deblob

commit: 304a84419f73eb91f8c250c46f21b375b7777f96
parent d3bbf1c2a7776a643609069bb573cfc0bf28c4fa
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Tue, 21 Feb 2023 03:45:36 +0100

Add support for Pre-Compiled Headers (GCC, Clang)

Diffstat:
M
deblob.1
6
++++--
M
main.ha
14
+++++++++++++-

2 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/deblob.1 b/deblob.1
@@ -1,6 +1,6 @@
-.\" SPDX-FileCopyrightText: 2019-2022 deblob Authors <https://hacktivis.me/projects/deblob>
+.\" SPDX-FileCopyrightText: 2019-2023 deblob Authors <https://hacktivis.me/projects/deblob>
 .\" SPDX-License-Identifier: BSD-3-Clause
-.Dd 2022-02-18
+.Dd 2023-02-21
 .Dt DEBLOB 1
 .Os
 .Sh NAME
@@ -85,6 +85,8 @@ Emacs Lisp Bytecode
 Ren'Py Archives v1/v2/v3
 .It
 Squirrel bytecode
+.It
+Pre-Compiled Headers: Clang, GCC
 .El
 .Sh EXAMPLES
 The following code block shows how it can be used in Gentoo's
diff --git a/main.ha b/main.ha
@@ -1,4 +1,4 @@
-// Copyright © 2019-2022 deblob Authors <https://hacktivis.me/projects/deblob>
+// Copyright © 2019-2023 deblob Authors <https://hacktivis.me/projects/deblob>
 // SPDX-License-Identifier: BSD-3-Clause
 use bytes;
 use endian;
@@ -56,6 +56,18 @@ const magic: [_][]u8 = [
 	['R', 'P', 'A', '-', '3', '.', '0', ' '], // Ren'Py Archive v3
 
 	[0xFA, 0xFA], // Squirrel bytecode
+
+	['C', 'P', 'C', 'H'],
+	// Clang Pre-Compiled-Header, followed by Info Block, see:
+	// - clang/lib/Serialization/ASTWriter.cpp ASTWriter::WriteAST
+	// - clang/lib/Serialization/ASTReader.cpp doesntStartWithASTFileMagic
+	// Excluded from fixtures (200KB+), test with:
+	//   echo > empty.h && clang -cc1 -nobuiltininc -emit-pch -o empty.h.pch empty.h
+
+	['g', 'p', 'c', 'h'],
+	// GCC Pre-Compiled-Header
+	// Excluded from fixtures (1.2MB+), test with:
+	//   echo > empty.h && gcc empty.h
 ];
 const dos_magic: []u8 = ['M', 'Z'];
 const pe_magic: []u8 = ['P', 'E', 0x00, 0x00];