meson/mesonbuild/scripts/__init__.py

# SPDX-License-Identifier: Apache-2.0
# Copyright 2016 The Meson development team

from pathlib import PurePath

def destdir_join(d1: str, d2: str) -> str:
    if not d1:
        return d2
    # c:\destdir + c:\prefix must produce c:\destdir\prefix
    return str(PurePath(d1, *PurePath(d2).parts[1:]))
Use SPDX-License-Identifier consistently This replaces all of the Apache blurbs at the start of each file with an `# SPDX-License-Identifier: Apache-2.0` string. It also fixes existing uses to be consistent in capitalization, and to be placed above any copyright notices. This removes nearly 3000 lines of boilerplate from the project (only python files), which no developer cares to look at. SPDX is in common use, particularly in the Linux kernel, and is the recommended format for Meson's own `project(license: )` field 2023-12-14 03:38:41 +08:00			`# SPDX-License-Identifier: Apache-2.0`
scripts: Use destdir_join fix for all DESTDIR prefixing (#598) 2016-06-17 01:43:23 +08:00			`# Copyright 2016 The Meson development team`

Fix destdir_join The old implementation assumed a path is of Windows iff the second character is a colon. However, that is not always true. First, a colon can be included in a non-Windows path. For example, it is totally fine to have a directory named ':' on Linux 5.17.0 tmpfs. Second, a Windows path may start with \\ for UNC or extended length. Use pathlib to handle all of these cases. 2022-06-18 19:57:44 +08:00			`from pathlib import PurePath`

typing: fully annotate scripts 2020-08-30 03:23:43 +08:00			`def destdir_join(d1: str, d2: str) -> str:`
simplify destdir_join for readability We can immediately short-circuit if there is no destdir, as we simply return the prefix unchanged. If there is some kind of destdir and the prefix contains a drive letter, then no matter what we need to remove the drive letter before joining. Technically, if the destdir is a relative path e.g. `destdir\` and `C:\prefix`, we should still install to `destdir\prefix` without the drive letter. But... we also guarantee that destdir is an absolute path (or empty) anyway. And even if we didn't, non-absolute destdir is a broken concept for a variety of complicated reasons. So none of this matters in practice. One way or another, we don't need to actually check whether destdir is an absolute path before cutting off the prefix drive letter. 2021-11-24 12:58:46 +08:00			`if not d1:`
			`return d2`
scripts: Use destdir_join fix for all DESTDIR prefixing (#598) 2016-06-17 01:43:23 +08:00			`# c:\destdir + c:\prefix must produce c:\destdir\prefix`
Fix destdir_join The old implementation assumed a path is of Windows iff the second character is a colon. However, that is not always true. First, a colon can be included in a non-Windows path. For example, it is totally fine to have a directory named ':' on Linux 5.17.0 tmpfs. Second, a Windows path may start with \\ for UNC or extended length. Use pathlib to handle all of these cases. 2022-06-18 19:57:44 +08:00			`return str(PurePath(d1, *PurePath(d2).parts[1:]))`