File content as of revision 0:6d53d6d34ac3:

#include <mbed.h>
#include "WeatherHacks.h"

#include "EthernetInterface.h"
#include "HTTPClient.h"
#include "XMLaide.h"

#define RSS_URL      "http://weather.livedoor.com/forecast/rss/area/130010.xml"

#if 0
//Enable debug
#define DBG(x, ...) std::printf("[WeatherHacks : DBG]"x"\r\n", ##__VA_ARGS__);
#define WARN(x, ...) std::printf("[WeatherHacks : WARN]"x"\r\n", ##__VA_ARGS__);
#else
//Disable debug
#define DBG(x, ...)
#define WARN(x, ...)
#endif

#define ERR(x, ...) std::printf("[WeatherHacks : ERR]"x"\r\n", ##__VA_ARGS__);

static HTTPClient http;

void WH_init(void) 
{
    
}

#define LINK_SIZE 100
static void getLink(const char *buff, char *link)
{
    const char *p = buff ;
    p = XML_getTag(p, "item") ; p = XML_getTag(p, "item") ; p = XML_getTag(p, "link") ;
    p = XML_getElement(p, link, LINK_SIZE) ;
}

static const char *getTodayP(const char *p) {
    return XML_getTag(p, "table") ;
}

static const char *getTomorrowP(const char *p) {
    p    = XML_getTag(p, "table") ; p = XML_getTag(p, "table") ;
    return XML_getTag(p, "table") ;
}

#define TEMP_SIZE 5
static const char *getHiTemp(const char *p, char *hi)
{
    p = XML_getTag(p, "table") ; p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ;
    p = XML_getTag(p, "span") ;
    p = XML_getElement(p, hi, 2) ;
    return p ;
}

static const char *getLoTemp(const char *p, char *lo)
{
    p = XML_getTag(p, "tr") ; p = XML_getTag(p, "tr") ;
    p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ;
    p = XML_getTag(p, "span") ;
    p = XML_getElement(p, lo, 2) ;
    return p ;
}

static const char *getPrec(const char *p, char *prec)
{
    p = XML_getTag(p, "th") ; p = XML_getTag(p, "th") ;
    p = XML_getTag(p, "td") ;    p = XML_getTag(p, "td") ; p = XML_getTag(p, "td") ;
    p = XML_getElement(p, prec, 2) ;
    if(strcmp(prec, "--") == 0)strcpy(prec, " 0") ;
    return p ;
}

static void getInfo(const char *buff, char *hi, char *lo, char *prec)
{
    #define JST (9*60*60)
    struct tm t;
    time_t ctTime;
    ctTime = time(NULL) + JST ;
    t  = *localtime(&ctTime);
    const char *p ;
    
    if(t.tm_hour >= 12) {
        p = getTomorrowP(buff) ;
    } else {
        p = getTodayP(buff) ;
    }
    p = getHiTemp(p, hi) ;
    p = getLoTemp(p, lo) ;
    p = getPrec(p, prec) ;
}

#define FREE(p) if(p)free(p)
#define BUFF_SIZE 1024*12

void WH_getInfo(void)
{
    int ret ;

    char *recv = (char *)malloc(BUFF_SIZE) ;
    char *link = (char *)malloc(LINK_SIZE) ;
    char hiTemp[TEMP_SIZE] ;
    char loTemp[TEMP_SIZE] ;
    char prec[TEMP_SIZE] ;
    
    if((recv == NULL) || (link == NULL)){
        FREE(recv) ; FREE(link) ;
        ERR("No Memory, WH_getInfo") ;
        return ;
    }
    
    ret = http.get(RSS_URL, recv, BUFF_SIZE);
    if (!ret) {
        //DBG("Result: %s\n", recv);
    } else {
        ERR("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode());
    }
    getLink(recv, link) ; DBG("link=%s", link) ;
    ret = http.get(link, recv, BUFF_SIZE);
    if (!ret) {
        DBG("Result: %s\n", recv);
    } else {
        ERR("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode());
    }
    getInfo(recv, hiTemp, loTemp, prec) ;
    printf("Hi=%s, Lo=%s, Prec=%s\n", hiTemp, loTemp, prec) ;
    FREE(recv) ; FREE(link) ;
}