forked from OSchip/llvm-project
114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
//===- PackedVersion.cpp --------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implements the Mach-O packed version.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/TextAPI/PackedVersion.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/Support/Format.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
namespace llvm {
|
|
namespace MachO {
|
|
|
|
bool PackedVersion::parse32(StringRef Str) {
|
|
Version = 0;
|
|
|
|
if (Str.empty())
|
|
return false;
|
|
|
|
SmallVector<StringRef, 3> Parts;
|
|
SplitString(Str, Parts, ".");
|
|
|
|
if (Parts.size() > 3)
|
|
return false;
|
|
|
|
unsigned long long Num;
|
|
if (getAsUnsignedInteger(Parts[0], 10, Num))
|
|
return false;
|
|
|
|
if (Num > UINT16_MAX)
|
|
return false;
|
|
|
|
Version = Num << 16;
|
|
|
|
for (unsigned i = 1, ShiftNum = 8; i < Parts.size(); ++i, ShiftNum -= 8) {
|
|
if (getAsUnsignedInteger(Parts[i], 10, Num))
|
|
return false;
|
|
|
|
if (Num > UINT8_MAX)
|
|
return false;
|
|
|
|
Version |= (Num << ShiftNum);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
std::pair<bool, bool> PackedVersion::parse64(StringRef Str) {
|
|
bool Truncated = false;
|
|
Version = 0;
|
|
|
|
if (Str.empty())
|
|
return std::make_pair(false, Truncated);
|
|
|
|
SmallVector<StringRef, 5> Parts;
|
|
SplitString(Str, Parts, ".");
|
|
|
|
if (Parts.size() > 5)
|
|
return std::make_pair(false, Truncated);
|
|
|
|
unsigned long long Num;
|
|
if (getAsUnsignedInteger(Parts[0], 10, Num))
|
|
return std::make_pair(false, Truncated);
|
|
|
|
if (Num > 0xFFFFFFULL)
|
|
return std::make_pair(false, Truncated);
|
|
|
|
if (Num > 0xFFFFULL) {
|
|
Num = 0xFFFFULL;
|
|
Truncated = true;
|
|
}
|
|
Version = Num << 16;
|
|
|
|
for (unsigned i = 1, ShiftNum = 8; i < Parts.size() && i < 3;
|
|
++i, ShiftNum -= 8) {
|
|
if (getAsUnsignedInteger(Parts[i], 10, Num))
|
|
return std::make_pair(false, Truncated);
|
|
|
|
if (Num > 0x3FFULL)
|
|
return std::make_pair(false, Truncated);
|
|
|
|
if (Num > 0xFFULL) {
|
|
Num = 0xFFULL;
|
|
Truncated = true;
|
|
}
|
|
Version |= (Num << ShiftNum);
|
|
}
|
|
|
|
if (Parts.size() > 3)
|
|
Truncated = true;
|
|
|
|
return std::make_pair(true, Truncated);
|
|
}
|
|
|
|
void PackedVersion::print(raw_ostream &OS) const {
|
|
OS << format("%d", getMajor());
|
|
if (getMinor() || getSubminor())
|
|
OS << format(".%d", getMinor());
|
|
if (getSubminor())
|
|
OS << format(".%d", getSubminor());
|
|
}
|
|
|
|
} // end namespace MachO.
|
|
} // end namespace llvm.
|