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marseymoji/generate_emoji_html.py

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#!/usr/bin/python
#
# Copyright 2016 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Build an html page showing emoji images.
This takes a list of directories containing emoji image files, and
builds an html page presenting the images along with their composition
(for sequences) and unicode names (for individual emoji)."""
import argparse
import codecs
import collections
import glob
import os
from os import path
import re
import shutil
import sys
from nototools import tool_utils
from nototools import unicode_data
_default_dir = 'png/128'
_default_ext = 'png'
_default_prefix = 'emoji_u'
_default_title = 'Emoji List'
# DirInfo represents information about a directory of file names.
# - directory is the directory path
# - title is the title to use for this directory
# - filemap is a dict mapping from a tuple of codepoints to the name of
# a file in the directory.
DirInfo = collections.namedtuple('DirInfo', 'directory, title, filemap')
def _merge_keys(dicts):
"""Return the union of the keys in the list of dicts."""
keys = []
for d in dicts:
keys.extend(d.keys())
return frozenset(keys)
def _generate_row_cells(key, font, dir_infos, basepaths, colors):
CELL_PREFIX = '<td>'
indices = range(len(basepaths))
def _cell(info, basepath):
if key in info.filemap:
return '<img src="%s">' % path.join(basepath, info.filemap[key])
return '-missing-'
def _text_cell(text_dir):
text = ''.join(unichr(cp) for cp in key)
return '<span class="efont" dir="%s">%s</span>' % (text_dir, text)
if font:
row_cells = [
CELL_PREFIX + _text_cell(text_dir)
for text_dir in ('ltr', 'rtl')]
else:
row_cells = []
row_cells.extend(
[CELL_PREFIX + _cell(dir_infos[i], basepaths[i])
for i in indices])
if len(colors) > 1:
ix = indices[-1]
extension = CELL_PREFIX + _cell(dir_infos[ix], basepaths[ix])
row_cells.extend([extension] * (len(colors) - 1))
return row_cells
def _get_desc(key_tuple, dir_infos, basepaths):
CELL_PREFIX = '<td>'
def _get_filepath(cp):
cp_key = tuple([cp])
for i in range(len(dir_infos)):
info = dir_infos[i]
if cp_key in info.filemap:
basepath = basepaths[i]
return path.join(basepath, info.filemap[cp_key])
return None
def _get_part(cp):
if cp == 0x200d: # zwj, common so replace with '+'
return '+'
if unicode_data.is_regional_indicator(cp):
return unicode_data.regional_indicator_to_ascii(cp)
if unicode_data.is_tag(cp):
return unicode_data.tag_character_to_ascii(cp)
fname = _get_filepath(cp)
if fname:
return '<img src="%s">' % fname
raise Exception()
if len(key_tuple) == 1:
desc = '%04x' % key_tuple
else:
desc = ' '.join('%04x' % cp for cp in key_tuple)
if len(unicode_data.strip_emoji_vs(key_tuple)) > 1:
try:
desc += ' (%s)' % ''.join(
_get_part(cp) for cp in key_tuple if cp != 0xfe0f)
except:
pass
return CELL_PREFIX + desc
def _get_name(key_tuple, annotations):
annotation = None if annotations is None else annotations.get(key_tuple)
CELL_PREFIX = '<td%s>' % (
'' if annotation is None else ' class="%s"' % annotation)
seq_name = unicode_data.get_emoji_sequence_name(key_tuple)
if seq_name == None:
if key_tuple == (0x20e3,):
seq_name = '(combining enlosing keycap)'
elif key_tuple == (0xfe82b,):
seq_name = '(unknown flag PUA codepoint)'
else:
print 'no name for %s' % unicode_data.seq_to_string(key_tuple)
seq_name = '(oops)'
return CELL_PREFIX + seq_name
def _collect_aux_info(dir_infos, keys):
"""Returns a map from dir_info_index to a set of keys of additional images
that we will take from the directory at that index."""
target_key_to_info_index = {}
for key in keys:
if len(key) == 1:
continue
for cp in key:
target_key = tuple([cp])
if target_key in keys or target_key in target_key_to_info_index:
continue
for i, info in enumerate(dir_infos):
if target_key in info.filemap:
target_key_to_info_index[target_key] = i
break
if target_key not in target_key_to_info_index:
# we shouldn't try to use it in the description. maybe report this?
pass
# now we need to invert the map
aux_info = collections.defaultdict(set)
for key, index in target_key_to_info_index.iteritems():
aux_info[index].add(key)
return aux_info
def _generate_content(
basedir, font, dir_infos, keys, annotations, standalone, colors):
"""Generate an html table for the infos. Basedir is the parent directory of
the content, filenames will be made relative to this if underneath it, else
absolute. If font is not none, generate columns for the text rendered in the
font before other columns. Dir_infos is the list of DirInfos in column
order. Keys is the list of canonical emoji sequences in row order. If
annotations is not none, highlight sequences that appear in this map based on
their map values ('ok', 'error', 'warning'). If standalone is true, the
image data and font (if used) will be copied under the basedir to make a
completely stand-alone page. Colors is the list of background colors, the
last DirInfo column will be repeated against each of these backgrounds.
"""
basedir = path.abspath(path.expanduser(basedir))
if not path.isdir(basedir):
os.makedirs(basedir)
basepaths = []
if standalone:
# auxiliary images are used in the decomposition of multi-part emoji but
# aren't part of main set. e.g. if we have female basketball player
# color-3 we want female, basketball player, and color-3 images available
# even if they aren't part of the target set.
aux_info = _collect_aux_info(dir_infos, keys)
# create image subdirectories in target dir, copy image files to them,
# and adjust paths
for i, info in enumerate(dir_infos):
subdir = '%02d' % i
dstdir = path.join(basedir, subdir)
if not path.isdir(dstdir):
os.mkdir(dstdir)
copy_keys = set(keys) | aux_info[i]
srcdir = info.directory
filemap = info.filemap
for key in copy_keys:
if key in filemap:
filename = filemap[key]
srcfile = path.join(srcdir, filename)
dstfile = path.join(dstdir, filename)
shutil.copy2(srcfile, dstfile)
basepaths.append(subdir)
else:
for srcdir, _, _ in dir_infos:
abs_srcdir = path.abspath(path.expanduser(srcdir))
if abs_srcdir == basedir:
dirspec = ''
elif abs_srcdir.startswith(basedir):
dirspec = abs_srcdir[len(basedir) + 1:]
else:
dirspec = abs_srcdir
basepaths.append(dirspec)
lines = ['<table>']
header_row = ['']
if font:
header_row.extend(['Emoji ltr', 'Emoji rtl'])
header_row.extend([info.title for info in dir_infos])
if len(colors) > 1:
header_row.extend([dir_infos[-1].title] * (len(colors) - 1))
header_row.extend(['Sequence', 'Name'])
lines.append('<th>'.join(header_row))
for key in keys:
row = _generate_row_cells(key, font, dir_infos, basepaths, colors)
row.append(_get_desc(key, dir_infos, basepaths))
row.append(_get_name(key, annotations))
lines.append(''.join(row))
return '\n <tr>'.join(lines) + '\n</table>'
def _get_image_data(image_dir, ext, prefix):
"""Return a map from a canonical tuple of cp sequences to a filename.
This filters by file extension, and expects the rest of the files
to match the prefix followed by a sequence of hex codepoints separated
by underscore. Files that don't match, duplicate sequences (because
of casing), and out_of_range or empty codepoints raise an error."""
fails = []
result = {}
expect_re = re.compile(r'%s([0-9A-Fa-f_]+).%s' % (prefix, ext))
for f in sorted(glob.glob(path.join(image_dir, '*.%s' % ext))):
filename = path.basename(f)
m = expect_re.match(filename)
if not m:
if filename.startswith('unknown_flag.') or filename.startswith('p4p_'):
continue
fails.append('"%s" did not match: "%s"' % (expect_re.pattern, filename))
continue
seq = m.group(1)
this_failed = False
try:
cps = tuple(int(s, 16) for s in seq.split('_'))
for cp in cps:
if (cp > 0x10ffff):
fails.append('cp out of range: ' + filename)
this_failed = True
break
if this_failed:
continue
canonical_cps = unicode_data.get_canonical_emoji_sequence(cps)
if canonical_cps:
# if it is unrecognized, just leave it alone, else replace with
# canonical sequence.
cps = canonical_cps
except:
fails.append('bad cp sequence: ' + filename)
continue
if cps in result:
fails.append('duplicate sequence: %s and %s' (result[cps], filename))
continue
result[cps] = filename
if fails:
print >> sys.stderr, 'get_image_data failed (%s, %s, %s):\n %s' % (
image_dir, ext, prefix, '\n '.join(fails))
raise ValueError('get image data failed')
return result
def _get_dir_infos(
image_dirs, exts=None, prefixes=None, titles=None,
default_ext=_default_ext, default_prefix=_default_prefix):
"""Return a list of DirInfos for the image_dirs. When defined,
exts, prefixes, and titles should be the same length as image_dirs.
Titles default to using the last segments of the image_dirs,
exts and prefixes default to the corresponding default values."""
count = len(image_dirs)
if not titles:
titles = [None] * count
elif len(titles) != count:
raise ValueError('have %d image dirs but %d titles' % (
count, len(titles)))
if not exts:
exts = [default_ext] * count
elif len(exts) != count:
raise ValueError('have %d image dirs but %d extensions' % (
count, len(exts)))
if not prefixes:
prefixes = [default_prefix] * count
elif len(prefixes) != count:
raise ValueError('have %d image dirs but %d prefixes' % (
count, len(prefixes)))
infos = []
for i in range(count):
image_dir = image_dirs[i]
title = titles[i] or path.basename(path.abspath(image_dir))
ext = exts[i] or default_ext
prefix = prefixes[i] or default_prefix
filemap = _get_image_data(image_dir, ext, prefix)
infos.append(DirInfo(image_dir, title, filemap))
return infos
def _get_keys(dir_infos, limit, all_emoji, emoji_sort):
"""Return a list of the key tuples to display. If all_emoji is
True, returns all emoji sequences, else the sequences available
in dir_infos (limited to the first dir_info if limit is True).
The result is in emoji order if emoji_sort is true, else in
unicode codepoint order."""
if all_emoji:
keys = unicode_data.get_emoji_sequences()
elif len(dir_infos) == 1 or limit:
keys = frozenset(dir_infos[0].filemap.keys())
else:
keys = _merge_keys([info.filemap for info in dir_infos])
if emoji_sort:
sorted_keys = unicode_data.get_sorted_emoji_sequences(keys)
else:
sorted_keys = sorted(keys)
return sorted_keys
def _parse_annotation_file(afile):
"""Parse file and return a map from sequences to one of 'ok', 'warning',
or 'error'.
The file format consists of two kinds of lines. One defines the annotation
to apply, it consists of the text 'annotation:' followed by one of 'ok',
'warning', or 'error'. The other defines a sequence that should get the most
recently defined annotation, this is a series of codepoints expressed in hex
separated by spaces. The initial default annotation is 'error'. '#' starts
a comment to end of line, blank lines are ignored.
"""
annotations = {}
line_re = re.compile(r'annotation:\s*(ok|warning|error)|([0-9a-f ]+)')
annotation = 'error'
with open(afile, 'r') as f:
for line in f:
line = line.strip()
if not line or line[0] == '#':
continue
m = line_re.match(line)
if not m:
raise Exception('could not parse annotation "%s"' % line)
new_annotation = m.group(1)
if new_annotation:
annotation = new_annotation
else:
seq = tuple([int(s, 16) for s in m.group(2).split()])
canonical_seq = unicode_data.get_canonical_emoji_sequence(seq)
if canonical_seq:
seq = canonical_seq
if seq in annotations:
raise Exception(
'duplicate sequence %s in annotations' %
unicode_data.seq_to_string(seq))
annotations[seq] = annotation
return annotations
def _instantiate_template(template, arg_dict):
id_regex = re.compile('{{([a-zA-Z0-9_]+)}}')
ids = set(m.group(1) for m in id_regex.finditer(template))
keyset = set(arg_dict.keys())
missing_ids = ids - keyset
extra_args = keyset - ids
if extra_args:
print >> sys.stderr, (
'the following %d args are unused:\n%s' %
(len(extra_args), ', '.join(sorted(extra_args))))
text = template
if missing_ids:
raise ValueError(
'the following %d ids in the template have no args:\n%s' %
(len(missing_ids), ', '.join(sorted(missing_ids))))
for arg in ids:
text = re.sub('{{%s}}' % arg, arg_dict[arg], text)
return text
TEMPLATE = """<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>{{title}}</title>{{fontFaceStyle}}
<style>{{style}}</style>
</head>
<body>
{{content}}
</body>
</html>
"""
STYLE = """
tbody { background-color: rgb(110, 110, 110) }
th { background-color: rgb(210, 210, 210) }
td img { width: 64px; height: 64px }
td:nth-last-of-type(2) {
font-size: 18pt; font-weight: regular; background-color: rgb(210, 210, 210)
}
td:nth-last-of-type(2) img {
vertical-align: bottom; width: 32px; height: 32px
}
td:last-of-type { background-color: white }
td.error { background-color: rgb(250, 65, 75) }
td.warning { background-color: rgb(240, 245, 50) }
td.ok { background-color: rgb(10, 200, 60) }
"""
def write_html_page(
filename, page_title, font, dir_infos, keys, annotations, standalone,
colors):
out_dir = path.dirname(filename)
if font:
if standalone:
# the assumption with standalone is that the source data and
# output directory don't overlap, this should probably be checked...
rel_fontpath = path.join('font', path.basename(font))
new_font = path.join(out_dir, rel_fontpath)
tool_utils.ensure_dir_exists(path.dirname(new_font))
shutil.copy2(font, new_font)
font = rel_fontpath
else:
common_prefix, (rel_dir, rel_font) = tool_utils.commonpathprefix(
[out_dir, font])
if rel_dir == '':
# font is in a subdirectory of the target, so just use the relative
# path
font = rel_font
else:
# use the absolute path
font = path.normpath(path.join(common_prefix, rel_font))
content = _generate_content(
path.dirname(filename), font, dir_infos, keys, annotations, standalone,
colors)
N_STYLE = STYLE
if font:
FONT_FACE_STYLE = """
<style>@font-face {
font-family: "Emoji"; src: url("%s");
}</style>""" % font
N_STYLE += ' span.efont { font-family: "Emoji"; font-size:32pt }\n'
else:
FONT_FACE_STYLE = ''
num_final_cols = len(colors)
col_colors = ['']
for i, color in enumerate(colors):
col_colors.append(
"""td:nth-last-of-type(%d) { background-color: #%s }\n""" % (
2 + num_final_cols - i, color))
N_STYLE += ' '.join(col_colors)
text = _instantiate_template(
TEMPLATE, {
'title': page_title, 'fontFaceStyle': FONT_FACE_STYLE,
'style': N_STYLE, 'content': content})
with codecs.open(filename, 'w', 'utf-8') as f:
f.write(text)
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
'-o', '--outfile', help='path to output file', metavar='file',
required=True)
parser.add_argument(
'--page_title', help='page title', metavar='title', default='Emoji Table')
parser.add_argument(
'-d', '--image_dirs', help='image directories', metavar='dir',
nargs='+')
parser.add_argument(
'-e', '--exts', help='file extension, one per image dir', metavar='ext',
nargs='*')
parser.add_argument(
'-p', '--prefixes', help='file name prefix, one per image dir',
metavar='prefix', nargs='*')
parser.add_argument(
'-t', '--titles', help='title, one per image dir', metavar='title',
nargs='*'),
parser.add_argument(
'-l', '--limit', help='limit to only sequences supported by first set',
action='store_true')
parser.add_argument(
'-de', '--default_ext', help='default extension', metavar='ext',
default=_default_ext)
parser.add_argument(
'-dp', '--default_prefix', help='default prefix', metavar='prefix',
default=_default_prefix)
parser.add_argument(
'-f', '--font', help='emoji font', metavar='font')
parser.add_argument(
'-a', '--annotate', help='file listing sequences to annotate',
metavar='file')
parser.add_argument(
'-s', '--standalone', help='copy resources used by html under target dir',
action='store_true')
parser.add_argument(
'-c', '--colors', help='list of colors for background', nargs='*',
metavar='hex')
parser.add_argument(
'--all_emoji', help='use all emoji sequences', action='store_true')
parser.add_argument(
'--emoji_sort', help='use emoji sort order', action='store_true')
args = parser.parse_args()
file_parts = path.splitext(args.outfile)
if file_parts[1] != '.html':
args.outfile = file_parts[0] + '.html'
print 'added .html extension to filename:\n%s' % args.outfile
if args.annotate:
annotations = _parse_annotation_file(args.annotate)
else:
annotations = None
if args.colors == None:
args.colors = ['6e6e6e']
elif not args.colors:
args.colors = """eceff1 f5f5f5 e4e7e9 d9dbdd 080808 263238 21272b 3c474c
4db6ac 80cbc4 5e35b1""".split()
dir_infos = _get_dir_infos(
args.image_dirs, args.exts, args.prefixes, args.titles,
args.default_ext, args.default_prefix)
keys = _get_keys(
dir_infos, args.limit, args.all_emoji, args.emoji_sort)
write_html_page(
args.outfile, args.page_title, args.font, dir_infos, keys,
annotations, args.standalone, args.colors)
if __name__ == "__main__":
main()
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