--- /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.UnsupportedEncodingException;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+/** Fast String Utilities.
+ *
+ * These string utilities provide both convenience methods and
+ * performance improvements over most standard library versions. The
+ * main aim of the optimizations is to avoid object creation unless
+ * absolutely required.
+ *
+ *
+ */
+public class StringUtil
+{
+ private static final Logger LOG = Log.getLogger(StringUtil.class);
+
+
+ private final static Trie<String> CHARSETS= new ArrayTrie<>(256);
+
+ public static final String ALL_INTERFACES="0.0.0.0";
+ public static final String CRLF="\015\012";
+ public static final String __LINE_SEPARATOR=
+ System.getProperty("line.separator","\n");
+
+ public static final String __ISO_8859_1="ISO-8859-1";
+ public final static String __UTF8="UTF-8";
+ public final static String __UTF16="UTF-16";
+
+ /**
+ * @deprecated Use {@link StandardCharsets#UTF_8}
+ */
+ @Deprecated
+ public final static Charset __UTF8_CHARSET=StandardCharsets.UTF_8;
+ /**
+ * @deprecated Use {@link StandardCharsets#ISO_8859_1}
+ */
+ @Deprecated
+ public final static Charset __ISO_8859_1_CHARSET=StandardCharsets.ISO_8859_1;
+ /**
+ * @deprecated Use {@link StandardCharsets#UTF_16}
+ */
+ @Deprecated
+ public final static Charset __UTF16_CHARSET=StandardCharsets.UTF_16;
+ /**
+ * @deprecated Use {@link StandardCharsets#US_ASCII}
+ */
+ @Deprecated
+ public final static Charset __US_ASCII_CHARSET=StandardCharsets.US_ASCII;
+
+ static
+ {
+ CHARSETS.put("UTF-8",__UTF8);
+ CHARSETS.put("UTF8",__UTF8);
+ CHARSETS.put("UTF-16",__UTF16);
+ CHARSETS.put("UTF16",__UTF16);
+ CHARSETS.put("ISO-8859-1",__ISO_8859_1);
+ CHARSETS.put("ISO_8859_1",__ISO_8859_1);
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Convert alternate charset names (eg utf8) to normalized
+ * name (eg UTF-8).
+ */
+ public static String normalizeCharset(String s)
+ {
+ String n=CHARSETS.get(s);
+ return (n==null)?s:n;
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Convert alternate charset names (eg utf8) to normalized
+ * name (eg UTF-8).
+ */
+ public static String normalizeCharset(String s,int offset,int length)
+ {
+ String n=CHARSETS.get(s,offset,length);
+ return (n==null)?s.substring(offset,offset+length):n;
+ }
+
+
+ /* ------------------------------------------------------------ */
+ public static final char[] lowercases = {
+ '\000','\001','\002','\003','\004','\005','\006','\007',
+ '\010','\011','\012','\013','\014','\015','\016','\017',
+ '\020','\021','\022','\023','\024','\025','\026','\027',
+ '\030','\031','\032','\033','\034','\035','\036','\037',
+ '\040','\041','\042','\043','\044','\045','\046','\047',
+ '\050','\051','\052','\053','\054','\055','\056','\057',
+ '\060','\061','\062','\063','\064','\065','\066','\067',
+ '\070','\071','\072','\073','\074','\075','\076','\077',
+ '\100','\141','\142','\143','\144','\145','\146','\147',
+ '\150','\151','\152','\153','\154','\155','\156','\157',
+ '\160','\161','\162','\163','\164','\165','\166','\167',
+ '\170','\171','\172','\133','\134','\135','\136','\137',
+ '\140','\141','\142','\143','\144','\145','\146','\147',
+ '\150','\151','\152','\153','\154','\155','\156','\157',
+ '\160','\161','\162','\163','\164','\165','\166','\167',
+ '\170','\171','\172','\173','\174','\175','\176','\177' };
+
+ /* ------------------------------------------------------------ */
+ /**
+ * fast lower case conversion. Only works on ascii (not unicode)
+ * @param s the string to convert
+ * @return a lower case version of s
+ */
+ public static String asciiToLowerCase(String s)
+ {
+ char[] c = null;
+ int i=s.length();
+
+ // look for first conversion
+ while (i-->0)
+ {
+ char c1=s.charAt(i);
+ if (c1<=127)
+ {
+ char c2=lowercases[c1];
+ if (c1!=c2)
+ {
+ c=s.toCharArray();
+ c[i]=c2;
+ break;
+ }
+ }
+ }
+
+ while (i-->0)
+ {
+ if(c[i]<=127)
+ c[i] = lowercases[c[i]];
+ }
+
+ return c==null?s:new String(c);
+ }
+
+
+ /* ------------------------------------------------------------ */
+ public static boolean startsWithIgnoreCase(String s,String w)
+ {
+ if (w==null)
+ return true;
+
+ if (s==null || s.length()<w.length())
+ return false;
+
+ for (int i=0;i<w.length();i++)
+ {
+ char c1=s.charAt(i);
+ char c2=w.charAt(i);
+ if (c1!=c2)
+ {
+ if (c1<=127)
+ c1=lowercases[c1];
+ if (c2<=127)
+ c2=lowercases[c2];
+ if (c1!=c2)
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /* ------------------------------------------------------------ */
+ public static boolean endsWithIgnoreCase(String s,String w)
+ {
+ if (w==null)
+ return true;
+
+ if (s==null)
+ return false;
+
+ int sl=s.length();
+ int wl=w.length();
+
+ if (sl<wl)
+ return false;
+
+ for (int i=wl;i-->0;)
+ {
+ char c1=s.charAt(--sl);
+ char c2=w.charAt(i);
+ if (c1!=c2)
+ {
+ if (c1<=127)
+ c1=lowercases[c1];
+ if (c2<=127)
+ c2=lowercases[c2];
+ if (c1!=c2)
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * returns the next index of a character from the chars string
+ */
+ public static int indexFrom(String s,String chars)
+ {
+ for (int i=0;i<s.length();i++)
+ if (chars.indexOf(s.charAt(i))>=0)
+ return i;
+ return -1;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * replace substrings within string.
+ */
+ public static String replace(String s, String sub, String with)
+ {
+ int c=0;
+ int i=s.indexOf(sub,c);
+ if (i == -1)
+ return s;
+
+ StringBuilder buf = new StringBuilder(s.length()+with.length());
+
+ do
+ {
+ buf.append(s.substring(c,i));
+ buf.append(with);
+ c=i+sub.length();
+ } while ((i=s.indexOf(sub,c))!=-1);
+
+ if (c<s.length())
+ buf.append(s.substring(c,s.length()));
+
+ return buf.toString();
+
+ }
+
+
+ /* ------------------------------------------------------------ */
+ /** Remove single or double quotes.
+ */
+ public static String unquote(String s)
+ {
+ return QuotedStringTokenizer.unquote(s);
+ }
+
+
+ /* ------------------------------------------------------------ */
+ /** Append substring to StringBuilder
+ * @param buf StringBuilder to append to
+ * @param s String to append from
+ * @param offset The offset of the substring
+ * @param length The length of the substring
+ */
+ public static void append(StringBuilder buf,
+ String s,
+ int offset,
+ int length)
+ {
+ synchronized(buf)
+ {
+ int end=offset+length;
+ for (int i=offset; i<end;i++)
+ {
+ if (i>=s.length())
+ break;
+ buf.append(s.charAt(i));
+ }
+ }
+ }
+
+
+ /* ------------------------------------------------------------ */
+ /**
+ * append hex digit
+ *
+ */
+ public static void append(StringBuilder buf,byte b,int base)
+ {
+ int bi=0xff&b;
+ int c='0'+(bi/base)%base;
+ if (c>'9')
+ c= 'a'+(c-'0'-10);
+ buf.append((char)c);
+ c='0'+bi%base;
+ if (c>'9')
+ c= 'a'+(c-'0'-10);
+ buf.append((char)c);
+ }
+
+ /* ------------------------------------------------------------ */
+ public static void append2digits(StringBuffer buf,int i)
+ {
+ if (i<100)
+ {
+ buf.append((char)(i/10+'0'));
+ buf.append((char)(i%10+'0'));
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ public static void append2digits(StringBuilder buf,int i)
+ {
+ if (i<100)
+ {
+ buf.append((char)(i/10+'0'));
+ buf.append((char)(i%10+'0'));
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Return a non null string.
+ * @param s String
+ * @return The string passed in or empty string if it is null.
+ */
+ public static String nonNull(String s)
+ {
+ if (s==null)
+ return "";
+ return s;
+ }
+
+ /* ------------------------------------------------------------ */
+ public static boolean equals(String s,char[] buf, int offset, int length)
+ {
+ if (s.length()!=length)
+ return false;
+ for (int i=0;i<length;i++)
+ if (buf[offset+i]!=s.charAt(i))
+ return false;
+ return true;
+ }
+
+ /* ------------------------------------------------------------ */
+ public static String toUTF8String(byte[] b,int offset,int length)
+ {
+ return new String(b,offset,length,StandardCharsets.UTF_8);
+ }
+
+ /* ------------------------------------------------------------ */
+ public static String toString(byte[] b,int offset,int length,String charset)
+ {
+ try
+ {
+ return new String(b,offset,length,charset);
+ }
+ catch (UnsupportedEncodingException e)
+ {
+ throw new IllegalArgumentException(e);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Test if a string is null or only has whitespace characters in it.
+ * <p>
+ * Note: uses codepoint version of {@link Character#isWhitespace(int)} to support Unicode better.
+ *
+ * <pre>
+ * isBlank(null) == true
+ * isBlank("") == true
+ * isBlank("\r\n") == true
+ * isBlank("\t") == true
+ * isBlank(" ") == true
+ * isBlank("a") == false
+ * isBlank(".") == false
+ * isBlank(";\n") == false
+ * </pre>
+ *
+ * @param str
+ * the string to test.
+ * @return true if string is null or only whitespace characters, false if non-whitespace characters encountered.
+ */
+ public static boolean isBlank(String str)
+ {
+ if (str == null)
+ {
+ return true;
+ }
+ int len = str.length();
+ for (int i = 0; i < len; i++)
+ {
+ if (!Character.isWhitespace(str.codePointAt(i)))
+ {
+ // found a non-whitespace, we can stop searching now
+ return false;
+ }
+ }
+ // only whitespace
+ return true;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Test if a string is not null and contains at least 1 non-whitespace characters in it.
+ * <p>
+ * Note: uses codepoint version of {@link Character#isWhitespace(int)} to support Unicode better.
+ *
+ * <pre>
+ * isNotBlank(null) == false
+ * isNotBlank("") == false
+ * isNotBlank("\r\n") == false
+ * isNotBlank("\t") == false
+ * isNotBlank(" ") == false
+ * isNotBlank("a") == true
+ * isNotBlank(".") == true
+ * isNotBlank(";\n") == true
+ * </pre>
+ *
+ * @param str
+ * the string to test.
+ * @return true if string is not null and has at least 1 non-whitespace character, false if null or all-whitespace characters.
+ */
+ public static boolean isNotBlank(String str)
+ {
+ if (str == null)
+ {
+ return false;
+ }
+ int len = str.length();
+ for (int i = 0; i < len; i++)
+ {
+ if (!Character.isWhitespace(str.codePointAt(i)))
+ {
+ // found a non-whitespace, we can stop searching now
+ return true;
+ }
+ }
+ // only whitespace
+ return false;
+ }
+
+ /* ------------------------------------------------------------ */
+ public static boolean isUTF8(String charset)
+ {
+ return __UTF8.equalsIgnoreCase(charset)||__UTF8.equalsIgnoreCase(normalizeCharset(charset));
+ }
+
+
+ /* ------------------------------------------------------------ */
+ public static String printable(String name)
+ {
+ if (name==null)
+ return null;
+ StringBuilder buf = new StringBuilder(name.length());
+ for (int i=0;i<name.length();i++)
+ {
+ char c=name.charAt(i);
+ if (!Character.isISOControl(c))
+ buf.append(c);
+ }
+ return buf.toString();
+ }
+
+ /* ------------------------------------------------------------ */
+ public static String printable(byte[] b)
+ {
+ StringBuilder buf = new StringBuilder();
+ for (int i=0;i<b.length;i++)
+ {
+ char c=(char)b[i];
+ if (Character.isWhitespace(c)|| c>' ' && c<0x7f)
+ buf.append(c);
+ else
+ {
+ buf.append("0x");
+ TypeUtil.toHex(b[i],buf);
+ }
+ }
+ return buf.toString();
+ }
+
+ public static byte[] getBytes(String s)
+ {
+ return s.getBytes(StandardCharsets.ISO_8859_1);
+ }
+
+ public static byte[] getUtf8Bytes(String s)
+ {
+ return s.getBytes(StandardCharsets.UTF_8);
+ }
+
+ public static byte[] getBytes(String s,String charset)
+ {
+ try
+ {
+ return s.getBytes(charset);
+ }
+ catch(Exception e)
+ {
+ LOG.warn(e);
+ return s.getBytes();
+ }
+ }
+
+
+
+ /**
+ * Converts a binary SID to a string SID
+ *
+ * http://en.wikipedia.org/wiki/Security_Identifier
+ *
+ * S-1-IdentifierAuthority-SubAuthority1-SubAuthority2-...-SubAuthorityn
+ */
+ public static String sidBytesToString(byte[] sidBytes)
+ {
+ StringBuilder sidString = new StringBuilder();
+
+ // Identify this as a SID
+ sidString.append("S-");
+
+ // Add SID revision level (expect 1 but may change someday)
+ sidString.append(Byte.toString(sidBytes[0])).append('-');
+
+ StringBuilder tmpBuilder = new StringBuilder();
+
+ // crunch the six bytes of issuing authority value
+ for (int i = 2; i <= 7; ++i)
+ {
+ tmpBuilder.append(Integer.toHexString(sidBytes[i] & 0xFF));
+ }
+
+ sidString.append(Long.parseLong(tmpBuilder.toString(), 16)); // '-' is in the subauth loop
+
+ // the number of subAuthorities we need to attach
+ int subAuthorityCount = sidBytes[1];
+
+ // attach each of the subAuthorities
+ for (int i = 0; i < subAuthorityCount; ++i)
+ {
+ int offset = i * 4;
+ tmpBuilder.setLength(0);
+ // these need to be zero padded hex and little endian
+ tmpBuilder.append(String.format("%02X%02X%02X%02X",
+ (sidBytes[11 + offset] & 0xFF),
+ (sidBytes[10 + offset] & 0xFF),
+ (sidBytes[9 + offset] & 0xFF),
+ (sidBytes[8 + offset] & 0xFF)));
+ sidString.append('-').append(Long.parseLong(tmpBuilder.toString(), 16));
+ }
+
+ return sidString.toString();
+ }
+
+ /**
+ * Converts a string SID to a binary SID
+ *
+ * http://en.wikipedia.org/wiki/Security_Identifier
+ *
+ * S-1-IdentifierAuthority-SubAuthority1-SubAuthority2-...-SubAuthorityn
+ */
+ public static byte[] sidStringToBytes( String sidString )
+ {
+ String[] sidTokens = sidString.split("-");
+
+ int subAuthorityCount = sidTokens.length - 3; // S-Rev-IdAuth-
+
+ int byteCount = 0;
+ byte[] sidBytes = new byte[1 + 1 + 6 + (4 * subAuthorityCount)];
+
+ // the revision byte
+ sidBytes[byteCount++] = (byte)Integer.parseInt(sidTokens[1]);
+
+ // the # of sub authorities byte
+ sidBytes[byteCount++] = (byte)subAuthorityCount;
+
+ // the certAuthority
+ String hexStr = Long.toHexString(Long.parseLong(sidTokens[2]));
+
+ while( hexStr.length() < 12) // pad to 12 characters
+ {
+ hexStr = "0" + hexStr;
+ }
+
+ // place the certAuthority 6 bytes
+ for ( int i = 0 ; i < hexStr.length(); i = i + 2)
+ {
+ sidBytes[byteCount++] = (byte)Integer.parseInt(hexStr.substring(i, i + 2),16);
+ }
+
+
+ for ( int i = 3; i < sidTokens.length ; ++i)
+ {
+ hexStr = Long.toHexString(Long.parseLong(sidTokens[i]));
+
+ while( hexStr.length() < 8) // pad to 8 characters
+ {
+ hexStr = "0" + hexStr;
+ }
+
+ // place the inverted sub authorities, 4 bytes each
+ for ( int j = hexStr.length(); j > 0; j = j - 2)
+ {
+ sidBytes[byteCount++] = (byte)Integer.parseInt(hexStr.substring(j-2, j),16);
+ }
+ }
+
+ return sidBytes;
+ }
+
+
+ /**
+ * Convert String to an integer. Parses up to the first non-numeric character. If no number is found an IllegalArgumentException is thrown
+ *
+ * @param string
+ * A String containing an integer.
+ * @return an int
+ */
+ public static int toInt(String string)
+ {
+ int val = 0;
+ boolean started = false;
+ boolean minus = false;
+
+ for (int i = 0; i < string.length(); i++)
+ {
+ char b = string.charAt(i);
+ if (b <= ' ')
+ {
+ if (started)
+ break;
+ }
+ else if (b >= '0' && b <= '9')
+ {
+ val = val * 10 + (b - '0');
+ started = true;
+ }
+ else if (b == '-' && !started)
+ {
+ minus = true;
+ }
+ else
+ break;
+ }
+
+ if (started)
+ return minus?(-val):val;
+ throw new NumberFormatException(string);
+ }
+
+ /**
+ * Convert String to an long. Parses up to the first non-numeric character. If no number is found an IllegalArgumentException is thrown
+ *
+ * @param string
+ * A String containing an integer.
+ * @return an int
+ */
+ public static long toLong(String string)
+ {
+ long val = 0;
+ boolean started = false;
+ boolean minus = false;
+
+ for (int i = 0; i < string.length(); i++)
+ {
+ char b = string.charAt(i);
+ if (b <= ' ')
+ {
+ if (started)
+ break;
+ }
+ else if (b >= '0' && b <= '9')
+ {
+ val = val * 10L + (b - '0');
+ started = true;
+ }
+ else if (b == '-' && !started)
+ {
+ minus = true;
+ }
+ else
+ break;
+ }
+
+ if (started)
+ return minus?(-val):val;
+ throw new NumberFormatException(string);
+ }
+
+ /**
+ * Truncate a string to a max size.
+ *
+ * @param str the string to possibly truncate
+ * @param maxSize the maximum size of the string
+ * @return the truncated string. if <code>str</code> param is null, then the returned string will also be null.
+ */
+ public static String truncate(String str, int maxSize)
+ {
+ if (str == null)
+ {
+ return null;
+ }
+
+ if (str.length() <= maxSize)
+ {
+ return str;
+ }
+
+ return str.substring(0,maxSize);
+ }
+
+ public static String[] arrayFromString(String s)
+ {
+ if (s==null)
+ return new String[]{};
+
+ if (!s.startsWith("[") || !s.endsWith("]"))
+ throw new IllegalArgumentException();
+ if (s.length()==2)
+ return new String[]{};
+
+ return s.substring(1,s.length()-1).split(" *, *");
+ }
+
+}
projects / gigi.git / blobdiff