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mirkobrombin
d636b4305b
Assisted-by: Claude Code:claude-opus-5-5 AI-Scope: Wrote the font sets, face references and string lists and the newer collection, family and font interfaces from the public headers.
57 lines
3.2 KiB
Python
57 lines
3.2 KiB
Python
#!/usr/bin/env python3
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"""Write the method tables of the DirectWrite interfaces that Raven's dwrite component implements.
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Every interface starts as a table of stubs, one per method in the order of the public headers, so an object can be completed one method
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at a time and a call to a method nobody wrote shows up by name. The output holds, for each interface, an enumeration of the method
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positions, the stubs that report themselves, and the default table.
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usage: generate-dwrite-tables.py INCLUDE_DIRECTORY OUTPUT.h
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"""
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import re
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import sys
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from pathlib import Path
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INTERFACES = [
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("dwrite.h", "IDWriteFactory"), ("dwrite_1.h", "IDWriteFactory1"), ("dwrite_2.h", "IDWriteFactory2"), ("dwrite_3.h", "IDWriteFactory3"),
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("dwrite.h", "IDWriteFontCollection"), ("dwrite.h", "IDWriteFontList"), ("dwrite.h", "IDWriteFontFamily"),
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("dwrite.h", "IDWriteFont"), ("dwrite_1.h", "IDWriteFont1"), ("dwrite.h", "IDWriteFontFace"), ("dwrite_1.h", "IDWriteFontFace1"),
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("dwrite.h", "IDWriteFontFile"), ("dwrite.h", "IDWriteLocalizedStrings"), ("dwrite.h", "IDWriteRenderingParams"),
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("dwrite_1.h", "IDWriteRenderingParams1"), ("dwrite_2.h", "IDWriteRenderingParams2"), ("dwrite.h", "IDWriteGlyphRunAnalysis"), ("dwrite.h", "IDWriteGdiInterop"),
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("dwrite_2.h", "IDWriteFontFallback"), ("dwrite.h", "IDWriteTextFormat"), ("dwrite.h", "IDWriteTextLayout"),
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("dwrite.h", "IDWriteBitmapRenderTarget"), ("dwrite.h", "IDWriteFontFileStream"), ("dwrite_3.h", "IDWriteFontCollection1"),
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("dwrite_3.h", "IDWriteFontFamily1"), ("dwrite_3.h", "IDWriteFontSet"), ("dwrite_3.h", "IDWriteFontFaceReference"), ("dwrite_3.h", "IDWriteStringList"),
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("dwrite_3.h", "IDWriteFont3"), ("dwrite_3.h", "IDWriteFontList1"), ("dwrite_3.h", "IDWriteFontSet3"),
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]
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def methods(header, name):
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text = (header).read_text()
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found = re.search(r"typedef struct %sVtbl \{(.*?)\} %sVtbl;" % (name, name), text, re.S)
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if not found:
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raise SystemExit(f"no method table for {name}")
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return [member[1] for member in re.findall(r"\n\s*(?:BEGIN_INTERFACE\s*)?([A-Za-z_0-9 \*]+?)\s*\(STDMETHODCALLTYPE\s*\*(\w+)\)\((.*?)\);", found.group(1), re.S)]
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def main():
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include = Path(sys.argv[1])
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out = ["/* SPDX-License-Identifier: MIT\n * Copyright (c) 2026 Mirko Brombin\n * See LICENSES/MIT.txt.\n */\n",
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"/* Generated by scripts/generate-dwrite-tables.py from the DirectWrite headers. Do not edit. */\n",
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"/* The stubs return E_NOTIMPL and say which method was called; a table starts as all stubs. */\n"]
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for header, name in INTERFACES:
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names = methods(include / header, name)
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out.append(f"\nenum {{\n")
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for index, method in enumerate(names):
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out.append(f"\t{name}_{method} = {index},\n")
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out.append(f"\t{name}_methods = {len(names)}\n}};\n")
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for index, method in enumerate(names):
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out.append(f'static HRESULT STDMETHODCALLTYPE {name}_stub_{index}(void *self) {{ return unimplemented("{name}", "{method}"); }}\n')
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out.append(f"static void *{name}_table[{len(names)}] = {{\n")
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for index in range(len(names)):
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out.append(f"\t(void *){name}_stub_{index},\n")
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out.append("};\n")
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Path(sys.argv[2]).write_text("".join(out))
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main()
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