1 /*=========================================================================
4 Module: $RCSfile: gdcmUtil.cxx,v $
6 Date: $Date: 2004/11/10 18:27:24 $
7 Version: $Revision: 1.61 $
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"
22 // For GetCurrentDate, GetCurrentTime
24 #include <sys/types.h>
27 #include <stdarg.h> //only included in implementation file
28 #include <stdio.h> //only included in implementation file
35 * \brief Provide a better 'c++' approach for sprintf
36 * For example c code is:
37 * sprintf(trash, "%04x|%04x", group , element);
40 * std::ostringstream buf;
41 * buf << std::right << std::setw(4) << std::setfill('0') << std::hex
42 * << group << "|" << std::right << std::setw(4) << std::setfill('0')
43 * << std::hex << element;
47 std::string Util::Format(const char* format, ...)
51 va_start(args, format);
52 vsprintf(buffer, format, args); //might be a security flaw
59 * \brief Because not available in C++ (?)
61 void Util::Tokenize (const std::string& str,
62 std::vector<std::string>& tokens,
63 const std::string& delimiters)
65 std::string::size_type lastPos = str.find_first_not_of(delimiters,0);
66 std::string::size_type pos = str.find_first_of (delimiters,lastPos);
67 while (std::string::npos != pos || std::string::npos != lastPos)
69 tokens.push_back(str.substr(lastPos, pos - lastPos));
70 lastPos = str.find_first_not_of(delimiters, pos);
71 pos = str.find_first_of (delimiters, lastPos);
77 * \brief Because not available in C++ (?)
78 * Counts the number of occurences of a substring within a string
81 int Util::CountSubstring (const std::string& str,
82 const std::string& subStr)
84 int count = 0; // counts how many times it appears
85 unsigned int x = 0; // The index position in the string
89 x = str.find(subStr,x); // Find the substring
90 if (x != std::string::npos) // If present
92 count++; // increase the count
93 x += subStr.length(); // Skip this word
96 while (x != std::string::npos); // Carry on until not present
103 * \brief Weed out a string from the non-printable characters (in order
104 * to avoid corrupting the terminal of invocation when printing)
105 * @param s string to remove non printable characters from
107 std::string Util::CreateCleanString(std::string const & s)
111 for(unsigned int i=0;i<str.size();i++)
121 if(!isprint(s[str.size()-1]))
123 if(s[str.size()-1]==0)
125 str[str.size()-1]=' ';
135 * \brief Add a SEPARATOR to the end of the name is necessary
136 * @param name file/directory name to normalize
138 std::string Util::NormalizePath(std::string const & pathname)
140 const char SEPARATOR_X = '/';
141 const char SEPARATOR_WIN = '\\';
142 const std::string SEPARATOR = "/";
143 std::string name = pathname;
144 int size = name.size();
146 if( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
155 * \brief Get the (directory) path from a full path file name
156 * @param fullName file/directory name to extract Path from
158 std::string Util::GetPath(std::string const & fullName)
160 std::string res = fullName;
161 int pos1 = res.rfind("/");
162 int pos2 = res.rfind("\\");
177 * \brief Get the (last) name of a full path file name
178 * @param fullName file/directory name to extract end name from
180 std::string Util::GetName(std::string const & fullName)
182 std::string filename = fullName;
184 std::string::size_type slash_pos = filename.rfind("/");
185 std::string::size_type backslash_pos = filename.rfind("\\");
186 slash_pos = slash_pos > backslash_pos ? slash_pos : backslash_pos;
187 if(slash_pos != std::string::npos)
189 return filename.substr(slash_pos + 1);
199 * \brief Create a /DICOM/ string:
200 * It should a of even lenght (no odd length ever)
201 * It can contains as many \0 as you want.
202 * This function is similar to DicomString(const char*),
203 * except it doesn't take a lenght.
204 * It only pad with a null character if length is odd
206 std::string Util::DicomString(const char* s)
208 size_t l = strlen(s);
213 std::string r(s, s+l);
214 assert( !(r.size() % 2) );
220 * \brief Get the current date of the system in a dicom string
222 std::string Util::GetCurrentDate()
227 strftime(tmp,512,"%Y%m%d", localtime(&tloc) );
233 * \brief Get the current time of the system in a dicom string
235 std::string Util::GetCurrentTime()
240 strftime(tmp,512,"%H%M%S", localtime(&tloc) );
248 * \brief Create a /DICOM/ string:
249 * It should a of even length (no odd length ever)
250 * It can contains as many \0 as you want.
252 std::string Util::DicomString(const char* s, size_t l)
254 std::string r(s, s+l);
255 assert( !(r.size() % 2) );
260 std::ostream& binary_write(std::ostream& os, const T& val)
262 return os.write(reinterpret_cast<const char*>(&val), sizeof val);
265 std::ostream& binary_write(std::ostream& os, const uint16_t& val)
267 #ifdef GDCM_WORDS_BIGENDIAN
269 swap = ((( val << 8 ) & 0x0ff00 ) | (( val >> 8 ) & 0x00ff ) );
270 return os.write(reinterpret_cast<const char*>(&swap), 2);
272 return os.write(reinterpret_cast<const char*>(&val), 2);
273 #endif //GDCM_WORDS_BIGENDIAN
276 std::ostream& binary_write(std::ostream& os, const uint32_t& val)
278 #ifdef GDCM_WORDS_BIGENDIAN
280 swap = ( ((val<<24) & 0xff000000) | ((val<<8) & 0x00ff0000) |
281 ((val>>8) & 0x0000ff00) | ((val>>24) & 0x000000ff) );
282 return os.write(reinterpret_cast<const char*>(&swap), 4);
284 return os.write(reinterpret_cast<const char*>(&val), 4);
285 #endif //GDCM_WORDS_BIGENDIAN
289 std::ostream& binary_write(std::ostream& os, const char* val)
291 return os.write(val, strlen(val));
294 std::ostream& binary_write(std::ostream& os, std::string const & val)
296 return os.write(val.c_str(), val.size());
300 } // end namespace gdcm