InitialHEADmaster

4 files changed, 33 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+miniclock
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
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+# Miniclock
+
+Tiny clock app, outputs time accurately each second. Meant to be used with
+status bar apps like i3-blocks.
diff --git a/build.sh b/build.sh
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+++ b/build.sh
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+#!/bin/sh
+
+gcc -O3 miniclock.c -o miniclock
diff --git a/miniclock.c b/miniclock.c
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+++ b/miniclock.c
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+#include <stdio.h>
+#include <time.h>
+
+int main() {
+    struct timespec ts = {0};
+    struct tm tm = {0};
+
+    for (;;) {
+        // print time
+        clock_gettime(CLOCK_REALTIME, &ts);
+        localtime_r(&ts.tv_sec, &tm);
+        printf("%s", asctime(&tm));
+        fflush(stdout);
+
+        // delay until next second
+        struct timespec td = {
+            .tv_sec = 0,
+            .tv_nsec = 1000000000 - ts.tv_nsec,
+        };
+
+        nanosleep(&td, NULL);
+    }
+
+    return 0;
+}