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require 'code/extensions/basic'
class Directory
@@filter = nil
BAD_TIME = Time.at(1)
def initialize(path, allow_delay=false)
@path = path
@pos = 0
@files = []
@file_size = 0
@pointed_file = nil
@sort_time = BAD_TIME
@width = 1000
@read = false
@free_space = nil
@empty = true
@scheduled = false
refresh
end
def inspect
"<Directory: #{path}>"
end
alias to_s inspect
def read_dir
@mtime = File.mtime(@path)
log @path
files = Dir.new(@path).to_a rescue []
if Option.show_hidden
files -= ['.', '..']
else
files.reject!{|x| x[0] == ?. or x == 'lost+found'}
end
if @@filter
files.reject!{|x| x !~ @@filter}
end
if files.empty?
files = ['.']
end
@files_raw = files.map{|bn| File.join(@path, bn)}
files.map!{|basename| Entry.new(@path, basename)}
@files = files
end
attr_reader(:path, :files, :pos, :width, :files_raw,
:file_size, :read, :sort_time)
attr_accessor(:scheduled)
def self.filter=(x)
@@filter = Regexp.new(x, Regexp::IGNORECASE) rescue nil
end
def self.filter() @@filter end
def schedule_resort() @sort_time = BAD_TIME end
def scheduled?() @scheduled end
def read?() @read end
def pos=(x)
@pos = x
make_sure_cursor_is_in_range()
@pointed_file = @files_raw[x]
resize
end
def make_sure_cursor_is_in_range()
if @files.size <= 1 or @pos < 0
@pos = 0
elsif @pos > @files.size - 1
@pos = @files.size - 1
end
end
def find_file(x)
x = File.basename(x)
files.each_with_index do |file, i|
if file.basename == x
self.pos = i
end
end
end
def empty?()
Dir.entries(@path).size <= 2
end
def restore()
for f in @files
f.marked = false
end
end
def pointed_file=(x)
if @files_raw.include?(x)
@pointed_file = x
@pos = @files_raw.index(x)
else
self.pos = 0
end
resize
end
def free_space()
if @free_space then return @free_space end
@free_space = 0
out = `df -PB 1 #{~path}`
out = out[out.index("\n")+1, out.index("\n", out.index("\n"))]
if out =~ /^[^\s]+ \s+ \d+ \s+ \d+ \s+ (\d+) \s+/x
@free_space = $1.to_i
end
@free_space
end
def size() @files.size end
def resize()
pos = Fm.get_offset(self, lines)
if @files.empty?
@width = 0
else
@width = 0
@files[pos, lines-2].each_with_index do |fn, ix|
ix += pos
sz = fn.displayname.size + fn.infostring.size + 2
@width = sz + 3 if @width < sz
end
# @width = @files[pos,lines-2].map{|x| File.basename(x).size}.max
end
end
def get_file_info()
@file_size = 0
@files.each do |f|
f.refresh
@file_size += f.size if f.file?
end
@read = true
schedule_resort
end
def refresh(info=false)
oldfile = @pointed_file
if File.mtime(@path) != @mtime
read_dir
end
if info
log("getting file info of #{@path}")
get_file_info
end
sort_if_needed
if @files.include? oldfile
self.pointed_file = oldfile
end
end
def schedule()
Scheduler << self
end
def refresh!()
oldfile = @pointed_file
read_dir
get_file_info
sort
if @files.include? oldfile
self.pointed_file = oldfile
end
end
def sort_if_needed
if @sort_time < Fm.sort_time
sort
end
end
def sort_sub(x, y)
case Option.sort
when :ext
x.ext <=> y.ext
when :type
x.ext.filetype <=> y.ext.filetype
when :size
x.size <=> y.size
when :ctime
x.ctime <=> y.ctime
when :mtime
x.mtime <=> y.mtime
when :name, Object
x.basename <=> y.basename
end
end
def sort()
@sort_time = Time.now
files = @files.sort {|x,y|
if Option.list_dir_first
if x.dir?
if y.dir? then sort_sub(x, y) else -1 end
else
if y.dir? then 1 else sort_sub(x, y) end
end
else
sort_sub(x, y)
end
}
files.reverse! if Option.sort_reverse
@files_raw = files.map{|x| x.to_s}
@files = files
end
def changed?
File.mtime(@path) != @mtime
end
end
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