397 lines
11 KiB
C++
397 lines
11 KiB
C++
#include "decodedtext.h"
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#include <QStringList>
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#include <QRegularExpression>
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#include <QDebug>
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#include <varicode.h>
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extern "C" {
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bool stdmsg_(char const * msg, bool contest_mode, char const * mygrid, fortran_charlen_t, fortran_charlen_t);
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}
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namespace
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{
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QRegularExpression words_re {R"(^(?:(?<word1>(?:CQ|DE|QRZ)(?:\s?DX|\s(?:[A-Z]{2}|\d{3}))|[A-Z0-9/]+)\s)(?:(?<word2>[A-Z0-9/]+)(?:\s(?<word3>[-+A-Z0-9]+)(?:\s(?<word4>(?:OOO|(?!RR73)[A-R]{2}[0-9]{2})))?)?)?)"};
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}
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DecodedText::DecodedText (QString const& the_string, bool contest_mode, QString const& my_grid)
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: string_ {the_string.left (the_string.indexOf (QChar::Nbsp))} // discard appended info
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, padding_ {string_.indexOf (" ") > 4 ? 2 : 0} // allow for seconds
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, contest_mode_ {contest_mode}
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, message_ {string_.mid (column_qsoText + padding_).trimmed ()}
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, is_standard_ {false}
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, frameType_(Varicode::FrameUnknown)
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, isHeartbeat_(false)
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, isAlt_(false)
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, bits_{0}
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{
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if(message_.length() >= 1) {
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message_ = message_.left (21).remove (QRegularExpression {"[<>]"});
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int i1 = message_.indexOf ('\r');
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if (i1 > 0) {
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message_ = message_.left (i1 - 1);
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}
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if (message_.contains (QRegularExpression {"^(CQ|QRZ)\\s"})) {
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// TODO this magic position 16 is guaranteed to be after the
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// last space in a decoded CQ or QRZ message but before any
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// appended DXCC entity name or worked before information
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auto eom_pos = message_.indexOf (' ', 16);
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// we always want at least the characters to position 16
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if (eom_pos < 16) eom_pos = message_.size () - 1;
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// remove DXCC entity and worked B4 status. TODO need a better way to do this
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message_ = message_.left (eom_pos + 1);
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}
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// stdmsg is a fortran routine that packs the text, unpacks it
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// and compares the result
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auto message_c_string = message_.toLocal8Bit ();
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message_c_string += QByteArray {22 - message_c_string.size (), ' '};
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auto grid_c_string = my_grid.toLocal8Bit ();
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grid_c_string += QByteArray {6 - grid_c_string.size (), ' '};
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is_standard_ = stdmsg_ (message_c_string.constData (), contest_mode_, grid_c_string.constData (), 22, 6);
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// We're only going to unpack standard messages for CQs && pings...
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// TODO: jsherer - this is a hack for now...
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if(is_standard_){
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is_standard_ = QRegularExpression("^(CQ|DE|QRZ)\\s").match(message_).hasMatch();
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}
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}
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bits_ = bits();
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// don't even try to unpack -24dB frames...they are *very* likely to be false decodes...
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if(snr() <= -24){
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return;
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}
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tryUnpack();
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}
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DecodedText::DecodedText (QString const& js8callmessage, int bits):
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frameType_(Varicode::FrameUnknown),
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message_(js8callmessage),
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isHeartbeat_(false),
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isAlt_(false),
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bits_(bits)
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{
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is_standard_ = QRegularExpression("^(CQ|DE|QRZ)\\s").match(message_).hasMatch();
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tryUnpack();
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}
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bool DecodedText::tryUnpack(){
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if(is_standard_){
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message_ = message_.append(" ");
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return false;
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}
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bool unpacked = false;
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if(!unpacked){
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unpacked = tryUnpackData();
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}
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if(!unpacked){
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unpacked = tryUnpackHeartbeat();
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}
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if(!unpacked){
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unpacked = tryUnpackCompound();
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}
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if(!unpacked){
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unpacked = tryUnpackDirected();
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}
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return unpacked;
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}
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bool DecodedText::tryUnpackHeartbeat(){
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QString m = message().trimmed();
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// directed calls will always be 12+ chars and contain no spaces.
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if(m.length() < 12 || m.contains(' ')){
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return false;
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}
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bool isAlt = false;
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quint8 type = Varicode::FrameUnknown;
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quint8 bits3 = 0;
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QStringList parts = Varicode::unpackHeartbeatMessage(m, &type, &isAlt, &bits3);
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if(parts.isEmpty() || parts.length() < 2){
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return false;
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}
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// Heartbeat Alt Type
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// ---------------
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// 1 0 HB
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// 1 1 CQ
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isHeartbeat_ = true;
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isAlt_ = isAlt;
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extra_ = parts.length() < 3 ? "" : parts.at(2);
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QStringList cmp;
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if(!parts.at(0).isEmpty()){
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cmp.append(parts.at(0));
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}
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if(!parts.at(1).isEmpty()){
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cmp.append(parts.at(1));
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}
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compound_ = cmp.join("/");
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message_ = QString("%1: %2 %3 ").arg(compound_).arg(isAlt ? Varicode::cqString(bits3) : Varicode::hbString(bits3)).arg(extra_);
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frameType_ = type;
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return true;
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}
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bool DecodedText::tryUnpackCompound(){
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auto m = message().trimmed();
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// directed calls will always be 12+ chars and contain no spaces.
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if(m.length() < 12 || m.contains(' ')){
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return false;
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}
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quint8 type = Varicode::FrameUnknown;
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quint8 bits3 = 0;
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auto parts = Varicode::unpackCompoundMessage(m, &type, &bits3);
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if(parts.isEmpty() || parts.length() < 2){
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return false;
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}
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QStringList cmp;
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if(!parts.at(0).isEmpty()){
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cmp.append(parts.at(0));
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}
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if(!parts.at(1).isEmpty()){
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cmp.append(parts.at(1));
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}
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compound_ = cmp.join("/");
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extra_ = parts.length() < 3 ? "" : parts.mid(2).join(" ");
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if(type == Varicode::FrameCompound){
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message_ = QString("%1: ").arg(compound_);
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} else if(type == Varicode::FrameCompoundDirected){
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message_ = QString("%1%2 ").arg(compound_).arg(extra_);
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directed_ = QStringList{ "<....>", compound_ } + parts.mid(2);
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}
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frameType_ = type;
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return true;
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}
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bool DecodedText::tryUnpackDirected(){
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QString m = message().trimmed();
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// directed calls will always be 12+ chars and contain no spaces.
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if(m.length() < 12 || m.contains(' ')){
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return false;
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}
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quint8 type = Varicode::FrameUnknown;
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QStringList parts = Varicode::unpackDirectedMessage(m, &type);
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if(parts.isEmpty()){
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return false;
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}
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if(parts.length() == 3){
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// replace it with the correct unpacked (directed)
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message_ = QString("%1: %2%3 ").arg(parts.at(0), parts.at(1), parts.at(2));
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} else if(parts.length() == 4){
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// replace it with the correct unpacked (directed numeric)
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message_ = QString("%1: %2%3 %4 ").arg(parts.at(0), parts.at(1), parts.at(2), parts.at(3));
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} else {
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// replace it with the correct unpacked (freetext)
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message_ = QString(parts.join(""));
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}
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message_ = message_.replace("APRS: ", "APRS:");
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directed_ = parts;
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frameType_ = type;
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return true;
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}
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bool DecodedText::tryUnpackData(){
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QString m = message().trimmed();
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// data frames calls will always be 12+ chars and contain no spaces.
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if(m.length() < 12 || m.contains(' ')){
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return false;
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}
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QString data = Varicode::unpackDataMessage(m);
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if(data.isEmpty()){
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return false;
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}
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message_ = data;
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frameType_ = Varicode::FrameData;
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return true;
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}
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QStringList DecodedText::messageWords () const
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{
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if (is_standard_)
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{
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// extract up to the first four message words
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return words_re.match (message_).capturedTexts ();
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}
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// simple word split for free text messages
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auto words = message_.split (' ', QString::SkipEmptyParts);
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// add whole message as item 0 to mimic RE capture list
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words.prepend (message_);
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return words;
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}
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QString DecodedText::CQersCall() const
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{
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QRegularExpression callsign_re {R"(^(CQ|DE|QRZ)(\s?DX|\s([A-Z]{2}|\d{3}))?\s(?<callsign>[A-Z0-9/]{2,})(\s[A-R]{2}[0-9]{2})?)"};
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return callsign_re.match (message_).captured ("callsign");
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}
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bool DecodedText::isJT65() const
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{
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return string_.indexOf("#") == column_mode + padding_;
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}
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bool DecodedText::isJT9() const
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{
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return string_.indexOf("@") == column_mode + padding_;
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}
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bool DecodedText::isTX() const
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{
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int i = string_.indexOf("Tx");
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return (i >= 0 && i < 15); // TODO guessing those numbers. Does Tx ever move?
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}
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bool DecodedText::isLowConfidence () const
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{
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return QChar {'?'} == string_.mid (padding_ + column_qsoText + 21, 1);
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}
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int DecodedText::frequencyOffset() const
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{
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return string_.mid(column_freq + padding_,4).toInt();
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}
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int DecodedText::snr() const
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{
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int i1=string_.indexOf(" ")+1;
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return string_.mid(i1,3).toInt();
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}
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float DecodedText::dt() const
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{
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return string_.mid(column_dt + padding_,5).toFloat();
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}
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/*
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2343 -11 0.8 1259 # YV6BFE F6GUU R-08
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2343 -19 0.3 718 # VE6WQ SQ2NIJ -14
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2343 -7 0.3 815 # KK4DSD W7VP -16
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2343 -13 0.1 3627 @ CT1FBK IK5YZT R+02
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0605 Tx 1259 # CQ VK3ACF QF22
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*/
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// find and extract any report. Returns true if this is a standard message
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bool DecodedText::report(QString const& myBaseCall, QString const& dxBaseCall, /*mod*/QString& report) const
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{
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if (message_.size () < 1) return false;
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QStringList const& w = message_.split(" ",QString::SkipEmptyParts);
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if (w.size ()
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&& is_standard_ && (w[0] == myBaseCall
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|| w[0].endsWith ("/" + myBaseCall)
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|| w[0].startsWith (myBaseCall + "/")
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|| (w.size () > 1 && !dxBaseCall.isEmpty ()
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&& (w[1] == dxBaseCall
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|| w[1].endsWith ("/" + dxBaseCall)
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|| w[1].startsWith (dxBaseCall + "/")))))
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{
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QString tt="";
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if(w.size() > 2) tt=w[2];
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bool ok;
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auto i1=tt.toInt(&ok);
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if (ok and i1>=-50 and i1<50)
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{
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report = tt;
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}
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else
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{
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if (tt.mid(0,1)=="R")
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{
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i1=tt.mid(1).toInt(&ok);
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if(ok and i1>=-50 and i1<50)
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{
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report = tt.mid(1);
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}
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}
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}
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}
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return is_standard_;
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}
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// get the first text word, usually the call
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QString DecodedText::call() const
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{
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return words_re.match (message_).captured ("word1");
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}
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// get the second word, most likely the de call and the third word, most likely grid
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void DecodedText::deCallAndGrid(/*out*/QString& call, QString& grid) const
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{
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auto const& match = words_re.match (message_);
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call = match.captured ("word2");
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grid = match.captured ("word3");
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if (contest_mode_ && "R" == grid)
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{
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grid = match.captured ("word4");
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}
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}
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unsigned DecodedText::timeInSeconds() const
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{
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return 3600 * string_.mid (column_time, 2).toUInt ()
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+ 60 * string_.mid (column_time + 2, 2).toUInt()
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+ (padding_ ? string_.mid (column_time + 2 + padding_, 2).toUInt () : 0U);
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}
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/*
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2343 -11 0.8 1259 # YV6BFE F6GUU R-08
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2343 -19 0.3 718 # VE6WQ SQ2NIJ -14
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2343 -7 0.3 815 # KK4DSD W7VP -16
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2343 -13 0.1 3627 @ CT1FBK IK5YZT R+02
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0605 Tx 1259 # CQ VK3ACF QF22
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*/
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QString DecodedText::report() const // returns a string of the SNR field with a leading + or - followed by two digits
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{
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int sr = snr();
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if (sr<-50)
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sr = -50;
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else
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if (sr > 49)
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sr = 49;
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QString rpt;
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rpt.sprintf("%d",abs(sr));
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if (sr > 9)
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rpt = "+" + rpt;
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else
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if (sr >= 0)
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rpt = "+0" + rpt;
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else
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if (sr >= -9)
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rpt = "-0" + rpt;
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else
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rpt = "-" + rpt;
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return rpt;
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}
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