java.io.File.canExecute()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.io.File.canExecute()方法的一些代码示例，展示了File.canExecute()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。File.canExecute()方法的具体详情如下：
包路径：java.io.File
类名称：File
方法名：canExecute

File.canExecute介绍

[英]Tests whether or not this process is allowed to execute this file. Note that this is a best-effort result; the only way to be certain is to actually attempt the operation.
[中]测试是否允许此进程执行此文件。请注意，这是一个尽力而为的结果；唯一确定的方法是实际尝试该操作。

代码示例

代码示例来源：origin: gocd/gocd

public static boolean isDirectoryReadable(File directory) {
  return directory.canRead() && directory.canExecute() && directory.listFiles() != null;
}

代码示例来源：origin: azkaban/azkaban

private void validate() {
 if (!this.binaryExecutable.canExecute()) {
  throw new RuntimeException("Unable to execute execute-as-user binary. Invalid Path: "
    + this.binaryExecutable.getAbsolutePath());
 }
}

代码示例来源：origin: jphp-group/jphp

public static boolean is_executable(String path) {
  return new File(path).canExecute();
}

代码示例来源：origin: KronicDeth/intellij-elixir

public static boolean pathIsValidSdkHome(String path) {
  File bin = new File(path, "bin").getAbsoluteFile();
  File elixir = new File(bin, "elixir");
  File elixirc = new File(bin, "elixirc");
  File iex = new File(bin, "iex");
  File mix = new File(bin, "mix");
  return elixir.canExecute() && elixirc.canExecute() && iex.canExecute() && mix.canExecute();
}

代码示例来源：origin: plantuml/plantuml

private static String findExecutableOnPath(String name) {
  for (String dirname : System.getenv("PATH").split(File.pathSeparator)) {
    File file = new File(dirname, name);
    if (file.isFile() && file.canExecute()) {
      return file.getAbsolutePath();
    }
  }
  return null;
}

代码示例来源：origin: netty/netty

private static boolean canExecuteExecutable(File file) throws IOException {
  if (PlatformDependent.javaVersion() < 7) {
    // Pre-JDK7, the Java API did not directly support POSIX permissions; instead of implementing a custom
    // work-around, assume true, which disables the check.
    return true;
  }
  // If we can already execute, there is nothing to do.
  if (file.canExecute()) {
    return true;
  }
  // On volumes, with noexec set, even files with the executable POSIX permissions will fail to execute.
  // The File#canExecute() method honors this behavior, probaby via parsing the noexec flag when initializing
  // the UnixFileStore, though the flag is not exposed via a public API.  To find out if library is being
  // loaded off a volume with noexec, confirm or add executalbe permissions, then check File#canExecute().
  // Note: We use FQCN to not break when netty is used in java6
  Set<java.nio.file.attribute.PosixFilePermission> existingFilePermissions =
      java.nio.file.Files.getPosixFilePermissions(file.toPath());
  Set<java.nio.file.attribute.PosixFilePermission> executePermissions =
      EnumSet.of(java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE,
          java.nio.file.attribute.PosixFilePermission.GROUP_EXECUTE,
          java.nio.file.attribute.PosixFilePermission.OTHERS_EXECUTE);
  if (existingFilePermissions.containsAll(executePermissions)) {
    return false;
  }
  Set<java.nio.file.attribute.PosixFilePermission> newPermissions = EnumSet.copyOf(existingFilePermissions);
  newPermissions.addAll(executePermissions);
  java.nio.file.Files.setPosixFilePermissions(file.toPath(), newPermissions);
  return file.canExecute();
}

代码示例来源：origin: alibaba/jstorm

private static List<String> generateCommands(String filePath) {
  File path = new File(filePath);
  List<String> commands = new ArrayList<>();
  if (path.exists()) {
    File[] files = path.listFiles();
    if (files == null) {
      return commands;
    }
    for (File file : files) {
      if (!file.isDirectory() && file.canExecute()) {
        commands.add(file.getAbsolutePath());
      }
    }
  }
  LOG.debug("The generated check commands are {}", commands);
  return commands;
}

代码示例来源：origin: twosigma/beakerx

public String findMvn() {
 if (mavenLocation == null) {
  if (System.getenv("M2_HOME") != null) {
   mavenLocation = System.getenv("M2_HOME") + "/bin/mvn";
   return mavenLocation;
  }
  for (String dirname : System.getenv("PATH").split(File.pathSeparator)) {
   File file = new File(dirname, "mvn");
   if (file.isFile() && file.canExecute()) {
    mavenLocation = file.getAbsolutePath();
    return mavenLocation;
   }
  }
  throw new RuntimeException("No mvn found, please install mvn by 'conda install maven' or setup M2_HOME");
 }
 return mavenLocation;
}

代码示例来源：origin: KronicDeth/intellij-elixir

@Override
public boolean isValidSdkHome(String path) {
  File erl = Erlang.getByteCodeInterpreterExecutable(path);
  return erl.canExecute();
}

代码示例来源：origin: jphp-group/jphp

@Signature
public Memory canExecute(Environment env, Memory... args){
  return file.canExecute() ? Memory.TRUE : Memory.FALSE;
}

代码示例来源：origin: redisson/redisson

private static boolean canExecuteExecutable(File file) throws IOException {
  if (PlatformDependent.javaVersion() < 7) {
    // Pre-JDK7, the Java API did not directly support POSIX permissions; instead of implementing a custom
    // work-around, assume true, which disables the check.
    return true;
  }
  // If we can already execute, there is nothing to do.
  if (file.canExecute()) {
    return true;
  }
  // On volumes, with noexec set, even files with the executable POSIX permissions will fail to execute.
  // The File#canExecute() method honors this behavior, probaby via parsing the noexec flag when initializing
  // the UnixFileStore, though the flag is not exposed via a public API.  To find out if library is being
  // loaded off a volume with noexec, confirm or add executalbe permissions, then check File#canExecute().
  // Note: We use FQCN to not break when netty is used in java6
  Set<java.nio.file.attribute.PosixFilePermission> existingFilePermissions =
      java.nio.file.Files.getPosixFilePermissions(file.toPath());
  Set<java.nio.file.attribute.PosixFilePermission> executePermissions =
      EnumSet.of(java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE,
          java.nio.file.attribute.PosixFilePermission.GROUP_EXECUTE,
          java.nio.file.attribute.PosixFilePermission.OTHERS_EXECUTE);
  if (existingFilePermissions.containsAll(executePermissions)) {
    return false;
  }
  Set<java.nio.file.attribute.PosixFilePermission> newPermissions = EnumSet.copyOf(existingFilePermissions);
  newPermissions.addAll(executePermissions);
  java.nio.file.Files.setPosixFilePermissions(file.toPath(), newPermissions);
  return file.canExecute();
}

代码示例来源：origin: KronicDeth/intellij-elixir

@Override
public boolean isValidSdkHome(@NotNull String path) {
  File elixir = Elixir.getScriptInterpreterExecutable(path);
  File elixirc = Elixir.getByteCodeCompilerExecutable(path);
  File iex = Elixir.getIExExecutable(path);
  File mix = Elixir.mixFile(path);
  // Determine whether everything is can run
  return elixir.canExecute() && elixirc.canExecute() && iex.canExecute() && mix.canRead();
}

代码示例来源：origin: go-lang-plugin-org/go-lang-idea-plugin

@Override
protected GoExecutor patchExecutor(@NotNull GoExecutor executor) throws ExecutionException {
 if (isDebug()) {
  File dlv = dlv();
  if (dlv.exists() && !dlv.canExecute()) {
   //noinspection ResultOfMethodCallIgnored
   dlv.setExecutable(true, false);
  }
  return executor.withExePath(dlv.getAbsolutePath())
   .withParameters("--listen=localhost:" + myDebugPort, "--headless=true", "exec", myOutputFilePath, "--");
 }
 return executor.showGoEnvVariables(false).withExePath(myOutputFilePath);
}

代码示例来源：origin: ethereum/ethereumj

private void init(SystemProperties config) throws IOException {
  if (config != null && config.customSolcPath() != null) {
    solc = new File(config.customSolcPath());
    if (!solc.canExecute()) {
      throw new RuntimeException(String.format(
          "Solidity compiler from config solc.path: %s is not a valid executable",
          config.customSolcPath()
      ));
    }
  } else {
    initBundled();
  }
}

代码示例来源：origin: apache/flink

public static void writeFileInfoToConfig(String name, DistributedCacheEntry e, Configuration conf) {
  int num = conf.getInteger(CACHE_FILE_NUM, 0) + 1;
  conf.setInteger(CACHE_FILE_NUM, num);
  conf.setString(CACHE_FILE_NAME + num, name);
  conf.setString(CACHE_FILE_PATH + num, e.filePath);
  conf.setBoolean(CACHE_FILE_EXE + num, e.isExecutable || new File(e.filePath).canExecute());
  conf.setBoolean(CACHE_FILE_DIR + num, e.isZipped || new File(e.filePath).isDirectory());
  if (e.blobKey != null) {
    conf.setBytes(CACHE_FILE_BLOB_KEY + num, e.blobKey);
  }
}

代码示例来源：origin: gocd/gocd

public CommandSnippets getAllCommandSnippets(String repositoryDirectory) {
  serverHealthService.update(ServerHealthState.success(HealthStateType.commandRepositoryAccessibilityIssue()));
  try {
    File commandRepositoryDirectory = new File(repositoryDirectory);
    //adding the exists check till packaging command repository with Go story is played.
    if (commandRepositoryDirectory.isDirectory() && commandRepositoryDirectory.canRead() && commandRepositoryDirectory.canExecute()) {
      return new CommandSnippets(walk(commandRepositoryDirectory));
    } else {
      throw new IOException("Failed to access command repository located in Go Server Directory at " + repositoryDirectory +
          ". The directory does not exist or Go does not have sufficient permissions to access it.");
    }
  } catch (IOException e) {
    ServerHealthState serverHealthState = ServerHealthState.warning("Command Repository", e.getMessage(), HealthStateType.commandRepositoryAccessibilityIssue(),
        systemEnvironment.getCommandRepoWarningTimeout());
    serverHealthService.update(serverHealthState);
    LOGGER.warn(e.getMessage());
  }
  return new CommandSnippets(new ArrayList<>());
}

代码示例来源：origin: gocd/gocd

@Test
public void shouldReturnTrueIfDirectoryIsReadable() throws IOException {
  File readableDirectory = mock(File.class);
  when(readableDirectory.canRead()).thenReturn(true);
  when(readableDirectory.canExecute()).thenReturn(true);
  when(readableDirectory.listFiles()).thenReturn(new File[]{});
  assertThat(FileUtil.isDirectoryReadable(readableDirectory), is(true));
  File unreadableDirectory = mock(File.class);
  when(readableDirectory.canRead()).thenReturn(false);
  when(readableDirectory.canExecute()).thenReturn(false);
  assertThat(FileUtil.isDirectoryReadable(unreadableDirectory), is(false));
  verify(readableDirectory).canRead();
  verify(readableDirectory).canExecute();
  verify(readableDirectory).listFiles();
  verify(unreadableDirectory).canRead();
  verify(unreadableDirectory, never()).canExecute();
}

代码示例来源：origin: go-lang-plugin-org/go-lang-idea-plugin

@Override
public boolean isValidSdkHome(@NotNull String path) {
 GoSdkService.LOG.debug("Validating sdk path: " + path);
 String executablePath = GoSdkService.getGoExecutablePath(path);
 if (executablePath == null) {
  GoSdkService.LOG.debug("Go executable is not found: ");
  return false;
 }
 if (!new File(executablePath).canExecute()) {
  GoSdkService.LOG.debug("Go binary cannot be executed: " + path);
  return false;
 }
 if (getVersionString(path) != null) {
  GoSdkService.LOG.debug("Cannot retrieve version for sdk: " + path);
  return true;
 }
 return false;
}

代码示例来源：origin: docker-java/docker-java

@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
  if (attrs.isSymbolicLink()) { // symbolic link to folder
    return FileVisitResult.CONTINUE;
  }
  TarArchiveEntry tarEntry = new TarArchiveEntry(FilePathUtil.relativize(basePath, file));
  if (file.toFile().canExecute()) {
    tarEntry.setMode(tarEntry.getMode() | 0755);
  }
  CompressArchiveUtil.putTarEntry(tarArchiveOutputStream, tarEntry, file);
  return FileVisitResult.CONTINUE;
}

代码示例来源：origin: apache/storm

@Override
  public FileStatus getFileStatus(Path path) throws IOException {
    File file = pathToFile(path);
    if (!file.exists()) {
      throw new FileNotFoundException("Can't find " + path);
    }
    // get close enough
    short mod = 0;
    if (file.canRead()) {
      mod |= 0444;
    }
    if (file.canWrite()) {
      mod |= 0200;
    }
    if (file.canExecute()) {
      mod |= 0111;
    }
    ShimLoader.getHadoopShims();
    return new FileStatus(file.length(), file.isDirectory(), 1, 1024,
               file.lastModified(), file.lastModified(),
               FsPermission.createImmutable(mod), "owen", "users", path);
  }
}

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