Merge pull request #200 from michael-lazar/pager

Pager
2016-03-03 22:45:20 -08:00
parent 201ef8e6df 3c446ad881
commit eae2e329f5
12 changed files with 307 additions and 26 deletions
--- a/CONTROLS.rst
+++ b/CONTROLS.rst
@@ -57,5 +57,6 @@ Submission Mode
 In submission mode you can view the self text for a submission and browse comments.

 :``h`` or ``◄``: Return to the subreddit
+:``l`` or ``►``: Open the selected comment in a new window
 :``o`` or ``ENTER``: Open the comment permalink with your web browser
 :``SPACE``: Fold the selected comment, or load additional comments
--- a/README.rst
+++ b/README.rst
@@ -155,6 +155,28 @@ How do I run the repository code directly?
    $ cd ~/rtv_project
    $ python3 -m rtv

+How do I run the tests?
+  This project uses `pytest <http://pytest.org/>`_ and `VCR.py <https://vcrpy.readthedocs.org/>`_.
+
+  .. code-block:: bash
+    
+    $ pip3 install pytest
+    $ # The pip release for VCR.py is out-of-date
+    $ pip3 install git+https://github.com/kevin1024/vcrpy.git
+    $ cd ~/rtv_project
+    $ # Run the full suite
+    $ PYTHONPATH=. py.test
+    $ # or a single test
+    $ PYTHONPATH=. py.test tests/test_config.py::test_copy_default_config
+
+  VCR.py will record HTTP requests made during the test run and store
+  them in *tests/cassettes/*. By default these cassettes are read-only,
+  if you would like to record new cassettes you must provide your own refresh token.
+
+  .. code-block:: bash
+
+     $ PYTHONPATH=. py.test --record-mode=once --refresh-token=~/.config/rtv/refresh-token
+  
 =========
 Changelog
 =========
--- a/rtv/docs.py
+++ b/rtv/docs.py
@@ -17,7 +17,7 @@ Press `?` to open the help screen.
 """

 HELP = """
-Basic Commands
+[Basic Commands]
  `j/k` or `UP/DOWN`  : Move the cursor up/down
  `m/n` or `PgUp/PgDn`: Jump to the previous/next page
  `o` or `ENTER`      : Open the selected item as a webpage
@@ -27,7 +27,7 @@ Basic Commands
  `?`                 : Show the help screen
  `q/Q`               : Quit/Force quit

-Authenticated Commands
+[Authenticated Commands]
  `a/z`               : Upvote/downvote
  `c`                 : Compose a new post or comment
  `e`                 : Edit an existing post or comment
@@ -35,13 +35,14 @@ Authenticated Commands
  `i`                 : Display new messages prompt
  `s`                 : Open/close subscribed subreddits list

-Subreddit Mode
+[Subreddit Mode]
  `l` or `RIGHT`      : Enter the selected submission
  `/`                 : Open a prompt to switch subreddits
  `f`                 : Open a prompt to search the current subreddit

-Submission Mode
+[Submission Mode]
  `h` or `LEFT`       : Return to subreddit mode
+  `l` or `RIGHT`      : Open the selected comment in a new window
  `SPACE`             : Fold the selected comment, or load additional comments
 """

--- a/rtv/page.py
+++ b/rtv/page.py
@@ -79,7 +79,7 @@ class Page(object):

    @PageController.register(Command('HELP'))
    def show_help(self):
-        self.term.show_notification(docs.HELP.strip().splitlines())
+        self.term.show_notification(docs.HELP.strip('\n').splitlines())

    @PageController.register(Command('SORT_HOT'))
    def sort_content_hot(self):
--- a/rtv/rtv.cfg
+++ b/rtv/rtv.cfg
@@ -104,10 +104,11 @@ INBOX = i
 REFRESH = r, <KEY_F5>

 ; Submission page
-SUBMISSION_TOGGLE_COMMENT = l, 0x20, <KEY_RIGHT>
+SUBMISSION_TOGGLE_COMMENT = 0x20
 SUBMISSION_OPEN_IN_BROWSER = o, <LF>, <KEY_ENTER>
 SUBMISSION_POST = c
 SUBMISSION_EXIT = h, <KEY_LEFT>
+SUBMISSION_OPEN_IN_PAGER = l, <KEY_RIGHT>

 ; Subreddit page
 SUBREDDIT_SEARCH = f
--- a/rtv/submission.py
+++ b/rtv/submission.py
@@ -69,6 +69,19 @@ class SubmissionPage(Page):
        else:
            self.term.flash()

+    @SubmissionController.register(Command('SUBMISSION_OPEN_IN_PAGER'))
+    def open_pager(self):
+        "Open the selected item with the system's pager"
+        data = self.content.get(self.nav.absolute_index)
+        if data['type'] == 'Submission':
+            text = '\n\n'.join((data['permalink'], data['text']))
+            self.term.open_pager(text)
+        elif data['type'] == 'Comment':
+            text = '\n\n'.join((data['permalink'], data['body']))
+            self.term.open_pager(text)
+        else:
+            self.term.flash()
+
    @SubmissionController.register(Command('SUBMISSION_POST'))
    @logged_in
    def add_comment(self):
--- a/rtv/terminal.py
+++ b/rtv/terminal.py
@@ -35,6 +35,7 @@ class Terminal(object):
    # ASCII code
    ESCAPE = 27
    RETURN = 10
+    SPACE = 32

    def __init__(self, stdscr, ascii=False):

@@ -356,6 +357,26 @@ class Terminal(object):
            with self.suspend():
                webbrowser.open_new_tab(url)

+    def open_pager(self, data):
+        """
+        View a long block of text using the system's default pager.
+
+        The data string will be piped directly to the pager.
+        """
+
+        pager = os.getenv('PAGER') or 'less'
+        try:
+            with self.suspend():
+                p = subprocess.Popen([pager], stdin=subprocess.PIPE)
+                p.stdin.write(self.clean(data))
+                p.stdin.close()
+                try:
+                    p.wait()
+                except KeyboardInterrupt:
+                    p.terminate()
+        except OSError:
+            self.show_notification('Could not open pager %s' % pager)
+
    def open_editor(self, data=''):
        """
        Open a temporary file using the system's default editor.
@@ -366,16 +387,19 @@ class Terminal(object):
        """

        with NamedTemporaryFile(prefix='rtv-', suffix='.txt', mode='wb') as fp:
-            fp.write(codecs.encode(data, 'utf-8'))
+            fp.write(self.clean(data))
            fp.flush()
            editor = os.getenv('RTV_EDITOR') or os.getenv('EDITOR') or 'nano'

            try:
                with self.suspend():
-                    subprocess.Popen([editor, fp.name]).wait()
+                    p = subprocess.Popen([editor, fp.name])
+                    try:
+                        p.wait()
+                    except KeyboardInterrupt:
+                        p.terminate()
            except OSError:
-                raise exceptions.ProgramError(
-                    'Could not open file with %s' % editor)
+                self.show_notification('Could not open file with %s' % editor)

            # Open a second file object to read. This appears to be necessary
            # in order to read the changes made by some editors (gedit). w+
--- a/scripts/rtv.1.template
+++ b/scripts/rtv.1.template
@@ -25,13 +25,13 @@ for future sessions. You can disable this behavior by setting the option
 .SH ENVIRONMENT
 .TP
 .BR RTV_EDITOR
-Specifies which text editor RTV will attempt to use when editing comments and
-posts. RTV will fallback to \fI$EDITOR\fR if the editor is unspecified.
+Text editor to use when editing comments and submissions. Will fallback to
+\fI$EDITOR\fR. 
 .TP
 .BR BROWSER
-Specifies which webbrowser RTV will attempt to use when opening links.
-This can be set to a terminal browser (w3m, lynx, elinks, etc.) for a true
-terminal experience. RTV will fallback to the system's default browser.
+Web browser to use when opening links.
+.BR PAGER
+Pager to use when expanding individual comments and submissions. 
 .SH AUTHOR
 Michael Lazar <lazar.michael22@gmail.com> (2016).
 .SH BUGS
--- a/tests/cassettes/test_submission_pager.yaml
+++ b/tests/cassettes/test_submission_pager.yaml
@@ -0,0 +1,179 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept: ['*/*']
+      Accept-Encoding: ['gzip, deflate']
+      Connection: [keep-alive]
+      User-Agent: [rtv test suite PRAW/3.3.0 Python/3.4.0 b'Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty']
+    method: GET
+    uri: https://www.reddit.com/r/Python/comments/2xmo63.json
+  response:
+    body:
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--- a/tests/test_page.py
+++ b/tests/test_page.py
@@ -72,7 +72,7 @@ def test_page_unauthenticated(reddit, terminal, config, oauth):

        # Show help
        page.controller.trigger('?')
-        message = 'Basic Commands'.encode('utf-8')
+        message = '[Basic Commands]'.encode('utf-8')
        terminal.stdscr.subwin.addstr.assert_any_call(1, 1, message)

        # Sort content
--- a/tests/test_submission.py
+++ b/tests/test_submission.py
@@ -94,6 +94,23 @@ def test_submission_open(submission_page, terminal):
        assert terminal.open_browser.called


+def test_submission_pager(submission_page, terminal):
+
+    # View a submission with the pager
+    with mock.patch.object(terminal, 'open_pager'):
+        submission_page.controller.trigger('l')
+        assert terminal.open_pager.called
+
+    # Move down to the first comment
+    with mock.patch.object(submission_page, 'clear_input_queue'):
+        submission_page.controller.trigger('j')
+
+    # View a comment with the pager
+    with mock.patch.object(terminal, 'open_pager'):
+        submission_page.controller.trigger('l')
+        assert terminal.open_pager.called
+
+
 def test_submission_vote(submission_page, refresh_token):

    # Log in
--- a/tests/test_terminal.py
+++ b/tests/test_terminal.py
@@ -309,3 +309,26 @@ def test_open_browser(terminal):
    open_new_tab.assert_called_with(url)
    assert curses.endwin.called
    assert curses.doupdate.called
+
+
+def test_open_pager(terminal, stdscr):
+
+    data = "Hello World!"
+
+    def side_effect(args, stdin=None):
+        assert stdin is not None
+        raise OSError
+
+    with mock.patch('subprocess.Popen', autospec=True) as Popen, \
+            mock.patch.dict('os.environ', {'PAGER': 'fake'}):
+        Popen.return_value.stdin = mock.Mock()
+
+        terminal.open_pager(data)
+        assert Popen.called
+        assert not stdscr.addstr.called
+
+        # Raise an OS error
+        Popen.side_effect = side_effect
+        terminal.open_pager(data)
+        message = 'Could not open pager fake'.encode('ascii')
+        assert stdscr.addstr.called_with(0, 0, message)