91 public synchronized int read() {
92 return (pos < count) ? (buffer.charAt(pos++) & 0xFF) : -1;
93 }
94
95 /**
96 * Reads up to <code>len</code> bytes of data from this input stream
97 * into an array of bytes.
98 * <p>
99 * The <code>read</code> method of
100 * <code>StringBufferInputStream</code> cannot block. It copies the
101 * low eight bits from the characters in this input stream's buffer into
102 * the byte array argument.
103 *
104 * @param b the buffer into which the data is read.
105 * @param off the start offset of the data.
106 * @param len the maximum number of bytes read.
107 * @return the total number of bytes read into the buffer, or
108 * <code>-1</code> if there is no more data because the end of
109 * the stream has been reached.
110 */
111 public synchronized int read(byte b[], int off, int len) {
112 if (b == null) {
113 throw new NullPointerException();
114 } else if ((off < 0) || (off > b.length) || (len < 0) ||
115 ((off + len) > b.length) || ((off + len) < 0)) {
116 throw new IndexOutOfBoundsException();
117 }
118 if (pos >= count) {
119 return -1;
120 }
121
122 int avail = count - pos;
123 if (len > avail) {
124 len = avail;
125 }
126 if (len <= 0) {
127 return 0;
128 }
129 String s = buffer;
130 int cnt = len;
131 while (--cnt >= 0) {
132 b[off++] = (byte)s.charAt(pos++);
133 }
134
135 return len;
136 }
137
138 /**
139 * Skips <code>n</code> bytes of input from this input stream. Fewer
140 * bytes might be skipped if the end of the input stream is reached.
141 *
142 * @param n the number of bytes to be skipped.
143 * @return the actual number of bytes skipped.
144 */
145 public synchronized long skip(long n) {
146 if (n < 0) {
147 return 0;
148 }
149 if (n > count - pos) {
150 n = count - pos;
151 }
152 pos += n;
153 return n;
154 }
|
91 public synchronized int read() {
92 return (pos < count) ? (buffer.charAt(pos++) & 0xFF) : -1;
93 }
94
95 /**
96 * Reads up to <code>len</code> bytes of data from this input stream
97 * into an array of bytes.
98 * <p>
99 * The <code>read</code> method of
100 * <code>StringBufferInputStream</code> cannot block. It copies the
101 * low eight bits from the characters in this input stream's buffer into
102 * the byte array argument.
103 *
104 * @param b the buffer into which the data is read.
105 * @param off the start offset of the data.
106 * @param len the maximum number of bytes read.
107 * @return the total number of bytes read into the buffer, or
108 * <code>-1</code> if there is no more data because the end of
109 * the stream has been reached.
110 */
111 @SuppressWarnings("deprecation")
112 public synchronized int read(byte b[], int off, int len) {
113 if (b == null) {
114 throw new NullPointerException();
115 } else if ((off < 0) || (off > b.length) || (len < 0) ||
116 ((off + len) > b.length) || ((off + len) < 0)) {
117 throw new IndexOutOfBoundsException();
118 }
119 if (pos >= count) {
120 return -1;
121 }
122
123 int avail = count - pos;
124 if (len > avail) {
125 len = avail;
126 }
127 if (len <= 0) {
128 return 0;
129 }
130 buffer.getBytes(pos, pos + len, b, off);
131 pos += len;
132 return len;
133 }
134
135 /**
136 * Skips <code>n</code> bytes of input from this input stream. Fewer
137 * bytes might be skipped if the end of the input stream is reached.
138 *
139 * @param n the number of bytes to be skipped.
140 * @return the actual number of bytes skipped.
141 */
142 public synchronized long skip(long n) {
143 if (n < 0) {
144 return 0;
145 }
146 if (n > count - pos) {
147 n = count - pos;
148 }
149 pos += n;
150 return n;
151 }
|