* Allowed are: *
{,
* }, {@code ~}, {@code .}, {@code ,}Wraps a multiline string of text, identifying words by ' '.
New lines will be separated by the system property line separator. * Very long words, such as URLs will not be wrapped.
* *Leading spaces on a new line are stripped. * Trailing spaces are not stripped.
* *
* WordUtils.wrap(null, *) = null
* WordUtils.wrap("", *) = ""
*
*
* Adapted from the Apache Commons Lang library.
* http://svn.apache.org/viewvc/commons/proper/lang
* /trunk/src/main/java/org/apache/commons/lang3/text/WordUtils.java
* SVN Revision 925967, Mon Mar 22 06:16:49 2010 UTC
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @param str the String to be word wrapped, may be null
* @param wrapLength the column to wrap the words at, less than 1 is treated as 1
* @return a line with newlines inserted, null if null input
*/
private static final String NEWLINE_REGEX = "(?:\\r?\\n)";
public static String wrap(String str, int wrapLength) {
StringBuilder result = new StringBuilder();
for (String piece : str.split(NEWLINE_REGEX)) {
result.append(wrap(piece, wrapLength, null, false));
result.append("\r\n");
}
return result.toString();
}
/**
* Wraps a single line of text, identifying words by ' '.
Leading spaces on a new line are stripped. * Trailing spaces are not stripped.
* *
* WordUtils.wrap(null, *, *, *) = null
* WordUtils.wrap("", *, *, *) = ""
*
*
* This is from the Apache Commons Lang library.
* http://svn.apache.org/viewvc/commons/proper/lang
* /trunk/src/main/java/org/apache/commons/lang3/text/WordUtils.java
* SVN Revision 925967, Mon Mar 22 06:16:49 2010 UTC
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @param str the String to be word wrapped, may be null
* @param wrapLength the column to wrap the words at, less than 1 is treated as 1
* @param newLineStr the string to insert for a new line,
* null uses the system property line separator
* @param wrapLongWords true if long words (such as URLs) should be wrapped
* @return a line with newlines inserted, null if null input
*/
public static String wrap(String str, int wrapLength, String newLineStr, boolean wrapLongWords) {
if (str == null) {
return null;
}
if (newLineStr == null) {
newLineStr = "\r\n";
}
if (wrapLength < 1) {
wrapLength = 1;
}
int inputLineLength = str.length();
int offset = 0;
StringBuilder wrappedLine = new StringBuilder(inputLineLength + 32);
while ((inputLineLength - offset) > wrapLength) {
if (str.charAt(offset) == ' ') {
offset++;
continue;
}
int spaceToWrapAt = str.lastIndexOf(' ', wrapLength + offset);
if (spaceToWrapAt >= offset) {
// normal case
wrappedLine.append(str.substring(offset, spaceToWrapAt));
wrappedLine.append(newLineStr);
offset = spaceToWrapAt + 1;
} else {
// really long word or URL
if (wrapLongWords) {
// wrap really long word one line at a time
wrappedLine.append(str.substring(offset, wrapLength + offset));
wrappedLine.append(newLineStr);
offset += wrapLength;
} else {
// do not wrap really long word, just extend beyond limit
spaceToWrapAt = str.indexOf(' ', wrapLength + offset);
if (spaceToWrapAt >= 0) {
wrappedLine.append(str.substring(offset, spaceToWrapAt));
wrappedLine.append(newLineStr);
offset = spaceToWrapAt + 1;
} else {
wrappedLine.append(str.substring(offset));
offset = inputLineLength;
}
}
}
}
// Whatever is left in line is short enough to just pass through
wrappedLine.append(str.substring(offset));
return wrappedLine.toString();
}
/**
* Extract the 'original' subject value, by ignoring leading
* response/forward marker and '[XX]' formatted tags (as many mailing-list
* softwares do).
*
* * Result is also trimmed. *
* * @param subject * Nevernull.
* @return Never null.
*/
public static String stripSubject(final String subject) {
int lastPrefix = 0;
final Matcher tagMatcher = TAG_PATTERN.matcher(subject);
String tag = null;
// whether tag stripping logic should be active
boolean tagPresent = false;
// whether the last action stripped a tag
boolean tagStripped = false;
if (tagMatcher.find(0)) {
tagPresent = true;
if (tagMatcher.start() == 0) {
// found at beginning of subject, considering it an actual tag
tag = tagMatcher.group();
// now need to find response marker after that tag
lastPrefix = tagMatcher.end();
tagStripped = true;
}
}
final Matcher matcher = RESPONSE_PATTERN.matcher(subject);
// while:
// - lastPrefix is within the bounds
// - response marker found at lastPrefix position
// (to make sure we don't catch response markers that are part of
// the actual subject)
while (lastPrefix < subject.length() - 1
&& matcher.find(lastPrefix)
&& matcher.start() == lastPrefix
&& (!tagPresent || tag == null || subject.regionMatches(matcher.end(), tag, 0,
tag.length()))) {
lastPrefix = matcher.end();
if (tagPresent) {
tagStripped = false;
if (tag == null) {
// attempt to find tag
if (tagMatcher.start() == lastPrefix) {
tag = tagMatcher.group();
lastPrefix += tag.length();
tagStripped = true;
}
} else if (lastPrefix < subject.length() - 1 && subject.startsWith(tag, lastPrefix)) {
// Re: [foo] Re: [foo] blah blah blah
// ^ ^
// ^ ^
// ^ new position
// ^
// initial position
lastPrefix += tag.length();
tagStripped = true;
}
}
}
// Null pointer check is to make the static analysis component of Eclipse happy.
if (tagStripped && (tag != null)) {
// restore the last tag
lastPrefix -= tag.length();
}
if (lastPrefix > -1 && lastPrefix < subject.length() - 1) {
return subject.substring(lastPrefix).trim();
} else {
return subject.trim();
}
}
/**
* @param parentDir
* @param name
* Never null.
*/
public static void touchFile(final File parentDir, final String name) {
final File file = new File(parentDir, name);
try {
if (!file.exists()) {
file.createNewFile();
} else {
file.setLastModified(System.currentTimeMillis());
}
} catch (Exception e) {
Log.d(K9.LOG_TAG, "Unable to touch file: " + file.getAbsolutePath(), e);
}
}
/**
* Creates a unique file in the given directory by appending a hyphen
* and a number to the given filename.
*
* @param directory
* @param filename
* @return
*/
public static File createUniqueFile(File directory, String filename) {
File file = new File(directory, filename);
if (!file.exists()) {
return file;
}
// Get the extension of the file, if any.
int index = filename.lastIndexOf('.');
String format;
if (index != -1) {
String name = filename.substring(0, index);
String extension = filename.substring(index);
format = name + "-%d" + extension;
} else {
format = filename + "-%d";
}
for (int i = 2; i < Integer.MAX_VALUE; i++) {
file = new File(directory, String.format(Locale.US, format, i));
if (!file.exists()) {
return file;
}
}
return null;
}
/**
* @param from
* @param to
* @return
*/
public static boolean move(final File from, final File to) {
if (to.exists()) {
to.delete();
}
to.getParentFile().mkdirs();
try {
FileInputStream in = new FileInputStream(from);
try {
FileOutputStream out = new FileOutputStream(to);
try {
byte[] buffer = new byte[1024];
int count = -1;
while ((count = in.read(buffer)) > 0) {
out.write(buffer, 0, count);
}
} finally {
out.close();
}
} finally {
try { in.close(); } catch (Throwable ignore) {}
}
from.delete();
return true;
} catch (Exception e) {
Log.w(K9.LOG_TAG, "cannot move " + from.getAbsolutePath() + " to " + to.getAbsolutePath(), e);
return false;
}
}
/**
* @param fromDir
* @param toDir
*/
public static void moveRecursive(final File fromDir, final File toDir) {
if (!fromDir.exists()) {
return;
}
if (!fromDir.isDirectory()) {
if (toDir.exists()) {
if (!toDir.delete()) {
Log.w(K9.LOG_TAG, "cannot delete already existing file/directory " + toDir.getAbsolutePath());
}
}
if (!fromDir.renameTo(toDir)) {
Log.w(K9.LOG_TAG, "cannot rename " + fromDir.getAbsolutePath() + " to " + toDir.getAbsolutePath() + " - moving instead");
move(fromDir, toDir);
}
return;
}
if (!toDir.exists() || !toDir.isDirectory()) {
if (toDir.exists()) {
toDir.delete();
}
if (!toDir.mkdirs()) {
Log.w(K9.LOG_TAG, "cannot create directory " + toDir.getAbsolutePath());
}
}
File[] files = fromDir.listFiles();
for (File file : files) {
if (file.isDirectory()) {
moveRecursive(file, new File(toDir, file.getName()));
file.delete();
} else {
File target = new File(toDir, file.getName());
if (!file.renameTo(target)) {
Log.w(K9.LOG_TAG, "cannot rename " + file.getAbsolutePath() + " to " + target.getAbsolutePath() + " - moving instead");
move(file, target);
}
}
}
if (!fromDir.delete()) {
Log.w(K9.LOG_TAG, "cannot delete " + fromDir.getAbsolutePath());
}
}
private static final String IMG_SRC_REGEX = "(?is: