I'm writing a build script, and if the directory the user's building the script contains spaces, everything falls apart. To go around that, I thought of using 8.3 filenames so that drive:\Documents and setttings\whatever
becomes drive:\Docume~1\whatever
. The current directory can be found by querying the environment variable %CD%.
How do I transform %CD% into a short file path?
The 8.3 filename can be obtained using the Kernel32. dll function GetShortPathName. Although there is no compulsory algorithm for creating the 8.3 name from an LFN, Windows uses the following convention: If the LFN is 8.3 uppercase, no LFN will be stored on disk at all.
You will be fine as long as you modify the batch file after the current executing line position byte offset at the end of the most recently parsed line of code. If you modify it before then it will start doing strange things (repeating commands etc..).
for %f in ("%cd%") do @echo %~sf
Edit: don't forget to use %% if you are using it in batch file. like this
for %%f in ("%cd%") do @echo %%~sf
On my machine:
C:\Users\preet>cd "\Program Files"
C:\Program Files>for %f in ("%cd%") do @echo %~sf
C:\PROGRA~1
Other options:
In addition, substitution of FOR variable references has been enhanced. You can now use the following optional syntax:
%~I - expands %I removing any surrounding quotes (")
%~fI - expands %I to a fully qualified path name
%~dI - expands %I to a drive letter only
%~pI - expands %I to a path only
%~nI - expands %I to a file name only
%~xI - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
environment variable and expands %I to the
fully qualified name of the first one found.
If the environment variable name is not
defined or the file is not found by the
search, then this modifier expands to the
empty string
The modifiers can be combined to get compound results:
%~dpI - expands %I to a drive letter and path only
%~nxI - expands %I to a file name and extension only
%~fsI - expands %I to a full path name with short names only
%~dp$PATH:I - searches the directories listed in the PATH
environment variable for %I and expands to the
drive letter and path of the first one found.
%~ftzaI - expands %I to a DIR like output line
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