Kconfiglib.git/kconfiglib.py, branch v10.32.0

Preserve symlinks when writing .config.old files

2018-12-08T03:54:47Z

if .config is a symlink, then the intention is probably to overwrite the target, but rename()ing the symlink to .config.old interferes with that. Use the shutil.copyfile() fallback instead if .config is a symlink.

Make {load,write}_config(filename=None) implement the standard behavior

2018-12-08T02:28:52Z

Make the previously obligatory 'filename' argument to load_config() and write_config() default to None, and have that implement the behavior you'd usually want: read/write either KCONFIG_CONFIG or ".config" if unset, and read the 'option defconfig_list' configuration file if KCONFIG_CONFIG/".config" doesn't exist. For load_config(), filename=None also allows the configuration file to be missing without raising an error. load_config() returns True if a local configuration file was loaded, which is useful to check in the menuconfig (if no local configuration file exists, we always want to prompt for saving the configuration when exiting). Also add a 'verbose' argument (default True) to load_config() and read_config() that makes them print which files were read/written in filename=None mode. Also generalize olddefconfig.py and oldconfig.py to not require there to already be a local configuration file. This was a bit silly for olddefconfig.py in particular. Remove the examples/defconfig.py script. It's a duplicate of olddefconfig.py.

Save existing configuration to ..old in write_config()

2018-12-07T23:14:42Z

Add a default-True 'save_old' flag to write_config(). If 'save_old' is True and an existing configuration file is being overwritten, a copy of the old configuration file is saved to ..old (e.g. .config.old) in the same directory. Errors are ignored, as the old configuration would usually just be a nice-to-have, and not essential. The same functionality could be added for minimal configuration files and headers, but it's probably most useful for configuration files.

Rename 'val_sym' to 'sym' in str_value()

2018-12-07T21:48:50Z

Consistent with elsewhere.

Remove _internal_error()

2018-12-07T21:45:09Z

These type sanity checks have never hit once during development over the years, and were inconsistently applied too. Remove them to simplify the code. Keep the InternalError exception for backwards compatibility, in case something catches it.

Flag removed symbols as changed in sync_deps()

2018-12-01T16:29:29Z

If a symbol is removed from a Kconfig file, it makes sense to flag it as changed, so that things that still (probably accidentally) depend on it get rebuilt. Saw a patch for the C tools with the same effect floating around, so might as well add it already. The C tools had other brokeness as well though...

Tighten up help text parsing

2018-12-01T13:17:38Z

Get rid of _indentation() and inline it into _parse_help(), adding some simplifications and optimizations along the way. Saves a few % of parsing of time. Help text parsing is surprisingly hot.

Reorder some tuples to put y first

2018-11-26T04:44:52Z

CONFIG_FOO=y and 'default y' and the like are more common than the n versions, so test for them first. Turning the tuples into sets would be even better on Python 3, as it optimizes sets with constant keys into a LOAD_CONST, but it has a performance penalty on Python 2.

Speed up more token membership tests

2018-11-26T04:42:13Z

Similar change to commit 4b23936 ("Speed up some token tests"), just for more tests. This especially helps for the "not a property line" case in _parse_properties(), which checks against all the cases. Saves 2-3% of parsing time together with the earlier change.

Whitespace nit

2018-11-25T01:52:19Z