package file.preprocessing;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
public class CiteULikeProcessor {
public static boolean processFile(String inputFile, String outputFile) {
try {
FileReader reader = new FileReader(new File("./data/csv/cul_core/" + inputFile));
FileWriter writer = new FileWriter(new File("./data/csv/cul_core/" + outputFile + ".txt"));
BufferedReader br = new BufferedReader(reader);
BufferedWriter bw = new BufferedWriter(writer);
String line = null;
String resID = "", userHash = "", timestamp = "";
List<String> tags = new ArrayList<String>();
while ((line = br.readLine()) != null) {
String[] lineParts = line.split("\\|");
String tag = lineParts[3];
if (!tag.isEmpty() && !tag.equals("no-tag") && !tag.contains("-import") && !tag.contains("-export") && !tag.contains("sys:") && !tag.contains("system:") && !tag.contains("imported")) {
if (!resID.isEmpty() && !userHash.isEmpty() && (!resID.equals(lineParts[0]) || !userHash.equals(lineParts[1]))) {
writeLine(bw, resID, userHash, timestamp, tags);
tags.clear();
}
resID = lineParts[0];
userHash = lineParts[1];
timestamp = lineParts[2];
tags.add(tag);
}
}
writeLine(bw, resID, userHash, timestamp, tags);
br.close();
bw.flush();
bw.close();
return true;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
private static boolean writeLine(BufferedWriter bw, String resID, String userHash, String timestamp, List<String> tags) {
try {
String tagString = "";
for (String tag : tags) {
tagString += (tag + ",");
}
tagString = tagString.length() > 0 ? tagString.substring(0, tagString.length() - 1) : "";
bw.write("\"" + userHash + "\";\"" + resID + "\";\"" + processTimestamp(timestamp) + "\";\"" + tagString + "\";\"\"\n");
return true;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
private static long processTimestamp(String timestamp) {
timestamp = timestamp.substring(0, timestamp.lastIndexOf("+"));
return Timestamp.valueOf(timestamp).getTime() / 1000; // because of seconds
}
}