[英]Convert long filename to short filename (8.3)
I want to convert long filenames/path to short filenames (8.3). 我想将长文件名/路径转换为短文件名(8.3)。 I'm developing a script that calls a command line tool that only accepts short filenames.
我正在开发一个调用命令行工具的脚本,该工具只接受短文件名。
So i need to convert 所以我需要转换
C:\\Ruby193\\bin\\test\\New Text Document.txt
to 至
C:\\Ruby193\\bin\\test\\NEWTEX~1.TXT
So far i found How to get long filename from ARGV which uses WIN32API to convert short to long filenames (the opposite of what I want to achieve). 到目前为止,我发现如何从ARGV获取长文件名,它使用WIN32API将短文件名转换为长文件名(与我想要实现的相反)。
Is there any way to get the short filename in Ruby? 有没有办法在Ruby中获取短文件名?
You can do this using FFI ; 你可以用FFI做到这一点; there's actually an example that covers your exact scenario in their wiki under the heading "Convert a path to 8.3 style pathname":
实际上有一个例子涵盖了他们的wiki中标题为“将路径转换为8.3样式路径名”的确切场景:
require 'ffi'
module Win
extend FFI::Library
ffi_lib 'kernel32'
ffi_convention :stdcall
attach_function :path_to_8_3, :GetShortPathNameA, [:pointer, :pointer, :uint], :uint
end
out = FFI::MemoryPointer.new 256 # bytes
Win.path_to_8_3("c:\\program files", out, out.length)
p out.get_string # be careful, the path/file you convert to 8.3 must exist or this will be empty
This ruby code uses getShortPathName and don't need additional modules to be installed. 此ruby代码使用getShortPathName ,不需要安装其他模块。
def get_short_win32_filename(long_name)
require 'win32api'
win_func = Win32API.new("kernel32","GetShortPathName","PPL"," L")
buf = 0.chr * 256
buf[0..long_name.length-1] = long_name
win_func.call(long_name, buf, buf.length)
return buf.split(0.chr).first
end
The windows function you require is GetShortPathName . 您需要的Windows功能是GetShortPathName 。 You could use that in the same manner as described in your linked post.
您可以按照链接帖子中描述的相同方式使用它。
EDIT: sample usage of GetShortPathName (just as a quick example) - shortname will contain "C:\\LONGFO~1\\LONGFI~1.TXT" and returned value is 24. 编辑:GetShortPathName的示例用法(仅作为简单示例) - 短名称将包含“C:\\ LONGFO~1 \\ LONGFI~1.TXT”,返回值为24。
TCHAR* longname = "C:\\long folder name\\long file name.txt";
TCHAR* shortname = new TCHAR[256];
GetShortPathName(longname,shortname,256);
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