Create update_copyright.sh

Author: MarcSteven

update_copyright.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+set -euo pipefail
+SCRIPT_NAME=$(basename $0)
+
+# Arg1: OLD_YEAR
+# Arg2: NEW_YEAR
+# Arg3: File Path
+replace_copyright() {
+	sed -i '' -e "s|Copyright (c) 2010-${1}, Deusty, LLC|Copyright (c) 2010-${2}, Deusty, LLC|g" "$3"
+	return $?
+}
+
+current_year() {
+	date '+%Y'
+	return $?
+}
+
+last_year() {
+	date -v'-1y' '+%Y'
+	return $?
+}
+
+# Arg1: Mode (full, usage_only). Defaults to 'full'.
+print_usage() {
+	echo "Usage: ${SCRIPT_NAME} [OLD_YEAR NEW_YEAR]"
+	if [[ "${1:-full}" == "full" ]]; then
+		echo ""
+		echo "If called with OLD_YEAR and NEW_YEAR arguments, updates the copyright years from OLD_YEAR to NEW_YEAR."
+		echo "If called with no arguments but OLD_YEAR and NEW_YEAR environment variables defined, updates from OLD_YEAR to NEW_YEAR."
+		echo "If called with no arguments and OLD_YEAR and NEW_YEAR not being defined, updates from last year to the current year."
+		echo ""
+		echo "Examples:"
+		echo "$ ${SCRIPT_NAME} 2016 2017                       # Updates from 2016 to 2017."
+		echo "$ OLD_YEAR=2017 NEW_YEAR=2018 ${SCRIPT_NAME}     # Updates from 2017 to 2018."
+		echo "$ ${SCRIPT_NAME}                                 # Updates from $(last_year) to $(current_year)."
+	fi
+}
+
+OLD_YEAR=${OLD_YEAR:-$(last_year)}
+NEW_YEAR=${NEW_YEAR:-$(current_year)}
+if [[ $# -gt 0 ]]; then
+	if [[ $# -eq 2 ]]; then
+		OLD_YEAR="$1"
+		NEW_YEAR="$2"
+	elif [[ $# -eq 1 ]] && [[ $1 == "--help" ]] || [[ $1 == "-h" ]]; then
+		print_usage 'full'
+		exit 0
+	else
+		echo "Specifying years via command line arguments requires two arguments (OLD_YEAR and NEW_YEAR)!"
+		echo "For more information use --help."
+		echo ""
+		print_usage 'usage_only'
+		exit -1
+	fi
+fi
+
+# We need to export the function so that bash can call it from the find exec argument.
+export -f replace_copyright
+
+pushd "$(dirname $0)/../" > /dev/null
+find -E . -regex ".*\.([hm]|swift|pch)" -exec bash -c "replace_copyright \"${OLD_YEAR}\" \"${NEW_YEAR}\" \"{}\"" \;
+replace_copyright "${OLD_YEAR}" "${NEW_YEAR}" "./LICENSE"
+replace_copyright "${OLD_YEAR}" "${NEW_YEAR}" "./Dangerfile"
+popd > /dev/null
+
+# Delete the function again
+unset -f replace_copyright