How to get long filename from ARGV - ruby

Question

I want to make a tool that takes some filenames as parameters, but when I use this code:
ARGV.each do|a|
puts "Argument: #{a}"
end
and I use drag and drop or "send to" in Windows, I get the short filename.
So a file like "C:\Ruby193\bin\test\New Text Document.txt" becomes
C:\Ruby193\bin\test\NEWTEX~1.TXT as the argument.
There is no problem when I run the script from the commandline, with the longfilenames as parameters.
How do i get the long filename when i use drag and drop or send to?

Answer 1

http://www.varioustopics.com/ruby/518646-rre-ruby-cygwin-and-paths.html
require 'find'
require 'fileutils'
require 'Win32API'
def get_long_win32_filename(short_name)
max_path = 1024
long_name = " " * max_path
lfn_size = Win32API.new("kernel32", "GetLongPathName", ['P','P','L'],'L').call(short_name, long_name, max_path)
return (1..max_path).include?(lfn_size) ? long_name[0..lfn_size-1] : short_name
end
ARGV.each do|a|
puts a
puts get_long_win32_filename(a)
end

Answer 2

I don't know if it is possible to change the argument you recieve on a drag and drop, but you could use the Win32 getLongPathName() function, using the Ruby Win32 bindings
--edit--
Including #peter's solution formatted for readability:
require 'find'
require 'fileutils'
require 'Win32API'
def get_long_win32_filename(short_name)
max_path = 1024
long_name = " " * max_path
lfn_size = Win32API.new("kernel32",
"GetLongPathName", ['P','P','L'],'L').call(short_name, long_name, max_path)
return (1..max_path).include?(lfn_size) ? long_name[0..lfn_size-1] : short_name
end
ARGV.each do|a|
puts a
puts get_long_win32_filename(a)
end

Answer 3

I learned a lot trying to figure this out!
However, #peter beat me to it with a much simpler solution.
Here is mine, in case someone finds it useful. file_get_long_name.rb
I got the idea from: an archived vb-world.net article and converted it to ruby.
require 'win32ole'
def get_long_filename(shortpath, fso = WIN32OLE.new("Scripting.FileSystemObject"))
path = case
when fso.FolderExists(shortpath)
fso.GetFolder(fso.GetAbsolutePathName(shortpath))
when fso.FileExists(shortpath)
fso.GetFile(fso.GetAbsolutePathName(shortpath))
else
return nil
end
parts = path.Path.split(/\\/)
working = fso.GetDrive(parts.shift).RootFolder
longpath = working.Path
parts.each do |part|
temppath = fso.BuildPath(longpath, part)
working = fso.GetFolder(longpath)
if fso.FolderExists(temppath)
working.SubFolders.each do |sub|
longpath = fso.BuildPath(longpath, sub.Name) if part== sub.ShortName || part == sub.Name
end
elsif fso.FileExists(temppath)
working.Files.each do |sub|
longpath = fso.BuildPath(longpath, sub.Name) if part== sub.ShortName || part == sub.Name
end
end
end
longpath
end
fso = WIN32OLE.new("Scripting.FileSystemObject")
short = "C:\\DOCUME~1\\jamal\\Desktop\\NEWTEX~1.TXT"
long = get_long_filename(short, fso)
p long
# ==> "C:\\Documents and Settings\\jamal\\Desktop\\New Text Document.txt"

Answer 4

I found the reason my script receaved short filenames, i had done a registry patch to enable the drag and drop on ruby scripts and schortcuts as follows
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\rbfile\ShellEx\DropHandler]
#="{86C86720-42A0-1069-A2E8-08002B30309D}"
[HKEY_CLASSES_ROOT\rbwfile\ShellEx\DropHandler]
#="{86C86720-42A0-1069-A2E8-08002B30309D}"
[HKEY_CLASSES_ROOT\RubyFile\ShellEx\DropHandler]
#="{86C86720-42A0-1069-A2E8-08002B30309D}"
[HKEY_CLASSES_ROOT\RubyWFile\ShellEx\DropHandler]
#="{86C86720-42A0-1069-A2E8-08002B30309D}"
But it had to be the following for LONG filenames
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\rbfile\ShellEx\DropHandler]
#="{60254CA5-953B-11CF-8C96-00AA00B8708C}"
[HKEY_CLASSES_ROOT\rbwfile\ShellEx\DropHandler]
#="{60254CA5-953B-11CF-8C96-00AA00B8708C}"
[HKEY_CLASSES_ROOT\RubyFile\ShellEx\DropHandler]
#="{60254CA5-953B-11CF-8C96-00AA00B8708C}"
[HKEY_CLASSES_ROOT\RubyWFile\ShellEx\DropHandler]
#="{60254CA5-953B-11CF-8C96-00AA00B8708C}"