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Convert to SPDX license headers and remove copyright year #812

Merged
merged 2 commits into from
Nov 9, 2022
Merged

Convert to SPDX license headers and remove copyright year #812

merged 2 commits into from
Nov 9, 2022

Commits on Nov 9, 2022

  1. all: convert to SPDX license headers 

    Generated by running the spdxconv tool (tools/spdxconv in the Cilium
repo) over the entire code base.

Signed-off-by: Tobias Klauser <tobias@cilium.io>
    @tklauser
    tklauser committed Nov 9, 2022
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  2. all: remove year from copyright notice 

    Hubble source files have a header with a SPDX tag and a copyright
notice, stating that the copyright goes to the Authors of Hubble, and
containing a year or year range to specify to what period the copyright
extends.

The year or year range are not necessary in this statement. The CNCF
recommends not using the year or the copyright symbol, to keep files
easy to process [0]. The history of the source code is conserved through
the version control system, and is easily available for all to check
out.

[0] https://github.com/cncf/foundation/blob/main/copyright-notices.md#copyright-notices

Drop the year and year range for the entire codebase.

The files were processed as follows:

$ cat years.sed
6, $ b
/^\(#\|\/\/\|\/\*\) *SPDX-License-Identifier: \(GPL-2\.0\|Apache-2\.0\)\( \*\/\)\?$/ {
    N; s/Copyright .* Authors of Hubble/Copyright Authors of Hubble/
}
/^\(#\|\/\/\|\/\*\) *Copyright .* Authors of Hubble\( \*\/\)\?$/ {
    N; {
	/\(#\|\/\/\|\/\*\) *SPDX-License-Identifier: \(GPL-2\.0\|Apache-2\.0\)\( \*\/\)\?$/ s/Copyright .* Authors of Hubble/Copyright Authors of Hubble/
    }
}
$ find main.go cmd pkg -type f -print0 | xargs -0 -P 8 sed -i -f years.sed

Also add copyright headers to some Go source files that were previously
missing the headers.

Signed-off-by: Tobias Klauser <tobias@cilium.io>
    @tklauser
    tklauser committed Nov 9, 2022
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