-// $Header: /cvs/public/gdcm/src/gdcmUtil.cxx,v 1.13 2003/06/26 13:07:01 jpr Exp $
+/*=========================================================================
+
+ Program: gdcm
+ Module: $RCSfile: gdcmUtil.cxx,v $
+ Language: C++
+ Date: $Date: 2004/11/16 02:54:35 $
+ Version: $Revision: 1.64 $
+
+ Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
+ l'Image). All rights reserved. See Doc/License.txt or
+ http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the above copyright notices for more information.
+
+=========================================================================*/
-#include <stdio.h>
-#include <ctype.h> // For isspace
-#include <string.h>
#include "gdcmUtil.h"
-using namespace std;
+#include "gdcmDebug.h"
-// Library globals.
-gdcmDebug dbg;
+// For GetCurrentDate, GetCurrentTime
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
-gdcmDebug::gdcmDebug(int level) {
- DebugLevel = level;
-}
+#include <stdarg.h> //only included in implementation file
+#include <stdio.h> //only included in implementation file
-void gdcmDebug::Verbose(int Level, const char * Msg1, const char * Msg2) {
- if (Level > DebugLevel)
- return ;
- cerr << Msg1 << ' ' << Msg2 << '\n';
-}
+#include <unistd.h> // for gethostname
+#include <netdb.h> // for gethostbyname
-/*
-void gdcmDebug::Verbose(int Level, char * Msg1, char * Msg2) {
- if (Level > DebugLevel)
- return ;
- cerr << Msg1 << ' ' << Msg2 << '\n';
-}
-*/
+namespace gdcm
+{
-void gdcmDebug::Assert(int Level, bool Test,
- const char * Msg1, const char * Msg2) {
- if (Level > DebugLevel)
- return ;
- if (!Test)
- cerr << Msg1 << ' ' << Msg2 << '\n';
+/**
+ * \ingroup Globals
+ * \brief Provide a better 'c++' approach for sprintf
+ * For example c code is:
+ * sprintf(trash, "%04x|%04x", group , element);
+ *
+ * c++ is
+ * std::ostringstream buf;
+ * buf << std::right << std::setw(4) << std::setfill('0') << std::hex
+ * << group << "|" << std::right << std::setw(4) << std::setfill('0')
+ * << std::hex << element;
+ * buf.str();
+ */
+
+std::string Util::Format(const char* format, ...)
+{
+ char buffer[2048];
+ 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;
}
-void gdcmDebug::Error( bool Test, const char * Msg1, const char * Msg2) {
- if (!Test)
- return;
- std::cerr << Msg1 << ' ' << Msg2 << '\n';
- Exit(1);
+
+/**
+ * \ingroup Globals
+ * \brief Because not available in C++ (?)
+ */
+void Util::Tokenize (const std::string& str,
+ std::vector<std::string>& tokens,
+ const std::string& delimiters)
+{
+ std::string::size_type lastPos = str.find_first_not_of(delimiters,0);
+ std::string::size_type pos = str.find_first_of (delimiters,lastPos);
+ while (std::string::npos != pos || std::string::npos != lastPos)
+ {
+ tokens.push_back(str.substr(lastPos, pos - lastPos));
+ lastPos = str.find_first_not_of(delimiters, pos);
+ pos = str.find_first_of (delimiters, lastPos);
+ }
}
-void gdcmDebug::Error(const char* Msg1, const char* Msg2,
- const char* Msg3) {
- std::cerr << Msg1 << ' ' << Msg2 << ' ' << Msg3 << '\n';
- Exit(1);
+/**
+ * \ingroup Globals
+ * \brief Because not available in C++ (?)
+ * Counts the number of occurences of a substring within a string
+ */
+
+int Util::CountSubstring (const std::string& str,
+ const std::string& subStr)
+{
+ int count = 0; // counts how many times it appears
+ unsigned int x = 0; // The index position in the string
+
+ do
+ {
+ x = str.find(subStr,x); // Find the substring
+ if (x != std::string::npos) // If present
+ {
+ count++; // increase the count
+ x += subStr.length(); // Skip this word
+ }
+ }
+ while (x != std::string::npos); // Carry on until not present
+
+ return count;
}
-void gdcmDebug::Exit(int a) {
-#ifdef __GNUC__
- std::exit(a);
-#endif
-#ifdef _MSC_VER
- exit(a); // Found in #include <stdlib.h>
-#endif
+/**
+ * \ingroup Globals
+ * \brief Weed out a string from the non-printable characters (in order
+ * to avoid corrupting the terminal of invocation when printing)
+ * @param s string to remove non printable characters from
+ */
+std::string Util::CreateCleanString(std::string const & s)
+{
+ std::string str = s;
+
+ for(unsigned int i=0;i<str.size();i++)
+ {
+ if(!isprint(str[i]))
+ {
+ str[i]='.';
+ }
+ }
+
+ if(str.size()>0)
+ {
+ if(!isprint(s[str.size()-1]))
+ {
+ if(s[str.size()-1]==0)
+ {
+ str[str.size()-1]=' ';
+ }
+ }
+ }
+
+ return str;
}
-///////////////////////////////////////////////////////////////////////////
-gdcmVR * gdcmGlobal::VR = (gdcmVR*)0;
-gdcmTS * gdcmGlobal::TS = (gdcmTS*)0;
-gdcmDictSet * gdcmGlobal::Dicts = (gdcmDictSet*)0;
-gdcmGlobal gdcmGlob;
+/**
+ * \ingroup Globals
+ * \brief Add a SEPARATOR to the end of the name is necessary
+ * @param name file/directory name to normalize
+ */
+std::string Util::NormalizePath(std::string const & pathname)
+{
+ const char SEPARATOR_X = '/';
+ const char SEPARATOR_WIN = '\\';
+ const std::string SEPARATOR = "/";
+ std::string name = pathname;
+ int size = name.size();
-gdcmGlobal::gdcmGlobal(void) {
- if (VR || TS || Dicts)
- dbg.Verbose(0, "gdcmGlobal::gdcmGlobal : VR or TS or Dicts allready allocated");
- VR = new gdcmVR();
- TS = new gdcmTS();
- Dicts = new gdcmDictSet();
+ if( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
+ {
+ name += SEPARATOR;
+ }
+ return name;
}
-gdcmGlobal::~gdcmGlobal() {
- delete VR;
- delete TS;
- delete Dicts;
+/**
+ * \ingroup Globals
+ * \brief Get the (directory) path from a full path file name
+ * @param fullName file/directory name to extract Path from
+ */
+std::string Util::GetPath(std::string const & fullName)
+{
+ std::string res = fullName;
+ int pos1 = res.rfind("/");
+ int pos2 = res.rfind("\\");
+ if( pos1 > pos2)
+ {
+ res.resize(pos1);
+ }
+ else
+ {
+ res.resize(pos2);
+ }
+
+ return res;
}
-gdcmVR * gdcmGlobal::GetVR(void) {
- return VR;
+/**
+ * \ingroup Util
+ * \brief Get the (last) name of a full path file name
+ * @param fullName file/directory name to extract end name from
+ */
+std::string Util::GetName(std::string const & fullName)
+{
+ std::string filename = fullName;
+
+ std::string::size_type slash_pos = filename.rfind("/");
+ std::string::size_type backslash_pos = filename.rfind("\\");
+ slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos;
+ if(slash_pos != std::string::npos)
+ {
+ return filename.substr(slash_pos + 1);
+ }
+ else
+ {
+ return filename;
+ }
+}
+
+/**
+ * \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;
}
-gdcmTS * gdcmGlobal::GetTS(void) {
- return TS;
+/**
+ * \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;
}
-gdcmDictSet * gdcmGlobal::GetDicts(void) {
- return Dicts;
+
+/**
+ * \ingroup Util
+ * \brief Create a /DICOM/ string:
+ * It should a of even length (no odd length ever)
+ * It can contains as many \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;
}
-///////////////////////////////////////////////////////////////////////////
-// Because is not yet available in g++2.96
-istream& eatwhite(istream& is) {
- char c;
- while (is.get(c)) {
- if (!isspace(c)) {
- is.putback(c);
- break;
- }
+/**
+ * \ingroup Util
+ * \brief Create a /DICOM/ string:
+ * It should a of even lenght (no odd length ever)
+ * It can contains as many \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++;
}
- return is;
+ std::string r(s, s+l);
+ assert( !(r.size() % 2) );
+ return r;
}
-///////////////////////////////////////////////////////////////////////////
-// Because is not available in C++ (?)
-
-void Tokenize (const string& str,
- vector<string>& tokens,
- const string& delimiters) {
- string::size_type lastPos = str.find_first_not_of(delimiters,0);
- string::size_type pos = str.find_first_of (delimiters,lastPos);
- while (string::npos != pos || string::npos != lastPos) {
- tokens.push_back(str.substr(lastPos, pos - lastPos));
- lastPos = str.find_first_not_of(delimiters, pos);
- pos = str.find_first_of (delimiters, lastPos);
- }
+/**
+ * \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);
-///////////////////////////////////////////////////////////////////////////
-// to prevent a flashing screen when non-printable character
+ if( r == 0 )
+ {
+ // Get host adresses
+ struct hostent * pHost = gethostbyname(szHostName);
-char * _cleanString(char *v) {
- char *d;
- int i, l;
- l = strlen(v);
- for (i=0,d=v;
- i<l ;
- i++,d++) {
- if (!isprint(*d))
- *d = '.';
- }
- return v;
+ for( int i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
+ {
+ for( int j = 0; j<pHost->h_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();
-///////////////////////////////////////////////////////////////////////////
-// to prevent a flashing screen when non-printable character
+ return radical;
+}
-char * _CreateCleanString(string s) {
- char *d, *di, *v;
- int i, l;
- v=(char*)s.c_str();
- l = strlen(v);
- d = di = strdup(v);
- for (i=0;
- i<l ;
- i++,di++,v++) {
- if (!isprint(*v))
- *di = '.';
- }
- return d;
+template <class T>
+std::ostream& binary_write(std::ostream& os, const T& val)
+{
+ return os.write(reinterpret_cast<const char*>(&val), sizeof val);
}
-///////////////////////////////////////////////////////////////////////////
-//
-// because it may not be associated to a dictionary ...
+std::ostream& binary_write(std::ostream& os, const uint16_t& val)
+{
+#ifdef GDCM_WORDS_BIGENDIAN
+ uint16_t swap;
+ swap = ((( val << 8 ) & 0x0ff00 ) | (( val >> 8 ) & 0x00ff ) );
+ return os.write(reinterpret_cast<const char*>(&swap), 2);
+#else
+ return os.write(reinterpret_cast<const char*>(&val), 2);
+#endif //GDCM_WORDS_BIGENDIAN
+}
-std::string TranslateToKey(guint16 group, guint16 element) {
- char trash[10];
- string key;
- // CLEAN ME: better call the iostream<< with the hex manipulator on.
- // This requires some reading of the stdlibC++ sources to make the
- // proper call (or copy).
- sprintf(trash, "%04x|%04x", group , element);
- key = trash; // Convertion through assignement
- return key;
+std::ostream& binary_write(std::ostream& os, const uint32_t& val)
+{
+#ifdef GDCM_WORDS_BIGENDIAN
+ uint32_t swap;
+ swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) |
+ ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) );
+ return os.write(reinterpret_cast<const char*>(&swap), 4);
+#else
+ return os.write(reinterpret_cast<const char*>(&val), 4);
+#endif //GDCM_WORDS_BIGENDIAN
}
+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
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff