EMAN::Gatan::TagEntry Class Reference

#include <dm3io.h>

Collaboration diagram for EMAN::Gatan::TagEntry:

Public Types
enum	EntryType { GROUP_TAG = 20 , DATA_TAG = 21 }

Public Member Functions
	TagEntry (FILE *data_file, TagTable *tagtable, TagGroup *parent_group)
	~TagEntry ()
int	read (bool nodata=false)

Private Attributes
FILE *	in
TagTable *	tagtable
TagGroup *	parent_group
string	name

Detailed Description

Definition at line 155 of file dm3io.h.

Member Enumeration Documentation

EntryType

enum EMAN::Gatan::TagEntry::EntryType

Enumerator
GROUP_TAG
DATA_TAG

Definition at line 158 of file dm3io.h.

                        {
                                GROUP_TAG = 20,
                                DATA_TAG = 21
                        };

Constructor & Destructor Documentation

TagEntry()

TagEntry::TagEntry	(	FILE *	data_file,
		TagTable *	tagtable,
		TagGroup *	parent_group
	)

Definition at line 570 of file dm3io.cpp.

        :       in(data_file), tagtable(table), parent_group(parent), name("")
{
}

~TagEntry()

TagEntry::~TagEntry

(

)

Definition at line 575 of file dm3io.cpp.

{
}

Member Function Documentation

read()

int TagEntry::read

(

bool

nodata = false

)

Definition at line 579 of file dm3io.cpp.

{
        LOGVAR("TagEntry::read()");
        int err = 0;
        char tag_type = 0;
        char *tmp_name = 0;
 
        size_t nr;
        nr = fread(&tag_type, sizeof(char), 1, in); nr++;
 
        if (tag_type != GROUP_TAG && tag_type != DATA_TAG) {
                LOGERR("TagEntry::read() invalid tag type: %d", tag_type);
                return 1;
        }
 
        short name_len = 0;
        nr = fread(&name_len, sizeof(short), 1, in); nr++;
        ByteOrder::become_big_endian(&name_len);
 
        if (name_len != 0) {
                tmp_name = new char[name_len + 1];
                nr = fread(tmp_name, name_len, 1, in); nr++;
                tmp_name[name_len] = '\0';
        }
        else {
                string parent_name = parent_group->get_name();
                name_len = static_cast < short >(parent_name.size() + 4);
                tmp_name = new char[name_len + 1];
                sprintf(tmp_name, "%s #%d", parent_name.c_str(), parent_group->get_entry_id());
        }
 
        name = string(tmp_name);
 
        if (tmp_name) {
                delete [] tmp_name;
                tmp_name = 0;
        }
 
        LOGVAR("\ntag name: '%s', len: %d, type: '%s'",
                   name.c_str(), name_len, Gatan::to_str((EntryType) tag_type));
 
        if (tag_type == DATA_TAG) {
                TagData tag_data(in, tagtable, name);
                err = tag_data.read(nodata);
        }
        else if (tag_type == GROUP_TAG) {
                TagGroup group(in, tagtable, name);
                err = group.read(nodata);
        }
 
        return err;
}

References EMAN::ByteOrder::become_big_endian(), DATA_TAG, EMAN::Gatan::TagGroup::get_entry_id(), EMAN::Gatan::TagGroup::get_name(), GROUP_TAG, in, LOGERR, LOGVAR, name, parent_group, EMAN::Gatan::TagData::read(), EMAN::Gatan::TagGroup::read(), tagtable, and EMAN::Gatan::to_str().

Referenced by EMAN::Gatan::TagGroup::read().

Member Data Documentation

in

FILE* EMAN::Gatan::TagEntry::in

private

Definition at line 170 of file dm3io.h.

Referenced by read().

name

string EMAN::Gatan::TagEntry::name

private

Definition at line 173 of file dm3io.h.

Referenced by read().

parent_group

TagGroup* EMAN::Gatan::TagEntry::parent_group

private

Definition at line 172 of file dm3io.h.

Referenced by read().

tagtable

TagTable* EMAN::Gatan::TagEntry::tagtable

private

Definition at line 171 of file dm3io.h.

Referenced by read().

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The documentation for this class was generated from the following files:

• dm3io.h
• dm3io.cpp