Use pager for help browser (fixes #294)

sebastinas · sebastinas · commit 2afccdd11cc8 · 2015-01-11T07:58:23.000+01:00
Signed-off-by: Sebastian Ramacher &lt;sebastian+dev@ramacher.at&gt;
diff --git a/bpython/curtsies.py b/bpython/curtsies.py
@@ -105,6 +105,18 @@ def after_suspend():
                       after_suspend=after_suspend) as repl:
                 repl.height, repl.width = window.t.height, window.t.width
 
+                if interactive:
+                    # Add custom help command
+                    # TODO: add methods to run the code
+                    repl.coderunner.interp.locals['_repl'] = repl
+
+                    repl.coderunner.interp.runsource(
+                        'from bpython.curtsiesfrontend._internal import _Helper')
+                    repl.coderunner.interp.runsource('help = _Helper(_repl)\n')
+
+                    del repl.coderunner.interp.locals['_repl']
+                    del repl.coderunner.interp.locals['_Helper']
+
                 def process_event(e):
                     """If None is passed in, just paint the screen"""
                     try:
diff --git a/bpython/curtsiesfrontend/_internal.py b/bpython/curtsiesfrontend/_internal.py
@@ -0,0 +1,39 @@
+# The MIT License
+#
+# Copyright (c) 2015 the bpython authors.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+import sys
+import pydoc
+
+import bpython._internal
+
+class _Helper(bpython._internal._Helper):
+
+    def __init__(self, repl=None):
+        self._repl = repl
+        pydoc.pager = self.pager
+
+        super(_Helper, self).__init__()
+
+    def pager(self, output):
+        self._repl.pager(output)
+
+# vim: sw=4 ts=4 sts=4 ai et
