mirror of
https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
a4af2ffda4
--offline given with the variable set is named as the option, and the runs the screen starts get it only when the user gave it. The first install page stays under its 400 words, the 3.8 runs skip only the pack test that needs generate_pack.
248 lines
10 KiB
Python
248 lines
10 KiB
Python
#!/usr/bin/env python3
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"""Rewrite the marked tables of wiki/installer.md from install.py.
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python scripts/generate_installer_doc.py rewrite the tables
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python scripts/generate_installer_doc.py --check exit 1 when one is stale
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Each table sits between `<!-- generated: NAME -->` and
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`<!-- /generated: NAME -->`. What install.py knows is written from it: the
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options and their arguments from its parser, the event kinds and their keys
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from EVENT_KEYS, the exit codes from its sys.exit calls, the RETROBIOS_PAD
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values and each route's keys from TUI_ROUTES. The prose cells (what an option
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does, when an event comes) are kept as written, matched by their row. A row
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install.py gains has no prose yet: the generator names it and writes nothing,
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and the row is added by hand inside the markers, its first cell holding the
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option, kind, code or value alone.
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"""
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from __future__ import annotations
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import argparse
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import ast
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import importlib.util
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import re
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import sys
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from pathlib import Path, PurePosixPath
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ROOT = Path(__file__).resolve().parent.parent
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PAGE = ROOT / "wiki" / "installer.md"
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INSTALLER = ROOT / "install.py"
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_spec = importlib.util.spec_from_file_location("install", INSTALLER)
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_install = importlib.util.module_from_spec(_spec)
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_spec.loader.exec_module(_install)
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BLOCK = re.compile(
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r"(?P<open><!-- generated: (?P<name>[a-z-]+) -->\n)(?P<body>.*?)"
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r"(?P<close><!-- /generated: (?P=name) -->)", re.S)
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_CELL = re.compile(r"(?<!\\)\|")
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# The help screen's actions, as the page names them.
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ACTIONS = {
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"move": "Move",
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"page": "Page",
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"ok": "Continue, open, choose",
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"tick": "Tick, untick",
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"options": "Options",
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"back": "Back, and quit on the first screen",
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"stop": "Stop an install",
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"kill": "Quit at once",
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"enter": "Use the folder typed",
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"esc": "Clear a filter, leave the folder typed",
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}
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# The two routes no launcher names, as the page heads their columns.
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ROUTE_HEADINGS = {"keys": "Computer (`keys`)", "both": "Unknown (`both`)"}
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class MissingProse(Exception):
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"""Rows install.py has that the page does not describe yet."""
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def _cells(line: str) -> list[str]:
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return [cell.strip() for cell in _CELL.split(line.strip().strip("|"))]
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def _rows(body: str) -> list[list[str]]:
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lines = [line for line in body.splitlines() if line.startswith("|")]
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return [_cells(line) for line in lines[2:]]
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def _prose(body: str, key: re.Pattern[str], width: int) -> dict[str, list[str]]:
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"""The prose cells of each row, by the key its first cell holds."""
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kept = {}
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for cells in _rows(body):
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found = key.search(cells[0])
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if found:
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kept[found.group(1)] = (cells[1:] + [""] * width)[:width]
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return kept
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def _table(heading: list[str], rows: list[list[str]]) -> str:
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lines = ["| " + " | ".join(heading) + " |",
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"|" + "|".join("-" * (len(cell) + 2) for cell in heading) + "|"]
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lines += ["| " + " | ".join(row) + " |" for row in rows]
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return "\n".join(lines) + "\n"
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def _with_prose(name: str, facts: list[tuple[str, str]], body: str, key: str,
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width: int) -> list[list[str]]:
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"""Each row's first cell from install.py, the rest from the page, whose
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last cell must be written."""
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prose = _prose(body, re.compile(key), width)
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missing = [fact for fact, _cell in facts if not prose.get(fact, [""])[-1]]
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if missing:
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raise MissingProse(f"{name}: no text for {', '.join(missing)}")
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return [[cell, *prose[fact]] for fact, cell in facts]
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def option_rows(body: str) -> list[list[str]]:
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facts = []
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# argparse's own --help last, after the options of the run.
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for action in sorted(_install.build_parser()._actions,
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key=lambda action: isinstance(action, argparse._HelpAction)):
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flags = sorted(action.option_strings, key=lambda flag: not flag.startswith("--"))
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metavar = "" if action.nargs == 0 else (action.metavar or action.dest.upper())
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shown = ", ".join(f"`{flag} {metavar}`" if metavar else f"`{flag}`" for flag in flags)
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facts.append((flags[0], f'<span id="option-{flags[0][2:]}"></span>{shown}'))
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return _with_prose("options", facts, body, r"`(--[a-z-]+)", 1)
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def exit_codes() -> list[int]:
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"""The codes install.py exits with: its sys.exit calls, 0 for a run
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that returns, 2 for an option argparse refuses."""
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codes = {0, 2}
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for node in ast.walk(ast.parse(INSTALLER.read_text(encoding="utf-8"))):
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if not (isinstance(node, ast.Call) and isinstance(node.func, ast.Attribute)
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and node.func.attr == "exit" and getattr(node.func.value, "id", "") == "sys"
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and node.args):
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continue
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given = node.args[0]
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for value in ((given.body, given.orelse) if isinstance(given, ast.IfExp) else (given,)):
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if isinstance(value, ast.Constant) and isinstance(value.value, int):
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codes.add(value.value)
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return sorted(codes)
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def exit_rows(body: str) -> list[list[str]]:
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facts = [(str(code), f"`{code}`") for code in exit_codes()]
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return _with_prose("exit-codes", facts, body, r"`(\d+)`", 1)
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def event_rows(body: str) -> list[list[str]]:
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facts = [(kind, f"`{kind}`") for kind in _install.EVENT_KEYS]
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rows = _with_prose("events", facts, body, r"`([a-z_]+)`", 2)
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for row, keys in zip(rows, _install.EVENT_KEYS.values()):
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row[1] = ", ".join(f"`{key}`" for key in keys)
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return rows
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def pad_rows(body: str) -> list[list[str]]:
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facts = [(route, f"`{route}`") for route in _install.TUI_PAD_ROUTES]
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return _with_prose("pad-routes", facts, body, r"`([a-z_]+)`", 2)
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def route_keys() -> str:
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routes = _install.TUI_ROUTES
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actions = list(next(iter(routes.values())).help)
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unnamed = [action for action in actions if action not in ACTIONS]
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if unnamed or any(list(route.help) != actions for route in routes.values()):
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raise MissingProse(f"route-keys: TUI_ROUTES actions {unnamed or 'differ by route'} "
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"need a name in ACTIONS")
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heading = ["Action", *(ROUTE_HEADINGS.get(name, f"`{name}`") for name in routes)]
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rows = [[ACTIONS[action], *(route.help[action] or "none" for route in routes.values())]
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for action in actions]
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return _table(heading, rows)
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def _marker(rule: _install._OsRule) -> str:
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"""A card rule's evidence in words: the file or folder, and the line it
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holds for a rule that reads one."""
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if rule.method == "file_matches":
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path, pattern = rule.values
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line = re.sub(r"\\s\*\$$", "", re.sub(r"^(\^|\\A)", "", pattern)).replace("\\", "")
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return f"`{path}` holding the line `{line}`"
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return ", ".join(f"`{value}`" if PurePosixPath(value).suffix else f"`{value}/`"
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for value in rule.values)
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def _list_words(plat: str) -> str:
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name = _install.display_name(plat)
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return f"{name}'{'' if name.endswith('s') else 's'} list"
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def card_marker_rows() -> list[list[str]]:
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"""The files that name a card or a SHARE drive, in the order they are
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read: install.py's card rules, then its SHARE drive files."""
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rows = [[_marker(rule), rule.name, f"`{rule.bios}`, {_list_words(rule.manifest)}"]
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for rule in _install._card_rules()]
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hostname = "system.hostname=BATOCERA"
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for plat, marker in _install._SHARE_DRIVES:
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name = _install.display_name(plat)
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evidence = (f"`{marker}` holding `{hostname}` or no hostname line, and no KNULLI file "
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"above" if plat == "batocera" else f"`{marker}`")
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rows.append([evidence, f"{name} SHARE drive", f"`bios`, {_list_words(plat)}"])
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rows.append([f"`{_install._SHARE_DRIVES[0][1]}` with any other hostname, and no KNULLI "
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"file above, or the files of two SHARE drives",
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"named by neither: the run says which systems it could be",
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"the folder of the system named with `--platform`"])
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return rows
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def render(page: str) -> str:
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"""The page with each marked table written from install.py."""
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writers = {
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"options": lambda body: _table(["Option", "Effect"], option_rows(body)),
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"exit-codes": lambda body: _table(["Code", "Meaning"], exit_rows(body)),
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"events": lambda body: _table(["Kind", "Keys", "When"], event_rows(body)),
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"pad-routes": lambda body: _table(["Value", "Input", "Set by"], pad_rows(body)),
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"route-keys": lambda _body: route_keys(),
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"card-markers": lambda _body: _table(["On the card", "System", "Files go to"],
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card_marker_rows()),
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}
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seen = []
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def write(match: re.Match[str]) -> str:
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name = match.group("name")
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if name not in writers:
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raise MissingProse(f"no table is written for the marker {name!r}")
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seen.append(name)
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table = writers[name](match.group("body"))
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return f"{match.group('open')}\n{table}\n{match.group('close')}"
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text = BLOCK.sub(write, page)
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absent = sorted(set(writers) - set(seen))
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if absent:
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raise MissingProse(f"markers missing from the page: {', '.join(absent)}")
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return text
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def main(argv: list[str] | None = None) -> int:
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parser = argparse.ArgumentParser(allow_abbrev=False, description=__doc__,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument("--check", action="store_true",
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help="exit 1 when a table differs from install.py, writing nothing")
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parser.add_argument("--page", type=Path, default=PAGE, help=argparse.SUPPRESS)
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args = parser.parse_args(argv)
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current = args.page.read_text(encoding="utf-8")
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try:
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text = render(current)
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except MissingProse as exc:
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print(f"{args.page}: {exc}. Add the row inside its markers, then run "
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"python scripts/generate_installer_doc.py", file=sys.stderr)
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return 1
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if text == current:
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return 0
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if args.check:
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print(f"{args.page} differs from install.py: run "
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"python scripts/generate_installer_doc.py", file=sys.stderr)
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return 1
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args.page.write_text(text, encoding="utf-8")
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print(f"Wrote {args.page}")
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return 0
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if __name__ == "__main__":
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from common import run_cli
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run_cli(main)
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