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Diffstat (limited to 'bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/utils/StringUtils.java')
| -rw-r--r-- | bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/utils/StringUtils.java | 743 |
1 files changed, 0 insertions, 743 deletions
diff --git a/bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/utils/StringUtils.java b/bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/utils/StringUtils.java deleted file mode 100644 index 894fde2904..0000000000 --- a/bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/utils/StringUtils.java +++ /dev/null @@ -1,743 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2006 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - * Jens Lukowski/Innoopract - initial renaming/restructuring - * - *******************************************************************************/ -package org.eclipse.wst.sse.core.utils; - - - -import java.util.ArrayList; -import java.util.List; -import com.ibm.icu.util.StringTokenizer; - -import org.eclipse.jface.text.BadLocationException; -import org.eclipse.jface.text.Document; -import org.eclipse.jface.text.IDocument; -import org.eclipse.jface.text.IRegion; -import org.eclipse.wst.sse.core.internal.Logger; - - -public class StringUtils { - protected static final String AMPERSTAND = "&"; //$NON-NLS-1$ - protected static final String AMPERSTAND_ENTITY = "&&;"; //$NON-NLS-1$ - protected static final String CARRIAGE_RETURN = "\r"; //$NON-NLS-1$ - protected static final String CARRIAGE_RETURN_ENTITY = "\\r"; //$NON-NLS-1$ - protected static final String CR = "\r"; //$NON-NLS-1$ - protected static final String CRLF = "\r\n"; //$NON-NLS-1$ - protected static final String DELIMITERS = " \t\n\r\f"; //$NON-NLS-1$ - protected static final String DOUBLE_QUOTE = "\""; //$NON-NLS-1$ - protected static final char DOUBLE_QUOTE_CHAR = '\"'; //$NON-NLS-1$ - protected static final String DOUBLE_QUOTE_ENTITY = """; //$NON-NLS-1$ - - protected static final String EQUAL_SIGN = "="; //$NON-NLS-1$ - protected static final String EQUAL_SIGN_ENTITY = "="; //$NON-NLS-1$ - private static final String FALSE = "false"; //$NON-NLS-1$ - protected static final String GREATER_THAN = ">"; //$NON-NLS-1$ - protected static final String GREATER_THAN_ENTITY = ">"; //$NON-NLS-1$ - protected static final String LESS_THAN = "<"; //$NON-NLS-1$ - protected static final String LESS_THAN_ENTITY = "<"; //$NON-NLS-1$ - protected static final String LF = "\n"; //$NON-NLS-1$ - protected static final String LINE_FEED = "\n"; //$NON-NLS-1$ - protected static final String LINE_FEED_ENTITY = "\\n"; //$NON-NLS-1$ - protected static final String LINE_FEED_TAG = "<dl>"; //$NON-NLS-1$ - protected static final String LINE_TAB = "\t"; //$NON-NLS-1$ - protected static final String LINE_TAB_ENTITY = "\\t"; //$NON-NLS-1$ - protected static final String LINE_TAB_TAG = "<dd>"; //$NON-NLS-1$ - protected static final String SINGLE_QUOTE = "'"; //$NON-NLS-1$ - protected static final char SINGLE_QUOTE_CHAR = '\''; //$NON-NLS-1$ - protected static final String SINGLE_QUOTE_ENTITY = "'"; //$NON-NLS-1$ - protected static final String SPACE = " "; //$NON-NLS-1$ - protected static final String SPACE_ENTITY = " "; //$NON-NLS-1$ - private static final String TRUE = "true"; //$NON-NLS-1$ - - /** - * Append appendString to the end of aString only if aString does not end - * with the insertString. - */ - public static String appendIfNotEndWith(String aString, String appendString) { - if ((aString != null) && (appendString != null)) - if (aString.endsWith(appendString)) - return aString; - else - return aString + appendString; - else - return aString; - } - - /** - * Breaks out space-separated words into an array of words. For example: - * <code>"no comment"</code> into an array <code>a[0]="no"</code> and - * <code>a[1]= "comment"</code>. - * - * @param value - * the string to be converted - * @return the list of words - */ - public static String[] asArray(String value) { - ArrayList list = new ArrayList(); - StringTokenizer stok = new StringTokenizer(value); - while (stok.hasMoreTokens()) { - list.add(stok.nextToken()); - } - String result[] = new String[list.size()]; - list.toArray(result); - return result; - } - - /** - * Breaks out delim-separated words into an array of words. For example: - * <code>"no comment"</code> into an array <code>a[0]="no"</code> and - * <code>a[1]= "comment"</code>. - * - * @param value - * the string to be converted - * @return the list of words - */ - public static String[] asArray(String value, String delim) { - return asArray(value, delim, false); - } - - /** - * Breaks out delim-separated words into an array of words. For example: - * <code>"no comment"</code> into an array <code>a[0]="no"</code> and - * <code>a[1]= "comment"</code>. - * - * @param value - * the string to be converted - * @return the list of words - */ - public static String[] asArray(String value, String delim, boolean returnTokens) { - ArrayList list = new ArrayList(); - StringTokenizer stok = new StringTokenizer(value, delim, returnTokens); - while (stok.hasMoreTokens()) { - list.add(stok.nextToken()); - } - String result[] = new String[list.size()]; - list.toArray(result); - return result; - } - - /** - * Breaks out delim-separated words into an array of words. For example: - * <code>"abc,,def"</code> into an array <code>a[0]="abc"</code>, - * <code>a[1]=null</code>, and <code>a[2]= "def"</code> where "," is - * the delim. - * - * @param value - * the string to be converted - * @return the list of words - */ - public static String[] asFixedArray(String value, String delim) { - String array[] = asArray(value, delim, true); - int arrayLength = array.length; - boolean stringFound = false; - ArrayList list = new ArrayList(); - - for (int i = 0; i < arrayLength; i++) { - String token = array[i]; - if (token.compareTo(delim) == 0) { - if (!stringFound) - list.add(null); - stringFound = false; - } - else { - list.add(token); - stringFound = true; - } - } - // add one more null if last token is the delim - if (!stringFound) - list.add(null); - - String result[] = new String[list.size()]; - list.toArray(result); - return result; - } - - public static String chop(String source) { - return chop(source, "/"); //$NON-NLS-1$ - } - - public static String chop(String source, String delimiter) { - return source.substring(0, source.lastIndexOf(delimiter)); - } - - public static boolean contains(String[] arrayOfStrings, String needle, boolean caseSensitive) { - boolean result = false; - if (needle == null) - return false; - if (arrayOfStrings == null) - return false; - - if (caseSensitive) { - for (int i = 0; i < arrayOfStrings.length; i++) { - if (needle.equals(arrayOfStrings[i])) { - result = true; - break; - } - } - } - else { - for (int i = 0; i < arrayOfStrings.length; i++) { - if (needle.equalsIgnoreCase(arrayOfStrings[i])) { - result = true; - break; - } - } - } - return result; - } - - public static boolean containsLetters(String fullValue) { - - if (fullValue == null || fullValue.length() == 0) - return false; - - char[] chars = fullValue.toCharArray(); - for (int i = 0; i < fullValue.length(); i++) - if (Character.isLetter(chars[i])) - return true; - - return false; - } - - public static boolean containsLineDelimiter(String aString) { - return indexOfLineDelimiter(aString) != -1; - } - - public static String convertLineDelimiters(String allText, String lineDelimiterToUse) { - IDocument tempDoc = new Document(allText); - - if (lineDelimiterToUse == null) - lineDelimiterToUse = System.getProperty("line.separator"); //$NON-NLS-1$ - - String newText = ""; //$NON-NLS-1$ - int lineCount = tempDoc.getNumberOfLines(); - for (int i = 0; i < lineCount; i++) { - try { - org.eclipse.jface.text.IRegion lineInfo = tempDoc.getLineInformation(i); - int lineStartOffset = lineInfo.getOffset(); - int lineLength = lineInfo.getLength(); - int lineEndOffset = lineStartOffset + lineLength; - newText += allText.substring(lineStartOffset, lineEndOffset); - - if ((i < lineCount - 1) && (tempDoc.getLineDelimiter(i) != null)) - newText += lineDelimiterToUse; - } - catch (BadLocationException e) { - // log for now, unless we find reason not to - Logger.log(Logger.INFO, e.getMessage()); - } - } - - return newText; - } - - /** - * Replaces all instances of special HTML characters with the appropriate - * HTML entity equivalent. WARNING only use this method for strings that - * dont already have HTML-specific items such as tags and entities. - * - * @param String - * content String to convert - * - * @return String the converted string - * @see HTMLPrinter#convertToHTMLContent(String content) - */ - public static String convertToHTMLContent(String content) { - content = replace(content, AMPERSTAND, AMPERSTAND_ENTITY); - content = replace(content, LESS_THAN, LESS_THAN_ENTITY); - content = replace(content, GREATER_THAN, GREATER_THAN_ENTITY); - content = replace(content, LINE_FEED, LINE_FEED_TAG); - content = replace(content, LINE_TAB, LINE_TAB_TAG); - content = replace(content, SINGLE_QUOTE, SINGLE_QUOTE_ENTITY); - content = replace(content, DOUBLE_QUOTE, DOUBLE_QUOTE_ENTITY); - content = replace(content, SPACE + SPACE, SPACE_ENTITY + SPACE_ENTITY); // replacing - // every - // space - // would - // be - // too - // much - return content; - } - - /** - * Converts a string into a form that will not conflict with saving it - * into an INI file - */ - public static String escape(String normalString) { - if (normalString == null) - return null; - StringBuffer escapedBuffer = new StringBuffer(); - StringTokenizer toker = new StringTokenizer(normalString, EQUAL_SIGN + LINE_FEED + CARRIAGE_RETURN + LINE_TAB, true); - String chunk = null; - while (toker.hasMoreTokens()) { - chunk = toker.nextToken(); - if (chunk.equals(EQUAL_SIGN)) { - escapedBuffer.append(EQUAL_SIGN_ENTITY); - } - else if (chunk.equals(LINE_FEED)) { - escapedBuffer.append(LINE_FEED_ENTITY); - } - else if (chunk.equals(CARRIAGE_RETURN)) { - escapedBuffer.append(CARRIAGE_RETURN_ENTITY); - } - else if (chunk.equals(LINE_TAB)) { - escapedBuffer.append(LINE_TAB_ENTITY); - } - else { - escapedBuffer.append(chunk); - } - } - return escapedBuffer.toString(); - } - - /** - * Returns the first line of the given text without a trailing delimiter - * - * @param text - * @return - */ - public static String firstLineOf(String text) { - if (text == null || text.length() < 1) { - return text; - } - IDocument doc = new Document(text); - try { - int lineNumber = doc.getLineOfOffset(0); - IRegion line = doc.getLineInformation(lineNumber); - return doc.get(line.getOffset(), line.getLength()); - } - catch (BadLocationException e) { - // do nothing - } - return text; - } - - public static int indexOfLastLineDelimiter(String aString) { - return indexOfLastLineDelimiter(aString, aString.length()); - } - - public static int indexOfLastLineDelimiter(String aString, int offset) { - int index = -1; - - if (aString != null && aString.length() > 0) { - index = aString.lastIndexOf(CRLF, offset); - if (index == -1) { - index = aString.lastIndexOf(CR, offset); - if (index == -1) - index = aString.lastIndexOf(LF, offset); - } - } - - return index; - } - - public static int indexOfLineDelimiter(String aString) { - return indexOfLineDelimiter(aString, 0); - } - - public static int indexOfLineDelimiter(String aString, int offset) { - int index = -1; - - if (aString != null && aString.length() > 0) { - index = aString.indexOf(CRLF, offset); - if (index == -1) { - index = aString.indexOf(CR, offset); - if (index == -1) - index = aString.indexOf(LF, offset); - } - } - - return index; - } - - public static int indexOfNonblank(String aString) { - return indexOfNonblank(aString, 0); - } - - public static int indexOfNonblank(String aString, int offset) { - int index = -1; - - if (aString != null && aString.length() > 0) { - for (int i = offset; i < aString.length(); i++) { - if (DELIMITERS.indexOf(aString.substring(i, i + 1)) == -1) { - index = i; - break; - } - } - } - - return index; - } - - /** - * Insert insertString to the beginning of aString only if aString does - * not start with the insertString. - */ - public static String insertIfNotStartWith(String aString, String insertString) { - if ((aString != null) && (insertString != null)) - if (aString.startsWith(insertString)) - return aString; - else - return insertString + aString; - else - return aString; - } - - public static boolean isQuoted(String string) { - if ((string == null) || (string.length() < 2)) - return false; - - int lastIndex = string.length() - 1; - char firstChar = string.charAt(0); - char lastChar = string.charAt(lastIndex); - - return (((firstChar == SINGLE_QUOTE_CHAR) && (lastChar == SINGLE_QUOTE_CHAR)) || ((firstChar == DOUBLE_QUOTE_CHAR) && (lastChar == DOUBLE_QUOTE_CHAR))); - } - - /** - * Unit tests. - * - * @param args - * java.lang.String[] - */ - public static void main(String[] args) { - // testPaste(); - testStripNonLetterDigits(); - } - - /* - * Returns the merged form of both strings - */ - public static String merge(String newStart, String newEnd) { - String[] regions = overlapRegions(newStart, newEnd); - return regions[0] + regions[1] + regions[2]; - } - - public static int occurrencesOf(String searchString, char targetChar) { - int result = 0; - int len = searchString.length(); - for (int i = 0; i < len; i++) { - if (targetChar == searchString.charAt(i)) - result++; - } - return result; - } - - /** - * - * @return java.lang.String[] - * @param start - * java.lang.String - * @param end - * java.lang.String - * - * Returns a 3 String array containing unique text from the start, - * duplicated text that overlaps the start and end, and the unique text - * from the end. - */ - private static String[] overlapRegions(String start, String end) { - String[] results = null; - if (start != null && end == null) { - results = new String[]{start, "", ""}; //$NON-NLS-2$//$NON-NLS-1$ - } - else if (start == null && end != null) { - results = new String[]{"", "", end}; //$NON-NLS-2$//$NON-NLS-1$ - } - else if (start == null && end == null) { - results = new String[]{"", "", ""}; //$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$ - } - else if (start != null && end != null) { - - int startLength = start.length(); - int endLength = end.length(); - - if (startLength == 0 || endLength == 0) { - results = new String[]{"", "", ""}; //$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$ - } - else { - results = new String[3]; - String testStart = ""; //$NON-NLS-1$ - String testEnd = ""; //$NON-NLS-1$ - int mergeLength = Math.min(startLength, endLength); - boolean finished = false; - while (mergeLength > 0 && !finished) { - testStart = start.substring(startLength - mergeLength); - testEnd = end.substring(0, mergeLength); - // case sensitive - if (testStart.equals(testEnd)) { - finished = true; - results[0] = start.substring(0, startLength - mergeLength); - results[1] = start.substring(startLength - mergeLength); - results[2] = end.substring(mergeLength); - } - mergeLength--; - } - if (!finished) { - results[0] = start; - results[1] = ""; //$NON-NLS-1$ - results[2] = end; - } - } - } - return results; - } - - /** - * Packs an array of Strings into a single comma delimited String. - * - * @param strings - * @return - * @todo Generated comment - */ - public static String pack(String[] strings) { - StringBuffer buf = new StringBuffer(); - for (int i = 0; i < strings.length; i++) { - buf.append(StringUtils.replace(strings[i], ",", ",")); //$NON-NLS-1$ //$NON-NLS-2$ - if (i < strings.length - 1) - buf.append(","); //$NON-NLS-1$ - } - return buf.toString(); - } - - /* - * Pastes the new text into the old at the start position, replacing text - * implied by length. - */ - public static String paste(String oldText, String newText, int start, int length) { - String result = null; - StringBuffer sb = new StringBuffer(); - int startIndex = start; - int endIndex = start + length; - if (startIndex > oldText.length()) { - startIndex = oldText.length(); - } - sb.append(oldText.substring(0, startIndex)); - // null or empty new text accompliches a delete - if (newText != null) { - sb.append(newText); - } - if (endIndex < oldText.length()) { - - sb.append(oldText.substring(endIndex)); - } - result = sb.toString(); - return result; - } - - /** - * Replace matching literal portions of a string with another string - */ - public static String replace(String aString, String source, String target) { - if (aString == null) - return null; - String normalString = ""; //$NON-NLS-1$ - int length = aString.length(); - int position = 0; - int previous = 0; - int spacer = source.length(); - while (position + spacer - 1 < length && aString.indexOf(source, position) > -1) { - position = aString.indexOf(source, previous); - normalString = normalString + aString.substring(previous, position) + target; - position += spacer; - previous = position; - } - normalString = normalString + aString.substring(position, aString.length()); - - return normalString; - } - - /** - * Restore the entity references for markup delimiters in text where they - * have been replaced by the proper Unicode values through a DOM text - * parser. - */ - public static String restoreMarkers(String text) { - String content = text; - content = replace(content, AMPERSTAND, AMPERSTAND_ENTITY); - content = replace(content, LESS_THAN, LESS_THAN_ENTITY); - content = replace(content, GREATER_THAN, GREATER_THAN_ENTITY); - return content; - } - - /** - * Removes extra whitespace characters and quotes - */ - public static String strip(String quotedString) { - if (quotedString == null || quotedString.length() == 0) - return quotedString; - String trimmed = quotedString.trim(); - if (trimmed.length() < 2) - return quotedString; - - char first = trimmed.charAt(0); - char nextToLast = trimmed.charAt(trimmed.length() - 2); - char last = trimmed.charAt(trimmed.length() - 1); - - if ((first == '\"' && last == '\"' && nextToLast != '\\') || (first == '\'' && last == '\'' && nextToLast != '\\')) { - return trimmed.substring(1, trimmed.length() - 1); - } - return trimmed; - } - - /** - * This method strips anything from the beginning and end of a string that - * is not a letter or digit. It is used by some encoding detectors to come - * up with the encoding name from illformed input (e.g in <?xml - * encoding="abc?> -- where final quote is left off, the '>' is returned - * with the rest of the attribute value 'abc'). - */ - public static String stripNonLetterDigits(String fullValue) { - if (fullValue == null || fullValue.length() == 0) - return fullValue; - int fullValueLength = fullValue.length(); - int firstPos = 0; - while (firstPos < fullValueLength && !Character.isLetterOrDigit(fullValue.charAt(firstPos))) { - firstPos++; - } - int lastPos = fullValueLength - 1; - while (lastPos > firstPos && !Character.isLetterOrDigit(fullValue.charAt(lastPos))) { - lastPos--; - } - String result = fullValue; - if (firstPos != 0 || lastPos != fullValueLength) { - result = fullValue.substring(firstPos, lastPos + 1); - } - return result; - } - - /** - * Similar to strip, except quotes don't need to match such as "UTF' is - * still stripped of both quotes. (Plus, this one does not detect escaped - * quotes) - */ - public static String stripQuotes(String quotedValue) { - if (quotedValue == null) - return null; - // normally will never have leading or trailing blanks, - // but if it does, we'll do lenient interpretation - return stripQuotesLeaveInsideSpace(quotedValue).trim(); - } - - /** - * Like strip quotes, except leaves the start and end space inside the - * quotes - * - * @param quotedValue - * @return - */ - public static String stripQuotesLeaveInsideSpace(String quotedValue) { - if (quotedValue == null) - return null; - // nomally will never have leading or trailing blanks ... but just in - // case. - String result = quotedValue.trim(); - int len = result.length(); - if (len > 0) { - char firstChar = result.charAt(0); - if ((firstChar == SINGLE_QUOTE_CHAR) || (firstChar == DOUBLE_QUOTE_CHAR)) { - result = result.substring(1, len); - } - len = result.length(); - if (len > 0) { - char lastChar = result.charAt(len - 1); - if ((lastChar == SINGLE_QUOTE_CHAR) || (lastChar == DOUBLE_QUOTE_CHAR)) { - result = result.substring(0, len - 1); - } - } - } - return result; - } - - public static void testPaste() { - String testString = "The quick brown fox ..."; //$NON-NLS-1$ - System.out.println(paste(testString, null, 4, 5)); - System.out.println(paste(testString, null, 4, 6)); - System.out.println(paste(testString, "", 4, 6)); //$NON-NLS-1$ - System.out.println(paste(testString, "fast", 4, 6)); //$NON-NLS-1$ - System.out.println(paste(testString, "fast ", 4, 6)); //$NON-NLS-1$ - System.out.println(paste(testString, "But ", 0, 0)); //$NON-NLS-1$ - System.out.println(paste("", "burp", 4, 6)); //$NON-NLS-2$//$NON-NLS-1$ - } - - public static void testStripNonLetterDigits() { - String testString = "abc"; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - testString = ""; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - testString = "\"abc\""; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - testString = "\"ab-c1?"; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - testString = "+++"; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - testString = "abc="; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - testString = "abc "; //$NON-NLS-1$ - System.out.println(testString + " -->" + stripNonLetterDigits(testString) + "<--"); //$NON-NLS-1$ //$NON-NLS-2$ - - } - - public static String toString(boolean booleanValue) { - if (booleanValue) - return TRUE; - else - return FALSE; - } - - /** - * Remove "escaped" chars from a string. - */ - public static String unescape(String aString) { - if (aString == null) - return null; - String normalString = replace(aString, EQUAL_SIGN_ENTITY, EQUAL_SIGN); - normalString = replace(normalString, LINE_FEED_ENTITY, LINE_FEED); - normalString = replace(normalString, CARRIAGE_RETURN_ENTITY, CARRIAGE_RETURN); - normalString = replace(normalString, LINE_TAB_ENTITY, LINE_TAB); - return normalString; - } - - public static String uniqueEndOf(String newStart, String newEnd) { - String[] regions = overlapRegions(newStart, newEnd); - return regions[2]; - } - - /** - * Unpacks a comma delimited String into an array of Strings - * - * @param s - * @return - * @todo Generated comment - */ - public static String[] unpack(String s) { - if (s == null) - return new String[0]; - StringTokenizer toker = new StringTokenizer(s, ","); //$NON-NLS-1$ - List list = new ArrayList(); - while (toker.hasMoreTokens()) { - // since we're separating the values with ',', escape ',' in the - // values - list.add(StringUtils.replace(toker.nextToken(), ",", ",").trim()); //$NON-NLS-1$ //$NON-NLS-2$ - } - return (String[]) list.toArray(new String[0]); - } - - /** - * StringUtils constructor comment. - */ - private StringUtils() { - super(); - } - -} |