Example usage for java.io FileReader FileReader

List of usage examples for java.io FileReader FileReader

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Introduction

In this page you can find the example usage for java.io FileReader FileReader.

Prototype

public FileReader(FileDescriptor fd)

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:Main.java

private static void readFile(String fileName) throws IOException {
    String line;/*w w w.j  a va2s  .  c  o  m*/
    FileReader fr = null;
    BufferedReader br = null;
    try {
        fr = new FileReader(fileName);
        br = new BufferedReader(fr);
        while ((line = br.readLine()) != null) {

            if (line.isEmpty() || line.startsWith("%"))
                continue;
            if (fileName.equals(INTENT_GET_EXTRAS_METHODS)) {
                intentExtrasMethods.add(line);
            } else if (fileName.equals(API_MISUSE_METHODS)) {
                APIMisuseMethods.add(line);
            } else if (fileName.equals(ANDROID_CLASSES)) {
                androidClassPrefixes.add(line);
            } else if (fileName.equals(API_SINK_METHODS)) {
                APISinkMethods.add(line);
            }
        }

    } finally {
        if (br != null)
            br.close();
        if (fr != null)
            fr.close();
    }
}

From source file:Main.java

public static String readFileByLines(@NonNull File file) {
    if (!file.isFile()) {
        return "";
    }/*from w  ww  . j  a v a  2s. com*/
    BufferedReader reader = null;
    StringBuilder builder = new StringBuilder();
    try {
        reader = new BufferedReader(new FileReader(file));
        String tempString;
        while ((tempString = reader.readLine()) != null) {
            builder.append(tempString);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } catch (Exception e) {
    } finally {
        CloseableClose(reader);
    }

    return builder.toString();
}

From source file:naftoreiclag.villagefive.SaveLoad.java

public static World load(Node rootNode, AssetManager assetManager) throws IOException, ParseException {
    World world = new World(rootNode, assetManager);

    JSONParser parser = new JSONParser();

    File file = new File("saves/save.json");
    FileReader fr = new FileReader(file);
    JSONObject root = (JSONObject) parser.parse(fr);
    JSONObject worldj = (JSONObject) root.get("world");

    System.out.println(worldj);//from  www .ja  v  a  2 s  . co m

    world.spawnFromJson(worldj);

    return world;
}

From source file:de.nava.informa.utils.FileUtils.java

public static boolean compare(File fileExpected, File fileActual) throws IOException {

    BufferedReader readExpected;/*from   w  w w . jav a2 s . c o m*/
    try {
        logger.debug("Comparing golden file " + fileExpected + " to " + fileActual);
        readExpected = new BufferedReader(new FileReader(fileExpected));
    } catch (IOException e) {
        logger.error("Could not read baseline: " + e);
        return false;
    }
    BufferedReader readActual = new BufferedReader(new FileReader(fileActual));
    return compare(readExpected, readActual);
}

From source file:gov.nih.nci.caintegrator.application.arraydata.GeneLocationFileLoader.java

static void loadFile(GeneLocationConfiguration geneLocationConfiguration, File geneLocationFile)
        throws ValidationException, IOException {
    CSVReader geneFileReader = new CSVReader(new FileReader(geneLocationFile), DELIMITER);
    try {//from   w  w w .  j  ava 2  s. com
        loadFile(geneLocationConfiguration, geneFileReader);
    } finally {
        IOUtils.closeQuietly(geneFileReader);
    }
}

From source file:atlantis.engine.graphics3d.importer.babylonjs.BabylonImporter.java

public static Mesh[] loadBabyonScene(String filename) {
    Mesh[] mesh = null;/*from  w w  w .j  a  v  a 2s.  c o  m*/
    BufferedReader reader = null;
    StringBuilder jsonString = new StringBuilder();

    try {
        reader = new BufferedReader(new FileReader(filename));
        String line;
        while ((line = reader.readLine()) != null) {
            jsonString.append(line);
        }
        reader.close();

        String[] temp = filename.split("/");
        StringBuilder builder = new StringBuilder();
        for (int i = 0, l = temp.length - 1; i < l; i++) {
            builder.append(temp[i]);
            builder.append("/");
        }

        return getMeshes(createBabylonScene(jsonString.toString(), builder.toString()));

    } catch (IOException e) {
        e.printStackTrace();
    }

    return mesh;
}

From source file:eu.smartfp7.foursquare.AttendanceCrawler.java

/**
 * The main takes an undefined number of cities as arguments, then initializes
 * the specific crawling of all the trending venues of these cities.
 * The trending venues must have been previously identified using the `DownloadPages`
 * program.//w  w  w . j  a va  2s .  c  o  m
 * 
 * Current valid cities are: london, amsterdam, goldcoast, sanfrancisco.
 * 
 */
public static void main(String[] args) throws Exception {
    Settings settings = Settings.getInstance();
    String folder = settings.getFolder();

    // We keep info and error logs, so that we know what happened in case
    // of incoherence in the time series.
    Map<String, FileWriter> info_logs = new HashMap<String, FileWriter>();
    Map<String, FileWriter> error_logs = new HashMap<String, FileWriter>();

    // For each city we monitor, we store the venue IDs that we got from
    // a previous crawl.
    Map<String, Collection<String>> city_venues = new HashMap<String, Collection<String>>();

    // Contains the epoch time when the last API call has been made for each 
    // venue. Ensures that we get data only once each hour. 
    Map<String, Long> venue_last_call = new HashMap<String, Long>();

    // Contains the epoch time when we last checked if time series were broken
    // for each city.
    // We do these checks once every day before the batch forecasting begins.
    Map<String, Long> sanity_checks = new HashMap<String, Long>();

    // We also keep in memory the number of checkins for the last hour for
    // each venue.
    Map<String, Integer> venue_last_checkin = new HashMap<String, Integer>();

    Map<Long, Integer> APICallsCount = new HashMap<Long, Integer>();

    DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    int total_venues = 0;
    long total_calls = 0;
    long time_spent_on_API = 0;

    for (String c : args) {
        settings.checkFileHierarchy(c);

        city_venues.put(c, loadVenues(c));
        total_venues += city_venues.get(c).size();

        info_logs.put(c,
                new FileWriter(folder + c + File.separator + "log" + File.separator + "info.log", true));
        error_logs.put(c,
                new FileWriter(folder + c + File.separator + "log" + File.separator + "error.log", true));

        Calendar cal = Calendar.getInstance();

        info_logs.get(c).write("[" + df.format(cal.getTime()) + "] Crawler initialization for " + c + ". "
                + city_venues.get(c).size() + " venues loaded.\n");
        info_logs.get(c).flush();

        // If we interrupted the program for some reason, we can get back
        // the in-memory data.
        // Important: the program must not be interrupted for more than one
        // hour, or we will lose time series data.
        for (String venue_id : city_venues.get(c)) {
            String ts_file = folder + c + File.separator + "attendances_crawl" + File.separator + venue_id
                    + ".ts";

            if (new File(ts_file).exists()) {
                BufferedReader buffer = new BufferedReader(new FileReader(ts_file));
                String mem = null, line = null;
                for (; (line = buffer.readLine()) != null; mem = line)
                    ;
                buffer.close();

                if (mem == null)
                    continue;

                String[] tmp = mem.split(",");
                venue_last_call.put(venue_id, df.parse(tmp[0]).getTime());
                venue_last_checkin.put(venue_id, Integer.parseInt(tmp[3]));

                VenueUtil.fixBrokenTimeSeriesVenue(new File(ts_file));
            } // if
        } // for

        sanity_checks.put(c, cal.getTimeInMillis());
    } // for

    if (total_venues > 5000) {
        System.out.println(
                "Too much venues for a single API account (max 5000).\nPlease create a new Foursquare API account and use these credentials.\nExiting now.");
        return;
    }

    while (true) {

        for (String c : args) {
            // We create a FIFO queue and pop venue IDs one at a time.
            LinkedList<String> city_venues_buffer = new LinkedList<String>(city_venues.get(c));
            String venue_id = null;

            // Artificial wait to avoid processors looping at 100% of their capacity
            // when there is no more venues to crawl for the current hour.
            Thread.sleep(3000);

            while ((venue_id = city_venues_buffer.pollFirst()) != null) {
                // We get the current time according to the city's time zone
                Calendar cal = Calendar.getInstance();
                cal.add(Calendar.MILLISECOND,
                        TimeZone.getTimeZone(settings.getCityTimezone(c)).getOffset(cal.getTime().getTime())
                                - Calendar.getInstance().getTimeZone().getOffset(cal.getTime().getTime()));
                //TimeZone.getTimeZone("Europe/London").getOffset(cal.getTime().getTime()));

                long current_time = DateUtils.truncate(cal.getTime(), Calendar.HOUR).getTime();

                // We query Foursquare only once per hour per venue.
                if (venue_last_call.get(venue_id) != null
                        && current_time < venue_last_call.get(venue_id) + 3600000)
                    continue;

                intelligentWait(total_venues, cal.getTime().getTime(),
                        (total_calls == 0 ? 0 : Math.round(time_spent_on_API / total_calls)));

                Venue venue = null;

                try {
                    long beforeCall = System.currentTimeMillis();
                    venue = new Venue(getFoursquareVenueById(venue_id, c));

                    // If there is no last call, this is the beginning of the time series
                    // for this venue. We get the number of people "here now" to initialize
                    // the series.
                    if (venue_last_call.get(venue_id) == null) {
                        /** TODO: by doing this, we keep a representation of the venue dating from the beginning
                         *       of the specific crawl. we might want to change this and update this file once
                         *      in a while.
                         */
                        FileWriter info = new FileWriter(folder + c + File.separator + "foursquare_venues"
                                + File.separator + venue_id + ".info");
                        info.write(venue.getFoursquareJson());
                        info.close();

                        FileWriter out = new FileWriter(folder + c + File.separator + "attendances_crawl"
                                + File.separator + venue_id + ".ts");
                        out.write("Date,here_now,hour_checkins,total_checkins\n");
                        out.write(df.format(current_time) + "," + venue.getHereNow() + "," + venue.getHereNow()
                                + "," + venue.getCheckincount() + "\n");
                        out.close();
                    } else {
                        FileWriter out = new FileWriter(folder + c + File.separator + "attendances_crawl"
                                + File.separator + venue_id + ".ts", true);
                        int checks = venue.getCheckincount() - venue_last_checkin.get(venue_id);
                        out.write(df.format(current_time) + "," + venue.getHereNow() + ","
                                + Integer.toString(checks) + "," + venue.getCheckincount() + "\n");
                        out.close();
                    }

                    if (APICallsCount.get(current_time) == null)
                        APICallsCount.put(current_time, 1);
                    else
                        APICallsCount.put(current_time, APICallsCount.get(current_time) + 1);

                    total_calls++;

                    venue_last_call.put(venue_id, current_time);
                    venue_last_checkin.put(venue_id, venue.getCheckincount());

                    time_spent_on_API += System.currentTimeMillis() - beforeCall;
                } catch (Exception e) {
                    // If something bad happens (crawler not available, IO error, ...), we put the
                    // venue_id in the FIFO queue so that it gets reevaluated later.
                    //e.printStackTrace();
                    error_logs.get(c)
                            .write("[" + df.format(cal.getTime().getTime()) + "] Error with venue " + venue_id
                                    + " (" + e.getMessage() + "). " + APICallsCount.get(current_time)
                                    + " API calls so far this hour, " + city_venues_buffer.size()
                                    + " venues remaining in the buffer.\n");
                    error_logs.get(c).flush();

                    System.out.println("[" + df.format(cal.getTime().getTime()) + "] " + c + " -- "
                            + APICallsCount.get(current_time) + " API calls // " + city_venues_buffer.size()
                            + " venues remaining " + " (" + e.getMessage() + ")");

                    if (e instanceof FoursquareAPIException)
                        if (((FoursquareAPIException) e).getHttp_code().equals("400")
                                && ((FoursquareAPIException) e).getError_detail()
                                        .equals("Venue " + venue_id + " has been deleted")) {
                            city_venues.get(c).remove(venue_id);
                            removeVenue(venue_id, c);
                        } else
                            city_venues_buffer.add(venue_id);

                    continue;
                }
            } // while

            // Every day between 0am and 2am, we repair all the broken time series (if there
            // is something to repair).
            Calendar cal = Calendar.getInstance();
            if (city_venues_buffer.peekFirst() == null
                    && (cal.getTimeInMillis() - sanity_checks.get(c)) >= 86400000
                    && cal.get(Calendar.HOUR_OF_DAY) < 2) {
                VenueUtil.fixBrokenTimeSeriesCity(c, folder);
                sanity_checks.put(c, cal.getTimeInMillis());
                info_logs.get(c).write("[" + df.format(cal.getTime()) + "] Sanity check OK.\n");
                info_logs.get(c).flush();
            }
        } // for
    } // while
}

From source file:Main.java

/**
 * get total size of ram. Work for all API levels.
 * @return total size in byte//from   w  ww.j  a va 2 s.  c om
 * @deprecated
 */
public static long getTotalRamSize() {
    StringBuilder sb = new StringBuilder();
    //read this file and pick up numbers
    File file = new File("/proc/meminfo");
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader(file));
        String readLine = br.readLine();
        char[] charArray = readLine.toCharArray();
        for (char c : charArray) {
            if (c >= '0' && c <= '9') {
                sb.append(c);
            }
        }
        String string = sb.toString();
        long parseLong = Long.parseLong(string);
        return parseLong * 1024;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return 0;
}

From source file:com.vikingbrain.nmt.test.util.MockUtils.java

private static String readFile(String fileName) throws IOException {
    BufferedReader br = new BufferedReader(new FileReader(fileName));
    try {//from  www  . j a  va 2 s  . co m
        StringBuilder sb = new StringBuilder();
        String line = br.readLine();

        while (line != null) {
            sb.append(line);
            sb.append("\n");
            line = br.readLine();
        }
        return sb.toString();
    } finally {
        br.close();
    }
}

From source file:Main.java

public static int countSubstringOccurrence(File file, String substring) throws IOException {
    int count = 0;
    BufferedReader reader = null;
    try {/*  w  ww .j ava  2 s. co m*/

        reader = new BufferedReader(new FileReader(file));
        while (true) {
            String line = reader.readLine();
            if (line == null) {
                break;
            }
            count += countSubstringOccurrence(line, substring);
        }

    } finally {
        closeQuietly(reader);
    }
    return count;
}