implements #19

pubs/config/conf.py

@@ -2,6 +2,7 @@ import os
 import platform
 import shutil
 
+
 import configobj
 import validate
 
@@ -10,6 +11,7 @@ from .spec import configspec
 
 DFT_CONFIG_PATH = os.path.expanduser('~/.pubsrc')
 
+
 def load_default_conf():
     """Load the default configuration"""
     default_conf = configobj.ConfigObj(configspec=configspec)
@@ -17,6 +19,7 @@ def load_default_conf():
     default_conf.validate(validator, copy=True)
     return default_conf
 
+
 def get_confpath(verify=True):
     """Return the configuration filepath
     If verify is True, verify that the file exists and exit with an error if not.
@@ -32,31 +35,36 @@ def get_confpath(verify=True):
             ui.exit(error_code=1)
     return confpath
 
+
 def check_conf(conf):
     """Type check a configuration"""
     validator = validate.Validator()
     results   = conf.validate(validator, copy=True)
     assert results == True, '{}'.format(results) # TODO: precise error dialog when parsing error
 
+
 def load_conf(check=True, path=None):
     """Load the configuration"""
     if path is None:
         path = get_confpath(verify=True)
     with open(path, 'rb') as f:
         conf = configobj.ConfigObj(f.readlines(), configspec=configspec)
-
     if check:
         check_conf(conf)
-
+    conf.filename = path
     return conf
 
+
 def save_conf(conf, path=None):
     """Save the configuration."""
-    if path is None:
+    if path is not None:
-        path = get_confpath(verify=False)
+        conf.filename = path
-    with open(path, 'wb') as f:
+    elif conf.filename is None:
+        conf.filename = get_confpath(verify=False)
+    with open(conf.filename, 'wb') as f:
         conf.write(outfile=f)
 
+
 def default_open_cmd():
     """Chooses the default command to open documents"""
     if platform.system() == 'Darwin':
@@ -68,6 +76,7 @@ def default_open_cmd():
     else:
         return None
 
+
 def which(cmd):
     try:
         return shutil.which(cmd) # available in python 3.3
@@ -78,6 +87,7 @@ def which(cmd):
                 return filepath
         return None
 
+
 def default_edit_cmd():
     """Find an available editor"""
     if 'EDITOR' in os.environ:

pubs/pubs_cmd.py

@@ -1,14 +1,12 @@
 import sys
-
 import argparse
 import collections
-
 from . import uis
 from . import config
 from . import commands
 from . import update
 from . import plugins
-
+from .__init__ import __version__
 
 CORE_CMDS = collections.OrderedDict([
     ('init', commands.init_cmd),
@@ -29,29 +27,42 @@ CORE_CMDS = collections.OrderedDict([
 
     ('websearch', commands.websearch_cmd),
     ('edit', commands.edit_cmd),
-        ])
+])
 
 
 def execute(raw_args=sys.argv):
+
+    conf_parser = argparse.ArgumentParser(add_help=False)
+    conf_parser.add_argument("-c", "--config", help="path to config file",
+                             type=str, metavar="FILE")
+    args, remaining_args = conf_parser.parse_known_args(raw_args[1:])
+
+    if args.config:
+        conf_path = args.config
+    else:
+        conf_path = config.get_confpath(verify=False)  # will be checked on load
+
     # loading config
-    if len(raw_args) > 1 and raw_args[1] != 'init':
+    if len(remaining_args) > 0 and remaining_args[0] != 'init':
         try:
-            conf = config.load_conf(check=False)
+            conf = config.load_conf(path=conf_path, check=False)
-            if update.update_check(conf): # an update happened, reload conf.
+            if update.update_check(conf, path=conf.filename):  # an update happened, reload conf.
-                conf = config.load_conf(check=False)
+                conf = config.load_conf(path=conf_path, check=False)
             config.check_conf(conf)
         except IOError as e:
             print('error: {}'.format(str(e)))
             sys.exit()
     else:
         conf = config.load_default_conf()
+        conf.filename = conf_path
 
     uis.init_ui(conf)
     ui = uis.get_ui()
 
-    parser = argparse.ArgumentParser(description="research papers repository")
+    parser = argparse.ArgumentParser(parents=[conf_parser],
+                                     description="research papers repository",
+                                     prog="pubs", version=__version__, add_help=True)
     subparsers = parser.add_subparsers(title="valid commands", dest="command")
-
     cmd_funcs = collections.OrderedDict()
     for cmd_name, cmd_mod in CORE_CMDS.items():
         cmd_mod.parser(subparsers)
@@ -62,7 +73,7 @@ def execute(raw_args=sys.argv):
     for p in plugins.get_plugins().values():
         cmd_funcs.update(p.get_commands(subparsers))
 
-    args = parser.parse_args(raw_args[1:])
+    args = parser.parse_args(remaining_args)
     args.prog = parser.prog  # Hack: there might be a better way...
     cmd = args.command
     del args.command

pubs/uis.py

@@ -6,6 +6,7 @@ import codecs
 
 from .content import editor_input
 from . import color
+from . import config
 from .p3 import _get_raw_stdout, _get_raw_stderr, input, ustr
 
 
@@ -30,7 +31,7 @@ def _get_encoding(conf):
 
 def get_ui():
     if _ui is None:
-        return PrintUI() # no editor support. (#FIXME?)
+        return PrintUI(config.load_default_conf()) # no editor support. (#FIXME?)
     return _ui
 
 

tests/test_usecase.py

@@ -59,6 +59,7 @@ class CommandTestCase(unittest.TestCase):
     def setUp(self):
         self.fs = fake_env.create_fake_fs([content, filebroker, conf, init_cmd, import_cmd, configobj, update])
         self.default_pubs_dir = self.fs['os'].path.expanduser('~/.pubs')
+        self.default_conf_path = self.fs['os'].path.expanduser('~/.pubsrc')
 
     def execute_cmds(self, cmds, capture_output=CAPTURE_OUTPUT):
         """ Execute a list of commands, and capture their output
@@ -509,8 +510,21 @@ class TestUsecase(DataCommandTestCase):
                 'pubs attach --move Page99 data/pagerank.pdf'
                ]
         self.execute_cmds(cmds)
+        self.assertTrue(self.fs['os'].path.isfile(self.default_conf_path))
         self.assertFalse(self.fs['os'].path.exists('/data/pagerank.pdf'))
 
+    def test_alternate_config(self):
+        alt_conf = self.fs['os'].path.expanduser('~/.alt_conf')
+        cmds = ['pubs -c ' + alt_conf + ' init',
+                'pubs --config ' + alt_conf + ' import data/ Page99',
+                'pubs list -c ' + alt_conf
+               ]
+        outs = self.execute_cmds(cmds)
+        # check if pubs works as expected
+        self.assertEqual(1 + 1, len(outs[-1].split('\n')))
+        # check whether we actually changed the config file
+        self.assertFalse(self.fs['os'].path.isfile(self.default_conf_path))
+        self.assertTrue(self.fs['os'].path.isfile(alt_conf))
 
 if __name__ == '__main__':
     unittest.main()