checks for license information parity between Cargo.toml and source files

check_licenses.sh

@@ -2,23 +2,30 @@
 
 set -e
 
-# check usage
-if ! test -n "$1"; then
-	printf "Usage: %s [pattern...]\n" "$0" 1>&2
-	exit 64 # sysexits(3) EX_USAGE
+# check if we have tomcat(1)
+if ! command -v tomcat >/dev/null 2>&1; then
+	printf "%s: Missing dependency: tomcat(1)\n"
+	exit 69 # sysexits(3) EX_UNAVAILABLE
 fi
 
-# check if we have rg(1); if not, use find(1) and sed(1) instead
-if ! command -v rg >/dev/null 2>&1; then
-	files="$(find "$PWD" -name "$1")"
-	for file in $files; do
-		if ! test -n \
-			"$(sed -n '\|// SPDX-License-Identifier: .*|p' <"$file")"
+for toml in $(find "$PWD" -name "Cargo.toml"); do
+	printf "Project: %s\n" "$(tomcat package.name "$toml")"
+	for file in $(find "$(printf "%s\n" "$toml" | sed 's/Cargo\.toml/src/g')" -name "*.rs"); do
+		info="$(head -n 2 "$file")"
+		toml_lic="$(tomcat package.license "$toml")"
+		if ! test -n "$toml_lic"; then
+			printf "%s: Missing license information\n" "$toml"
+			continue 2
+		fi
+		if ! [ "$toml_lic" = "$(printf "%s\n" "$info" | tail -n 1 |\
+			sed -n 's/\/\/ SPDX-License-Identifier: //p')" ]
 		then
-			! test "$file" = "$1" && printf "%s\n" "$file"
+			printf "%s: Missing or malformed license information\n" "$file"
+		fi
+		if ! test -n "$(printf "%s\n" "$info" | head -n 1 |\
+			sed -n '/\/\/ Copyright (c) .\+/p')"
+		then
+			printf "%s: Missing or malformed copyright holder information\n" "$file"
 		fi
 	done
-else
-	rg --multiline --files-without-match --glob "$1" --pcre2 \
-		'(?<!\n)((//)|(#)) Copyright \(c\) \d+ [A-z, ]+\n((//)|(#)) SPDX-License-Identifier: .*\n'
-fi
+done