Mega Code Archive
Parse a line of text in CSV format and returns array of Strings Implementation of parsing is extracted from open-csv
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/*
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.opentides.util;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Random;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class StringUtil {
/**
* Parse a line of text in CSV format and returns array of Strings
* Implementation of parsing is extracted from open-csv.
* http://opencsv.sourceforge.net/
*
* @param csvLine
* @param separator
* @param quotechar
* @param escape
* @param strictQuotes
* @return
* @throws IOException
*/
public static List<String> parseCsvLine(String csvLine,
char separator, char quotechar,
char escape, boolean strictQuotes) {
List<String>tokensOnThisLine = new ArrayList<String>();
StringBuilder sb = new StringBuilder(50);
boolean inQuotes = false;
for (int i = 0; i < csvLine.length(); i++) {
char c = csvLine.charAt(i);
if (c == escape) {
boolean isNextCharEscapable = inQuotes // we are in quotes, therefore there can be escaped quotes in here.
&& csvLine.length() > (i+1) // there is indeed another character to check.
&& ( csvLine.charAt(i+1) == quotechar || csvLine.charAt(i+1) == escape);
if( isNextCharEscapable ){
sb.append(csvLine.charAt(i+1));
i++;
}
} else if (c == quotechar) {
boolean isNextCharEscapedQuote = inQuotes // we are in quotes, therefore there can be escaped quotes in here.
&& csvLine.length() > (i+1) // there is indeed another character to check.
&& csvLine.charAt(i+1) == quotechar;
if( isNextCharEscapedQuote ){
sb.append(csvLine.charAt(i+1));
i++;
}else{
inQuotes = !inQuotes;
// the tricky case of an embedded quote in the middle: a,bc"d"ef,g
if (!strictQuotes) {
if(i>2 //not on the beginning of the line
&& csvLine.charAt(i-1) != separator //not at the beginning of an escape sequence
&& csvLine.length()>(i+1) &&
csvLine.charAt(i+1) != separator //not at the end of an escape sequence
){
sb.append(c);
}
}
}
} else if (c == separator && !inQuotes) {
tokensOnThisLine.add(sb.toString());
sb = new StringBuilder(50); // start work on next token
} else {
if (!strictQuotes || inQuotes)
sb.append(c);
}
}
// line is done - check status
if (inQuotes) {
// _log.warn("Un-terminated quoted field at end of CSV line. \n ["+csvLine+"]");
}
if (sb != null) {
tokensOnThisLine.add(sb.toString());
}
return tokensOnThisLine;
}
}
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