oliver-joos
commented
11 years ago Here is my (pre-alpha!) prototype of an IEC-Size column. Save it as "~/.local/share/caja-python/extensions/iec-size-column.py" and restart Caja, e.g. with Terminal command "caja -q".
import os
from stat import *
import urllib
import caja
formats = ('%d bytes', '%.1f KiB', '%.1f MiB', '%.1f GiB')
class IECSizeColumnExtension(caja.ColumnProvider, caja.InfoProvider):
def __init__(self):
pass
def get_columns(self):
col = caja.Column("CajaPython::iec_size_column",
"iec_size",
"Size (IEC)",
"Object sizes in KiB,Mib,GiB")
col.set_property('xalign', 1) # right-aligned
return (col, )
def update_file_info(self, file):
if file.get_uri_scheme() != 'file':
return
filename = urllib.unquote(file.get_uri()[7:])
file_stat = os.stat(filename)
if S_ISDIR(file_stat.st_mode):
# TODO: count items in directory
file.add_string_attribute('iec_size', '? items')
else:
filesize = int(file_stat.st_size)
for format in formats:
if filesize < 1024:
break
filesize /= 1024.0
file.add_string_attribute('iec_size', format % filesize)
stefano-k
133794m3r
infirit
Caja 1.4.0 in List View mode shows filesizes with 1000000 bytes = 1000kB = 1 MB. Nautilus 2.x showed 1048576 bytes = 1024 KB = 1 MB, which was wrong indeed. Only the uppercase 'K' was a hint for factor 1024. An IEC standard defines special binary unit prefixes: 10485761 bytes = 1024 KiB = 1 MiB.
The current solution in Caja is correct, but IMHO not optimal in many situations:
I am sure that there are arguments for kB/MB/GB too and would not like to discuss these. Therefore I propose to implement both! I hacked together a caja-python extension for an IEC Size column (see image). But I would prefer a special checkbox in Cajas preferences that could switch other size displays too, like in the status bar or properties dialogs.