indexOf(c)>=0)
+ {
+ if (_returnDelimiters)
+ _i--;
+ return _hasToken;
+ }
+ else if (c=='\'' && _single)
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ state=2;
+ }
+ else if (c=='\"' && _double)
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ state=3;
+ }
+ else
+ {
+ _token.append(c);
+ }
+ break;
+
+ case 2: // Single Quote
+ _hasToken=true;
+ if (escape)
+ {
+ escape=false;
+ _token.append(c);
+ }
+ else if (c=='\'')
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ state=1;
+ }
+ else if (c=='\\')
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ escape=true;
+ }
+ else
+ {
+ _token.append(c);
+ }
+ break;
+
+ case 3: // Double Quote
+ _hasToken=true;
+ if (escape)
+ {
+ escape=false;
+ _token.append(c);
+ }
+ else if (c=='\"')
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ state=1;
+ }
+ else if (c=='\\')
+ {
+ if (_returnQuotes)
+ _token.append(c);
+ escape=true;
+ }
+ else
+ {
+ _token.append(c);
+ }
+ break;
+ }
+ }
+
+ return _hasToken;
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public String nextToken()
+ throws NoSuchElementException
+ {
+ if (!hasMoreTokens() || _token==null)
+ throw new NoSuchElementException();
+ String t=_token.toString();
+ _token.setLength(0);
+ _hasToken=false;
+ return t;
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public String nextToken(String delim)
+ throws NoSuchElementException
+ {
+ _delim=delim;
+ _i=_lastStart;
+ _token.setLength(0);
+ _hasToken=false;
+ return nextToken();
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public boolean hasMoreElements()
+ {
+ return hasMoreTokens();
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public Object nextElement()
+ throws NoSuchElementException
+ {
+ return nextToken();
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Not implemented.
+ */
+ @Override
+ public int countTokens()
+ {
+ return -1;
+ }
+
+
+ /* ------------------------------------------------------------ */
+ /** Quote a string.
+ * The string is quoted only if quoting is required due to
+ * embedded delimiters, quote characters or the
+ * empty string.
+ * @param s The string to quote.
+ * @param delim the delimiter to use to quote the string
+ * @return quoted string
+ */
+ public static String quoteIfNeeded(String s, String delim)
+ {
+ if (s==null)
+ return null;
+ if (s.length()==0)
+ return "\"\"";
+
+
+ for (int i=0;i<s.length();i++)
+ {
+ char c = s.charAt(i);
+ if (c=='\\' || c=='"' || c=='\'' || Character.isWhitespace(c) || delim.indexOf(c)>=0)
+ {
+ StringBuffer b=new StringBuffer(s.length()+8);
+ quote(b,s);
+ return b.toString();
+ }
+ }
+
+ return s;
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Quote a string.
+ * The string is quoted only if quoting is required due to
+ * embeded delimiters, quote characters or the
+ * empty string.
+ * @param s The string to quote.
+ * @return quoted string
+ */
+ public static String quote(String s)
+ {
+ if (s==null)
+ return null;
+ if (s.length()==0)
+ return "\"\"";
+
+ StringBuffer b=new StringBuffer(s.length()+8);
+ quote(b,s);
+ return b.toString();
+
+ }
+
+ private static final char[] escapes = new char[32];
+ static
+ {
+ Arrays.fill(escapes, (char)0xFFFF);
+ escapes['\b'] = 'b';
+ escapes['\t'] = 't';
+ escapes['\n'] = 'n';
+ escapes['\f'] = 'f';
+ escapes['\r'] = 'r';
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Quote a string into an Appendable.
+ * Only quotes and backslash are escaped.
+ * @param buffer The Appendable
+ * @param input The String to quote.
+ */
+ public static void quoteOnly(Appendable buffer, String input)
+ {
+ if(input==null)
+ return;
+
+ try
+ {
+ buffer.append('"');
+ for (int i = 0; i < input.length(); ++i)
+ {
+ char c = input.charAt(i);
+ if (c == '"' || c == '\\')
+ buffer.append('\\');
+ buffer.append(c);
+ }
+ buffer.append('"');
+ }
+ catch (IOException x)
+ {
+ throw new RuntimeException(x);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Quote a string into an Appendable.
+ * The characters ", \, \n, \r, \t, \f and \b are escaped
+ * @param buffer The Appendable
+ * @param input The String to quote.
+ */
+ public static void quote(Appendable buffer, String input)
+ {
+ if(input==null)
+ return;
+
+ try
+ {
+ buffer.append('"');
+ for (int i = 0; i < input.length(); ++i)
+ {
+ char c = input.charAt(i);
+ if (c >= 32)
+ {
+ if (c == '"' || c == '\\')
+ buffer.append('\\');
+ buffer.append(c);
+ }
+ else
+ {
+ char escape = escapes[c];
+ if (escape == 0xFFFF)
+ {
+ // Unicode escape
+ buffer.append('\\').append('u').append('0').append('0');
+ if (c < 0x10)
+ buffer.append('0');
+ buffer.append(Integer.toString(c, 16));
+ }
+ else
+ {
+ buffer.append('\\').append(escape);
+ }
+ }
+ }
+ buffer.append('"');
+ }
+ catch (IOException x)
+ {
+ throw new RuntimeException(x);
+ }
+ }
+
+
+ /* ------------------------------------------------------------ */
+ public static String unquoteOnly(String s)
+ {
+ return unquoteOnly(s, false);
+ }
+
+
+ /* ------------------------------------------------------------ */
+ /** Unquote a string, NOT converting unicode sequences
+ * @param s The string to unquote.
+ * @param lenient if true, will leave in backslashes that aren't valid escapes
+ * @return quoted string
+ */
+ public static String unquoteOnly(String s, boolean lenient)
+ {
+ if (s==null)
+ return null;
+ if (s.length()<2)
+ return s;
+
+ char first=s.charAt(0);
+ char last=s.charAt(s.length()-1);
+ if (first!=last || (first!='"' && first!='\''))
+ return s;
+
+ StringBuilder b = new StringBuilder(s.length() - 2);
+ boolean escape=false;
+ for (int i=1;i<s.length()-1;i++)
+ {
+ char c = s.charAt(i);
+
+ if (escape)
+ {
+ escape=false;
+ if (lenient && !isValidEscaping(c))
+ {
+ b.append('\\');
+ }
+ b.append(c);
+ }
+ else if (c=='\\')
+ {
+ escape=true;
+ }
+ else
+ {
+ b.append(c);
+ }
+ }
+
+ return b.toString();
+ }
+
+ /* ------------------------------------------------------------ */
+ public static String unquote(String s)
+ {
+ return unquote(s,false);
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Unquote a string.
+ * @param s The string to unquote.
+ * @return quoted string
+ */
+ public static String unquote(String s, boolean lenient)
+ {
+ if (s==null)
+ return null;
+ if (s.length()<2)
+ return s;
+
+ char first=s.charAt(0);
+ char last=s.charAt(s.length()-1);
+ if (first!=last || (first!='"' && first!='\''))
+ return s;
+
+ StringBuilder b = new StringBuilder(s.length() - 2);
+ boolean escape=false;
+ for (int i=1;i<s.length()-1;i++)
+ {
+ char c = s.charAt(i);
+
+ if (escape)
+ {
+ escape=false;
+ switch (c)
+ {
+ case 'n':
+ b.append('\n');
+ break;
+ case 'r':
+ b.append('\r');
+ break;
+ case 't':
+ b.append('\t');
+ break;
+ case 'f':
+ b.append('\f');
+ break;
+ case 'b':
+ b.append('\b');
+ break;
+ case '\\':
+ b.append('\\');
+ break;
+ case '/':
+ b.append('/');
+ break;
+ case '"':
+ b.append('"');
+ break;
+ case 'u':
+ b.append((char)(
+ (TypeUtil.convertHexDigit((byte)s.charAt(i++))<<24)+
+ (TypeUtil.convertHexDigit((byte)s.charAt(i++))<<16)+
+ (TypeUtil.convertHexDigit((byte)s.charAt(i++))<<8)+
+ (TypeUtil.convertHexDigit((byte)s.charAt(i++)))
+ )
+ );
+ break;
+ default:
+ if (lenient && !isValidEscaping(c))
+ {
+ b.append('\\');
+ }
+ b.append(c);
+ }
+ }
+ else if (c=='\\')
+ {
+ escape=true;
+ }
+ else
+ {
+ b.append(c);
+ }
+ }
+
+ return b.toString();
+ }
+
+
+ /* ------------------------------------------------------------ */
+ /** Check that char c (which is preceded by a backslash) is a valid
+ * escape sequence.
+ * @param c
+ * @return
+ */
+ private static boolean isValidEscaping(char c)
+ {
+ return ((c == 'n') || (c == 'r') || (c == 't') ||
+ (c == 'f') || (c == 'b') || (c == '\\') ||
+ (c == '/') || (c == '"') || (c == 'u'));
+ }
+
+ /* ------------------------------------------------------------ */
+ public static boolean isQuoted(String s)
+ {
+ return s!=null && s.length()>0 && s.charAt(0)=='"' && s.charAt(s.length()-1)=='"';
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @return handle double quotes if true
+ */
+ public boolean getDouble()
+ {
+ return _double;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @param d handle double quotes if true
+ */
+ public void setDouble(boolean d)
+ {
+ _double=d;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @return handle single quotes if true
+ */
+ public boolean getSingle()
+ {
+ return _single;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @param single handle single quotes if true
+ */
+ public void setSingle(boolean single)
+ {
+ _single=single;
+ }
+}
projects / gigi.git / blobdiff