import contextlib

import json

import re

import sys

from pathlib import Path

REPO = Path(__file__).absolute().parent.parent

sys.path.append(str(REPO / "src"))

from manage.urlutils import IndexDownloader

from manage.tagutils import CompanyTag, tag_or_range

from manage.verutils import Version

def usage():

print("Usage: repartition-index.py [-i options <FILENAME> ...] [options <OUTPUT> ...]")

print()

print(" --windows-default Implies default output files and configurations.")

print()

print(" -i <FILENAME> One or more files or URLs to read existing entries from.")

print(" -i -n/--no-recurse Do not follow 'next' info")

print("If no files are provided, uses the current online index")

print()

print(" <OUTPUT> Filename to write entries into")

print(" -d/--allow-dup Include entries written in previous outputs")

print(" --only-dup Only include entries written in previous outputs")

print(" --pre Include entries marked as prereleases")

print(" -t/--tag TAG Include only the specified tags (comma-separated)")

print(" -r/--range RANGE Include only the specified range (comma-separated)")

print(" --latest-micro Include only the latest x.y.z version")

print(" --report Write plain-text summary report")

print()

print("An output of 'nul' is permitted to drop entries.")

print("Providing the same inputs and outputs is permitted, as all inputs are read")

print("before any outputs are written.")

sys.exit(1)

class ReadFile:

def __init__(self):

self.source = None

self.recurse = True

def add_arg(self, arg):

if arg[:1] != "-":

self.source = arg

return True

if arg in ("-n", "--no-recurse"):

self.recurse = False

return False

raise ValueError("Unknown argument: " + arg)

def execute(self, versions, context):

for _, data in IndexDownloader(None, self.source, lambda *a: a):

versions.extend(data["versions"])

if not self.recurse:

break

class SortVersions:

def __init__(self):

pass

def add_arg(self, arg):

raise ValueError("Unknown argument: " + arg)

def _number_sortkey(self, k):

bits = []

for n in re.split(r"(\d+)", k):

try:

bits.append(f"{int(n):020}")

except ValueError:

bits.append(n)

return tuple(bits)

def _sort_key(self, v):

from manage.tagutils import _CompanyKey, _DescendingVersion

return (

_DescendingVersion(v["sort-version"]),

_CompanyKey(v["company"]),

self._number_sortkey(v["id"]),

)

def execute(self, versions, context):

versions.sort(key=self._sort_key)

print("Processing {} entries".format(len(versions)))

class SplitToFile:

def __init__(self):

self.target = None

self.allow_dup = False

self.only_dup = False

self.pre = False

self.tag_or_range = []

self._expect_tag_or_range = False

self.latest_micro = False

self.report = False

def add_arg(self, arg):

if arg[:1] != "-":

if self._expect_tag_or_range:

self.tag_or_range.append(tag_or_range(arg))

self._expect_tag_or_range = False

return False

self.target = arg

return True

if arg in ("-d", "--allow-dup"):

self.allow_dup = True

return False

if arg == "--only-dup":

self.allow_dup = True

self.only_dup = True

return False

if arg == "--pre":

self.pre = True

return False

if arg in ("-t", "--tag", "-r", "--range"):

self._expect_tag_or_range = True

return False

if arg == "--latest-micro":

self.latest_micro = True

return False

if arg == "--report":

self.report = True

return False

raise ValueError("Unknown argument: " + arg)

def execute(self, versions, context):

if self.report:

if self.target != "nul":

context.setdefault("reports", []).append(self.target)

return

written = context.setdefault("written", set())

written_now = set()

outputs = context.setdefault("outputs", {})

if self.target != "nul":

try:

output = outputs[self.target]

except KeyError:

context.setdefault("output_order", []).append(self.target)

output = outputs.setdefault(self.target, [])

else:

# Write to a list that'll be forgotten

output = []

latest_micro_skip = set()

for i in versions:

k = i["id"].casefold(), i["sort-version"].casefold()

v = Version(i["sort-version"])

if self.only_dup and k not in written_now:

written_now.add(k)

continue

if not self.allow_dup and k in written:

continue

if not self.pre and v.is_prerelease:

continue

if self.tag_or_range and not any(

r.satisfied_by(CompanyTag(i["company"], t))

for r in self.tag_or_range

for t in i["install-for"]

):

continue

if self.latest_micro:

k2 = i["id"].casefold(), v.to_python_style(2, with_dev=False)

if k2 in latest_micro_skip:

continue

latest_micro_skip.add(k2)

written.add(k)

output.append(i)

class WriteFiles:

def __init__(self):

self.indent = None

def add_arg(self, arg):

if arg == "-w-indent":

self.indent = 4

return False

if arg == "-w-indent1":

self.indent = 1

return False

raise ValueError("Unknown argument: " + arg)

@contextlib.contextmanager

def open(self, file):

file = Path(file)

if file.match("nul"):

import io

yield io.StringIO()

elif file.match("stdout"):

yield sys.stdout

else:

with open(file, "w", encoding="utf-8") as f:

yield f

def st_size(self, file):

file = Path(file)

if file.match("nul"):

return "no data written"

if file.match("stdout"):

return "n/a"

return f"{Path(file).stat().st_size} bytes"

def execute(self, versions, context):

outputs = context.get("outputs") or {}

output_order = context.get("output_order", [])

report_data = {}

for target, next_target in zip(output_order, [*output_order[1:], None]):

data = {

"versions": outputs[target]

}

if next_target:

data["next"] = next_target

for i in outputs[target]:

report_data.setdefault(target, {}).setdefault(i["sort-version"].casefold(), []).append(i)

with self.open(target) as f:

json.dump(data, f, indent=self.indent)

print("Wrote {} ({} entries, {} bytes)".format(

target, len(data["versions"]), self.st_size(target)

))

reports = context.get("reports", [])

for target in reports:

with self.open(target) as f:

for output_target in output_order:

print("Written to", output_target, file=f)

data = report_data[output_target]

for key in data:

ids = ", ".join(i["id"] for i in data[key])

print("{}: {}".format(key, ids), file=f)

print(file=f)

print("Wrote {} ({} bytes)".format(

target, self.st_size(target)

))

def parse_cli(args):

plan_read = []

plan_split = []

sort = SortVersions()

action = None

write = WriteFiles()

for a in args:

if a == "--windows-default":

print("Using equivalent of: --pre --latest-micro -r >=3.11.0 index-windows.json")

print(" --pre -r >=3.11.0 index-windows-recent.json")

print(" index-windows-legacy.json")

print(" --report index-windows.txt")

plan_split = [SplitToFile(), SplitToFile(), SplitToFile(), SplitToFile()]

plan_split[0].target = "index-windows.json"

plan_split[1].target = "index-windows-recent.json"

plan_split[2].target = "index-windows-legacy.json"

plan_split[3].target = "index-windows.txt"

plan_split[3].report = True

plan_split[0].pre = plan_split[1].pre = plan_split[2].pre = True

plan_split[0].latest_micro = True

plan_split[0].tag_or_range = [tag_or_range(">=3.11"), tag_or_range(">=3.13t")]

plan_split[1].tag_or_range = [tag_or_range(">=3.11"), tag_or_range(">=3.13t")]

elif a == "-i":

action = ReadFile()

plan_read.append(action)

elif a.startswith("-s-"):

sort.add_arg(a)

elif a.startswith("-w-"):

write.add_arg(a)

else:

try:

if action is None:

action = SplitToFile()

plan_split.append(action)

if action.add_arg(a):

action = None

continue

except ValueError as ex:

print(ex)

usage()

if not plan_read:

action = ReadFile()

action.source = "https://www.python.org/ftp/python/index-windows.json"

plan_read.append(action)

if not plan_split:

print("No outputs specified")

print(args)

usage()

return [*plan_read, sort, *plan_split, write]

if __name__ == "__main__":

plan = parse_cli(sys.argv[1:])

VERSIONS = []

CONTEXT = {}

for p in plan:

p.execute(VERSIONS, CONTEXT)