geronimo-servlet_3.1_spec/src/main/java/javax/servlet/http/HttpUtils.java [145:190]:
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    static public Hashtable<String, String[]> parsePostData(int len,
                                                            ServletInputStream in) {
        // XXX
        // should a length of 0 be an IllegalArgumentException

        if (len <= 0)
            return new Hashtable<String, String[]>(); // cheap hack to return an empty hash

        if (in == null) {
            throw new IllegalArgumentException();
        }

        //
        // Make sure we read the entire POSTed body.
        //
        byte[] postedBytes = new byte[len];
        try {
            int offset = 0;

            do {
                int inputLen = in.read(postedBytes, offset, len - offset);
                if (inputLen <= 0) {
                    String msg = lStrings.getString("err.io.short_read");
                    throw new IllegalArgumentException(msg);
                }
                offset += inputLen;
            } while ((len - offset) > 0);

        } catch (IOException e) {
            throw new IllegalArgumentException(e.getMessage());
        }

        // XXX we shouldn't assume that the only kind of POST body
        // is FORM data encoded using ASCII or ISO Latin/1 ... or
        // that the body should always be treated as FORM data.
        //

        try {
            String postedBody = new String(postedBytes, 0, len, "8859_1");
            return parseQueryString(postedBody);
        } catch (java.io.UnsupportedEncodingException e) {
            // XXX function should accept an encoding parameter & throw this
            // exception.  Otherwise throw something expected.
            throw new IllegalArgumentException(e.getMessage());
        }
    }
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geronimo-servlet_3.0_spec/src/main/java/javax/servlet/http/HttpUtils.java [145:190]:
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    static public Hashtable<String, String[]> parsePostData(int len,
                                                            ServletInputStream in) {
        // XXX
        // should a length of 0 be an IllegalArgumentException

        if (len <= 0)
            return new Hashtable<String, String[]>(); // cheap hack to return an empty hash

        if (in == null) {
            throw new IllegalArgumentException();
        }

        //
        // Make sure we read the entire POSTed body.
        //
        byte[] postedBytes = new byte[len];
        try {
            int offset = 0;

            do {
                int inputLen = in.read(postedBytes, offset, len - offset);
                if (inputLen <= 0) {
                    String msg = lStrings.getString("err.io.short_read");
                    throw new IllegalArgumentException(msg);
                }
                offset += inputLen;
            } while ((len - offset) > 0);

        } catch (IOException e) {
            throw new IllegalArgumentException(e.getMessage());
        }

        // XXX we shouldn't assume that the only kind of POST body
        // is FORM data encoded using ASCII or ISO Latin/1 ... or
        // that the body should always be treated as FORM data.
        //

        try {
            String postedBody = new String(postedBytes, 0, len, "8859_1");
            return parseQueryString(postedBody);
        } catch (java.io.UnsupportedEncodingException e) {
            // XXX function should accept an encoding parameter & throw this
            // exception.  Otherwise throw something expected.
            throw new IllegalArgumentException(e.getMessage());
        }
    }
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