Merge branch 'dev' into 'master'

bb files in repository and generate is os dependent

See merge request piotr.gawron/big-bed-generator!4

bb-maping-files/bb-files-location.md

+Mapping bb files are located on minerva-net: /var/www/genomics/
+
+Available by url:
+
+- https://minerva-net.lcsb.uni.lu/genomics/refGene38.bb
+- https://minerva-net.lcsb.uni.lu/genomics/refGene19.bb
+- https://minerva-net.lcsb.uni.lu/genomics/refGene18.bb

generate.py

@@ -5,6 +5,7 @@ import subprocess
 import sys
 import urllib.request
 from pathlib import Path
+from sys import platform
 
 BIN_PATH = "bin/"
 
@@ -38,7 +39,14 @@ def download_ucsc_file(filename):
         os.makedirs(BIN_PATH)
 
     if not Path(BIN_PATH + filename).is_file():
-        url = 'https://hgdownload.soe.ucsc.edu/admin/exe/linux.x86_64/' + filename
+        if platform == "linux" or platform == "linux2":
+            url = 'https://hgdownload.soe.ucsc.edu/admin/exe/linux.x86_64/' + filename
+        elif platform == "darwin":
+            url = 'https://hgdownload.soe.ucsc.edu/admin/exe/macOSX.x86_64/' + filename
+        else:
+            print("Platform not supported: " + platform)
+            sys.exit()
+
         print('Beginning file download ' + filename + ' (' + url + ')')
 
         urllib.request.urlretrieve(url, BIN_PATH + filename)