Class: ISO9660

Inherits:
Object
  • Object
show all
Defined in:
lib/iso9660.rb

Defined Under Namespace

Classes: FS, IFS

Class Method Summary collapse

Class Method Details

.achar?(achar) ⇒ Boolean

Returns: bool

Return 1 if achar is an ISO-9660 ACHAR. achar should either be a string of length one or the ord() of a string of length 1.

These are the DCHAR’s plus some ASCII symbols including the space symbol.

Returns:

  • (Boolean) 


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# File 'lib/iso9660.rb', line 469

def ISO9660.achar?(achar)
  if achar.class == Fixnum
    # Is an integer. Is it too large?
    if achar > 255 then return false end
  elsif achar.class == String and achar.length() == 1
    achar = achar[0]
  else
    return false
  end
  return Rubyiso9660::achar?(achar)
end

.check_types ⇒ Object

class ISO9660



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# File 'lib/iso9660.rb', line 439

def ISO9660.check_types()
  return {
    :nocheck   => Rubyiso9660::NOCHECK,
    :"7bit"    => Rubyiso9660::SEVEN_BIT,
    :achars    => Rubyiso9660::ACHARS,
    :dchars    => Rubyiso9660::DCHARS
  }
end

.dchar?(dchar) ⇒ Boolean

Returns: bool

Return 1 if dchar is a ISO-9660 DCHAR - a character that can appear in an an ISO-9600 level 1 directory name. These are the ASCII capital letters A-Z, the digits 0-9 and an underscore.

dchar should either be a string of length one or the ord() of a string of length 1.

Returns:

  • (Boolean) 


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# File 'lib/iso9660.rb', line 489

def ISO9660.dchar?(dchar)
  if dchar.class == Fixnum
    # Is an integer. Is it too large?
    if dchar > 255 then return false end
    # Not integer. Should be a string of length one then.
    # We'll turn it into an integer.
  elsif
    dchar = dchar[0]
  else
    return false
  end
  return Rubyiso9660::dchar?(dchar)
end

.dirname_valid?(path) ⇒ Boolean

Returns: bool

Check that path is a valid ISO-9660 directory name.

A valid directory name should not start out with a slash (/), dot (.) or null byte, should be less than 37 characters long, have no more than 8 characters in a directory component which is separated by a /, and consist of only DCHARs.

true is returned if path is valid.

Returns:

  • (Boolean) 


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# File 'lib/iso9660.rb', line 458

def ISO9660.dirname_valid?(path)
  return Rubyiso9660::dirname_valid?(path)
end

.name_translate(filename, joliet_level = 0) ⇒ Object

Returns: String

Convert an ISO-9660 file name of the kind that is that stored in a ISO 9660 directory entry into what’s usually listed as the file name in a listing. Lowercase name if no Joliet Extension interpretation. Remove trailing ;1’s or .;1’s and turn the other ;‘s into version numbers.

If joliet_level is not given it is 0 which means use no Joliet Extensions. Otherwise use the specified the Joliet level.

The translated string is returned and it will be larger than the input filename.



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# File 'lib/iso9660.rb', line 538

def ISO9660.name_translate(filename, joliet_level=0)
  return Rubyiso9660::name_translate_ext(filename, joliet_level)
end

.pathname_isofy(path, version = 1) ⇒ Object

Take path and a version number and turn that into a ISO-9660 pathname. (That’s just the pathname followed by ‘;’ and the version number. For example, mydir/file.ext -> MYDIR/FILE.EXT;1 for version 1. The resulting ISO-9660 pathname is returned.



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# File 'lib/iso9660.rb', line 522

def ISO9660.pathname_isofy(path, version=1)
  return Rubyiso9660::pathname_isofy(path, version)
end

.pathname_valid?(path) ⇒ Boolean

Returns: bool

Check that path is a valid ISO-9660 pathname.

A valid pathname contains a valid directory name, if one appears and the filename portion should be no more than 8 characters for the file prefix and 3 characters in the extension (or portion after a dot). There should be exactly one dot somewhere in the filename portion and the filename should be composed of only DCHARs.

true is returned if path is valid.

Returns:

  • (Boolean) 


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# File 'lib/iso9660.rb', line 514

def ISO9660.pathname_valid?(path)
  return Rubyiso9660::pathname_valid?(path)
end

.strncpy_pad(name, len, check) ⇒ Object

Returns: String

Pad string ‘name’ with spaces to size len and return this. If ‘len’ is less than the length of ‘src’, the return value will be truncated to the first len characters of ‘name’.

‘name’ can also be scanned to see if it contains only ACHARs, DCHARs, or 7-bit ASCII chars, and this is specified via the ‘check’ parameter. If the I<check> parameter is given it must be one of the ‘nocheck’, ‘7bit’, ‘achars’ or ‘dchars’. Case is not significant.



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# File 'lib/iso9660.rb', line 558

def ISO9660.strncpy_pad(name, len, check)
  if not ISO9660.check_types().member?(check)
    puts "*** A CHECK parameter must be one of %s\n" % ISO9660.check_types.keys().join(',')
    return nil
  end
  return Rubyiso9660::strncpy_pad(name, len, ISO9660.check_types()[check])
end