/**
* Find free space on the Windows platform using the 'dir' command.
*
* @param path the path to get free space for, including the colon
* @param timeout The timeout amount in milliseconds or no timeout if the value is zero or less
* @return the amount of free drive space on the drive
* @throws IOException if an error occurs
*/
long freeSpaceWindows(String path, final long timeout) throws IOException {
path = FilenameUtils.normalize(path, false);
if (path.length() > 0 && path.charAt(0) != '"') {
path = "\"" + path + "\"";
}
// build and run the 'dir' command
final String[] cmdAttribs = new String[] {"cmd.exe", "/C", "dir /a /-c " + path};
// read in the output of the command to an ArrayList
final List<String> lines = performCommand(cmdAttribs, Integer.MAX_VALUE, timeout);
// now iterate over the lines we just read and find the LAST
// non-empty line (the free space bytes should be in the last element
// of the ArrayList anyway, but this will ensure it works even if it's
// not, still assuming it is on the last non-blank line)
for (int i = lines.size() - 1; i >= 0; i--) {
final String line = lines.get(i);
if (line.length() > 0) {
return parseDir(line, path);
}
}
// all lines are blank
throw new IOException(
"Command line 'dir /-c' did not return any info " + "for path '" + path + "'");
}
public static boolean directoryContains(File directory, File child) throws IOException {
if (directory == null) {
throw new IllegalArgumentException("Directory must not be null");
}
if (!directory.isDirectory()) {
throw new IllegalArgumentException("Not a directory: " + directory);
}
if (child == null) {
return false;
}
if ((!directory.exists()) || (!child.exists())) {
return false;
}
String canonicalParent = directory.getCanonicalPath();
String canonicalChild = child.getCanonicalPath();
return FilenameUtils.directoryContains(canonicalParent, canonicalChild);
}
public static boolean isSymlink(File file) throws IOException {
if (file == null) {
throw new NullPointerException("File must not be null");
}
if (FilenameUtils.isSystemWindows()) {
return false;
}
File fileInCanonicalDir = null;
if (file.getParent() == null) {
fileInCanonicalDir = file;
} else {
File canonicalDir = file.getParentFile().getCanonicalFile();
fileInCanonicalDir = new File(canonicalDir, file.getName());
}
if (fileInCanonicalDir.getCanonicalFile().equals(fileInCanonicalDir.getAbsoluteFile())) {
return false;
}
return true;
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
for (FileItem item : items) {
if (item.isFormField()) {
// Process regular form field (input type="text|radio|checkbox|etc", select, etc).
String fieldname = item.getFieldName();
String fieldvalue = item.getString();
// ... (do your job here)
} else {
// Process form file field (input type="file").
String fieldname = item.getFieldName();
String filename = FilenameUtils.getName(item.getName());
InputStream filecontent = item.getInputStream();
// ... (do your job here)
}
}
} catch (FileUploadException e) {
throw new ServletException("Cannot parse multipart request.", e);
}
// ...
}
/**
* Enumeration of IO case sensitivity.
*
* <p>Different filing systems have different rules for case-sensitivity. Windows is
* case-insensitive, Unix is case-sensitive.
*
* <p>This class captures that difference, providing an enumeration to control how filename
* comparisons should be performed. It also provides methods that use the enumeration to perform
* comparisons.
*
* <p>Wherever possible, you should use the <code>check</code> methods in this class to compare
* filenames.
*
* @author Stephen Colebourne
* @version $Id$
* @since Commons IO 1.3
*/
public final class IOCase implements Serializable {
/** The constant for case sensitive regardless of operating system. */
public static final IOCase SENSITIVE = new IOCase("Sensitive", true);
/** The constant for case insensitive regardless of operating system. */
public static final IOCase INSENSITIVE = new IOCase("Insensitive", false);
/**
* The constant for case sensitivity determined by the current operating system. Windows is
* case-insensitive when comparing filenames, Unix is case-sensitive.
*
* <p>If you derialize this constant of Windows, and deserialize on Unix, or vice versa, then the
* value of the case-sensitivity flag will change.
*/
public static final IOCase SYSTEM = new IOCase("System", !FilenameUtils.isSystemWindows());
/** Serialization version. */
private static final long serialVersionUID = -6343169151696340687L;
/** The enumeration name. */
private final String name;
/** The sensitivity flag. */
private final transient boolean sensitive;
// -----------------------------------------------------------------------
/**
* Factory method to create an IOCase from a name.
*
* @param name the name to find
* @return the IOCase object
* @throws IllegalArgumentException if the name is invalid
*/
public static IOCase forName(String name) {
if (IOCase.SENSITIVE.name.equals(name)) {
return IOCase.SENSITIVE;
}
if (IOCase.INSENSITIVE.name.equals(name)) {
return IOCase.INSENSITIVE;
}
if (IOCase.SYSTEM.name.equals(name)) {
return IOCase.SYSTEM;
}
throw new IllegalArgumentException("Invalid IOCase name: " + name);
}
// -----------------------------------------------------------------------
/**
* Private constructor.
*
* @param name the name
* @param sensitive the sensitivity
*/
private IOCase(String name, boolean sensitive) {
this.name = name;
this.sensitive = sensitive;
}
/**
* Replaces the enumeration from the stream with a real one. This ensures that the correct flag is
* set for SYSTEM.
*
* @return the resolved object
*/
private Object readResolve() {
return forName(name);
}
// -----------------------------------------------------------------------
/**
* Gets the name of the constant.
*
* @return the name of the constant
*/
public String getName() {
return name;
}
/**
* Does the object represent case sensitive comparison.
*
* @return true if case sensitive
*/
public boolean isCaseSensitive() {
return sensitive;
}
// -----------------------------------------------------------------------
/**
* Compares two strings using the case-sensitivity rule.
*
* <p>This method mimics {@link String#compareTo} but takes case-sensitivity into account.
*
* @param str1 the first string to compare, not null
* @param str2 the second string to compare, not null
* @return true if equal using the case rules
* @throws NullPointerException if either string is null
*/
public int checkCompareTo(String str1, String str2) {
if (str1 == null || str2 == null) {
throw new NullPointerException("The strings must not be null");
}
return sensitive ? str1.compareTo(str2) : str1.compareToIgnoreCase(str2);
}
/**
* Compares two strings using the case-sensitivity rule.
*
* <p>This method mimics {@link String#equals} but takes case-sensitivity into account.
*
* @param str1 the first string to compare, not null
* @param str2 the second string to compare, not null
* @return true if equal using the case rules
* @throws NullPointerException if either string is null
*/
public boolean checkEquals(String str1, String str2) {
if (str1 == null || str2 == null) {
throw new NullPointerException("The strings must not be null");
}
return sensitive ? str1.equals(str2) : str1.equalsIgnoreCase(str2);
}
/**
* Checks if one string starts with another using the case-sensitivity rule.
*
* <p>This method mimics {@link String#startsWith(String)} but takes case-sensitivity into
* account.
*
* @param str the string to check, not null
* @param start the start to compare against, not null
* @return true if equal using the case rules
* @throws NullPointerException if either string is null
*/
public boolean checkStartsWith(String str, String start) {
return str.regionMatches(!sensitive, 0, start, 0, start.length());
}
/**
* Checks if one string ends with another using the case-sensitivity rule.
*
* <p>This method mimics {@link String#endsWith} but takes case-sensitivity into account.
*
* @param str the string to check, not null
* @param end the end to compare against, not null
* @return true if equal using the case rules
* @throws NullPointerException if either string is null
*/
public boolean checkEndsWith(String str, String end) {
int endLen = end.length();
return str.regionMatches(!sensitive, str.length() - endLen, end, 0, endLen);
}
/**
* Checks if one string contains another at a specific index using the case-sensitivity rule.
*
* <p>This method mimics parts of {@link String#regionMatches(boolean, int, String, int, int)} but
* takes case-sensitivity into account.
*
* @param str the string to check, not null
* @param strStartIndex the index to start at in str
* @param search the start to search for, not null
* @return true if equal using the case rules
* @throws NullPointerException if either string is null
*/
public boolean checkRegionMatches(String str, int strStartIndex, String search) {
return str.regionMatches(!sensitive, strStartIndex, search, 0, search.length());
}
/**
* Converts the case of the input String to a standard format. Subsequent operations can then use
* standard String methods.
*
* @param str the string to convert, null returns null
* @return the lower-case version if case-insensitive
*/
String convertCase(String str) {
if (str == null) {
return null;
}
return sensitive ? str : str.toLowerCase();
}
// -----------------------------------------------------------------------
/**
* Gets a string describing the sensitivity.
*
* @return a string describing the sensitivity
*/
public String toString() {
return name;
}
}
