Examples with FileExistsException uk.me.parabola.imgfmt.FileExistsException used on opensource projects

Example 11 with FileExistsException

use of uk.me.parabola.imgfmt.FileExistsException in project mkgmap by openstreetmap.

the class ImgFS method open.

/**
 * Open a file.  The returned file object can be used to read and write the
 * underlying file.
 *
 * @param name The file name to open.
 * @param mode Either "r" for read access, "w" for write access or "rw"
 *             for both read and write.
 * @return A file descriptor.
 * @throws FileNotFoundException When the file does not exist.
 */
public ImgChannel open(String name, String mode) throws FileNotFoundException {
    if (name == null || mode == null)
        throw new IllegalArgumentException("null argument");
    if (mode.indexOf('r') >= 0) {
        Dirent ent = internalLookup(name);
        FileNode fn = new FileNode(file, ent, "r");
        if (xorByte != 0)
            fn.setXorByte(xorByte);
        return fn;
    } else if (mode.indexOf('w') >= 0) {
        Dirent ent;
        try {
            ent = internalLookup(name);
        } catch (FileNotFoundException e) {
            try {
                ent = directory.create(name, fileBlockManager);
            } catch (FileExistsException e1) {
                // This shouldn't happen as we have just checked.
                throw new FileNotFoundException("Attempt to duplicate a file name");
            }
        }
        FileNode node = new FileNode(file, ent, "w");
        openNodes.add(node);
        return node;
    } else {
        throw new IllegalArgumentException("Invalid mode given");
    }
}