1 /*
2 * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
71 public InputStreamReader(InputStream in) {
72 super(in);
73 try {
74 sd = StreamDecoder.forInputStreamReader(in, this, (String)null); // ## check lock object
75 } catch (UnsupportedEncodingException e) {
76 // The default encoding should always be available
77 throw new Error(e);
78 }
79 }
80
81 /**
82 * Creates an InputStreamReader that uses the named charset.
83 *
84 * @param in
85 * An InputStream
86 *
87 * @param charsetName
88 * The name of a supported
89 * {@link java.nio.charset.Charset charset}
90 *
91 * @exception UnsupportedEncodingException
92 * If the named charset is not supported
93 */
94 public InputStreamReader(InputStream in, String charsetName)
95 throws UnsupportedEncodingException
96 {
97 super(in);
98 if (charsetName == null)
99 throw new NullPointerException("charsetName");
100 sd = StreamDecoder.forInputStreamReader(in, this, charsetName);
101 }
102
103 /**
104 * Creates an InputStreamReader that uses the given charset.
105 *
106 * @param in An InputStream
107 * @param cs A charset
108 *
109 * @since 1.4
110 * @spec JSR-51
111 */
145 * stream has been closed.
146 * </p>
147 * @return The historical name of this encoding, or
148 * <code>null</code> if the stream has been closed
149 *
150 * @see java.nio.charset.Charset
151 *
152 * @revised 1.4
153 * @spec JSR-51
154 */
155 public String getEncoding() {
156 return sd.getEncoding();
157 }
158
159 /**
160 * Reads a single character.
161 *
162 * @return The character read, or -1 if the end of the stream has been
163 * reached
164 *
165 * @exception IOException If an I/O error occurs
166 */
167 public int read() throws IOException {
168 return sd.read();
169 }
170
171 /**
172 * Reads characters into a portion of an array.
173 *
174 * @param cbuf Destination buffer
175 * @param offset Offset at which to start storing characters
176 * @param length Maximum number of characters to read
177 *
178 * @return The number of characters read, or -1 if the end of the
179 * stream has been reached
180 *
181 * @exception IOException If an I/O error occurs
182 * @exception IndexOutOfBoundsException {@inheritDoc}
183 */
184 public int read(char cbuf[], int offset, int length) throws IOException {
185 return sd.read(cbuf, offset, length);
186 }
187
188 /**
189 * Tells whether this stream is ready to be read. An InputStreamReader is
190 * ready if its input buffer is not empty, or if bytes are available to be
191 * read from the underlying byte stream.
192 *
193 * @exception IOException If an I/O error occurs
194 */
195 public boolean ready() throws IOException {
196 return sd.ready();
197 }
198
199 public void close() throws IOException {
200 sd.close();
201 }
202 }
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1 /*
2 * Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
71 public InputStreamReader(InputStream in) {
72 super(in);
73 try {
74 sd = StreamDecoder.forInputStreamReader(in, this, (String)null); // ## check lock object
75 } catch (UnsupportedEncodingException e) {
76 // The default encoding should always be available
77 throw new Error(e);
78 }
79 }
80
81 /**
82 * Creates an InputStreamReader that uses the named charset.
83 *
84 * @param in
85 * An InputStream
86 *
87 * @param charsetName
88 * The name of a supported
89 * {@link java.nio.charset.Charset charset}
90 *
91 * @throws UnsupportedEncodingException
92 * If the named charset is not supported
93 */
94 public InputStreamReader(InputStream in, String charsetName)
95 throws UnsupportedEncodingException
96 {
97 super(in);
98 if (charsetName == null)
99 throw new NullPointerException("charsetName");
100 sd = StreamDecoder.forInputStreamReader(in, this, charsetName);
101 }
102
103 /**
104 * Creates an InputStreamReader that uses the given charset.
105 *
106 * @param in An InputStream
107 * @param cs A charset
108 *
109 * @since 1.4
110 * @spec JSR-51
111 */
145 * stream has been closed.
146 * </p>
147 * @return The historical name of this encoding, or
148 * <code>null</code> if the stream has been closed
149 *
150 * @see java.nio.charset.Charset
151 *
152 * @revised 1.4
153 * @spec JSR-51
154 */
155 public String getEncoding() {
156 return sd.getEncoding();
157 }
158
159 /**
160 * Reads a single character.
161 *
162 * @return The character read, or -1 if the end of the stream has been
163 * reached
164 *
165 * @throws IOException If an I/O error occurs
166 */
167 public int read() throws IOException {
168 return sd.read();
169 }
170
171 /**
172 * Reads characters into a portion of an array.
173 *
174 * @param cbuf Destination buffer
175 * @param offset Offset at which to start storing characters
176 * @param length Maximum number of characters to read
177 *
178 * @return The number of characters read, or -1 if the end of the
179 * stream has been reached
180 *
181 * @throws IOException If an I/O error occurs
182 * @throws IndexOutOfBoundsException {@inheritDoc}
183 */
184 public int read(char cbuf[], int offset, int length) throws IOException {
185 return sd.read(cbuf, offset, length);
186 }
187
188 /**
189 * Tells whether this stream is ready to be read. An InputStreamReader is
190 * ready if its input buffer is not empty, or if bytes are available to be
191 * read from the underlying byte stream.
192 *
193 * @throws IOException If an I/O error occurs
194 */
195 public boolean ready() throws IOException {
196 return sd.ready();
197 }
198
199 public void close() throws IOException {
200 sd.close();
201 }
202 }
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