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Posted to commits@skywalking.apache.org by ke...@apache.org on 2020/12/27 04:54:38 UTC

[skywalking-eyes] 02/03: Resolve Apache-2.0, BSD-3-Clause, and MIT licenses

This is an automated email from the ASF dual-hosted git repository.

kezhenxu94 pushed a commit to branch deps
in repository https://gitbox.apache.org/repos/asf/skywalking-eyes.git

commit 2bbe2c875bd19249e994e470b059548aa77a2db9
Author: kezhenxu94 <ke...@apache.org>
AuthorDate: Sun Dec 27 11:37:26 2020 +0800

    Resolve Apache-2.0, BSD-3-Clause, and MIT licenses
---
 .licenserc.yaml                                    |   1 +
 license-eye/README.adoc                            |   2 +-
 .../Apache-2.0-ASF.txt                             |   0
 .../Apache-2.0.txt                                 |   0
 license-eye/assets/lcs-templates/Apache-2.0.txt    | 181 +++++++++++++++++++--
 license-eye/assets/lcs-templates/BSD-3-Clause.txt  |  27 +++
 license-eye/assets/lcs-templates/MIT.txt           |  19 +++
 license-eye/commands/deps_resolve.go               |   3 +-
 license-eye/go.sum                                 |   1 +
 license-eye/pkg/deps/golang.go                     |  11 +-
 license-eye/pkg/deps/result.go                     |   2 +-
 license-eye/pkg/header/config.go                   |   4 +-
 license-eye/pkg/license/identifier.go              |  35 ++++
 license-eye/pkg/license/norm.go                    |  39 +++++
 14 files changed, 306 insertions(+), 19 deletions(-)

diff --git a/.licenserc.yaml b/.licenserc.yaml
index 0e5aab6..db09875 100644
--- a/.licenserc.yaml
+++ b/.licenserc.yaml
@@ -69,6 +69,7 @@ header: # `header` section is configurations for source codes license header.
     - '**/go.sum'
     - 'LICENSE'
     - 'NOTICE'
+    - '**/assets/header-templates/**'
     - '**/assets/lcs-templates/**'
     - '**/assets/languages.yaml'
     - '**/assets/assets.gen.go'
diff --git a/license-eye/README.adoc b/license-eye/README.adoc
index d22ade3..9118635 100644
--- a/license-eye/README.adoc
+++ b/license-eye/README.adoc
@@ -195,7 +195,7 @@ include::assets/styles.yaml[tags=SlashAsterisk]
 == Contribution
 
 - If you find any file type should be supported by the aforementioned configurations but is not listed there, feel free to link:https://github.com/apache/skywalking-eyes/pulls[open a pull request] to add the configuration into the 2 files.
-- If you find the license template of an SPDX ID is not supported, feel free to link:https://github.com/apache/skywalking-eyes/pulls[open a pull request] to add it into link:assets/lcs-templates[the template folder].
+- If you find the license template of an SPDX ID is not supported, feel free to link:https://github.com/apache/skywalking-eyes/pulls[open a pull request] to add it into link:assets/header-templates[the template folder].
 
 == License
 
diff --git a/license-eye/assets/lcs-templates/Apache-2.0-ASF.txt b/license-eye/assets/header-templates/Apache-2.0-ASF.txt
similarity index 100%
rename from license-eye/assets/lcs-templates/Apache-2.0-ASF.txt
rename to license-eye/assets/header-templates/Apache-2.0-ASF.txt
diff --git a/license-eye/assets/lcs-templates/Apache-2.0.txt b/license-eye/assets/header-templates/Apache-2.0.txt
similarity index 100%
copy from license-eye/assets/lcs-templates/Apache-2.0.txt
copy to license-eye/assets/header-templates/Apache-2.0.txt
diff --git a/license-eye/assets/lcs-templates/Apache-2.0.txt b/license-eye/assets/lcs-templates/Apache-2.0.txt
index 83cfa23..dd5b3a5 100644
--- a/license-eye/assets/lcs-templates/Apache-2.0.txt
+++ b/license-eye/assets/lcs-templates/Apache-2.0.txt
@@ -1,13 +1,174 @@
-Copyright [year] [owner]
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
 
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
-http://www.apache.org/licenses/LICENSE-2.0
+   1. Definitions.
 
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
diff --git a/license-eye/assets/lcs-templates/BSD-3-Clause.txt b/license-eye/assets/lcs-templates/BSD-3-Clause.txt
new file mode 100644
index 0000000..3d387bc
--- /dev/null
+++ b/license-eye/assets/lcs-templates/BSD-3-Clause.txt
@@ -0,0 +1,27 @@
+Copyright (c) [year] [owner]. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/license-eye/assets/lcs-templates/MIT.txt b/license-eye/assets/lcs-templates/MIT.txt
new file mode 100644
index 0000000..a45b07f
--- /dev/null
+++ b/license-eye/assets/lcs-templates/MIT.txt
@@ -0,0 +1,19 @@
+Copyright (c) [year] [owner]
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next paragraph)
+shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/license-eye/commands/deps_resolve.go b/license-eye/commands/deps_resolve.go
index 96ca6ca..f4d492f 100644
--- a/license-eye/commands/deps_resolve.go
+++ b/license-eye/commands/deps_resolve.go
@@ -35,8 +35,7 @@ var ResolveCommand = &cobra.Command{
 		}
 
 		for _, result := range report.Resolved {
-			logger.Log.Debugln("Resolved:", result.Dependency)
-			logger.Log.Debugln("License:", result.LicenseFilePath)
+			logger.Log.Debugln("Pkg: ", result.Dependency, " License:", result.LicenseSpdxID)
 		}
 
 		logger.Log.Debugln("Skipped:", len(report.Skipped))
diff --git a/license-eye/go.sum b/license-eye/go.sum
index 3143ee6..2da1b0f 100644
--- a/license-eye/go.sum
+++ b/license-eye/go.sum
@@ -290,6 +290,7 @@ golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e h1:aZzprAO9/8oim3qStq3wc1Xuxx4QmAGriC4VU4ojemQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e h1:4nW4NLDYnU28ojHaHO8OVxFHk/aQ33U01a9cjED+pzE=
+golang.org/x/tools v0.0.0-20201226215659-b1c90890d22a h1:pdfjQ7VswBeGam3EpuEJ4e8EAb7JgaubV570LO/SIQM=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898 h1:/atklqdjdhuosWIl6AIbOeHJjicWYPqR9bpxqxYG2pA=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/license-eye/pkg/deps/golang.go b/license-eye/pkg/deps/golang.go
index cea090f..99f4fe2 100644
--- a/license-eye/pkg/deps/golang.go
+++ b/license-eye/pkg/deps/golang.go
@@ -24,6 +24,7 @@ import (
 	"regexp"
 
 	"github.com/apache/skywalking-eyes/license-eye/internal/logger"
+	"github.com/apache/skywalking-eyes/license-eye/pkg/license"
 	"golang.org/x/mod/modfile"
 	"golang.org/x/tools/go/packages"
 )
@@ -79,7 +80,7 @@ func (resolver *GoModeResolver) ResolvePackages(pkgNames []string, report *Repor
 	packages.Visit(requiredPkgs, func(p *packages.Package) bool {
 		err := resolver.ResolvePackageLicense(p, report)
 		if err != nil {
-			logger.Log.Warnln("Failed to resolve the license of dependency:", p.Name, err)
+			logger.Log.Warnln("Failed to resolve the license of dependency:", p.PkgPath, err)
 		}
 		return true
 	}, nil)
@@ -123,11 +124,15 @@ func (resolver *GoModeResolver) ResolvePackageLicense(p *packages.Package, repor
 			if err != nil {
 				return err
 			}
+			identifier, err := license.Identify(string(content))
+			if err != nil {
+				return err
+			}
 			report.Resolve(&Result{
 				Dependency:      p.PkgPath,
-				LicenseContent:  string(content),
 				LicenseFilePath: licenseFilePath,
-				LicenseSpdxID:   "", // TODO: identify the SPDX ID
+				LicenseContent:  string(content),
+				LicenseSpdxID:   []string{identifier},
 			})
 			return nil
 		}
diff --git a/license-eye/pkg/deps/result.go b/license-eye/pkg/deps/result.go
index bfea534..abf8669 100644
--- a/license-eye/pkg/deps/result.go
+++ b/license-eye/pkg/deps/result.go
@@ -28,7 +28,7 @@ type Result struct {
 	Dependency      string
 	LicenseFilePath string
 	LicenseContent  string
-	LicenseSpdxID   string
+	LicenseSpdxID   []string
 }
 
 // Report is a collection of resolved Result.
diff --git a/license-eye/pkg/header/config.go b/license-eye/pkg/header/config.go
index df2d630..219a388 100644
--- a/license-eye/pkg/header/config.go
+++ b/license-eye/pkg/header/config.go
@@ -137,12 +137,12 @@ func (config *ConfigHeader) GetLicenseContent() string {
 
 func readLicenseFromSpdx(config *ConfigHeader) (string, error) {
 	spdxID, owner := config.License.SpdxID, config.License.CopyrightOwner
-	filename := fmt.Sprintf("assets/lcs-templates/%v.txt", spdxID)
+	filename := fmt.Sprintf("assets/header-templates/%v.txt", spdxID)
 
 	if spdxID == "Apache-2.0" && ASFNames.MatchString(owner) {
 		// Note that the Apache Software Foundation uses a different source header that is related to our use of a CLA.
 		// Our instructions for our project's source headers are here (https://www.apache.org/legal/src-headers.html#headers).
-		filename = "assets/lcs-templates/Apache-2.0-ASF.txt"
+		filename = "assets/header-templates/Apache-2.0-ASF.txt"
 	}
 
 	content, err := assets.Asset(filename)
diff --git a/license-eye/pkg/license/identifier.go b/license-eye/pkg/license/identifier.go
new file mode 100644
index 0000000..9751607
--- /dev/null
+++ b/license-eye/pkg/license/identifier.go
@@ -0,0 +1,35 @@
+package license
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+
+	"github.com/apache/skywalking-eyes/license-eye/assets"
+)
+
+const templatesDir = "assets/lcs-templates"
+
+// Identify identifies the Spdx ID of the given license content
+func Identify(content string) (string, error) {
+	content = Normalize(content)
+
+	templates, err := assets.AssetDir(templatesDir)
+	if err != nil {
+		return "", err
+	}
+
+	for _, template := range templates {
+		t, err := assets.Asset(filepath.Join(templatesDir, template))
+		if err != nil {
+			return "", err
+		}
+		license := string(t)
+		license = Normalize(license)
+		if license == content {
+			return strings.TrimSuffix(template, filepath.Ext(template)), nil
+		}
+	}
+
+	return "", fmt.Errorf("cannot identify license content")
+}
diff --git a/license-eye/pkg/license/norm.go b/license-eye/pkg/license/norm.go
index 6cd5612..1e723f3 100644
--- a/license-eye/pkg/license/norm.go
+++ b/license-eye/pkg/license/norm.go
@@ -30,9 +30,11 @@ var (
 	// meanings, according to the matching guide in https://spdx.dev/license-list/matching-guidelines.
 	// The order matters.
 	normalizers = []Normalizer{
+		VariablesNormalizer,
 		OneLineNormalizer,
 		FlattenSpaceNormalizer,
 		SubstantiveTextsNormalizer,
+		FlattenSpaceNormalizer,
 		strings.ToLower,
 		strings.TrimSpace,
 	}
@@ -116,6 +118,34 @@ var (
 
 		{regexp.MustCompile(`(?i)\b(the )?Apache Software Foundation( \(ASF\))?`), "the ASF"},
 	}
+
+	variables = []struct {
+		regexp      *regexp.Regexp
+		replacement string
+	}{
+		// BSD-3-Clause
+		{
+			regexp.MustCompile(`(?im)(^(Copyright \(c\)) (\d{4}) (.+?) (All rights reserved\.)?$\n?)+`),
+			"$2 [year] [owner]. $5",
+		},
+		{
+			regexp.MustCompile(`(?i)(neither the name of) (.+?) (nor the names of)`),
+			"$1 the copyright holder $3",
+		},
+		// MIT
+		{ // remove optional header
+			regexp.MustCompile(`(?im)^The MIT License \(MIT\)$`),
+			"",
+		},
+		{
+			regexp.MustCompile(`(?im)^(Copyright \(c\)) (\d{4}) (.+?)$`),
+			"$1 [year] [owner]",
+		},
+		{
+			regexp.MustCompile(`(?im)\(including the next paragraph\)`),
+			"",
+		},
+	}
 )
 
 // NormalizePattern applies a chain of Normalizers to the license pattern to make it cleaner for identification.
@@ -169,3 +199,12 @@ func CommentIndicatorNormalizer(text string) string {
 func FlattenSpaceNormalizer(text string) string {
 	return flattenSpace.ReplaceAllString(text, " ")
 }
+
+// VariablesNormalizer replace the variables actual value into variable name.
+func VariablesNormalizer(text string) string {
+	for _, v := range variables {
+		text = v.regexp.ReplaceAllString(text, v.replacement)
+	}
+
+	return text
+}