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edm::Guid

edm::Guid Class Reference

Description:. More...

#include <POOLCore/Guid.h>

List of all members.

Public Member Functions

const Guid & fromString (const std::string &s)
 Automatic conversion to string representation.
 Guid (const Guid &c)
 Copy constructor.
 Guid (const std::string &s)
 Constructor for Guid from string.
 Guid (const char *s)
 Constructor for Guid from char*.
 Guid (bool assign)
 Standard constructor (With possible initialization).
 Guid ()
 Standard constructor (No initialization of data for performance reasons).
bool operator!= (const Guid &g) const
 Non-equality operator.
bool operator< (const Guid &g) const
 Smaller operator.
Guid & operator= (const Guid &g)
 Assignment operator.
bool operator== (const Guid &g) const
 Equality operator.
const std::string toString () const
 Automatic conversion from string reprentation.

Static Public Member Functions

static void create (Guid &guid)
 Create a new Guid.
static const Guid & null ()
 NULL-Guid: static class method.

Public Attributes

unsigned int Data1
unsigned short Data2
unsigned short Data3
unsigned char Data4 [8]

Detailed Description

Description:.

Encapsulation of a GUID/UUID/CLSID/IID data structure (128 bit number). Note: This class may not have a virual destructor

Author:
M.Frank Initial version using COM on WIN32

Zhen Xie Include DCE implementation for linux

Version:
1.1
Date:
03/09/2002

Definition at line 23 of file Guid.h.

Constructor & Destructor Documentation

edm::Guid::Guid (  )  [inline]

Standard constructor (No initialization of data for performance reasons).

Definition at line 31 of file Guid.h.

00031 {                                 }

edm::Guid::Guid ( bool  assign  )  [inline, explicit]

Standard constructor (With possible initialization).

Definition at line 33 of file Guid.h.

References create().

00033 { if ( assign ) create(*this);    }

edm::Guid::Guid ( const char *  s  )  [inline, explicit]

Constructor for Guid from char*.

Definition at line 35 of file Guid.h.

References fromString().

00035 { fromString(s);          }

edm::Guid::Guid ( const std::string &  s  )  [inline, explicit]

Constructor for Guid from string.

Definition at line 37 of file Guid.h.

References fromString().

00037 { fromString(s);          }

edm::Guid::Guid ( const Guid &  c  )  [inline]

Copy constructor.

Definition at line 39 of file Guid.h.

00039 { *this = c;              }

Member Function Documentation

void edm::Guid::create ( Guid &  guid  )  [static]

Create a new Guid.

Definition at line 31 of file Guid.cc.

References d1, d2, d3, Data1, Data2, Data3, Data4, and i.

Referenced by edm::createGlobalIdentifier(), and Guid().

00031                                 {
00032     uuid_t me_;
00033     ::uuid_generate_time(me_);
00034     unsigned int  *d1=(unsigned int*)me_;
00035     unsigned short *d2=(unsigned short*)(me_+4);
00036     unsigned short *d3=(unsigned short*)(me_+6);
00037     guid.Data1 = *d1;
00038     guid.Data2 = *d2;
00039     guid.Data3 = *d3;
00040     for (int i=0; i<8; i++){
00041             guid.Data4[i]=me_[i+8];
00042     }
00043   }

const Guid & edm::Guid::fromString ( const std::string &  s  ) 

Automatic conversion to string representation.

Definition at line 54 of file Guid.cc.

References d, Data1, Data2, Data3, Data4, and edm::fmt_Guid.

Referenced by Guid().

00054                                                          {
00055     // Note: This looks funny, but the specs for sscanf formats say
00056     //       that the space of a pointer in the ellipsis may only be
00057     //       integer or short. Hence one has to reserve a bit more space
00058     //       otherwise the stack gets corrupted.
00059     unsigned char d[8];
00060     ::sscanf( source.c_str(), fmt_Guid, &Data1, &Data2, &Data3, 
00061               &Data4[0], &Data4[1], &Data4[2], &Data4[3], &d[0], &d[1], &d[2], &d[3]);
00062     *(int*)&Data4[4] = *(int*)d;
00063     return *this;
00064   }

const Guid & edm::Guid::null (  )  [static]

NULL-Guid: static class method.

Definition at line 26 of file Guid.cc.

References edm::clid_null().

00026                            {
00027     return clid_null;
00028   }

bool edm::Guid::operator!= ( const Guid &  g  )  const [inline]

Non-equality operator.

Definition at line 68 of file Guid.h.

References operator==().

00068                                            {
00069       return !(this->operator==(g));
00070     }

bool edm::Guid::operator< ( const Guid &  g  )  const

Smaller operator.

Definition at line 66 of file Guid.cc.

References Data1.

00066                                               {
00067     return ::memcmp(&g.Data1, &Data1, 16) < 0;
00068   }

Guid& edm::Guid::operator= ( const Guid &  g  )  [inline]

Assignment operator.

Definition at line 41 of file Guid.h.

References Data1, Data2, Data3, Data4, and p.

00041                                       {
00042       if ( this != &g )  {
00043         Data1 = g.Data1;
00044         Data2 = g.Data2;
00045         Data3 = g.Data3;
00046         unsigned int       *p = (unsigned int*)&Data4[0]; 
00047         const unsigned int *q = (const unsigned int*)&g.Data4[0];
00048         *(p+1) = *(q+1);
00049         *p     = *q;
00050       }
00051       return *this;
00052     }

bool edm::Guid::operator== ( const Guid &  g  )  const [inline]

Equality operator.

Definition at line 56 of file Guid.h.

References Data1, Data2, Data3, Data4, and p.

Referenced by operator!=().

00056                                            {
00057       if ( this != & g )  {
00058         if (Data1 != g.Data1 ) return false;
00059         if (Data2 != g.Data2 ) return false;
00060         if (Data3 != g.Data3 ) return false;
00061         const unsigned int *p = (const unsigned int*)&Data4[0], 
00062                             *q = (const unsigned int*)&g.Data4[0];
00063         return *p++ == *q++ && *p == *q;
00064       }
00065       return true;
00066     }

const std::string edm::Guid::toString (  )  const

Automatic conversion from string reprentation.

Definition at line 45 of file Guid.cc.

References Data1, Data2, Data3, Data4, and edm::fmt_Guid.

Referenced by edm::createGlobalIdentifier(), FUShmDQMOutputService::FUShmDQMOutputService(), and edm::FUShmOutputModule::FUShmOutputModule().

00045                                            {
00046     char text[128];
00047     ::sprintf(text, fmt_Guid,
00048               Data1, Data2, Data3, 
00049               Data4[0], Data4[1], Data4[2], Data4[3], 
00050               Data4[4], Data4[5], Data4[6], Data4[7]);
00051     return text;
00052   }

Member Data Documentation

unsigned int edm::Guid::Data1

Definition at line 25 of file Guid.h.

Referenced by create(), fromString(), operator<(), operator=(), operator==(), and toString().

unsigned short edm::Guid::Data2

Definition at line 26 of file Guid.h.

Referenced by create(), fromString(), operator=(), operator==(), and toString().

unsigned short edm::Guid::Data3

Definition at line 27 of file Guid.h.

Referenced by create(), fromString(), operator=(), operator==(), and toString().

unsigned char edm::Guid::Data4[8]

Definition at line 28 of file Guid.h.

Referenced by create(), fromString(), operator=(), operator==(), and toString().

The documentation for this class was generated from the following files:
Generated on Tue Jun 9 18:41:03 2009 for CMSSW by  doxygen 1.5.4