Example usage for java.nio.file Files lines

Introduction

In this page you can find the example usage for java.nio.file Files lines.

Prototype

public static Stream<String> lines(Path path) throws IOException 

Source Link

Document

Read all lines from a file as a Stream .

Usage

From source file:com.sothawo.taboo2.Taboo2UserService.java

@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
    Optional<User> optionalUser;
    synchronized (knownUsers) {
        optionalUser = Optional.ofNullable(knownUsers.get(username));
        if (!optionalUser.isPresent()) {
            // reload the data from users file
            log.debug("loading user data");
            knownUsers.clear();//  w ww  . j  a va 2s . c  om
            Optional.ofNullable(taboo2Configuration.getUsers()).ifPresent(filename -> {
                log.debug("user file: {}", filename);
                try {
                    Files.lines(Paths.get(filename)).map(String::trim).filter(line -> !line.isEmpty())
                            .filter(line -> !line.startsWith("#")).forEach(line -> {
                                String[] fields = line.split(":");
                                if (fields.length == 3) {
                                    String user = fields[0];
                                    String hashedPassword = fields[1];
                                    String[] roles = fields[2].split(",");
                                    if (roles.length < 1) {
                                        roles = new String[] { "undef" };
                                    }
                                    List<GrantedAuthority> authorities = new ArrayList<>();
                                    for (String role : roles) {
                                        authorities.add(new SimpleGrantedAuthority(role));
                                    }
                                    knownUsers.put(user, new User(user, hashedPassword, authorities));
                                }
                            });
                    log.debug("loaded {} user(s)", knownUsers.size());
                } catch (IOException e) {
                    log.debug("reading file", e);
                }
            });

            // search again after reload
            optionalUser = Optional.ofNullable(knownUsers.get(username));
        }
    }
    // need to return a copy as Spring security erases the password in the object after verification
    User user = optionalUser.orElseThrow(() -> new UsernameNotFoundException(username));
    return new User(user.getUsername(), user.getPassword(), user.getAuthorities());
}

---

From source file:pzalejko.iot.hardware.home.core.service.DefaultTemperatureService.java

private double loadTemperatureFromFile(String directory, String fileName) {
    final Path path = Paths.get(directory, fileName);
    if (path.toFile().exists()) {
        try (Stream<String> lines = Files.lines(path)) {
            // @formatter:off
            return lines.filter(s -> s.contains(TEMP_MARKER)).map(TEMPERATURE_VALUE_EXTRACTOR::apply)
                    .findFirst().orElse(Double.NaN);
            // @formatter:on
        } catch (final IOException | NumberFormatException e) {
            LOG.error(LogMessages.COULD_NOT_COLLECT_A_TEMPERATURE, e.getMessage(), e);
        }/*from ww  w.ja v a  2  s  . com*/
    } else {
        LOG.warn(LogMessages.COULD_NOT_COLLECT_TEMPERATURE_MISSING_SOURCE, path.toAbsolutePath());
    }

    return Double.NaN;
}

---

From source file:test.ExtensionsViewer.java

/**
 * @throws java.io.IOException//from   w w w. j a  va2s.  c  om
 */
@SuppressWarnings("UseOfSystemOutOrSystemErr")
@Test
public void test() throws IOException {
    Process process = new ProcessBuilder()
            .command("git", "ls-files", "-z", "--", ":(glob,top,exclude).gitattributes")
            .redirectErrorStream(true).start();
    Map<String, List<Path>> map = Maps.newLinkedHashMap();
    try (InputStream is = process.getInputStream();
            InputStreamReader ir = new InputStreamReader(is, StandardCharsets.UTF_8);
            BufferedReader br = new BufferedReader(ir)) {
        for (StringBuilder sb = new StringBuilder(20);;) {
            int x = br.read();
            if (x == -1) {
                break;
            }
            if (x != 0) {
                sb.append((char) x);
                continue;
            }
            Path path = Paths.get(sb.toString());
            String extension = getExtension(path);
            if (extension.isEmpty()) {
                continue;
            }
            map.computeIfAbsent(extension, __ -> Lists.newArrayList()).add(path);
            sb.setLength(0);
        }
    }

    String gitRoot = new String(IOUtils.toByteArray(
            new ProcessBuilder().command("git", "rev-parse", "--show-toplevel").start().getInputStream()),
            StandardCharsets.UTF_8).trim();

    map.keySet()
            .removeIf(Files.lines(Paths.get(gitRoot, ".gitattributes")).map(String::trim)
                    .filter(str -> str.startsWith("*.")).map(str -> str.replaceAll("^\\*\\.|\\s.+$", ""))
                    .collect(Collectors.toSet())::contains);
    System.out.println(map);
}

---

From source file:com.att.aro.core.settings.impl.JvmSettings.java

@Override
public String getAttribute(String name) {
    if (!StringUtils.equals("Xmx", name)) {
        throw new IllegalArgumentException("Not a valid property:" + name);
    }/*w  w  w  .  j a  va2 s . c o m*/
    Path path = Paths.get(CONFIG_FILE_PATH);
    if (!path.toFile().exists()) {
        return DEFAULT_MEM;
    }
    try (Stream<String> lines = Files.lines(path)) {
        List<String> values = lines.filter((line) -> StringUtils.contains(line, name))
                .collect(Collectors.toList());
        if (values == null || values.isEmpty()) {
            LOGGER.error("No xmx entries on vm options file");
            return DEFAULT_MEM;
        } else {
            return values.get(values.size() - 1).replace("-Xmx", "").replace("m", "");
        }
    } catch (IOException e) {
        String message = "Counldn't read vm options file";
        LOGGER.error(message, e);
        throw new ARORuntimeException(message, e);
    }
}

---

From source file:controllers.Index.java

static void createEmptyIndex(final Client aClient, final String aIndexName, final String aPathToIndexSettings)
        throws IOException {
    deleteIndex(aClient, aIndexName);/*from  w w  w  .j av  a2s  .  c  om*/
    CreateIndexRequestBuilder cirb = aClient.admin().indices().prepareCreate(aIndexName);
    if (aPathToIndexSettings != null) {
        String settingsMappings = Files.lines(Paths.get(aPathToIndexSettings)).collect(Collectors.joining());
        cirb.setSource(settingsMappings);
    }
    cirb.execute().actionGet();
    aClient.admin().indices().refresh(new RefreshRequest()).actionGet();
}

---

From source file:com.baeldung.file.FileOperationsTest.java

@Test
public void givenFilePath_whenUsingFilesLines_thenFileData() throws IOException, URISyntaxException {
    String expectedData = "Hello World from fileTest.txt!!!";

    Path path = Paths.get(getClass().getClassLoader().getResource("fileTest.txt").toURI());

    StringBuilder data = new StringBuilder();
    Stream<String> lines = Files.lines(path);
    lines.forEach(line -> data.append(line).append("\n"));
    lines.close();/* w  w  w.  j a  va2 s. c  om*/

    Assert.assertEquals(expectedData, data.toString().trim());
}

---

From source file:com.baeldung.file.FileOperationsManualTest.java

@Test
public void givenFilePath_whenUsingFilesLines_thenFileData() throws IOException, URISyntaxException {
    String expectedData = "Hello World from fileTest.txt!!!";

    Path path = Paths.get(getClass().getClassLoader().getResource("fileTest.txt").toURI());

    StringBuilder data = new StringBuilder();
    Stream<String> lines = Files.lines(path);
    lines.forEach(line -> data.append(line).append("\n"));
    lines.close();//from  www.  j a  va2s.  co m

    assertEquals(expectedData, data.toString().trim());
}

---

From source file:org.g_node.mergers.LktMergerJenaTest.java

@Test
public void testPlainMergeAndSave() throws Exception {
    final String useCase = "lkt";
    final Path outputFile = this.testFileFolder.resolve("out.ttl");

    final String[] cliArgs = new String[7];
    cliArgs[0] = useCase;/*from   w  ww  .  j  a v  a2s  .  c o  m*/
    cliArgs[1] = "-m";
    cliArgs[2] = this.testMainRdfFile.getAbsolutePath();
    cliArgs[3] = "-i";
    cliArgs[4] = this.testMergeRdfFile.getAbsolutePath();
    cliArgs[5] = "-o";
    cliArgs[6] = outputFile.toString();

    App.main(cliArgs);
    assertThat(Files.exists(outputFile)).isTrue();

    final Stream<String> fileStream = Files.lines(outputFile);
    final List<String> readFile = fileStream.collect(Collectors.toList());
    assertThat(readFile.size()).isEqualTo(5);
    fileStream.close();
}

---

From source file:uk.trainwatch.nrod.timetable.tools.TimeTableChecker.java

private Stream<String> lines(Path p) {
    try {/*from   w ww . jav  a2  s  . c o m*/
        return Files.lines(p);
    } catch (IOException ex) {
        LOG.log(Level.SEVERE, ex, () -> "Failed to parse " + p);
        return Stream.empty();
    }
}

---

From source file:com.gitpitch.models.MarkdownModel.java

@Inject
public MarkdownModel(ImageService imageService, VideoService videoService, GISTService gistService,
        @Nullable @Assisted MarkdownRenderer mrndr) {

    this.imageService = imageService;
    this.videoService = videoService;
    this.gistService = gistService;
    this.mrndr = mrndr;

    String consumed = null;//from  ww  w  .  j  a  va 2s  .  com

    if (mrndr != null) {

        String gitRawBase = mrndr.gitRawBase();
        Path mdPath = mrndr.filePath(PITCHME_MD);

        File mdFile = mdPath.toFile();

        if (mdFile.exists()) {

            Optional<SlideshowModel> ssmo = mrndr.ssm();

            final PitchParams pp = ssmo.isPresent() ? ssmo.get().params() : null;
            final YAMLOptions yOpts = ssmo.isPresent() ? ssmo.get().options() : null;

            if (yOpts != null) {
                hSlideDelim = yOpts.hasHorzDelim(pp) ? yOpts.fetchHorzDelim(pp) : HSLIDE_DELIM_DEFAULT;
                vSlideDelim = yOpts.hasVertDelim(pp) ? yOpts.fetchVertDelim(pp) : VSLIDE_DELIM_DEFAULT;
            }

            try (Stream<String> stream = Files.lines(mdPath)) {

                consumed = stream.map(md -> {
                    return process(md, pp, yOpts, gitRawBase);
                }).collect(Collectors.joining("\n"));

                consumed = postProcess(consumed, pp, yOpts, gitRawBase);

            } catch (Exception mex) {
                log.warn("Markdown processing ex={}", mex);
                consumed = "PITCHME.md could not be parsed.";
            }

        } else {
            log.warn("Markdown file does not exist, {}", mdFile);
        }

    }

    this.markdown = consumed;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• »