pkgs/git-show-link: Normalize paths

pkgs/git-show-link/git-show-link.py

@@ -4,17 +4,22 @@ import argparse
 from dataclasses import dataclass
 import re
 import subprocess
+from pathlib import Path
 
 REMOTE_TYPES = {
     "github": {
         "match": re.compile(r'git@github.com:(?P<username>[\w\.-]+)/(?P<project>[\w\.-]+).git'),
         "format-branch": lambda g: f"https://github.com/{g.username}/{g.project}/tree/{g.branch}/",
+        "format-branch-file": lambda g: f"https://github.com/{g.username}/{g.project}/blob/{g.branch}/{g.path}",
         "format-commit": lambda g: f"https://github.com/{g.username}/{g.project}/commit/{g.commit}/",
+        "format-commit-file": lambda g: f"https://github.com/{g.username}/{g.project}/blob/{g.commit}/{g.path}",
     },
     "gitea": {
         "match": re.compile(r'(?P<gituser>[\w\.-]+)@(?P<host>[\w\.-]+):(?P<username>[\w\.-]+)/(?P<project>[\w\.-]+).git'),
         "format-branch": lambda g: f"https://{g.host}/{g.username}/{g.project}/src/branch/{g.branch}/",
+        "format-branch-file": lambda g: f"https://{g.host}/{g.username}/{g.project}/src/branch/{g.branch}/{g.path}",
         "format-commit": lambda g: f"https://{g.host}/{g.username}/{g.project}/commit/{g.commit}/",
+        "format-commit-file": lambda g: f"https://{g.host}/{g.username}/{g.project}/src/commit/{g.commit}/{g.path}",
     },
 }
 
@@ -26,15 +31,24 @@ class FormatArgs:
     project: str = None
     commit: str = None
     branch: str = None
+    path: str = None
 
 def is_git_repo():
     s = subprocess.run(["git", "rev-parse"], capture_output=True, text=True)
 
     return s.returncode == 0
 
+def get_git_dir():
+    s = subprocess.run(["git", "rev-parse", "--show-toplevel"], capture_output=True, text=True)
+    return Path(s.stdout.strip())
+
 def get_remote_branch():
     s = subprocess.run(["git", "status", "--porcelain", "-uno", "-b", "--no-ahead-behind"], capture_output=True, text=True)
 
+    if s.stdout.startswith("## HEAD (no branch)"):
+        print("Detached head, can't link")
+        exit(1)
+
     git_status_branch_info = s.stdout.splitlines()[0][3:].split()[0]
 
     branches = git_status_branch_info.split("...")
@@ -70,6 +84,7 @@ def main():
         prog='git-show-link',
     )
 
+    parser.add_argument("path", nargs="?", default=None, help="Path to link to specific file or directory")
     parser.add_argument("--branch", dest="display_branch", action='store_true', help="Display link to branch, instead to commit")
     parser.add_argument("--remote-type", dest="remote_type", choices=REMOTE_TYPES.keys(), help="Specify remote type")
 
@@ -80,6 +95,8 @@ def main():
 
         exit(1)
 
+    git_dir_path = get_git_dir()
+
     r = get_remote_branch()
 
     remote_url = get_remote_url(r["remote"])
@@ -103,13 +120,34 @@ def main():
 
         g = FormatArgs(**m.groupdict())
 
-        if args.display_branch:
-            g.branch = r["branch"]
-            print(remote_type["format-branch"](g))
+        if args.path is not None:
+            path = Path(args.path).absolute()
+            path = path.relative_to(git_dir_path)
+
+            path = str(path)
+
+            if path == ".":
+                path = ""
+
+            g.path = path
+
+        if args.path is not None:
+            if args.display_branch:
+                g.branch = r["branch"]
+                print(remote_type["format-branch-file"](g))
+            else:
+                commit = get_last_commit()
+                g.commit = commit
+                print(remote_type["format-commit-file"](g))
         else:
-            commit = get_last_commit()
-            g.commit = commit
-            print(remote_type["format-commit"](g))
+            if args.display_branch:
+                g.branch = r["branch"]
+                print(remote_type["format-branch"](g))
+            else:
+                commit = get_last_commit()
+                g.commit = commit
+                print(remote_type["format-commit"](g))
+
         break
 
     if not remote_type_found: