initial commit -- upload

README.md

@@ -1,2 +1,4 @@
 # cclock  
+#### Simply C program to display the time and temperature without too much fuss, made for home use.
   
+Build with ```gcc -Wall -Wextra -pedantic -std=c11 clock.c -lncurses -o clock```

clock.c

@@ -0,0 +1,211 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include <ncurses.h>
+#include <time.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static volatile sig_atomic_t running = 1;
+static volatile sig_atomic_t resized = 0;
+
+static void handle_sigint(int sig) { (void)sig; running = 0; }
+static void handle_winch(int sig) { (void)sig; resized = 1; }
+
+/* ---------------- Config ---------------- */
+typedef struct {
+    char api_key[128];
+    char location[64];
+    char units[16];
+} config_t;
+
+/* Simple TOML parser for [weather] section */
+static bool load_config_toml(config_t *cfg, const char *path) {
+    FILE *f = fopen(path, "r");
+    if (!f) return false;
+
+    bool in_weather_section = false;
+    while (!feof(f)) {
+        char line[256];
+        if (!fgets(line, sizeof(line), f)) break;
+
+        /* Remove comments */
+        char *hash = strchr(line, '#');
+        if (hash) *hash = '\0';
+
+        /* Strip leading/trailing whitespace */
+        char *start = line;
+        while (*start && (*start == ' ' || *start == '\t')) start++;
+        char *end = start + strlen(start) - 1;
+        while (end > start && (*end == ' ' || *end == '\t' || *end == '\n' || *end == '\r')) *end-- = '\0';
+
+        if (strlen(start) == 0) continue;
+
+        if (start[0] == '[' && start[strlen(start)-1] == ']') {
+            if (strncmp(start+1, "weather", 7) == 0) in_weather_section = true;
+            else in_weather_section = false;
+            continue;
+        }
+
+        if (!in_weather_section) continue;
+
+        char key[32], val[128];
+        if (sscanf(start, "%31[^=]= \"%127[^\"]\"", key, val) == 2) {
+            char *k_end = key + strlen(key) - 1;
+            while (k_end > key && (*k_end == ' ' || *k_end == '\t')) *k_end-- = '\0';
+
+            if (strcmp(key, "api_key") == 0) strncpy(cfg->api_key, val, sizeof(cfg->api_key)-1);
+            else if (strcmp(key, "location") == 0) strncpy(cfg->location, val, sizeof(cfg->location)-1);
+            else if (strcmp(key, "units") == 0) strncpy(cfg->units, val, sizeof(cfg->units)-1);
+        }
+    }
+
+    fclose(f);
+    return cfg->api_key[0] && cfg->location[0];
+}
+
+/* ---------------- libcurl callback ---------------- */
+struct mem {
+    char *data;
+    size_t size;
+};
+
+static size_t write_cb(void *ptr, size_t size, size_t nmemb, void *userdata) {
+    struct mem *m = (struct mem *)userdata;
+    size_t total = size * nmemb;
+
+    if (m->size + total < 10240) {
+        memcpy(m->data + m->size, ptr, total);
+        m->size += total;
+        m->data[m->size] = '\0';
+    }
+    return total;
+}
+
+/* ---------------- Fetch temperature ---------------- */
+bool fetch_temp_owm(const config_t *cfg, char *out, size_t out_size) {
+    if (!cfg || !out) return false;
+
+    CURL *curl = curl_easy_init();
+    if (!curl) return false;
+
+    char url[512];
+    snprintf(url, sizeof(url),
+             "https://api.openweathermap.org/data/2.5/weather?q=%s&units=%s&appid=%s",
+             cfg->location, cfg->units[0] ? cfg->units : "metric", cfg->api_key);
+
+    char buffer[10240] = {0};
+    struct mem m = { buffer, 0 };
+
+    curl_easy_setopt(curl, CURLOPT_URL, url);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &m);
+    curl_easy_setopt(curl, CURLOPT_USERAGENT, "tty-clock-weather/1.0");
+
+    CURLcode res = curl_easy_perform(curl);
+    curl_easy_cleanup(curl);
+
+    if (res != CURLE_OK) return false;
+
+    char *p = strstr(buffer, "\"temp\":");
+    if (!p) return false;
+    p += 7;
+
+    double temp = atof(p);
+    char unit = (cfg->units[0] && strcmp(cfg->units, "imperial") == 0) ? 'F' : 'C';
+    snprintf(out, out_size, "%.0f°%c %s", temp, unit, cfg->location);
+
+    return true;
+}
+
+/* ---------------- Main ---------------- */
+int main(int argc, char **argv) {
+    config_t cfg = {0};
+    char config_path[512];
+    snprintf(config_path, sizeof(config_path), "%s/.config/cclock/config", getenv("HOME"));
+
+    if (!load_config_toml(&cfg, config_path)) {
+        printf("Failed to load config from %s\n", config_path);
+        return 1;
+    }
+
+    bool twelve_hour = false;
+    for (int i = 1; i < argc; i++)
+        if (strcmp(argv[i], "-t") == 0) twelve_hour = true;
+
+    signal(SIGINT, handle_sigint);
+    signal(SIGWINCH, handle_winch);
+
+    initscr();
+    cbreak();
+    noecho();
+    curs_set(0);
+    keypad(stdscr, TRUE);
+    nodelay(stdscr, TRUE);
+
+    curl_global_init(CURL_GLOBAL_DEFAULT);
+
+    char time_buf[16], date_buf[11], temp_buf[64];
+    time_t last_fetch = 0;
+    const int refresh_interval = 600; /* 10 minutes */
+
+    if (!fetch_temp_owm(&cfg, temp_buf, sizeof(temp_buf)))
+        strncpy(temp_buf, "N/A", sizeof(temp_buf));
+
+    while (running) {
+        if (resized) {
+            endwin();
+            refresh();
+            clear();
+            resized = 0;
+        }
+
+        clear();
+
+        time_t now = time(NULL);
+        struct tm *tm_now = localtime(&now);
+        if (!tm_now) break;
+
+        const char *time_fmt = twelve_hour ? "%I:%M %p" : "%H:%M";
+        strftime(time_buf, sizeof(time_buf), time_fmt, tm_now);
+        strftime(date_buf, sizeof(date_buf), "%m/%d/%Y", tm_now);
+
+        if (difftime(now, last_fetch) >= refresh_interval) {
+            if (!fetch_temp_owm(&cfg, temp_buf, sizeof(temp_buf)))
+                strncpy(temp_buf, "N/A", sizeof(temp_buf));
+            last_fetch = now;
+        }
+
+        int rows, cols;
+        getmaxyx(stdscr, rows, cols);
+
+        int time_x = (cols - strlen(time_buf)) / 2;
+        int y_mid = rows / 2;
+        attron(A_BOLD);
+        mvprintw(y_mid, time_x, "%s", time_buf);
+        attroff(A_BOLD);
+
+        int date_x = (cols - strlen(date_buf)) / 2;
+        mvprintw(y_mid + 1, date_x, "%s", date_buf);
+
+        int temp_x = (cols - strlen(temp_buf)) / 2;
+        mvprintw(y_mid + 2, temp_x, "%s", temp_buf);
+
+        mvprintw(rows - 1, 0, "Press 'q' to quit");
+
+        refresh();
+
+        int ch = getch();
+        if (ch == 'q' || ch == 'Q') break;
+
+        sleep(1);
+    }
+
+    curl_global_cleanup();
+    endwin();
+    return 0;
+}