Java Utililty Methods Text File Read by Charset

List of utility methods to do Text File Read by Charset

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Description

The list of methods to do Text File Read by Charset are organized into topic(s).

Method

ReaderasReader(InputStream input, Charset charset)
Convenient method to read a byte stream as a character stream. 
return new InputStreamReader(input, charset);
voidconvert(File file, Charset from, String toEncoding, ByteArrayOutputStream bytearray, boolean headersOn, int totalLinesToRead)
convert 
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), from));
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(bytearray, toEncoding));
for (int c = 0; c < totalLinesToRead; c++) {
    String tmpline = reader.readLine();
    if (tmpline == null)
        break;
    writer.write(tmpline, 0, tmpline.length());
    writer.write("\n", 0, 1);
...
voidcopy(Reader input, OutputStream output, Charset encoding)
copy 
OutputStreamWriter out = new OutputStreamWriter(output, encoding);
copyLarge(input, out, new char[DEFAULT_BUFFER_SIZE]);
out.flush();
ReadercreateBOMStrippedReader(InputStream stream, String defaultCharset)
Create BOM stripped reader from the stream. 
InputStream in = stream.markSupported() ? stream : new BufferedInputStream(stream);
String charset = null;
in.mark(3);
byte[] head = new byte[3];
int br = in.read(head, 0, 3);
if (br >= 2 && (head[0] == (byte) 0xFE && head[1] == (byte) 0xFF)
        || (head[0] == (byte) 0xFF && head[1] == (byte) 0xFE)) {
    charset = "UTF-16";
...
BufferedReadercreateBufferedReaderWithGuessedCharset(File file)
Guess the file's character set and create BufferedReader 
return createBufferedReaderWithGuessedCharset(file, "UTF-8");
InputStreamReadercreateInputStreamReader(File file, String charsetName)
create Input Stream Reader 
Charset charset = charsetName == null ? Charset.defaultCharset() : Charset.forName(charsetName);
return createInputStreamReader(file, charset);
ReadercreateReader(Path p, Charset cs)
create Reader 
InputStream is = Files.newInputStream(p);
InputStream gis;
if (p.toString().endsWith(".gz"))
    gis = new GZIPInputStream(is);
else
    gis = is;
Reader r = new InputStreamReader(gis, cs);
return r;
...
CharsetDecodergetDecoder(Charset charset, ThreadLocal> localDecoder)
get Decoder 
Reference<CharsetDecoder> ref = localDecoder.get();
CharsetDecoder decoder;
return ref != null && (decoder = ref.get()) != null && decoder.charset() == charset ? decoder
        : initDecoder(charset, localDecoder);
StringgetFileContent(IFile file, String charset)
Returns the file content as UTF8 string. 
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
InputStream in = null;
try {
    in = file.getContents(true);
    byte[] buf = new byte[8000];
    for (int count; (count = in.read(buf)) != -1;)
        outputStream.write(buf, 0, count);
} catch (Exception e) {
...
InputStreamReadergetInputStreamReader(InputStream stream, Charset charset)
get Input Stream Reader 
return new InputStreamReader(stream, charset);