Kojo / WeatherInfo

Get weather Information

WeatherHacks.cpp@1:8655f1720450, 2015-06-28 (annotated)

Committer:
takashikojo
Date:
Sun Jun 28 00:17:02 2015 +0000
Revision:
1:8655f1720450
Parent:
0:6d53d6d34ac3
Child:
2:76b812680942
Added Weather Hacks

Who changed what in which revision?

UserRevisionLine numberNew contents of line
takashikojo 0:6d53d6d34ac3 1 #include <mbed.h>
takashikojo 0:6d53d6d34ac3 2 #include "WeatherHacks.h"
takashikojo 0:6d53d6d34ac3 3
takashikojo 0:6d53d6d34ac3 4 #include "EthernetInterface.h"
takashikojo 0:6d53d6d34ac3 5 #include "HTTPClient.h"
takashikojo 0:6d53d6d34ac3 6 #include "XMLaide.h"
takashikojo 0:6d53d6d34ac3 7
takashikojo 0:6d53d6d34ac3 8 #define RSS_URL "http://weather.livedoor.com/forecast/rss/area/130010.xml"
takashikojo 0:6d53d6d34ac3 9
takashikojo 0:6d53d6d34ac3 10 #if 0
takashikojo 0:6d53d6d34ac3 11 //Enable debug
takashikojo 0:6d53d6d34ac3 12 #define DBG(x, ...) std::printf("[WeatherHacks : DBG]"x"\r\n", ##__VA_ARGS__);
takashikojo 0:6d53d6d34ac3 13 #define WARN(x, ...) std::printf("[WeatherHacks : WARN]"x"\r\n", ##__VA_ARGS__);
takashikojo 0:6d53d6d34ac3 14 #else
takashikojo 0:6d53d6d34ac3 15 //Disable debug
takashikojo 0:6d53d6d34ac3 16 #define DBG(x, ...)
takashikojo 0:6d53d6d34ac3 17 #define WARN(x, ...)
takashikojo 0:6d53d6d34ac3 18 #endif
takashikojo 0:6d53d6d34ac3 19
takashikojo 0:6d53d6d34ac3 20 #define ERR(x, ...) std::printf("[WeatherHacks : ERR]"x"\r\n", ##__VA_ARGS__);
takashikojo 0:6d53d6d34ac3 21
takashikojo 1:8655f1720450 22 extern HTTPClient httpClient;
takashikojo 0:6d53d6d34ac3 23
takashikojo 0:6d53d6d34ac3 24 void WH_init(void)
takashikojo 0:6d53d6d34ac3 25 {
takashikojo 0:6d53d6d34ac3 26
takashikojo 0:6d53d6d34ac3 27 }
takashikojo 0:6d53d6d34ac3 28
takashikojo 0:6d53d6d34ac3 29 #define LINK_SIZE 100
takashikojo 0:6d53d6d34ac3 30 static void getLink(const char *buff, char *link)
takashikojo 0:6d53d6d34ac3 31 {
takashikojo 0:6d53d6d34ac3 32 const char *p = buff ;
takashikojo 0:6d53d6d34ac3 33 p = XML_getTag(p, "item") ; p = XML_getTag(p, "item") ; p = XML_getTag(p, "link") ;
takashikojo 0:6d53d6d34ac3 34 p = XML_getElement(p, link, LINK_SIZE) ;
takashikojo 0:6d53d6d34ac3 35 }
takashikojo 0:6d53d6d34ac3 36
takashikojo 0:6d53d6d34ac3 37 static const char *getTodayP(const char *p) {
takashikojo 0:6d53d6d34ac3 38 return XML_getTag(p, "table") ;
takashikojo 0:6d53d6d34ac3 39 }
takashikojo 0:6d53d6d34ac3 40
takashikojo 0:6d53d6d34ac3 41 static const char *getTomorrowP(const char *p) {
takashikojo 0:6d53d6d34ac3 42 p = XML_getTag(p, "table") ; p = XML_getTag(p, "table") ;
takashikojo 0:6d53d6d34ac3 43 return XML_getTag(p, "table") ;
takashikojo 0:6d53d6d34ac3 44 }
takashikojo 0:6d53d6d34ac3 45
takashikojo 0:6d53d6d34ac3 46 #define TEMP_SIZE 5
takashikojo 0:6d53d6d34ac3 47 static const char *getHiTemp(const char *p, char *hi)
takashikojo 0:6d53d6d34ac3 48 {
takashikojo 0:6d53d6d34ac3 49 p = XML_getTag(p, "table") ; p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ;
takashikojo 0:6d53d6d34ac3 50 p = XML_getTag(p, "span") ;
takashikojo 0:6d53d6d34ac3 51 p = XML_getElement(p, hi, 2) ;
takashikojo 0:6d53d6d34ac3 52 return p ;
takashikojo 0:6d53d6d34ac3 53 }
takashikojo 0:6d53d6d34ac3 54
takashikojo 0:6d53d6d34ac3 55 static const char *getLoTemp(const char *p, char *lo)
takashikojo 0:6d53d6d34ac3 56 {
takashikojo 0:6d53d6d34ac3 57 p = XML_getTag(p, "tr") ; p = XML_getTag(p, "tr") ;
takashikojo 0:6d53d6d34ac3 58 p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ;
takashikojo 0:6d53d6d34ac3 59 p = XML_getTag(p, "span") ;
takashikojo 0:6d53d6d34ac3 60 p = XML_getElement(p, lo, 2) ;
takashikojo 0:6d53d6d34ac3 61 return p ;
takashikojo 0:6d53d6d34ac3 62 }
takashikojo 0:6d53d6d34ac3 63
takashikojo 0:6d53d6d34ac3 64 static const char *getPrec(const char *p, char *prec)
takashikojo 0:6d53d6d34ac3 65 {
takashikojo 0:6d53d6d34ac3 66 p = XML_getTag(p, "th") ; p = XML_getTag(p, "th") ;
takashikojo 0:6d53d6d34ac3 67 p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ;
takashikojo 0:6d53d6d34ac3 68 p = XML_getElement(p, prec, 2) ;
takashikojo 0:6d53d6d34ac3 69 if(strcmp(prec, "--") == 0)strcpy(prec, " 0") ;
takashikojo 1:8655f1720450 70 if(strcmp(prec, "0%") == 0)strcpy(prec, " 0") ;
takashikojo 0:6d53d6d34ac3 71 return p ;
takashikojo 0:6d53d6d34ac3 72 }
takashikojo 0:6d53d6d34ac3 73
takashikojo 0:6d53d6d34ac3 74 static void getInfo(const char *buff, char *hi, char *lo, char *prec)
takashikojo 0:6d53d6d34ac3 75 {
takashikojo 0:6d53d6d34ac3 76 #define JST (9*60*60)
takashikojo 0:6d53d6d34ac3 77 struct tm t;
takashikojo 0:6d53d6d34ac3 78 time_t ctTime;
takashikojo 0:6d53d6d34ac3 79 ctTime = time(NULL) + JST ;
takashikojo 0:6d53d6d34ac3 80 t = *localtime(&ctTime);
takashikojo 0:6d53d6d34ac3 81 const char *p ;
takashikojo 0:6d53d6d34ac3 82
takashikojo 0:6d53d6d34ac3 83 if(t.tm_hour >= 12) {
takashikojo 0:6d53d6d34ac3 84 p = getTomorrowP(buff) ;
takashikojo 0:6d53d6d34ac3 85 } else {
takashikojo 0:6d53d6d34ac3 86 p = getTodayP(buff) ;
takashikojo 0:6d53d6d34ac3 87 }
takashikojo 0:6d53d6d34ac3 88 p = getHiTemp(p, hi) ;
takashikojo 0:6d53d6d34ac3 89 p = getLoTemp(p, lo) ;
takashikojo 0:6d53d6d34ac3 90 p = getPrec(p, prec) ;
takashikojo 0:6d53d6d34ac3 91 }
takashikojo 0:6d53d6d34ac3 92
takashikojo 0:6d53d6d34ac3 93 #define FREE(p) if(p)free(p)
takashikojo 0:6d53d6d34ac3 94 #define BUFF_SIZE 1024*12
takashikojo 0:6d53d6d34ac3 95
takashikojo 1:8655f1720450 96 void WH_getInfo(char *buff, int size)
takashikojo 0:6d53d6d34ac3 97 {
takashikojo 0:6d53d6d34ac3 98 int ret ;
takashikojo 1:8655f1720450 99 #define LINK_SIZE 200
takashikojo 1:8655f1720450 100 char link[LINK_SIZE] ;
takashikojo 0:6d53d6d34ac3 101 char hiTemp[TEMP_SIZE] ;
takashikojo 0:6d53d6d34ac3 102 char loTemp[TEMP_SIZE] ;
takashikojo 0:6d53d6d34ac3 103 char prec[TEMP_SIZE] ;
takashikojo 0:6d53d6d34ac3 104
takashikojo 1:8655f1720450 105 ret = httpClient.get(RSS_URL, buff, size);
takashikojo 0:6d53d6d34ac3 106 if (!ret) {
takashikojo 0:6d53d6d34ac3 107 //DBG("Result: %s\n", recv);
takashikojo 0:6d53d6d34ac3 108 } else {
takashikojo 1:8655f1720450 109 ERR("Error - ret = %d - HTTP return code = %d\n", ret, httpClient.getHTTPResponseCode());
takashikojo 0:6d53d6d34ac3 110 }
takashikojo 1:8655f1720450 111
takashikojo 1:8655f1720450 112 getLink(buff, link) ; DBG("link=%s\n", link) ;
takashikojo 1:8655f1720450 113 ret = httpClient.get(link, buff, size) ;
takashikojo 1:8655f1720450 114 getInfo(buff, hiTemp, loTemp, prec);
takashikojo 0:6d53d6d34ac3 115 printf("Hi=%s, Lo=%s, Prec=%s\n", hiTemp, loTemp, prec) ;
takashikojo 0:6d53d6d34ac3 116 }