Abbreviations, simple

Abbreviations, simple is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

The use of   abbreviations   (also sometimes called synonyms, nicknames, AKAs, or aliases)   can be an
easy way to add flexibility when specifying or using commands, sub─commands, options, etc.

For this task, the following   command table   will be used:

   add 1  alter 3  backup 2  bottom 1  Cappend 2  change 1  Schange  Cinsert 2  Clast 3
   compress 4 copy 2 count 3 Coverlay 3 cursor 3  delete 3 Cdelete 2  down 1  duplicate
   3 xEdit 1 expand 3 extract 3  find 1 Nfind 2 Nfindup 6 NfUP 3 Cfind 2 findUP 3 fUP 2
   forward 2  get  help 1 hexType 4  input 1 powerInput 3  join 1 split 2 spltJOIN load
   locate 1 Clocate 2 lowerCase 3 upperCase 3 Lprefix 2  macro  merge 2 modify 3 move 2
   msg  next 1 overlay 1 parse preserve 4 purge 3 put putD query 1 quit  read recover 3
   refresh renum 3 repeat 3 replace 1 Creplace 2 reset 3 restore 4 rgtLEFT right 2 left
   2  save  set  shift 2  si  sort  sos  stack 3 status 4 top  transfer 3  type 1  up 1

Notes concerning the above   command table:

•   it can be thought of as one long literal string   (with blanks at end-of-lines)
•   it may have superfluous blanks
•   it may be in any order   (not sorted)
•   it may be in any case (lower/upper/mixed)
•   the user input(s) may be in any case (upper/lower/mixed)
•   commands will be restricted to the Latin alphabet   (A ──► Z,   a ──► z)
•   a command is followed by an optional number, which indicates the minimum abbreviation
•   o,   ov,   ove,   over,   overL,   overla   are all acceptable abbreviations for   overlay
•   if there isn't a number after the command,   then there isn't an abbreviation permitted

Task

•   The command table needn't be verified/validated.
•   Write a function to validate if the user "words"   (given as input)   are valid   (in the command table).
•   If the word   is   valid,   then return the full uppercase version of that "word".
•   If the word isn't valid,   then return the lowercase string:   *error*       (7 characters).
•   A blank input   (or a null input)   should return a null string.
•   Show all output here.

An example test case to be used for this task

For a user string of:

 riG   rePEAT copies  put mo   rest    types   fup.    6       poweRin

the computer program should return the string:

 RIGHT REPEAT *error* PUT MOVE RESTORE *error* *error* *error* POWERINPUT

Related tasks

•   Abbreviations, easy
•   Abbreviations, automatic

REXX

<lang rexx>/*REXX program validates a user "word" against a "command table" with abbreviations.*/ parse arg uw /*obtain optional arguments from the CL*/ if uw= then uw= 'riG rePEAT copies put mo rest types fup. 6 poweRin' say 'user words: ' uw

@= 'add 1 alter 3 backup 2 bottom 1 Cappend 2 change 1 Schange Cinsert 2 Clast 3',

  'compress 4 copy 2 count 3 Coverlay 3 cursor 3  delete 3 Cdelete 2  down 1  duplicate',
  '3 xEdit 1 expand 3 extract 3  find 1 Nfind 2 Nfindup 6 NfUP 3 Cfind 2 findUP 3 fUP 2',
  'forward 2  get  help 1 hexType 4  input 1 powerInput 3  join 1 split 2 spltJOIN load',
  'locate 1 Clocate 2 lowerCase 3 upperCase 3 Lprefix 2  macro  merge 2 modify 3 move 2',
  'msg  next 1 overlay 1 parse preserve 4 purge 3 put putD query 1 quit  read recover 3',
  'refresh renum 3 repeat 3 replace 1 Creplace 2 reset 3 restore 4 rgtLEFT right 2 left',
  '2  save  set  shift 2  si  sort  sos  stack 3 status 4 top  transfer 3  type 1  up 1'

say 'full words: ' validate(uw) /*display the result(s) to the terminal*/ exit /*stick a fork in it, we're all done. */ /*──────────────────────────────────────────────────────────────────────────────────────*/ validate: procedure expose @; arg x; upper @ /*ARG capitalizes all the X words. */

         $=                                     /*initialize the return string to null.*/
            do j=1  to words(x);   _=word(x, j) /*obtain a word from the     X  list.  */
              do k=1  to words(@); a=word(@, k) /*get a legitmate command name from  @.*/
              L=word(@, k+1)                    /*··· and maybe get it's abbrev length.*/
              if datatype(L, 'W')  then k=k + 1       /*yuppers, it's an abbrev length.*/
                                   else L=length(a)   /*nope,  it can't be abbreviated.*/
              if abbrev(a, _, L)   then do; $=$ a;  iterate j;  end  /*is valid abbrev?*/
              end   /*k*/
            $=$ '*error*'                       /*processed the whole list, not valid. */
            end     /*j*/
         return strip($)                        /*elide the superfluous leading blank. */</lang>

output   when using the default input:

user words:  riG   rePEAT copies  put mo   rest    types   fup.    6       poweRin
full words:  RIGHT REPEAT *error* PUT MOVE RESTORE *error* *error* *error* POWERINPUT