making the ci.yml file into a cmake template

To simplify the ci logic, I'm changing the ci.yml file to a template.

Author: sean-parent

cmake/cpp-library-ci.cmake

@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: BSL-1.0
+#
+# cpp-library-ci.cmake - CI/CD configuration for cpp-library projects
+#
+# This module handles GitHub Actions workflow generation with PROJECT_NAME substitution
+
+# Function to configure CI workflow template
+function(_cpp_library_setup_ci)
+    set(options FORCE_INIT)
+    cmake_parse_arguments(ARG "${options}" "" "" ${ARGN})
+    
+    set(ci_template "${CPP_LIBRARY_ROOT}/templates/.github/workflows/ci.yml.in")
+    set(ci_dest "${CMAKE_CURRENT_SOURCE_DIR}/.github/workflows/ci.yml")
+    
+    if(EXISTS "${ci_template}" AND (NOT EXISTS "${ci_dest}" OR ARG_FORCE_INIT))
+        get_filename_component(ci_dir "${ci_dest}" DIRECTORY)
+        file(MAKE_DIRECTORY "${ci_dir}")
+        configure_file("${ci_template}" "${ci_dest}" @ONLY)
+        message(STATUS "Configured template file: .github/workflows/ci.yml")
+    elseif(NOT EXISTS "${ci_template}")
+        message(WARNING "CI template file not found: ${ci_template}")
+    endif()
+endfunction()

cmake/cpp-library-setup.cmake

@@ -113,27 +113,22 @@ function(_cpp_library_copy_templates)
         ".vscode/extensions.json"
         "docs/index.html"
         "CMakePresets.json"
-        ".github/workflows/ci.yml"
     )
 
     foreach(template_file IN LISTS TEMPLATE_FILES)
         set(source_file "${CPP_LIBRARY_ROOT}/templates/${template_file}")
         set(dest_file "${CMAKE_CURRENT_SOURCE_DIR}/${template_file}")
 
-        # Check if template file exists
-        if(EXISTS "${source_file}")
-            # Copy if file doesn't exist or FORCE_INIT is enabled
-            if(NOT EXISTS "${dest_file}" OR ARG_FORCE_INIT)
-                # Create directory if needed
-                get_filename_component(dest_dir "${dest_file}" DIRECTORY)
-                file(MAKE_DIRECTORY "${dest_dir}")
-
-                # Copy the file
-                file(COPY "${source_file}" DESTINATION "${dest_dir}")
-                message(STATUS "Copied template file: ${template_file}")
-            endif()
-        else()
+        if(EXISTS "${source_file}" AND (NOT EXISTS "${dest_file}" OR ARG_FORCE_INIT))
+            get_filename_component(dest_dir "${dest_file}" DIRECTORY)
+            file(MAKE_DIRECTORY "${dest_dir}")
+            file(COPY "${source_file}" DESTINATION "${dest_dir}")
+            message(STATUS "Copied template file: ${template_file}")
+        elseif(NOT EXISTS "${source_file}")
             message(WARNING "Template file not found: ${source_file}")
         endif()
     endforeach()
+    
+    # Setup CI workflow with PROJECT_NAME substitution
+    _cpp_library_setup_ci(${ARG_FORCE_INIT})
 endfunction()

cpp-library.cmake

@@ -16,6 +16,7 @@ include("${CPP_LIBRARY_ROOT}/cmake/cpp-library-setup.cmake")
 include("${CPP_LIBRARY_ROOT}/cmake/cpp-library-testing.cmake")  
 include("${CPP_LIBRARY_ROOT}/cmake/cpp-library-docs.cmake")
 include("${CPP_LIBRARY_ROOT}/cmake/cpp-library-install.cmake")
+include("${CPP_LIBRARY_ROOT}/cmake/cpp-library-ci.cmake")
 
 # Shared function to handle examples and tests consistently
 function(_cpp_library_setup_executables)

templates/.github/workflows/ci.yml renamed to templates/.github/workflows/ci.yml.in

@@ -73,9 +73,6 @@ jobs:
           mkdir -p ${{ runner.temp }}/test-find-package
           cd ${{ runner.temp }}/test-find-package
 
-          # Get project name from CMakeLists.txt (handles multi-line project() declarations)
-          PACKAGE_NAME=$(sed -n '/project(/,/)/p' "${{ github.workspace }}/CMakeLists.txt" | tr '\n' ' ' | sed 's/.*project([ \t]*\([^ \t)]*\).*/\1/')
-
           # Convert paths to forward slashes for CMake (works on all platforms)
           INSTALL_PREFIX=$(echo "${{ runner.temp }}/install" | sed 's|\\|/|g')
 
@@ -85,9 +82,9 @@ jobs:
           project(test-find-package CXX)
 
           set(CMAKE_PREFIX_PATH "${INSTALL_PREFIX}")
-          find_package(${PACKAGE_NAME} REQUIRED)
+          find_package(@PROJECT_NAME@ REQUIRED)
 
-          message(STATUS "Successfully found ${PACKAGE_NAME}")
+          message(STATUS "Successfully found @PROJECT_NAME@")
           EOF
 
           # Test find_package