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Core functionality for GeoPackage implementations
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package mil.nga.geopackage.io;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.DecimalFormat;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Input / Output utility methods
*
* @author osbornb
*/
public class GeoPackageIOUtils {
/**
* Logger
*/
private static final Logger logger = Logger
.getLogger(GeoPackageIOUtils.class.getName());
/**
* Copy stream buffer chunk size in bytes
*
* @since 3.3.0
*/
public static int COPY_BUFFER_SIZE = 8192;
/**
* Get the file extension
*
* @param file
* file
* @return extension
*/
public static String getFileExtension(File file) {
return getFileExtension(file.getName());
}
/**
* Get the file extension
*
* @param name
* name
* @return extension
* @since 3.5.0
*/
public static String getFileExtension(String name) {
String extension = null;
int extensionIndex = name.lastIndexOf(".");
if (extensionIndex > -1) {
extension = name.substring(extensionIndex + 1);
}
return extension;
}
/**
* Check if the file has an extension
*
* @param file
* file
* @return true if has extension
* @since 3.0.2
*/
public static boolean hasFileExtension(File file) {
return getFileExtension(file) != null;
}
/**
* Check if the name has an extension
*
* @param name
* name
* @return true if has extension
* @since 3.5.0
*/
public static boolean hasFileExtension(String name) {
return getFileExtension(name) != null;
}
/**
* Add a the file extension to the file
*
* @param file
* file
* @param extension
* file extension
* @return new file with extension
* @since 3.0.2
*/
public static File addFileExtension(File file, String extension) {
return new File(addFileExtension(file.getAbsolutePath(), extension));
}
/**
* Add a the file extension to the name
*
* @param name
* name
* @param extension
* file extension
* @return new name with extension
* @since 3.5.0
*/
public static String addFileExtension(String name, String extension) {
return name + "." + extension;
}
/**
* Get the file name with the extension removed
*
* @param file
* file
* @return file name
*/
public static String getFileNameWithoutExtension(File file) {
return getFileNameWithoutExtension(file.getName());
}
/**
* Get the file name with the extension removed
*
* @param name
* name
* @return file name
* @since 3.5.0
*/
public static String getFileNameWithoutExtension(String name) {
int extensionIndex = name.lastIndexOf(".");
if (extensionIndex > -1) {
name = name.substring(0, extensionIndex);
}
return name;
}
/**
* Get the path file name
*
* @param path
* file path
* @return file name
* @since 6.2.0
*/
public static String getPathFileName(String path) {
return new File(path).getName();
}
/**
* Get the path file name
*
* @param path
* file path
* @return file name
* @since 6.2.0
*/
public static String getPathFileNameWithoutExtension(String path) {
return getFileNameWithoutExtension(getPathFileName(path));
}
/**
* Copy a file to a file location
*
* @param copyFrom
* from file
* @param copyTo
* to file
* @throws IOException
* upon failure
*/
public static void copyFile(File copyFrom, File copyTo) throws IOException {
copyFile(copyFrom, copyTo, null);
}
/**
* Copy a file to a file location
*
* @param copyFrom
* from file
* @param copyTo
* to file
* @param progress
* progress tracker
* @throws IOException
* upon failure
* @since 5.0.0
*/
public static void copyFile(File copyFrom, File copyTo,
GeoPackageProgress progress) throws IOException {
OutputStream to = new FileOutputStream(copyTo);
copyFile(copyFrom, to, progress);
}
/**
* Copy a file to an output stream
*
* @param copyFrom
* from file
* @param copyTo
* to stream
* @throws IOException
* upon failure
* @since 5.0.0
*/
public static void copyFile(File copyFrom, OutputStream copyTo)
throws IOException {
copyFile(copyFrom, copyTo, null);
}
/**
* Copy a file to an output stream
*
* @param copyFrom
* from file
* @param copyTo
* to stream
* @param progress
* progress tracker
* @throws IOException
* upon failure
* @since 5.0.0
*/
public static void copyFile(File copyFrom, OutputStream copyTo,
GeoPackageProgress progress) throws IOException {
InputStream from = new FileInputStream(copyFrom);
copyStream(from, copyTo, progress);
}
/**
* Copy an input stream to a file location
*
* @param copyFrom
* from file
* @param copyTo
* to file
* @throws IOException
* upon failure
*/
public static void copyStream(InputStream copyFrom, File copyTo)
throws IOException {
copyStream(copyFrom, copyTo, null);
}
/**
* Copy an input stream to a file location
*
* @param copyFrom
* from file
* @param copyTo
* to file
* @param progress
* progress tracker
* @throws IOException
* upon failure
*/
public static void copyStream(InputStream copyFrom, File copyTo,
GeoPackageProgress progress) throws IOException {
OutputStream to = new FileOutputStream(copyTo);
copyStream(copyFrom, to, progress);
// Try to delete the file if progress was canceled
if (progress != null && !progress.isActive()
&& progress.cleanupOnCancel()) {
copyTo.delete();
}
}
/**
* Get the file bytes
*
* @param file
* input file
* @return file bytes
* @throws IOException
* upon failure
*/
public static byte[] fileBytes(File file) throws IOException {
FileInputStream fis = new FileInputStream(file);
return streamBytes(fis);
}
/**
* Get the file string
*
* @param file
* input file
* @return file string
* @throws IOException
* upon failure
* @since 6.6.0
*/
public static String fileString(File file) throws IOException {
FileInputStream fis = new FileInputStream(file);
return streamString(fis);
}
/**
* Get the file string
*
* @param file
* input file
* @param charsetName
* character set name
* @return file string
* @throws IOException
* upon failure
* @since 6.6.0
*/
public static String fileString(File file, String charsetName)
throws IOException {
FileInputStream fis = new FileInputStream(file);
return streamString(fis, charsetName);
}
/**
* Get the stream bytes
*
* @param stream
* input stream
* @return stream bytes
* @throws IOException
* upon failure
*/
public static byte[] streamBytes(InputStream stream) throws IOException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
copyStream(stream, bytes);
return bytes.toByteArray();
}
/**
* Get the stream string in UTF-8
*
* @param stream
* input stream
* @return stream string
* @throws IOException
* upon failure
* @since 3.3.0
*/
public static String streamString(InputStream stream) throws IOException {
return streamString(stream, "UTF-8");
}
/**
* Get the stream string
*
* @param stream
* input stream
* @param charsetName
* character set name
* @return stream string
* @throws IOException
* upon failure
* @since 3.3.0
*/
public static String streamString(InputStream stream, String charsetName)
throws IOException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
copyStream(stream, bytes);
return bytes.toString(charsetName);
}
/**
* Copy an input stream to an output stream
*
* @param copyFrom
* from stream
* @param copyTo
* to stream
* @throws IOException
* upon failure
*/
public static void copyStream(InputStream copyFrom, OutputStream copyTo)
throws IOException {
copyStream(copyFrom, copyTo, null);
}
/**
* Copy an input stream to an output stream
*
* @param copyFrom
* from stream
* @param copyTo
* to stream
* @param progress
* progress tracker
* @throws IOException
* upon failure
*/
public static void copyStream(InputStream copyFrom, OutputStream copyTo,
GeoPackageProgress progress) throws IOException {
try {
byte[] buffer = new byte[COPY_BUFFER_SIZE];
int length;
while ((progress == null || progress.isActive())
&& (length = copyFrom.read(buffer)) > 0) {
copyTo.write(buffer, 0, length);
if (progress != null) {
progress.addProgress(length);
}
}
copyTo.flush();
} finally {
closeQuietly(copyTo);
closeQuietly(copyFrom);
}
}
/**
* Format the bytes into readable text
*
* @param bytes
* bytes
* @return bytes text
*/
public static String formatBytes(long bytes) {
double value = bytes;
String unit = "B";
if (bytes >= 1024) {
int exponent = (int) (Math.log(bytes) / Math.log(1024));
exponent = Math.min(exponent, 4);
switch (exponent) {
case 1:
unit = "KB";
break;
case 2:
unit = "MB";
break;
case 3:
unit = "GB";
break;
case 4:
unit = "TB";
break;
}
value = bytes / Math.pow(1024, exponent);
}
DecimalFormat df = new DecimalFormat("#.##");
return df.format(value) + " " + unit;
}
/**
* Close the closeable quietly
*
* @param closeable
* closeable (stream, etc)
* @since 2.0.2
*/
public static void closeQuietly(Closeable closeable) {
try {
closeable.close();
} catch (IOException e) {
logger.log(Level.WARNING, "Failed to close closeable", e);
}
}
}