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Diffstat (limited to 'javae/src/IceUtil/StringUtil.java')
-rw-r--r-- | javae/src/IceUtil/StringUtil.java | 455 |
1 files changed, 0 insertions, 455 deletions
diff --git a/javae/src/IceUtil/StringUtil.java b/javae/src/IceUtil/StringUtil.java deleted file mode 100644 index 26c6140ca83..00000000000 --- a/javae/src/IceUtil/StringUtil.java +++ /dev/null @@ -1,455 +0,0 @@ -// ********************************************************************** -// -// Copyright (c) 2003-2007 ZeroC, Inc. All rights reserved. -// -// This copy of Ice-E is licensed to you under the terms described in the -// ICEE_LICENSE file included in this distribution. -// -// ********************************************************************** - -package IceUtil; - -public final class StringUtil -{ - // - // Return the index of the first character in str to - // appear in match, starting from 0. Returns -1 if none is - // found. - // - public static int - findFirstOf(String str, String match) - { - return findFirstOf(str, match, 0); - } - - // - // Return the index of the first character in str to - // appear in match, starting from start. Returns -1 if none is - // found. - // - public static int - findFirstOf(String str, String match, int start) - { - final int len = str.length(); - for(int i = start; i < len; i++) - { - char ch = str.charAt(i); - if(match.indexOf(ch) != -1) - { - return i; - } - } - - return -1; - } - - // - // Return the index of the first character in str which does - // not appear in match, starting from 0. Returns -1 if none is - // found. - // - public static int - findFirstNotOf(String str, String match) - { - return findFirstNotOf(str, match, 0); - } - - // - // Return the index of the first character in str which does - // not appear in match, starting from start. Returns -1 if none is - // found. - // - public static int - findFirstNotOf(String str, String match, int start) - { - final int len = str.length(); - for(int i = start; i < len; i++) - { - char ch = str.charAt(i); - if(match.indexOf(ch) == -1) - { - return i; - } - } - - return -1; - } - - // - // Write the byte b as an escape sequence if it isn't a printable ASCII - // character and append the escape sequence to sb. Additional characters - // that should be escaped can be passed in special. If b is any of these - // characters, b is preceded by a backslash in sb. - // - private static void - encodeChar(byte b, StringBuffer sb, String special) - { - switch(b) - { - case (byte)'\\': - { - sb.append("\\\\"); - break; - } - case (byte)'\'': - { - sb.append("\\'"); - break; - } - case (byte)'"': - { - sb.append("\\\""); - break; - } - case (byte)'\b': - { - sb.append("\\b"); - break; - } - case (byte)'\f': - { - sb.append("\\f"); - break; - } - case (byte)'\n': - { - sb.append("\\n"); - break; - } - case (byte)'\r': - { - sb.append("\\r"); - break; - } - case (byte)'\t': - { - sb.append("\\t"); - break; - } - default: - { - if(!(b >= 32 && b <= 126)) - { - sb.append('\\'); - String octal = Integer.toOctalString(b < 0 ? b + 256 : b); - // - // Add leading zeroes so that we avoid problems during - // decoding. For example, consider the encoded string - // \0013 (i.e., a character with value 1 followed by - // the character '3'). If the leading zeroes were omitted, - // the result would be incorrectly interpreted by the - // decoder as a single character with value 11. - // - for(int j = octal.length(); j < 3; j++) - { - sb.append('0'); - } - sb.append(octal); - } - else if(special != null && special.indexOf((char)b) != -1) - { - sb.append('\\'); - sb.append((char)b); - } - else - { - sb.append((char)b); - } - } - } - } - - // - // Add escape sequences (such as "\n", or "\007") to make a string - // readable in ASCII. Any characters that appear in special are - // prefixed with a backlash in the returned string. - // - public static String - escapeString(String s, String special) - { - if(special != null) - { - for(int i = 0; i < special.length(); ++i) - { - if(special.charAt(i) < 32 || special.charAt(i) > 126) - { - throw new IllegalArgumentException("special characters must be in ASCII range 32-126"); - } - } - } - - byte[] bytes = null; - - // - // Normally a simple call to the getBytes() specifying the UTF8 - // encoding is all that is needed here. It appears that the Nokia - // emulators and possibly some of the Nokia phones don't accept - // encoding arguments to string operations. This allows us to - // get a create a byte representation of a UTF encoded string in - // a roundabout way. - // - try - { - java.io.ByteArrayOutputStream bs = new java.io.ByteArrayOutputStream(); - java.io.DataOutputStream os = new java.io.DataOutputStream(bs); - os.writeUTF(s); - bytes = bs.toByteArray(); - } - catch(java.io.IOException ex) - { - Debug.Assert(false); - return null; // This should never happen - } - - StringBuffer result = new StringBuffer(bytes.length); - - // - // The characters in the byte array created by the - // DataOutput.writeUTF() call start on the third byte. - // - for(int i = 2; i < bytes.length; i++) - { - encodeChar(bytes[i], result, special); - } - return result.toString(); - } - - private static char - checkChar(char c) - { - if(!(c >= 32 && c <= 126)) - { - throw new IllegalArgumentException("illegal input character"); - } - return c; - } - - // - // Decode the character or escape sequence starting at start and return it. - // newStart is set to the index of the first character following the decoded character - // or escape sequence. - // - private static char decodeChar(String s, int start, int end, Ice.IntHolder nextStart) - { - Debug.Assert(start >= 0); - Debug.Assert(start < end); - Debug.Assert(end <= s.length()); - - char c; - - if(s.charAt(start) != '\\') - { - c = checkChar(s.charAt(start++)); - } - else - { - if(start + 1 == end) - { - throw new IllegalArgumentException("trailing backslash in argument"); - } - switch(s.charAt(++start)) - { - case '\\': - case '\'': - case '"': - { - c = s.charAt(start++); - break; - } - case 'b': - { - ++start; - c = '\b'; - break; - } - case 'f': - { - ++start; - c = '\f'; - break; - } - case 'n': - { - ++start; - c = '\n'; - break; - } - case 'r': - { - ++start; - c = '\r'; - break; - } - case 't': - { - ++start; - c = '\t'; - break; - } - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - { - int oct = 0; - for(int j = 0; j < 3 && start < end; ++j) - { - int charVal = s.charAt(start++) - '0'; - if(charVal < 0 || charVal > 7) - { - --start; - break; - } - oct = oct * 8 + charVal; - } - if(oct > 255) - { - throw new IllegalArgumentException("octal value out of range"); - } - c = (char)oct; - break; - } - default: - { - c = checkChar(s.charAt(start++)); - break; - } - } - } - nextStart.value = start; - return c; - } - - // - // Remove escape sequences from s and append the result to sb. - // Return true if successful, false otherwise. - // - private static void - decodeString(String s, int start, int end, StringBuffer sb) - { - Ice.IntHolder nextStart = new Ice.IntHolder(); - while(start < end) - { - sb.append(decodeChar(s, start, end, nextStart)); - start = nextStart.value; - } - } - - // - // Remove escape sequences added by escapeString. - // - public static boolean - unescapeString(String s, int start, int end, Ice.StringHolder result) - { - if(start < 0) - { - throw new IllegalArgumentException("start offset must be >= 0"); - } - if(end > s.length()) - { - throw new IllegalArgumentException("end offset must <= s.length()"); - } - if(start > end) - { - throw new IllegalArgumentException("start offset must <= end offset"); - } - - try - { - StringBuffer sb = new StringBuffer(); - decodeString(s, start, end, sb); - String decodedString = sb.toString(); - - byte[] arr = new byte[decodedString.length() + 2]; - for(int i = 2; i < arr.length; ++i) - { - arr[i] = (byte)decodedString.charAt(i-2); - } - - // - // Normally a simple call to the String constructor with the - // byte array and the UTF8 encoding is all that is needed - // here. It appears that the Nokia emulators and possibly - // some of the Nokia phones don't accept encoding arguments - // to string operations. This allows us to get a UTF encoded - // string from our byte array in a somewhat roundabout way. - // - short i = new Integer(decodedString.length()).shortValue(); - arr[0] = (byte)(i & 0xff00); - arr[1] = (byte)(i & 0x00ff); - java.io.ByteArrayInputStream bs = new java.io.ByteArrayInputStream(arr); - java.io.DataInputStream is = new java.io.DataInputStream(bs); - result.value = is.readUTF(); - return true; - } - catch(java.lang.Exception ex) - { - return false; - } - } - - public static int - checkQuote(String s) - { - return checkQuote(s, 0); - } - - // - // If a single or double quotation mark is found at the start position, - // then the position of the matching closing quote is returned. If no - // quotation mark is found at the start position, then 0 is returned. - // If no matching closing quote is found, then -1 is returned. - // - public static int - checkQuote(String s, int start) - { - char quoteChar = s.charAt(start); - if(quoteChar == '"' || quoteChar == '\'') - { - start++; - final int len = s.length(); - int pos; - while(start < len && (pos = s.indexOf(quoteChar, start)) != -1) - { - if(s.charAt(pos - 1) != '\\') - { - return pos; - } - start = pos + 1; - } - return -1; // Unmatched quote - } - return 0; // Not quoted - } - - public static String[] - split(String s, String delim) - { - java.util.Vector arr = new java.util.Vector(); - int beg = findFirstNotOf(s, delim); - int end = s.length(); - while(beg != -1 && (end = findFirstOf(s, delim, beg)) != -1) - { - arr.addElement(s.substring(beg, end)); - beg = findFirstNotOf(s, delim, end); - } - if(beg != -1) - { - if(end == -1) - { - arr.addElement(s.substring(beg)); - } - else - { - arr.addElement(s.substring(beg, end)); - } - } - String[] result = new String[arr.size()]; - arr.copyInto(result); - return result; - } -} |