[devtools] script support for managing source file copyright headers

Three subcommands to this script:

1) ./copyright_header.py report

Examines git-tracked files with extensions that match:

INCLUDE = ['*.h', '*.cpp', '*.cc', '*.c', '*.py']

Helps to:

-> Identify source files without copyright
-> Identify source files added with something other than "The Bitcoin Core
developers" holder so we can be sure it is appropriate
-> Identify unintentional typos in the copyright line

2) ./copyright_header.py update

Replaces fix-copyright-headers.py. It does file editing in native python
rather than subprocessing out to perl as was the case with
fix-copyright-headers.py. It also shares code with the 'report' functions.

3) ./copyright_header.py insert

Inserts a copyright header into a source file with the proper format and
dates.

1 files changed, 0 insertions, 67 deletions

diff --git a/contrib/devtools/fix-copyright-headers.py b/contrib/devtools/fix-copyright-headers.py
deleted file mode 100755
index 54836bd83..000000000
--- a/contrib/devtools/fix-copyright-headers.py
+++ /dev/null
@@ -1,67 +0,0 @@
-#!/usr/bin/env python3
-"""
-Run this script to update all the copyright headers of files
-that were changed this year.
-
-For example:
-
-// Copyright (c) 2009-2012 The Bitcoin Core developers
-
-it will change it to
-
-// Copyright (c) 2009-2015 The Bitcoin Core developers
-"""
-import subprocess
-import time
-import re
-
-CMD_GIT_LIST_FILES = ['git', 'ls-files']
-CMD_GIT_DATE = ['git', 'log', '--format=%ad', '--date=short', '-1']
-CMD_PERL_REGEX = ['perl', '-pi', '-e']
-REGEX_TEMPLATE = 's/(20\\d\\d)(?:-20\\d\\d)? The Bitcoin/$1-%s The Bitcoin/'
-
-FOLDERS = ["qa/", "src/"]
-EXTENSIONS = [".cpp",".h", ".py"]
-
-
-def get_git_date(file_path):
-    d = subprocess.run(CMD_GIT_DATE + [file_path],
-                       stdout=subprocess.PIPE,
-                       check=True,
-                       universal_newlines=True).stdout
-    # yyyy-mm-dd
-    return d.split('-')[0]
-
-
-def skip_file(file_path):
-    for ext in EXTENSIONS:
-        if file_path.endswith(ext):
-            return False
-    else:
-        return True
-
-if __name__ == "__main__":
-    year = str(time.gmtime()[0])
-    regex_current = re.compile("%s The Bitcoin" % year)
-    n = 1
-    for folder in FOLDERS:
-        for file_path in subprocess.run(
-            CMD_GIT_LIST_FILES + [folder],
-            stdout=subprocess.PIPE,
-            check=True,
-            universal_newlines=True
-        ).stdout.split("\n"):
-            if skip_file(file_path):
-                # print(file_path, "(skip)")
-                continue
-            git_date = get_git_date(file_path)
-            if not year == git_date:
-                # print(file_path, year, "(skip)")
-                continue
-            if regex_current.search(open(file_path, "r").read()) is not None:
-                # already up to date
-                # print(file_path, year, "(skip)")
-                continue
-            print(n, file_path, "(update to %s)" % year)
-            subprocess.run(CMD_PERL_REGEX + [REGEX_TEMPLATE % year, file_path], check=True)
-            n = n + 1