import org.eclipse.jface.text.IRegion;
/**
- * Helper class to provide String manipulation functions not available in standard JDK.
+ * Helper class to provide String manipulation functions not available in
+ * standard JDK.
*/
public class Strings {
-
+
/**
* Indent char is a space char but not a line delimiters.
* <code>== Character.isWhitespace(ch) && ch != '\n' && ch != '\r'</code>
public static boolean isIndentChar(char ch) {
return Character.isWhitespace(ch) && !isLineDelimiterChar(ch);
}
-
+
/**
- * tests if a char is lower case. Fix for 26529
+ * tests if a char is lower case. Fix for 26529
*/
public static boolean isLowerCase(char ch) {
return Character.toLowerCase(ch) == ch;
- }
-
+ }
+
/**
- * Line delimiter chars are '\n' and '\r'.
+ * Line delimiter chars are '\n' and '\r'.
*/
public static boolean isLineDelimiterChar(char ch) {
return ch == '\n' || ch == '\r';
- }
+ }
public static String removeNewLine(String message) {
- StringBuffer result= new StringBuffer();
- int current= 0;
- int index= message.indexOf('\n', 0);
+ StringBuffer result = new StringBuffer();
+ int current = 0;
+ int index = message.indexOf('\n', 0);
while (index != -1) {
result.append(message.substring(current, index));
if (current < index && index != 0)
result.append(' ');
- current= index + 1;
- index= message.indexOf('\n', current);
+ current = index + 1;
+ index = message.indexOf('\n', current);
}
result.append(message.substring(current));
return result.toString();
}
/**
- * Converts the given string into an array of lines. The lines
- * don't contain any line delimiter characters.
- *
+ * Converts the given string into an array of lines. The lines don't contain
+ * any line delimiter characters.
+ *
* @return the string converted into an array of strings. Returns <code>
- * null</code> if the input string can't be converted in an array of lines.
+ * null</code>
+ * if the input string can't be converted in an array of lines.
*/
public static String[] convertIntoLines(String input) {
try {
- ILineTracker tracker= new DefaultLineTracker();
+ ILineTracker tracker = new DefaultLineTracker();
tracker.set(input);
- int size= tracker.getNumberOfLines();
- String result[]= new String[size];
- for (int i= 0; i < size; i++) {
- IRegion region= tracker.getLineInformation(i);
- int offset= region.getOffset();
- result[i]= input.substring(offset, offset + region.getLength());
+ int size = tracker.getNumberOfLines();
+ String result[] = new String[size];
+ for (int i = 0; i < size; i++) {
+ IRegion region = tracker.getLineInformation(i);
+ int offset = region.getOffset();
+ result[i] = input
+ .substring(offset, offset + region.getLength());
}
return result;
} catch (BadLocationException e) {
}
/**
- * Returns <code>true</code> if the given string only consists of
- * white spaces according to Java. If the string is empty, <code>true
- * </code> is returned.
+ * Returns <code>true</code> if the given string only consists of white
+ * spaces according to Java. If the string is empty, <code>true
+ * </code> is
+ * returned.
*
- * @return <code>true</code> if the string only consists of white
- * spaces; otherwise <code>false</code> is returned
+ * @return <code>true</code> if the string only consists of white spaces;
+ * otherwise <code>false</code> is returned
*
* @see java.lang.Character#isWhitespace(char)
*/
public static boolean containsOnlyWhitespaces(String s) {
- int size= s.length();
- for (int i= 0; i < size; i++) {
+ int size = s.length();
+ for (int i = 0; i < size; i++) {
if (!Character.isWhitespace(s.charAt(i)))
return false;
}
return true;
}
-
+
/**
* Removes leading tabs and spaces from the given string. If the string
- * doesn't contain any leading tabs or spaces then the string itself is
+ * doesn't contain any leading tabs or spaces then the string itself is
* returned.
*/
public static String trimLeadingTabsAndSpaces(String line) {
- int size= line.length();
- int start= size;
- for (int i= 0; i < size; i++) {
- char c= line.charAt(i);
+ int size = line.length();
+ int start = size;
+ for (int i = 0; i < size; i++) {
+ char c = line.charAt(i);
if (!isIndentChar(c)) {
- start= i;
+ start = i;
break;
}
}
else
return line.substring(start);
}
-
+
public static String trimTrailingTabsAndSpaces(String line) {
- int size= line.length();
- int end= size;
- for (int i= size - 1; i >= 0; i--) {
- char c= line.charAt(i);
+ int size = line.length();
+ int end = size;
+ for (int i = size - 1; i >= 0; i--) {
+ char c = line.charAt(i);
if (isIndentChar(c)) {
- end= i;
+ end = i;
} else {
break;
}
else
return line.substring(0, end);
}
-
+
/**
* Returns the indent of the given string.
*
- * @param line the text line
- * @param tabWidth the width of the '\t' character.
+ * @param line
+ * the text line
+ * @param tabWidth
+ * the width of the '\t' character.
*/
public static int computeIndent(String line, int tabWidth) {
- int result= 0;
- int blanks= 0;
- int size= line.length();
- for (int i= 0; i < size; i++) {
- char c= line.charAt(i);
+ int result = 0;
+ int blanks = 0;
+ int size = line.length();
+ for (int i = 0; i < size; i++) {
+ char c = line.charAt(i);
if (c == '\t') {
result++;
- blanks= 0;
+ blanks = 0;
} else if (isIndentChar(c)) {
blanks++;
if (blanks == tabWidth) {
result++;
- blanks= 0;
+ blanks = 0;
}
} else {
return result;
}
return result;
}
-
+
/**
- * Removes the given number of idents from the line. Asserts that the given line
- * has the requested number of indents. If <code>indentsToRemove <= 0</code>
- * the line is returned.
+ * Removes the given number of idents from the line. Asserts that the given
+ * line has the requested number of indents. If
+ * <code>indentsToRemove <= 0</code> the line is returned.
*/
- public static String trimIndent(String line, int indentsToRemove, int tabWidth) {
+ public static String trimIndent(String line, int indentsToRemove,
+ int tabWidth) {
if (line == null || indentsToRemove <= 0)
return line;
-
- int start= 0;
- int indents= 0;
- int blanks= 0;
- int size= line.length();
- for (int i= 0; i < size; i++) {
- char c= line.charAt(i);
+
+ int start = 0;
+ int indents = 0;
+ int blanks = 0;
+ int size = line.length();
+ for (int i = 0; i < size; i++) {
+ char c = line.charAt(i);
if (c == '\t') {
indents++;
- blanks= 0;
+ blanks = 0;
} else if (isIndentChar(c)) {
- blanks++;
- if (blanks == tabWidth) {
- indents++;
- blanks= 0;
- }
+ blanks++;
+ if (blanks == tabWidth) {
+ indents++;
+ blanks = 0;
+ }
} else {
- // Assert.isTrue(false, "Line does not have requested number of indents"); //$NON-NLS-1$
- start= i + 1;
- break;
+ // Assert.isTrue(false, "Line does not have requested number of
+ // indents"); //$NON-NLS-1$
+ start = i + 1;
+ break;
}
if (indents == indentsToRemove) {
- start= i + 1;
+ start = i + 1;
break;
- }
+ }
}
if (start == size)
return ""; //$NON-NLS-1$
else
return line.substring(start);
}
-
+
/**
- * Removes all leading indents from the given line. If the line doesn't contain
- * any indents the line itself is returned.
+ * Removes all leading indents from the given line. If the line doesn't
+ * contain any indents the line itself is returned.
*/
public static String trimIndents(String s, int tabWidth) {
- int indent= computeIndent(s, tabWidth);
+ int indent = computeIndent(s, tabWidth);
if (indent == 0)
return s;
return trimIndent(s, indent, tabWidth);
}
-
+
/**
- * Removes the common number of indents from all lines. If a line
- * only consists out of white space it is ignored.
+ * Removes the common number of indents from all lines. If a line only
+ * consists out of white space it is ignored.
*/
public static void trimIndentation(String[] lines, int tabWidth) {
trimIndentation(lines, tabWidth, true);
}
-
+
/**
- * Removes the common number of indents from all lines. If a line
- * only consists out of white space it is ignored. If <code>
- * considerFirstLine</code> is false the first line will be ignored.
+ * Removes the common number of indents from all lines. If a line only
+ * consists out of white space it is ignored. If <code>
+ * considerFirstLine</code>
+ * is false the first line will be ignored.
*/
- public static void trimIndentation(String[] lines, int tabWidth, boolean considerFirstLine) {
- String[] toDo= new String[lines.length];
+ public static void trimIndentation(String[] lines, int tabWidth,
+ boolean considerFirstLine) {
+ String[] toDo = new String[lines.length];
// find indentation common to all lines
- int minIndent= Integer.MAX_VALUE; // very large
- for (int i= considerFirstLine ? 0 : 1; i < lines.length; i++) {
- String line= lines[i];
+ int minIndent = Integer.MAX_VALUE; // very large
+ for (int i = considerFirstLine ? 0 : 1; i < lines.length; i++) {
+ String line = lines[i];
if (containsOnlyWhitespaces(line))
continue;
- toDo[i]= line;
- int indent= computeIndent(line, tabWidth);
+ toDo[i] = line;
+ int indent = computeIndent(line, tabWidth);
if (indent < minIndent) {
- minIndent= indent;
+ minIndent = indent;
}
}
-
+
if (minIndent > 0) {
// remove this indent from all lines
- for (int i= considerFirstLine ? 0 : 1; i < toDo.length; i++) {
- String s= toDo[i];
+ for (int i = considerFirstLine ? 0 : 1; i < toDo.length; i++) {
+ String s = toDo[i];
if (s != null)
- lines[i]= trimIndent(s, minIndent, tabWidth);
+ lines[i] = trimIndent(s, minIndent, tabWidth);
else {
- String line= lines[i];
- int indent= computeIndent(line, tabWidth);
+ String line = lines[i];
+ int indent = computeIndent(line, tabWidth);
if (indent > minIndent)
- lines[i]= trimIndent(line, minIndent, tabWidth);
+ lines[i] = trimIndent(line, minIndent, tabWidth);
else
- lines[i]= trimLeadingTabsAndSpaces(line);
+ lines[i] = trimLeadingTabsAndSpaces(line);
}
}
}
}
-
+
public static String getIndentString(String line, int tabWidth) {
- int size= line.length();
- int end= 0;
- int blanks= 0;
- for (int i= 0; i < size; i++) {
- char c= line.charAt(i);
+ int size = line.length();
+ int end = 0;
+ int blanks = 0;
+ for (int i = 0; i < size; i++) {
+ char c = line.charAt(i);
if (c == '\t') {
- end= i + 1;
- blanks= 0;
+ end = i + 1;
+ blanks = 0;
} else if (isIndentChar(c)) {
blanks++;
if (blanks == tabWidth) {
- end= i + 1;
- blanks= 0;
+ end = i + 1;
+ blanks = 0;
}
} else {
break;
else
return line.substring(0, end);
}
-
+
public static String[] removeTrailingEmptyLines(String[] sourceLines) {
- int lastNonEmpty= findLastNonEmptyLineIndex(sourceLines);
- String[] result= new String[lastNonEmpty + 1];
- for (int i= 0; i < result.length; i++) {
- result[i]= sourceLines[i];
+ int lastNonEmpty = findLastNonEmptyLineIndex(sourceLines);
+ String[] result = new String[lastNonEmpty + 1];
+ for (int i = 0; i < result.length; i++) {
+ result[i] = sourceLines[i];
}
return result;
}
private static int findLastNonEmptyLineIndex(String[] sourceLines) {
- for (int i= sourceLines.length - 1; i >= 0; i--) {
- if (! sourceLines[i].trim().equals(""))//$NON-NLS-1$
+ for (int i = sourceLines.length - 1; i >= 0; i--) {
+ if (!sourceLines[i].trim().equals(""))//$NON-NLS-1$
return i;
}
return -1;
}
-
+
/**
- * Change the indent of, possible muti-line, code range. The current indent is removed, a new indent added.
- * The first line of the code will not be changed. (It is considered to have no indent as it might start in
- * the middle of a line)
+ * Change the indent of, possible muti-line, code range. The current indent
+ * is removed, a new indent added. The first line of the code will not be
+ * changed. (It is considered to have no indent as it might start in the
+ * middle of a line)
*/
- public static String changeIndent(String code, int codeIndentLevel, int tabWidth, String newIndent, String lineDelim) {
+ public static String changeIndent(String code, int codeIndentLevel,
+ int tabWidth, String newIndent, String lineDelim) {
try {
- ILineTracker tracker= new DefaultLineTracker();
+ ILineTracker tracker = new DefaultLineTracker();
tracker.set(code);
- int nLines= tracker.getNumberOfLines();
+ int nLines = tracker.getNumberOfLines();
if (nLines == 1) {
return code;
}
-
- StringBuffer buf= new StringBuffer();
-
- for (int i= 0; i < nLines; i++) {
- IRegion region= tracker.getLineInformation(i);
- int start= region.getOffset();
- int end= start + region.getLength();
- String line= code.substring(start, end);
-
- if (i == 0) { // no indent for first line (contained in the formatted string)
+
+ StringBuffer buf = new StringBuffer();
+
+ for (int i = 0; i < nLines; i++) {
+ IRegion region = tracker.getLineInformation(i);
+ int start = region.getOffset();
+ int end = start + region.getLength();
+ String line = code.substring(start, end);
+
+ if (i == 0) { // no indent for first line (contained in the
+ // formatted string)
buf.append(line);
} else { // no new line after last line
buf.append(lineDelim);
- buf.append(newIndent);
+ buf.append(newIndent);
buf.append(trimIndent(line, codeIndentLevel, tabWidth));
}
}
// can not happen
return code;
}
- }
-
+ }
+
/**
- * Concatenate the given strings into one strings using the passed line delimiter as a
- * delimiter. No delimiter is added to the last line.
+ * Concatenate the given strings into one strings using the passed line
+ * delimiter as a delimiter. No delimiter is added to the last line.
*/
public static String concatenate(String[] lines, String delimiter) {
- StringBuffer buffer= new StringBuffer();
- for (int i= 0; i < lines.length; i++) {
+ StringBuffer buffer = new StringBuffer();
+ for (int i = 0; i < lines.length; i++) {
if (i > 0)
buffer.append(delimiter);
buffer.append(lines[i]);
}
return buffer.toString();
}
-
+
public static boolean equals(String s, char[] c) {
if (s.length() != c.length)
return false;
return true;
}
}
-
git://git.phpeclipse.com / phpeclipse.git / blobdiff