%
% analyze the time code string input
%
% stack: time-str
%
% possible formats are: D:H:M, H:M, M -- D H M, H M
%
":" " " replall
"  " " " replall
"  " " " replall
"  " " " replall
"  " " " replall
trim
" " 1 0 3 parse
third numeric
{
 second numeric
 {
  dup numeric
  {
%
% all three tokens numeric, calc days, hours, minutes
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   rot 24 mul rot add 60 mul add
  }
  {
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% first two tokens numeric, return hours and minutes calc
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   pop exch 60 mul add
  } ifelse
 }
 {
%
% only first token numeric, return as minutes
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  pop2
 } ifelse
}
{
%
% not numeric, return 0 for answer
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 pop3 0
} ifelse
%
% minutes calc return, zero for empty or no valid numerics
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% stack: minutes
%