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#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include "config.h"
#define DLEN 25
time_t rawtime;
struct tm *timeinfo;
struct data {
int temp_c;
int temp_f;
int feel_temp_c;
int feel_temp_f;
int wind_speed;
int wind_gust;
char wind_dir_16[4];
int wind_dir_deg;
int vis;
int weather_code;
char weather_desc[DLEN];
} w;
void
error()
{
printf("doom");
exit(1);
return;
}
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();
str_conc_const(s1, s2, res);
return res;
}
char
get_dig(short int u, int x)
{
while (--x)
u /= 10;
return (u % 10) + '0';
}
void
get_file(char *file)
{
int i, of;
of = 0;
for (i = 0; i < 4; ++i)
file[of++] = get_dig(timeinfo->tm_year+1900, 4-i);
file[of++] = '-';
for (i = 0; i < 2; ++i)
file[of++] = get_dig(timeinfo->tm_mon+1, 2-i);
file[of++] = '-';
for (i = 0; i < 2; ++i)
file[of++] = get_dig(timeinfo->tm_mday, 2-i);
file[of++] = '-';
file[of++] = (timeinfo->tm_hour/3) + '0';
file[of] = '\0';
}
void
read_data(char *file)
{
FILE *f = fopen(file, "r");
if (!f)
error();
fscanf(f, "%d\n", &w.temp_c);
fscanf(f, "%d\n", &w.temp_f);
fscanf(f, "%d\n", &w.feel_temp_c);
fscanf(f, "%d\n", &w.feel_temp_f);
fscanf(f, "%d\n", &w.wind_speed);
fscanf(f, "%d\n", &w.wind_gust);
fscanf(f, "%s\n", w.wind_dir_16);
fscanf(f, "%d\n", &w.wind_dir_deg);
fscanf(f, "%d\n", &w.vis);
fscanf(f, "%d\n", &w.weather_code);
fgets(w.weather_desc, DLEN, f);
if (strlen(w.weather_desc) &&
w.weather_desc[strlen(w.weather_desc)-1] == '\n')
w.weather_desc[strlen(w.weather_desc)-1] = '\0';
fclose(f);
return;
}
void
place_holder(char c)
{
switch(c) {
case 'c': printf("%d", w.temp_c); break;
case 'f': printf("%d", w.temp_f); break;
case 'C': printf("%d", w.feel_temp_c); break;
case 'F': printf("%d", w.feel_temp_f); break;
case 's': printf("%d", w.wind_speed); break;
case 'g': printf("%d", w.wind_gust); break;
case 'd': printf("%s", w.wind_dir_16); break;
case 'D': printf("%d", w.wind_dir_deg); break;
case 'v': printf("%d", w.vis); break;
case 'w': printf("%d", w.weather_code); break;
case 'W': printf("%s", w.weather_desc); break;
case '%': printf("%c", '%'); break;
}
return;
}
void
print(char *f)
{
short int sp = 0;
int p = 0;
while (f[p] != '\0') {
if (sp) {
place_holder(f[p]);
sp = 0;
} else {
if (f[p] == '%')
sp = 1;
else
printf("%c", f[p]);
}
++p;
}
return;
}
int
main(int argc, char** argv)
{
char file[28];
char *filename, *tempn;
if (argc < 2)
error();
time(&rawtime);
rawtime += (time_t)5400; /* adds 1.5h because time between data is 3 hours */
timeinfo = localtime(&rawtime);
get_file(file);
if (working_dir[0] == '~') {
tempn = str_conc(getenv("HOME"), &working_dir[1]);
filename = str_conc(tempn,file);
free(tempn);
} else {
filename = str_conc(working_dir,file);
}
read_data(filename);
free(filename);
print(argv[1]);
return 0;
}
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