You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.2 KiB
123 lines
3.2 KiB
//===-- UUID.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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "lldb/Utility/UUID.h"
|
|
|
|
#include "lldb/Utility/Stream.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/Format.h"
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
using namespace lldb_private;
|
|
|
|
// Whether to put a separator after count uuid bytes.
|
|
// For the first 16 bytes we follow the traditional UUID format. After that, we
|
|
// simply put a dash after every 6 bytes.
|
|
static inline bool separate(size_t count) {
|
|
if (count >= 10)
|
|
return (count - 10) % 6 == 0;
|
|
|
|
switch (count) {
|
|
case 4:
|
|
case 6:
|
|
case 8:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
UUID UUID::fromCvRecord(UUID::CvRecordPdb70 debug_info) {
|
|
llvm::sys::swapByteOrder(debug_info.Uuid.Data1);
|
|
llvm::sys::swapByteOrder(debug_info.Uuid.Data2);
|
|
llvm::sys::swapByteOrder(debug_info.Uuid.Data3);
|
|
llvm::sys::swapByteOrder(debug_info.Age);
|
|
if (debug_info.Age)
|
|
return UUID::fromOptionalData(&debug_info, sizeof(debug_info));
|
|
return UUID::fromOptionalData(&debug_info.Uuid, sizeof(debug_info.Uuid));
|
|
}
|
|
|
|
std::string UUID::GetAsString(llvm::StringRef separator) const {
|
|
std::string result;
|
|
llvm::raw_string_ostream os(result);
|
|
|
|
for (auto B : llvm::enumerate(GetBytes())) {
|
|
if (separate(B.index()))
|
|
os << separator;
|
|
|
|
os << llvm::format_hex_no_prefix(B.value(), 2, true);
|
|
}
|
|
os.flush();
|
|
|
|
return result;
|
|
}
|
|
|
|
void UUID::Dump(Stream *s) const { s->PutCString(GetAsString()); }
|
|
|
|
static inline int xdigit_to_int(char ch) {
|
|
ch = tolower(ch);
|
|
if (ch >= 'a' && ch <= 'f')
|
|
return 10 + ch - 'a';
|
|
return ch - '0';
|
|
}
|
|
|
|
llvm::StringRef
|
|
UUID::DecodeUUIDBytesFromString(llvm::StringRef p,
|
|
llvm::SmallVectorImpl<uint8_t> &uuid_bytes) {
|
|
uuid_bytes.clear();
|
|
while (p.size() >= 2) {
|
|
if (isxdigit(p[0]) && isxdigit(p[1])) {
|
|
int hi_nibble = xdigit_to_int(p[0]);
|
|
int lo_nibble = xdigit_to_int(p[1]);
|
|
// Translate the two hex nibble characters into a byte
|
|
uuid_bytes.push_back((hi_nibble << 4) + lo_nibble);
|
|
|
|
// Skip both hex digits
|
|
p = p.drop_front(2);
|
|
} else if (p.front() == '-') {
|
|
// Skip dashes
|
|
p = p.drop_front();
|
|
} else {
|
|
// UUID values can only consist of hex characters and '-' chars
|
|
break;
|
|
}
|
|
}
|
|
return p;
|
|
}
|
|
|
|
bool UUID::SetFromStringRef(llvm::StringRef str) {
|
|
llvm::StringRef p = str;
|
|
|
|
// Skip leading whitespace characters
|
|
p = p.ltrim();
|
|
|
|
llvm::SmallVector<uint8_t, 20> bytes;
|
|
llvm::StringRef rest = UUID::DecodeUUIDBytesFromString(p, bytes);
|
|
|
|
// Return false if we could not consume the entire string or if the parsed
|
|
// UUID is empty.
|
|
if (!rest.empty() || bytes.empty())
|
|
return false;
|
|
|
|
*this = fromData(bytes);
|
|
return true;
|
|
}
|
|
|
|
bool UUID::SetFromOptionalStringRef(llvm::StringRef str) {
|
|
bool result = SetFromStringRef(str);
|
|
if (result) {
|
|
if (llvm::all_of(m_bytes, [](uint8_t b) { return b == 0; }))
|
|
Clear();
|
|
}
|
|
|
|
return result;
|
|
}
|