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setup.py

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import os

import platform

import sys

import ssl

import urllib.request

from pathlib import Path

def get_os_name():

system = platform.system()

if system == "Windows":

return "Windows 64-bit" if platform.machine().endswith('64') else "Windows 32-bit"

elif system == "Darwin":

return "macOS"

elif system == "Linux":

return "Linux"

elif system == "FreeBSD":

return "FreeBSD"

elif system.startswith("CYGWIN"):

return "Cygwin"

else:

return "Other"

def download_file(url, output_filename):

total_downloaded = 0

total_truncated = 0 # only print download progress every 2MB to avoid spamming logs

def report_progress(block_num, block_size, total_size):

nonlocal total_downloaded

nonlocal total_truncated

total_downloaded += block_size

if total_downloaded // (1024 * 1024) > total_truncated:

total_truncated = total_downloaded // (1024 * 1024)

if total_truncated % 2 == 0:

print(f"\rDownloaded {total_downloaded // (1024 * 1024)} MB", end="")

try:

ssl._create_default_https_context = ssl._create_stdlib_context

urllib.request.urlretrieve(url, output_filename, reporthook=report_progress)

print(f"\nDownloaded {output_filename}")

return True

except Exception as e:

print(f"\nFailed to download {output_filename}")

print(f"Error: {str(e)}")

sys.exit(1)

def check_os(os_name):

print("\nChecking System")

print("===============\n")

print(f" Operating System : {os_name}")

supported = {"macOS", "Linux"}

if os_name not in supported:

print("Unsupported operating system")

sys.exit(1)

def download_dawn(os_name):

print("\nDownload Dawn Library")

print("=====================\n")

outfile_map = {

"macOS": "third_party/lib/libdawn.dylib",

"Linux": "third_party/lib/libdawn.so",

}

url_map = {

"macOS": "https://github.com/austinvhuang/dawn-artifacts/releases/download/prerelease/libdawn.dylib",

"Linux": "https://github.com/austinvhuang/dawn-artifacts/releases/download/prerelease/libdawn.so",

}

outfile = outfile_map.get(os_name)

url = url_map.get(os_name)

if not outfile or not url:

print(f"No download information for {os_name}")

sys.exit(1)

print(f" URL : {url}")

print(f" Download File : {outfile}\n")

print(" Downloading ...\n")

if Path(outfile).exists():

print(f" File {outfile} already exists, skipping.")

sys.exit(0)

Path(outfile).parent.mkdir(parents=True, exist_ok=True)

download_file(url, outfile)

def setup_env(os_name):

print("\nEnvironment Setup")

print("=================\n")

current_dir = os.getcwd()

lib_dir = os.path.join(current_dir, "third_party", "lib")

if os_name == "macOS":

print(" Before running the program, run the following command or add it to your shell profile:")

print(f" export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:{lib_dir}")

with open("source", "w") as f:

f.write(f"export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:{lib_dir}\n")

if os_name == "Linux":

print(" Before running the program, run the following command or add it to your shell profile:")

print(f" export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:{lib_dir}")

with open("source", "w") as f:

f.write(f"export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:{lib_dir}\n")

def main():

os_name = get_os_name()

check_os(os_name)

download_dawn(os_name)

setup_env(os_name)

print()

if __name__ == "__main__":

main()