Class: Yast::FileUtilsClass

Inherits:
Module
  • Object
show all
Defined in:
library/general/src/modules/FileUtils.rb

Instance Method Summary collapse

Instance Method Details

#CheckAndCreatePath(pathvalue) ⇒ Boolean

Note:

This is an unstable API function and may change in the future

Checks whether the path (directory) exists and return a boolean value whether everything is OK or user accepted the behavior as despite some errors. If the directory doesn't exist, it offers to create it (and eventually creates it).

Parameters:

  • pathvalue (String)

    (directory)

Returns:

  • (Boolean)

    whether everything was OK or whether user decided to ignore eventual errors



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# File 'library/general/src/modules/FileUtils.rb', line 263

def CheckAndCreatePath(pathvalue)
  check_path = pathvalue

  # remove the final slash
  # but never the last one "/"
  # bugzilla #203363
  if Builtins.regexpmatch(check_path, "/$") && check_path != "/"
    check_path = Builtins.regexpsub(check_path, "^(.*)/$", "\\1")
  end
  Builtins.y2milestone("Checking existency of %1 path", check_path)

  # Directory (path) already exists
  if Exists(check_path)
    Builtins.y2milestone("Path %1 exists", check_path)
    # Directory (path) is a type 'directory'
    return true if IsDirectory(check_path)

    # Directory (path) is not a valid 'directory'
    Builtins.y2warning("Path %1 is not a directory", check_path)
    # Continue despite the error?
    return Popup.ContinueCancel(
      Builtins.sformat(
        # TRANSLATORS: popup question (with continue / cancel buttons)
        # %1 is the filesystem path
        _(
          "Although the path %1 exists, it is not a directory.\nContinue or cancel the operation?\n"
        ),
        pathvalue
      )
    )
  # Directory (path) doesn't exist, trying to create it if wanted
  else
    Builtins.y2milestone("Path %1 does not exist", check_path)
    if Popup.YesNo(
      Builtins.sformat(
        # TRANSLATORS: question popup (with yes / no buttons). A user entered non-existent path
        # for a share, %1 is entered path
        _("The path %1 does not exist.\nCreate it now?\n"),
        pathvalue
      )
    )
      # Directory creation successful
      if Convert.to_boolean(SCR.Execute(path(".target.mkdir"), check_path))
        Builtins.y2milestone(
          "Directory %1 successfully created",
          check_path
        )
        return true
        # Failed to create the directory
      else
        Builtins.y2warning("Failed to create directory %1", check_path)
        # Continue despite the error?
        return Popup.ContinueCancel(
          Builtins.sformat(
            # TRANSLATORS: popup question (with continue / cancel buttons)
            # %1 is the name (path) of the directory
            _(
              "Failed to create the directory %1.\nContinue or cancel the current operation?\n"
            ),
            pathvalue
          )
        )
      end
      # User doesn't want to create the directory
    else
      Builtins.y2warning(
        "User doesn't want to create the directory %1",
        check_path
      )
      return true
    end
  end
end

#Chmod(modes, file, recursive) ⇒ Boolean

Changes access rights to a file/directory

FileUtils::Chmod ( “go-rwx”, “/etc/passwd”, false) -> 'chmod go-rwx /etc/passwd' FileUtils::Chmod ( “700”, “/tmp”, true) -> 'chmod 700 -R /tmp'

Parameters:

  • modes (String)

    ( e.g. '744' or 'u+x')

  • file (String)

    name

  • recursive, (Boolean)

    true if file (2nd param) is a directory

Returns:

  • (Boolean)

    true if succeeded



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# File 'library/general/src/modules/FileUtils.rb', line 419

def Chmod(modes, file, recursive)
  Builtins.y2milestone(
    "Setting access rights of file %1 to %2",
    file,
    modes
  )

  cmd = Builtins.sformat(
    "chmod %1 %2 %3",
    modes,
    recursive ? "-R" : "",
    file
  )

  retval = Convert.to_integer(SCR.Execute(path(".target.bash"), cmd))

  Builtins.y2error("Cannot chmod %1", file) if retval != 0

  retval == 0
end

#Chown(usergroup, file, recursive) ⇒ Boolean

Changes ownership of a file/directory

FileUtils::Chown ( “somebody:somegroup”, “/etc/passwd”, false) -> 'chown somebody:somegroup /etc/passwd' FileUtils::Chown ( “nobody:nogroup”, “/tmp”, true) -> 'chown nobody:nogroup -R /tmp'

Parameters:

  • string

    user and group name (in the form 'user:group')

  • file (String)

    name

  • recursive, (Boolean)

    true if file (2nd param) is a directory

Returns:

  • (Boolean)

    true if succeeded



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# File 'library/general/src/modules/FileUtils.rb', line 387

def Chown(usergroup, file, recursive)
  Builtins.y2milestone(
    "Setting ownership of file %1 to %2",
    file,
    usergroup
  )

  cmd = Builtins.sformat(
    "chown %1 %2 %3",
    usergroup,
    recursive ? "-R" : "",
    file
  )

  retval = Convert.to_integer(SCR.Execute(path(".target.bash"), cmd))

  Builtins.y2error("Cannot chown %1", file) if retval != 0

  retval == 0
end

#CleanupTempObject

Removes files and dirs created in all previous calls to MkTemp



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# File 'library/general/src/modules/FileUtils.rb', line 500

def CleanupTemp
  Builtins.foreach(@tmpfiles) do |one_file|
    Builtins.y2milestone("Removing %1", one_file)
    SCR.Execute(
      path(".target.bash"),
      Builtins.sformat("/bin/rm -rf '%1'", one_file)
    )
  end

  nil
end

#Exists(target) ⇒ Object

Function which determines if the requested file/directory exists.

FileUtils::Exists (“/tmp”) -> true FileUtils::Exists (“/var/log/messages”) -> true FileUtils::Exists (“/does-not-exist”) -> false

Parameters:

  • string

    file name

Returns:

  • true if exists



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# File 'library/general/src/modules/FileUtils.rb', line 54

def Exists(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))

  return true if info != {}
  false
end

#GetFileRealType(target) ⇒ String

Function returns the real type of requested file/directory. If the file is a link to any object, “link” is returned.

FileUtils::GetFileRealType (“/var”) -> “directory” FileUtils::GetFileRealType (“/etc/passwd”) -> “file” FileUtils::GetFileRealType (“/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • (String)

    file type (directory|regular|block|fifo|link|socket|chr_device), nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 169

def GetFileRealType(target)
  info = Convert.to_map(SCR.Read(path(".target.lstat"), target))

  if Ops.get_boolean(info, "islink", false) == true
    "link"
  elsif Ops.get_boolean(info, "isdir", false) == true
    "directory"
  elsif Ops.get_boolean(info, "isreg", false) == true
    "regular"
  elsif Ops.get_boolean(info, "isblock", false) == true
    "block"
  elsif Ops.get_boolean(info, "isfifo", false) == true
    "fifo"
  elsif Ops.get_boolean(info, "issock", false) == true
    "socket"
  elsif Ops.get_boolean(info, "ischr", false) == true
    "chr_device"
  end
end

#GetFileType(target) ⇒ String

Function returns the type of requested file/directory. If the file is a link to any object, the object's type is returned.

Parameters:

  • string

    file name

Returns:

  • (String)

    fle type (directory|regular|block|fifo|link|socket|chr_device), nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 194

def GetFileType(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))

  if Ops.get_boolean(info, "isdir", false) == true
    "directory"
  elsif Ops.get_boolean(info, "isreg", false) == true
    "regular"
  elsif Ops.get_boolean(info, "isblock", false) == true
    "block"
  elsif Ops.get_boolean(info, "isfifo", false) == true
    "fifo"
  elsif Ops.get_boolean(info, "issock", false) == true
    "socket"
  elsif Ops.get_boolean(info, "islink", false) == true
    "link"
  elsif Ops.get_boolean(info, "ischr", false) == true
    "chr_device"
  end
end

#GetOwnerGroupID(target) ⇒ Fixnum

Function which determines the owner's group ID of requested file/directory.

FileUtils::GetOwnerGroupID (“/etc/passwd”) -> 0 FileUtils::GetOwnerGroupID (“/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • (Fixnum)

    GID, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 248

def GetOwnerGroupID(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))

  Ops.get_integer(info, "gid")
end

#GetOwnerUserID(target) ⇒ Fixnum

Function which determines the owner's user ID of requested file/directory.

FileUtils::GetOwnerUserID (“/etc/passwd”) -> 0 FileUtils::GetOwnerUserID (“/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • (Fixnum)

    UID, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 234

def GetOwnerUserID(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))

  Ops.get_integer(info, "uid")
end

#GetSize(target) ⇒ Fixnum

Function which returns the size of requested file/directory.

FileUtils::GetSize (“/var/log/YaST2”) -> 12348 FileUtils::GetSize (“/does-not-exist”) -> -1

Parameters:

  • string

    file name

Returns:

  • (Fixnum)

    file size, -1 if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 222

def GetSize(target)
  Convert.to_integer(SCR.Read(path(".target.size"), target))
end

#IsBlock(target) ⇒ Object

Function which determines if the requested file/directory is a block file (device) or link to a block device.

FileUtils::IsBlock (“/var”) -> false FileUtils::IsBlock (“/dev/sda2”) -> true FileUtils::IsBlock (“/dev/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • true if it is a block file, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 105

def IsBlock(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "isblock", defaultv)
end

#IsCharacterDevice(target) ⇒ Object

Function which determines if the requested file/directory is a character device or link to a character device.

Parameters:

  • string

    file name

Returns:

  • true if it is a charcater device, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 152

def IsCharacterDevice(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "ischr", defaultv)
end

#IsDirectory(target) ⇒ Object

Function which determines if the requested file/directory is a directory or it is a link to a directory.

FileUtils::IsDirectory (“/var”) -> true FileUtils::IsDirectory (“/var/log/messages”) -> false FileUtils::IsDirectory (“/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • true if it is a directory, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 71

def IsDirectory(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "isdir", defaultv)
end

#IsFifo(target) ⇒ Object

Function which determines if the requested file/directory is a fifo or link to a fifo.

Parameters:

  • string

    file name

Returns:

  • true if it is a fifo, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 117

def IsFifo(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "isfifo", defaultv)
end

#IsFile(target) ⇒ Object

Function which determines if the requested file/directory is a regular file or it is a link to a regular file.

FileUtils::IsFile (“/var”) -> false FileUtils::IsFile (“/var/log/messages”) -> true FileUtils::IsFile (“/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • true if it is a regular file, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 88

def IsFile(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "isreg", defaultv)
end

Function which determines if the requested file/directory is a link.

Parameters:

  • string

    file name

Returns:

  • true if it is a link, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 128

def IsLink(target)
  info = Convert.to_map(SCR.Read(path(".target.lstat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "islink", defaultv)
end

#IsSocket(target) ⇒ Object

Function which determines if the requested file/directory is a socket or link to a socket.

Parameters:

  • string

    file name

Returns:

  • true if it is a socket, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 140

def IsSocket(target)
  info = Convert.to_map(SCR.Read(path(".target.stat"), target))
  defaultv = info != {} ? false : nil

  Ops.get_boolean(info, "issock", defaultv)
end

#mainObject



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# File 'library/general/src/modules/FileUtils.rb', line 37

def main
  textdomain "base"
  Yast.import "Popup"
  Yast.import "String"

  @tmpfiles = []
end

#MD5sum(target) ⇒ String

Function return the MD5 sum of the file.

FileUtils::MD5sum (“/etc/passwd”) -> “74855f6ac9bf728fccec4792d1dba828” FileUtils::MD5sum (“/does-not-exist”) -> nil

Parameters:

  • string

    file name

Returns:

  • (String)

    MD5 sum of the file, nil if doesn't exist



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# File 'library/general/src/modules/FileUtils.rb', line 345

def MD5sum(target)
  if !Exists(target)
    Builtins.y2error("File %1 doesn't exist", target)
    return nil
  end

  if !IsFile(target)
    Builtins.y2error("Not a file %1", target)
    return nil
  end

  cmd = Builtins.sformat("md5sum '%1'", String.Quote(target))
  cmd_out = Convert.to_map(SCR.Execute(path(".target.bash_output"), cmd))

  if Ops.get_integer(cmd_out, "exit", -1) != 0
    Builtins.y2error("Command >%1< returned %2", cmd, cmd_out)
    return nil
  end

  filemd5 = Ops.get_string(cmd_out, "stdout", "")
  if Builtins.regexpmatch(filemd5, "[^ \t]+[ \t]+.*$")
    # Format: '19ea7ea41de37314f71c6849ddd259d5 /the/file'
    filemd5 = Builtins.regexpsub(filemd5, "^([^ \t]+)[ \t]+.*$", "\\1")
  else
    Builtins.y2warning("Strange md5out: '%1'", filemd5)
    return nil
  end

  filemd5
end

#MkTempDirectory(template, usergroup, modes) ⇒ Object

The same as MkTempFile, for directories ('mktemp -d … '). See above

FileUtils::MkTempDirectory ( “/tmp/tmpdir.XXXX”, “nobody:nogroup”, “go+x”)



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# File 'library/general/src/modules/FileUtils.rb', line 494

def MkTempDirectory(template, usergroup, modes)
  MkTempInternal(template, usergroup, modes, true)
end

#MkTempFile(template, usergroup, modes) ⇒ String

Creates temporary file

FileUtils::MkTempFile ( “/tmp/tmpfile.XXXX”, “somebody:somegroup”, “744”)

Parameters:

  • template (String)

    for file name e.g. 'tmp.XXXX'

  • string

    tmp file owner in a form 'user:group'

  • string

    tmp file access rights

Returns:

  • (String)

    resulting file name or nil on failure



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# File 'library/general/src/modules/FileUtils.rb', line 486

def MkTempFile(template, usergroup, modes)
  MkTempInternal(template, usergroup, modes, false)
end

#MkTempInternal(template, usergroup, modes, directory) ⇒ Object



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# File 'library/general/src/modules/FileUtils.rb', line 440

def MkTempInternal(template, usergroup, modes, directory)
  mktemp = Builtins.sformat(
    "/bin/mktemp %1 %2",
    directory ? "-d" : "",
    template
  )

  cmd_out = Convert.to_map(SCR.Execute(path(".target.bash_output"), mktemp))
  if Ops.get_integer(cmd_out, "exit", -1) != 0
    Builtins.y2error("Error creating temporary file: %1", cmd_out)
    return nil
  end

  tmpfile = Ops.get(
    Builtins.splitstring(Ops.get_string(cmd_out, "stdout", ""), "\n"),
    0,
    ""
  )

  if tmpfile.nil? || tmpfile == ""
    Builtins.y2error(
      "Error creating temporary file: %1 - empty output",
      cmd_out
    )
    return nil
  end

  if !Chown(usergroup, tmpfile, directory) ||
      !Chmod(modes, tmpfile, directory)
    return nil
  end

  @tmpfiles = Builtins.add(@tmpfiles, tmpfile)
  tmpfile
end