Allow analyzing crates in sub-directories of repo root (#170)

* Allow analyzing crates in sub-directories (#95)

* Add field to the main page form for selecting an inner path

* chore: make clippy happy

* Display sub-directory tree in status overview

* Append the query parameter to the SVG links

* Clippy fixes

* Update assets/links.js

Co-authored-by: Eduardo Pinho <enet4mikeenet@gmail.com>

Co-authored-by: Eduardo Pinho <enet4mikeenet@gmail.com>

assets/links.js

@@ -4,6 +4,12 @@ function buildRepoLink() {
     let hoster = formRef.elements["hosterSelect"].value.toLowerCase();
     let owner = formRef.elements["owner"].value;
     let repoName = formRef.elements["repoName"].value;
+    let innerPath = formRef.elements["innerPath"].value;
+
+    let qparams = "";
+    if (innerPath.length > 0) {
+        qparams = "?path=" + encodeURIComponent(innerPath);
+    }
 
     if (hoster === "gitea") {
         let baseUrl = formRef.elements["baseUrl"].value;
@@ -18,9 +24,9 @@ function buildRepoLink() {
             return;
         }
 
-        window.location.href = `/repo/${hoster}/${baseUrl}/${owner}/${repoName}`;
+        window.location.assign(`/repo/${hoster}/${baseUrl}/${owner}/${repoName}${qparams}`);
     } else {
-        window.location.href = `/repo/${hoster}/${owner}/${repoName}`;
+        window.location.assign(`/repo/${hoster}/${owner}/${repoName}${qparams}`);
     }
 }
 
@@ -32,8 +38,8 @@ function buildCrateLink() {
 
     if (crateVer.length == 0) {
         // default to latest version
-        window.location.href = `/crate/${crate}`;
+        window.location.assign(`/crate/${crate}`);
     } else {
-        window.location.href = `/crate/${crate}/${crateVer}`;
+        window.location.assign(`/crate/${crate}/${crateVer}`);
     }
 }

src/engine/mod.rs

@@ -170,20 +170,25 @@ impl Engine {
     pub async fn analyze_repo_dependencies(
         &self,
         repo_path: RepoPath,
+        sub_path: &Option<String>,
     ) -> Result<AnalyzeDependenciesOutcome, Error> {
         let start = Instant::now();
 
-        let entry_point = RelativePath::new("/").to_relative_path_buf();
+        let mut entry_point = RelativePath::new("/").to_relative_path_buf();
+
+        if let Some(inner_path) = sub_path {
+            entry_point.push(inner_path);
+        }
+
         let engine = self.clone();
 
         let manifest_output = crawl_manifest(self.clone(), repo_path.clone(), entry_point).await?;
 
-        let engine_for_analyze = engine.clone();
         let futures = manifest_output
             .crates
             .into_iter()
             .map(|(crate_name, deps)| async {
-                let analyzed_deps = analyze_dependencies(engine_for_analyze.clone(), deps).await?;
+                let analyzed_deps = analyze_dependencies(engine.clone(), deps).await?;
                 Ok::<_, Error>((crate_name, analyzed_deps))
             })
             .collect::<Vec<_>>();

src/server/mod.rs

@@ -186,7 +186,7 @@ impl App {
         let qual = params.find("qual").expect("route param 'qual' not found");
         let name = params.find("name").expect("route param 'name' not found");
 
-        let badge_knobs = BadgeKnobs::from_query_string(req.uri().query());
+        let extra_knobs = ExtraConfig::from_query_string(req.uri().query());
 
         let repo_path_result = RepoPath::from_parts(site, qual, name);
 
@@ -204,7 +204,7 @@ impl App {
             Ok(repo_path) => {
                 let analyze_result = server
                     .engine
-                    .analyze_repo_dependencies(repo_path.clone())
+                    .analyze_repo_dependencies(repo_path.clone(), &extra_knobs.path)
                     .await;
 
                 match analyze_result {
@@ -214,7 +214,7 @@ impl App {
                             None,
                             format,
                             SubjectPath::Repo(repo_path),
-                            badge_knobs,
+                            extra_knobs,
                         );
                         Ok(response)
                     }
@@ -223,7 +223,7 @@ impl App {
                             Some(analysis_outcome),
                             format,
                             SubjectPath::Repo(repo_path),
-                            badge_knobs,
+                            extra_knobs,
                         );
                         Ok(response)
                     }
@@ -345,7 +345,7 @@ impl App {
         };
 
         let crate_path_result = CratePath::from_parts(name, &version);
-        let badge_knobs = BadgeKnobs::from_query_string(req.uri().query());
+        let badge_knobs = ExtraConfig::from_query_string(req.uri().query());
 
         match crate_path_result {
             Err(err) => {
@@ -393,11 +393,13 @@ impl App {
         analysis_outcome: Option<AnalyzeDependenciesOutcome>,
         format: StatusFormat,
         subject_path: SubjectPath,
-        badge_knobs: BadgeKnobs,
+        badge_knobs: ExtraConfig,
     ) -> Response<Body> {
         match format {
             StatusFormat::Svg => views::badge::response(analysis_outcome.as_ref(), badge_knobs),
-            StatusFormat::Html => views::html::status::render(analysis_outcome, subject_path),
+            StatusFormat::Html => {
+                views::html::status::render(analysis_outcome, subject_path, badge_knobs)
+            }
         }
     }
 
@@ -430,27 +432,34 @@ fn not_found() -> Response<Body> {
 static SELF_BASE_URL: Lazy<String> =
     Lazy::new(|| env::var("BASE_URL").unwrap_or_else(|_| "http://localhost:8080".to_string()));
 
+/// Configuration options supplied through Get Parameters
 #[derive(Debug, Clone, Default)]
-pub struct BadgeKnobs {
+pub struct ExtraConfig {
+    /// Badge style to show
     style: BadgeStyle,
+    /// Whether the inscription _"dependencies"_ should be abbreviated as _"deps"_ in the badge.
     compact: bool,
+    /// Path in which the crate resides within the repository
+    path: Option<String>,
 }
 
-impl BadgeKnobs {
+impl ExtraConfig {
     fn from_query_string(qs: Option<&str>) -> Self {
         #[derive(Debug, Clone, Default, Deserialize)]
-        struct BadgeKnobsPartial {
+        struct ExtraConfigPartial {
             style: Option<BadgeStyle>,
             compact: Option<bool>,
+            path: Option<String>,
         }
 
-        let badge_knobs = qs
-            .and_then(|qs| serde_urlencoded::from_str::<BadgeKnobsPartial>(qs).ok())
+        let extra_config = qs
+            .and_then(|qs| serde_urlencoded::from_str::<ExtraConfigPartial>(qs).ok())
             .unwrap_or_default();
 
         Self {
-            style: badge_knobs.style.unwrap_or_default(),
-            compact: badge_knobs.compact.unwrap_or_default(),
+            style: extra_config.style.unwrap_or_default(),
+            compact: extra_config.compact.unwrap_or_default(),
+            path: extra_config.path,
         }
     }
 }

src/server/views/badge.rs

@@ -3,11 +3,11 @@ use hyper::header::CONTENT_TYPE;
 use hyper::{Body, Response};
 
 use crate::engine::AnalyzeDependenciesOutcome;
-use crate::server::BadgeKnobs;
+use crate::server::ExtraConfig;
 
 pub fn badge(
     analysis_outcome: Option<&AnalyzeDependenciesOutcome>,
-    badge_knobs: BadgeKnobs,
+    badge_knobs: ExtraConfig,
 ) -> Badge {
     let subject = if badge_knobs.compact {
         "deps"
@@ -74,7 +74,7 @@ pub fn badge(
 
 pub fn response(
     analysis_outcome: Option<&AnalyzeDependenciesOutcome>,
-    badge_knobs: BadgeKnobs,
+    badge_knobs: ExtraConfig,
 ) -> Response<Body> {
     let badge = badge(analysis_outcome, badge_knobs).to_svg();
 

src/server/views/html/index.rs

@@ -57,6 +57,16 @@ fn link_forms() -> Markup {
                             p class="help" id="baseUrlHelp" { "Base URL of the Git instance the project is hosted on. Only relevant for Gitea Instances." }
                         }
 
+                        div class="field" {
+                            label class="label" { "Path in Repository" }
+
+                            div class="control" {
+                                input class="input" type="text" id="innerPath" placeholder="project1/rust-stuff";
+                            }
+
+                            p class="help" id="baseUrlHelp" { "Path within the repository where the " code { "Cargo.toml" } " file is located." }
+                        }
+
                         input type="submit" class="button is-primary" value="Check" onclick="buildRepoLink();";
                     }
                 }

src/server/views/html/status.rs

@@ -11,7 +11,7 @@ use crate::models::crates::{AnalyzedDependencies, AnalyzedDependency, CrateName}
 use crate::models::repo::RepoSite;
 use crate::models::SubjectPath;
 use crate::server::views::badge;
-use crate::server::BadgeKnobs;
+use crate::server::ExtraConfig;
 
 fn get_crates_url(name: impl AsRef<str>) -> String {
     format!("https://crates.io/crates/{}", name.as_ref())
@@ -161,6 +161,23 @@ fn render_title(subject_path: &SubjectPath) -> Markup {
     }
 }
 
+/// Renders a path within a repository as HTML.
+///
+/// Panics, when the string is empty.
+fn render_path(inner_path: &str) -> Markup {
+    let path_icon = PreEscaped(fa(FaType::Regular, "folder-open").unwrap());
+
+    let mut splitted = inner_path.trim_matches('/').split('/');
+    let init = splitted.next().unwrap().to_string();
+    let path_spaced = splitted.fold(init, |b, val| b + " / " + val);
+
+    html! {
+        { (path_icon) }
+        " / "
+        (path_spaced)
+    }
+}
+
 fn dependencies_pluralized(count: usize) -> &'static str {
     if count == 1 {
         "dependency"
@@ -332,6 +349,7 @@ fn render_failure(subject_path: SubjectPath) -> Markup {
 fn render_success(
     analysis_outcome: AnalyzeDependenciesOutcome,
     subject_path: SubjectPath,
+    extra_config: ExtraConfig,
 ) -> Markup {
     let self_path = match subject_path {
         SubjectPath::Repo(ref repo_path) => format!(
@@ -347,7 +365,7 @@ fn render_success(
     let status_base_url = format!("{}/{}", &super::SELF_BASE_URL as &str, self_path);
 
     let status_data_uri =
-        badge::badge(Some(&analysis_outcome), BadgeKnobs::default()).to_svg_data_uri();
+        badge::badge(Some(&analysis_outcome), extra_config.clone()).to_svg_data_uri();
 
     let hero_class = if analysis_outcome.any_always_insecure() {
         "is-danger"
@@ -357,6 +375,15 @@ fn render_success(
         "is-success"
     };
 
+    // NOTE(feliix42): While we could encode the whole `ExtraConfig` struct here, I've decided
+    // against doing so as this would always append the defaults for badge style and compactness
+    // settings to the URL, bloating it unnecessarily, we can do that once it's needed.
+    let options = serde_urlencoded::to_string([(
+        "path",
+        extra_config.path.clone().unwrap_or_default().as_str(),
+    )])
+    .unwrap();
+
     html! {
         section class=(format!("hero {}", hero_class)) {
             div class="hero-head" { (super::render_navbar()) }
@@ -366,13 +393,23 @@ fn render_success(
                         (render_title(&subject_path))
                     }
 
+                    @if let Some(ref path) = extra_config.path {
+                        p class="subtitle" {
+                            (render_path(path))
+                        }
+                    }
+
                     img src=(status_data_uri);
                 }
             }
             div class="hero-footer" {
                 div class="container" {
                     pre class="is-size-7" {
-                        (format!("[![dependency status]({}/status.svg)]({})", status_base_url, status_base_url))
+                        @if extra_config.path.is_some() {
+                            (format!("[![dependency status]({}/status.svg?{opt})]({}?{opt})", status_base_url, status_base_url, opt = options))
+                        } @else {
+                            (format!("[![dependency status]({}/status.svg)]({})", status_base_url, status_base_url))
+                        }
                     }
                 }
             }
@@ -416,6 +453,7 @@ fn render_success(
 pub fn render(
     analysis_outcome: Option<AnalyzeDependenciesOutcome>,
     subject_path: SubjectPath,
+    extra_config: ExtraConfig,
 ) -> Response<Body> {
     let title = match subject_path {
         SubjectPath::Repo(ref repo_path) => {
@@ -427,7 +465,7 @@ pub fn render(
     };
 
     if let Some(outcome) = analysis_outcome {
-        super::render_html(&title, render_success(outcome, subject_path))
+        super::render_html(&title, render_success(outcome, subject_path, extra_config))
     } else {
         super::render_html(&title, render_failure(subject_path))
     }