Implement libuv updater script

util/update_libuv.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+
+from argparse import ArgumentParser
+import sys
+from os import path
+from subprocess import CalledProcessError, run
+import shutil
+import platform
+from util import clean_dir, remove_dir
+
+parser = ArgumentParser()
+parser.add_argument("version", nargs="?")
+
+args = parser.parse_args(sys.argv[1:])
+
+libuv_version = args.version.strip("v")
+
+DEPS_DIR = path.join(path.dirname(__file__), "../deps/")
+LIBUV_DIR = path.join(DEPS_DIR, "libuv")
+
+
+def move(item, src, dest):
+    return shutil.move(path.join(src, item), path.join(dest, item))
+
+
+def main(args):
+    libuv_repo = path.join(DEPS_DIR, "libuv_" + libuv_version)
+
+    print("Cloning libuv...")
+    run(
+        [
+            "git",
+            "clone",
+            "--quiet",
+            "--depth=1",
+            "https://github.com/libuv/libuv.git",
+            libuv_repo,
+        ]
+    )
+
+    print("Getting tags...")
+    run(["git", "fetch", "--quiet", "--depth=1", "--tags"], cwd=libuv_repo)
+
+    print("Checking out libuv v" + libuv_version + "...")
+    try:
+        run(
+            ["git", "checkout", "--quiet", "v" + libuv_version],
+            cwd=libuv_repo,
+            check=True,
+        )
+    except CalledProcessError:
+        print("Failed to checkout libuv: v" + libuv_version)
+        remove_dir(libuv_repo)
+        exit(1)
+
+    print("Copying header and source files...")
+    clean_dir(LIBUV_DIR)
+    move("src", libuv_repo, LIBUV_DIR)
+    move("include", libuv_repo, LIBUV_DIR)
+    remove_dir(libuv_repo)
+
+    print("Storing version information...")
+    with open(path.join(LIBUV_DIR, "version.md"), "w") as writer:
+        writer.write(libuv_version + " release")
+
+
+main(sys.argv)

util/util.py

@@ -0,0 +1,32 @@
+import os
+import os.path
+import platform
+import shutil
+import subprocess
+import sys
+
+
+def clean_dir(dir):
+    """If dir exists, deletes it and recreates it, otherwise creates it."""
+    if os.path.isdir(dir):
+        remove_dir(dir)
+
+    os.makedirs(dir)
+
+
+def ensure_dir(dir):
+    """Creates dir if not already there."""
+    if os.path.isdir(dir):
+        return
+
+    os.makedirs(dir)
+
+
+def remove_dir(dir):
+    """Recursively removes dir."""
+    if platform.system() == "Windows":
+        # rmtree gives up on readonly files on Windows
+        # rd doesn't like paths with forward slashes
+        subprocess.check_call(["cmd", "/c", "rd", "/s", "/q", dir.replace("/", "\\")])
+    else:
+        shutil.rmtree(dir)