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|    comp.lang.forth    |    Forth programmers eat a lot of Bratwurst    |    117,927 messages    |
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|    Message 116,890 of 117,927    |
|    dxf to Gerry Jackson    |
|    Re: Parsing timestamps?    |
|    19 Oct 24 12:29:18    |
      From: dxforth@gmail.com              On 19/10/2024 1:46 am, Gerry Jackson wrote:       > On 06/10/2024 08:51, dxf wrote:       >> Is there an easier way of doing this? End goal is a double number       representing centi-secs.       >>       >>       >> empty decimal       >>       >> : SPLIT ( a u c -- a2 u2 a3 u3 ) >r 2dup r> scan 2swap 2 pick - ;       >> : >INT ( adr len -- u ) 0 0 2swap >number 2drop drop ;       >>       >> : /T ( a u -- $hour $min $sec )       >> 2 0 do [char] : split 2swap dup if 1 /string then loop       >> 2 0 do dup 0= if 2rot 2rot then loop ;       >>       >> : .T 2swap 2rot cr >int . ." hr " >int . ." min " >int . ." sec " ;       >>       >> s" 1:2:3" /t .t       >> s" 02:03" /t .t       >> s" 03" /t .t       >> s" 23:59:59" /t .t       >> s" 0:00:03" /t .t       >       > Another solution       >       > : /t ( ca u -- sec min hour )       > 3 \ a count, decremented every recurse       > [: -rot dup 0>       > if 0. 2swap >number 1 /string 2swap drop ( -- ct ca' u' n1 )       > >r rot 1-       > recurse r> swap exit       > then 2drop       > ;] execute       > 0 ?do 0 loop \ 0 hours and minutes if missing in source string       > ;       > : .t cr . ." hr " . ." min " . ." sec " ;       >       > cr       > s" 1:2:3" /t .t       > s" 02:03" /t .t       > s" 03" /t .t       > s" 23:59:59" /t .t       > s" 0:00:03" /t .t       > s" " /t .t       > s" :" /t .t       > s" :53" /t .t       > s" 11/12/13" /t .t \ Different separator       > s" 11::13" /t .t       > s" :::" /t .t       > s" 3:" /t .t       > s" 1:2:" /t .t       >       > \ Results       > 1 hr 2 min 3 sec       > 0 hr 2 min 3 sec       > 0 hr 0 min 3 sec       > 23 hr 59 min 59 sec       > 0 hr 0 min 3 sec       > 0 hr 0 min 0 sec       > 0 hr 0 min 0 sec       > 0 hr 0 min 53 sec       > 11 hr 12 min 13 sec       > 11 hr 0 min 13 sec       > 0 hr 0 min 0 sec       > 0 hr 0 min 3 sec       > 0 hr 1 min 2 sec       >       > The last two could be regarded as wrong but you indicated elsewhere that       they wouldn't occur.              In practice several others too as separators in isolation are unlikely.              > Any non-digit is a separator              That prompted me to look at sjack's code again and found SPLIT could be       omitted:               : (number) ( a u -- ud a' u' ) 0 0 2swap >number ;               : /int ( a u -- a' u' u2 ) (number) 2swap drop ;               : .t cr . ." hr " . ." min " . ." sec " ;               : /t ( a u -- sec min hr )        2>r 0 0 0 2r> begin        /int 5 roll drop -rot dup while 1 /string        repeat 2drop swap rot ;                     1 hr 2 min 3 sec ok       0 hr 2 min 3 sec ok       0 hr 0 min 3 sec ok       23 hr 59 min 59 sec ok       0 hr 0 min 3 sec ok       0 hr 0 min 0 sec ok       0 hr 0 min 0 sec ok       0 hr 0 min 53 sec ok       11 hr 12 min 13 sec ok       11 hr 0 min 13 sec ok       0 hr 0 min 0 sec ok       0 hr 3 min 0 sec ok       1 hr 2 min 0 sec ok              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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