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authorRich Felker <dalias@aerifal.cx>2012-03-02 00:24:17 -0500
committerRich Felker <dalias@aerifal.cx>2012-03-02 00:24:17 -0500
commitb93b7382d6db5efe51134db2eba1bcbe967d1c82 (patch)
treee675f48baa1d42e2c2d85835adb057f8c0bfe60a /src/time
parent536db2b5ac6b9fee7129417926c59ca12e8dffb0 (diff)
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first try at implementing getdate function
Diffstat (limited to 'src/time')
-rw-r--r--src/time/getdate.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/time/getdate.c b/src/time/getdate.c
new file mode 100644
index 00000000..26a48978
--- /dev/null
+++ b/src/time/getdate.c
@@ -0,0 +1,47 @@
+#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, "r");
+	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);
+dprintf(2, "%s %s\n", s, fmt);
+dprintf(2, "%p %d\n", p, p?*p:0);
+		if (p && !*p) {
+			ret = &tmbuf;
+			goto out;
+		}
+	}
+
+	getdate_err = 7;
+out:
+	if (f) fclose(f);
+	pthread_setcancelstate(cs, 0);
+	return ret;
+}