228 lines
7.0 KiB
C++
228 lines
7.0 KiB
C++
//===-- UUID.cpp ------------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "lldb/Utility/UUID.h"
|
|
|
|
// Other libraries and framework includes
|
|
// Project includes
|
|
#include "lldb/Utility/Stream.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
|
|
// C Includes
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
namespace lldb_private {
|
|
|
|
UUID::UUID() : m_num_uuid_bytes(16) { ::memset(m_uuid, 0, sizeof(m_uuid)); }
|
|
|
|
UUID::UUID(const UUID &rhs) {
|
|
m_num_uuid_bytes = rhs.m_num_uuid_bytes;
|
|
::memcpy(m_uuid, rhs.m_uuid, sizeof(m_uuid));
|
|
}
|
|
|
|
UUID::UUID(const void *uuid_bytes, uint32_t num_uuid_bytes) {
|
|
SetBytes(uuid_bytes, num_uuid_bytes);
|
|
}
|
|
|
|
const UUID &UUID::operator=(const UUID &rhs) {
|
|
if (this != &rhs) {
|
|
m_num_uuid_bytes = rhs.m_num_uuid_bytes;
|
|
::memcpy(m_uuid, rhs.m_uuid, sizeof(m_uuid));
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
UUID::~UUID() {}
|
|
|
|
void UUID::Clear() {
|
|
m_num_uuid_bytes = 16;
|
|
::memset(m_uuid, 0, sizeof(m_uuid));
|
|
}
|
|
|
|
const void *UUID::GetBytes() const { return m_uuid; }
|
|
|
|
std::string UUID::GetAsString(const char *separator) const {
|
|
std::string result;
|
|
char buf[256];
|
|
if (!separator)
|
|
separator = "-";
|
|
const uint8_t *u = (const uint8_t *)GetBytes();
|
|
if (sizeof(buf) >
|
|
(size_t)snprintf(buf, sizeof(buf), "%2.2X%2.2X%2.2X%2.2X%s%2.2X%2.2X%s%2."
|
|
"2X%2.2X%s%2.2X%2.2X%s%2.2X%2.2X%2.2X%"
|
|
"2.2X%2.2X%2.2X",
|
|
u[0], u[1], u[2], u[3], separator, u[4], u[5], separator,
|
|
u[6], u[7], separator, u[8], u[9], separator, u[10],
|
|
u[11], u[12], u[13], u[14], u[15])) {
|
|
result.append(buf);
|
|
if (m_num_uuid_bytes == 20) {
|
|
if (sizeof(buf) > (size_t)snprintf(buf, sizeof(buf),
|
|
"%s%2.2X%2.2X%2.2X%2.2X", separator,
|
|
u[16], u[17], u[18], u[19]))
|
|
result.append(buf);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void UUID::Dump(Stream *s) const {
|
|
const uint8_t *u = (const uint8_t *)GetBytes();
|
|
s->Printf("%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%"
|
|
"2.2X%2.2X%2.2X%2.2X",
|
|
u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7], u[8], u[9], u[10],
|
|
u[11], u[12], u[13], u[14], u[15]);
|
|
if (m_num_uuid_bytes == 20) {
|
|
s->Printf("-%2.2X%2.2X%2.2X%2.2X", u[16], u[17], u[18], u[19]);
|
|
}
|
|
}
|
|
|
|
bool UUID::SetBytes(const void *uuid_bytes, uint32_t num_uuid_bytes) {
|
|
if (uuid_bytes) {
|
|
switch (num_uuid_bytes) {
|
|
case 20:
|
|
m_num_uuid_bytes = 20;
|
|
break;
|
|
case 16:
|
|
m_num_uuid_bytes = 16;
|
|
m_uuid[16] = m_uuid[17] = m_uuid[18] = m_uuid[19] = 0;
|
|
break;
|
|
default:
|
|
// Unsupported UUID byte size
|
|
m_num_uuid_bytes = 0;
|
|
break;
|
|
}
|
|
|
|
if (m_num_uuid_bytes > 0) {
|
|
::memcpy(m_uuid, uuid_bytes, m_num_uuid_bytes);
|
|
return true;
|
|
}
|
|
}
|
|
::memset(m_uuid, 0, sizeof(m_uuid));
|
|
return false;
|
|
}
|
|
|
|
size_t UUID::GetByteSize() { return m_num_uuid_bytes; }
|
|
|
|
bool UUID::IsValid() const {
|
|
return m_uuid[0] || m_uuid[1] || m_uuid[2] || m_uuid[3] || m_uuid[4] ||
|
|
m_uuid[5] || m_uuid[6] || m_uuid[7] || m_uuid[8] || m_uuid[9] ||
|
|
m_uuid[10] || m_uuid[11] || m_uuid[12] || m_uuid[13] || m_uuid[14] ||
|
|
m_uuid[15] || m_uuid[16] || m_uuid[17] || m_uuid[18] || m_uuid[19];
|
|
}
|
|
|
|
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,
|
|
ValueType &uuid_bytes,
|
|
uint32_t &bytes_decoded,
|
|
uint32_t num_uuid_bytes) {
|
|
::memset(uuid_bytes, 0, sizeof(uuid_bytes));
|
|
size_t uuid_byte_idx = 0;
|
|
while (!p.empty()) {
|
|
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[uuid_byte_idx] = (hi_nibble << 4) + lo_nibble;
|
|
|
|
// Skip both hex digits
|
|
p = p.drop_front(2);
|
|
|
|
// Increment the byte that we are decoding within the UUID value
|
|
// and break out if we are done
|
|
if (++uuid_byte_idx == num_uuid_bytes)
|
|
break;
|
|
} else if (p.front() == '-') {
|
|
// Skip dashes
|
|
p = p.drop_front();
|
|
} else {
|
|
// UUID values can only consist of hex characters and '-' chars
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Clear trailing bytes to 0.
|
|
for (uint32_t i = uuid_byte_idx; i < sizeof(ValueType); i++)
|
|
uuid_bytes[i] = 0;
|
|
bytes_decoded = uuid_byte_idx;
|
|
return p;
|
|
}
|
|
|
|
size_t UUID::SetFromStringRef(llvm::StringRef str, uint32_t num_uuid_bytes) {
|
|
llvm::StringRef p = str;
|
|
|
|
// Skip leading whitespace characters
|
|
p = p.ltrim();
|
|
|
|
uint32_t bytes_decoded = 0;
|
|
llvm::StringRef rest =
|
|
UUID::DecodeUUIDBytesFromString(p, m_uuid, bytes_decoded, num_uuid_bytes);
|
|
|
|
// If we successfully decoded a UUID, return the amount of characters that
|
|
// were consumed
|
|
if (bytes_decoded == num_uuid_bytes) {
|
|
m_num_uuid_bytes = num_uuid_bytes;
|
|
return str.size() - rest.size();
|
|
}
|
|
|
|
// Else return zero to indicate we were not able to parse a UUID value
|
|
return 0;
|
|
}
|
|
|
|
size_t UUID::SetFromCString(const char *cstr, uint32_t num_uuid_bytes) {
|
|
if (cstr == NULL)
|
|
return 0;
|
|
|
|
return SetFromStringRef(cstr, num_uuid_bytes);
|
|
}
|
|
}
|
|
|
|
bool lldb_private::operator==(const lldb_private::UUID &lhs,
|
|
const lldb_private::UUID &rhs) {
|
|
return ::memcmp(lhs.GetBytes(), rhs.GetBytes(),
|
|
sizeof(lldb_private::UUID::ValueType)) == 0;
|
|
}
|
|
|
|
bool lldb_private::operator!=(const lldb_private::UUID &lhs,
|
|
const lldb_private::UUID &rhs) {
|
|
return ::memcmp(lhs.GetBytes(), rhs.GetBytes(),
|
|
sizeof(lldb_private::UUID::ValueType)) != 0;
|
|
}
|
|
|
|
bool lldb_private::operator<(const lldb_private::UUID &lhs,
|
|
const lldb_private::UUID &rhs) {
|
|
return ::memcmp(lhs.GetBytes(), rhs.GetBytes(),
|
|
sizeof(lldb_private::UUID::ValueType)) < 0;
|
|
}
|
|
|
|
bool lldb_private::operator<=(const lldb_private::UUID &lhs,
|
|
const lldb_private::UUID &rhs) {
|
|
return ::memcmp(lhs.GetBytes(), rhs.GetBytes(),
|
|
sizeof(lldb_private::UUID::ValueType)) <= 0;
|
|
}
|
|
|
|
bool lldb_private::operator>(const lldb_private::UUID &lhs,
|
|
const lldb_private::UUID &rhs) {
|
|
return ::memcmp(lhs.GetBytes(), rhs.GetBytes(),
|
|
sizeof(lldb_private::UUID::ValueType)) > 0;
|
|
}
|
|
|
|
bool lldb_private::operator>=(const lldb_private::UUID &lhs,
|
|
const lldb_private::UUID &rhs) {
|
|
return ::memcmp(lhs.GetBytes(), rhs.GetBytes(),
|
|
sizeof(lldb_private::UUID::ValueType)) >= 0;
|
|
}
|