From 105e0aaeb99cb4c704fc6541b57c0fda4d766b94 Mon Sep 17 00:00:00 2001
From: Duncan Ogilvie <mr.exodia.tpodt@gmail.com>
Date: Wed, 31 Mar 2021 18:47:54 +0200
Subject: [PATCH] Add support for project.description and project.languages

---
 CMakeLists.txt        |  8 +++++--
 cmake.toml            |  2 ++
 src/cmkrlib/cmake.cpp |  2 ++
 src/cmkrlib/cmake.hpp |  2 ++
 src/cmkrlib/gen.cpp   | 52 ++++++++++++++++++++++++++++++++++++-------
 5 files changed, 56 insertions(+), 10 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11a63f4..543ab28 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,8 +11,12 @@ cmake_minimum_required(VERSION 2.8...3.8)
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
-set(cmkr_PROJECT_VERSION 0.1.3)
-project(cmkr VERSION ${cmkr_PROJECT_VERSION})
+project(cmkr
+	LANGUAGES
+		CXX
+	VERSION 0.1.3
+	DESCRIPTION "CMakeLists generator from TOML"
+)
 
 add_subdirectory(third_party)
 
diff --git a/cmake.toml b/cmake.toml
index 080f0f2..570a36c 100644
--- a/cmake.toml
+++ b/cmake.toml
@@ -4,6 +4,8 @@ minimum = "2.8...3.8"
 [project]
 name = "cmkr"
 version = "0.1.3"
+description = "CMakeLists generator from TOML"
+languages = ["CXX"]
 cmake-after = "add_subdirectory(third_party)"
 
 [target.cmkrlib]
diff --git a/src/cmkrlib/cmake.cpp b/src/cmkrlib/cmake.cpp
index c49ca2d..3a64862 100644
--- a/src/cmkrlib/cmake.cpp
+++ b/src/cmkrlib/cmake.cpp
@@ -64,6 +64,8 @@ CMake::CMake(const std::string &path, bool build) {
             const auto &project = toml::find(toml, "project");
             project_name = toml::find(project, "name").as_string();
             project_version = toml::find_or(project, "version", "");
+            project_description = toml::find_or(project, "description", "");
+            project_languages = optional_array(project, "languages");
             cmake_before = toml::find_or(project, "cmake-before", "");
             cmake_after = toml::find_or(project, "cmake-after", "");
             include_before = optional_array(project, "include-before");
diff --git a/src/cmkrlib/cmake.hpp b/src/cmkrlib/cmake.hpp
index 7c86fd7..97abbd4 100644
--- a/src/cmkrlib/cmake.hpp
+++ b/src/cmkrlib/cmake.hpp
@@ -92,6 +92,8 @@ struct CMake {
     std::vector<std::string> build_args;
     std::string project_name;
     std::string project_version;
+    std::string project_description;
+    std::vector<std::string> project_languages;
     std::string cmake_before;
     std::string cmake_after;
     std::vector<std::string> include_before;
diff --git a/src/cmkrlib/gen.cpp b/src/cmkrlib/gen.cpp
index 24dab82..374a967 100644
--- a/src/cmkrlib/gen.cpp
+++ b/src/cmkrlib/gen.cpp
@@ -121,6 +121,15 @@ struct CommandEndl {
     void endl() { ss << '\n'; }
 };
 
+template <typename T>
+struct NamedArg {
+    std::string name;
+    T value;
+
+    NamedArg() = default;
+    NamedArg(std::string name, T value) : name(std::move(name)), value(std::move(value)) {}
+};
+
 // Credit: JustMagic
 struct Command {
     std::stringstream &ss;
@@ -158,11 +167,12 @@ struct Command {
         return result;
     }
 
-    const char *indent(int n) {
+    std::string indent(int n) {
+        std::string result;
         for (int i = 0; i < n; i++) {
-            ss << '\t';
+            result += '\t';
         }
-        return "";
+        return result;
     }
 
     template <class T>
@@ -205,6 +215,32 @@ struct Command {
         return true;
     }
 
+    template <class K>
+    bool print_arg(const std::pair<K, std::vector<std::string>> &kv) {
+        if (kv.second.empty()) {
+            return true;
+        }
+
+        ss << '\n';
+        ss << indent(depth + 1) << kv.first << '\n';
+        for (const auto &s : kv.second) {
+            ss << indent(depth + 2) << quote(s) << '\n';
+        }
+
+        return true;
+    }
+
+    template <class K, class V>
+    bool print_arg(const std::pair<K, V> &kv) {
+        if (kv.second.empty()) {
+            return true;
+        }
+
+        ss << indent(depth + 1) << kv.first << ' ' << quote(kv.second) << '\n';
+
+        return true;
+    }
+
     template <class T>
     bool print_arg(const T &value) {
         if (first_arg) {
@@ -320,11 +356,11 @@ int generate_cmake(const char *path, bool root) {
             ss << "\")\n\n";
         }
 
-        if (!cmake.project_name.empty() && !cmake.project_version.empty()) {
-            auto name = cmake.project_name;
-            auto version = cmake.project_version;
-            cmd("set")(name + "_PROJECT_VERSION", version);
-            cmd("project")(name, "VERSION", "${" + name + "_PROJECT_VERSION}").endl();
+        if (!cmake.project_name.empty()) {
+            auto languages = std::make_pair("LANGUAGES", cmake.project_languages);
+            auto version = std::make_pair("VERSION", cmake.project_version);
+            auto description = std::make_pair("DESCRIPTION", cmake.project_description);
+            cmd("project")(cmake.project_name, languages, version, description).endl();
         }
 
         if (!cmake.cmake_after.empty()) {