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--- Linux-specific implementation of filesystem and platform abstractions.
local linux = {}
local fs = require("luarocks.fs")
local dir = require("luarocks.dir")
function linux.is_dir(file)
file = fs.absolute_name(file)
file = dir.normalize(file) .. "/."
local fd, _, code = io.open(file, "r")
if code == 2 then -- "No such file or directory"
return false
end
if code == 20 then -- "Not a directory", regardless of permissions
return false
end
if code == 13 then -- "Permission denied", but is a directory
return true
end
if fd then
local _, _, ecode = fd:read(1)
fd:close()
if ecode == 21 then -- "Is a directory"
return true
end
end
return false
end
function linux.is_file(file)
file = fs.absolute_name(file)
if fs.is_dir(file) then
return false
end
file = dir.normalize(file)
local fd, _, code = io.open(file, "r")
if code == 2 then -- "No such file or directory"
return false
end
if code == 13 then -- "Permission denied", but it exists
return true
end
if fd then
fd:close()
return true
end
return false
end
return linux
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