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[TOREVIEW] Updates added #52

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275 changes: 146 additions & 129 deletions LabJavaIO/src/main/java/ch/heigvd/res/labio/impl/Application.java
Original file line number Diff line number Diff line change
Expand Up @@ -7,147 +7,164 @@
import ch.heigvd.res.labio.interfaces.IFileVisitor;
import ch.heigvd.res.labio.quotes.QuoteClient;
import ch.heigvd.res.labio.quotes.Quote;
import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.commons.io.FileUtils;

/**
*
* @author Olivier Liechti
*/
public class Application implements IApplication {

/**
* This constant defines where the quotes will be stored. The path is relative
* to where the Java application is invoked.
*/
public static String WORKSPACE_DIRECTORY = "./workspace/quotes";

private static final Logger LOG = Logger.getLogger(Application.class.getName());

public static void main(String[] args) {

/*
* I prefer to have LOG output on a single line, it's easier to read. Being able
* to change the formatting of console outputs is one of the reasons why it is
* better to use a Logger rather than using System.out.println
/**
* This constant defines where the quotes will be stored. The path is relative
* to where the Java application is invoked.
*/
System.setProperty("java.util.logging.SimpleFormatter.format", "%4$s: %5$s%6$s%n");


int numberOfQuotes = 0;
try {
numberOfQuotes = Integer.parseInt(args[0]);
} catch (Exception e) {
System.err.println("The command accepts a single numeric argument (number of quotes to fetch)");
System.exit(-1);

public static String WORKSPACE_DIRECTORY = "./workspace/quotes";

private static final Logger LOG = Logger.getLogger(Application.class.getName());

public static void main(String[] args) {

/*
* I prefer to have LOG output on a single line, it's easier to read. Being able
* to change the formatting of console outputs is one of the reasons why it is
* better to use a Logger rather than using System.out.println
*/
System.setProperty("java.util.logging.SimpleFormatter.format", "%4$s: %5$s%6$s%n");


int numberOfQuotes = 0;
try {
numberOfQuotes = Integer.parseInt(args[0]);
} catch (Exception e) {
System.err.println("The command accepts a single numeric argument (number of quotes to fetch)");
System.exit(-1);
}

Application app = new Application();
try {
/*
* Step 1 : clear the output directory
*/
app.clearOutputDirectory();

/*
* Step 2 : use the QuotesClient to fetch quotes; store each quote in a file
*/
app.fetchAndStoreQuotes(numberOfQuotes);

/*
* Step 3 : use a file explorer to traverse the file system; print the name of each directory and file
*/
Writer writer = new StringWriter(); // we create a special writer that will send characters into a string (memory)
app.printFileNames(writer); // we hand over this writer to the printFileNames method
LOG.info(writer.toString()); // we dump the whole result on the console

/*
* Step 4 : process the quote files, by applying 2 transformations to their content
* (convert to uppercase and add line numbers)
*/
app.processQuoteFiles();

} catch (IOException ex) {
LOG.log(Level.SEVERE, "Could not fetch quotes. {0}", ex.getMessage());
ex.printStackTrace();
}
}

Application app = new Application();
try {
/*
* Step 1 : clear the output directory
*/
app.clearOutputDirectory();

/*
* Step 2 : use the QuotesClient to fetch quotes; store each quote in a file
*/
app.fetchAndStoreQuotes(numberOfQuotes);

/*
* Step 3 : use a file explorer to traverse the file system; print the name of each directory and file
*/
Writer writer = new StringWriter(); // we create a special writer that will send characters into a string (memory)
app.printFileNames(writer); // we hand over this writer to the printFileNames method
LOG.info(writer.toString()); // we dump the whole result on the console

/*
* Step 4 : process the quote files, by applying 2 transformations to their content
* (convert to uppercase and add line numbers)
*/
app.processQuoteFiles();

} catch (IOException ex) {
LOG.log(Level.SEVERE, "Could not fetch quotes. {0}", ex.getMessage());
ex.printStackTrace();

@Override
public void fetchAndStoreQuotes(int numberOfQuotes) throws IOException {
clearOutputDirectory();
QuoteClient client = new QuoteClient();
for (int i = 0; i < numberOfQuotes; i++) {
Quote quote = client.fetchQuote();
/* There is a missing piece here!
* As you can see, this method handles the first part of the lab. It uses the web service
* client to fetch quotes. We have removed a single line from this method. It is a call to
* one method provided by this class, which is responsible for storing the content of the
* quote in a text file (and for generating the directories based on the tags).
*/
LOG.info("Received a new joke with " + quote.getTags().size() + " tags.");
for (String tag : quote.getTags()) {
LOG.info("> " + tag);
}
/*adding fetch storeQuote*/
storeQuote(quote, "quote-" + i + ".utf8");
}
}
}

@Override
public void fetchAndStoreQuotes(int numberOfQuotes) throws IOException {
clearOutputDirectory();
QuoteClient client = new QuoteClient();
for (int i = 0; i < numberOfQuotes; i++) {
Quote quote = client.fetchQuote();
/* There is a missing piece here!
* As you can see, this method handles the first part of the lab. It uses the web service
* client to fetch quotes. We have removed a single line from this method. It is a call to
* one method provided by this class, which is responsible for storing the content of the
* quote in a text file (and for generating the directories based on the tags).
*/
LOG.info("Received a new joke with " + quote.getTags().size() + " tags.");
for (String tag : quote.getTags()) {
LOG.info("> " + tag);
}

/**
* This method deletes the WORKSPACE_DIRECTORY and its content. It uses the
* apache commons-io library. You should call this method in the main method.
*
* @throws IOException
*/
void clearOutputDirectory() throws IOException {
FileUtils.deleteDirectory(new File(WORKSPACE_DIRECTORY));
}

/**
* This method stores the content of a quote in the local file system. It has
* 2 responsibilities:
* <p>
* - with quote.getTags(), it gets a list of tags and uses
* it to create sub-folders (for instance, if a quote has three tags "A", "B" and
* "C", it will be stored in /quotes/A/B/C/quotes-n.utf8.
* <p>
* - with quote.getQuote(), it has access to the text of the quote. It stores
* this text in UTF-8 file.
*
* @param quote the quote object, with tags and text
* @param filename the name of the file to create and where to store the quote text
* @throws IOException
*/
void storeQuote(Quote quote, String filename) throws IOException {
String path = WORKSPACE_DIRECTORY;
for (String tag : quote.getTags()) {
path += "/" + tag;
}
new File(path).mkdirs();
path += "/" + filename;
File file = new File(path);
/*englobing decorator */
try {
Writer output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8));
output.write(quote.getQuote());
output.close();
}catch (IOException e){
e.printStackTrace();
}

}

/**
* This method uses a IFileExplorer to explore the file system and prints the name of each
* encountered file and directory.
*/
void printFileNames(final Writer writer) {
IFileExplorer explorer = new DFSFileExplorer();
explorer.explore(new File(WORKSPACE_DIRECTORY), new IFileVisitor() {
@Override
public void visit(File file) {
try {
writer.write(file.getPath() + '\n');
} catch (IOException e) {
e.getMessage();
}
}
});
}

@Override
public void processQuoteFiles() throws IOException {
IFileExplorer explorer = new DFSFileExplorer();
explorer.explore(new File(WORKSPACE_DIRECTORY), new CompleteFileTransformer());
}
}

/**
* This method deletes the WORKSPACE_DIRECTORY and its content. It uses the
* apache commons-io library. You should call this method in the main method.
*
* @throws IOException
*/
void clearOutputDirectory() throws IOException {
FileUtils.deleteDirectory(new File(WORKSPACE_DIRECTORY));
}

/**
* This method stores the content of a quote in the local file system. It has
* 2 responsibilities:
*
* - with quote.getTags(), it gets a list of tags and uses
* it to create sub-folders (for instance, if a quote has three tags "A", "B" and
* "C", it will be stored in /quotes/A/B/C/quotes-n.utf8.
*
* - with quote.getQuote(), it has access to the text of the quote. It stores
* this text in UTF-8 file.
*
* @param quote the quote object, with tags and text
* @param filename the name of the file to create and where to store the quote text
* @throws IOException
*/
void storeQuote(Quote quote, String filename) throws IOException {
throw new UnsupportedOperationException("The student has not implemented this method yet.");
}

/**
* This method uses a IFileExplorer to explore the file system and prints the name of each
* encountered file and directory.
*/
void printFileNames(final Writer writer) {
IFileExplorer explorer = new DFSFileExplorer();
explorer.explore(new File(WORKSPACE_DIRECTORY), new IFileVisitor() {
@Override
public void visit(File file) {
/*
* There is a missing piece here. Notice how we use an anonymous class here. We provide the implementation
* of the the IFileVisitor interface inline. You just have to add the body of the visit method, which should
* be pretty easy (we want to write the filename, including the path, to the writer passed in argument).
*/
}
});
}

@Override
public void processQuoteFiles() throws IOException {
IFileExplorer explorer = new DFSFileExplorer();
explorer.explore(new File(WORKSPACE_DIRECTORY), new CompleteFileTransformer());
}

}
42 changes: 38 additions & 4 deletions LabJavaIO/src/main/java/ch/heigvd/res/labio/impl/Utils.java
Original file line number Diff line number Diff line change
@@ -1,26 +1,60 @@
package ch.heigvd.res.labio.impl;

import java.util.concurrent.RunnableScheduledFuture;
import java.util.logging.Logger;

/**
*
* @author Olivier Liechti
*/



public class Utils {
public static final char TAB='\t';
public static final char UNIX_SEP = '\n';/*unix seperator*/
public static final char MAC_SEP = '\r';/*mac os seperator*/
public static final String WIN_SEP = "\r\n";/*windows seperator*/

private static final Logger LOG = Logger.getLogger(Utils.class.getName());

/**
* This method looks for the next new line separators (\r, \n, \r\n) to extract
* the next line in the string passed in arguments.
*
* the next line in the string passed in arguments.
*
* @param lines a string that may contain 0, 1 or more lines
* @return an array with 2 elements; the first element is the next line with
* the line separator, the second element is the remaining text. If the argument does not
* contain any line separator, then the first element is an empty string.
*/
public static String[] getNextLine(String lines) {
throw new UnsupportedOperationException("The student has not implemented this method yet.");
String[] str = {"", ""};

int l=WIN_SEP.length();
/* case Windows*/
if (lines.contains(WIN_SEP)) {

str[0] = lines.substring(0, lines.indexOf(WIN_SEP) + l);
str[1] = lines.substring(lines.indexOf(WIN_SEP) + l);
}
/* case MacOs*/
else if (lines.contains(String.valueOf(MAC_SEP))) {

str[0] = lines.substring(0, lines.indexOf(MAC_SEP) + 1);
str[1] = lines.substring(lines.indexOf(MAC_SEP) + 1);

}
/* case Unix*/
else if (lines.contains(String.valueOf(UNIX_SEP)) ) {

str[0] = lines.substring(0, lines.indexOf(UNIX_SEP) + 1);
str[1] = lines.substring(lines.indexOf(UNIX_SEP) + 1);
}
else {

str[1] = lines;
}

return str;
}

}
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import ch.heigvd.res.labio.interfaces.IFileExplorer;
import ch.heigvd.res.labio.interfaces.IFileVisitor;
import java.io.File;
import java.util.Arrays;

/**
* This implementation of the IFileExplorer interface performs a depth-first
Expand All @@ -16,7 +17,26 @@ public class DFSFileExplorer implements IFileExplorer {

@Override
public void explore(File rootDirectory, IFileVisitor vistor) {
throw new UnsupportedOperationException("The student has not implemented this method yet.");
vistor.visit(rootDirectory);
File[] directories = rootDirectory.listFiles(File::isDirectory);
File[] files = rootDirectory.listFiles(File::isFile);

/* chek if root directory exist*/
if (!rootDirectory.exists())
return;

if (directories.length != 0) {
/* Directories*/
Arrays.sort(directories);
/* Files */
Arrays.sort(files);
}
/*Dfs vist Directories */
for (File dir : directories)
explore(dir, vistor);
/* DFS vist files*/
for (File file : files)
vistor.visit(file);
}

}
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