Hi,
What's going on here? Ths is on MacOS X 10.4.4. Looks like Dir#entries returns strings encoded with some encoding I didn't expect. How can I convert the string to UTF8?
$KCODE='UTF8'
require 'jcode'
s="äöüßÄÖÜ"
puts s.split(//).inspect
# => ["ä", "ö", "ü", "ß", "Ä", "Ö", "Ü"]
test_dir="/tmp/test"
`mkdir #{test_dir}`
`touch #{test_dir}/#{s}`
f=Dir.entries(test_dir).last
puts f.split(//).inspect
# => ["a", "", "o", "", "u", "", "ß", "A", "", "O", "", "U", ""]
Timo
Hi,
What's going on here? Ths is on MacOS X 10.4.4. Looks like
Dir#entries returns strings encoded with some encoding I didn't
expect. How can I convert the string to UTF8?
You have got a corrent UTF-8 string. Unlike Windows XP, Mac OS X
decomposes character components as much as possible (Sorry I forgot
the correct term for this policy). So what you got:
# => ["a", "", "o", "", "u", "", "ß", "A", "", "O", "", "U", ""]
is decomposed form of your string, a+umlaut, o+umlaut, etc.
matz.
On 1/13/06, Timo Hoepfner <th-dev@onlinehome.de> wrote:
Matz refers to Unicode Normalization Form D (NFD). According to
Technotes | Apple Developer Documentation (HFS Plus Volume
Format):
"HFS Plus stores strings fully decomposed and in canonical order. HFS
Plus compares strings in a case-insensitive fashion. Strings may
contain Unicode characters that must be ignored by this comparison.
For more details on these subtleties, see Unicode Subtleties."
-A
On 1/12/06, Yukihiro Matsumoto <matz@ruby-lang.org> wrote:
Hi,
On 1/13/06, Timo Hoepfner <th-dev@onlinehome.de> wrote:
> What's going on here? Ths is on MacOS X 10.4.4. Looks like
> Dir#entries returns strings encoded with some encoding I didn't
> expect. How can I convert the string to UTF8?You have got a corrent UTF-8 string. Unlike Windows XP, Mac OS X
decomposes character components as much as possible (Sorry I forgot
the correct term for this policy). So what you got:> # => ["a", "", "o", "", "u", "", "ß", "A", "", "O", "", "U", ""]
is decomposed form of your string, a+umlaut, o+umlaut, etc.
matz.
IIRC, that's the correct term. (Decomposed.)
-austin
On 12/01/06, Yukihiro Matsumoto <matz@ruby-lang.org> wrote:
On 1/13/06, Timo Hoepfner <th-dev@onlinehome.de> wrote:
What's going on here? Ths is on MacOS X 10.4.4. Looks like
Dir#entries returns strings encoded with some encoding I didn't
expect. How can I convert the string to UTF8?You have got a corrent UTF-8 string. Unlike Windows XP, Mac OS X
decomposes character components as much as possible (Sorry I forgot
the correct term for this policy). So what you got:
--
Austin Ziegler * halostatue@gmail.com
* Alternate: austin@halostatue.ca
How can I convert the string to UTF8?
You have got a corrent UTF-8 string. Unlike Windows XP, Mac OS X
decomposes character components as much as possible (Sorry I forgot
the correct term for this policy). So what you got:# => ["a", "", "o", "", "u", "", "ß", "A", "", "O", "", "U", ""]
is decomposed form of your string, a+umlaut, o+umlaut, etc.
Hi Matz, Austin and A.
Thanks for the clarification. Unicode is more comlex than it seems in the first place...
Nevertheless that doesn't solve my current problem. What I'm trying to do is to organize files within a directory into subfolders based on the first N characters of the file name. Here's my code (w/o error handling) which works fine for 8bit characters, but doesn't work for e.g. umlauts:
$KCODE='UTF8'
require 'jcode'
require 'pathname'
require 'fileutils'
wd, len = Pathname.new(ARGV[0]), ARGV[1].to_i
files=wd.children.reject{|f| f.directory?}
files.each do |f|
dir = wd + Pathname.new(f.basename.to_s.split(//)[0..len-1].join)
dir.mkdir unless dir.exist?
FileUtils.mv f, dir
end
I guess I have to recompose the decomposed filename somehow. Are there any tools for that in the standard library or somewhere else?
Thanks for your help,
Timo
Hi,
to answer my own question, here's a solution. Use the 'unicode' gem and change the line
dir = wd + Pathname.new(f.basename.to_s.split(//)[0..len-1].join)
to
dir = wd + Pathname.new(Unicode::compose(f.basename.to_s).split(//)[0..len-1].join)
Then it works.
Timo