Merge tag 'v0.21.18'

release v0.21.18

src/time/ISO8601.cxx

@@ -58,6 +58,8 @@ FormatISO8601(std::chrono::system_clock::time_point tp)
 	return FormatISO8601(GmTime(tp));
 }
 
+#ifndef _WIN32
+
 static std::pair<unsigned, unsigned>
 ParseTimeZoneOffsetRaw(const char *&s)
 {
@@ -108,6 +110,67 @@ ParseTimeZoneOffset(const char *&s)
 	return d;
 }
 
+static const char *
+ParseTimeOfDay(const char *s, struct tm &tm,
+	       std::chrono::system_clock::duration &precision) noexcept
+{
+	/* this function always checks "end==s" to work around a
+	   strptime() bug on OS X: if nothing could be parsed,
+	   strptime() returns the input string (indicating success)
+	   instead of nullptr (indicating error) */
+
+	const char *end = strptime(s, "%H", &tm);
+	if (end == nullptr || end == s)
+		return end;
+
+	s = end;
+	precision = std::chrono::hours(1);
+
+	if (*s == ':') {
+		/* with field separators: now a minute must follow */
+
+		++s;
+
+		end = strptime(s, "%M", &tm);
+		if (end == nullptr || end == s)
+			return nullptr;
+
+		s = end;
+		precision = std::chrono::minutes(1);
+
+		/* the "seconds" field is optional */
+		if (*s != ':')
+			return s;
+
+		++s;
+
+		end = strptime(s, "%S", &tm);
+		if (end == nullptr || end == s)
+			return nullptr;
+
+		precision = std::chrono::seconds(1);
+		return end;
+	}
+
+	/* without field separators */
+
+	end = strptime(s, "%M", &tm);
+	if (end == nullptr || end == s)
+		return s;
+
+	s = end;
+	precision = std::chrono::minutes(1);
+
+	end = strptime(s, "%S", &tm);
+	if (end == nullptr || end == s)
+		return s;
+
+	precision = std::chrono::seconds(1);
+	return end;
+}
+
+#endif
+
 std::pair<std::chrono::system_clock::time_point,
 	  std::chrono::system_clock::duration>
 ParseISO8601(const char *s)
@@ -138,22 +201,9 @@ ParseISO8601(const char *s)
 	if (*s == 'T') {
 		++s;
 
-		if ((end = strptime(s, "%T", &tm)) != nullptr)
-			precision = std::chrono::seconds(1);
-		else if ((end = strptime(s, "%H%M%S", &tm)) != nullptr)
-			/* no field separators */
-			precision = std::chrono::seconds(1);
-		else if ((end = strptime(s, "%H%M", &tm)) != nullptr)
-			/* no field separators */
-			precision = std::chrono::minutes(1);
-		else if ((end = strptime(s, "%H:%M", &tm)) != nullptr)
-			precision = std::chrono::minutes(1);
-		else if ((end = strptime(s, "%H", &tm)) != nullptr)
-			precision = std::chrono::hours(1);
-		else
+		s = ParseTimeOfDay(s, tm, precision);
+		if (s == nullptr)
 			throw std::runtime_error("Failed to parse time of day");
-
-		s = end;
 	}
 
 	auto tp = TimeGm(tm);