001/* 002 * Copyright (C) 2009-2017 the original author(s). 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.fusesource.jansi; 017 018import java.io.ByteArrayOutputStream; 019import java.io.IOException; 020 021/** 022 * An ANSI string which reports the size of rendered text correctly (ignoring any ANSI escapes). 023 * 024 * @author <a href="mailto:jason@planet57.com">Jason Dillon</a> 025 * @since 1.1 026 */ 027public class AnsiString 028 implements CharSequence { 029 private final CharSequence encoded; 030 031 private final CharSequence plain; 032 033 public AnsiString(final CharSequence str) { 034 assert str != null; 035 this.encoded = str; 036 this.plain = chew(str); 037 } 038 039 private CharSequence chew(final CharSequence str) { 040 assert str != null; 041 042 ByteArrayOutputStream buff = new ByteArrayOutputStream(); 043 AnsiOutputStream out = new AnsiOutputStream(buff); 044 045 try { 046 out.write(str.toString().getBytes()); 047 out.flush(); 048 out.close(); 049 } catch (IOException e) { 050 throw new RuntimeException(e); 051 } 052 053 return new String(buff.toByteArray()); 054 } 055 056 public CharSequence getEncoded() { 057 return encoded; 058 } 059 060 public CharSequence getPlain() { 061 return plain; 062 } 063 064 // FIXME: charAt() and subSequence() will make things barf, need to call toString() first to get expected results 065 066 public char charAt(final int index) { 067 return getEncoded().charAt(index); 068 } 069 070 public CharSequence subSequence(final int start, final int end) { 071 return getEncoded().subSequence(start, end); 072 } 073 074 public int length() { 075 return getPlain().length(); 076 } 077 078 @Override 079 public boolean equals(final Object obj) { 080 return getEncoded().equals(obj); 081 } 082 083 @Override 084 public int hashCode() { 085 return getEncoded().hashCode(); 086 } 087 088 @Override 089 public String toString() { 090 return getEncoded().toString(); 091 } 092}