WindowsResourceDumper.cpp revision 360784 
1//===-- WindowsResourceDumper.cpp - Windows Resource printer --------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the Windows resource (.res) dumper for llvm-readobj.
10//
11//===----------------------------------------------------------------------===//
12
13#include "WindowsResourceDumper.h"
14#include "Error.h"
15#include "llvm/Object/WindowsResource.h"
16#include "llvm/Support/ConvertUTF.h"
17#include "llvm/Support/ScopedPrinter.h"
18
19namespace llvm {
20namespace object {
21namespace WindowsRes {
22
23std::string stripUTF16(const ArrayRef<UTF16> &UTF16Str) {
24  std::string Result;
25  Result.reserve(UTF16Str.size());
26
27  for (UTF16 Ch : UTF16Str) {
28    // UTF16Str will have swapped byte order in case of big-endian machines.
29    // Swap it back in such a case.
30    uint16_t ChValue = support::endian::byte_swap(Ch, support::little);
31    if (ChValue <= 0xFF)
32      Result += ChValue;
33    else
34      Result += '?';
35  }
36  return Result;
37}
38
39Error Dumper::printData() {
40  auto EntryPtrOrErr = WinRes->getHeadEntry();
41  if (!EntryPtrOrErr)
42    return EntryPtrOrErr.takeError();
43  auto EntryPtr = *EntryPtrOrErr;
44
45  bool IsEnd = false;
46  while (!IsEnd) {
47    printEntry(EntryPtr);
48
49    if (auto Err = EntryPtr.moveNext(IsEnd))
50      return Err;
51  }
52  return Error::success();
53}
54
55void Dumper::printEntry(const ResourceEntryRef &Ref) {
56  if (Ref.checkTypeString()) {
57    auto NarrowStr = stripUTF16(Ref.getTypeString());
58    SW.printString("Resource type (string)", NarrowStr);
59  } else {
60    SmallString<20> IDStr;
61    raw_svector_ostream OS(IDStr);
62    printResourceTypeName(Ref.getTypeID(), OS);
63    SW.printString("Resource type (int)", IDStr);
64  }
65
66  if (Ref.checkNameString()) {
67    auto NarrowStr = stripUTF16(Ref.getNameString());
68    SW.printString("Resource name (string)", NarrowStr);
69  } else
70    SW.printNumber("Resource name (int)", Ref.getNameID());
71
72  SW.printNumber("Data version", Ref.getDataVersion());
73  SW.printHex("Memory flags", Ref.getMemoryFlags());
74  SW.printNumber("Language ID", Ref.getLanguage());
75  SW.printNumber("Version (major)", Ref.getMajorVersion());
76  SW.printNumber("Version (minor)", Ref.getMinorVersion());
77  SW.printNumber("Characteristics", Ref.getCharacteristics());
78  SW.printNumber("Data size", (uint64_t)Ref.getData().size());
79  SW.printBinary("Data:", Ref.getData());
80  SW.startLine() << "\n";
81}
82
83} // namespace WindowsRes
84} // namespace object
85} // namespace llvm
86