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<?php
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// $Id: amateur_radio.inc,v 1.1 2008/10/15 19:41:44 ppicazo Exp $
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// function to calculate latitude from maidenhead grid locator
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function loc2lat($locator) {
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$ascii = array("0" => 48, "1" => 49, "2" => 50, "3" => 51, "4" => 52, "5" => 53, "6" => 54, "7" => 55, "8" => 56, "9" => 57, ":" => 58, ";" => 59, "<" => 60, "=" => 61, ">" => 62, "?" => 63, "@" => 64, "A" => 65, "B" => 66, "C" => 67, "D" => 68, "E" => 69, "F" => 70, "G" => 71, "H" => 72, "I" => 73, "J" => 74, "K" => 75, "L" => 76, "M" => 77, "N" => 78, "O" => 79, "P" => 80, "Q" => 81, "R" => 82, "S" => 83, "T" => 84, "U" => 85, "V" => 86, "W" => 87, "X" => 88, "Y" => 89, "Z" => 90);
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$locator = strtoupper($locator);
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$lat = ($ascii[$locator[1]] - 65) * 10 + ($ascii[$locator[3]] - 48) + ($ascii[$locator[5]] - 65 + 0.5) / 24 - 90;
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return $lat;
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}
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// function to calculate longitude from maidenhead grid locator
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function loc2lon($locator)
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{
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$ascii = array("0" => 48, "1" => 49, "2" => 50, "3" => 51, "4" => 52, "5" => 53, "6" => 54, "7" => 55, "8" => 56, "9" => 57, ":" => 58, ";" => 59, "<" => 60, "=" => 61, ">" => 62, "?" => 63, "@" => 64, "A" => 65, "B" => 66, "C" => 67, "D" => 68, "E" => 69, "F" => 70, "G" => 71, "H" => 72, "I" => 73, "J" => 74, "K" => 75, "L" => 76, "M" => 77, "N" => 78, "O" => 79, "P" => 80, "Q" => 81, "R" => 82, "S" => 83, "T" => 84, "U" => 85, "V" => 86, "W" => 87, "X" => 88, "Y" => 89, "Z" => 90);;
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$locator = strtoupper($locator);
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$lon = ($ascii[$locator[0]] - 65) * 20 + ($ascii[$locator[2]] - 48) * 2 + ($ascii[$locator[4]] - 65 + 0.5) / 12 - 180;
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return $lon;
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}
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// fucntion that parses a single line from an ADIF logbook file
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// high priority to properly comment this code
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function parseADIF_Line($strInput) {
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$retVal = null;
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$valid_record = 0;
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$n = 0;
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while ($n < strlen($strInput)) {
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$tag = "";
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$length = "";
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$datatype = "";
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$value = "";
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while ($n < strlen($strInput) && $strInput[$n] != "<") {
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$n++;
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}
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$n++;
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while ($n < strlen($strInput) && $strInput[$n] != ">" && $strInput[$n] != ":" && $strInput[$n] != "<") {
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$tag .= $strInput[$n];
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$n++;
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}
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if ($n < strlen($strInput) && $strInput[$n] == ":") {
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$n++;
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while ($n < strlen($strInput) && $strInput[$n] != ">" && $strInput[$n] != ":" && $strInput[$n] != "<") {
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$length .= $strInput[$n];
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$n++;
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}
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$length = intval($length);
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}
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if ($n < strlen($strInput) && $strInput[$n] == ":") {
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$n++;
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while ($n < strlen($strInput) && $strInput[$n] != ">" && $strInput[$n] != ":" && $strInput[$n] != "<") {
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$datatype .= $strInput[$n];
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$n++;
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}
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}
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if ($n < strlen($strInput) && $strInput[$n] == ">") {
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$n++;
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for($y = 0; $y < $length; $y++) {
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$value .= $strInput[$n];
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$n++;
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}
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}
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$tmp = null;
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if (strlen($tag)) {
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if (strtolower($tag) == "eor") {
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$valid_record = true;
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}
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if (strlen($value)) {
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$tmp = $value;
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}
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$retVal[$tag] = $tmp;
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}
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$n++;
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}
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if ($valid_record) {
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return $retVal;
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}
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return null;
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}
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// function that opens an ADIF logbook file and imports it in to a database table
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// high priority to properly comment this code
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// also high priority to make this efficiently import ADIF files without line breaks or with extra line breaks
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function adif_import($filename) {
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$myHam = new ham();
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$handle = @fopen($filename, "r");
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if ($handle) {
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while (!feof($handle) || $x < 22) {
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$buffer = fgets($handle, 4096);
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$line = parseADIF_Line($buffer);
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if ($line)
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{
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if (isset($line['mode'])) {
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@$mode[$line['mode']]++;
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}
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$date = null;
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if (isset($line['qso_date']) && isset($line['time_on'])) {
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$date = date("Y-m-d H:i:s",strtotime($line['qso_date'] . " " . $line['time_on']));
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}
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if (isset($line['gridsquare'])) {
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$grid_sql = "'" . $line['gridsquare'] . "'";
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}
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else
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{
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$grid_sql = "NULL";
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}
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if (isset($line['my_gridsquare'])) {
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$mygrid_sql = "'" . $line['my_gridsquare'] . "'";
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}
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else
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{
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$mygrid_sql = "NULL";
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}
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if (isset($line['dxcc'])) {
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$dxcc_sql = "'" . $line['dxcc'] . "'";
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}
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else
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{
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$dxcc_sql = "NULL";
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}
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if (isset($line['freq'])) {
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$freq_sql = "'" . $line['freq'] . "'";
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$band_sql = "'" . $myHam->freq_band($line['freq']) . "'";
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}
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else
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{
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$freq_sql = "NULL";
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$band_sql = "NULL";
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}
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if (isset($line['mode'])) {
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$mode_sql = "'" . $line['mode'] . "'";
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}
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else
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{
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$mode_sql = "NULL";
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}
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$sql = "INSERT INTO `ham_qso` (`qso_time`, `qso_call`, `qso_remote_grid`, `qso_local_grid`, `qso_dxcc`, `qso_mode`, `qso_band`, `qso_freq`) VALUES ('" .
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$date . "', '" . $line['call'] . "', " . $grid_sql . ", " . $mygrid_sql . ", " . $dxcc_sql . ", " . $mode_sql . ", " . $band_sql . ", " . $freq_sql . ");";
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$result = @db_query($sql);
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}
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$x++;
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}
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fclose($handle);
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}
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return 0;
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}
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?>
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