001    /*
002     * Copyright (c) 2009 The openGion Project.
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,
013     * either express or implied. See the License for the specific language
014     * governing permissions and limitations under the License.
015     */
016    package org.opengion.fukurou.util;
017    
018    import java.util.Arrays ;
019    
020    /**
021     * ToString.java 縺ｯ縲∝?騾夂噪縺ｫ菴ｿ逕ｨ縺輔ｌ繧?toString() 繧堤ｰ｡邏?喧縺吶ｋ繧ｯ繝ｩ繧ｹ縺ｧ縺吶?
022     * 繝?ヰ繝?げ諠??繧貞?蜉帙☆繧区怙繧ゆｸ?握逧?↑譁ｹ豕輔?縲∝?驛ｨ譁?ｭ怜?縺ｮ蜃ｺ蜉帙〒縺吶?
023     * 騾壼ｸｸ縲√く繝ｼ縺ｨ蛟､繧偵?繧｢縺ｧ險倩ｿｰ縺吶ｋ縺溘ａ縲ヾtringBuilder 縺ｧ append 縺励↑縺後ｉ菴懈?縺吶ｋ縺ｫ縺励※繧?
024     * 繧ｳ繝ｼ繝?ぅ繝ｳ繧ｰ逧?↓縺ゅ∪繧願ｦ区?縺医?濶ｯ縺?ｽ｢縺ｫ縺ｯ縺ｪ繧翫∪縺帙ｓ縲?
025     * 縺薙％縺ｧ縺ｯ縲√◎繧後ｉ繧堤ｰ｡譏鍋噪縺ｫ謨ｴ蠖｢縺励※蜃ｺ蜉帙〒縺阪ｋ繧医≧縺ｫ縲√Γ繧ｽ繝?ラ繧堤畑諢上＠縺ｾ縺励◆縲?
026     *
027     * @og.group 繝ｦ繝ｼ繝?ぅ繝ｪ繝?ぅ
028     *
029     * @version  4.0
030     * @author       Kazuhiko Hasegawa
031     * @since    JDK5.0,
032     */
033    public final class ToString {
034    
035            /** 繧ｷ繧ｹ繝?Β萓晏ｭ倥?謾ｹ陦瑚ｨ伜捷繧偵そ繝?ヨ縺励∪縺吶?     */
036            private static final String CR = System.getProperty("line.separator");
037    
038            /** ?斐▽蛻??繧ｹ繝壹?繧ｹ縺ｧ縺吶?  */
039            private static final String SPACE = "    " ;
040            /** ?薙▽蛻??繧ｫ繝ｳ繝槭〒縺吶?    */
041            private static final String COMMA = " , " ;
042    
043            private final StringBuilder buf ;
044    
045            /** 譛?ｾ後↓謾ｹ陦瑚ｨ伜捷繧貞?繧後◆縺九←縺?°縲?*/
046            private boolean lastCR = true ;
047    
048            /** 繧ｭ繝ｼ譁?ｭ怜?縺ｮ譛?､ｧ髟ｷ(縺吶∋縺ｦASCII謠帷ｮ?    */
049            private int maxSize = 0;
050    
051            /**
052             * 繧ｿ繧､繝医Ν繧呈欠螳壹☆繧九さ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ繝ｼ
053             * 繧ｿ繧､繝医Ν縺ｯ縲∝?鬆ｭ縺ｫ繧ｹ繝壹?繧ｹ縺ｪ縺励〒蜈･繧後∪縺吶?譛?ｾ後?謾ｹ陦後≠繧翫〒縺吶?
054             *
055             * @param title 繧ｿ繧､繝医Ν譁?ｭ怜?
056             */
057            public ToString( final String title ) {
058                    buf = new StringBuilder( 200 );
059                    buf.append( "TITLE = [" ).append( title ).append( "]" ).append( CR );
060                    lastCR = true ;
061            }
062    
063            /**
064             * 邁｡譏鍋噪縺ｫ繧ｪ繝悶ず繧ｧ繧ｯ繝医ｒ讒狗ｯ峨☆繧?static 繝｡繧ｽ繝?ラ
065             * 繧ｿ繧､繝医Ν縺ｯ縲∝?鬆ｭ縺ｫ繧ｹ繝壹?繧ｹ縺ｪ縺励〒蜈･繧後∪縺吶?譛?ｾ後?謾ｹ陦後≠繧翫〒縺吶?
066             *
067             * @param       title 繧ｿ繧､繝医Ν譁?ｭ怜?
068             *
069             * @return      ToString繧ｪ繝悶ず繧ｧ繧ｯ繝?
070             */
071            public static ToString title( final String title ) {
072                    return new ToString( title );
073            }
074    
075            /**
076             * 謾ｹ陦後↑縺励?繧ｭ繝ｼ縺ｨ蛟､縺ｮ繝壹い繧定ｨｭ螳壹＠縺ｾ縺吶?
077             * 蜑榊屓縲∵隼陦後〒邨ゅｏ縺｣縺ｦ縺?ｋ蝣ｴ蜷医?縲√く繝ｼ縺九ｉ蟋九ａ縺ｾ縺吶?
078             * 縺昴≧縺ｧ縺ｪ縺??蜷医?" , " 繧貞?蜉帙＠縺ｦ縺九ｉ縲∵嶌縺榊ｧ九ａ縺ｾ縺吶?
079             *
080             * @param       key     繧ｭ繝ｼ譁?ｭ怜?
081             * @param       val     蛟､譁?ｭ怜?
082             *
083             * @return      閾ｪ蛻??霄ｫ
084             */
085            public ToString print( final String key,final Object val ) {
086                    if( lastCR ) {  buf.append( SPACE ); }
087                    else {                  buf.append( COMMA ); }
088                    lastCR = false;
089    
090                    if( key != null ) {
091                            int len = key.length();
092                            if( len > maxSize ) { maxSize = len; }
093                            buf.append( key ).append( " = [" ).append( String.valueOf( val ) ).append( "]" );
094                    }
095                    else {
096                            buf.append( "   [" ).append( String.valueOf( val ) ).append( "]" );
097                    }
098    
099                    return this ;
100            }
101    
102            /**
103             * 謾ｹ陦後≠繧翫?繧ｭ繝ｼ縺ｨ蛟､縺ｮ繝壹い繧定ｨｭ螳壹＠縺ｾ縺吶?
104             * 蜑榊屓縲∵隼陦後〒邨ゅｏ縺｣縺ｦ縺?ｋ蝣ｴ蜷医?縲√く繝ｼ縺九ｉ蟋九ａ縺ｾ縺吶?
105             * 縺昴≧縺ｧ縺ｪ縺??蜷医?" , " 繧貞?蜉帙＠縺ｦ縺九ｉ縲∵嶌縺榊ｧ九ａ縺ｾ縺吶?
106             *
107             * @param       key     繧ｭ繝ｼ譁?ｭ怜?
108             * @param       val     蛟､譁?ｭ怜?
109             *
110             * @return      閾ｪ蛻??霄ｫ
111             */
112            public ToString println( final String key,final Object val ) {
113                    print( key,val );
114    
115                    buf.append( CR );
116                    lastCR = true;
117                    return this ;
118            }
119    
120            /**
121             * 謾ｹ陦後↑縺励?繧ｭ繝ｼ縺ｨ蛟､驟榊?縺ｮ繝壹い繧定ｨｭ螳壹＠縺ｾ縺吶?
122             * 蜑榊屓縲∵隼陦後〒邨ゅｏ縺｣縺ｦ縺?ｋ蝣ｴ蜷医?縲√く繝ｼ縺九ｉ蟋九ａ縺ｾ縺吶?
123             * 縺昴≧縺ｧ縺ｪ縺??蜷医?" , " 繧貞?蜉帙＠縺ｦ縺九ｉ縲∵嶌縺榊ｧ九ａ縺ｾ縺吶?
124             *
125             * @param       key     繧ｭ繝ｼ譁?ｭ怜?
126             * @param       val     蛟､驟榊?
127             *
128             * @return      閾ｪ蛻??霄ｫ
129             */
130            public ToString print( final String key,final Object[] val ) {
131                    String str = Arrays.toString( val );
132                    return print( key,str.substring( 1,str.length()-1 ) );
133            }
134    
135            /**
136             * 謾ｹ陦後≠繧翫?繧ｭ繝ｼ縺ｨ蛟､驟榊?縺ｮ繝壹い繧定ｨｭ螳壹＠縺ｾ縺吶?
137             * 蜑榊屓縲∵隼陦後〒邨ゅｏ縺｣縺ｦ縺?ｋ蝣ｴ蜷医?縲√く繝ｼ縺九ｉ蟋九ａ縺ｾ縺吶?
138             * 縺昴≧縺ｧ縺ｪ縺??蜷医?" , " 繧貞?蜉帙＠縺ｦ縺九ｉ縲∵嶌縺榊ｧ九ａ縺ｾ縺吶?
139             *
140             * @param       key     繧ｭ繝ｼ譁?ｭ怜?
141             * @param       val     蛟､驟榊?
142             *
143             * @return      閾ｪ蛻??霄ｫ
144             */
145            public ToString println( final String key,final Object[] val ) {
146                    String str = Arrays.toString( val );
147                    return println( key,str.substring( 1,str.length()-1 ) );
148            }
149    
150            /**
151             * 謾ｹ陦後?縺ｿ險ｭ螳壹＠縺ｾ縺吶?
152             *
153             * @return      閾ｪ蛻??霄ｫ
154             */
155            public ToString println() {
156                    buf.append( CR );
157                    lastCR = true;
158                    return this;
159            }
160    
161            /**
162             * 謾ｹ陦御ｻ倥″縺ｮ蛟､縺ｮ縺ｿ險ｭ螳壹＠縺ｾ縺吶?
163             *
164             * @param       val     蛟､
165             *
166             * @return      閾ｪ蛻??霄ｫ
167             */
168            public ToString println( final Object val ) {
169                    return println( null,val );
170            }
171    
172            /**
173             * 謾ｹ陦御ｻ倥″縺ｮ蛟､縺ｮ縺ｿ險ｭ螳壹＠縺ｾ縺吶?
174             *
175             * @param       val     蛟､
176             *
177             * @return      閾ｪ蛻??霄ｫ
178             */
179            public ToString println( final Object[] val ) {
180                    String str = Arrays.toString( val );
181                    return println( null,str.substring( 1,str.length()-1 ) );
182            }
183    
184            /**
185             * 蜈磯?縺ｮ繧ｭ繝ｼ縺ｮ菴咲ｽｮ繧呈怙螟ｧ蛟､縺ｫ蜷医ｏ縺帙※縲∵紛蠖｢縺励∪縺吶?
186             *
187             * @return      閾ｪ蛻??霄ｫ
188             */
189            public ToString fixForm() {
190                    String searchKey = CR + SPACE ;
191                    int    skLen = searchKey.length() ;
192    
193                    char[] ch = new char[maxSize];
194                    Arrays.fill( ch,' ' );
195                    String MAX_SPACE = new String( ch );
196    
197                    int adrs = buf.indexOf( searchKey );
198                    while( adrs >= 0 ) {
199                            int eq = buf.indexOf( "=",adrs );
200                            if( eq >= 0 && buf.charAt(adrs+skLen) != ' ' ) {
201                                    int nextAdrs  = buf.indexOf( searchKey,adrs+skLen );
202                                    if( nextAdrs < 0 || eq < nextAdrs ) {
203                                            buf.insert( eq, MAX_SPACE.substring( eq-(adrs+skLen)-1 ) );
204                                    }
205                            }
206                            adrs = buf.indexOf( searchKey,adrs+skLen );
207                    }
208    
209                    return this;
210            }
211    
212            /**
213             * 蜀?Κ繝舌ャ繝輔ぃ繧呈枚蟄怜?縺ｫ縺励※霑斐＠縺ｾ縺吶?
214             *
215             * @return      蜀?Κ繝舌ャ繝輔ぃ繧呈枚蟄怜?縺ｫ縺励※霑斐＠縺ｾ縺吶?
216             */
217            @Override
218            public String toString() {
219                    return buf.toString() ;
220            }
221    }