| //===-- 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/Core/UUID.h" |
| // C Includes |
| #include <string.h> |
| #include <stdio.h> |
| #include <ctype.h> |
| |
| // C++ Includes |
| #include <string> |
| |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/Core/Stream.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'; |
| } |
| |
| size_t |
| UUID::DecodeUUIDBytesFromCString (const char *p, ValueType &uuid_bytes, const char **end, uint32_t num_uuid_bytes) |
| { |
| size_t uuid_byte_idx = 0; |
| if (p) |
| { |
| while (*p) |
| { |
| 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 += 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 == '-') |
| { |
| // Skip dashes |
| p++; |
| } |
| else |
| { |
| // UUID values can only consist of hex characters and '-' chars |
| break; |
| } |
| } |
| } |
| if (end) |
| *end = p; |
| // Clear trailing bytes to 0. |
| for (uint32_t i = uuid_byte_idx; i < sizeof(ValueType); i++) |
| uuid_bytes[i] = 0; |
| return uuid_byte_idx; |
| } |
| size_t |
| UUID::SetFromCString (const char *cstr, uint32_t num_uuid_bytes) |
| { |
| if (cstr == NULL) |
| return 0; |
| |
| const char *p = cstr; |
| |
| // Skip leading whitespace characters |
| while (isspace(*p)) |
| ++p; |
| |
| const size_t uuid_byte_idx = UUID::DecodeUUIDBytesFromCString (p, m_uuid, &p, num_uuid_bytes); |
| |
| // If we successfully decoded a UUID, return the amount of characters that |
| // were consumed |
| if (uuid_byte_idx == num_uuid_bytes) |
| return p - cstr; |
| |
| // Else return zero to indicate we were not able to parse a UUID value |
| return 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; |
| } |
| |
| 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; |
| } |