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os/fs.c: remove os_file_is_readonly()

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os_file_is_readonly() in its current form is equivalent to
!os_file_is_writable(). This does not appear to be a bug, because Vim's
use of check_file_readonly() (which we changed to os_file_is_readonly())
is equivalent to !os_file_is_writable() in every case.

os_file_is_readonly() also fails this test:

    returns false if the file is non-read, non-write

A more useful form would define behavior under these cases:

  - path is executable (but not writable)
  - path is non-existent
  - path is directory

But there is no reason for os_file_is_readonly() to exist, so remove it.
This commit is contained in:
Justin M. Keyes
2015-08-16 23:13:55 -04:00
parent d5cd15e67f
commit 8f09fa1a49
4 changed files with 2 additions and 64 deletions
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53
test/unit/os/fs_spec.lua
View File

@@ -229,10 +229,6 @@ describe('fs function', function()
return res
end
local function os_file_is_readonly(filename)
return fs.os_file_is_readonly((to_cstr(filename)))
end
local function os_file_is_readable(filename)
return fs.os_file_is_readable((to_cstr(filename)))
end
@@ -324,55 +320,6 @@ describe('fs function', function()
end
end)
describe('os_file_is_readonly', function()
-- pending('returns ? if the file does not exist', function() end)
-- pending('returns ? if the path is a directory', function() end)
-- pending('returns ? if the file is executable', function() end)
it('returns false if the file is non-read, non-write', function()
local perm = os_getperm('unit-test-directory/test.file')
perm = unset_bit(perm, ffi.C.kS_IWUSR)
perm = unset_bit(perm, ffi.C.kS_IWGRP)
perm = unset_bit(perm, ffi.C.kS_IWOTH)
perm = unset_bit(perm, ffi.C.kS_IRUSR)
perm = unset_bit(perm, ffi.C.kS_IRGRP)
perm = unset_bit(perm, ffi.C.kS_IROTH)
eq(OK, (os_setperm('unit-test-directory/test.file', perm)))
eq(1, os_file_is_writable('unit-test-directory/test.file'))
eq(false, os_file_is_readonly('unit-test-directory/test.file'))
end)
it('returns false if the file is write-only', function()
local perm = os_getperm('unit-test-directory/test.file')
perm = set_bit(perm, ffi.C.kS_IWUSR)
perm = set_bit(perm, ffi.C.kS_IWGRP)
perm = set_bit(perm, ffi.C.kS_IWOTH)
perm = unset_bit(perm, ffi.C.kS_IRUSR)
perm = unset_bit(perm, ffi.C.kS_IRGRP)
perm = unset_bit(perm, ffi.C.kS_IROTH)
eq(OK, (os_setperm('unit-test-directory/test.file', perm)))
eq(1, os_file_is_writable('unit-test-directory/test.file'))
eq(false, os_file_is_readonly('unit-test-directory/test.file'))
end)
it('returns true if the file is read-only', function()
local perm = os_getperm('unit-test-directory/test.file')
local perm_orig = perm
perm = unset_bit(perm, ffi.C.kS_IWUSR)
perm = unset_bit(perm, ffi.C.kS_IWGRP)
perm = unset_bit(perm, ffi.C.kS_IWOTH)
eq(OK, (os_setperm('unit-test-directory/test.file', perm)))
eq(true, os_file_is_readonly('unit-test-directory/test.file'))
eq(OK, (os_setperm('unit-test-directory/test.file', perm_orig)))
end)
it('returns false if the file is read-write', function()
eq(false, os_file_is_readonly('unit-test-directory/test.file'))
end)
end)
describe('os_file_is_readable', function()
it('returns false if the file is not readable', function()