Docs: Recode README.rus.txt to utf-8

[m_librarian.git] / m_librarian / config.py

diff --git a/m_librarian/config.py b/m_librarian/config.py
index c57406ba1601e11901b337e43b8ba6a01d60c340..4abed14ebc699d430f02cd0940abd5754c358c96 100755 (executable)
--- a/m_librarian/config.py
+++ b/m_librarian/config.py
@@ -1,32 +1,62 @@
 #! /usr/bin/env python
 
-__all__ = ['ml_conf']
-
+from __future__ import print_function
 import os
-from ConfigParser import SafeConfigParser
-
-config_dirs = []
-if 'XDG_CONFIG_HOME' in os.environ:
-    config_dirs.append(os.environ['XDG_CONFIG_HOME'])
-if 'XDG_CONFIG_DIRS' in os.environ:
-    config_dirs.extend(os.environ['XDG_CONFIG_DIRS'].split(':'))
-home_config = os.path.expanduser('~/.config')
-if home_config not in config_dirs:
-    config_dirs.append(home_config)
-
-for d in config_dirs:
-    ml_conf_file = os.path.join(d, 'm_librarian.conf')
-    if os.path.exists(ml_conf_file):
-        ml_conf = SafeConfigParser()
-        ml_conf.read(ml_conf_file)
-        break
-else:
-    ml_conf = ml_conf_file = None
+try:
+    from ConfigParser import RawConfigParser
+except ImportError:  # py3
+    from configparser import RawConfigParser
+
+__all__ = ['get_config']
+
+
+def _find_config_dirs_posix():
+    config_dirs = []
+    if 'XDG_CONFIG_HOME' in os.environ:
+        config_dirs.append(os.environ['XDG_CONFIG_HOME'])
+    if 'XDG_CONFIG_DIRS' in os.environ:
+        config_dirs.extend(os.environ['XDG_CONFIG_DIRS'].split(':'))
+    home_config = os.path.expanduser('~/.config')
+    if home_config not in config_dirs:
+        config_dirs.append(home_config)
+    return config_dirs
+
+
+def find_config_dirs():
+    if os.name == 'posix':
+        return _find_config_dirs_posix()
+    raise OSError("Unknow OS")
+
+
+def find_config_file(config_dirs=None):
+    if config_dirs is None:
+        config_dirs = find_config_dirs()
+    for d in config_dirs:
+        ml_conf_file = os.path.join(d, 'm_librarian.conf')
+        if os.path.exists(ml_conf_file):
+            return ml_conf_file
+    else:
+        raise IOError("Cannot find m_librarian.conf in %s" % config_dirs)
+
+
+_ml_config = None
+
+
+def get_config(config_path=None):
+    global _ml_config
+    if _ml_config is None:
+        if config_path is None:
+            config_path = find_config_file()
+        _ml_config = RawConfigParser()
+        _ml_config.read(config_path)
+    return _ml_config
 
 
 def test():
-    print "Config dirs:", config_dirs
-    print "Config file:", ml_conf_file
+    config_dirs = find_config_dirs()
+    print("Config dirs:", config_dirs)
+    print("Config file:", find_config_file(config_dirs))
+
 
 if __name__ == '__main__':
     test()