Add TOML metadata parsing.

Cargo.lock

@@ -266,9 +266,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.40"
+version = "4.5.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40b6887a1d8685cebccf115538db5c0efe625ccac9696ad45c409d96566e910f"
+checksum = "2c5e4fcf9c21d2e544ca1ee9d8552de13019a42aa7dbf32747fa7aaf1df76e57"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -276,9 +276,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.40"
+version = "4.5.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0c66c08ce9f0c698cbce5c0279d0bb6ac936d8674174fe48f736533b964f59e"
+checksum = "fecb53a0e6fcfb055f686001bc2e2592fa527efaf38dbe81a6a9563562e57d41"
 dependencies = [
  "anstream",
  "anstyle",
@@ -288,9 +288,9 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.5.40"
+version = "4.5.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2c7947ae4cc3d851207c1adb5b5e260ff0cca11446b1d6d1423788e442257ce"
+checksum = "14cb31bb0a7d536caef2639baa7fad459e15c3144efefa6dbd1c84562c4739f6"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -495,7 +495,7 @@ dependencies = [
  "atomic 0.6.1",
  "pear",
  "serde",
- "toml",
+ "toml 0.8.23",
  "uncased",
  "version_check",
 ]
@@ -814,7 +814,7 @@ dependencies = [
  "rocket",
  "serde",
  "tera",
- "toml",
+ "toml 0.9.5",
 ]
 
 [[package]]
@@ -1637,9 +1637,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.11.1"
+version = "1.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+checksum = "23d7fd106d8c02486a8d64e778353d1cffe08ce79ac2e82f540c86d0facf6912"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1854,6 +1854,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40734c41988f7306bb04f0ecf60ec0f3f1caa34290e4e8ea471dcd3346483b83"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.9"
@@ -2160,11 +2169,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc1beb996b9d83529a9e75c17a1686767d148d70663143c7854d8b4a09ced362"
 dependencies = [
  "serde",
- "serde_spanned",
- "toml_datetime",
+ "serde_spanned 0.6.9",
+ "toml_datetime 0.6.11",
  "toml_edit",
 ]
 
+[[package]]
+name = "toml"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75129e1dc5000bfbaa9fee9d1b21f974f9fbad9daec557a521ee6e080825f6e8"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned 1.0.0",
+ "toml_datetime 0.7.0",
+ "toml_parser",
+ "toml_writer",
+ "winnow",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.11"
@@ -2174,6 +2198,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "toml_datetime"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bade1c3e902f58d73d3f294cd7f20391c1cb2fbcb643b73566bc773971df91e3"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "toml_edit"
 version = "0.22.27"
@@ -2182,18 +2215,33 @@ checksum = "41fe8c660ae4257887cf66394862d21dbca4a6ddd26f04a3560410406a2f819a"
 dependencies = [
  "indexmap",
  "serde",
- "serde_spanned",
- "toml_datetime",
+ "serde_spanned 0.6.9",
+ "toml_datetime 0.6.11",
  "toml_write",
  "winnow",
 ]
 
+[[package]]
+name = "toml_parser"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b551886f449aa90d4fe2bdaa9f4a2577ad2dde302c61ecf262d80b116db95c10"
+dependencies = [
+ "winnow",
+]
+
 [[package]]
 name = "toml_write"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
 
+[[package]]
+name = "toml_writer"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcc842091f2def52017664b53082ecbbeb5c7731092bad69d2c63050401dfd64"
+
 [[package]]
 name = "tower-service"
 version = "0.3.3"

Cargo.toml

@@ -7,9 +7,9 @@ edition = "2021"
 [dependencies]
 pulldown-cmark = "0.13.0"
 tera = "1.20.0"
-toml = "0.8.23"
+toml = "0.9.5"
 grep = "0.3.2"
-regex = "1.11.1"
+regex = "1.11.2"
 pathdiff = "0.2.3"
 
 [dependencies.chrono]
@@ -21,7 +21,7 @@ version = "0.20.2"
 default-features = false
 
 [dependencies.clap]
-version = "4.5.40"
+version = "4.5.45"
 features = ["derive"]
 
 [dependencies.rocket]

src/lib.rs

@@ -31,6 +31,8 @@ use pathdiff::diff_paths;
 
 use chrono::{DateTime, MappedLocalTime, TimeZone, Local};
 
+use pulldown_cmark::{Event, Tag, TagEnd};
+
 pub struct Historian {
     source_root: PathBuf,
     index_filename: String,
@@ -368,11 +370,47 @@ pub struct PageRenderer {
     tera: Tera
 }
 
-fn render_markdown (content: &tera::Value, args: &HashMap<String, tera::Value>) -> tera::Result<tera::Value> {
-    let parser = pulldown_cmark::Parser::new(content.as_str().unwrap());
+fn parse_markdown (content: &str, metadata: &mut Table) -> String {
+    let mut metadata_str = String::new();
+    let mut in_metadata = false;
+    let parser = pulldown_cmark::Parser::new_ext(content, pulldown_cmark::Options::ENABLE_YAML_STYLE_METADATA_BLOCKS).map(|event| {
+        match &event {
+            Event::Start(tag) => {
+                if let Tag::MetadataBlock(_) = tag {
+                    in_metadata = true;
+                }
+            }
+            Event::Text(text) => {
+                if in_metadata {
+                    metadata_str.push_str(text);
+                }
+            }
+            Event::End(tag) => {
+                if let TagEnd::MetadataBlock(_) = tag {
+                    if in_metadata {
+                        if let Ok(parsed_metadata) = toml::de::from_str::<Table>(&metadata_str) {
+                            println!("{:?}", parsed_metadata);
+                            for (key, value) in parsed_metadata {
+                                metadata.insert(key, value);
+                            }
+                        }
+                    }
+
+                    metadata_str.clear();
+                    in_metadata = false;
+                }                
+            }
+            _ => {}
+        }
+        event
+    });
     let mut html_output = String::new();
     pulldown_cmark::html::push_html(&mut html_output, parser);
-    Ok(tera::Value::String(html_output))
+    html_output
+}
+
+fn render_markdown (content: &tera::Value, args: &HashMap<String, tera::Value>) -> tera::Result<tera::Value> {
+    Ok(tera::Value::String(parse_markdown(content.as_str().unwrap(), &mut Table::new())))
 }
 
 impl PageRenderer {
@@ -506,6 +544,11 @@ impl<'a> Render<'a> {
         }
         self.context.insert("content", &content);
 
+        let mut metadata = Table::new();
+        let html_content = parse_markdown(&content, &mut metadata);
+        self.context.insert("html_content", &html_content);
+        self.context.insert("metadata", &metadata);
+
         let mut ancestors: VecDeque<&Page> = VecDeque::new();
         let mut ancestor = page.parent.as_ref();
         while ancestor.is_some() {

templates/page.html

@@ -1,4 +1,4 @@
 {% extends "base.html" %}
 {% block content %}
-{{ content | markdown | safe }}
+{{ html_content | safe }}
 {% endblock content %}