Question

I’m writing plugins for sketch up. I cannot find a simple way to append a text file from the My Documents directory on Windows. The problems I am having are:

• opening with the current username
• differences between Windows versions.

I need the code to open a file in append mode in My Documents on Windows 7 on a 32bit machine.

Answer 1

file = File.open(ENV['userprofile'] + "\\My Documents\\file.txt", "a")
file.puts "text to append"
file.close

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EDIT:
Default location of user’s documents is:

On Windows 98 and Windows Me
C:\My Documents
On Windows 2000 and Windows XP
%USERPROFILE%\My Documents
On Windows Vista and later
%USERPROFILE%\Documents

Non-English versions of Windows XP or earlier will use directory names
appropriate to that language.

You can find the right path on Non-English systems in Windows Registry:

require 'win32/registry'
reg_path = 'Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders'
reg = Win32::Registry::HKEY_CURRENT_USER.open( reg_path )
right_path = reg['Personal']    # => C:\Documents and Settings\addo\Dokumenty