Never trust me to actually commit files.

Tools/download_swnfd.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+import os
+import sys
+import urllib.request
+import shutil
+
+CURRENT_VERSION = "robust_v0.1.0"
+RELEASES_ROOT = "https://github.com/space-wizards/nativefiledialog/releases/download/" \
+                + CURRENT_VERSION + "/"
+WINDOWS_FILENAME = "swnfd.dll"
+MACOS_FILENAME = "libswnfd.dylib"
+LINUX_FILENAME = "libswnfd.so"
+
+WINDOWS_TARGET_FILENAME = "swnfd.dll"
+LINUX_TARGET_FILENAME = "libswnfd.so"
+MACOS_TARGET_FILENAME = "libswnfd.dylib"
+
+
+def main():
+    platform = sys.argv[1]
+    target_os = sys.argv[2]
+    # Hah good luck passing something containing a space to the Exec MSBuild Task.
+    target_dir = " ".join(sys.argv[3:])
+
+    if platform != "x64":
+        print("Error: Unable to download swnfd for any platform outside x64. "
+              "If you REALLY want x86 support for some misguided reason, I'm not providing it.")
+        exit(1)
+
+    repo_dir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
+    dependencies_dir = os.path.join(repo_dir, "Dependencies", "swnfd")
+    version_file = os.path.join(dependencies_dir, "VERSION")
+    os.makedirs(dependencies_dir, exist_ok=True)
+
+    existing_version = "?"
+    if os.path.exists(version_file):
+        with open(version_file, "r") as f:
+            existing_version = f.read().strip()
+
+    if existing_version != CURRENT_VERSION:
+        for x in os.listdir(dependencies_dir):
+            os.remove(x)
+
+    with open(version_file, "w") as f:
+        f.write(CURRENT_VERSION)
+
+    filename = None
+    target_filename = None
+
+    if target_os == "Windows":
+        filename = WINDOWS_FILENAME
+        target_filename = WINDOWS_TARGET_FILENAME
+
+    elif target_os == "Linux":
+        filename = LINUX_FILENAME
+        target_filename = LINUX_TARGET_FILENAME
+
+    elif target_os == "MacOS":
+        filename = MACOS_FILENAME
+        target_filename = MACOS_TARGET_FILENAME
+
+    else:
+        print("Error: Unknown platform target:", target_os)
+        exit(2)
+
+    dependency_path = os.path.join(dependencies_dir, filename)
+    if not os.path.exists(dependency_path):
+        urllib.request.urlretrieve(RELEASES_ROOT + filename, dependency_path)
+
+    target_file_path = os.path.join(target_dir, target_filename)
+
+    if not os.path.exists(target_file_path) or \
+       os.stat(dependency_path).st_mtime > os.stat(target_file_path).st_mtime:
+        shutil.copy2(dependency_path, target_file_path)
+
+
+if __name__ == '__main__':
+    main()