--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/settings.cpp Sat Feb 01 15:06:48 2025 +0100
@@ -0,0 +1,49 @@
+/* Copyright 2025 Mike Becker. All rights reserved.
+*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "settings.h"
+
+#include <format>
+#include <algorithm>
+
+using namespace fm;
+
+[[nodiscard]] bool settings::exclude_author(const std::string &author) const {
+ // no allow-list means: always allowed
+ if (authors.empty()) return false;
+
+ // check all allowed authors
+ return std::ranges::all_of(authors, [&](const auto &allowed) {
+ // check for exact match
+ if (author == allowed) return false;
+
+ // check mail address matching
+ if (author.contains(std::format("<{}>", allowed))) return false;
+
+ // check local-part from mail address matching
+ if (author.contains(std::format("<{}@", allowed))) return false;
+
+ return true;
+ });
+}