Add copyright and license header to code files

Signed-off-by: Keshav Priyadarshi <[email protected]>

Author: keshav-space

fst_builder/main.rs

@@ -1,3 +1,15 @@
+/*
+
+Copyright (c) nexB Inc. and others. All rights reserved.
+ScanCode is a trademark of nexB Inc.
+SPDX-License-Identifier: Apache-2.0
+See http://www.apache.org/licenses/LICENSE-2.0 for the license text.
+See https://github.com/aboutcode-org/purl-validator-rust for support or download.
+See https://aboutcode.org for more information about nexB OSS projects.
+
+*/
+
+
 use fst::SetBuilder;
 use std::fs::File;
 use std::io::{BufRead, BufReader};

src/lib.rs

@@ -1,3 +1,15 @@
+/*
+
+Copyright (c) nexB Inc. and others. All rights reserved.
+ScanCode is a trademark of nexB Inc.
+SPDX-License-Identifier: Apache-2.0
+See http://www.apache.org/licenses/LICENSE-2.0 for the license text.
+See https://github.com/aboutcode-org/purl-validator-rust for support or download.
+See https://aboutcode.org for more information about nexB OSS projects.
+
+*/
+
+
 use fst::Set;
 use memmap2::Mmap;
 use once_cell::sync::Lazy;

src/validate_tests.rs

@@ -1,3 +1,15 @@
+/*
+
+Copyright (c) nexB Inc. and others. All rights reserved.
+ScanCode is a trademark of nexB Inc.
+SPDX-License-Identifier: Apache-2.0
+See http://www.apache.org/licenses/LICENSE-2.0 for the license text.
+See https://github.com/aboutcode-org/purl-validator-rust for support or download.
+See https://aboutcode.org for more information about nexB OSS projects.
+
+*/
+
+
 use super::*;
 use std::path::Path;