I wrote a implementation of the command 'ts' for toybox
The only reasonable online standards document I could find on it was outdated,
which is why the -i option exists in my implementation but is not in the
standards document I linked
From fd89fe4da89b079475a04cbb2bf4464d5fca7a36 Mon Sep 17 00:00:00 2001
From: Oliver Webb <aquahobby...@proton.me>
Date: Thu, 7 Sep 2023 23:37:50 -0500
Subject: [PATCH] A implementation of the ts command
---
toys/pending/ts.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 toys/pending/ts.c
diff --git a/toys/pending/ts.c b/toys/pending/ts.c
new file mode 100644
index 00000000..475f3a22
--- /dev/null
+++ b/toys/pending/ts.c
@@ -0,0 +1,54 @@
+/* ts.c - timestamp input lines
+ *
+ * Copyright 2023 Oliver Webb <aquahobby...@proton.me>
+ *
+ * See https://linux.die.net/man/1/ts
+
+USE_TS(NEWTOY(ts, "i", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_MAYFORK))
+
+config TS
+ bool "ts"
+ default n
+ help
+ usage: ts [-i] [FORMAT]
+
+ timestamp input using strftime(3) The default formatting being "%b %d %H:%M:%S"
+ -i Incremental timestamps (Changes Default Formatting to "%H:%M:S")
+*/
+
+#define FOR_ts
+#include "toys.h"
+
+static time_t starttime;
+static int len;
+static char *buffer, *format;
+
+static char *getftime(void)
+{
+ // A easy way to do incremental times is pretend it's 1970
+ time_t curtime = time(NULL);
+ struct tm *submtime;
+ if (FLAG(i)) {
+ curtime -= starttime;
+ submtime = gmtime(&curtime);
+ } else submtime = localtime(&curtime);
+ strftime(buffer,len,format,submtime);
+ return buffer;
+}
+
+void ts_main(void)
+{
+ starttime = time(NULL);
+ format = "%b %d %T";
+ if (FLAG(i)) format = "%T";
+ if (toys.optargs[0]) format = toys.optargs[0];
+ // The arbitrary malloc size is because (On English locales), the maximum
+ // length of a strftime sequence is 10 bytes (%F and %s). In the worst case every
+ // 2 bytes translate to 10, A expansion ratio of 5. The 16 byte padding is to
+ // account for locales with names that exceed 10 bytes.
+ len = (strlen(format)*5)+16;
+ buffer = xmalloc(len);
+
+ char *line;
+ while ((line = xgetline(stdin))) xprintf("%s %s\n",getftime(),line);
+}
--
2.34.1
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