Add a command to open urls

pubs/commands/__init__.py

@@ -15,5 +15,6 @@ from . import export_cmd
 from . import import_cmd
 # bonus
 from . import websearch_cmd
+from . import url_cmd
 
 from . import edit_cmd

pubs/commands/url_cmd.py

@@ -0,0 +1,35 @@
+from __future__ import unicode_literals
+
+import webbrowser
+
+from .. import p3
+from .. import repo
+from ..uis import get_ui
+from ..utils import resolve_citekey, resolve_citekey_list
+
+
+
+def parser(subparsers, conf):
+    parser = subparsers.add_parser('url',
+                                   help="open the url in the browser")
+    parser.add_argument("citekey", nargs = '*',
+                        help="one or more citeKeys to open")
+    return parser
+
+
+def command(conf, args):
+    """Open the url for a publication."""
+
+    ui = get_ui()
+    rp = repo.Repository(conf)
+
+    for key in resolve_citekey_list(rp, args.citekey, ui=ui, exit_on_fail=True):
+        try:
+            paper = rp.pull_paper(key)
+            url = paper.bibdata['url']
+            webbrowser.open(url)
+
+        except KeyError as e:
+            ui.error(key, 'has no url')
+
+    rp.close()

pubs/pubs_cmd.py

@@ -29,6 +29,7 @@ CORE_CMDS = collections.OrderedDict([
     ('import', commands.import_cmd),
 
     ('websearch', commands.websearch_cmd),
+    ('url', commands.url_cmd),
     ('edit', commands.edit_cmd),
 ])