autogen: migrate patches one-time script

tools/readme-autogen/migrate_patches.py

+#!/usr/bin/env python3
+
+import sys
+import argparse
+import json
+import os.path
+import posixpath
+from string import Template
+from itertools import groupby
+from functools import partial
+import urllib.request
+import urllib.parse
+
+from constants import OSKind, Product, WinSeries, DATAFILE_PATH, \
+    DRIVER_URL_TEMPLATE, DRIVER_DIR_PREFIX, BASE_PATH, REPO_BASE
+from utils import find_driver, linux_driver_key, windows_driver_key
+
+def posixpath_components(path):
+    result = []
+    while True:
+        head, tail = posixpath.split(path)
+        if head == path:
+            break
+        result.append(tail)
+        path = head
+    result.reverse()
+    if result and not result[-1]:
+        result.pop()
+    return result
+
+def validate_patch(patch64, patch32):
+    wc_base = os.path.abspath(os.path.join(BASE_PATH, "..", ".."))
+    base_parse = urllib.parse.urlsplit(REPO_BASE, scheme='http')
+    p64_parse = urllib.parse.urlsplit(patch64, scheme='http')
+    p32_parse = urllib.parse.urlsplit(patch32, scheme='http')
+    if not (p64_parse[0] == p32_parse[0] == base_parse[0]):
+        raise Exception("URL scheme doesn't match repo base URL scheme")
+    if not (p64_parse[1] == p32_parse[1] == base_parse[1]):
+        raise Exception("URL network location doesn't match repo base URL network location")
+    if posixpath.commonpath((base_parse[2], p64_parse[2], p32_parse[2])) != \
+        posixpath.commonpath((base_parse[2],)):
+        raise Exception("URL is not subpath of repo base path")
+    p64_posix_relpath = posixpath.relpath(p64_parse[2], base_parse[2])
+    p32_posix_relpath = posixpath.relpath(p32_parse[2], base_parse[2])
+    p64_comp = posixpath_components(p64_posix_relpath)
+    p32_comp = posixpath_components(p32_posix_relpath)
+    p64_filepath = os.path.join(wc_base, *p64_comp)
+    p32_filepath = os.path.join(wc_base, *p32_comp)
+    if not os.path.exists(p64_filepath):
+        raise Exception("File %s not found!" % p64_filepath)
+    if not os.path.exists(p32_filepath):
+        raise Exception("File %s not found!" % p32_filepath)
+    if os.path.getsize(p64_filepath) == 0:
+        raise Exception("File %s empty!" % p64_filepath)
+    if os.path.exists(p32_filepath) == 0:
+        raise Exception("File %s empty!" % p32_filepath)
+
+def main():
+    with open(DATAFILE_PATH) as data_file:
+        data = json.load(data_file)
+
+    drivers = data[OSKind.Windows.value]['x86_64']['drivers']
+    for d in drivers:
+        base, sep, tail = d['patch64_url'].rpartition('/')
+        assert sep
+        assert tail
+        d['patch64_url'] = base + '/' + 'nvencodeapi64.1337'
+        d['patch32_url'] = base + '/' + 'nvencodeapi.1337'
+        d['driver_url'] = d['driver_url']
+        validate_patch(d['patch64_url'], d['patch32_url'])
+    with open(DATAFILE_PATH, 'w') as data_file:
+        json.dump(data, data_file, indent=4)
+
+if __name__ == '__main__':
+    main()