Merge pull request #32 from wangxiao1021/downloader

update downloader.py

paddlepalm/downloader.py

+# -*- coding: UTF-8 -*-
+#   Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 from __future__ import print_function
 import os
+import tarfile
+import shutil
+try:
+    from urllib.request import urlopen # Python 3
+except ImportError:
+    from urllib2 import urlopen # Python 2
+
+# for https
+import ssl
+ssl._create_default_https_context = ssl._create_unverified_context
 
 _items = {
-    'pretrain': {'ernie-en-uncased-large': 'http://xxxxx',
-                 'xxx': 'xxx',
-                 'utils': None}
-    'reader': {'cls': 'xxx',
-               'xxx': 'xxx',
-               'utils': 'xxx'}
-    'backbone': {xxx}
-    'tasktype': {xxx}
+    'pretrain': {'ernie-en-uncased-large': 'https://ernie.bj.bcebos.com/ERNIE_Large_en_stable-2.0.0.tar.gz',
+                 'bert-en-uncased-large': 'https://bert-models.bj.bcebos.com/uncased_L-24_H-1024_A-16.tar.gz',
+                 'utils': None},
+    'reader': {'utils': None},
+    'backbone': {'utils': None},
+    'tasktype': {'utils': None},
 }
 
+def _download(item, scope, path, silent=False):
+    if not silent:
+        print('Downloading {}: {} from {}...'.format(item, scope, _items[item][scope]))
+    data_url = _items[item][scope]
+    data_dir = path + '/' + item + '/' + scope
+    if not os.path.exists(data_dir):
+        os.makedirs(os.path.join(data_dir))
+    data_name = data_url.split('/')[-1]
+    filename = data_dir + '/' + data_name
 
-def demo():
-    raise NotImplementedError()
+    # print process
+    def _chunk_report(bytes_so_far, total_size):
+        percent = float(bytes_so_far) / float(total_size)
+        if percent > 1:
+            percent = 1
+        if not silent:
+            print('\r>> Downloading... {:.1%}'.format(percent), end = "")
+    
+    # copy to local
+    def _chunk_read(response, url, chunk_size = 16 * 1024, report_hook = None):
+        total_size = response.info().getheader('Content-Length').strip()
+        total_size = int(total_size)
+        bytes_so_far = 0
+        with open("%s" % filename, "wb") as f:
+            while 1:
+                chunk = response.read(chunk_size)
+                f.write(chunk)
+                f.flush() 
+                bytes_so_far += len(chunk)
+                if not chunk:
+                    break
+                if report_hook:
+                    report_hook(bytes_so_far, total_size)
+        return bytes_so_far
 
+    response = urlopen(data_url)
+    _chunk_read(response, data_url, report_hook=_chunk_report)
+    
+    if not silent:
+        print(' done!')
+    
+    if item == 'pretrain':
+        if not silent:
+            print ('Extracting {}...'.format(data_name), end=" ")
+        if os.path.exists(filename):
+            tar = tarfile.open(filename, 'r')
+            tar.extractall(path = data_dir)
+            tar.close()
+            os.remove(filename)
+        if scope == 'bert-en-uncased-large':
+            source_path = data_dir + '/' + data_name.split('.')[0]
+            fileList = os.listdir(source_path)
+            for file in fileList:
+                filePath = os.path.join(source_path, file)
+                shutil.move(filePath, data_dir)
+            os.removedirs(source_path)
+        if not silent:
+            print ('done!')
+        if not silent:
+            print ('Converting params...', end=" ")
+        _convert(data_dir, silent)
+        if not silent:
+            print ('done!')
 
-def _convert():
-    raise NotImplementedError()
+
+def _convert(path, silent=False):
+    if os.path.isfile(path + '/params/__palminfo__'):
+        if not silent:
+            print ('already converted.')
+    else:
+        if os.path.exists(path + '/params/'):
+            os.rename(path + '/params/', path + '/params1/')
+            os.mkdir(path + '/params/')
+            tar_model = tarfile.open(path + '/params/' + '__palmmodel__', 'w:gz')
+            tar_info = open(path + '/params/'+ '__palminfo__', 'w')
+            for root, dirs, files in os.walk(path + '/params1/'):
+                for file in files:
+                    src_file = os.path.join(root, file)
+                    tar_model.add(src_file, '__paddlepalm_' + file)
+                    tar_info.write('__paddlepalm_' + file)
+                    os.remove(src_file)
+            tar_model.close()
+            tar_info.close()
+            os.removedirs(path + '/params1/') 
 
 def download(item, scope='all', path='.'):
     item = item.lower()
     scope = scope.lower()
-    assert item in items, '{} is not found. Support list: {}'.format(item, list(items.keys()))
-
-    if not os.path.exists(path, item):
-        os.makedirs(os.path.join(path, item))
-
-    def _download(item, scope, silent=False):
-        if not silent:
-            print('downloading {}: {} from {}...'.format(item, scope, items[item][scope]), end='')
-        urllib.downloadxxx(items[item][scope], path)
-        if not silent:
-            print('done!')
-        
-    if items['utils'] is not None:
-        _download(item, 'utils', silent=True)
+    assert item in _items, '{} is not found. Support list: {}'.format(item, list(_items.keys()))
+   
+    if _items[item]['utils'] is not None:
+        _download(item, 'utils', path, silent=True)
 
     if scope != 'all':
-        assert scope in items[item], '{} is not found. Support scopes: {}'.format(item, list(items[item].keys()))
-        _download(item, scope)
+        assert scope in _items[item], '{} is not found. Support scopes: {}'.format(item, list(_items[item].keys()))
+        _download(item, scope, path)
     else:
-        for s in items[item].keys():
-            _download(item, s)
+        for s in _items[item].keys():
+            _download(item, s, path)
 
 
 def ls(item=None, scope='all'):
     pass
-
-