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# Copyright (c) 2011 Martin Vilcans
# Licensed under the MIT license:
# http://www.opensource.org/licenses/mit-license.php
from __future__ import with_statement
import sys
import re
import cgi
import os
import os.path
from screenplain.types import *
from screenplain.richstring import plain
class tag(object):
"""Handler for automatically opening and closing a tag.
E.g.
>>> import sys
>>> from __future__ import with_statement
>>> with tag(sys.stdout, 'div'):
... sys.stdout.write('hello')
...
<div>hello</div>
Adding classes to the element is possible:
>>> with tag(sys.stdout, 'div', classes=['action']):
... sys.stdout.write('hello')
<div class="action">hello</div>
>>> with tag(sys.stdout, 'div', classes=['action', 'centered']):
... sys.stdout.write('hello')
<div class="action centered">hello</div>
"""
def __init__(self, out, tag, classes=None):
self.out = out
self.tag = tag
self.classes = classes
def __enter__(self):
if self.classes:
self.out.write('<%s class="%s">' % (
self.tag,
' '.join(self.classes)
))
else:
self.out.write('<%s>' % self.tag)
def __exit__(self, exception_type, value, traceback):
if not exception_type:
self.out.write('</%s>' % self.tag)
return False
def to_html(text):
html = text.to_html()
if html == '':
return ' '
return re.sub(' ', ' ', html)
class Formatter(object):
"""Class for converting paragraphs into HTML."""
def __init__(self, out):
"""Initializes the formatter.
`out` is a file-like object to write to.
After initializing, call the convert function to convert
any number of paragraphs.
"""
self.out = out
self._format_functions = {
Slug: self.format_slug,
Action: self.format_action,
Dialog: self.format_dialog,
DualDialog: self.format_dual,
Transition: self.format_transition,
Section: self.format_section,
PageBreak: self.format_page_break,
}
def convert(self, screenplay):
"""Converts a number of paragraphs into HTML and writes
it to the output stream.
`screenplay` is a sequence of paragraphs.
"""
self.page_break_before_next = False
for para in screenplay:
format_function = self._format_functions.get(type(para), None)
if format_function:
format_function(para)
self.out.write('\n')
def format_dialog(self, dialog):
with self._tag('div', classes=['dialog']):
self._write_dialog_block(dialog)
def format_dual(self, dual):
with self._tag('div', classes=['dual']):
with self._tag('div', classes=['left']):
self._write_dialog_block(dual.left)
with self._tag('div', classes=['right']):
self._write_dialog_block(dual.right)
self.out.write('<br />')
def _write_dialog_block(self, dialog):
with self._tag('p', classes=['character']):
self.out.write(to_html(dialog.character))
for parenthetical, text in dialog.blocks:
classes = 'parenthetical' if parenthetical else None
with self._tag('p', classes=classes):
self.out.write(to_html(text))
def format_slug(self, slug):
num = slug.scene_number
with self._tag('h6'):
if num:
with self._tag('span', classes=['scnuml']):
self.out.write(to_html(slug.scene_number))
self.out.write(to_html(slug.line))
if num:
with self._tag('span', classes=['scnumr']):
self.out.write(to_html(slug.scene_number))
if slug.synopsis:
with self._tag('span', classes=['h6-synopsis']):
self.out.write(to_html(plain(slug.synopsis)))
def format_section(self, section):
with self._tag('h%d' % section.level):
self.out.write(to_html(section.text))
if section.synopsis:
with self._tag('span', classes=['h%d-synopsis' % section.level]):
self.out.write(to_html(plain(section.synopsis)))
def format_action(self, para):
classes = ['action']
if para.centered:
classes.append('centered')
with self._tag('div', classes=classes):
with self._tag('p'):
for number, line in enumerate(para.lines):
if number != 0:
self.out.write('<br/>')
self.out.write(to_html(line))
def format_transition(self, para):
with self._tag('div', classes=['transition']):
self.out.write(to_html(para.line))
def format_page_break(self, para):
self.page_break_before_next = True
def _tag(self, tag_name, classes=[]):
if self.page_break_before_next:
self.page_break_before_next = False
classes = set(classes).union(('page-break',))
return tag(self.out, tag_name, classes)
def _read_file(filename):
path = os.path.join(os.path.dirname(__file__), filename)
with open(path) as stream:
return stream.read()
def convert(screenplay, out, bare=False):
"""Convert the screenplay into HTML, written to the file-like object `out`.
The output will be a complete HTML document unless `bare` is true.
"""
if bare:
convert_bare(screenplay, out)
else:
convert_full(screenplay, out)
def convert_full(screenplay, out):
"""Convert the screenplay into a complete HTML document,
written to the file-like object `out`.
"""
css = _read_file('default.css')
out.write(
'<!DOCTYPE html>\n'
'<html>'
'<head>'
'<title>Screenplay</title>'
'<style type="text/css">'
)
out.write(css)
out.write(
'</style>'
'</head>'
'<body>'
'<div id="wrapper" class="screenplay">\n'
)
convert_bare(screenplay, out)
out.write(
'</div>'
'</body>'
'</html>\n'
)
def convert_bare(screenplay, out):
"""Convert the screenplay into HTML, written to the file-like object `out`.
Does not create a complete HTML document, as it doesn't include
<html>, <body>, etc.
"""
formatter = Formatter(out)
formatter.convert(screenplay)
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