check if an executable exists
local df = require "lib/dtutils.file" local result = df.check_if_bin_exists(bin)
bin - string - the binary to check for
check_if_bin_exists checks to see if the specified binary exists. check_if_bin_exists looks for an executable in the following order:
If an executable preference is registered, then it’s checked to make sure it’s a file, exists, and is executable. If it passes all these tests it is returned to the caller. On non-windows operating systems a windows binary can be specified and the wine installation will be checked for the executable.
If an executable preference doesn’t exist or a test fails then an attempt is made to find the file in an operating system specific manner:
- unix or linux
- the user’s path is checked for a matching binrary using the which command
- first the user’s path is checked for a matching binrary using the which command
- if the executable isn’t found a search of the /Applications directory is performed
- the user’s path is checked using the where command
- if the executable isn’t found, then C:\Program Files is searched for the executable
- if the executable isn’t found, then C:\Program Files (x86) is searched
- unix or linux
result - string - the sanitized path of the binary, false if not found
it still can’t find GIMP on windows. GIMP on windows is installed in C:\Program Files\GIMP 2\bin\gimp-2.10.exe, if you use the installer from www.gimp.org. When check_if_bin_exists searches for GIMP it looks for gimp.exe. If the search was for gimp*exe then things like gimptool, gimp-debug-tool, gimp-console, etc. are found. Depending on who packaged gimp,there is an executable called gimp.exe which satisfies the search but is a GIMP launcher that exits immediately so the script returns and the image is not edited. Therefore, if you are a windows user, then you need to specify the location of the GIMP executable either from the Edit with GIMP script or using executable manager.
flickering windows - on windows every command must run in a window, so every time a script uses a system command a window is opened, the command is run, and the window is closed checking for a binary needs multiple system commands to find the file and then check it which causes “flickering windows”. If the flickering windows is too disturbing a lua preference is available in the settings to use the old check_if_bin_exists(). The old check_if_bin_exists() still causes flickering windows but it’s much less. The downside is that no searching is performed so the user has to specify the location of all executables.
20201225 - Added search capability and file checking to ensure it’s an executable - Merry Christmas