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author | Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-04-16 18:05:33 +0100 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-05-06 11:07:12 +0100 |
commit | 4c1881b620e885f55d7772f8626b8a76c2828333 (patch) | |
tree | 5ca9d4c8fba079911b71316d4730e6f3df8c8ab5 /bin | |
parent | a944a335f8f4c4fe5df55f3d7d8e757bd2835146 (diff) | |
download | bitbake-4c1881b620e885f55d7772f8626b8a76c2828333.tar.gz |
bin/bitbake-getvar: Add a new command to query a variable value (with history)
We've talked about having this for long enough. Add a command which queries a single
variable value with history. This saves "bitbake -e | grep" and avoids the
various pitfalls that has.
It also provides a neat example of using tinfoil to make such a query.
Parameters to limit the output to just the value, to limit to a variable flag
and to not expand the output are provided.
[YOCTO #10748]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bin')
-rwxr-xr-x | bin/bitbake-getvar | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/bin/bitbake-getvar b/bin/bitbake-getvar new file mode 100755 index 000000000..942321925 --- /dev/null +++ b/bin/bitbake-getvar @@ -0,0 +1,48 @@ +#! /usr/bin/env python3 +# +# Copyright (C) 2021 Richard Purdie +# +# SPDX-License-Identifier: GPL-2.0-only +# + +import argparse +import io +import os +import sys + +bindir = os.path.dirname(__file__) +topdir = os.path.dirname(bindir) +sys.path[0:0] = [os.path.join(topdir, 'lib')] + +import bb.tinfoil + +if __name__ == "__main__": + parser = argparse.ArgumentParser(description="Bitbake Query Variable") + parser.add_argument("variable", help="variable name to query") + parser.add_argument("-r", "--recipe", help="Recipe name to query", default=None, required=False) + parser.add_argument('-u', '--unexpand', help='Do not expand the value (with --value)', action="store_true") + parser.add_argument('-f', '--flag', help='Specify a variable flag to query (with --value)', default=None) + parser.add_argument('--value', help='Only report the value, no history and no variable name', action="store_true") + args = parser.parse_args() + + if args.unexpand and not args.value: + print("--unexpand only makes sense with --value") + sys.exit(1) + + if args.flag and not args.value: + print("--flag only makes sense with --value") + sys.exit(1) + + with bb.tinfoil.Tinfoil(tracking=True) as tinfoil: + if args.recipe: + tinfoil.prepare(quiet=2) + d = tinfoil.parse_recipe(args.recipe) + else: + tinfoil.prepare(quiet=2, config_only=True) + d = tinfoil.config_data + if args.flag: + print(str(d.getVarFlag(args.variable, args.flag, expand=(not args.unexpand)))) + elif args.value: + print(str(d.getVar(args.variable, expand=(not args.unexpand)))) + else: + bb.data.emit_var(args.variable, d=d, all=True) |