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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//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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