Add a new function timespec_to_u32bit that handles a very simplistic

time format and converts it to a duration in seconds represented as a
u32bit. This is from Config::option_as_time, which is now implemented
simply as: return timespec_to_u32bit(option(key))

1 files changed, 31 insertions, 0 deletions

diff --git a/src/parsing.cpp b/src/parsing.cpp
index 59c0e3324..550cd3586 100644
--- a/src/parsing.cpp
+++ b/src/parsing.cpp
@@ -55,6 +55,37 @@ std::string to_string(u64bit n, u32bit min_len)
    }
 
 /*************************************************
+* Convert a string into a time duration          *
+*************************************************/
+u32bit timespec_to_u32bit(const std::string& timespec)
+   {
+   if(timespec == "")
+      return 0;
+
+   const char suffix = timespec[timespec.size()-1];
+   std::string value = timespec.substr(0, timespec.size()-1);
+
+   u32bit scale = 1;
+
+   if(Charset::is_digit(suffix))
+      value += suffix;
+   else if(suffix == 's')
+      scale = 1;
+   else if(suffix == 'm')
+      scale = 60;
+   else if(suffix == 'h')
+      scale = 60 * 60;
+   else if(suffix == 'd')
+      scale = 24 * 60 * 60;
+   else if(suffix == 'y')
+      scale = 365 * 24 * 60 * 60;
+   else
+      throw Decoding_Error("timespec_to_u32bit: Bad input " + timespec);
+
+   return scale * to_u32bit(value);
+   }
+
+/*************************************************
 * Parse a SCAN-style algorithm name              *
 *************************************************/
 std::vector<std::string> parse_algorithm_name(const std::string& namex)