Update copyright headers.

Author: adewes

.scripts/copyright_text.txt

@@ -0,0 +1,3 @@
+Kiebitz - Privacy-Friendly Appointments
+Copyright (C) 2021-{year} The Kiebitz Authors
+README.md contains license information.

.scripts/make_copyright_headers.py

@@ -0,0 +1,52 @@
+import datetime
+import os
+
+script_dir = os.path.dirname(os.path.abspath(__file__))
+source_dirs = [os.path.join(os.path.dirname(script_dir), 'src')]
+context = {}
+
+def read_copyright():
+    with open(os.path.join(script_dir,'copyright_text.txt')) as input_file:
+        return input_file.read().strip()
+
+def format_copyright(text):
+    c = context.copy()
+    c['year'] = datetime.datetime.now().year
+    return "\n".join([("// "+ t).strip() for t in text.format(**c).split("\n")])
+
+def process_file(path, copyright_notice):
+    with open(path) as input:
+        content = input.read()
+    lines = content.split("\n")
+    for line in lines:
+        if line.strip() == "// no-copyright-header":
+            return
+    for i, line in enumerate(lines):
+        if not line.startswith('//'):
+            break
+    if lines[i].strip() == '':
+        i+=1
+    lines = lines[i:]
+    new_content = copyright_notice+"\n\n"+"\n".join(lines)
+    print("Writing {}".format(path))
+    with open(path, 'w') as output:
+        output.write(new_content)
+    
+
+def enumerate_files(dir, extensions=['.go', '.js', '.jsx', '.ts', '.tsx'], exclude=set(['node_modules'])):
+    for file in os.listdir(dir):
+        path = os.path.join(dir, file)
+        if file.startswith('.'):
+            continue
+        if os.path.isdir(path) and file not in exclude:
+            for path in enumerate_files(path):
+                yield path
+        else:
+            for extension in extensions:
+                if file.endswith(extension):
+                    yield path
+if __name__ == '__main__':
+    copyright_notice = format_copyright(read_copyright())
+    for source_dir in source_dirs:
+        for path in enumerate_files(source_dir):
+            process_file(path, copyright_notice)

Makefile

@@ -1,3 +1,6 @@
+copyright:
+	python .scripts/make_copyright_headers.py
+
 prettier:
 	npx prettier --write .
 

src/crypto/derive.spec.ts

@@ -1,3 +1,7 @@
+// Kiebitz - Privacy-Friendly Appointments
+// Copyright (C) 2021-2021 The Kiebitz Authors
+// README.md contains license information.
+
 import { equal } from "assert"
 import { randomBytes, deriveSecrets } from "./"
 import { b642buf } from "../helpers/conversion"

src/crypto/interfaces.ts

@@ -1,3 +1,7 @@
+// Kiebitz - Privacy-Friendly Appointments
+// Copyright (C) 2021-2021 The Kiebitz Authors
+// README.md contains license information.
+
 export interface KeyPair {
     publicKey: string
     privateKey: JsonWebKey

src/index.ts

@@ -1,2 +1,6 @@
+// Kiebitz - Privacy-Friendly Appointments
+// Copyright (C) 2021-2021 The Kiebitz Authors
+// README.md contains license information.
+
 export { b642buf } from "./helpers/conversion"
 export { deriveSecrets, randomBytes } from "./crypto"