| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.sanselan.formats.pnm; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| class WhiteSpaceReader |
| { |
| private final InputStream is; |
| |
| public WhiteSpaceReader(InputStream is) |
| { |
| this.is = is; |
| } |
| |
| int count = 0; |
| |
| private char read() throws IOException |
| { |
| int result = is.read(); |
| if (result < 0) |
| throw new IOException("PNM: Unexpected EOF"); |
| return (char) result; |
| } |
| |
| public char nextChar() throws IOException |
| { |
| char c = read(); |
| |
| if (c == '#') |
| { |
| while ((c != '\n') && (c != '\r')) |
| { |
| c = read(); |
| } |
| } |
| return c; |
| } |
| |
| public String readtoWhiteSpace() throws IOException |
| { |
| char c = nextChar(); |
| |
| while (Character.isWhitespace(c)) |
| c = nextChar(); |
| |
| StringBuffer buffer = new StringBuffer(); |
| |
| while (!Character.isWhitespace(c)) |
| { |
| buffer.append(c); |
| c = nextChar(); |
| } |
| |
| return buffer.toString(); |
| } |
| } |