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Download to tmp file then move to dst.

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This commit is contained in:
Shao Cheng 2017-01-24 00:07:51 +08:00
parent 8f0df03e30
commit dfe2e4f217
1 changed files with 9 additions and 10 deletions
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19
stackage.py
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@ -6,6 +6,7 @@
import os import os
import pathlib import pathlib
import requests import requests
import shutil
import subprocess import subprocess
import yaml import yaml
@ -23,22 +24,20 @@ class StackageSession(object):
print('{} exists, skipping'.format(file_path), flush=True) print('{} exists, skipping'.format(file_path), flush=True)
else: else:
args = [ args = [
'aria2c', url, '--dir={}'.format(dir_path), 'aria2c', url, '--dir={}'.format(dir_path), '--out={}.tmp'.format(url.split('/')[-1]),
'--file-allocation=none', '--quiet=true', '--file-allocation=none', '--quiet=true'
] ]
if sha1: if sha1:
args.append('--checksum=sha-1={}'.format(sha1)) args.append('--checksum=sha-1={}'.format(sha1))
if subprocess.run(args).returncode != 0 and file_path.is_file(): subprocess.run(args, check=True)
file_path.unlink() shutil.move('{}.tmp'.format(file_path), file_path)
raise OSError('Download failed for {}'.format(url)) print('Downloaded {} to {}'.format(url, file_path), flush=True)
else:
print('Downloaded {} to {}'.format(url, file_path), flush=True)
def load_stack_setup(self): def load_stack_setup(self):
d = yaml.load( d = yaml.load(
requests requests
.get('https://raw.githubusercontent.com/fpco/stackage-content/master/stack/stack-setup-2.yaml') .get('https://raw.githubusercontent.com/fpco/stackage-content/master/stack/stack-setup-2.yaml')
.content .content
) )
for platform in d['ghc']: for platform in d['ghc']:
for ver in d['ghc'][platform]: for ver in d['ghc'][platform]:
@ -49,7 +48,7 @@ class StackageSession(object):
) )
d['ghc'][platform][ver]['url'] = ( d['ghc'][platform][ver]['url'] = (
'http://mirrors.tuna.tsinghua.edu.cn/stackage/ghc/{}' 'http://mirrors.tuna.tsinghua.edu.cn/stackage/ghc/{}'
.format(d['ghc'][platform][ver]['url'].split('/')[-1]) .format(d['ghc'][platform][ver]['url'].split('/')[-1])
) )
d['msys2'] = { d['msys2'] = {