Add sourcehut link parsing (#1190)

* Add sourcehut link parsing

* refactor: GitRemoteRepo::GitHubRepo -> ..::GitHub, repo_slug -> slug

https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names

* readme.md: change bitbucket to sourcehut

2 files changed, 80 insertions, 21 deletions

diff --git a/README.md b/README.md
index 6ac1a819..07160e4a 100644
--- a/README.md
+++ b/README.md
@@ -47,12 +47,12 @@ Delta has many features and is very customizable; please see the [user manual](h
 - Line numbering
 - `n` and `N` keybindings to move between files in large diffs, and between diffs in `log -p` views (`--navigate`)
 - Improved merge conflict display
-- Improved `git blame` display (syntax highlighting; `--hyperlinks` formats commits as links to GitHub/GitLab/Bitbucket etc)
+- Improved `git blame` display (syntax highlighting; `--hyperlinks` formats commits as links to GitHub/GitLab/SourceHut etc)
 - Syntax-highlights grep output from `rg`, `git grep`, `grep`, etc
 - Support for Git's `--color-moved` feature.
 - Code can be copied directly from the diff (`-/+` markers are removed by default).
 - `diff-highlight` and `diff-so-fancy` emulation modes
-- Commit hashes can be formatted as terminal [hyperlinks](https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda) to the GitHub/GitLab/Bitbucket page (`--hyperlinks`).
+- Commit hashes can be formatted as terminal [hyperlinks](https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda) to the GitHub/GitLab/SourceHut page (`--hyperlinks`).
   File paths can also be formatted as hyperlinks for opening in your OS.
 - Stylable box/line decorations to draw attention to commit, file and hunk header sections.
 - Style strings (foreground color, background color, font attributes) are supported for >20 stylable elements, using the same color/style language as git
diff --git a/src/git_config/git_config_entry.rs b/src/git_config/git_config_entry.rs
index 66a9f840..56dcc1c2 100644
--- a/src/git_config/git_config_entry.rs
+++ b/src/git_config/git_config_entry.rs
@@ -14,18 +14,22 @@ pub enum GitConfigEntry {
 
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub enum GitRemoteRepo {
-    GitHubRepo { repo_slug: String },
-    GitLabRepo { repo_slug: String },
+    GitHub { slug: String },
+    GitLab { slug: String },
+    SourceHut { slug: String },
 }
 
 impl GitRemoteRepo {
     pub fn format_commit_url(&self, commit: &str) -> String {
         match self {
-            Self::GitHubRepo { repo_slug } => {
-                format!("https://github.com/{}/commit/{}", repo_slug, commit)
+            Self::GitHub { slug } => {
+                format!("https://github.com/{}/commit/{}", slug, commit)
             }
-            Self::GitLabRepo { repo_slug } => {
-                format!("https://gitlab.com/{}/-/commit/{}", repo_slug, commit)
+            Self::GitLab { slug } => {
+                format!("https://gitlab.com/{}/-/commit/{}", slug, commit)
+            }
+            Self::SourceHut { slug } => {
+                format!("https://git.sr.ht/{}/commit/{}", slug, commit)
             }
         }
     }
@@ -61,30 +65,51 @@ lazy_static! {
         "
     )
     .unwrap();
+    static ref SOURCEHUT_REMOTE_URL: Regex = Regex::new(
+        r"(?x)
+        ^
+        (?:https://|git@)? # Support both HTTPS and SSH URLs, SSH URLs optionally omitting the git@
+        git\.sr\.ht
+        [:/]              # This separator differs between SSH and HTTPS URLs
+        ~([^/]+)          # Capture the username
+        /
+        (.+)             # Capture the repo name
+        $
+        "
+    )
+    .unwrap();
 }
 
 impl FromStr for GitRemoteRepo {
     type Err = Error;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         if let Some(caps) = GITHUB_REMOTE_URL.captures(s) {
-            Ok(Self::GitHubRepo {
-                repo_slug: format!(
+            Ok(Self::GitHub {
+                slug: format!(
                     "{user}/{repo}",
                     user = caps.get(1).unwrap().as_str(),
                     repo = caps.get(2).unwrap().as_str()
                 ),
             })
         } else if let Some(caps) = GITLAB_REMOTE_URL.captures(s) {
-            Ok(Self::GitLabRepo {
-                repo_slug: format!(
+            Ok(Self::GitLab {
+                slug: format!(
                     "{user}{groups}/{repo}",
                     user = caps.get(1).unwrap().as_str(),
                     groups = caps.get(2).map(|x| x.as_str()).unwrap_or_default(),
                     repo = caps.get(3).unwrap().as_str()
                 ),
             })
+        } else if let Some(caps) = SOURCEHUT_REMOTE_URL.captures(s) {
+            Ok(Self::SourceHut {
+                slug: format!(
+                    "~{user}/{repo}",
+                    user = caps.get(1).unwrap().as_str(),
+                    repo = caps.get(2).unwrap().as_str()
+                ),
+            })
         } else {
-            Err("Not a GitHub or GitLab repo.".into())
+            Err("Not a GitHub, GitLab or SourceHut repo.".into())
         }
     }
 }
@@ -108,8 +133,8 @@ mod tests {
             assert!(parsed.is_ok());
             assert_eq!(
                 parsed.unwrap(),
-                GitRemoteRepo::GitHubRepo {
-                    repo_slug: "dandavison/delta".to_string()
+                GitRemoteRepo::GitHub {
+                    slug: "dandavison/delta".to_string()
                 }
             );
         }
@@ -117,8 +142,8 @@ mod tests {
 
     #[test]
     fn test_format_github_commit_link() {
-        let repo = GitRemoteRepo::GitHubRepo {
-            repo_slug: "dandavison/delta".to_string(),
+        let repo = GitRemoteRepo::GitHub {
+            slug: "dandavison/delta".to_string(),
         };
         let commit_hash = "d3b07384d113edec49eaa6238ad5ff00";
         assert_eq!(
@@ -153,8 +178,8 @@ mod tests {
             assert!(parsed.is_ok());
             assert_eq!(
                 parsed.unwrap(),
-                GitRemoteRepo::GitLabRepo {
-                    repo_slug: expected.to_string()
+                GitRemoteRepo::GitLab {
+                    slug: expected.to_string()
                 }
             );
         }
@@ -162,8 +187,8 @@ mod tests {
 
     #[test]
     fn test_format_gitlab_commit_link() {
-        let repo = GitRemoteRepo::GitLabRepo {
-            repo_slug: "proj/grp/repo".to_string(),
+        let repo = GitRemoteRepo::GitLab {
+            slug: "proj/grp/repo".to_string(),
         };
         let commit_hash = "d3b07384d113edec49eaa6238ad5ff00";
         assert_eq!(
@@ -171,4 +196,38 @@ mod tests {
             format!("https://gitlab.com/proj/grp/repo/-/commit/{}", commit_hash)
         )
     }
+
+    #[test]
+    fn test_parse_sourcehut_urls() {
+        let urls = &[
+            "https://git.sr.ht/~someuser/somerepo",
+            "git@git.sr.ht:~someuser/somerepo",
+            "git.sr.ht:~someuser/somerepo",
+        ];
+        for url in urls {
+            let parsed = GitRemoteRepo::from_str(url);
+            assert!(parsed.is_ok());
+            assert_eq!(
+                parsed.unwrap(),
+                GitRemoteRepo::SourceHut {
+                    slug: "~someuser/somerepo".to_string()
+                }
+            );
+        }
+    }
+
+    #[test]
+    fn test_format_sourcehut_commit_link() {
+        let repo = GitRemoteRepo::SourceHut {
+            slug: "~someuser/somerepo".to_string(),
+        };
+        let commit_hash = "df41ac86f08a40e64c76062fd67e238522c14990";
+        assert_eq!(
+            repo.format_commit_url(commit_hash),
+            format!(
+                "https://git.sr.ht/~someuser/somerepo/commit/{}",
+                commit_hash
+            )
+        )
+    }
 }