Add date block

1 files changed, 53 insertions, 0 deletions

diff --git a/src/blocks/date.c b/src/blocks/date.c
new file mode 100644
index 0000000..01c62c3
--- /dev/null
+++ b/src/blocks/date.c
@@ -0,0 +1,53 @@
+#include <string.h>
+#include <assert.h>
+#include <time.h>
+
+#include "scheme.h"
+
+#include "../any_log.h"
+
+static void block_date_update(block_t *block)
+{
+    time_t epoch = time(NULL);
+    struct tm *loc_time = localtime(&epoch);
+
+    char buffer[64];
+    strftime(buffer, sizeof(buffer), block->state, loc_time);
+
+    free(block->text.text);
+    block->text.text = strcopy(buffer);
+    assert(block->text.text != NULL);
+}
+
+static void block_date_finalize(block_t *block)
+{
+    free(block->state);
+}
+
+static bool block_date_validate(block_t *block, const block_scheme_t *scheme)
+{
+    if (block->text.text == NULL) {
+        log_error("Block '%s' requires key '%s'", block->label, "text");
+        return false;
+    }
+
+    block->state = block->text.text;
+    block->text.text = NULL;
+    return true;
+}
+
+const block_scheme_t block_date_scheme = {
+    .name = "date",
+    .block = {
+        .type = BLOCK_TEXT,
+        .update_interval = {
+            .tv_sec = 1,
+            .tv_nsec = 0,
+        },
+        .update_cb = block_date_update,
+        .finalize_cb = block_date_finalize,
+    },
+    .size = sizeof(char *),
+    .entries = NULL,
+    .validate = block_date_validate,
+};