mirror of
https://gitlab.kitware.com/cmake/cmake.git
synced 2026-10-01 04:03:24 +03:00
Mickaël Germain
860583ceac
Testing whether one path is a prefix of another is possible today with
cmake_path(IS_PREFIX), but the idiom needs a separate statement plus a
scratch variable and takes the prefix as a variable name, so projects
reach for if(path MATCHES "^${prefix}") instead. That is wrong whenever
the prefix contains a regex metacharacter, and it accepts siblings,
because '^/a/b' matches '/a/bc'.
Add a binary operator where the left operand is the candidate prefix and
the right is the path, matching the operand order of cmake_path(IS_PREFIX)
and $<PATH:IS_PREFIX> so that the same operation reads the same way on all
three surfaces. Neither operand is normalized, matching the default of
cmake_path(IS_PREFIX) and the existing PATH_EQUAL operator, so '.' and
'..' are compared as ordinary components. The test is non-strict, purely
lexical, and applies no relative-to-absolute reconciliation.
Add policy CMP0222 for compatibility, modeled on CMP0139. The keyword
is consumed as an operator only when it appears in the second argument
slot, so a variable named PATH_IS_PREFIX keeps working in unary and
left-operand position. What the policy covers is such a variable
appearing after another token, as in if(NOT PATH_IS_PREFIX AND other),
which becomes a configure error under NEW.
Since the operator is an if() spelling of cmake_path(IS_PREFIX) and shares
its implementation, test it by asserting the two agree over a corpus of
inputs rather than by restating expected values. Those are pinned by the
cmake_path(IS_PREFIX) test, so the operator's tests stay limited to what
has no command equivalent, and no platform branching is needed because
parity holds whatever the host path model answers.
Fixes: #28040
34 lines
847 B
CMake
34 lines
847 B
CMake
include(RunCMake)
|
|
|
|
run_cmake(InvalidArgument1)
|
|
run_cmake(InvalidArgumentInParenthesis)
|
|
run_cmake(exists)
|
|
if(NOT MSYS)
|
|
# permissions and symbolic links are broken on MSYS
|
|
# if real user is root, tests are irrelevant
|
|
get_unix_uid(uid)
|
|
if(NOT uid STREQUAL "0")
|
|
run_cmake_with_options(FilePermissions -DNO_WRITABLE_DIR=${CMake_TEST_NO_WRITE_ONLY_DIR})
|
|
endif()
|
|
endif()
|
|
run_cmake(IsDirectory)
|
|
run_cmake(IsDirectoryLong)
|
|
run_cmake(PathIsPrefix)
|
|
run_cmake(duplicate-deep-else)
|
|
run_cmake(duplicate-else)
|
|
run_cmake(duplicate-else-after-elseif)
|
|
run_cmake(elseif-message)
|
|
run_cmake(empty-elseif-warning)
|
|
run_cmake(misplaced-elseif)
|
|
|
|
run_cmake(unbalanced-parenthesis)
|
|
|
|
run_cmake(MatchesSelf)
|
|
run_cmake(IncompleteMatches)
|
|
run_cmake(IncompleteMatchesFail)
|
|
|
|
run_cmake(TestNameThatExists)
|
|
run_cmake(TestNameThatDoesNotExist)
|
|
|
|
run_cmake_script(AndOr)
|