Package com.microstrategy.utils

Class FileUtil

  • public class FileUtil
extends java.lang.Object
    Since:
    MicroStrategy Web 7.3.1 or earlier

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addAllowDirectoryPath​(java.io.File directory)
      Allow specified directory, its files and subdirectories to be accessed.
      void addAllowFilePath​(java.io.File file)
      Allow specified file/directory to be accessed.
      void addAllowPath​(java.lang.String globPattern)
      Add the allowed path (using glob syntax) to be accessed.
      static void clear​(java.lang.String fileName)
      Clears the contents of the file.
      static void copy​(java.lang.String srcFileName, java.lang.String desFileName)
      Copies file srcFileName to another file desFileName.
      static boolean deleteDir​(java.io.File dir)
      Deletes a directory (folder).
      static boolean fileExists​(java.lang.String filePath)
      Returns whether the file or directory specified by filePath exists .
      ContainerServicesContext getContainerServices()
      Returns ContainerServicesContext object associated with the FileUtil instance.
      static java.lang.String getFileExt​(java.io.File f)
      Returns file extension.
      static java.lang.String getFileName​(java.lang.String filePath)
      Returns the name of the file or directory denoted by this file path.
      static FileUtil getInstance()
      Returns a singleton FileUtil instance, this method will be equivalent to a call to getInstance(ContainerServicesContext) with null ContainerServicesContext.
      static FileUtil getInstance​(ContainerServicesContext cs)
      Returns a singleton FileUtil instance.
      static java.nio.file.Path getPath​(java.lang.String filePath)
      Returns a new Path if the specified filePath is valid to be accessed.
      static void initEnableFilePathValidation()
      Initialize flag for whether or not enable file path validation based on preference
      static java.io.File newFile​(java.io.File parent, java.lang.String child)
      Creates a new File instance if the path constructed from a parent abstract pathname and a child pathname string is valid to be accessed.
      static java.io.File newFile​(java.lang.String filePath)
      Creates a new File instance if the specified filePath is valid to be accessed.
      static java.io.File newFile​(java.lang.String parent, java.lang.String child)
      Creates a new File instance if the path constructed from a parent pathname string and a child pathname string is valid to be accessed.
      static java.io.FileInputStream newFileInputStream​(java.lang.String filePath)
      Creates a new FileInputStream if the specified filePath is valid to be accessed.
      static java.io.FileOutputStream newFileOutputStream​(java.lang.String filePath)
      Creates a new FileOutputStream if the specified filePath is valid to be accessed.
      static java.io.FileOutputStream newFileOutputStream​(java.lang.String filePath, boolean append)
      Creates a new FileOutputStream if the specified filePath is valid to be accessed.
      static java.io.FileReader newFileReader​(java.lang.String filePath)
      Creates a new FileReader if the specified filePath is valid to be accessed.
      static java.io.FileWriter newFileWriter​(java.lang.String filePath, boolean append)
      Creates a new FileWriter if the specified filePath is valid to be accessed.
      static boolean rename​(java.lang.String srcFileName, java.lang.String desFileName)
      Renames file srcFileName to desFileName.
      void setContainerServices​(ContainerServicesContext cs)
      Sets ContainerServicesContext object associated with the FileUtil instance.
      static void setEnableFilePathValidation​(boolean enableFilePathValidation)
      Sets flag enableFilePathValidation

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • addAllowDirectoryPath

        public void addAllowDirectoryPath​(java.io.File directory)
        Allow specified directory, its files and subdirectories to be accessed.

        For allowing the directory itself only to be accessed, using addAllowFilePath(File)

        IMPORTANT! To ensure security, do not add paths derived from user requests.

        Parameters:
        directory - Directory to be allowed to access its files and subdirectories.

      • addAllowFilePath

        public void addAllowFilePath​(java.io.File file)
        Allow specified file/directory to be accessed.

        IMPORTANT! To ensure security, do not add paths derived from user requests.

        Parameters:
        file - File or directory to be allowed to access.

      • addAllowPath

        public void addAllowPath​(java.lang.String globPattern)
        Add the allowed path (using glob syntax) to be accessed. Refer to FileSystem.getPathMatcher(String) for the supported glob syntax.

        This method is provided for setting allowed path programmingly.

        IMPORTANT! To ensure security, do not add paths derived from user requests.

        Parameters:
        globPattern - Path to be allowed to access.

      • copy

        public static void copy​(java.lang.String srcFileName,
                        java.lang.String desFileName)
                 throws java.io.FileNotFoundException,
                        java.io.IOException,
                        java.lang.IllegalArgumentException
        Copies file srcFileName to another file desFileName.
        Parameters:
        srcFileName - name of source file
        desFileName - name of destination file
        Throws:
        java.io.FileNotFoundException - if srcFileName cannot be found
        java.io.IOException - if there is a problem during the copy operation
        java.lang.IllegalArgumentException - if either parameters are null

      • clear

        public static void clear​(java.lang.String fileName)
                  throws java.io.FileNotFoundException,
                         java.io.IOException
        Clears the contents of the file.
        Parameters:
        fileName - name of file to be cleared
        Throws:
        java.io.FileNotFoundException - if file is not found
        java.io.IOException - if there is a problem during the clear operation

      • rename

        public static boolean rename​(java.lang.String srcFileName,
                             java.lang.String desFileName)
        Renames file srcFileName to desFileName.
        Parameters:
        srcFileName - name of source file
        desFileName - new name
        Returns:
        true if renaming was possible
        Since:
        MicroStrategy Web 9.0.0
        See Also:
        File.renameTo(java.io.File)

      • deleteDir

        public static boolean deleteDir​(java.io.File dir)
        Deletes a directory (folder). Since a directory can only be deleted if it's empty, it first deletes the contents of the directory recursively, then calls delete on the folder itself.
        Parameters:
        dir - Directory to delete
        Returns:
        boolean true only if the folder and its content were deleted successfully.
        Since:
        MicroStrategy Web 9.0.0

      • getFileExt

        public static java.lang.String getFileExt​(java.io.File f)
        Returns file extension. Always in lower case. Returns null if not found. File with names that begin with "." are not considered an extension (null returned). PRE: assumes object is a file (not a directory).

      • getFileName

        public static java.lang.String getFileName​(java.lang.String filePath)
        Returns the name of the file or directory denoted by this file path.

      • fileExists

        public static boolean fileExists​(java.lang.String filePath)
        Returns whether the file or directory specified by filePath exists .
        Returns:
        true if and only if the file or directory specified by filePath exists; false otherwise

      • setEnableFilePathValidation

        public static void setEnableFilePathValidation​(boolean enableFilePathValidation)
        Sets flag enableFilePathValidation

      • initEnableFilePathValidation

        public static void initEnableFilePathValidation()
        Initialize flag for whether or not enable file path validation based on preference

      • newFile

        public static java.io.File newFile​(java.lang.String filePath)
                            throws MSTRAccessDeniedException
        Creates a new File instance if the specified filePath is valid to be accessed.
        Returns:
        a File instance if the specified filePath is valid to be accessed, otherwise a MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException

      • newFile

        public static java.io.File newFile​(java.lang.String parent,
                                   java.lang.String child)
                            throws MSTRAccessDeniedException
        Creates a new File instance if the path constructed from a parent pathname string and a child pathname string is valid to be accessed.
        Parameters:
        parent - The parent pathname string
        child - The child pathname string
        Returns:
        a File instance if the constructed file path from input is valid to be accessed, otherwise a MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException

      • newFile

        public static java.io.File newFile​(java.io.File parent,
                                   java.lang.String child)
                            throws MSTRAccessDeniedException
        Creates a new File instance if the path constructed from a parent abstract pathname and a child pathname string is valid to be accessed.
        Parameters:
        parent - The parent abstract pathname
        child - The child pathname string
        Returns:
        a File instance if the constructed file path from input is valid to be accessed, otherwise a IOException is thrown.
        Throws:
        MSTRAccessDeniedException

      • newFileReader

        public static java.io.FileReader newFileReader​(java.lang.String filePath)
                                        throws MSTRAccessDeniedException,
                                               java.io.FileNotFoundException
        Creates a new FileReader if the specified filePath is valid to be accessed.
        Returns:
        a FileReader instance if the specified filePath is valid to be accessed, otherwise an MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException
        java.io.FileNotFoundException

      • newFileWriter

        public static java.io.FileWriter newFileWriter​(java.lang.String filePath,
                                               boolean append)
                                        throws MSTRAccessDeniedException,
                                               java.io.IOException
        Creates a new FileWriter if the specified filePath is valid to be accessed.
        Parameters:
        filePath - the file path
        append - if true, bytes will be written to the end of the file rather than the beginning
        Returns:
        a FileWriter instance if the specified filePath is valid to be accessed, otherwise an IOException is thrown.
        Throws:
        MSTRAccessDeniedException
        java.io.IOException

      • newFileInputStream

        public static java.io.FileInputStream newFileInputStream​(java.lang.String filePath)
                                                  throws MSTRAccessDeniedException,
                                                         java.io.FileNotFoundException
        Creates a new FileInputStream if the specified filePath is valid to be accessed.
        Returns:
        a FileInputStream instance if the specified filePath is valid to be accessed, otherwise an MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException
        java.io.FileNotFoundException

      • newFileOutputStream

        public static java.io.FileOutputStream newFileOutputStream​(java.lang.String filePath)
                                                    throws MSTRAccessDeniedException,
                                                           java.io.FileNotFoundException
        Creates a new FileOutputStream if the specified filePath is valid to be accessed.
        Returns:
        a FileOutputStream instance if the specified filePath is valid to be accessed, otherwise an MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException
        java.io.FileNotFoundException

      • newFileOutputStream

        public static java.io.FileOutputStream newFileOutputStream​(java.lang.String filePath,
                                                           boolean append)
                                                    throws MSTRAccessDeniedException,
                                                           java.io.FileNotFoundException
        Creates a new FileOutputStream if the specified filePath is valid to be accessed.
        Parameters:
        filePath - the file path
        append - if true, bytes will be written to the end of the file rather than the beginning
        Returns:
        a FileOutputStream instance if the specified filePath is valid to be accessed, otherwise an MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException
        java.io.FileNotFoundException

      • getPath

        public static java.nio.file.Path getPath​(java.lang.String filePath)
                                  throws MSTRAccessDeniedException
        Returns a new Path if the specified filePath is valid to be accessed.
        Returns:
        a Path instance if the specified filePath is valid to be accessed, otherwise an MSTRAccessDeniedException is thrown.
        Throws:
        MSTRAccessDeniedException