arch:using axel to pre-download source file | info window handling list attributes better

bauh/api/abstract/context.py

@@ -1,8 +1,10 @@
 import logging
 import platform
+import sys
 
 from bauh.api.abstract.cache import MemoryCacheFactory
 from bauh.api.abstract.disk import DiskCacheLoaderFactory
+from bauh.api.abstract.download import FileDownloader
 from bauh.api.http import HttpClient
 
 
@@ -10,7 +12,7 @@ class ApplicationContext:
 
     def __init__(self, disk_cache: bool, download_icons: bool, http_client: HttpClient, app_root_dir: str, i18n: dict,
                  cache_factory: MemoryCacheFactory, disk_loader_factory: DiskCacheLoaderFactory,
-                 logger: logging.Logger):
+                 logger: logging.Logger, file_downloader: FileDownloader):
         """
         :param disk_cache: if package data should be cached to disk
         :param download_icons: if packages icons should be downloaded
@@ -20,6 +22,7 @@ class ApplicationContext:
         :param cache_factory:
         :param disk_loader_factory:
         :param logger: a logger instance
+        :param file_downloader:
         """
         self.disk_cache = disk_cache
         self.download_icons = download_icons
@@ -30,3 +33,8 @@ class ApplicationContext:
         self.disk_loader_factory = disk_loader_factory
         self.logger = logger
         self.linux_distro = platform.linux_distribution()
+        self.file_downloader = file_downloader
+        self.arch_x86_64 = sys.maxsize > 2**32
+
+    def is_system_x86_64(self):
+        return self.arch_x86_64

bauh/api/abstract/download.py

@@ -0,0 +1,21 @@
+from abc import ABC, abstractmethod
+
+from bauh.api.abstract.handler import ProcessWatcher
+
+
+class FileDownloader(ABC):
+
+    @abstractmethod
+    def download(self, file_url: str, watcher: ProcessWatcher, output_path: str, cwd: str) -> bool:
+        """
+        :param file_url:
+        :param watcher:
+        :param output_path: the downloaded file output path. Leave None for the current directory and the same file name
+        :param cwd: current working directory. Leave None if does not matter.
+        :return: success / failure
+        """
+        pass
+
+    @abstractmethod
+    def is_multithreaded(self) -> bool:
+        pass

bauh/api/http.py

@@ -38,3 +38,13 @@ class HttpClient:
     def get_json(self, url: str):
         res = self.get(url)
         return res.json() if res else None
+
+    def get_content_length(self, url: str) -> int:
+        """
+        :param url:
+        :return:
+        """
+        res = self.session.head(url)
+
+        if res.status_code == 200:
+            return res.headers['content-length']