Add version() to utils to get version/about infos

qutebrowser/__init__.py

@@ -12,3 +12,6 @@ Subpackages:
     utils    - Misc utility code.
     widgets  - Qt widgets displayed on the screen.
 """
+
+__version_info__ = (0, 0, 0)
+__version__ = '.'.join(map(str, __version_info__))

qutebrowser/utils/__init__.py

@@ -1,8 +1,14 @@
 """Utility functions"""
 
 import re
+import sys
+import os.path
+import platform
+import subprocess
 
-from PyQt5.QtCore import QUrl
+from PyQt5.QtCore import QUrl, QT_VERSION_STR, PYQT_VERSION_STR, qVersion
+
+import qutebrowser
 
 
 def qurl(url):
@@ -12,3 +18,47 @@ def qurl(url):
     if not re.match(r'^\w+://', url):
         url = 'http://' + url
     return QUrl(url)
+
+
+def version():
+    """Return a string with various version informations."""
+    if sys.platform == 'linux':
+        osver = ', '.join((platform.dist()))
+    elif sys.platform == 'win32':
+        osver = ', '.join((platform.win32_ver()))
+    elif sys.platform == 'darwin':
+        osver = ', '.join((platform.mac_ver()))
+    else:
+        osver = '?'
+
+    gitver = _git_str()
+
+    lines = [
+        'qutebrowser v{}\n\n'.format(qutebrowser.__version__),
+        'Python {}\n'.format(platform.python_version()),
+        'Qt {}, runtime {}\n'.format(QT_VERSION_STR, qVersion()),
+        'PyQt {}\n\n'.format(PYQT_VERSION_STR),
+        'Platform: {}, {}\n'.format(platform.platform(),
+                                    platform.architecture()[0]),
+        'OS Version: {}\n'.format(osver),
+    ]
+
+    if gitver is not None:
+        lines.append('\nGit commit: {}'.format(gitver))
+
+    return ''.join(lines)
+
+
+def _git_str():
+    """Try to find out git version and return a string if possible.
+
+    Return None if there was an error or we're not in a git repo.
+    """
+    # FIXME this runs in PWD, not the qutebrowser dir?!
+    if not os.path.isdir(".git"):
+        return None
+    try:
+        return subprocess.check_output(['git', 'describe', '--tags', '--dirty',
+                                        '--always']).decode('UTF-8').strip()
+    except (subprocess.CalledProcessError, FileNotFoundError):
+        return None