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#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <json-c/json.h>
#define VERBOSE
#include "config.h"
char *wdir;
void error(const char* restrict format, ...);
int printv(const char* restrict format, ...);
static int _printv(const char* restrict format, va_list args);
void
error(const char* restrict format, ...)
{
va_list args;
va_start(args,format);
_printv(format,args);
va_end(args);
exit(1);
return;
}
int
printv(const char* restrict format, ...)
{
va_list args;
va_start(args,format);
int ret = _printv(format,args);
va_end(args);
return ret;
}
int
_printv(const char* restrict format, va_list args)
{
#ifndef VERBOSE
return 0;
#endif
int ret = vprintf(format,args);
return ret;
}
void
str_conc_const(const char *s1, const char *s2, char *res)
{
const size_t l1 = strlen(s1);
const size_t l2 = strlen(s2);
memcpy(res,s1,l1);
memcpy(res+l1,s2,l2+1);
return;
}
char*
str_conc(const char *s1, const char *s2)
{
const size_t l1 = strlen(s1);
const size_t l2 = strlen(s2);
char* res = malloc(l1 + l2 + 1);
if (res == NULL)
error("Error while concatenating \"%s\" and \"%s\".\n", s1, s2);
str_conc_const(s1, s2, res);
return res;
}
void
parse(char *fn)
{
json_object *weather, *root, *day, *hly, *hour;
char *file, *pref, suf[3];
FILE *fl;
int i, j, s, h;
root = json_object_from_file(fn);
if (!root)
error("Error\n");
/* Assuming no errors */
weather = json_object_object_get(root, "weather");
s = json_object_array_length(weather);
suf[0] = '-';
suf[2] = '\0';
for (i = 0; i < s; i++) {
day = json_object_array_get_idx(weather,i);
hly = json_object_object_get(day, "hourly");
if (!i)
pref = str_conc(wdir,json_object_get_string(json_object_object_get(day, "date")));
else
str_conc_const(wdir,json_object_get_string(json_object_object_get(day, "date")),pref);
h = json_object_array_length(hly);
for (j = 0; j < h; j++) {
suf[1] = j+'0';
if (!i && !j)
file = str_conc(pref,suf);
else
str_conc_const(pref,suf,file);
hour = json_object_array_get_idx(hly,j);
fl = fopen(file,"w");
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "tempC")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "tempF")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "FeelsLikeC")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "FeelsLikeF")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "windspeedKmph")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "WindGustKmph")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "winddir16Point")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "winddirDegree")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "visibility")));
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "weatherCode")));
hour = json_object_array_get_idx(json_object_object_get(hour, "weatherDesc"),0);
fprintf(fl, "%s\n", json_object_get_string(json_object_object_get(hour, "value")));
fclose(fl);
}
}
free(file);
free(pref);
json_object_put(root);
return;
}
int
main(int argc, char** argv)
{
if (argc < 2)
error("Not enough arguments.\n");
if (working_dir[0] == '~') {
wdir = str_conc(getenv("HOME"), &working_dir[1]);
} else {
wdir = working_dir;
}
parse(argv[1]);
}
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