Add support for licenses that use a "COPYING" file (#3)

* Add support for licenses that use a "COPYING" file

Some projects like https://github.com/TartanLlama/expected use a `COPYING` file for their license. This adds support for this case.

* Add test for projects with COPYING file

* Fix formatting

.github/workflows/check.yml

@@ -24,3 +24,4 @@ jobs:
         grep -q Catch2 build/third_party.txt
         grep -q fmt build/third_party.txt
         grep -q sol2 build/third_party.txt
+        grep -q expected build/third_party.txt

CMakeLists.txt

@@ -2,7 +2,9 @@ function(write_license_disclaimer FILE_NAME PACKAGES)
   file(WRITE ${FILE_NAME} "")
   set(PRINT_DELIMITER OFF)
   foreach(package ${PACKAGES})
-    file(GLOB licenses "${${package}_SOURCE_DIR}/LICENSE*" "${${package}_SOURCE_DIR}/LICENCE*")
+    file(GLOB licenses "${${package}_SOURCE_DIR}/LICENSE*" "${${package}_SOURCE_DIR}/LICENCE*"
+         "${${package}_SOURCE_DIR}/COPYING*"
+    )
     list(LENGTH licenses LICENSE_COUNT)
     if(LICENSE_COUNT GREATER_EQUAL 1)
       if(PRINT_DELIMITER)

test/project/CMakeLists.txt

@@ -26,6 +26,13 @@ CPMAddPackage(
   DOWNLOAD_ONLY YES
 )
 
+CPMAddPackage(
+  NAME expected
+  GITHUB_REPOSITORY TartanLlama/expected
+  VERSION 1.0.0
+  DOWNLOAD_ONLY YES
+)
+
 cpm_licenses_create_disclaimer_target(
   write-licenses "${CMAKE_CURRENT_BINARY_DIR}/third_party.txt" "${CPM_PACKAGES}"
 )