Example usage for java.nio.charset CodingErrorAction REPORT

Introduction

In this page you can find the example usage for java.nio.charset CodingErrorAction REPORT.

Prototype

CodingErrorAction REPORT

To view the source code for java.nio.charset CodingErrorAction REPORT.

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Document

Action indicating that a coding error is to be reported, either by returning a CoderResult object or by throwing a CharacterCodingException , whichever is appropriate for the method implementing the coding process.

Usage

From source file:org.nuxeo.ecm.platform.filemanager.service.extension.NoteImporter.java

protected static String guessEncoding(Blob blob) throws IOException {
    // encoding already known?
    if (blob.getEncoding() != null) {
        return null;
    }//from   w w w .j  a v  a  2 s  .c  om

    // bad mime type?
    String mimeType = blob.getMimeType();
    if (mimeType == null) {
        return null;
    }
    if (!mimeType.startsWith("text/") && !mimeType.startsWith("application/xhtml")) {
        // not a text file, we shouldn't be in the Note importer
        return null;
    }

    byte[] bytes = blob.getByteArray();

    List<String> charsets = new ArrayList<>(Arrays.asList("utf-8", "iso-8859-1"));

    String CSEQ = "charset=";
    int i = mimeType.indexOf(CSEQ);
    if (i > 0) {
        // charset specified in MIME type
        String onlyMimeType = mimeType.substring(0, i).replace(";", "").trim();
        blob.setMimeType(onlyMimeType);
        String charset = mimeType.substring(i + CSEQ.length());
        i = charset.indexOf(";");
        if (i > 0) {
            charset = charset.substring(0, i);
        }
        charset = charset.trim().replace("\"", "");
        charsets.add(0, charset);
    } else {
        // charset detected from the actual bytes
        CharsetMatch charsetMatch = new CharsetDetector().setText(bytes).detect();
        if (charsetMatch != null) {
            String charset = charsetMatch.getName();
            charsets.add(0, charset);
        }
    }

    // now convert the string according to the charset, and fallback on others if not possible
    for (String charset : charsets) {
        try {
            Charset cs = Charset.forName(charset);
            CharsetDecoder d = cs.newDecoder().onMalformedInput(CodingErrorAction.REPORT)
                    .onUnmappableCharacter(CodingErrorAction.REPORT);
            CharBuffer cb = d.decode(ByteBuffer.wrap(bytes));
            if (cb.length() != 0 && cb.charAt(0) == '\ufeff') {
                // remove BOM
                cb = cb.subSequence(1, cb.length());
            }
            return cb.toString();
        } catch (IllegalArgumentException e) {
            // illegal charset
        } catch (CharacterCodingException e) {
            // could not decode
        }
    }
    // nothing worked, use platform
    return null;
}

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From source file:org.rapla.rest.gwtjsonrpc.server.JsonServlet.java

private String readBody(final ActiveCall call) throws IOException {
    if (!isBodyJson(call)) {
        throw new JsonParseException("Invalid Request Content-Type");
    }/*from ww  w.j  av a2s  .  c  om*/
    if (!isBodyUTF8(call)) {
        throw new JsonParseException("Invalid Request Character-Encoding");
    }

    final int len = call.httpRequest.getContentLength();
    if (len < 0) {
        throw new JsonParseException("Invalid Request Content-Length");
    }
    if (len == 0) {
        throw new JsonParseException("Invalid Request POST Body Required");
    }
    if (len > maxRequestSize()) {
        throw new JsonParseException("Invalid Request POST Body Too Large");
    }

    final InputStream in = call.httpRequest.getInputStream();
    if (in == null) {
        throw new JsonParseException("Invalid Request POST Body Required");
    }

    try {
        final byte[] body = new byte[len];
        int off = 0;
        while (off < len) {
            final int n = in.read(body, off, len - off);
            if (n <= 0) {
                throw new JsonParseException("Invalid Request Incomplete Body");
            }
            off += n;
        }

        final CharsetDecoder d = Charset.forName(JsonConstants.JSON_ENC).newDecoder();
        d.onMalformedInput(CodingErrorAction.REPORT);
        d.onUnmappableCharacter(CodingErrorAction.REPORT);
        try {
            ByteBuffer wrap = ByteBuffer.wrap(body);
            CharBuffer decode = d.decode(wrap);
            return decode.toString();
        } catch (CharacterCodingException e) {
            throw new JsonParseException("Invalid Request Not UTF-8", e);
        }
    } finally {
        in.close();
    }
}

---

From source file:org.rapla.server.jsonrpc.JsonServlet.java

private String readBody(final ActiveCall call) throws IOException {
    if (!isBodyJson(call)) {
        throw new JsonParseException("Invalid Request Content-Type");
    }/*from w  w w. j a  v  a2s . c o m*/
    if (!isBodyUTF8(call)) {
        throw new JsonParseException("Invalid Request Character-Encoding");
    }

    final int len = call.httpRequest.getContentLength();
    if (len < 0) {
        throw new JsonParseException("Invalid Request Content-Length");
    }
    if (len == 0) {
        throw new JsonParseException("Invalid Request POST Body Required");
    }
    if (len > maxRequestSize()) {
        throw new JsonParseException("Invalid Request POST Body Too Large");
    }

    final InputStream in = call.httpRequest.getInputStream();
    if (in == null) {
        throw new JsonParseException("Invalid Request POST Body Required");
    }

    try {
        final byte[] body = new byte[len];
        int off = 0;
        while (off < len) {
            final int n = in.read(body, off, len - off);
            if (n <= 0) {
                throw new JsonParseException("Invalid Request Incomplete Body");
            }
            off += n;
        }

        final CharsetDecoder d = Charset.forName(JsonConstants.JSON_ENC).newDecoder();
        d.onMalformedInput(CodingErrorAction.REPORT);
        d.onUnmappableCharacter(CodingErrorAction.REPORT);
        try {
            return d.decode(ByteBuffer.wrap(body)).toString();
        } catch (CharacterCodingException e) {
            throw new JsonParseException("Invalid Request Not UTF-8", e);
        }
    } finally {
        in.close();
    }
}

---

From source file:org.sonar.scanner.scan.filesystem.CharsetValidationTest.java

private byte[] encode(String txt, Charset charset) throws CharacterCodingException {
    CharsetEncoder encoder = charset.newEncoder().onMalformedInput(CodingErrorAction.REPORT)
            .onUnmappableCharacter(CodingErrorAction.REPORT);
    ByteBuffer encoded = encoder.encode(CharBuffer.wrap(txt));
    byte[] b = new byte[encoded.remaining()];
    encoded.get(b);/*  ww  w  .j  av  a2s .c  o m*/
    return b;
}

---

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