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#! /usr/bin/env python
# Copyright 2020 Google LLC.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
'''
get_examples.py: Populate docs/examples/ from the list of named fiddles.
'''
import os
import re
import sys
if sys.version_info[0] < 3:
from urllib2 import urlopen
from HTMLParser import HTMLParser
def unescape(v): return HTMLParser().unescape(v)
else:
from urllib.request import urlopen
from html.parser import HTMLParser
from html import unescape
def cxx_bool(v): return 'true' if v else 'false'
assert os.pardir == '..' and '/' in [os.sep, os.altsep]
def parse_fiddle_sk(x):
class FiddleSk(HTMLParser):
def __init__(self):
HTMLParser.__init__(self)
self.attrs = {}
def handle_starttag(self, tag, attrs):
if tag == 'fiddle-sk':
self.attrs = dict(attrs)
fiddle = FiddleSk()
fiddle.feed(x)
return fiddle.attrs
def process_fiddle(name):
if name == 'MAD_Magazine_Oct_1985':
return
filename = 'docs/examples/%s.cpp' % name
if os.path.exists(filename):
return
url = 'https://fiddle.skia.org/c/@' + name
content = urlopen(url).read()
regex = (r'(<fiddle-sk\s[^>]*>)\s*<textarea-numbers-sk>\s*'
r'<textarea [^>]*>(.*)</textarea>')
match = re.search(regex, content.decode('utf-8'), flags=re.S)
if not match:
sys.stderr.write('error: %s\n' % url)
keys = parse_fiddle_sk(match.group(1))
code = unescape(match.group(2))
width = keys.get('width', '256')
height = keys.get('height', '256')
source_image = keys.get('source', 256)
duration = keys.get('duration', '0')
textonly = 'textonly' in keys
srgb = not textonly and 'srgb' in keys
f16 = srgb and 'f16' in keys
offscreen = 'offscreen' in keys
sys.stdout.write('Writing to: %s\n' % filename)
sys.stdout.flush()
with open(filename, 'w') as o:
o.write('// Copyright 2020 Google LLC.\n'
'// Use of this source code is governed by a BSD-style'
' license that can be found in the LICENSE file.\n'
'#include "tools/fiddle/examples.h"\n')
if offscreen:
o.write('REGISTER_FIDDLE(')
o.write(', '.join([name,
width,
height,
cxx_bool(textonly),
source_image,
duration,
cxx_bool(srgb),
cxx_bool(f16),
cxx_bool(offscreen),
keys.get('offscreen_width', '64'),
keys.get('offscreen_height', '64'),
keys.get('offscreen_sample_count', '0'),
keys.get('offscreen_texturable', 'false'),
keys.get('offscreen_mipmap', 'false')]))
elif srgb:
o.write('REG_FIDDLE_SRGB(')
o.write(', '.join([name, width, height, cxx_bool(textonly),
source_image, duration, cxx_bool(f16)]))
elif duration:
o.write('REG_FIDDLE_ANIMATED(')
o.write(', '.join([name, width, height, cxx_bool(textonly),
source_image, duration]))
else:
o.write('REG_FIDDLE(')
o.write(', '.join([name, width, height, cxx_bool(textonly),
source_image]))
o.write(') {\n')
o.write(code)
o.write('\n} // END FIDDLE\n')
def main():
os.chdir(os.path.dirname(__file__) + '/../..')
for line in urlopen('https://fiddle.skia.org/named/'):
line_match = re.search(r'/c/@([A-Za-z0-9_-]*)', line.decode('utf-8'))
if not line_match:
continue
name = line_match.group(1)
process_fiddle(name)
if __name__ == '__main__':
main()