Class: Tb::Cmd::Ls

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(y, opts) ⇒ Ls

Returns a new instance of Ls.



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# File 'lib/tb/cmd_ls.rb', line 82

def initialize(y, opts)
  @y = y
  @opts = opts
  @fail = false
end

Instance Attribute Details

#fail ⇒ Object (readonly)

Returns the value of attribute fail.



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# File 'lib/tb/cmd_ls.rb', line 87

def fail
  @fail
end

Instance Method Details

#ls_dir(dir, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 107

def ls_dir(dir, st)
  begin
    entries = Dir.entries(dir)
  rescue SystemCallError
    @fail = true
    warn "tb: #{$!}: #{dir}"
    return
  end
  entries.map! {|filename| real_pathname_string(filename) }
  entries = entries.sort_by {|filename| Tb::Func.smart_cmp_value(filename) }
  if @opts[:a] || @opts[:A]
    entries1, entries2 = entries.partition {|filename| /\A\./ =~ filename }
    entries0, entries1 = entries1.partition {|filename| filename == '.' || filename == '..' }
    entries0.sort!
    if @opts[:A]
      entries = entries1 + entries2
    else
      entries = entries0 + entries1 + entries2
    end
  else
    entries.reject! {|filename| /\A\./ =~ filename }
  end
  if !@opts[:R]
    entries.each {|filename|
      ls_file(dir + filename, nil)
    }
  else
    dirs = []
    entries.each {|filename|
      path = dir + filename
      st2 = ls_get_stat(path)
      next if !st2
      if filename == '.' || filename == '..'
        if dir.to_s != '.'
          path = Pathname(dir.to_s + "/" + filename)
        end
        ls_file(path, st2)
      elsif st2.directory?
        dirs << [path, st2]
      else
        ls_file(path, st2)
      end
    }
    dirs.each {|path, st2|
      ls_file(path, st2)
      ls_dir(path, st2)
    }
  end
end

#ls_file(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 157

def ls_file(path, st)
  if 0 < @opts[:l]
    if !st
      st = ls_get_stat(path)
      return if !st
    end
    @y.yield ls_long_info(path, st)
  else
    @y.yield({'filename' => path.to_s})
  end
end

#ls_get_stat(path) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 169

def ls_get_stat(path)
  begin
    st = path.lstat
  rescue SystemCallError
    @fail = true
    warn "tb: #{$!}: #{path}"
    return nil
  end
  st
end

#ls_info_atime(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 261

def ls_info_atime(path, st)
  if 1 < @opts[:l]
    st.atime.iso8601(9)
  else
    st.atime.iso8601
  end
end

#ls_info_blksize(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 202

def ls_info_blksize(path, st) st.blksize end

#ls_info_blocks(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 203

def ls_info_blocks(path, st) st.blocks end

#ls_info_ctime(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 277

def ls_info_ctime(path, st)
  if 1 < @opts[:l]
    st.ctime.iso8601(9)
  else
    st.ctime.iso8601
  end
end

#ls_info_dev(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 194

def ls_info_dev(path, st) sprintf("0x%x", st.dev) end

#ls_info_filemode(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 205

def ls_info_filemode(path, st)
  entry_type =
    case st.ftype
    when "file" then '-'
    when "directory" then 'd'
    when "characterSpecial" then 'c'
    when "blockSpecial" then 'b'
    when "fifo" then 'p'
    when "link" then 'l'
    when "socket" then 's'
    when "unknown" then '?'
    else '?'
    end
  m = st.mode
  sprintf("%s%c%c%c%c%c%c%c%c%c",
    entry_type,
    (m & 0400 == 0 ? ?- : ?r),
    (m & 0200 == 0 ? ?- : ?w),
    (m & 0100 == 0 ? (m & 04000 == 0 ? ?- : ?S) :
                     (m & 04000 == 0 ? ?x : ?s)),
    (m & 0040 == 0 ? ?- : ?r),
    (m & 0020 == 0 ? ?- : ?w),
    (m & 0010 == 0 ? (m & 02000 == 0 ? ?- : ?S) :
                     (m & 02000 == 0 ? ?x : ?s)),
    (m & 0004 == 0 ? ?- : ?r),
    (m & 0002 == 0 ? ?- : ?w),
    (m & 0001 == 0 ? (m & 01000 == 0 ? ?- : ?T) :
                     (m & 01000 == 0 ? ?x : ?t)))
end

#ls_info_filename(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 285

def ls_info_filename(path, st)
  path
end

#ls_info_gid(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 199

def ls_info_gid(path, st) st.gid end

#ls_info_group(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 248

def ls_info_group(path, st)
  gid = st.gid
  begin
    gr = Etc.getgrgid(gid)
  rescue ArgumentError
  end
  if gr
    gr.name
  else
    gid.to_s
  end
end

#ls_info_ino(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 195

def ls_info_ino(path, st) st.ino end

#ls_info_mode(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 196

def ls_info_mode(path, st) sprintf("0%o", st.mode) end

#ls_info_mtime(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 269

def ls_info_mtime(path, st)
  if 1 < @opts[:l]
    st.mtime.iso8601(9)
  else
    st.mtime.iso8601
  end
end

#ls_info_nlink(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 197

def ls_info_nlink(path, st) st.nlink end

#ls_info_rdev(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 200

def ls_info_rdev(path, st) sprintf("0x%x", st.rdev) end

#ls_info_size(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 201

def ls_info_size(path, st) st.size end

#ls_info_symlink(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 289

def ls_info_symlink(path, st)
  return nil if !st.symlink?
  begin
    File.readlink(path)
  rescue SystemCallError
    @fail = true
    warn "tb: #{$!}: #{path}"
    return nil
  end
end

#ls_info_uid(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 198

def ls_info_uid(path, st) st.uid end

#ls_info_user(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 235

def ls_info_user(path, st)
  uid = st.uid
  begin
    pw = Etc.getpwuid(uid)
  rescue ArgumentError
  end
  if pw
    pw.name
  else
    uid.to_s
  end
end

#ls_long_header ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 180

def ls_long_header
  if 1 < @opts[:l]
    %w[dev ino mode filemode nlink uid user gid group rdev size blksize blocks atime mtime ctime filename symlink]
  else
    %w[filemode nlink user group size mtime filename symlink]
  end
end

#ls_long_info(path, st) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 188

def ls_long_info(path, st)
  Hash[ls_long_header.map {|info_type|
    [info_type, self.send("ls_info_#{info_type}", path, st)]
  }]
end

#ls_run(path) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 97

def ls_run(path)
  st = ls_get_stat(path)
  return if !st
  if st.directory?
    ls_dir(path, st)
  else
    ls_file(path, st)
  end
end

#real_pathname_string(str) ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 300

def real_pathname_string(str)
  str.dup.force_encoding("ASCII-8BIT")
end

#set_header ⇒ Object 



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# File 'lib/tb/cmd_ls.rb', line 89

def set_header
  if @opts[:l] == 0
    @y.set_header ['filename']
  else
    @y.set_header(ls_long_header())
  end
end