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Create a util.py Python module for common functions
Extracting these functions helps avoid circular dependencies, and make them easier to find/reuse.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,151 @@ | ||
| # Copyright 2013 The Servo Project Developers. See the COPYRIGHT | ||
| # file at the top-level directory of this distribution. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | ||
| # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | ||
| # option. This file may not be copied, modified, or distributed | ||
| # except according to those terms. | ||
|
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| from __future__ import absolute_import, print_function, unicode_literals | ||
|
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| import os | ||
| import os.path as path | ||
| import platform | ||
| import sys | ||
| from socket import error as socket_error | ||
| import StringIO | ||
| import tarfile | ||
| import zipfile | ||
| import urllib2 | ||
|
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| def host_triple(): | ||
| os_type = platform.system().lower() | ||
| if os_type == "linux": | ||
| os_type = "unknown-linux-gnu" | ||
| elif os_type == "darwin": | ||
| os_type = "apple-darwin" | ||
| elif os_type == "android": | ||
| os_type = "linux-androideabi" | ||
| elif os_type == "windows": | ||
| # If we are in a Visual Studio environment, use msvc | ||
| if os.getenv("PLATFORM") is not None: | ||
| os_type = "pc-windows-msvc" | ||
| elif os.getenv("MSYSTEM") is not None: | ||
| os_type = "pc-windows-gnu" | ||
| else: | ||
| os_type = "unknown" | ||
| elif os_type.startswith("mingw64_nt-") or os_type.startswith("cygwin_nt-"): | ||
| os_type = "pc-windows-gnu" | ||
| elif os_type == "freebsd": | ||
| os_type = "unknown-freebsd" | ||
| else: | ||
| os_type = "unknown" | ||
|
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| cpu_type = platform.machine().lower() | ||
| if os_type.endswith("-msvc"): | ||
| # vcvars*.bat should set it properly | ||
| platform_env = os.environ.get("PLATFORM") | ||
| if platform_env == "X86": | ||
| cpu_type = "i686" | ||
| elif platform_env == "X64": | ||
| cpu_type = "x86_64" | ||
| else: | ||
| cpu_type = "unknown" | ||
| elif cpu_type in ["i386", "i486", "i686", "i768", "x86"]: | ||
| cpu_type = "i686" | ||
| elif cpu_type in ["x86_64", "x86-64", "x64", "amd64"]: | ||
| cpu_type = "x86_64" | ||
| elif cpu_type == "arm": | ||
| cpu_type = "arm" | ||
| else: | ||
| cpu_type = "unknown" | ||
|
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| return "{}-{}".format(cpu_type, os_type) | ||
|
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| def download(desc, src, writer, start_byte=0): | ||
| if start_byte: | ||
| print("Resuming download of %s..." % desc) | ||
| else: | ||
| print("Downloading %s..." % desc) | ||
| dumb = (os.environ.get("TERM") == "dumb") or (not sys.stdout.isatty()) | ||
|
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| try: | ||
| req = urllib2.Request(src) | ||
| if start_byte: | ||
| req = urllib2.Request(src, headers={'Range': 'bytes={}-'.format(start_byte)}) | ||
| resp = urllib2.urlopen(req) | ||
|
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| fsize = None | ||
| if resp.info().getheader('Content-Length'): | ||
| fsize = int(resp.info().getheader('Content-Length').strip()) + start_byte | ||
|
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| recved = start_byte | ||
| chunk_size = 8192 | ||
|
|
||
| while True: | ||
| chunk = resp.read(chunk_size) | ||
| if not chunk: | ||
| break | ||
| recved += len(chunk) | ||
| if not dumb: | ||
| if fsize is not None: | ||
| pct = recved * 100.0 / fsize | ||
| print("\rDownloading %s: %5.1f%%" % (desc, pct), end="") | ||
|
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| sys.stdout.flush() | ||
| writer.write(chunk) | ||
|
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| if not dumb: | ||
| print() | ||
| except urllib2.HTTPError, e: | ||
| print("Download failed (%d): %s - %s" % (e.code, e.reason, src)) | ||
| if e.code == 403: | ||
| print("No Rust compiler binary available for this platform. " | ||
| "Please see https://github.com/servo/servo/#prerequisites") | ||
| sys.exit(1) | ||
| except urllib2.URLError, e: | ||
| print("Error downloading Rust compiler: %s. The failing URL was: %s" % (e.reason, src)) | ||
| sys.exit(1) | ||
| except socket_error, e: | ||
| print("Looks like there's a connectivity issue, check your Internet connection. %s" % (e)) | ||
| sys.exit(1) | ||
| except KeyboardInterrupt: | ||
| writer.flush() | ||
| raise | ||
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| def download_bytes(desc, src): | ||
| content_writer = StringIO.StringIO() | ||
| download(desc, src, content_writer) | ||
| return content_writer.getvalue() | ||
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| def download_file(desc, src, dst): | ||
| tmp_path = dst + ".part" | ||
| try: | ||
| start_byte = path.getsize(tmp_path) | ||
| with open(tmp_path, 'ab') as fd: | ||
| download(desc, src, fd, start_byte=start_byte) | ||
| except os.error: | ||
| with open(tmp_path, 'wb') as fd: | ||
| download(desc, src, fd) | ||
| os.rename(tmp_path, dst) | ||
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| def extract(src, dst, movedir=None): | ||
| if src.endswith(".zip"): | ||
| zipfile.ZipFile(src).extractall(dst) | ||
| else: | ||
| tarfile.open(src).extractall(dst) | ||
|
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| if movedir: | ||
| for f in os.listdir(movedir): | ||
| frm = path.join(movedir, f) | ||
| to = path.join(dst, f) | ||
| os.rename(frm, to) | ||
| os.rmdir(movedir) | ||
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| os.remove(src) |