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zulip/tools/setup/emoji/build_emoji

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#!/usr/bin/env python3
#
# See docs/subsystems/emoji.md for a high-level explanation of how this system
# works.
import os
import sys
import ujson
from typing import Any, Dict, List
from emoji_setup_utils import generate_emoji_catalog, generate_codepoint_to_name_map, \
generate_name_to_codepoint_map, emoji_names_for_picker, EMOJISETS
from emoji_names import EMOJI_NAME_MAPS
ZULIP_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), '../../../')
sys.path.append(ZULIP_PATH)
from scripts.lib.zulip_tools import generate_sha1sum_emoji, run
TARGET_EMOJI_DUMP = os.path.join(ZULIP_PATH, 'static', 'generated', 'emoji')
EMOJI_CACHE_PATH = "/srv/zulip-emoji-cache"
EMOJI_SCRIPT_DIR_PATH = os.path.join(ZULIP_PATH, 'tools', 'setup', 'emoji')
NODE_MODULES_PATH = os.path.join(ZULIP_PATH, 'node_modules')
EMOJI_CODES_FILE_TEMPLATE = """\
var emoji_codes = (function () {
var exports = {};
exports.names = %(names)s;
exports.name_to_codepoint = %(name_to_codepoint)s;
exports.codepoint_to_name = %(codepoint_to_name)s;
exports.emoji_catalog = %(emoji_catalog)s;
return exports;
}());
if (typeof module !== 'undefined') {
module.exports = emoji_codes;
}
"""
SPRITE_CSS_FILE_TEMPLATE = """\
div.emoji,
span.emoji
{
display: inline-block;
background-image: url('sheet_%(emojiset)s_64.png');
-webkit-background-size: 4900%%;
-moz-background-size: 4900%%;
background-size: 4900%%;
background-repeat: no-repeat;
/* Hide the text. */
text-indent: 100%%;
white-space: nowrap;
overflow: hidden;
}
%(emoji_positions)s
"""
EMOJI_POS_INFO_TEMPLATE = """\
.emoji-%(codepoint)s {
background-position: %(pos_x)s%% %(pos_y)s%%;
}
"""
# change directory
os.chdir(EMOJI_SCRIPT_DIR_PATH)
if 'TRAVIS' in os.environ:
# In Travis CI, we don't have root access
EMOJI_CACHE_PATH = "/home/travis/zulip-emoji-cache"
def main():
# type: () -> None
success_stamp = get_success_stamp()
source_emoji_dump = os.path.dirname(success_stamp)
if not os.path.exists(success_stamp):
print("Dumping emojis ...")
dump_emojis(source_emoji_dump)
run(['touch', success_stamp])
print("Using cached emojis from {}".format(source_emoji_dump))
run(['rm', '-rf', TARGET_EMOJI_DUMP])
os.symlink(source_emoji_dump, TARGET_EMOJI_DUMP)
def get_success_stamp():
# type: () -> str
sha1_hexdigest = generate_sha1sum_emoji(ZULIP_PATH)
return os.path.join(EMOJI_CACHE_PATH, sha1_hexdigest, 'emoji', '.success-stamp')
def generate_sprite_css_files(cache_path, emoji_data):
# type: (str, List[Dict[str, Any]]) -> None
# Spritesheet CSS generation code.
emoji_positions = ""
for emoji in emoji_data:
if emoji["has_img_google"]:
emoji_positions += EMOJI_POS_INFO_TEMPLATE % {
'codepoint': emoji['unified'].lower(),
'pos_x': (emoji["sheet_x"] * 100) / 48,
'pos_y': (emoji["sheet_y"] * 100) / 48,
}
for emojiset in EMOJISETS:
SPRITE_CSS_PATH = os.path.join(cache_path, '%s_sprite.css' % (emojiset,))
sprite_css_file = open(SPRITE_CSS_PATH, 'w')
sprite_css_file.write(SPRITE_CSS_FILE_TEMPLATE % {'emojiset': emojiset,
'emoji_positions': emoji_positions,
})
sprite_css_file.close()
def setup_emoji_farm(cache_path, emoji_data):
# type: (str, List[Dict[str, Any]]) -> None
for emojiset in EMOJISETS:
# Copy individual emoji images from npm packages.
src_emoji_farm = os.path.join(
NODE_MODULES_PATH, 'emoji-datasource-' + emojiset, 'img', emojiset, '64', '*')
target_emoji_farm = os.path.join(cache_path, 'images-' + emojiset + '-64')
run(['mkdir', '-p', target_emoji_farm])
run(['cp', '-RPp', src_emoji_farm, target_emoji_farm], shell=True)
# Copy zulip.png to the emoji farm.
zulip_image = "{}/static/assets/zulip-emoji/*".format(ZULIP_PATH)
run(['cp', '-RPp', zulip_image, target_emoji_farm], shell=True)
# Copy spritesheets.
emoji_data_path = os.path.join(NODE_MODULES_PATH, 'emoji-datasource-' + emojiset)
input_sprite_sheet = os.path.join(emoji_data_path, 'img', emojiset, 'sheets-256', '64.png')
output_sprite_sheet = os.path.join(cache_path, 'sheet_%s_64.png' % (emojiset,))
run(['cp', input_sprite_sheet, output_sprite_sheet])
generate_sprite_css_files(cache_path, emoji_data)
def setup_old_emoji_farm(cache_path, emoji_map):
# type: (str, Dict[str, str]) -> None
# Code for setting up old emoji farm.
# Some image files in the old emoji farm had a different name than in the new emoji
# farm. `remapped_emojis` is a map that contains a mapping of their name in the old
# emoji farm to their name in the new emoji farm.
remapped_emojis = {
"0023": "0023-20e3", # Hash
"0030": "0030-20e3", # Zero
"0031": "0031-20e3", # One
"0032": "0032-20e3", # Two
"0033": "0033-20e3", # Three
"0034": "0034-20e3", # Four
"0035": "0035-20e3", # Five
"0036": "0036-20e3", # Six
"0037": "0037-20e3", # Seven
"0038": "0038-20e3", # Eight
"0039": "0039-20e3", # Nine
"1f48f": "1f469-200d-2764-200d-1f48b-200d-1f468", # Couple kiss
"1f491": "1f469-200d-2764-200d-1f468", # Couple with heart
}
os.chdir(cache_path)
emoji_cache_path = os.path.join(cache_path, 'images', 'emoji')
unicode_emoji_cache_path = os.path.join(cache_path, 'images', 'emoji', 'unicode')
google_emoji_cache_path = os.path.join(cache_path, 'images-google-64')
run(['mkdir', '-p', emoji_cache_path])
run(['mkdir', '-p', unicode_emoji_cache_path])
# Symlink zulip.png image file.
image_file_path = os.path.join(google_emoji_cache_path, 'zulip.png')
symlink_path = os.path.join(emoji_cache_path, 'zulip.png')
os.symlink(image_file_path, symlink_path)
unicode_symlink_path = os.path.join(unicode_emoji_cache_path, 'zulip.png')
os.symlink(image_file_path, unicode_symlink_path)
for name, codepoint in emoji_map.items():
mapped_codepoint = remapped_emojis.get(codepoint, codepoint)
image_file_path = os.path.join(google_emoji_cache_path, '{}.png'.format(mapped_codepoint))
symlink_path = os.path.join(emoji_cache_path, '{}.png'.format(name))
os.symlink(image_file_path, symlink_path)
try:
# `emoji_map` contains duplicate entries for the same codepoint with different
# names. So creation of symlink for <codepoint>.png may throw `FileExistsError`.
unicode_symlink_path = os.path.join(unicode_emoji_cache_path, '{}.png'.format(codepoint))
os.symlink(image_file_path, unicode_symlink_path)
except FileExistsError:
pass
def generate_map_files(cache_path, emoji_catalog):
# type: (str, Dict[str, List[str]]) -> None
# This function generates the various data files consumed by webapp, mobile apps, bugdown etc.
names = emoji_names_for_picker(EMOJI_NAME_MAPS)
codepoint_to_name = generate_codepoint_to_name_map(EMOJI_NAME_MAPS)
name_to_codepoint = generate_name_to_codepoint_map(EMOJI_NAME_MAPS)
EMOJI_CODES_FILE_PATH = os.path.join(cache_path, 'emoji_codes.js')
with open(EMOJI_CODES_FILE_PATH, 'w') as emoji_codes_file:
emoji_codes_file.write(EMOJI_CODES_FILE_TEMPLATE % {
'names': names,
'name_to_codepoint': name_to_codepoint,
'codepoint_to_name': codepoint_to_name,
'emoji_catalog': emoji_catalog,
})
NAME_TO_CODEPOINT_PATH = os.path.join(cache_path, 'name_to_codepoint.json')
with open(NAME_TO_CODEPOINT_PATH, 'w') as name_to_codepoint_file:
name_to_codepoint_file.write(ujson.dumps(name_to_codepoint))
CODEPOINT_TO_NAME_PATH = os.path.join(cache_path, 'codepoint_to_name.json')
with open(CODEPOINT_TO_NAME_PATH, 'w') as codepoint_to_name_file:
codepoint_to_name_file.write(ujson.dumps(codepoint_to_name))
def dump_emojis(cache_path):
# type: (str) -> None
with open('emoji_map.json') as emoji_map_file:
emoji_map = ujson.load(emoji_map_file)
# `emoji.json` or any other data file can be sourced from any of the supported
# emojiset packages, they all contain the same data files.
EMOJI_DATA_FILE_PATH = os.path.join(NODE_MODULES_PATH, 'emoji-datasource-google', 'emoji.json')
with open(EMOJI_DATA_FILE_PATH) as emoji_data_file:
emoji_data = ujson.load(emoji_data_file)
emoji_catalog = generate_emoji_catalog(emoji_data, EMOJI_NAME_MAPS)
# Setup emoji farms.
run(['rm', '-rf', cache_path])
setup_emoji_farm(cache_path, emoji_data)
setup_old_emoji_farm(cache_path, emoji_map)
# Generate various map files.
generate_map_files(cache_path, emoji_catalog)
if __name__ == "__main__":
main()
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