Re-adds download-deps.py, comments unzip functionality, please help to

test the download functionality. Thanks.

download-deps.py

@@ -0,0 +1,152 @@
+#!/usr/bin/env python
+#coding=utf-8
+#
+# ./download-deps.py
+#
+# Download Cocos2D-X resources from github (https://github.com/cocos2d/cocos2d-x-external) and extract from ZIP
+#
+# Helps prevent repo bloat due to large binary files since they can
+# be hosted separately.
+#
+
+import urllib2
+import os.path,zipfile
+import shutil
+import sys
+import traceback
+import distutils
+
+from time import time
+from sys import stdout
+from distutils.errors import DistutilsError
+from distutils.dir_util import copy_tree, remove_tree
+
+prefix = 'https://github.com/cocos2d/cocos2d-x-external/archive/'
+filename = 'v3-deps-1'
+extracted_folder_name='cocos2d-x-resources-' + filename
+
+def download_file(url, file_name):
+    print("--> Ready to download %s from %s" % (file_name, url))
+
+    u = urllib2.urlopen(url)
+    f = open(file_name, 'wb')
+    meta = u.info()
+    content_len = meta.getheaders("Content-Length")
+    file_size = 0
+    if content_len and len(content_len) > 0:
+        file_size = int(content_len[0])
+        print("--> Get file size succeed!")
+    else:
+        print("WARNING: Couldn't grab the file size, ignore it")
+
+    print("--> Start to download, please wait ...")
+
+    file_size_dl = 0
+    block_sz = 8192
+
+    old_time=time()
+
+    while True:
+        buffer = u.read(block_sz)
+        if not buffer:
+            break
+
+        file_size_dl += len(buffer)
+
+        f.write(buffer)
+        new_time = time()
+        if (new_time - old_time) > 1:
+            speed = len(buffer) / (new_time - old_time) / 1000
+            status = ""
+            if file_size != 0:
+                percent = int(file_size_dl * 100. / file_size)
+                status = r" Downloaded: %6dK / Total: %dK, Percent: %3.2f%%, Speed: %6.2f KB/S" % (file_size_dl / 1000, file_size / 1000, percent, speed)
+            else:
+                status = r" Downloaded: %6dK, Speed: %6.2f KB/S" % (file_size_dl / 1000, speed)
+
+            status = status + chr(8)*(len(status)+1)
+            print(status),
+            sys.stdout.flush()
+            old_time = new_time
+
+    print("--> Downloading finished!")
+    f.close()
+
+def default_filter(src,dst):
+    """The default progress/filter callback; returns True for all files"""
+    return dst
+
+def ensure_directory(target):
+    if not os.path.exists(target):
+        os.mkdir(target)
+
+def unpack_zipfile(filename, extract_dir, progress_filter=default_filter):
+    """Unpack zip `filename` to `extract_dir`
+
+    Raises ``UnrecognizedFormat`` if `filename` is not a zipfile (as determined
+    by ``zipfile.is_zipfile()``).  See ``unpack_archive()`` for an explanation
+    of the `progress_filter` argument.
+    """
+
+    if not zipfile.is_zipfile(filename):
+        raise UnrecognizedFormat("%s is not a zip file" % (filename,))
+
+    z = zipfile.ZipFile(filename)
+    try:
+        for info in z.infolist():
+            name = info.filename
+
+            # don't extract absolute paths or ones with .. in them
+            if name.startswith('/') or '..' in name:
+                continue
+
+            target = os.path.join(extract_dir, *name.split('/'))
+            target = progress_filter(name, target)
+            if not target:
+                continue
+            if name.endswith('/'):
+                # directory
+                ensure_directory(target)
+            else:
+                # file
+                data = z.read(info.filename)
+                f = open(target,'wb')
+                try:
+                    f.write(data)
+                finally:
+                    f.close()
+                    del data
+            unix_attributes = info.external_attr >> 16
+            if unix_attributes:
+                os.chmod(target, unix_attributes)
+    finally:
+        z.close()
+
+def main():
+    workpath = os.path.dirname(os.path.realpath(__file__))
+
+    if os.path.exists(extracted_folder_name):
+        shutil.rmtree(extracted_folder_name)
+
+    # if not os.path.isfile(filename + '.zip'):
+    download_file(prefix+filename+'.zip', filename+'.zip')
+
+    print("--> Extracting files, please wait ...")
+    # unpack_zipfile(filename+'.zip', workpath)
+    print("--> Extraction done!")
+    print("--> Copying files ...")
+    # distutils.dir_util.copy_tree(extracted_folder_name, workpath)
+    print("--> Cleaning ...")
+    # if os.path.isfile(filename+'.zip'):
+    #     os.remove(filename+'.zip')
+    # if os.path.exists(extracted_folder_name):
+    #     shutil.rmtree(extracted_folder_name)
+    print("--> DONE! Cheers!")
+
+# -------------- main --------------
+if __name__ == '__main__':
+    try:
+        main()
+    except Exception as e:
+        traceback.print_exc()
+        sys.exit(1)