Generate newer and older links.

src/command/build/render.rs

@@ -7,6 +7,7 @@ use include_dir::Dir;
 use crate::config::Config;
 use crate::error::CustomError;
 use crate::intermediate::convert_blog_post_page_to_render_context;
+use crate::intermediate::get_web_path;
 use crate::intermediate::BlogPost;
 use crate::render::DusterRenderer;
 use crate::render::RendererIntegration;
@@ -122,8 +123,41 @@ impl SiteRenderer {
 
         // For each group, create a RenderBlogStream.
         let num_stream_pages = stream_chunks.len();
-        for chunk in stream_chunks {
+        for (page_num, chunk) in stream_chunks.into_iter().enumerate() {
-            // foo
+            let output_file = if page_num == 0 {
+                self.output_directory.join("index.html")
+            } else {
+                self.output_directory
+                    .join("stream")
+                    .join(format!("{}.html", page_num))
+            };
+            let newer_link = if page_num == 0 {
+                None
+            } else if page_num == 1 {
+                Some(get_web_path(
+                    config,
+                    &self.output_directory,
+                    &output_file,
+                    "index.html",
+                )?)
+            } else {
+                Some(get_web_path(
+                    config,
+                    &self.output_directory,
+                    &output_file,
+                    format!("stream/{}.html", page_num - 1),
+                )?)
+            };
+            let older_link = if page_num == (num_stream_pages - 1) {
+                None
+            } else {
+                Some(get_web_path(
+                    config,
+                    &self.output_directory,
+                    &output_file,
+                    format!("stream/{}.html", page_num + 1),
+                )?)
+            };
         }
         Ok(())
     }

src/context/blog_stream.rs

@@ -27,7 +27,7 @@ impl RenderBlogStream {
         config: &Config,
         output_directory: &Path,
         output_file: &Path,
-        original: &Vec<BlogPost>,
+        original: &[&BlogPost],
     ) -> Result<RenderBlogStream, CustomError> {
         todo!()
     }

src/intermediate/convert.rs

@@ -90,7 +90,7 @@ pub(crate) fn convert_blog_post_page_to_render_context<D: AsRef<Path>, F: AsRef<
     Ok(ret)
 }
 
-fn get_web_path<D: AsRef<Path>, F: AsRef<Path>, P: AsRef<Path>>(
+pub(crate) fn get_web_path<D: AsRef<Path>, F: AsRef<Path>, P: AsRef<Path>>(
     config: &Config,
     output_directory: D,
     containing_file: F,

src/intermediate/mod.rs

@@ -77,6 +77,7 @@ pub(crate) use code::ICode;
 pub(crate) use comment::IComment;
 pub(crate) use comment_block::ICommentBlock;
 pub(crate) use convert::convert_blog_post_page_to_render_context;
+pub(crate) use convert::get_web_path;
 pub(crate) use diary_sexp::IDiarySexp;
 pub(crate) use document_element::IDocumentElement;
 pub(crate) use drawer::IDrawer;