upstream/ipython Files · IPython/utils/ulinecache.py

go to appropriate line when coming from another cell...

go to appropriate line when coming from another cell Sets the cursor on the last line of the cell when moved up from the top of the cell below, and sets the cursors to the first line when moving down from the bottom of a last line. Here, we retain the character that the cursor was on, so that users wishing to have up-down functionality like one document can still use this shortcut handler and simple adjust the at_top and at_bottom methods

Thomas Kluyver - - Load All Authors

File last commit:

r13353:0ca701d5


                r15834:869e697c

Download file

             ulinecache.py
        
                    45 lines
            
             | 1.6 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / IPython / utils / ulinecache.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      """Wrapper around linecache which decodes files to unicode according to PEP 263.

      This is only needed for Python 2 - linecache in Python 3 does the same thing

      itself.

      """

      import functools

      import linecache

      import sys

      from IPython.utils import py3compat

      from IPython.utils import openpy

      if py3compat.PY3:

          getline = linecache.getline

          # getlines has to be looked up at runtime, because doctests monkeypatch it.

          @functools.wraps(linecache.getlines)

          def getlines(filename, module_globals=None):

              return linecache.getlines(filename, module_globals=module_globals)

      else:

          def getlines(filename, module_globals=None):

              """Get the lines (as unicode) for a file from the cache.

              Update the cache if it doesn't contain an entry for this file already."""

              filename = py3compat.cast_bytes(filename, sys.getfilesystemencoding())

              lines = linecache.getlines(filename, module_globals=module_globals)

              # The bits we cache ourselves can be unicode.

              if (not lines) or isinstance(lines[0], py3compat.unicode_type):

                  return lines

              readline = openpy._list_readline(lines)

              try:

                  encoding, _ = openpy.detect_encoding(readline)

              except SyntaxError:

                  encoding = 'ascii'

              return [l.decode(encoding, 'replace') for l in lines]

          # This is a straight copy of linecache.getline

          def getline(filename, lineno, module_globals=None):

              lines = getlines(filename, module_globals)

              if 1 <= lineno <= len(lines):

                  return lines[lineno-1]

              else:

                  return ''

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				"""Wrapper around linecache which decodes files to unicode according to PEP 263.

				This is only needed for Python 2 - linecache in Python 3 does the same thing
				itself.
				"""
				import functools
				import linecache
				import sys

				from IPython.utils import py3compat
				from IPython.utils import openpy

				if py3compat.PY3:
				getline = linecache.getline

				# getlines has to be looked up at runtime, because doctests monkeypatch it.
				@functools.wraps(linecache.getlines)
				def getlines(filename, module_globals=None):
				return linecache.getlines(filename, module_globals=module_globals)

				else:
				def getlines(filename, module_globals=None):
				"""Get the lines (as unicode) for a file from the cache.
				Update the cache if it doesn't contain an entry for this file already."""
				filename = py3compat.cast_bytes(filename, sys.getfilesystemencoding())
				lines = linecache.getlines(filename, module_globals=module_globals)

				# The bits we cache ourselves can be unicode.
				if (not lines) or isinstance(lines[0], py3compat.unicode_type):
				return lines

				readline = openpy._list_readline(lines)
				try:
				encoding, _ = openpy.detect_encoding(readline)
				except SyntaxError:
				encoding = 'ascii'
				return [l.decode(encoding, 'replace') for l in lines]

				# This is a straight copy of linecache.getline
				def getline(filename, lineno, module_globals=None):
				lines = getlines(filename, module_globals)
				if 1 <= lineno <= len(lines):
				return lines[lineno-1]
				else:
				return ''