1 /*=========================================================================
4 Module: $RCSfile: gdcmUtil.cxx,v $
6 Date: $Date: 2005/01/08 15:55:57 $
7 Version: $Revision: 1.84 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
20 #include "gdcmDebug.h"
23 // For GetCurrentDate, GetCurrentTime
25 #include <sys/types.h>
28 #include <stdarg.h> //only included in implementation file
29 #include <stdio.h> //only included in implementation file
32 #include <winsock.h> // for gethostname & gethostbyname
36 #include <unistd.h> // for gethostname
37 #include <netdb.h> // for gethostbyname
45 * \brief Provide a better 'c++' approach for sprintf
46 * For example c code is:
47 * sprintf(trash, "%04x|%04x", group , element);
50 * std::ostringstream buf;
51 * buf << std::right << std::setw(4) << std::setfill('0') << std::hex
52 * << group << "|" << std::right << std::setw(4) << std::setfill('0')
53 * << std::hex << element;
57 std::string Util::Format(const char *format, ...)
61 va_start(args, format);
62 vsprintf(buffer, format, args); //might be a security flaw
63 va_end(args); // Each invocation of va_start should be matched
64 // by a corresponding invocation of va_end
65 // args is then 'undefined'
72 * \brief Because not available in C++ (?)
74 void Util::Tokenize (const std::string &str,
75 std::vector<std::string> &tokens,
76 const std::string& delimiters)
78 std::string::size_type lastPos = str.find_first_not_of(delimiters,0);
79 std::string::size_type pos = str.find_first_of (delimiters,lastPos);
80 while (std::string::npos != pos || std::string::npos != lastPos)
82 tokens.push_back(str.substr(lastPos, pos - lastPos));
83 lastPos = str.find_first_not_of(delimiters, pos);
84 pos = str.find_first_of (delimiters, lastPos);
90 * \brief Because not available in C++ (?)
91 * Counts the number of occurences of a substring within a string
94 int Util::CountSubstring (const std::string &str,
95 const std::string &subStr)
97 int count = 0; // counts how many times it appears
98 std::string::size_type x = 0; // The index position in the string
102 x = str.find(subStr,x); // Find the substring
103 if (x != std::string::npos) // If present
105 count++; // increase the count
106 x += subStr.length(); // Skip this word
109 while (x != std::string::npos); // Carry on until not present
116 * \brief Weed out a string from the non-printable characters (in order
117 * to avoid corrupting the terminal of invocation when printing)
118 * @param s string to remove non printable characters from
120 std::string Util::CreateCleanString(std::string const &s)
124 for(unsigned int i=0; i<str.size(); i++)
126 if(!isprint((unsigned char)str[i]))
134 if(!isprint((unsigned char)s[str.size()-1]))
136 if(s[str.size()-1] == 0)
138 str[str.size()-1] = ' ';
148 * \brief Add a SEPARATOR to the end of the name is necessary
149 * @param pathname file/directory name to normalize
151 std::string Util::NormalizePath(std::string const &pathname)
153 const char SEPARATOR_X = '/';
154 const char SEPARATOR_WIN = '\\';
155 const std::string SEPARATOR = "/";
156 std::string name = pathname;
157 int size = name.size();
159 if( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
168 * \brief Get the (directory) path from a full path file name
169 * @param fullName file/directory name to extract Path from
171 std::string Util::GetPath(std::string const &fullName)
173 std::string res = fullName;
174 int pos1 = res.rfind("/");
175 int pos2 = res.rfind("\\");
190 * \brief Get the (last) name of a full path file name
191 * @param fullName file/directory name to extract end name from
193 std::string Util::GetName(std::string const &fullName)
195 std::string filename = fullName;
197 std::string::size_type slash_pos = filename.rfind("/");
198 std::string::size_type backslash_pos = filename.rfind("\\");
199 slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos;
200 if(slash_pos != std::string::npos)
202 return filename.substr(slash_pos + 1);
212 * \brief Get the current date of the system in a dicom string
214 std::string Util::GetCurrentDate()
219 strftime(tmp,512,"%Y%m%d", localtime(&tloc) );
225 * \brief Get the current time of the system in a dicom string
227 std::string Util::GetCurrentTime()
232 strftime(tmp,512,"%H%M%S", localtime(&tloc) );
237 * \brief Create a /DICOM/ string:
238 * It should a of even length (no odd length ever)
239 * It can contain as many (if you are reading this from your
240 * editor the following character is is backslash followed by zero
241 * that needed to be escaped with an extra backslash for doxygen) \\0
244 std::string Util::DicomString(const char *s, size_t l)
246 std::string r(s, s+l);
247 gdcmAssertMacro( !(r.size() % 2) ); // == basically 'l' is even
253 * \brief Create a /DICOM/ string:
254 * It should a of even lenght (no odd length ever)
255 * It can contain as many (if you are reading this from your
256 * editor the following character is is backslash followed by zero
257 * that needed to be escaped with an extra backslash for doxygen) \\0
259 * This function is similar to DicomString(const char*),
260 * except it doesn't take a lenght.
261 * It only pad with a null character if length is odd
263 std::string Util::DicomString(const char *s)
265 size_t l = strlen(s);
270 std::string r(s, s+l);
271 gdcmAssertMacro( !(r.size() % 2) );
277 * \brief Safely compare two Dicom String:
278 * - Both string should be of even lenght
279 * - We allow padding of even lenght string by either a null
280 * character of a space
282 bool Util::DicomStringEqual(const std::string &s1, const char *s2)
284 // s2 is the string from the DICOM reference: 'MONOCHROME1'
285 std::string s1_even = s1; //Never change input parameter
286 std::string s2_even = DicomString( s2 );
287 if( s1_even[s1_even.size()-1] == ' ')
289 s1_even[s1_even.size()-1] = '\0'; //replace space character by null
291 return s1_even == s2_even;
298 * \brief tells us if the processor we are working with is BigEndian or not
300 bool Util::IsCurrentProcessorBigEndian()
303 uint8_t bigEndianRepr[4] = { 0x00, 0x00, 0x00, 0x01 };
304 int res = memcmp(reinterpret_cast<const void*>(&intVal),
305 reinterpret_cast<const void*>(bigEndianRepr), 4);
320 typedef BOOL(WINAPI * pSnmpExtensionInit) (
321 IN DWORD dwTimeZeroReference,
322 OUT HANDLE * hPollForTrapEvent,
323 OUT AsnObjectIdentifier * supportedView);
325 typedef BOOL(WINAPI * pSnmpExtensionTrap) (
326 OUT AsnObjectIdentifier * enterprise,
327 OUT AsnInteger * genericTrap,
328 OUT AsnInteger * specificTrap,
329 OUT AsnTimeticks * timeStamp,
330 OUT RFC1157VarBindList * variableBindings);
332 typedef BOOL(WINAPI * pSnmpExtensionQuery) (
334 IN OUT RFC1157VarBindList * variableBindings,
335 OUT AsnInteger * errorStatus,
336 OUT AsnInteger * errorIndex);
338 typedef BOOL(WINAPI * pSnmpExtensionInitEx) (
339 OUT AsnObjectIdentifier * supportedView);
341 #include <strings.h> //for bzero on unix
345 #include <sys/ioctl.h>
346 #include <sys/types.h>
347 #include <sys/socket.h>
348 #include <netinet/in.h>
349 #include <linux/if.h>
357 #include <sys/ndd_var.h>
358 #include <sys/kinfo.h>
363 #include <CoreFoundation/CoreFoundation.h>
365 #include <IOKit/IOKitLib.h>
366 #include <IOKit/network/IOEthernetInterface.h>
367 #include <IOKit/network/IONetworkInterface.h>
368 #include <IOKit/network/IOEthernetController.h>
370 //static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices);
371 //static kern_return_t GetMACAddress(io_iterator_t intfIterator, UInt8 *MACAddress);
373 // Returns an iterator containing the primary (built-in) Ethernet interface. The caller is responsible for
374 // releasing the iterator after the caller is done with it.
375 static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices)
377 kern_return_t kernResult;
378 mach_port_t masterPort;
379 CFMutableDictionaryRef matchingDict;
380 CFMutableDictionaryRef propertyMatchDict;
382 // Retrieve the Mach port used to initiate communication with I/O Kit
383 kernResult = IOMasterPort(MACH_PORT_NULL, &masterPort);
384 if (KERN_SUCCESS != kernResult)
386 printf("IOMasterPort returned %d\n", kernResult);
390 // Ethernet interfaces are instances of class kIOEthernetInterfaceClass.
391 // IOServiceMatching is a convenience function to create a dictionary with the key kIOProviderClassKey and
392 // the specified value.
393 matchingDict = IOServiceMatching(kIOEthernetInterfaceClass);
395 // Note that another option here would be:
396 // matchingDict = IOBSDMatching("en0");
398 if (NULL == matchingDict)
400 printf("IOServiceMatching returned a NULL dictionary.\n");
403 // Each IONetworkInterface object has a Boolean property with the key kIOPrimaryInterface. Only the
404 // primary (built-in) interface has this property set to TRUE.
406 // IOServiceGetMatchingServices uses the default matching criteria defined by IOService. This considers
407 // only the following properties plus any family-specific matching in this order of precedence
408 // (see IOService::passiveMatch):
410 // kIOProviderClassKey (IOServiceMatching)
411 // kIONameMatchKey (IOServiceNameMatching)
412 // kIOPropertyMatchKey
414 // kIOMatchedServiceCountKey
415 // family-specific matching
416 // kIOBSDNameKey (IOBSDNameMatching)
417 // kIOLocationMatchKey
419 // The IONetworkingFamily does not define any family-specific matching. This means that in
420 // order to have IOServiceGetMatchingServices consider the kIOPrimaryInterface property, we must
421 // add that property to a separate dictionary and then add that to our matching dictionary
422 // specifying kIOPropertyMatchKey.
424 propertyMatchDict = CFDictionaryCreateMutable( kCFAllocatorDefault, 0,
425 &kCFTypeDictionaryKeyCallBacks,
426 &kCFTypeDictionaryValueCallBacks);
428 if (NULL == propertyMatchDict)
430 printf("CFDictionaryCreateMutable returned a NULL dictionary.\n");
433 // Set the value in the dictionary of the property with the given key, or add the key
434 // to the dictionary if it doesn't exist. This call retains the value object passed in.
435 CFDictionarySetValue(propertyMatchDict, CFSTR(kIOPrimaryInterface), kCFBooleanTrue);
437 // Now add the dictionary containing the matching value for kIOPrimaryInterface to our main
438 // matching dictionary. This call will retain propertyMatchDict, so we can release our reference
439 // on propertyMatchDict after adding it to matchingDict.
440 CFDictionarySetValue(matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
441 CFRelease(propertyMatchDict);
445 // IOServiceGetMatchingServices retains the returned iterator, so release the iterator when we're done with it.
446 // IOServiceGetMatchingServices also consumes a reference on the matching dictionary so we don't need to release
447 // the dictionary explicitly.
448 kernResult = IOServiceGetMatchingServices(masterPort, matchingDict, matchingServices);
449 if (KERN_SUCCESS != kernResult)
451 printf("IOServiceGetMatchingServices returned %d\n", kernResult);
457 // Given an iterator across a set of Ethernet interfaces, return the MAC address of the last one.
458 // If no interfaces are found the MAC address is set to an empty string.
459 // In this sample the iterator should contain just the primary interface.
460 static kern_return_t GetMACAddress_MAC(io_iterator_t intfIterator, UInt8 *MACAddress)
462 io_object_t intfService;
463 io_object_t controllerService;
464 kern_return_t kernResult = KERN_FAILURE;
466 // Initialize the returned address
467 bzero(MACAddress, kIOEthernetAddressSize);
469 // IOIteratorNext retains the returned object, so release it when we're done with it.
470 while ( (intfService = IOIteratorNext(intfIterator)))
472 CFTypeRef MACAddressAsCFData;
474 // IONetworkControllers can't be found directly by the IOServiceGetMatchingServices call,
475 // since they are hardware nubs and do not participate in driver matching. In other words,
476 // registerService() is never called on them. So we've found the IONetworkInterface and will
477 // get its parent controller by asking for it specifically.
479 // IORegistryEntryGetParentEntry retains the returned object, so release it when we're done with it.
480 kernResult = IORegistryEntryGetParentEntry( intfService,
482 &controllerService );
484 if (KERN_SUCCESS != kernResult)
486 printf("IORegistryEntryGetParentEntry returned 0x%08x\n", kernResult);
489 // Retrieve the MAC address property from the I/O Registry in the form of a CFData
490 MACAddressAsCFData = IORegistryEntryCreateCFProperty( controllerService,
491 CFSTR(kIOMACAddress),
494 if (MACAddressAsCFData)
496 CFShow(MACAddressAsCFData); // for display purposes only; output goes to stderr
498 // Get the raw bytes of the MAC address from the CFData
499 CFDataGetBytes(MACAddressAsCFData, CFRangeMake(0, kIOEthernetAddressSize), MACAddress);
500 CFRelease(MACAddressAsCFData);
503 // Done with the parent Ethernet controller object so we release it.
504 (void) IOObjectRelease(controllerService);
507 // Done with the Ethernet interface object so we release it.
508 (void) IOObjectRelease(intfService);
515 long GetMacAddrSys ( u_char *addr)
519 if (WSAStartup(MAKEWORD(2, 0), &WinsockData) != 0) {
520 fprintf(stderr, "This program requires Winsock 2.x!\n");
525 pSnmpExtensionInit m_Init;
526 pSnmpExtensionInitEx m_InitEx;
527 pSnmpExtensionQuery m_Query;
528 pSnmpExtensionTrap m_Trap;
529 HANDLE PollForTrapEvent;
530 AsnObjectIdentifier SupportedView;
531 UINT OID_ifEntryType[] = {
532 1, 3, 6, 1, 2, 1, 2, 2, 1, 3
534 UINT OID_ifEntryNum[] = {
535 1, 3, 6, 1, 2, 1, 2, 1
537 UINT OID_ipMACEntAddr[] = {
538 1, 3, 6, 1, 2, 1, 2, 2, 1, 6
540 AsnObjectIdentifier MIB_ifMACEntAddr =
541 { sizeof(OID_ipMACEntAddr) / sizeof(UINT), OID_ipMACEntAddr };
542 AsnObjectIdentifier MIB_ifEntryType = {
543 sizeof(OID_ifEntryType) / sizeof(UINT), OID_ifEntryType
545 AsnObjectIdentifier MIB_ifEntryNum = {
546 sizeof(OID_ifEntryNum) / sizeof(UINT), OID_ifEntryNum
548 RFC1157VarBindList varBindList;
549 RFC1157VarBind varBind[2];
550 AsnInteger errorStatus;
551 AsnInteger errorIndex;
552 AsnObjectIdentifier MIB_NULL = {
564 /* Load the SNMP dll and get the addresses of the functions
566 m_hInst = LoadLibrary("inetmib1.dll");
567 if (m_hInst < (HINSTANCE) HINSTANCE_ERROR) {
572 (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit");
574 (pSnmpExtensionInitEx) GetProcAddress(m_hInst,
575 "SnmpExtensionInitEx");
577 (pSnmpExtensionQuery) GetProcAddress(m_hInst,
578 "SnmpExtensionQuery");
580 (pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap");
581 m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView);
583 /* Initialize the variable list to be retrieved by m_Query */
584 varBindList.list = varBind;
585 varBind[0].name = MIB_NULL;
586 varBind[1].name = MIB_NULL;
588 /* Copy in the OID to find the number of entries in the
590 varBindList.len = 1; /* Only retrieving one item */
591 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum);
593 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
595 printf("# of adapters in this system : %i\n",
596 varBind[0].value.asnValue.number); varBindList.len = 2;
598 /* Copy in the OID of ifType, the type of interface */
599 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
601 /* Copy in the OID of ifPhysAddress, the address */
602 SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
606 /* Submit the query. Responses will be loaded into varBindList.
607 We can expect this call to succeed a # of times corresponding
608 to the # of adapters reported to be in the system */
610 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
611 &errorIndex); if (!ret) ret = 1;
614 /* Confirm that the proper type has been returned */
616 SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType,
617 MIB_ifEntryType.idLength); if (!ret) {
619 dtmp = varBind[0].value.asnValue.number;
620 printf("Interface #%i type : %i\n", j, dtmp);
622 /* Type 6 describes ethernet interfaces */
625 /* Confirm that we have an address here */
627 SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr,
628 MIB_ifMACEntAddr.idLength);
630 && (varBind[1].value.asnValue.address.stream != NULL)) {
632 (varBind[1].value.asnValue.address.stream[0] ==
634 && (varBind[1].value.asnValue.address.stream[1] ==
636 && (varBind[1].value.asnValue.address.stream[2] ==
638 && (varBind[1].value.asnValue.address.stream[3] ==
640 && (varBind[1].value.asnValue.address.stream[4] ==
643 /* Ignore all dial-up networking adapters */
644 printf("Interface #%i is a DUN adapter\n", j);
648 (varBind[1].value.asnValue.address.stream[0] ==
650 && (varBind[1].value.asnValue.address.stream[1] ==
652 && (varBind[1].value.asnValue.address.stream[2] ==
654 && (varBind[1].value.asnValue.address.stream[3] ==
656 && (varBind[1].value.asnValue.address.stream[4] ==
658 && (varBind[1].value.asnValue.address.stream[5] ==
661 /* Ignore NULL addresses returned by other network
663 printf("Interface #%i is a NULL address\n", j);
666 //sprintf((char*)addr, "%02x%02x%02x%02x%02x%02x",
667 // varBind[1].value.asnValue.address.stream[0],
668 // varBind[1].value.asnValue.address.stream[1],
669 // varBind[1].value.asnValue.address.stream[2],
670 // varBind[1].value.asnValue.address.stream[3],
671 // varBind[1].value.asnValue.address.stream[4],
672 // varBind[1].value.asnValue.address.stream[5]);
673 memcpy( addr, varBind[1].value.asnValue.address.stream, 6);
674 //printf("MAC Address of interface #%i: %s\n", j, addr);
678 } while (!ret); /* Stop only on an error. An error will occur
679 when we go exhaust the list of interfaces to
683 /* Free the bindings */
684 SNMP_FreeVarBind(&varBind[0]);
685 SNMP_FreeVarBind(&varBind[1]);
689 /* implementation for Linux */
690 // FreeBSD might be similar ??
699 s = socket(AF_INET, SOCK_DGRAM, 0);
704 ifc.ifc_len = sizeof(buf);
706 ioctl(s, SIOCGIFCONF, &ifc);
709 for (i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; IFR++) {
711 strcpy(ifr.ifr_name, IFR->ifr_name);
712 if (ioctl(s, SIOCGIFFLAGS, &ifr) == 0) {
713 if (! (ifr.ifr_flags & IFF_LOOPBACK)) {
714 if (ioctl(s, SIOCGIFHWADDR, &ifr) == 0) {
724 bcopy( ifr.ifr_hwaddr.sa_data, addr, 6);
732 /* implementation for HP-UX */
735 #define LAN_DEV0 "/dev/lan0"
738 struct fis iocnt_block;
740 char net_buf[sizeof(LAN_DEV0)+1];
743 (void)sprintf(net_buf, "%s", LAN_DEV0);
744 p = net_buf + strlen(net_buf) - 1;
747 * Get 802.3 address from card by opening the driver and interrogating it.
749 for (i = 0; i < 10; i++, (*p)++) {
750 if ((fd = open (net_buf, O_RDONLY)) != -1) {
751 iocnt_block.reqtype = LOCAL_ADDRESS;
752 ioctl (fd, NETSTAT, &iocnt_block);
755 if (iocnt_block.vtype == 6)
760 if (fd == -1 || iocnt_block.vtype != 6) {
764 bcopy( &iocnt_block.value.s[0], addr, 6);
769 /* implementation for AIX */
773 struct kinfo_ndd *nddp;
775 size = getkerninfo(KINFO_NDD, 0, 0, 0);
779 nddp = (struct kinfo_ndd *)malloc(size);
784 if (getkerninfo(KINFO_NDD, nddp, &size, 0) < 0) {
788 bcopy(nddp->ndd_addr, addr, 6);
794 kern_return_t kernResult = KERN_SUCCESS; // on PowerPC this is an int (4 bytes)
796 * error number layout as follows (see mach/error.h and IOKit/IOReturn.h):
799 * | system(6) | subsystem(12) | code(14) |
802 io_iterator_t intfIterator;
803 UInt8 MACAddress[ kIOEthernetAddressSize ];
805 kernResult = FindEthernetInterfaces(&intfIterator);
807 if (KERN_SUCCESS != kernResult)
809 printf("FindEthernetInterfaces returned 0x%08x\n", kernResult);
812 kernResult = GetMACAddress_MAC(intfIterator, MACAddress);
814 if (KERN_SUCCESS != kernResult)
816 printf("GetMACAddress returned 0x%08x\n", kernResult);
820 (void) IOObjectRelease(intfIterator); // Release the iterator.
822 memcpy(addr, MACAddress, kIOEthernetAddressSize);
826 /* Not implemented platforms */
831 std::string Util::GetMACAddress()
833 // This is a rip from: http://cplus.kompf.de/macaddr.html for Linux, HPUX and AIX
834 // and http://tangentsoft.net/wskfaq/examples/src/snmpmac.cpp for windows version
839 stat = GetMacAddrSys( addr);
842 //printf( "MAC address = ");
843 for (int i=0; i<6; ++i)
845 //printf("%2.2x", addr[i]);
846 macaddr += Format("%2.2x", addr[i]);
853 //printf( "No MAC address !\n" );
860 * \brief Return the IP adress of the machine writting the DICOM image
862 std::string Util::GetIPAddress()
864 // This is a rip from http://www.codeguru.com/Cpp/I-N/internet/network/article.php/c3445/
865 #ifndef HOST_NAME_MAX
866 // SUSv2 guarantees that `Host names are limited to 255 bytes'.
867 // POSIX 1003.1-2001 guarantees that `Host names (not including the
868 // terminating NUL) are limited to HOST_NAME_MAX bytes'.
869 # define HOST_NAME_MAX 255
870 // In this case we should maybe check the string was not truncated.
871 // But I don't known how to check that...
872 #if defined(_MSC_VER) || defined(__BORLANDC__)
873 // with WinSock DLL we need to initialise the WinSock before using gethostname
874 WORD wVersionRequested = MAKEWORD(1,0);
876 int err = WSAStartup(wVersionRequested,&WSAData);
878 /* Tell the user that we could not find a usable */
885 #endif //HOST_NAME_MAX
888 char szHostName[HOST_NAME_MAX+1];
889 int r = gethostname(szHostName, HOST_NAME_MAX);
894 struct hostent *pHost = gethostbyname(szHostName);
896 for( int i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
898 for( int j = 0; j<pHost->h_length; j++ )
900 if( j > 0 ) str += ".";
902 str += Util::Format("%u",
903 (unsigned int)((unsigned char*)pHost->h_addr_list[i])[j]);
905 // str now contains one local IP address
907 #if defined(_MSC_VER) || defined(__BORLANDC__)
913 // If an error occur r == -1
914 // Most of the time it will return 127.0.0.1...
920 * \brief Creates a new UID. As stipulate in the DICOM ref
921 * each time a DICOM image is create it should have
922 * a unique identifier (URI)
924 std::string Util::CreateUniqueUID(const std::string &root)
926 // The code works as follow:
927 // echo "gdcm" | od -b
928 // 0000000 147 144 143 155 012
929 // Therefore we return
930 // radical + 147.144.143.155 + IP + time()
931 std::string radical = root;
932 if( !root.size() ) //anything better ?
934 radical = "0.0."; // Is this really usefull ?
937 // A root was specified use it to forge our new UID:
938 radical += "147.144.143.155"; // gdcm
940 radical += Util::GetIPAddress();
942 radical += Util::GetCurrentDate();
944 radical += Util::GetCurrentTime();
950 std::ostream &binary_write(std::ostream &os, const T &val)
952 return os.write(reinterpret_cast<const char*>(&val), sizeof val);
955 std::ostream &binary_write(std::ostream &os, const uint16_t &val)
957 #ifdef GDCM_WORDS_BIGENDIAN
959 swap = ((( val << 8 ) & 0x0ff00 ) | (( val >> 8 ) & 0x00ff ) );
960 return os.write(reinterpret_cast<const char*>(&swap), 2);
962 return os.write(reinterpret_cast<const char*>(&val), 2);
963 #endif //GDCM_WORDS_BIGENDIAN
966 std::ostream &binary_write(std::ostream &os, const uint32_t &val)
968 #ifdef GDCM_WORDS_BIGENDIAN
970 swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) |
971 ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) );
972 return os.write(reinterpret_cast<const char*>(&swap), 4);
974 return os.write(reinterpret_cast<const char*>(&val), 4);
975 #endif //GDCM_WORDS_BIGENDIAN
978 std::ostream &binary_write(std::ostream &os, const char *val)
980 return os.write(val, strlen(val));
983 std::ostream &binary_write(std::ostream &os, std::string const &val)
985 return os.write(val.c_str(), val.size());
988 } // end namespace gdcm