/* GHelm - Nautical Navigation Software * Copyright (C) 2004 Jon Michaelchuck * * This application is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this software; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA. */#include "feature.h"#include "util.h"/** * Constructor */Feature::Feature() :    object_label(0), record_id(0), group(0), feature_id(0), feature_subid(0){}/** * Destructor */Feature::~Feature(){}/** * Load feature data from a record * @param record Record to read * @return -1 on failure, 0 on success */int Feature::Load(DDFRecord *record){    int bytes_remaining;    int bytes_consumed;    const char *field_data;    const char *field_name;    DDFField *field;    DDFFieldDefn *field_defn;    DDFSubfieldDefn *subfield_defn;    int field_count = record->GetFieldCount();    if (field_count < 2) {        std::cerr << "Feature::Load(): Field count < 2" << std::endl;        return -1;    }    // Read the FRID field and associated subfields    field = record->GetField(1);    if (!field)        return -1;    field_defn = field->GetFieldDefn();    if (!field_defn)        return -1;    field_name = field_defn->GetName();    field_data = field->GetData();    if (!field_data)        return -1;    bytes_remaining = field->GetDataSize();    // skip rcnm    subfield_defn = field_defn->GetSubfield(0);    if (!subfield_defn)        return -1;    subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    subfield_defn = field_defn->GetSubfield(1);    if (!subfield_defn)        return -1;    record_id = subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    // skip object prim    subfield_defn = field_defn->GetSubfield(2);    if (!subfield_defn)        return -1;    subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    subfield_defn = field_defn->GetSubfield(3);    if (!subfield_defn)        return -1;    group = subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    subfield_defn = field_defn->GetSubfield(4);    if (!subfield_defn)        return -1;    object_label = subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    // skip record ver, update ins    for (int i = 5; i < 7; i++) {        subfield_defn = field_defn->GetSubfield(i);        if (!subfield_defn)            return -1;        subfield_defn->ExtractIntData(field_data, bytes_remaining,                                          &bytes_consumed);        bytes_remaining -= bytes_consumed;        field_data += bytes_consumed;    }    // read the FOID     field = record->GetField(2);    if (!field)        return -1;    field_defn = field->GetFieldDefn();    if (!field_defn)        return -1;    field_name = field_defn->GetName();    field_data = field->GetData();    if (!field_data)        return -1;    bytes_remaining = field->GetDataSize();    // skip agen    subfield_defn = field_defn->GetSubfield(0);    if (!subfield_defn)        return -1;    subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    subfield_defn = field_defn->GetSubfield(1);    if (!subfield_defn)        return -1;    feature_id = subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    subfield_defn = field_defn->GetSubfield(2);    if (!subfield_defn)        return -1;    feature_subid = subfield_defn->ExtractIntData(field_data, bytes_remaining,                                        &bytes_consumed);    bytes_remaining -= bytes_consumed;    field_data += bytes_consumed;    // Now read the next fields. They could be ATTF<R>,    // NATF<R>, FFPT<R>, FSPT<R>    for (int i = 3; i < field_count; i++) {        field = record->GetField(i);        if (!field)            return -1;        field_defn = field->GetFieldDefn();        if (!field_defn)            return -1;        field_data = field->GetData();        if (!field_data)            return -1;        bytes_remaining = field->GetDataSize();        field_name = field_defn->GetName();        if (strncmp(field_name, "ATTF", 4) == 0) {            int repeat_count = field->GetRepeatCount();            for (int j = 0; j < repeat_count; j++) {                attf_t attf;                subfield_defn = field_defn->GetSubfield(0);                if (!subfield_defn)                    return -1;                attf.attl = subfield_defn->ExtractIntData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                subfield_defn = field_defn->GetSubfield(1);                if (!subfield_defn)                    return -1;                attf.atvl = subfield_defn->ExtractStringData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                if (attf.attl == 116)                    name = attf.atvl;                attfs.push_back(attf);            }        }        else if (strncmp(field_name, "NATF", 4) == 0) {            int repeat_count = field->GetRepeatCount();            for (int j = 0; j < repeat_count; j++) {                attf_t natf;                subfield_defn = field_defn->GetSubfield(0);                if (!subfield_defn)                    return -1;                natf.attl = subfield_defn->ExtractIntData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                subfield_defn = field_defn->GetSubfield(1);                if (!subfield_defn)                    return -1;                natf.atvl = subfield_defn->ExtractStringData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                natfs.push_back(natf);            }        }        else if (strncmp(field_name, "FFPT", 4) == 0) {            int repeat_count = field->GetRepeatCount();            for (int j = 0; j < repeat_count; j++) {                ffpt_t ffpt;                subfield_defn = field_defn->GetSubfield(0);                if (!subfield_defn)                    return -1;                                unsigned char *bstr = (unsigned char *)                       subfield_defn->ExtractStringData(field_data,                                bytes_remaining, &bytes_consumed);                int agen_find_fids[3];                decode_lnam_string(bstr, bytes_consumed, agen_find_fids);                field_data += bytes_consumed;                bytes_remaining -= bytes_consumed;                subfield_defn = field_defn->GetSubfield(1);                if (!subfield_defn)                    return -1;                ffpt.rind = subfield_defn->ExtractIntData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                subfield_defn = field_defn->GetSubfield(2);                if (!subfield_defn)                    return -1;                ffpt.comt = subfield_defn->ExtractStringData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                ffpts.push_back(ffpt);            }        }        else if (strncmp(field_name, "FSPT", 4) == 0) {            int repeat_count = field->GetRepeatCount();            for (int j = 0; j < repeat_count; j++) {                fspt_t fspt;                subfield_defn = field_defn->GetSubfield(0);                if (!subfield_defn)                    return -1;                unsigned char *bstr = (unsigned char *)                       subfield_defn->ExtractStringData(field_data,                                bytes_remaining, &bytes_consumed);                int rcnm_rcid[2];                decode_name_string(bstr, bytes_consumed, rcnm_rcid);                fspt.rcnm = rcnm_rcid[0];                fspt.rcid = rcnm_rcid[1];                field_data += bytes_consumed;                bytes_remaining -= bytes_consumed;                ref_record_ids.push_back(fspt.rcid);                subfield_defn = field_defn->GetSubfield(1);                if (!subfield_defn)                    return -1;                fspt.ornt = subfield_defn->ExtractIntData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                subfield_defn = field_defn->GetSubfield(2);                if (!subfield_defn)                    return -1;                fspt.usag = subfield_defn->ExtractIntData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                                subfield_defn = field_defn->GetSubfield(3);                if (!subfield_defn)                    return -1;                fspt.mask = subfield_defn->ExtractIntData(field_data,                                        bytes_remaining, &bytes_consumed);                bytes_remaining -= bytes_consumed;                field_data += bytes_consumed;                fspts.push_back(fspt);            }        }        else if ((strncmp(field_name, "FSPC", 4) == 0) ||                 (strncmp(field_name, "FFPC", 4) == 0)) {        } else {            std::cerr << "Feature::Load(): Unknown field "                      << field_name << std::endl;            return -1;        }    }        return object_label;}