// update the modified time of the given file, or create it
public static void touch(java.io.File file) throws ServiceException {
if (file.exists()) {
file.setLastModified((new java.util.Date()).getTime());
} else {
create(file);
}
}
// creates a new, empty file; if file is null, a temporary file is created
public static java.io.File create(java.io.File file) throws ServiceException {
try {
if (file == null) {
file = java.io.File.createTempFile("tundra", null);
} else {
java.io.File parent = file.getParentFile();
if (parent != null) parent.mkdirs(); // automatically create directories if required
if (!file.createNewFile())
tundra.exception.raise(
"Unable to create file because it already exists: "
+ tundra.support.file.normalize(file));
}
} catch (java.io.IOException ex) {
tundra.exception.raise(ex);
}
return file;
}
// renames a file
public static void rename(java.io.File source, java.io.File target) throws ServiceException {
if (source != null && target != null) {
if (!exists(source) || exists(target) || !source.renameTo(target)) {
tundra.exception.raise(
"Unable to rename file "
+ tundra.support.file.normalize(source)
+ " to "
+ tundra.support.file.normalize(target));
}
}
}
// deletes a file
public static void remove(java.io.File file) throws ServiceException {
if (file != null && exists(file) && !file.delete()) {
tundra.exception.raise("Unable to remove file: " + tundra.support.file.normalize(file));
}
}
// returns the length of the given file in bytes
public static long length(java.io.File file) throws ServiceException {
return file == null ? 0 : file.length();
}
// returns whether the given file can be executed by this process
public static boolean executable(java.io.File file) throws ServiceException {
return file == null ? false : file.canExecute();
}
// returns whether the given file can be read by this process
public static boolean readable(java.io.File file) throws ServiceException {
return file == null ? false : file.canRead();
}
// returns whether the given file exists
public static boolean exists(java.io.File file) throws ServiceException {
return file == null ? false : file.exists() && file.isFile();
}
// --- <<IS-START-SHARED>> ---
// returns the mime type for the given file
public static String type(java.io.File file) throws ServiceException {
String type = null;
if (file != null) type = com.wm.app.b2b.server.MimeTypes.getTypeFromName(file.getName());
if (type == null) type = "application/octet-stream";
return type;
}