X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmUtil.cxx;h=edaee708673a42246819c89f80ecad4069a6ec0a;hb=6fc40309997e3c20fc494201644a3e8094f0c971;hp=889ece2064d22206fc35856c25f818fdfc714f56;hpb=8479d585fdf6fde5e21127cfd1d68227179c5f3f;p=gdcm.git diff --git a/src/gdcmUtil.cxx b/src/gdcmUtil.cxx index 889ece20..edaee708 100644 --- a/src/gdcmUtil.cxx +++ b/src/gdcmUtil.cxx @@ -3,8 +3,8 @@ Program: gdcm Module: $RCSfile: gdcmUtil.cxx,v $ Language: C++ - Date: $Date: 2004/10/28 23:10:25 $ - Version: $Revision: 1.58 $ + Date: $Date: 2004/11/16 10:37:54 $ + Version: $Revision: 1.66 $ Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de l'Image). All rights reserved. See Doc/License.txt or @@ -19,12 +19,24 @@ #include "gdcmUtil.h" #include "gdcmDebug.h" +// For GetCurrentDate, GetCurrentTime +#include +#include +#include + #include //only included in implementation file #include //only included in implementation file +#if defined _MSC_VER || defined(__BORLANDC__) + #include // for gethostname & gethostbyname + #undef GetCurrentTime +#else + #include // for gethostname + #include // for gethostbyname +#endif + namespace gdcm { - /** * \ingroup Globals * \brief Provide a better 'c++' approach for sprintf @@ -45,6 +57,9 @@ std::string Util::Format(const char* format, ...) va_list args; va_start(args, format); vsprintf(buffer, format, args); //might be a security flaw + va_end(args); // Each invocation of va_start should be matched + // by a corresponding invocation of va_end + // args is then 'undefined' return buffer; } @@ -128,7 +143,7 @@ std::string Util::CreateCleanString(std::string const & s) /** * \ingroup Globals * \brief Add a SEPARATOR to the end of the name is necessary - * @param name file/directory name to normalize + * @param pathname file/directory name to normalize */ std::string Util::NormalizePath(std::string const & pathname) { @@ -168,7 +183,7 @@ std::string Util::GetPath(std::string const & fullName) } /** - * \ingroup Globals + * \ingroup Util * \brief Get the (last) name of a full path file name * @param fullName file/directory name to extract end name from */ @@ -189,6 +204,162 @@ std::string Util::GetName(std::string const & fullName) } } +/** + * \ingroup Util + * \brief Get the current date of the system in a dicom string + */ +std::string Util::GetCurrentDate() +{ + char tmp[512]; + time_t tloc; + time (&tloc); + strftime(tmp,512,"%Y%m%d", localtime(&tloc) ); + return tmp; +} + +/** + * \ingroup Util + * \brief Get the current time of the system in a dicom string + */ +std::string Util::GetCurrentTime() +{ + char tmp[512]; + time_t tloc; + time (&tloc); + strftime(tmp,512,"%H%M%S", localtime(&tloc) ); + return tmp; +} + +/** + * \brief Create a /DICOM/ string: + * It should a of even length (no odd length ever) + * It can contain as many (if you are reading this from your + * editor the following character is is backslash followed by zero + * that needed to be escaped with an extra backslash for doxygen) \\0 + * as you want. + */ +std::string Util::DicomString(const char* s, size_t l) +{ + std::string r(s, s+l); + assert( !(r.size() % 2) ); // == basically 'l' is even + return r; +} + +/** + * \ingroup Util + * \brief Create a /DICOM/ string: + * It should a of even lenght (no odd length ever) + * It can contain as many (if you are reading this from your + * editor the following character is is backslash followed by zero + * that needed to be escaped with an extra backslash for doxygen) \\0 + * as you want. + * This function is similar to DicomString(const char*), + * except it doesn't take a lenght. + * It only pad with a null character if length is odd + */ +std::string Util::DicomString(const char* s) +{ + size_t l = strlen(s); + if( l%2 ) + { + l++; + } + std::string r(s, s+l); + assert( !(r.size() % 2) ); + return r; +} + +/** + * \ingroup Util + * \brief Safely compare two Dicom String: + * - Both string should be of even lenght + * - We allow padding of even lenght string by either a null + * character of a space + */ +bool Util::DicomStringEqual(const std::string& s1, const char *s2) +{ + // s2 is the string from the DICOM reference: 'MONOCHROME1' + std::string s1_even = s1; //Never change input parameter + std::string s2_even = DicomString( s2 ); + if( s1_even[s1_even.size()-1] == ' ') + { + s1_even[s1_even.size()-1] = '\0'; //replace space character by null + } + return s1_even == s2_even; +} + +/** + * \ingroup Util + * \brief Return the IP adress of the machine writting the DICOM image + */ +std::string Util::GetIPAddress() +{ + // This is a rip from http://www.codeguru.com/Cpp/I-N/internet/network/article.php/c3445/ +#ifndef HOST_NAME_MAX + // SUSv2 guarantees that `Host names are limited to 255 bytes'. + // POSIX 1003.1-2001 guarantees that `Host names (not including the + // terminating NUL) are limited to HOST_NAME_MAX bytes'. +# define HOST_NAME_MAX 255 + // In this case we should maybe check the string was not truncated. + // But I don't known how to check that... +#endif //HOST_NAME_MAX + + std::string str; + char szHostName[HOST_NAME_MAX+1]; + int r = gethostname(szHostName, HOST_NAME_MAX); + + if( r == 0 ) + { + // Get host adresses + struct hostent * pHost = gethostbyname(szHostName); + + for( int i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ ) + { + for( int j = 0; jh_length; j++ ) + { + if( j > 0 ) str += "."; + + str += Util::Format("%u", + (unsigned int)((unsigned char*)pHost->h_addr_list[i])[j]); + } + // str now contains one local IP address + } + } + // If an error occur r == -1 + // Most of the time it will return 127.0.0.1... + return str; +} + +/** + * \ingroup Util + * \brief Creates a new UID. As stipulate in the DICOM ref + * each time a DICOM image is create it should have + * a unique identifier (URI) + */ +std::string Util::CreateUniqueUID(const std::string& root) +{ + // The code works as follow: + // echo "gdcm" | od -b + // 0000000 147 144 143 155 012 + // Therefore we return + // radical + 147.144.143.155 + IP + time() + std::string radical = root; + if( !root.size() ) //anything better ? + { + radical = "0.0."; // Is this really usefull ? + } + // else + // A root was specified use it to forge our new UID: + radical += "147.144.143.155"; // gdcm + radical += "."; + radical += Util::GetIPAddress(); + radical += "."; + radical += Util::GetCurrentDate(); + radical += "."; + radical += Util::GetCurrentTime(); + + return radical; +} template std::ostream& binary_write(std::ostream& os, const T& val) @@ -219,12 +390,15 @@ std::ostream& binary_write(std::ostream& os, const uint32_t& val) #endif //GDCM_WORDS_BIGENDIAN } -//template <> std::ostream& binary_write(std::ostream& os, const char* val) { return os.write(val, strlen(val)); } +std::ostream& binary_write(std::ostream& os, std::string const & val) +{ + return os.write(val.c_str(), val.size()); +} } // end namespace gdcm