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    12-hour to 24-hour clock conversion

    Help wanted · · · – – – · · ·
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    • Alan Kilborn
      Alan Kilborn @Sophia Cruz last edited by

      @Sophia-Cruz

      This seems to do it:

      Find: ^(?:(01)|(02)|(03)|(04)|(05)|(06)|(07)|(08)|(09)|(10)|(11)|(12))\.(\d\d)\.(\d\d)\.(\d{3}) (?:(A)|(P))M
      Repl: (?{12}?{16}00:12)(?{1}?{17}13:01)(?{2}?{17}14:02)(?{3}?{17}15:03)(?{4}?{17}16:04)(?{5}?{17}17:05)(?{6}?{17}18:06)(?{7}?{17}19:07)(?{8}?{17}20:08)(?{9}?{17}21:09)(?{10}?{17}22:10)(?{11}?{17}23:11):$13:$14:$15
      Search mode: Regular expression

      I tried to be “fancy” and do the “AM” and “PM” part with “named groups” so that the replacement is more “readable”, but I ran into some trouble with that. If I get it working, and it truly is more readable, I may post that as well…

      Alan Kilborn Sophia Cruz 2 Replies Last reply Reply Quote 5
      • Alan Kilborn
        Alan Kilborn @Alan Kilborn last edited by Alan Kilborn

        I got it to work with named groups. The problem was, and it makes it less elegant, is that mixing numbered and named capture groups seems to mess things up. So I had to artificially name group # 1 as “one” instead of just using its number. I’ll let the reader decide if this version is more readable than the previous:

        Find: ^(?:(?<one>01)|(?<two>02)|(?<three>03)|(?<four>04)|(?<five>05)|(?<six>06)|(?<seven>07)|(?<eight>08)|(?<nine>09)|(?<ten>10)|(?<eleven>11)|(?<twelve>12))\.(?<mins>\d\d)\.(?<secs>\d\d)\.(?<ms>\d{3}) (?:(?<am>A)|(?<pm>P))M

        Repl: (?{twelve}?{am}00:12)(?{one}?{pm}13:01)(?{two}?{pm}14:02)(?{three}?{pm}15:03)(?{four}?{pm}16:04)(?{five}?{pm}17:05)(?{six}?{pm}18:06)(?{seven}?{pm}19:07)(?{eight}?{pm}20:08)(?{nine}?{pm}21:09)(?{ten}?{pm}22:10)(?{eleven}?{pm}23:11):$+{mins}:$+{secs}:$+{ms}

        Search mode: Regular expression

        (And I fully expect a “holy cow batman!” from @Meta-Chuh on that one!)

        (And yes, doing 12 differently from the others in the replace was intentional, as it is a little “out of place” in the conversion)

        Ekopalypse Meta Chuh 2 Replies Last reply Reply Quote 5
        • Ekopalypse
          Ekopalypse @Alan Kilborn last edited by

          @Alan-Kilborn

          LOL - if I could I would upvote it 12 times. :-D

          Alan Kilborn 1 Reply Last reply Reply Quote 2
          • Alan Kilborn
            Alan Kilborn @Ekopalypse last edited by Alan Kilborn

            @Ekopalypse

            Sometimes things get upvoted too quickly for people to have tried it out to verify/duplicate results. This is somewhat bad as if something doesn’t work (and the thread dies right there) it looks to future readers like a good solution…

            BTW I think the “replace” is very readable with the named groups, but the “find” suffers…slightly…

            Ekopalypse 1 Reply Last reply Reply Quote 1
            • Ekopalypse
              Ekopalypse @Alan Kilborn last edited by

              @Alan-Kilborn

              :-D for me this looks like what we call - bohemian villages.
              But I can participate on that thread now - I’ve tested it, and it looks good to me :-)
              Let’s see what the OP thinks about it.

              1 Reply Last reply Reply Quote 2
              • Sophia Cruz
                Sophia Cruz @Alan Kilborn last edited by

                @Alan-Kilborn it works perfectly. Thank you so much!

                1 Reply Last reply Reply Quote 3
                • Sophia Cruz
                  Sophia Cruz last edited by

                  2nd solution is less confusing but both still produces the desired output. :D

                  1 Reply Last reply Reply Quote 1
                  • Meta Chuh
                    Meta Chuh @Alan Kilborn last edited by

                    @Alan-Kilborn

                    holy cow batman! 😄👍

                    Sometimes things get upvoted too quickly for people to have tried it out to verify/duplicate results.

                    i guess sometimes your writing style is so worth an upvote, that people give you one, even if they have tested it’s content to fail.

                    greetings,
                    robin

                    Alan Kilborn 1 Reply Last reply Reply Quote 1
                    • Alan Kilborn
                      Alan Kilborn @Meta Chuh last edited by Alan Kilborn

                      @Meta-Chuh said:

                      your writing style…worth an upvote…

                      My writing style? Nah. I don’t have the flowery prose of a @PeterJones or the diplomatic panache of a @Meta-Chuh . [Basically I don’t wanna put that kind of effort in–to the typing part–obviously with the above regexes staring us in the face I’ll put a little time/effort into THAT aspect. Trying to provide some hopefully accurate help, maybe without the greatest english composition accompanying.]

                      1 Reply Last reply Reply Quote 2
                      • guy038
                        guy038 last edited by guy038

                        Hi, @sophia-cruz, @alan-kilborn, @eko-palypse, @meta-chuh and All,

                        Here is a variant of the Alan’s solution, which is less restrictive :

                        • It just needs that the hour should be located after a non-word, instead of the beginning of line, due to the \b syntax

                        • It does not care of the synbol between the different parts of the hour ( just changing the \. syntax by . ! )

                        • It allows the milliseconds part to be absent ( .MMM ), in the hour, with the (?:.(\d{3}))? syntax

                        • It allows the AM or PM part to come next to the digits, with \x20?

                        • It does not care of the case , allowing the four syntaxes am, pm, AM and PM with the regex (?i:(AM)|PM)

                        Note :
                        In the remplacement regex, when group 17 exists ( AM ), I just rewrite the hour part ( \1 ), except when hour = 12, where the logic is reversed !


                        So, assuming this sample text :

                        12.00.47 AM
                        	12.58.18.387 am
                        01 07 28 421 AM
                        03:17:31:934am
                        05.43.26.582 AM
                                07:23:03.732 am
                        09.31.08AM
                        11.57.59,003 am
                        ~~~~~~~~~~~~~~~~~~~~
                        12.00.45 PM
                        	12.56.49.203 pm
                        01 04 51 387 PM
                        03:15:33:632pm
                        05.22.00.814 PM
                                07:33:55.548 pm
                        09.45.26PM
                        11.59.11,247 pm
                        

                        With the regex S/R below :

                        SEARCH :    \b(0(?:(1)|(2)|(3)|(4)|(5)|(6)|(7)|(8)|(9))|(10)|(11)|(12)).(\d\d).(\d\d)(?:.(\d{3}))?\x20?(?i:(AM)|PM)
                                      │    │   │   │   │   │   │   │   │   │    │    │    │     │      │         │                │
                                      1    2   3   4    5   6   7   8   9   10   11   12    13    14     15        16               17   <-- Groups
                        
                        REPLACE :   (?2(?17\1:13))(?3(?17\1:14))(?4(?17\1:15))(?5(?17\1:16))(?6(?17\1:17))(?7(?17\1:18))(?8(?17\1:19))(?9(?17\1:20))(?10(?17\1:21))(?11(?17\1:22))(?12(?17\1:23))(?13(?{17}00:\1)):$14:$15(?16\:$16)
                        

                        We would obtain :

                        00:00:47
                        	00:58:18:387
                        01:07:28:421
                        03:17:31:934
                        05:43:26:582
                                07:23:03:732
                        09:31:08
                        11:57:59:003
                        ~~~~~~~~~~~~~~~~~~~~
                        12:00:45
                        	12:56:49:203
                        13:04:51:387
                        15:15:33:632
                        17:22:00:814
                                19:33:55:548
                        21:45:26
                        23:59:11:247
                        

                        Best Regards,

                        guy038

                        1 Reply Last reply Reply Quote 3
                        • guy038
                          guy038 last edited by guy038

                          Hi, All,

                          When I woke up this morning, I immediately saw a simplification ( in length ! ) of the replacement regex ;-))

                          So, my last version is :

                          SEARCH \b(0(?:(1)|(2)|(3)|(4)|(5)|(6)|(7)|(8)|(9))|(10)|(11)|(12)).(\d\d).(\d\d)(?:.(\d{3}))?\x20?(?i:(AM)|PM)

                          REPLACE (?13(?{17}00:\1):(?17\1:(?{2}13)(?{3}14)(?{4}15)(?{5}16)(?{6}17)(?{7}18)(?{8}19)(?{9}20)(?{10}21)(?{11}22)(?{12}23))):$14:$15(?16\:$16)

                          BR

                          guy038

                          1 Reply Last reply Reply Quote 3
                          • guy038
                            guy038 last edited by

                            Hi, all,

                            As the (?...:....) regex structure, of the Boost regex library is not so common, you may feel a bit lost about the replacement regex syntax !

                            So, here is, below, the algorithmic translation of the replacement regex, of my previous post :

                            If group 13 exists    #  Case hour = '12'
                            
                                then
                            
                                    If group 17 exists    #  String 'AM' or 'am', after the digits
                              
                                        then
                            
                                            Write the string '00'
                            
                                        else
                            
                                            Rewrite the group 1 contents    #  Actually, the hour '12'
                            
                                else
                            
                                    If group 17 exists    #  String 'AM' or 'am', after the digits
                            
                                        then
                            
                                            Rewrite the group 1 contents    #  The 'hour' digits, so the values  '01'  or  '02'  or  ...... '11'
                            
                                        else    #  The 'hour' digits, when followed with the string 'PM' or 'pm'
                            
                                            If group  2 exists then write the string '13'    #  Case hour = '01'
                            
                                            If group  3 exists then write the string '14'    #  Case hour = '02'
                            
                                            If group  4 exists then write the string '15'    #  Case hour = '03'
                            
                                            If group  5 exists then write the string '16'    #  Case hour = '04'
                            
                                            If group  6 exists then write the string '17'    #  Case hour = '05'
                            
                                            If group  7 exists then write the string '18'    #  Case hour = '06'
                            
                                            If group  8 exists then write the string '19'    #  Case hour = '07'
                            
                                            If group  9 exists then write the string '20'    #  Case hour = '08'
                            
                                            If group 10 exists then write the string '21'    #  Case hour = '09'
                            
                                            If group 11 exists then write the string '22'    #  Case hour = '10'
                            
                                            If group 12 exists then write the string '23'    #  Case hour = '11'
                            
                                   endif
                            
                            endif
                            
                            Write the string ':'
                            
                            Rewrite the group 14    #  Minutes digits
                            
                            Write the string ':'
                            
                            Rewrite the group 15    #  Seconds digits
                            
                            if group 16 exits       #  Milleseconds digits
                            
                                then
                            
                                    write the string ':'
                            
                                    write the group 16 contents    # Milleseconds digits
                            endif
                            

                            BR

                            guy038

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