gdcmScanner.h

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00001 /*=========================================================================
00002 
00003   Program: GDCM (Grassroots DICOM). A DICOM library
00004   Module:  $URL$
00005 
00006   Copyright (c) 2006-2010 Mathieu Malaterre
00007   All rights reserved.
00008   See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00015 #ifndef GDCMSCANNER_H
00016 #define GDCMSCANNER_H
00017 
00018 #include "gdcmDirectory.h"
00019 #include "gdcmSubject.h"
00020 #include "gdcmTag.h"
00021 #include "gdcmPrivateTag.h"
00022 #include "gdcmSmartPointer.h"
00023 
00024 #include <map>
00025 #include <set>
00026 #include <string>
00027 
00028 #include <string.h> // strcmp
00029 
00030 namespace gdcm
00031 {
00032 class StringFilter;
00033 
00056 class GDCM_EXPORT Scanner : public Subject
00057 {
00058   friend std::ostream& operator<<(std::ostream &_os, const Scanner &s);
00059 public:
00060   Scanner():Values(),Filenames(),Mappings() {}
00061   ~Scanner();
00062 
00069   typedef std::map<Tag, const char*> TagToValue;
00070   //typedef std::map<Tag, ConstCharWrapper> TagToValue; //StringMap;
00071   //typedef TagToStringMap TagToValue;
00072   typedef TagToValue::value_type TagToValueValueType;
00073 
00075   void AddTag( Tag const & t );
00076   void ClearTags();
00077 
00078   // Work in progress do not use:
00079   void AddPrivateTag( PrivateTag const & t );
00080 
00082   void AddSkipTag( Tag const & t );
00083   void ClearSkipTags();
00084 
00086   bool Scan( Directory::FilenamesType const & filenames );
00087 
00088   Directory::FilenamesType const &GetFilenames() const { return Filenames; }
00089 
00091   void Print( std::ostream & os ) const;
00092 
00096   bool IsKey( const char * filename ) const;
00097 
00100   Directory::FilenamesType GetKeys() const;
00101 
00102   // struct to store all the values found:
00103   typedef std::set< std::string > ValuesType;
00104 
00106   ValuesType const & GetValues() const { return Values; }
00107 
00109   ValuesType GetValues(Tag const &t) const;
00110 
00111   /* ltstr is CRITICAL, otherwise pointers value are used to do the key comparison */
00112   struct ltstr
00113     {
00114     bool operator()(const char* s1, const char* s2) const
00115       {
00116       assert( s1 && s2 );
00117       return strcmp(s1, s2) < 0;
00118       }
00119     };
00120   typedef std::map<const char *,TagToValue, ltstr> MappingType;
00121   typedef MappingType::const_iterator ConstIterator;
00122   ConstIterator Begin() const { return Mappings.begin(); }
00123   ConstIterator End() const { return Mappings.end(); }
00124 
00126   MappingType const & GetMappings() const { return Mappings; }
00127 
00129   TagToValue const & GetMapping(const char *filename) const;
00130 
00133   const char *GetFilenameFromTagToValue(Tag const &t, const char *valueref) const;
00134 
00136   // by a call to GetMapping()
00137   TagToValue const & GetMappingFromTagToValue(Tag const &t, const char *value) const;
00138 
00144   const char* GetValue(const char *filename, Tag const &t) const;
00145 
00147   static SmartPointer<Scanner> New() { return new Scanner; }
00148 
00149 protected:
00150   void ProcessPublicTag(StringFilter &sf, const char *filename);
00151 private:
00152   // struct to store all uniq tags in ascending order:
00153   typedef std::set< Tag > TagsType;
00154   typedef std::set< PrivateTag > PrivateTagsType;
00155   std::set< Tag > Tags;
00156   std::set< PrivateTag > PrivateTags;
00157   std::set< Tag > SkipTags;
00158   ValuesType Values;
00159   Directory::FilenamesType Filenames;
00160 
00161   // Main struct that will hold all mapping:
00162   MappingType Mappings;
00163 
00164   double Progress;
00165 };
00166 //-----------------------------------------------------------------------------
00167 inline std::ostream& operator<<(std::ostream &os, const Scanner &s)
00168 {
00169   s.Print( os );
00170   return os;
00171 }
00172 
00173 #if defined(SWIGPYTHON) || defined(SWIGCSHARP) || defined(SWIGJAVA)
00174 /*
00175  * HACK: I need this temp class to be able to manipulate a std::map from python,
00176  * swig does not support wrapping of simple class like std::map...
00177  */
00178 class SWIGTagToValue
00179 {
00180 public:
00181   SWIGTagToValue(Scanner::TagToValue const &t2v):Internal(t2v),it(t2v.begin()) {}
00182   const Scanner::TagToValueValueType& GetCurrent() const { return *it; }
00183   const Tag& GetCurrentTag() const { return it->first; }
00184   const char *GetCurrentValue() const { return it->second; }
00185   void Start() { it = Internal.begin(); }
00186   bool IsAtEnd() const { return it == Internal.end(); }
00187   void Next() { ++it; }
00188 private:
00189   const Scanner::TagToValue& Internal;
00190   Scanner::TagToValue::const_iterator it;
00191 };
00192 #endif /* SWIG */
00193 
00199 } // end namespace gdcm
00200 
00201 #endif //GDCMSCANNER_H

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