mirror of
https://github.com/Llewellynvdm/conky.git
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4d1d328de9
git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky@5 7f574dfc-610e-0410-a909-a81674777703
156 lines
3.3 KiB
C
156 lines
3.3 KiB
C
#include "conky.h"
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#include <string.h>
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#include "ftp.h"
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#include <math.h>
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#include <pthread.h>
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#include "metarinfo.h"
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/* for threads */
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static int status = 0;
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int calculateRelativeHumidity(int temp, int dew) {
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float rh = 0.0;
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rh = 100.0 * powf ((112 - (0.1 * temp)+dew ) / (112 + (0.9 * temp)), 8);
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return (int)rh;
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}
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int calculateWindChill(int temperatureC, int windKn) {
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double windKmh = knTokph(windKn);
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return (int)(13.112+0.6215*temperatureC - 11.37*powf(windKmh,.16) + 0.3965*temperatureC*powf(windKmh,.16) );
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}
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int knTokph(int knSpeed ){
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return (knSpeed * 1.852);
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}
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const char *calculateWindDirectionString(int degree) {
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if (degree < 22.5) {
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return "North";
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} else if (degree < 67.5){
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return "Northeast";
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} else if (degree < 112.5) {
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return "East";
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} else if (degree < 157.5) {
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return "Southeast";
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} else if (degree < 202.5){
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return "South";
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} else if (degree < 247.5) {
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return "Southwest";
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} else if (degree < 292.5) {
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return "West";
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} else if (degree < 337.5){
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return "Northwest";
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} else {
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return "North";
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}
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}
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const char*calculateShortWindDirectionString(int degree){
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if (degree < 22.5) {
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return "N";
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} else if (degree < 67.5){
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return "NE";
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} else if (degree < 112.5) {
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return "E";
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} else if (degree < 157.5) {
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return "SE";
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} else if (degree < 202.5){
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return "S";
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} else if (degree < 247.5) {
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return "SW";
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} else if (degree < 292.5) {
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return "W";
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} else if (degree < 337.5){
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return "NW";
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} else {
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return "N";
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}
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}
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void ftpData(void *userData, const char *data, int len)
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{
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if (len <= 0)
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return;
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if ( data != NULL ){
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line = strdup(data);
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}
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}
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void *fetch_ftp( ) {
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// try three times if it fails
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int tries = 0;
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do {
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if (tries > 0) {
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/* this happens too often, so i'll leave it commented fprintf(stderr, "METAR update failed for some reason, retry %i\n", tries); */
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sleep(15); /* give it some time in case the server is busy or down */
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}
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tries++;
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if ( strlen(metar_station) != 8 ){
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fprintf(stderr,"You didn't supply a valid station code\n");
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return;
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}
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if (metar_server == NULL)
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metar_server = strdup("weather.noaa.gov");
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if (metar_path == NULL)
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metar_path = strdup("/data/observations/metar/stations");
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int res;
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initFtp();
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res = connectFtp(metar_server, 0);
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if (res < 0) {
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fprintf(stderr, "Couldn't connect to %s\n", metar_server);
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return;
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}
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res = changeFtpDirectory(metar_path);
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if (res < 0) {
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fprintf(stderr, "Metar update failed (couldn't CWD to %s)\n", metar_path);
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disconnectFtp();
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return;
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}
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if (res == 0) {
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fprintf(stderr,
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"Metar update failed\n");
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return;
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}
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if (getFtp(ftpData, NULL, metar_station) < 0) {
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fprintf(stderr, "Failed to get file %s\n", metar_station);
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}
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disconnectFtp();
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if ( line != NULL ){
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dcdNetMETAR(line, &data);
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free(line);
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line = NULL;
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ftp_ok = 1;
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metar_worked = 1;
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}
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else {
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ftp_ok = 0;
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}
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} while (ftp_ok == 0 && tries < 3);
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status = 1;
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}
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static pthread_t thread1;
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void update_metar() {
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int iret1;
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if (!status) {
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status = 2;
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iret1 = pthread_create( &thread1, NULL, fetch_ftp, NULL);
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}
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else if (status == 2) { /* thread is still running. what else can we do? */
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return;
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}
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else {
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pthread_join( thread1, NULL);
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status = 2;
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iret1 = pthread_create( &thread1, NULL, fetch_ftp, NULL);
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}
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}
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