Complete rewrite using C++ and with shared state support

1 files changed, 78 insertions, 0 deletions

diff --git a/src/xcb_resources_xrm.cc b/src/xcb_resources_xrm.cc
new file mode 100644
index 0000000..a9149af
--- /dev/null
+++ b/src/xcb_resources_xrm.cc
@@ -0,0 +1,78 @@
+#include "common.hh"
+
+#include "xcb_resources.hh"
+
+#include <xcb/xcb_xrm.h>
+
+namespace xcb {
+
+namespace {
+
+struct DatabaseDeleter {
+  void operator() (xcb_xrm_database_t* db) {
+    xcb_xrm_database_free(db);
+  }
+};
+
+class ResourcesXrm : public Resources {
+public:
+  explicit ResourcesXrm(shared_conn conn)
+    : conn_(conn), db_(xcb_xrm_database_from_default(conn_.get())) {
+  }
+
+  std::optional<std::string> get_string(std::string const& name,
+                                        std::string const& clazz) override {
+    if (db_) {
+      char* tmp;
+      if (xcb_xrm_resource_get_string(db_.get(),
+                                      std::string(name).c_str(),
+                                      std::string(clazz).c_str(),
+                                      &tmp) >= 0) {
+        std::string ret(tmp);
+        free(tmp);
+        return ret;
+      }
+    }
+    return std::optional<std::string>();
+  }
+
+  std::optional<long> get_long(std::string const& name,
+                               std::string const& clazz) override {
+    if (db_) {
+      long tmp;
+      if (xcb_xrm_resource_get_long(db_.get(),
+                                    std::string(name).c_str(),
+                                    std::string(clazz).c_str(),
+                                    &tmp) >= 0) {
+        return tmp;
+      }
+    }
+    return std::optional<long>();
+  }
+
+  std::optional<bool> get_bool(std::string const& name,
+                               std::string const& clazz) override {
+    if (db_) {
+      bool tmp;
+      if (xcb_xrm_resource_get_bool(db_.get(),
+                                    std::string(name).c_str(),
+                                    std::string(clazz).c_str(),
+                                    &tmp) >= 0) {
+        return tmp;
+      }
+    }
+    return std::optional<bool>();
+  }
+
+private:
+  shared_conn conn_;
+  std::unique_ptr<xcb_xrm_database_t, DatabaseDeleter> db_;
+};
+
+}  // namespace
+
+std::unique_ptr<Resources> Resources::create(shared_conn conn) {
+  return std::make_unique<ResourcesXrm>(conn);
+}
+
+}  // namespace xcb