+++ /dev/null
-/*
- * Copyright (C) 2007-2012 Mathieu Baudier
- *
- * Licensed 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.argeo.util;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.UnsupportedEncodingException;
-import java.io.Writer;
-import java.util.Iterator;
-import java.util.List;
-
-import org.argeo.ArgeoException;
-
-/** Write in CSV format. */
-public class CsvWriter {
- private final Writer out;
-
- private char separator = ',';
- private char quote = '\"';
-
- /**
- * Creates a CSV writer.
- *
- * @param out
- * the stream to write to. Caller is responsible for closing it.
- */
- public CsvWriter(OutputStream out) {
- this.out = new OutputStreamWriter(out);
- }
-
- /**
- * Creates a CSV writer.
- *
- * @param out
- * the stream to write to. Caller is responsible for closing it.
- */
- public CsvWriter(OutputStream out, String encoding) {
- try {
- this.out = new OutputStreamWriter(out, encoding);
- } catch (UnsupportedEncodingException e) {
- throw new ArgeoException("Cannot initialize CSV writer", e);
- }
- }
-
- /**
- * Write a CSV line. Also used to write a header if needed (this is
- * transparent for the CSV writer): simply call it first, before writing the
- * lines.
- */
- public void writeLine(List<?> tokens) {
- try {
- Iterator<?> it = tokens.iterator();
- while (it.hasNext()) {
- writeToken(it.next().toString());
- if (it.hasNext())
- out.write(separator);
- }
- out.write('\n');
- out.flush();
- } catch (IOException e) {
- throw new ArgeoException("Could not write " + tokens, e);
- }
- }
-
- /**
- * Write a CSV line. Also used to write a header if needed (this is
- * transparent for the CSV writer): simply call it first, before writing the
- * lines.
- */
- public void writeLine(Object[] tokens) {
- try {
- for (int i = 0; i < tokens.length; i++) {
- if (tokens[i] == null) {
- // TODO configure how to deal with null
- writeToken("");
- } else {
- writeToken(tokens[i].toString());
- }
- if (i != (tokens.length - 1))
- out.write(separator);
- }
- out.write('\n');
- out.flush();
- } catch (IOException e) {
- throw new ArgeoException("Could not write " + tokens, e);
- }
- }
-
- protected void writeToken(String token) throws IOException {
- // +2 for possible quotes, another +2 assuming there would be an already
- // quoted string where quotes needs to be duplicated
- // another +2 for safety
- // we don't want to increase buffer size while writing
- StringBuffer buf = new StringBuffer(token.length() + 6);
- char[] arr = token.toCharArray();
- boolean shouldQuote = false;
- for (char c : arr) {
- if (!shouldQuote) {
- if (c == separator)
- shouldQuote = true;
- if (c == '\n')
- shouldQuote = true;
- }
-
- if (c == quote) {
- shouldQuote = true;
- // duplicate quote
- buf.append(quote);
- }
-
- // generic case
- buf.append(c);
- }
-
- if (shouldQuote == true)
- out.write(quote);
- out.write(buf.toString());
- if (shouldQuote == true)
- out.write(quote);
- }
-
- public void setSeparator(char separator) {
- this.separator = separator;
- }
-
- public void setQuote(char quote) {
- this.quote = quote;
- }
-
-}