feat(blog): rss feed for blogs

1 files changed, 98 insertions, 0 deletions

diff --git a/src/xml.rs b/src/xml.rs
new file mode 100644
index 0000000..0709723
--- /dev/null
+++ b/src/xml.rs
@@ -0,0 +1,98 @@
+// This file is part of Locus <https://github.com/gemrest/locus>.
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use std::{collections::HashMap, fmt::Display};
+
+pub struct Item {
+  fields: HashMap<String, String>,
+}
+impl Item {
+  pub fn builder() -> Self {
+    Self {
+      fields: HashMap::new(),
+    }
+  }
+
+  pub fn add_field(&mut self, key: &str, value: &str) -> &mut Self {
+    self.fields.insert(key.to_string(), value.to_string());
+
+    self
+  }
+}
+impl Display for Item {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    write!(
+      f,
+      "<item>{}</item>",
+      self.fields.iter().fold(String::new(), |mut acc, (k, v)| {
+        acc.push_str(&format!("<{}>{}</{}>", k, v, k));
+        acc
+      })
+    )
+  }
+}
+
+#[derive(Clone)]
+pub struct Writer {
+  content: String,
+  fields:  HashMap<String, String>,
+  link:    String,
+}
+impl Writer {
+  pub fn builder() -> Self {
+    Self {
+      content: String::new(),
+      fields:  HashMap::default(),
+      link:    "".to_string(),
+    }
+  }
+
+  pub fn add_link(&mut self, link: &str) -> &mut Self {
+    self.link = link.to_string();
+
+    self
+  }
+
+  pub fn add_field(&mut self, key: &str, value: &str) -> &mut Self {
+    self.fields.insert(key.to_string(), value.to_string());
+
+    self
+  }
+
+  pub fn add_item(&mut self, item: &Item) -> &mut Self {
+    self.content.push_str(&item.to_string());
+
+    self
+  }
+}
+impl Display for Writer {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    write!(
+      f,
+      "<?xml version=\"1.0\" encoding=\"UTF-8\"?><rss xmlns:atom=\"http://www.w3.org/2005/Atom\" \
+       version=\"2.0\"><channel>{}<atom:link href=\"{}\" rel=\"self\" \
+       type=\"application/rss+xml\" />{}</channel></rss>",
+      self.fields.iter().fold(String::new(), |mut acc, (k, v)| {
+        acc.push_str(&format!("<{}>{}</{}>", k, v, k));
+        acc
+      }),
+      self.link,
+      self.content
+    )
+  }
+}