#!/usr/bin/env python3
"""Generates Nvim :help docs from C/Lua docstrings, using Doxygen.
Also generates *.mpack files. To inspect the *.mpack structure:
:new | put=v:lua.vim.inspect(v:lua.vim.mpack.decode(readfile('runtime/doc/api.mpack','B')))
Flow:
main
extract_from_xml
fmt_node_as_vimhelp \
para_as_map } recursive
update_params_map /
render_node
TODO: eliminate this script and use Lua+treesitter (requires parsers for C and
Lua markdown-style docstrings).
The generated :help text for each function is formatted as follows:
- Max width of 78 columns (`text_width`).
- Indent with spaces (not tabs).
- Indent of 4 columns for body text (`indentation`).
- Function signature and helptag (right-aligned) on the same line.
- Signature and helptag must have a minimum of 8 spaces between them.
- If the signature is too long, it is placed on the line after the helptag.
Signature wraps at `text_width - 8` characters with subsequent
lines indented to the open parenthesis.
- Subsection bodies are indented an additional 4 spaces.
- Body consists of function description, parameters, return description, and
C declaration (`INCLUDE_C_DECL`).
- Parameters are omitted for the `void` and `Error *` types, or if the
parameter is marked as [out].
- Each function documentation is separated by a single line.
"""
import argparse
import os
import re
import sys
import shutil
import textwrap
import subprocess
import collections
import msgpack
import logging
from typing import Tuple
from pathlib import Path
from xml.dom import minidom
Element = minidom.Element
Document = minidom.Document
MIN_PYTHON_VERSION = (3, 6)
MIN_DOXYGEN_VERSION = (1, 9, 0)
if sys.version_info < MIN_PYTHON_VERSION:
print("requires Python {}.{}+".format(*MIN_PYTHON_VERSION))
sys.exit(1)
doxygen_version = tuple((int(i) for i in subprocess.check_output(["doxygen", "-v"],
universal_newlines=True).split()[0].split('.')))
if doxygen_version < MIN_DOXYGEN_VERSION:
print("\nRequires doxygen {}.{}.{}+".format(*MIN_DOXYGEN_VERSION))
print("Your doxygen version is {}.{}.{}\n".format(*doxygen_version))
sys.exit(1)
# Need a `nvim` that supports `-l`, try the local build
nvim_path = Path(__file__).parent / "../build/bin/nvim"
if nvim_path.exists():
nvim = str(nvim_path)
else:
# Until 0.9 is released, use this hacky way to check that "nvim -l foo.lua" works.
nvim_out = subprocess.check_output(['nvim', '-h'], universal_newlines=True)
nvim_version = [line for line in nvim_out.split('\n')
if '-l ' in line]
if len(nvim_version) == 0:
print((
"\nYou need to have a local Neovim build or a `nvim` version 0.9 for `-l` "
"support to build the documentation."))
sys.exit(1)
nvim = 'nvim'
# DEBUG = ('DEBUG' in os.environ)
INCLUDE_C_DECL = ('INCLUDE_C_DECL' in os.environ)
INCLUDE_DEPRECATED = ('INCLUDE_DEPRECATED' in os.environ)
log = logging.getLogger(__name__)
LOG_LEVELS = {
logging.getLevelName(level): level for level in [
logging.DEBUG, logging.INFO, logging.ERROR
]
}
text_width = 78
indentation = 4
script_path = os.path.abspath(__file__)
base_dir = os.path.dirname(os.path.dirname(script_path
| 