#!/usr/bin/env?python2.7
#?pylint:?disable=C0301
from?__future__?import?absolute_import?unicode_literals?print_function?division

from?sys?import?argv
from?os?import?environ?stat?chdir?remove?as?_delete_file
from?os.path?import?dirname?basename?abspath?realpath?expandvars
from?hashlib?import?sha256
from?subprocess?import?check_call?as?run
from?json?import?load?dump?as?save
from?contextlib?import?contextmanager
from?datetime?import?datetime

from?boto.s3.connection?import?S3Connection
from?boto.s3.key?import?Key
from?boto.exception?import?S3ResponseError


CONFIG_FILE?=?‘./S3Cachefile.json‘
UPLOAD_TODO_FILE?=?‘./S3CacheTodo.json‘
BYTES_PER_MB?=?1024?*?1024


@contextmanager
def?timer（）:
????start?=?datetime.utcnow（）
????yield
????end?=?datetime.utcnow（）
????elapsed?=?end?-?start
????print（“\tDone.?Took“?int（elapsed.total_seconds（））?“second（s）.“）


@contextmanager
def?todo_file（writeback=True）:
????try:
????????with?open（UPLOAD_TODO_FILE?‘rt‘）?as?json_file:
????????????todo?=?load（json_file）
????except?（IOError?OSError?ValueError）:
????????todo?=?{}

????yield?todo

????if?writeback:
????????try:
????????????with?open（UPLOAD_TODO_FILE?‘wt‘）?as?json_file:
????????????????save（todo?json_file）
????????except?（OSError?IOError）?as?save_err:
????????????print（“Error?saving?{}:“.format（UPLOAD_TODO_FILE）?save_err）


def?_sha256_of_file（filename）:
????hasher?=?sha256（）
????with?open（filename?‘rb‘）?as?input_file:
????????hasher.update（input_file.read（））
????file_hash?=?hasher.hexdigest（）
????print（‘sha256（{}）?=?{}‘.format（filename?file_hash））
????return?file_hash


def?_delete_file_quietly（filename）:
????try:
????????_delete_file（filename）
????except?（OSError?IOError）:
????????pass


def?mark_needs_uploading（cache_name）:
????with?todo_file（）?as?todo:
????????todo[cache_name]?=?True


def?mark_uploaded（cache_name）:
????with?todo_file（）?as?todo:
????????todo.pop（cache_name?None）


def?need_to_upload（cache_name）:
????with?todo_file（writeback=False）?as?todo:
????????return?todo.get（cache_name?False）


def?_tarball_size（directory）:
????kib?=?stat（_tarball_filename_for（directory））.st_size?//?BYTES_PER_MB
????return?“{}?MiB“.format（kib）


def?_tarball_filename_for（directory）:
????return?abspath（‘./{}.tar.gz‘.format（basename（directory）））


def?_create_tarball（directory）:
????print（“Creating?tarball?of?{}...“.format（directory））
????with?timer（）:
????????run（[‘tar‘?‘-czf‘?_tarball_filename_for（directory）?‘-C‘?dirname（directory）?basename（directory）]）


def?_extract_tarball（directory）:
????print（“Extracting?tarball?of?{}...“.format（directory））
????with?timer（）:
????????run（[‘tar‘?‘-xzf‘?_tarball_filename_for（directory）?‘-C‘?dirname（directory）]）


def?download（directory）:
????mark_uploaded（cache_name）??#?reset
????try:
????????print（“Downloading?{}?tarball?from?S3...“.format（cache_name））
????????with?timer（）:
????????????key.get_contents_to_filename（_tarball_filename_for（directory））
????except?S3ResponseError?as?err:
????????mark_needs_u

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-06-26?16:36??bootstrap-3.2.0\
?????文件?????????191??2014-06-26?16:36??bootstrap-3.2.0\.editorconfig
?????文件?????????184??2014-06-26?16:36??bootstrap-3.2.0\.gitattributes
?????文件?????????451??2014-06-26?16:36??bootstrap-3.2.0\.gitignore
?????文件????????2007??2014-06-26?16:36??bootstrap-3.2.0\.travis.yml
?????文件??????????17??2014-06-26?16:36??bootstrap-3.2.0\CNAME
?????文件????????8384??2014-06-26?16:36??bootstrap-3.2.0\CONTRIBUTING.md
?????文件???????12948??2014-06-26?16:36??bootstrap-3.2.0\Gruntfile.js
?????文件????????1084??2014-06-26?16:36??bootstrap-3.2.0\LICENSE
?????文件????????5883??2014-06-26?16:36??bootstrap-3.2.0\README.md
?????文件????????1066??2014-06-26?16:36??bootstrap-3.2.0\_config.yml
?????文件?????????849??2014-06-26?16:36??bootstrap-3.2.0\bower.json
?????文件?????????743??2014-06-26?16:36??bootstrap-3.2.0\composer.json
?????目錄???????????0??2014-06-26?16:36??bootstrap-3.2.0\dist\
?????目錄???????????0??2014-06-26?16:36??bootstrap-3.2.0\dist\css\
?????文件???????21368??2014-06-26?16:36??bootstrap-3.2.0\dist\css\bootstrap-theme.css
?????文件???????23071??2014-06-26?16:36??bootstrap-3.2.0\dist\css\bootstrap-theme.css.map
?????文件???????18860??2014-06-26?16:36??bootstrap-3.2.0\dist\css\bootstrap-theme.min.css
?????文件??????132546??2014-06-26?16:36??bootstrap-3.2.0\dist\css\bootstrap.css
?????文件??????220790??2014-06-26?16:36??bootstrap-3.2.0\dist\css\bootstrap.css.map
?????文件??????109518??2014-06-26?16:36??bootstrap-3.2.0\dist\css\bootstrap.min.css
?????目錄???????????0??2014-06-26?16:36??bootstrap-3.2.0\dist\fonts\
?????文件???????20335??2014-06-26?16:36??bootstrap-3.2.0\dist\fonts\glyphicons-halflings-regular.eot
?????文件???????62927??2014-06-26?16:36??bootstrap-3.2.0\dist\fonts\glyphicons-halflings-regular.svg
?????文件???????41280??2014-06-26?16:36??bootstrap-3.2.0\dist\fonts\glyphicons-halflings-regular.ttf
?????文件???????23320??2014-06-26?16:36??bootstrap-3.2.0\dist\fonts\glyphicons-halflings-regular.woff
?????目錄???????????0??2014-06-26?16:36??bootstrap-3.2.0\dist\js\
?????文件???????60681??2014-06-26?16:36??bootstrap-3.2.0\dist\js\bootstrap.js
?????文件???????31819??2014-06-26?16:36??bootstrap-3.2.0\dist\js\bootstrap.min.js
?????目錄???????????0??2014-06-26?16:36??bootstrap-3.2.0\docs\
?????文件???????19466??2014-06-26?16:36??bootstrap-3.2.0\docs\LICENSE
............此處省略369個文件信息