bencher: move html gen into own module

crates/bencher/src/html.rs

@@ -0,0 +1,80 @@
+use indexmap::{IndexMap, IndexSet};
+use itertools::Itertools;
+
+use crate::set::TrackerCoreCountResults;
+
+pub fn html_best_results(results: &[TrackerCoreCountResults]) -> String {
+    let mut all_implementation_names = IndexSet::new();
+
+    for core_count_results in results {
+        all_implementation_names.extend(
+            core_count_results
+                .implementations
+                .iter()
+                .map(|r| r.name.clone()),
+        );
+    }
+
+    let mut data_rows = Vec::new();
+
+    for core_count_results in results {
+        let best_results = core_count_results
+            .implementations
+            .iter()
+            .map(|implementation| (implementation.name.clone(), implementation.best_result()))
+            .collect::<IndexMap<_, _>>();
+
+        let best_results_for_all_implementations = all_implementation_names
+            .iter()
+            .map(|name| best_results.get(name).cloned().flatten())
+            .collect::<Vec<_>>();
+
+        let data_row = format!(
+            "
+            <tr>
+                <th>{}</th>
+                {}
+            </tr>
+            ",
+            core_count_results.core_count,
+            best_results_for_all_implementations
+                .into_iter()
+                .map(|result| {
+                    if let Some(r) = result {
+                        format!(
+                            r#"<td><span title="{}, avg cpu utilization: {}%">{}</span></td>"#,
+                            r.tracker_info,
+                            r.tracker_process_stats.avg_cpu_utilization,
+                            r.average_responses,
+                        )
+                    } else {
+                        "<td>-</td>".to_string()
+                    }
+                })
+                .join("\n"),
+        );
+
+        data_rows.push(data_row);
+    }
+
+    format!(
+        "
+        <table>
+            <thead>
+                <tr>
+                    <th>CPU cores</th>
+                    {}
+                </tr>
+            </thead>
+            <tbody>
+                {}
+            </tbody>
+        </table>
+        ",
+        all_implementation_names
+            .iter()
+            .map(|name| format!("<th>{name}</th>"))
+            .join("\n"),
+        data_rows.join("\n")
+    )
+}