From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/time/getdate.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 src/time/getdate.c

(limited to 'src/time/getdate.c')

diff --git a/src/time/getdate.c b/src/time/getdate.c
new file mode 100644
index 0000000..420cd8e
--- /dev/null
+++ b/src/time/getdate.c
@@ -0,0 +1,46 @@
+#include <time.h>
+#include <pthread.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int getdate_err;
+
+struct tm *getdate(const char *s)
+{
+	static struct tm tmbuf;
+	struct tm *ret = 0;
+	char *datemsk = getenv("DATEMSK");
+	FILE *f = 0;
+	char fmt[100], *p;
+	int cs;
+
+	pthread_setcancelstate(PTHREAD_CANCEL_DEFERRED, &cs);
+
+	if (!datemsk) {
+		getdate_err = 1;
+		goto out;
+	}
+
+	f = fopen(datemsk, "rbe");
+	if (!f) {
+		if (errno == ENOMEM) getdate_err = 6;
+		else getdate_err = 2;
+		goto out;
+	}
+
+	while (fgets(fmt, sizeof fmt, f)) {
+		p = strptime(s, fmt, &tmbuf);
+		if (p && !*p) {
+			ret = &tmbuf;
+			goto out;
+		}
+	}
+
+	if (ferror(f)) getdate_err = 5;
+	else getdate_err = 7;
+out:
+	if (f) fclose(f);
+	pthread_setcancelstate(cs, 0);
+	return ret;
+}
-- 
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