I just posted my solution in S.O!
The following method allows you to easily add and modify your list of extensions/applications. Please note that you just need to edit the values placed inside the first FOR command; the rest of the program is the solution you don't need to care of...
rem Define the list of extensions per application:
rem (this is the only part that you must edit)
for %%a in ("cadfile=.dwg .dxf .dwf"
"gsfile=.ps .eps .epi .epsp"
"xxxxxx=.xx .xx1 .xx2") do (
rem The rest of the code is commented just to be clear,
rem but you may omit the reading of this part if you wish
rem Separate application from its extensions
rem and create a vector called "ext" with an element for each pair
for /F "tokens=1,2 delims==" %%b in (%%a) do (
rem For example: %%b=cadfile, %%c=.dwg .dxf .dwf
for %%d in (%%c) do set "ext[%%d]=%%b"
rem For example: set "ext[.dwg]=cadfile", set "ext[.dxf]=cadfile", set "ext[.dwf]=cadfile"
rem In the next line: set "ext[.ps]=gsfile", set "ext[.eps]=gsfile", etc...
rem Now process the extension of the file given in the parameter:
if defined ext[%~x1] goto !ext[%~x1]!
echo There is no registered conversion tool for %~x1 extension
echo Execute cadfile on %1 file
rem cadfile %1
echo Execute gsfile on %1 file
rem gsfile %1
If each conversion tool is executed in the same way and don't require additional parameters (just the filename), then you may omit the individual sections and directly execute the conversion tools this way:
if defined ext[%~x1] !ext[%~x1]! %1
For further explanations on array concept
, see this post