implement getting git version info

PyTeX/build/build/builder.py

@@ -13,6 +13,8 @@ from .pytex_file import PyTeXSourceFile
 from .relative_path import RelativePath
 from .hashing import md5
 from .pytex_output_file import PyTeXOutputFile
+from PyTeX.format.git_version_info import GitVersionInfo
+from ..versioning.git.get_version_info import get_repo_status_info_from_file
 
 
 class PyTeXBuilder:
@@ -44,6 +46,18 @@ class PyTeXBuilder:
         self._files_to_overwrite: Set[RelativePath] = set()
         self._files_to_build: Set[PyTeXSourceFile] = set()
         self._tmp_dir: Path = self._root_dir / '.pytex'
+        self._git_version_info: GitVersionInfo = self._foo()
+        pass
+
+    def _foo(self):
+        version = GitVersionInfo()
+        version.repo_version = get_repo_status_info_from_file(
+            self._root_dir
+        )
+        version.pytex_version = get_repo_status_info_from_file(
+            Path(__file__)
+        )
+        return version
 
     @classmethod
     def is_ignored_in_build_dir(cls, path: RelativePath):

PyTeX/build/versioning/git/get_version_info.py

@@ -0,0 +1,27 @@
+import git
+from PyTeX.format.repo_status_info import RepoStatusInfo
+from .recent import get_latest_commit
+from pathlib import Path
+
+
+def get_repo_status_info_from_file(file: Path) -> RepoStatusInfo:
+    try:
+        repo = git.Repo(file, search_parent_directories=True)
+    except git.InvalidGitRepositoryError:
+        return RepoStatusInfo()
+    return get_repo_status_info(repo)
+
+
+def get_repo_status_info(repo: git.Repo) -> RepoStatusInfo:
+    info = RepoStatusInfo()
+    try:
+        info.branch = repo.active_branch
+    except TypeError:  # No branch available
+        pass
+    try:
+        info.version = repo.git.describe()
+    except git.GitCommandError:  # No tags available to describe commit
+        pass
+    info.commit_hash = get_latest_commit(repo).hexsha
+    info.dirty = repo.is_dirty(untracked_files=True)
+    return info

PyTeX/build/versioning/git/recent.py

@@ -4,7 +4,7 @@ from typing import Union, Optional, List
 import git
 
 
-def get_latest_commit(repo):
+def get_latest_commit(repo) -> git.Commit:
     if repo.head.is_detached:
         return repo.head.commit
     else:

PyTeX/format/git_version_info.py

@@ -33,6 +33,10 @@ class GitVersionInfo(Config):
         else:
             return self._pytex_version
 
+    @pytex_version.setter
+    def pytex_version(self, pytex_version: RepoStatusInfo):
+        self._pytex_version = pytex_version
+
     @property
     def repo_version(self) -> RepoStatusInfo:
         if self._repo_version is None:
@@ -40,6 +44,10 @@ class GitVersionInfo(Config):
         else:
             return self._repo_version
 
+    @repo_version.setter
+    def repo_version(self, repo_version: RepoStatusInfo):
+        self._repo_version = repo_version
+
     @property
     def has_pytex_version(self) -> bool:
         return self._pytex_version is not None