1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.commons.csv.writer;
20
21 import java.io.Writer;
22 import java.util.Arrays;
23 import java.util.Map;
24
25
26 /**
27 * CSVWriter
28 *
29 * @author Martin van den Bemt
30 * @version $Id: $
31 */
32 public class CSVWriter {
33
34 /** The CSV config **/
35 private CSVConfig config;
36 /** The writer **/
37 private Writer writer;
38 /**
39 *
40 */
41 public CSVWriter() {
42 }
43
44 public CSVWriter(CSVConfig config) {
45 setConfig(config);
46 }
47
48 public void writeRecord(Map map) {
49 CSVField[] fields = config.getFields();
50 try {
51 StringBuffer sb = new StringBuffer();
52 for (int i = 0; i < fields.length; i++) {
53 Object o = map.get(fields[i].getName());
54 if (o != null) {
55 String value = o.toString();
56 value = writeValue(fields[i], value);
57 sb.append(value);
58 }
59 if (!config.isDelimiterIgnored() && fields.length != (i+1)) {
60 sb.append(config.getDelimiter());
61 }
62 }
63 if (config.isEndTrimmed()) {
64 for (int i = sb.length()-1; i >= 0; i--) {
65 System.out.println("i : " + i);
66 if (Character.isWhitespace(sb.charAt(i))) {
67 sb.deleteCharAt(i);
68 } else {
69 break;
70 }
71 }
72 }
73 sb.append("\n");
74 String line = sb.toString();
75 writer.write(line);
76 } catch(Exception e) {
77 e.printStackTrace();
78 }
79 }
80
81 protected String writeValue(CSVField field, String value) throws Exception {
82 if (config.isFixedWidth()) {
83 if (value.length() < field.getSize()) {
84 int fillPattern = config.getFill();
85 if (field.overrideFill()) {
86 fillPattern = field.getFill();
87 }
88 StringBuffer sb = new StringBuffer();
89 int fillSize = (field.getSize() - value.length());
90 char[] fill = new char[fillSize];
91 Arrays.fill(fill, config.getFillChar());
92 if (fillPattern == CSVConfig.FILLLEFT) {
93 sb.append(fill);
94 sb.append(value);
95 value = sb.toString();
96 } else {
97 // defaults to fillpattern FILLRIGHT when fixedwidth is used
98 sb.append(value);
99 sb.append(fill);
100 value = sb.toString();
101 }
102 } else if (value.length() > field.getSize()) {
103 // value to big..
104 value = value.substring(0, field.getSize());
105 }
106 if (!config.isValueDelimiterIgnored()) {
107 // add the value delimiter..
108 value = config.getValueDelimiter()+value+config.getValueDelimiter();
109 }
110 }
111 return value;
112 }
113 /**
114 * @return the CVSConfig or null if not present
115 */
116 public CSVConfig getConfig() {
117 return config;
118 }
119
120 /**
121 * Set the CSVConfig
122 * @param config the CVSConfig
123 */
124 public void setConfig(CSVConfig config) {
125 this.config = config;
126 }
127
128 /**
129 * Set the writer to write the CSV file to.
130 * @param writer the writer.
131 */
132 public void setWriter(Writer writer) {
133 this.writer = writer;
134 }
135
136 }