88 lines
2.7 KiB
Python
Executable File
88 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# This script will update emsdk/bazel/revisions.bzl to the latest version of
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# emscripten. It reads emsdk/emscripten-releases-tags.json to get the latest
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# version number. Then, it downloads the prebuilts for that version and computes
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# the sha256sum for the archive. It then puts all this information into the
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# emsdk/bazel/revisions.bzl file.
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import hashlib
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import json
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import os
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import re
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import requests
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import sys
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STORAGE_URL = 'https://storage.googleapis.com/webassembly/emscripten-releases-builds'
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EMSDK_ROOT = os.path.dirname(os.path.dirname(__file__))
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RELEASES_TAGS_FILE = EMSDK_ROOT + '/emscripten-releases-tags.json'
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BAZEL_REVISIONS_FILE = EMSDK_ROOT + '/bazel/revisions.bzl'
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BAZEL_MODULE_FILE = EMSDK_ROOT + '/bazel/MODULE.bazel'
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def get_latest_info():
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with open(RELEASES_TAGS_FILE) as f:
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info = json.load(f)
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latest = info['aliases']['latest']
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return latest, info['releases'][latest]
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def get_sha(platform, archive_fmt, latest_hash, arch_suffix=''):
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r = requests.get(f'{STORAGE_URL}/{platform}/{latest_hash}/wasm-binaries{arch_suffix}.{archive_fmt}')
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r.raise_for_status()
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print(f'Fetching {r.url}')
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h = hashlib.new('sha256')
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for chunk in r.iter_content(chunk_size=1024):
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h.update(chunk)
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return h.hexdigest()
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def revisions_item(version, latest_hash):
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return f'''\
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"{version}": struct(
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hash = "{latest_hash}",
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sha_linux = "{get_sha('linux', 'tar.xz', latest_hash)}",
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sha_linux_arm64 = "{get_sha('linux', 'tar.xz', latest_hash, '-arm64')}",
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sha_mac = "{get_sha('mac', 'tar.xz', latest_hash)}",
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sha_mac_arm64 = "{get_sha('mac', 'tar.xz', latest_hash, '-arm64')}",
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sha_win = "{get_sha('win', 'zip', latest_hash)}",
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),
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'''
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def insert_revision(item):
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with open(BAZEL_REVISIONS_FILE, 'r') as f:
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lines = f.readlines()
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lines.insert(lines.index('EMSCRIPTEN_TAGS = {\n') + 1, item)
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with open(BAZEL_REVISIONS_FILE, 'w') as f:
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f.write(''.join(lines))
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def update_module_version(version):
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with open(BAZEL_MODULE_FILE, 'r') as f:
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content = f.read()
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pattern = r'(module\(\s*name = "emsdk",\s*version = )"\d+.\d+.\d+",\n\)'
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# Verify that the pattern exists in the input since re.sub will
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# will succeed either way.
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assert re.search(pattern, content)
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content = re.sub(pattern, fr'\1"{version}",\n)', content)
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with open(BAZEL_MODULE_FILE, 'w') as f:
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f.write(content)
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def main(argv):
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version, latest_hash = get_latest_info()
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update_module_version(version)
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item = revisions_item(version, latest_hash)
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print('inserting item:')
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print(item)
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insert_revision(item)
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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