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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.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 notice for more information.
=========================================================================*/
#ifndef GDCMSTRICTSCANNER2_H
#define GDCMSTRICTSCANNER2_H
#include "gdcmDirectory.h"
#include "gdcmPrivateTag.h"
#include "gdcmSmartPointer.h"
#include "gdcmSubject.h"
#include "gdcmTag.h"
#include <map>
#include <set>
#include <string>
#include <string.h> // strcmp
namespace gdcm {
class StringFilter;
/**
* \brief StrictScanner2
* \details This filter is meant for quickly browsing a FileSet (a set of files
* on disk). Special consideration are taken so as to read the minimum amount of
* information in each file in order to retrieve the user specified set of
* DICOM Attribute.
*
* This filter is dealing with both VRASCII and VRBINARY element, thanks to the
* help of StringFilter
*
* \warning IMPORTANT In case of file where tags are not ordered (illegal as
* per DICOM specification), the output will be missing information
*
* \note implementation details. All values are stored in a std::set of
* std::string. Then the address of the cstring underlying the std::string is
* used in the std::map.
*
* This class implement the Subject/Observer pattern trigger the following
* events: \li ProgressEvent \li StartEvent \li EndEvent
*/
class GDCM_EXPORT StrictScanner2 : public Subject {
friend std::ostream &operator<<(std::ostream &_os, const StrictScanner2 &s);
public:
StrictScanner2() : Values(), Filenames(), PublicMappings(), PrivateMappings() {}
~StrictScanner2() override;
/// struct to map a filename to a value
/// Implementation note:
/// all std::map in this class will be using const char * and not std::string
/// since we are pointing to existing std::string (held in a std::vector)
/// this avoid an extra copy of the byte array.
/// Tag are used as Tag class since sizeof(tag) <= sizeof(pointer)
typedef std::map<Tag, const char *> PublicTagToValue;
typedef PublicTagToValue::value_type PublicTagToValueValueType;
typedef std::map<PrivateTag, const char *> PrivateTagToValue;
typedef PrivateTagToValue::value_type PrivateTagToValueValueType;
/// Add a tag that will need to be read. Those are root level tags
bool AddPublicTag(Tag const &t);
void ClearPublicTags();
// Work in progress do not use:
bool AddPrivateTag(PrivateTag const &pt);
void ClearPrivateTags();
/// Add a tag that will need to be skipped. Those are root level skip tags
bool AddSkipTag(Tag const &t);
void ClearSkipTags();
/// Start the scan !
bool Scan(Directory::FilenamesType const &filenames);
/// Return the list of filenames
Directory::FilenamesType const &GetFilenames() const { return Filenames; }
/// Print result
void Print(std::ostream &os) const override;
/// Print result as CSV table
void PrintTable(std::ostream &os, bool header = false) const;
/// Check if filename is a key in the Mapping table.
/// returns true only of file can be found, which means
/// the file was indeed a DICOM file that could be processed
bool IsKey(const char *filename) const;
/// Return the list of filename that are key in the internal map,
/// which means those filename were properly parsed
Directory::FilenamesType GetKeys() const;
// struct to store all the values found:
typedef std::set<std::string> ValuesType;
/// Get all the values found (in lexicographic order)
ValuesType const &GetValues() const { return Values; }
/// Get all the values found (in lexicographic order) associated with Tag 't'
ValuesType GetPublicValues(Tag const &t) const;
/// Get all the values found (in lexicographic order) associated with
/// PrivateTag 'pt'
ValuesType GetPrivateValues(PrivateTag const &pt) const;
/// Get all the values found (in a vector) associated with Tag 't'
/// This function is identical to GetValues, but is accessible from the
/// wrapped layer (python, C#, java)
Directory::FilenamesType GetPublicOrderedValues(Tag const &t) const;
Directory::FilenamesType GetPrivateOrderedValues(PrivateTag const &pt) const;
/* ltstr is CRITICAL, otherwise pointers value are used to do the key
* comparison */
struct ltstr {
bool operator()(const char *s1, const char *s2) const {
assert(s1 && s2);
return strcmp(s1, s2) < 0;
}
};
typedef std::map<const char *, PublicTagToValue, ltstr> PublicMappingType;
typedef PublicMappingType::const_iterator PublicConstIterator;
PublicConstIterator Begin() const { return PublicMappings.begin(); }
PublicConstIterator End() const { return PublicMappings.end(); }
typedef std::map<const char *, PrivateTagToValue, ltstr> PrivateMappingType;
typedef PrivateMappingType::const_iterator PrivateConstIterator;
PrivateConstIterator PrivateBegin() const { return PrivateMappings.begin(); }
PrivateConstIterator PrivateEnd() const { return PrivateMappings.end(); }
/// Mappings are the mapping from a particular tag to the map, mapping
/// filename to value:
PublicMappingType const &GetPublicMappings() const { return PublicMappings; }
PrivateMappingType const &GetPrivateMappings() const {
return PrivateMappings;
}
/// Get the std::map mapping filenames to value for file 'filename'
PublicTagToValue const &GetPublicMapping(const char *filename) const;
PrivateTagToValue const &GetPrivateMapping(const char *filename) const;
/// Will loop over all files and return the first file where value match the
/// reference value 'valueref'
const char *GetFilenameFromPublicTagToValue(Tag const &t,
const char *valueref) const;
const char *GetFilenameFromPrivateTagToValue(PrivateTag const &pt,
const char *valueref) const;
/// Will loop over all files and return a vector of std::strings of filenames
/// where value match the reference value 'valueref'
Directory::FilenamesType GetAllFilenamesFromPublicTagToValue(
Tag const &t, const char *valueref) const;
Directory::FilenamesType GetAllFilenamesFromPrivateTagToValue(
PrivateTag const &pt, const char *valueref) const;
/// See GetFilenameFromTagToValue(). This is simply GetFilenameFromTagToValue
/// followed
// by a call to GetMapping()
PublicTagToValue const &GetMappingFromPublicTagToValue(
Tag const &t, const char *value) const;
PrivateTagToValue const &GetMappingFromPrivateTagToValue(
PrivateTag const &pt, const char *value) const;
/// Retrieve the value found for tag: t associated with file: filename
/// This is meant for a single short call. If multiple calls (multiple tags)
/// should be done, prefer the GetMapping function, and then reuse the
/// TagToValue hash table. \warning Tag 't' should have been added via
/// AddTag() prior to the Scan() call !
const char *GetPublicValue(const char *filename, Tag const &t) const;
const char *GetPrivateValue(const char *filename, PrivateTag const &t) const;
/// for wrapped language: instantiate a reference counted object
static SmartPointer<StrictScanner2> New() { return new StrictScanner2; }
protected:
void ProcessPublicTag(StringFilter &sf, const char *filename);
void ProcessPrivateTag(StringFilter &sf, const char *filename);
private:
// struct to store all uniq tags in ascending order:
typedef std::set<Tag> PublicTagsType;
typedef std::set<PrivateTag> PrivateTagsType;
std::set<Tag> PublicTags; // Public and Private Creator
std::set<PrivateTag> PrivateTags; // Only Private (no Private Creator)
std::set<Tag> SkipTags;
ValuesType Values;
Directory::FilenamesType Filenames;
// Main struct that will hold all public mapping:
PublicMappingType PublicMappings;
// Main struct that will hold all private mapping:
PrivateMappingType PrivateMappings;
double Progress;
};
//-----------------------------------------------------------------------------
inline std::ostream &operator<<(std::ostream &os, const StrictScanner2 &s) {
s.Print(os);
return os;
}
} // end namespace gdcm
#endif // GDCMSTRICTSCANNER2_H
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