add XMLUtil

Author: maxxbw

lib/utils/CSVUtil.java

@@ -2,6 +2,7 @@
 
 import java.io.FileWriter;
 import java.nio.file.Path;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -67,4 +68,94 @@ public static void write2DArray2Csv(List<List<String>> strList, Path filePath) {
 		}
 	}
 
+	/**
+	 * read csv line by line and parse single line to this function code example
+	 * String csvFile = "/Users/mkyong/csv/country2.csv";
+	 * 
+	 * Scanner scanner = new Scanner(new File(csvFile)); while
+	 * (scanner.hasNext()) { List<String> line = parseLine(scanner.nextLine());
+	 * System.out.println("Country [id= " + line.get(0) + ", code= " +
+	 * line.get(1) + " , name=" + line.get(2) + "]"); } scanner.close();
+	 * 
+	 * @param cvsLine
+	 * @param separator
+	 * @param quote
+	 * @return
+	 */
+	public static List<String> parseLine(String cvsLine, char separator, char quote) {
+
+		List<String> result = new ArrayList<>();
+
+		// if empty, return!
+		if (cvsLine == null || cvsLine.isEmpty()) {
+			return result;
+		}
+
+		StringBuffer curVal = new StringBuffer();
+		boolean inQuotes = false;
+		boolean startCollectChar = false;
+		boolean doubleQuotesInColumn = false;
+
+		char[] chars = cvsLine.toCharArray();
+
+		for (char ch : chars) {
+
+			if (inQuotes) {
+				startCollectChar = true;
+				if (ch == quote) {
+					inQuotes = false;
+					doubleQuotesInColumn = false;
+				} else {
+
+					// Fixed : allow "" in custom quote enclosed
+					if (ch == '\"') {
+						if (!doubleQuotesInColumn) {
+							curVal.append(ch);
+							doubleQuotesInColumn = true;
+						}
+					} else {
+						curVal.append(ch);
+					}
+
+				}
+			} else {
+				if (ch == quote) {
+
+					inQuotes = true;
+
+					// Fixed : allow "" in empty quote enclosed
+					if (chars[0] != '"' && quote == '\"') {
+						curVal.append('"');
+					}
+
+					// double quotes in column will hit this!
+					if (startCollectChar) {
+						curVal.append('"');
+					}
+
+				} else if (ch == separator) {
+
+					result.add(curVal.toString());
+
+					curVal = new StringBuffer();
+					startCollectChar = false;
+
+				} else if (ch == '\r') {
+					// ignore LF characters
+					continue;
+				} else if (ch == '\n') {
+					// the end, break!
+					break;
+				} else {
+					curVal.append(ch);
+				}
+			}
+
+		}
+
+		result.add(curVal.toString());
+
+		return result;
+	}
+
 }

lib/utils/XMLUtil.java

@@ -1,10 +1,13 @@
 package javaToolkit.lib.utils;
 
 import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.List;
 
 import javax.xml.transform.*;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
+
 import org.w3c.dom.Node;
 
 public class XMLUtil {
@@ -22,4 +25,15 @@ public static String nodeToString(Node node) {
 		return sw.toString();
 	}
 
+	public static List<Node> getChildbyTagName(Node parent, String nodeName) {
+		List<Node> eleList = new ArrayList<Node>();
+		for (Node child = parent.getFirstChild(); child != null; child = child.getNextSibling()) {
+//			System.out.println("node name " + child.getNodeName());
+			if (nodeName.equals(child.getNodeName())) {
+				eleList.add(child);
+			}
+		}
+		return eleList;
+	}
+
 }