##// END OF EJS Templates
Reverse hscrollbar min-height hack on OS X...
Reverse hscrollbar min-height hack on OS X OS X has optional behavior to only draw scrollbars during scroll, which causes problems for CodeMirror's scrollbars. CodeMirror's solution is to set a minimum size for their scrollbars, which is always present. The trade is that the container overlays most of the last line, swallowing click events when there is scrolling to do, even when no scrollbar is visible. This reverses the trade, recovering the click events at the expense of never showing the horizontal scrollbar on OS X when this option is enabled.

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nbpy.py
151 lines | 5.2 KiB | text/x-python | PythonLexer
"""Read and write notebooks as regular .py files.
Authors:
* Brian Granger
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import re
from IPython.utils.py3compat import unicode_type
from .rwbase import NotebookReader, NotebookWriter
from .nbbase import new_code_cell, new_text_cell, new_worksheet, new_notebook
#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
_encoding_declaration_re = re.compile(r"^#.*coding[:=]\s*([-\w.]+)")
class PyReaderError(Exception):
pass
class PyReader(NotebookReader):
def reads(self, s, **kwargs):
return self.to_notebook(s,**kwargs)
def to_notebook(self, s, **kwargs):
lines = s.splitlines()
cells = []
cell_lines = []
state = u'codecell'
for line in lines:
if line.startswith(u'# <nbformat>') or _encoding_declaration_re.match(line):
pass
elif line.startswith(u'# <codecell>'):
cell = self.new_cell(state, cell_lines)
if cell is not None:
cells.append(cell)
state = u'codecell'
cell_lines = []
elif line.startswith(u'# <htmlcell>'):
cell = self.new_cell(state, cell_lines)
if cell is not None:
cells.append(cell)
state = u'htmlcell'
cell_lines = []
elif line.startswith(u'# <markdowncell>'):
cell = self.new_cell(state, cell_lines)
if cell is not None:
cells.append(cell)
state = u'markdowncell'
cell_lines = []
else:
cell_lines.append(line)
if cell_lines and state == u'codecell':
cell = self.new_cell(state, cell_lines)
if cell is not None:
cells.append(cell)
ws = new_worksheet(cells=cells)
nb = new_notebook(worksheets=[ws])
return nb
def new_cell(self, state, lines):
if state == u'codecell':
input = u'\n'.join(lines)
input = input.strip(u'\n')
if input:
return new_code_cell(input=input)
elif state == u'htmlcell':
text = self._remove_comments(lines)
if text:
return new_text_cell(u'html',source=text)
elif state == u'markdowncell':
text = self._remove_comments(lines)
if text:
return new_text_cell(u'markdown',source=text)
def _remove_comments(self, lines):
new_lines = []
for line in lines:
if line.startswith(u'#'):
new_lines.append(line[2:])
else:
new_lines.append(line)
text = u'\n'.join(new_lines)
text = text.strip(u'\n')
return text
def split_lines_into_blocks(self, lines):
if len(lines) == 1:
yield lines[0]
raise StopIteration()
import ast
source = '\n'.join(lines)
code = ast.parse(source)
starts = [x.lineno-1 for x in code.body]
for i in range(len(starts)-1):
yield '\n'.join(lines[starts[i]:starts[i+1]]).strip('\n')
yield '\n'.join(lines[starts[-1]:]).strip('\n')
class PyWriter(NotebookWriter):
def writes(self, nb, **kwargs):
lines = [u'# -*- coding: utf-8 -*-']
lines.extend([u'# <nbformat>2</nbformat>',''])
for ws in nb.worksheets:
for cell in ws.cells:
if cell.cell_type == u'code':
input = cell.get(u'input')
if input is not None:
lines.extend([u'# <codecell>',u''])
lines.extend(input.splitlines())
lines.append(u'')
elif cell.cell_type == u'html':
input = cell.get(u'source')
if input is not None:
lines.extend([u'# <htmlcell>',u''])
lines.extend([u'# ' + line for line in input.splitlines()])
lines.append(u'')
elif cell.cell_type == u'markdown':
input = cell.get(u'source')
if input is not None:
lines.extend([u'# <markdowncell>',u''])
lines.extend([u'# ' + line for line in input.splitlines()])
lines.append(u'')
lines.append('')
return unicode_type('\n'.join(lines))
_reader = PyReader()
_writer = PyWriter()
reads = _reader.reads
read = _reader.read
to_notebook = _reader.to_notebook
write = _writer.write
writes = _writer.writes