1 /*=========================================================================
4 Module: $RCSfile: gdcmUtil.cxx,v $
6 Date: $Date: 2005/02/14 14:51:10 $
7 Version: $Revision: 1.142 $
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 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__)
29 #include <sys/timeb.h>
34 #include <stdarg.h> //only included in implementation file
35 #include <stdio.h> //only included in implementation file
37 #if defined(_MSC_VER) || defined(__MINGW32__)
38 #include <winsock.h> // for gethostname and gethostbyname
42 #include <unistd.h> // for gethostname
43 #include <netdb.h> // for gethostbyname
55 #include <sys/types.h>
58 #ifdef CMAKE_HAVE_SYS_IOCTL_H
59 #include <sys/ioctl.h> // For SIOCGIFCONF on Linux
61 #ifdef CMAKE_HAVE_SYS_SOCKET_H
62 #include <sys/socket.h>
64 #ifdef CMAKE_HAVE_SYS_SOCKIO_H
65 #include <sys/sockio.h> // For SIOCGIFCONF on SunOS
67 #ifdef CMAKE_HAVE_NET_IF_H
70 #ifdef CMAKE_HAVE_NETINET_IN_H
71 #include <netinet/in.h> //For IPPROTO_IP
73 #ifdef CMAKE_HAVE_NET_IF_DL_H
74 #include <net/if_dl.h>
76 #if defined(CMAKE_HAVE_NET_IF_ARP_H) && defined(__sun)
77 // This is absolutely necessary on SunOS
78 #include <net/if_arp.h>
81 // For GetCurrentThreadID()
83 #include <sys/types.h>
84 #include <linux/unistd.h>
92 //-------------------------------------------------------------------------
93 const std::string Util::GDCM_UID = "1.2.826.0.1.3680043.2.1143";
94 std::string Util::RootUID = GDCM_UID;
96 //-------------------------------------------------------------------------
99 * \brief Provide a better 'c++' approach for sprintf
100 * For example c code is:
101 * char result[200]; // hope 200 is enough
102 * sprintf(result, "%04x|%04x", group , elem);
105 * std::ostringstream buf;
106 * buf << std::right << std::setw(4) << std::setfill('0') << std::hex
107 * << group << "|" << std::right << std::setw(4) << std::setfill('0')
108 * << std::hex << elem;
113 * result = gdcm::Util::Format("%04x|%04x", group , elem);
115 std::string Util::Format(const char *format, ...)
119 va_start(args, format);
120 vsprintf(buffer, format, args); //might be a security flaw
121 va_end(args); // Each invocation of va_start should be matched
122 // by a corresponding invocation of va_end
123 // args is then 'undefined'
129 * \brief Because not available in C++ (?)
130 * @param str string to check
131 * @param tokens std::vector to receive the tokenized substrings
132 * @param delimiters string containing the character delimitors
135 void Util::Tokenize (const std::string &str,
136 std::vector<std::string> &tokens,
137 const std::string &delimiters)
139 std::string::size_type lastPos = str.find_first_not_of(delimiters,0);
140 std::string::size_type pos = str.find_first_of (delimiters,lastPos);
141 while (std::string::npos != pos || std::string::npos != lastPos)
143 tokens.push_back(str.substr(lastPos, pos - lastPos));
144 lastPos = str.find_first_not_of(delimiters, pos);
145 pos = str.find_first_of (delimiters, lastPos);
150 * \brief Because not available in C++ (?)
151 * Counts the number of occurences of a substring within a string
152 * @param str string to check
153 * @param subStr substring to count
156 int Util::CountSubstring (const std::string &str,
157 const std::string &subStr)
159 int count = 0; // counts how many times it appears
160 std::string::size_type x = 0; // The index position in the string
164 x = str.find(subStr,x); // Find the substring
165 if (x != std::string::npos) // If present
167 count++; // increase the count
168 x += subStr.length(); // Skip this word
171 while (x != std::string::npos);// Carry on until not present
177 * \brief Weed out a string from the non-printable characters (in order
178 * to avoid corrupting the terminal of invocation when printing)
179 * @param s string to remove non printable characters from
181 std::string Util::CreateCleanString(std::string const &s)
185 for(unsigned int i=0; i<str.size(); i++)
187 if(!isprint((unsigned char)str[i]))
195 if(!isprint((unsigned char)s[str.size()-1]))
197 if(s[str.size()-1] == 0)
199 str[str.size()-1] = ' ';
208 * \brief Add a SEPARATOR to the end of the name is necessary
209 * @param pathname file/directory name to normalize
211 std::string Util::NormalizePath(std::string const &pathname)
213 const char SEPARATOR_X = '/';
214 const char SEPARATOR_WIN = '\\';
215 const std::string SEPARATOR = "/";
216 std::string name = pathname;
217 int size = name.size();
219 if( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
227 * \brief Get the (directory) path from a full path file name
228 * @param fullName file/directory name to extract Path from
230 std::string Util::GetPath(std::string const &fullName)
232 std::string res = fullName;
233 int pos1 = res.rfind("/");
234 int pos2 = res.rfind("\\");
248 * \brief Get the (last) name of a full path file name
249 * @param fullName file/directory name to extract end name from
251 std::string Util::GetName(std::string const &fullName)
253 std::string filename = fullName;
255 std::string::size_type slash_pos = filename.rfind("/");
256 std::string::size_type backslash_pos = filename.rfind("\\");
257 slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos;
258 if(slash_pos != std::string::npos)
260 return filename.substr(slash_pos + 1);
269 * \brief Get the current date of the system in a dicom string
271 std::string Util::GetCurrentDate()
276 strftime(tmp,512,"%Y%m%d", localtime(&tloc) );
281 * \brief Get the current time of the system in a dicom string
283 std::string Util::GetCurrentTime()
288 strftime(tmp,512,"%H%M%S", localtime(&tloc) );
293 * \brief Get both the date and time at the same time to avoid problem
294 * around midnight where two call could be before and after midnight
296 std::string Util::GetCurrentDateTime()
302 // We need implementation specific functions to obtain millisecond precision
303 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__)
307 milliseconds = tb.millitm;
310 gettimeofday (&tv, NULL);
312 // Compute milliseconds from microseconds.
313 milliseconds = tv.tv_usec / 1000;
315 // Obtain the time of day, and convert it to a tm struct.
316 struct tm *ptm = localtime (&timep);
317 // Format the date and time, down to a single second.
318 strftime (tmp, sizeof (tmp), "%Y%m%d%H%M%S", ptm);
322 r += Format("%03ld", milliseconds);
327 unsigned int Util::GetCurrentThreadID()
329 // FIXME the implementation is far from complete
330 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__)
331 return (unsigned int)GetCurrentThreadId();
335 // Doesn't work on fedora, but is in the man page...
336 //return (unsigned int)gettid();
339 return (unsigned int)thr_self();
341 //default implementation
346 unsigned int Util::GetCurrentProcessID()
348 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__)
349 // NOTE: There is also a _getpid()...
350 return (unsigned int)GetCurrentProcessId();
352 // get process identification, POSIX
353 return (unsigned int)getpid();
358 * \brief tells us if the processor we are working with is BigEndian or not
360 bool Util::IsCurrentProcessorBigEndian()
362 #if defined(GDCM_WORDS_BIGENDIAN)
370 * \brief Create a /DICOM/ string:
371 * It should a of even length (no odd length ever)
372 * It can contain as many (if you are reading this from your
373 * editor the following character is is backslash followed by zero
374 * that needed to be escaped with an extra backslash for doxygen) \\0
377 std::string Util::DicomString(const char *s, size_t l)
379 std::string r(s, s+l);
380 gdcmAssertMacro( !(r.size() % 2) ); // == basically 'l' is even
385 * \brief Create a /DICOM/ string:
386 * It should a of even length (no odd length ever)
387 * It can contain as many (if you are reading this from your
388 * editor the following character is is backslash followed by zero
389 * that needed to be escaped with an extra backslash for doxygen) \\0
391 * This function is similar to DicomString(const char*),
392 * except it doesn't take a length.
393 * It only pad with a null character if length is odd
395 std::string Util::DicomString(const char *s)
397 size_t l = strlen(s);
402 std::string r(s, s+l);
403 gdcmAssertMacro( !(r.size() % 2) );
408 * \brief Safely compare two Dicom String:
409 * - Both string should be of even length
410 * - We allow padding of even length string by either a null
411 * character of a space
413 bool Util::DicomStringEqual(const std::string &s1, const char *s2)
415 // s2 is the string from the DICOM reference: 'MONOCHROME1'
416 std::string s1_even = s1; //Never change input parameter
417 std::string s2_even = DicomString( s2 );
418 if( s1_even[s1_even.size()-1] == ' ')
420 s1_even[s1_even.size()-1] = '\0'; //replace space character by null
422 return s1_even == s2_even;
426 typedef BOOL(WINAPI * pSnmpExtensionInit) (
427 IN DWORD dwTimeZeroReference,
428 OUT HANDLE * hPollForTrapEvent,
429 OUT AsnObjectIdentifier * supportedView);
431 typedef BOOL(WINAPI * pSnmpExtensionTrap) (
432 OUT AsnObjectIdentifier * enterprise,
433 OUT AsnInteger * genericTrap,
434 OUT AsnInteger * specificTrap,
435 OUT AsnTimeticks * timeStamp,
436 OUT RFC1157VarBindList * variableBindings);
438 typedef BOOL(WINAPI * pSnmpExtensionQuery) (
440 IN OUT RFC1157VarBindList * variableBindings,
441 OUT AsnInteger * errorStatus,
442 OUT AsnInteger * errorIndex);
444 typedef BOOL(WINAPI * pSnmpExtensionInitEx) (
445 OUT AsnObjectIdentifier * supportedView);
448 /// \brief gets current M.A.C adress (for internal use only)
449 int GetMacAddrSys ( unsigned char *addr )
453 if (WSAStartup(MAKEWORD(2, 0), &WinsockData) != 0)
455 std::cerr << "This program requires Winsock 2.x!" << std::endl;
459 HANDLE PollForTrapEvent;
460 AsnObjectIdentifier SupportedView;
461 UINT OID_ifEntryType[] = { 1, 3, 6, 1, 2, 1, 2, 2, 1, 3 };
462 UINT OID_ifEntryNum[] = { 1, 3, 6, 1, 2, 1, 2, 1 };
463 UINT OID_ipMACEntAddr[] = { 1, 3, 6, 1, 2, 1, 2, 2, 1, 6 };
464 AsnObjectIdentifier MIB_ifMACEntAddr = {
465 sizeof(OID_ipMACEntAddr) / sizeof(UINT), OID_ipMACEntAddr };
466 AsnObjectIdentifier MIB_ifEntryType = {
467 sizeof(OID_ifEntryType) / sizeof(UINT), OID_ifEntryType };
468 AsnObjectIdentifier MIB_ifEntryNum = {
469 sizeof(OID_ifEntryNum) / sizeof(UINT), OID_ifEntryNum };
470 RFC1157VarBindList varBindList;
471 RFC1157VarBind varBind[2];
472 AsnInteger errorStatus;
473 AsnInteger errorIndex;
474 AsnObjectIdentifier MIB_NULL = { 0, 0 };
479 // Load the SNMP dll and get the addresses of the functions necessary
480 HINSTANCE m_hInst = LoadLibrary("inetmib1.dll");
481 if (m_hInst < (HINSTANCE) HINSTANCE_ERROR)
485 pSnmpExtensionInit m_Init =
486 (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit");
487 pSnmpExtensionQuery m_Query =
488 (pSnmpExtensionQuery) GetProcAddress(m_hInst, "SnmpExtensionQuery");
489 m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView);
491 /* Initialize the variable list to be retrieved by m_Query */
492 varBindList.list = varBind;
493 varBind[0].name = MIB_NULL;
494 varBind[1].name = MIB_NULL;
496 // Copy in the OID to find the number of entries in the
498 varBindList.len = 1; // Only retrieving one item
499 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum);
500 m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
502 // printf("# of adapters in this system : %i\n",
503 // varBind[0].value.asnValue.number);
506 // Copy in the OID of ifType, the type of interface
507 SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
509 // Copy in the OID of ifPhysAddress, the address
510 SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
514 // Submit the query. Responses will be loaded into varBindList.
515 // We can expect this call to succeed a # of times corresponding
516 // to the # of adapters reported to be in the system
517 ret = m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
525 // Confirm that the proper type has been returned
526 ret = SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType,
527 MIB_ifEntryType.idLength);
532 dtmp = varBind[0].value.asnValue.number;
534 // Type 6 describes ethernet interfaces
537 // Confirm that we have an address here
538 ret = SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr,
539 MIB_ifMACEntAddr.idLength);
540 if ( !ret && varBind[1].value.asnValue.address.stream != NULL )
542 if ( (varBind[1].value.asnValue.address.stream[0] == 0x44)
543 && (varBind[1].value.asnValue.address.stream[1] == 0x45)
544 && (varBind[1].value.asnValue.address.stream[2] == 0x53)
545 && (varBind[1].value.asnValue.address.stream[3] == 0x54)
546 && (varBind[1].value.asnValue.address.stream[4] == 0x00) )
548 // Ignore all dial-up networking adapters
549 std::cerr << "Interface #" << j << " is a DUN adapter\n";
552 if ( (varBind[1].value.asnValue.address.stream[0] == 0x00)
553 && (varBind[1].value.asnValue.address.stream[1] == 0x00)
554 && (varBind[1].value.asnValue.address.stream[2] == 0x00)
555 && (varBind[1].value.asnValue.address.stream[3] == 0x00)
556 && (varBind[1].value.asnValue.address.stream[4] == 0x00)
557 && (varBind[1].value.asnValue.address.stream[5] == 0x00) )
559 // Ignore NULL addresses returned by other network
561 std::cerr << "Interface #" << j << " is a NULL address\n";
564 memcpy( addr, varBind[1].value.asnValue.address.stream, 6);
571 SNMP_FreeVarBind(&varBind[0]);
572 SNMP_FreeVarBind(&varBind[1]);
574 #endif //Win32 version
577 // implementation for POSIX system
579 //The POSIX version is broken anyway on Solaris, plus would require full
581 struct arpreq parpreq;
582 struct sockaddr_in *psa;
583 struct hostent *phost;
584 char hostname[MAXHOSTNAMELEN];
588 if(gethostname(hostname, MAXHOSTNAMELEN) != 0)
590 perror("gethostname");
593 phost = gethostbyname(hostname);
594 paddrs = phost->h_addr_list;
596 sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
602 memset(&parpreq, 0, sizeof(struct arpreq));
603 psa = (struct sockaddr_in *) &parpreq.arp_pa;
605 memset(psa, 0, sizeof(struct sockaddr_in));
606 psa->sin_family = AF_INET;
607 memcpy(&psa->sin_addr, *paddrs, sizeof(struct in_addr));
609 status = ioctl(sock, SIOCGARP, &parpreq);
615 memcpy(addr, parpreq.arp_ha.sa_data, 6);
619 #ifdef CMAKE_HAVE_NET_IF_H
621 struct ifreq ifr, *ifrp;
626 #if defined(AF_LINK) && (!defined(SIOCGIFHWADDR) && !defined(SIOCGENADDR))
627 struct sockaddr_dl *sdlp;
631 // BSD 4.4 defines the size of an ifreq to be
632 // max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
633 // However, under earlier systems, sa_len isn't present, so the size is
634 // just sizeof(struct ifreq)
635 // We should investiage the use of SIZEOF_ADDR_IFREQ
639 #define max(a,b) ((a) > (b) ? (a) : (b))
641 #define ifreq_size(i) max(sizeof(struct ifreq),\
642 sizeof((i).ifr_name)+(i).ifr_addr.sa_len)
644 #define ifreq_size(i) sizeof(struct ifreq)
645 #endif // HAVE_SA_LEN
647 if( (sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0 )
651 memset(buf, 0, sizeof(buf));
652 ifc.ifc_len = sizeof(buf);
654 if (ioctl (sd, SIOCGIFCONF, (char *)&ifc) < 0)
660 for (i = 0; i < n; i+= ifreq_size(*ifrp) )
662 ifrp = (struct ifreq *)((char *) ifc.ifc_buf+i);
663 strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
665 if (ioctl(sd, SIOCGIFHWADDR, &ifr) < 0)
667 a = (unsigned char *) &ifr.ifr_hwaddr.sa_data;
670 // In theory this call should also work on Sun Solaris, but apparently
671 // SIOCGENADDR is not implemented properly thus the call
672 // ioctl(sd, SIOCGENADDR, &ifr) always returns errno=2
673 // (No such file or directory)
674 // Furthermore the DLAPI seems to require full root access
675 if (ioctl(sd, SIOCGENADDR, &ifr) < 0)
677 a = (unsigned char *) ifr.ifr_enaddr;
680 sdlp = (struct sockaddr_dl *) &ifrp->ifr_addr;
681 if ((sdlp->sdl_family != AF_LINK) || (sdlp->sdl_alen != 6))
683 a = (unsigned char *) &sdlp->sdl_data[sdlp->sdl_nlen];
685 perror("No way to access hardware");
689 #endif // SIOCGENADDR
690 #endif // SIOCGIFHWADDR
691 if (!a[0] && !a[1] && !a[2] && !a[3] && !a[4] && !a[5]) continue;
702 // Not implemented platforms
703 perror("There was a configuration problem on your plateform");
710 * \brief Mini function to return the last digit from a number express in base 256
711 * pre condition data contain an array of 6 unsigned char
712 * post condition carry contain the last digit
714 inline int getlastdigit(unsigned char *data)
716 int extended, carry = 0;
719 extended = (carry << 8) + data[i];
720 data[i] = extended / 10;
721 carry = extended % 10;
727 * \brief Encode the mac address on a fixed lenght string of 15 characters.
728 * we save space this way.
730 std::string Util::GetMACAddress()
732 // This code is the result of a long internet search to find something
733 // as compact as possible (not OS independant). We only have to separate
734 // 3 OS: Win32, SunOS and 'real' POSIX
735 // http://groups-beta.google.com/group/comp.unix.solaris/msg/ad36929d783d63be
736 // http://bdn.borland.com/article/0,1410,26040,00.html
737 unsigned char addr[6];
739 int stat = GetMacAddrSys(addr);
742 // We need to convert a 6 digit number from base 256 to base 10, using integer
743 // would requires a 48bits one. To avoid this we have to reimplement the div + modulo
750 res = getlastdigit(addr);
751 sres.insert(sres.begin(), '0' + res);
752 zero = (addr[0] == 0) && (addr[1] == 0) && (addr[2] == 0)
753 && (addr[3] == 0) && (addr[4] == 0) && (addr[5] == 0);
760 gdcmWarningMacro("Problem in finding the MAC Address");
766 * \brief Creates a new UID. As stipulate in the DICOM ref
767 * each time a DICOM image is create it should have
768 * a unique identifier (URI)
769 * @param root is the DICOM prefix assigned by IOS group
771 std::string Util::CreateUniqueUID(const std::string &root)
777 // gdcm UID prefix, as supplied by http://www.medicalconnections.co.uk
785 // A root was specified use it to forge our new UID:
787 append += Util::GetMACAddress();
789 append += Util::GetCurrentDateTime();
791 //Also add a mini random number just in case:
792 int r = (int) (100.0*rand()/RAND_MAX);
793 append += Format("%02d", r);
795 // If append is too long we need to rehash it
796 if( (prefix + append).size() > 64 )
798 gdcmErrorMacro( "Size of UID is too long." );
799 // we need a hash function to truncate this number
800 // if only md5 was cross plateform
804 return prefix + append;
807 void Util::SetRootUID(const std::string &root)
815 const std::string &Util::GetRootUID()
820 //-------------------------------------------------------------------------
822 * \brief binary_write binary_write
823 * @param os ostream to write to
826 std::ostream &binary_write(std::ostream &os, const uint16_t &val)
828 #if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION)
830 //swap = ((( val << 8 ) & 0xff00 ) | (( val >> 8 ) & 0x00ff ) );
832 swap = ( val << 8 | val >> 8 );
834 return os.write(reinterpret_cast<const char*>(&swap), 2);
836 return os.write(reinterpret_cast<const char*>(&val), 2);
837 #endif //GDCM_WORDS_BIGENDIAN
841 * \brief binary_write binary_write
842 * @param os ostream to write to
845 std::ostream &binary_write(std::ostream &os, const uint32_t &val)
847 #if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION)
849 // swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) |
850 // ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) );
852 swap = ( (val<<24) | ((val<<8) & 0x00ff0000) |
853 ((val>>8) & 0x0000ff00) | (val>>24) );
854 return os.write(reinterpret_cast<const char*>(&swap), 4);
856 return os.write(reinterpret_cast<const char*>(&val), 4);
857 #endif //GDCM_WORDS_BIGENDIAN
861 * \brief binary_write binary_write
862 * @param os ostream to write to
865 std::ostream &binary_write(std::ostream &os, const char *val)
867 return os.write(val, strlen(val));
872 * @param os ostream to write to
875 std::ostream &binary_write(std::ostream &os, std::string const &val)
877 return os.write(val.c_str(), val.size());
881 * \brief binary_write binary_write
882 * @param os ostream to write to
884 * @param len length of the 'value' to be written
886 std::ostream &binary_write(std::ostream &os, const uint8_t *val, size_t len)
888 // We are writting sizeof(char) thus no need to swap bytes
889 return os.write(reinterpret_cast<const char*>(val), len);
893 * \brief binary_write binary_write
894 * @param os ostream to write to
896 * @param len length of the 'value' to be written
898 std::ostream &binary_write(std::ostream &os, const uint16_t *val, size_t len)
900 // This is tricky since we are writting two bytes buffer.
901 // Be carefull with little endian vs big endian.
902 // Also this other trick is to allocate a small (efficient) buffer that store
903 // intermediate result before writting it.
904 #if defined(GDCM_WORDS_BIGENDIAN) || defined(GDCM_FORCE_BIGENDIAN_EMULATION)
905 const int BUFFER_SIZE = 4096;
906 uint16_t *binArea16 = (uint16_t*)val;
907 uint16_t *buffer = new uint16_t[BUFFER_SIZE/2];
908 uint16_t *pbuffer = buffer;
910 // how many BUFFER_SIZE long pieces in binArea ?
911 int nbPieces = len/BUFFER_SIZE; //(16 bits = 2 Bytes)
912 int remainingSize = len%BUFFER_SIZE;
914 for (int j=0;j<nbPieces;j++)
917 for (int i = 0; i < BUFFER_SIZE/2; i++)
919 //uint16_t val16 = binArea16[i];
920 //buffer[i] = ((( val16 << 8 ) & 0xff00 ) | (( val16 >> 8 ) & 0x00ff ) );
922 // 1) Save 1 affectation and 2 AND operations
923 // buffer[i] = (binArea16[i] >> 8) | (binArea16[i] << 8);
924 // 2) Replace * operations by + operations using pointers
925 *pbuffer = *binArea16 >> 8 | *binArea16 >> 8;
929 os.write ( (char*)buffer, BUFFER_SIZE );
930 binArea16 += BUFFER_SIZE/2;
932 if ( remainingSize > 0)
934 for (int i = 0; i < remainingSize/2; i++)
936 //uint16_t val16 = binArea16[i];
937 //buffer[i] = ((( val16 << 8 ) & 0xff00 ) | (( val16 >> 8 ) & 0x00ff) );
938 *pbuffer = *binArea16 >> 8 | *binArea16 >> 8;
942 os.write ( (char*)buffer, remainingSize );
947 return os.write(reinterpret_cast<const char*>(val), len);
951 //-------------------------------------------------------------------------
954 //-------------------------------------------------------------------------
957 * \brief Return the IP adress of the machine writting the DICOM image
959 std::string Util::GetIPAddress()
961 // This is a rip from
962 // http://www.codeguru.com/Cpp/I-N/internet/network/article.php/c3445/
963 #ifndef HOST_NAME_MAX
964 // SUSv2 guarantees that `Host names are limited to 255 bytes'.
965 // POSIX 1003.1-2001 guarantees that `Host names (not including the
966 // terminating NUL) are limited to HOST_NAME_MAX bytes'.
967 #define HOST_NAME_MAX 255
968 // In this case we should maybe check the string was not truncated.
969 // But I don't known how to check that...
970 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__)
971 // with WinSock DLL we need to initialize the WinSock before using gethostname
972 WORD wVersionRequested = MAKEWORD(1,0);
974 int err = WSAStartup(wVersionRequested,&WSAData);
977 // Tell the user that we could not find a usable
984 #endif //HOST_NAME_MAX
987 char szHostName[HOST_NAME_MAX+1];
988 int r = gethostname(szHostName, HOST_NAME_MAX);
993 struct hostent *pHost = gethostbyname(szHostName);
995 for( int i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
997 for( int j = 0; j<pHost->h_length; j++ )
999 if( j > 0 ) str += ".";
1001 str += Util::Format("%u",
1002 (unsigned int)((unsigned char*)pHost->h_addr_list[i])[j]);
1004 // str now contains one local IP address
1006 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__)
1012 // If an error occur r == -1
1013 // Most of the time it will return 127.0.0.1...
1017 //-------------------------------------------------------------------------
1018 } // end namespace gdcm