metal3d · September 8, 2018 16:17 · Sep 8, 2018
diff --git a/dlblender b/dlblender
@@ -0,0 +1,112 @@
+#!/bin/env python3
+# -*- encoding: utf8 -*-
+"""
+Download latest build for Blender 2.7x and 2.8x
+
+How to use:
+- get that source code and name it "dlblender"
+- change vars INSTALL_PATH and LINK_PATH is you want
+   - INSTALL_PATH is where will reside new and old version of blender.
+     I'm using hidden path "~/.blender"
+   - LINK_PATH is where symbolic link to blender-2.79 and blender-2.80 will reside.
+     I'm using ~/Apps
+- set it executable, and put it in ~/.local/bin or /usr/local/bin (PATH)
+
+Then, call "dlblender" in a terminal
+
+Note:
+- I'm detecting CPU architecture to get archives
+- actually, not compatible with Mac and Windows, but I can do it later, that's why 
+  I made a function to detect archive type (tar, zip...) and CPU architecture. Right now
+  I only tested that on my Fedora 28
+- If you like it, or want more, maybe I'll create a real repository
+
+Author: Patrice Ferlet <[email protected]>
+License: WTFPL http://www.wtfpl.net/
+"""
+
+import os
+import re
+import platform
+import shutil
+import tarfile
+import tempfile
+import requests
+
+
+BASE = "https://builder.blender.org"
+INSTALL_DIR = os.path.expanduser("~/.blender")
+LINK_DIR = os.path.expanduser("~/Apps")
+
+def get_download():
+    """ Find download links """
+    arch = platform.machine()
+    find = r'href="(/?download/+blender-[a-z0-9-\.]+-%s[^"]+)"' % arch
+    resp = requests.get(BASE + "/download")
+    body = resp.text
+
+    matches = re.findall(find, body, re.DOTALL|re.MULTILINE)
+    matches = [m.replace("//", "/") for m in matches]
+    return matches
+
+def download(link):
+    """ Downlad chunked file """
+    bname = os.path.basename(link)
+    link = BASE + link
+    tmp = tempfile.gettempdir()
+    dest = os.path.join(tmp, bname)
+
+    if os.path.exists(dest):
+        print("File %s already downloaded" % dest)
+    else:
+        print("Downloading %s to %s" % (link, dest))
+        data = requests.get(link, stream=True)
+        if data.status_code == 200:
+            with open(dest, "wb+") as fdest:
+                for chunk in data:
+                    fdest.write(chunk)
+    return dest
+
+
+def install(blender):
+    """ Install blender from archive """
+    version = re.findall(r"blender-(\d+.\d+)-.*", blender)
+    version = version[0]
+    extracted = extract(blender)
+    new_version = os.path.join(INSTALL_DIR, extracted)
+    dest = os.path.join(LINK_DIR, "blender-" + version)
+
+    print("Linking %s -> %s" % (new_version, dest))
+    os.unlink(dest)
+    os.symlink(new_version, dest, target_is_directory=True)
+
+
+
+
+def extract(archive):
+    """ Universal archive extractor """
+    blender_dir = None
+    if archive_type(archive):
+        print("Extracting %s" % archive)
+        with tarfile.open(archive) as tfile:
+            blender_dir = os.path.dirname(tfile.firstmember.path)
+            if not os.path.exists(blender_dir):
+                tfile.extractall()
+        os.unlink(archive)
+    return blender_dir
+
+
+def archive_type(archive):
+    """ Return archive type for a given filename """
+    if ".tar.gz" in archive or ".tar.bz2" in archive:
+        return "tar"
+    if "zip" in archive:
+        return "zip"
+    return None
+
+if __name__ == "__main__":
+    os.chdir(INSTALL_DIR)
+    dl = get_download()
+    for d in dl:
+        d = download(d)
+        install(d)