Create a python script to download the newest golibs.aar and replace …

…the older one with it, for convenience. It is necessary to have Python modules [requests] and [lxml] installed before running this script.

pull_golibs.py

@@ -0,0 +1,50 @@
+# coding=utf-8
+import os
+import requests
+from lxml import etree
+
+
+def figure_out_download_url():
+    html = requests.get('https://github.com/trojan-gfw/igniter-go-libs/releases/')
+    if not html.ok:
+        return None
+    root = etree.HTML(html.content)
+    first_release_entry_div = root.find('.//div[@class="release-entry"]')
+    if first_release_entry_div is None:
+        return None
+    download_a = first_release_entry_div.find('.//div/div[2]/details/div/div/div[1]/a')
+    url_sub_path = download_a.get('href')
+    return 'https://github.com' + url_sub_path
+
+
+def replace_golibs():
+    golibs_path = './app/src/libs/golibs.aar'
+    if os.path.exists(golibs_path):
+        os.remove(golibs_path)
+    os.rename('tmp.aar', golibs_path)
+
+
+def download_golibs():
+    print('Figuring out url to download golibs.aar ...')
+    download_url = figure_out_download_url()
+    if download_url is None:
+        print('Failed to figure out download url')
+        return
+    print('Download url: {0} downloading ...'.format(download_url))
+    r = requests.get(url=download_url, allow_redirects=True)
+    if not r.ok:
+        print('Download golibs.aar failed')
+        return
+    with open('tmp.aar', 'wb') as output:
+        output.write(r.content)
+    print('Download success')
+    replace_golibs()
+    print('Done')
+
+
+def main():
+    download_golibs()
+
+
+if __name__ == '__main__':
+    main()