$T.REX

From Rosetta Code

$T.REX[edit]

This is the   $T.REX   (REXX) program which is used by many other REXX programs to display error or informational message(s),
some of the options are:

  •   in color(s)     (if supported)
  •   highlights (in color) parts (up to 8 unique parts) of the text     (if supported)
  •   write text to a file
  •   breaks the text into multiple lines
  •   adds indentation
  •   justifies the text: left/right/center/justify   (auto-fill)
  •   add blank lines before and/or after the displaying of text
  •   boxing (around) the text
  •   add spacing around the text inside the box
  •   only showing specific lines of the text messages
  •   suppressing specific lines of the text messages
  •   translation of certain characters in the text
  •   allowing other characters to be used for blanks
  •   repeating a text
  •   allows remarks in the text
  •   writes the message, waits for a confirmation to proceed
  •   delaying (waiting) after the text is displayed
  •   showing a scale and/or a ruler above/below the text message(s)
  •   supports hex/dec/bit strings
  •   changing the case of the text
  •   reverses the text
  •   inverts the bits for certain characters
  •   sounds alarm (beeps) after the text is displayed     (if supported)
  •   displays the text in reverse video (if supported)
  •   displays the text in (big) block letters
  •   clear the screen after or before the displaying of text
  •   allows user-define option character, the default is   .     (period)
  •   and many other options


The help for the   $T   REXX program is included here   ──►   $T.HEL.


The   $T   REXX program makes use of   $ERR   REXX program which is used to display error messages (via   $T).
The   $ERR   REXX program is included here   ──►   $ERR.REX.


The   $T   REXX program makes use of   $BLOCK   REXX program which is used to generate text to display text in (big) blocked letters (via   $T).
The   $BLOCK   REXX program is included here   ──►   $BLOCK.REX.


The   $T   REXX program makes use of   LINESIZE   BIF   which returns the terminals width (linesize).
Some REXXes don't have a   LINESIZE   BIF, so one is included here   ──►   LINESIZE.REX.


The   $T   REXX program makes use of   SCRSIZE   BIF which returns the terminals width (linesize) and depth.
Some REXXes don't have a   SCRSIZE   BIF, so one is included here   ──►   SCRSIZE.REX.


The   $T   REXX program makes use of   DELAY   BIF which delays (sleeps) for a specified amount of seconds.
Some REXXes don't have a   DELAY   BIF, so one is included here   ──►   DELAY.REX.


The   $T   REXX program makes use of   SOUND   BIF which produces sounds via the PC speaker.
Some REXXes don't have a   SOUND   BIF, so one is included here   ──►   SOUND.REX.


REXX programs not included are   $H   which shows help and other documentation.

/*REXX program to perform various functions in displaying text to the console (screen). */
 
/* There be many dragons below. */
 
trace off
 
parse arg ! /*obtain original arguments. */
if !all(0) then exit 0 /*test request for documentation.*/
 
zz = !! /*save the original arguments. */
if !cms then address '' /*if CMS, then use fast ADDRESS. */
 
signal on halt /*be able to handle a HALT. */
signal on noValue /*catch REXX vars with noValue. */
signal on syntax /*catch REXX syntax errors. */
 
numeric digits 300 /*be able to handle some big 'uns*/
 
hues=space( 'BLACK 0;30', /*define some colors for DOS. */
'BROWN 0;33',
'DEFAULT 1;37',
'GRAY 1;37',
'BLUE 1;34',
'GREEN 1;32',
'TURQUOISE 1;36',
'RED 1;31',
'PINK 1;35',
'YELLOW 1;33',
'WHITE 1;37',
'BRITE 1;37') /*colors for DOS via ANSI.SYS */
 
_= /*(below) set some vars ──> NULL */
parse var _ ?. @ color. colorC. ahics ehics hold lz more onlyo onlys,
scr0 shics VMout VScolor VSdisp x1 x2
 
@abc = 'abcdefghijklmnopqrstuvwxyz'
@abcU = @abc
upper @abcU
 
#ms = 0
?.a = 0
?.b = 0
?.block = 0
?.e = 0
?.end = 0
?.i = 0
?.ks = 0
?.L = 0
?.p = 0
?.q = 0
?.r = 0
?.ruler = 0
?.s = 0
?.scale = 0
?.ts = 0
?.x = 0
?.z = 0
boxing = 0
highL = 0
LLd = 0
LLk = 0
LLx = 0
maxhic = 0
 
## = 1
hue# = 1
minhic = 1
?.t = 1
 
?.bd = .2
?.bf = 800
?.bs = 2
?.o = 9999
?.rulerb = ' '
?.scaleb = ' '
?.scaled = .
?.scalep = '+'
?.use = .
esc = '1b'x"["
 
his= 'H() H{} H[] H<> H≤≥ H«» H/\'
#his= words(his)
 
do jh=1 for #his
hh.jh= substr( word(his, jh), 2)
end /*jh*/
 
colorSupport= !pcrexx | !r4 | !roo /*colors are supported by these. */
 
boxCH = '+-+|+-+|' /*define some boxing characters. */
if !ebcdic then boxCH = 'acbfbcfabbbfabfa'x /*¼┐╝·╗┐½· <──single box. */
if !dos then boxCH = 'c9cdbbbabccdc8ba'x /*╔═╗║╝═╚║ <──double box. */
 
if colorSupport then do /*use pre-saved color values. */
_= translate( !var('SCREEN'), , ";,") /*envVar.*/
if \datatype( space(_, 0), "W") then _= '36 40'
scr0= esc || translate(0 _, ';', " ")'m'
colorC.0= scr0
colorC.1= esc"1;33m"
end
 
 
 
do jz=1 while zz\==''
if ?.end==1 | pos('=',zz)==0 | pos(" "?.use,' 'zz)==0 then do
@= @ zz
leave
end
if left(zz,1)==' ' then lz=lz" "
parse var zz yy1 2 yy2 3 1 yy ' ' zz
 
 
if yy1==?.use & pos('=',yy)\==0 & datatype(yy2, "U") then
do 1 /*process "dot" options if has =.*/
parse var yy 2 _ "=" dotv 2 _1 3
 
if datatype(_, 'U') then /*is the option in uppercase? */
if length(_)==1 then do /*is the option just one letter? */
if _=='H' then ?.hi.1= dotv
else  ?._= dotv
iterate jz
end
else select /*option is more then one letter.*/
when _=='BIN' then yy= valn("'"dotv"'B", 'BIN', "B")
when _=='BOX' then do
if dotv=="" then ?.BOX= boxCH
else ?.BOX= dotv
iterate jz
end
when _=='DEC' then yy= valn("'"dotv"'D", 'DEC', "D")
when _=='INV' then yy= .inv(dotv)
when _=='HEX' then yy= valn("'"dotv"'X",' HEX', "X")
when _=='USE' then do
dotv= tb(dotv, "USE", .)
iterate jz
end
otherwise  ?._= dotv
iterate jz
end /*select*/
 
 
if _1=='H' then do /*special handling for: .Hxx= */
_= wordpos(_, his) /*see the HIS variable above.*/
if _\==0 then do
 ?.hi._= dotv
iterate jz
end
end
end /*do 1*/
 
 
if @=='' then @= lz || yy
else @= @ yy
lz=
end /*jz*/
 
 
 
if left(@, 1)==' ' then @= substr(@, 2) /*handle this special case. */
 
if ?.a\==0 then call .a
if ?.a\==0 then call .b
if ?.block\==0 then call .block
if ?.c\=='' then call .c
if ?.d\=='' then call .d
if ?.e\==0 then call wn 'E',0,99,sd()
?.eb= tb(?.eb, 'EB')
if ?.ef\=='' then call .ef
if ?.f\=='' then call .f
 
do _j=1 for #his
_= ?.hi._j
if _\=='' & \!regina then do
call colors _, "H"hh._j, _j
highL= 1
end
end /*_j*/
 
hue.1= colorC.0
 
if ?.i\==0 then do
call wn 'I',0,sw()
 ?.ib= tb(?.ib, 'IB')
end
 
if ?.j\=='' then call .j
if ?.k\=='' then ?.k = valn(?.k, "K")
if ?.kd\=='' then ?.kd= valn(?.kd, "KD")
if ?.k\=='' then if ?.kd\=="" then call er 61, '.K= .KD='
if ?.ks\==0 then call .ks
if ?.L\==0 then call .L
if ?.o\==9999 then call .o
 
if ?.p\==0 then do
call wn 'P',-99,99
 ?.pb= tb(?.pb, 'PB')
end
 
if ?.q\==0 then call wn 'Q',0,1
if ?.r\==0 then call wn "R",0,99
?.r= ?.r + 1
if ?.ruler\==0 then call .ruler
if ?.s\==0 then call .s
?.s= ?.s + 1
if ?.scale\==0 then call .scale
if ?.t\==1 then call .t
if ?.u\=='' then call .u
?.ub= tb(?.ub,'UB')
if ?.ut\=='' then call .ut
if ?.v\=='' then call .v
?.xb= tb(?.xb,'XB')
if ?.z\==0 then call wn 'Z',0,99,,"N"
if ?.box\=='' then call .box
if highL then call highLight
indent= copies(?.ib,?.i)
if ?.x\==0 then call .x
@= copies(@, ?.r)
ll= length(@)
if ?.ub\==' ' then @= translate(@, ?.ub, " ")
_= length(?.ut) % 2
if _\==0 then @= translate(@, right(?.ut, _), left(?.ut, _) )
tx.1= @
xk= ?.k || ?.kd
if xk\=='' then call .xk
if LLk\==0 then LL= LLk
 
if ?.block\==0 then tLL= 12 + max(LL - 1, 0) * (12 + ?.bs)
else tLL= LL
 
 
do jt=1 for ?.t
if jt\==1 then if jt\==?.t then call VEReb ?.ts,?.tsb
 
do jj=1 for ##
if jj\==1 then call VEReb ?.ks,?.ksb
 
if boxing then _= left(tx.jj, tLL)
else _= tx.jj
 
if ?.v=='R' then _= reverse(_)
 
if ?.u\=='' then select
when ?.u=='A' then nop
when ?.u=='U' then upper _
when ?.u=='L' then _= lower(_)
when ?.u=='F' then _= proper(_)
when ?.u=='W' then do
__=
do jw=1 for words(_)
__= __ proper( word(_, jw) )
end /*jw*/
 
_= strip(__)
end
end /*select*/
 
if ?.block==0 then call tellIt _
else call blocker
end /*jj*/
end /*jt*/
 
 
call VEReb ?.e,?.eb
if boxing then call ms bx.7 || copies(bx.6, LLx + tLL + 2)bx.5
call beeps ?.b
call .p
if ?.ruler<0 then call inches ?.ruler,0
if ?.scale<0 then call inches ?.scale,1
 
select
when highL then call sayHighlight
when \highL & (?.c=='BRITE' | ?.c=="BRIGHT") then call sayBright
when ?.L\==0 then call sayAline
otherwise call sayNline
end /*select*/
 
if ?.c\=='' then call VMcolor VMout,space(VScolor VSdisp)
if ?.b<0 then call call beeps ?.b
if ?.z\==0 then call .z
if ?.ruler>0 then call inches ?.ruler,0
if ?.scale>0 then call inches ?.scale,1
_= abs(?.a)
 
if _==99 & \?.q then !cls
else do min(99, _)
call wit bline
end /*min···*/
 
if ?.w\=='' then call .w
 
if !pcrexx then if ?.q & LLd>79 then if LLd>sw() then say
 
/*(above) PC-REXX bug: wrapped lines are*/
/* overwritten during cleanup. */
return 0
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.a: call wn 'A',-99,99,sd()
 ?.ab= tb(?.ab, 'AB')
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.b: call wn 'B',-99,99,sd()
 
if ?.bd\==.2 then do
_= translate(?.bd, , ',')
__= _
do while __\==''
parse var __  ?.bd __
call wn 'BD', .1, 9, ,"N"
end /*while*/
 ?.bd= _
end
 
if ?.bf\==800 then do
_= translate(?.bf, , ',')
__= _
do while __\==''
parse var __  ?.bf __
call wn 'BF', 1, 20000
end /*while*/
 ?.bf= _
end
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.block: call wn 'BLOCK',-12,12
 
if ?.bs\==2 then call wn 'BS', -12, sw()
if ?.bc\=='' then ?.bc = tb(?.bc, "BC")
 
 ?.bb= tb(?.bb, 'BB')
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.box: _= ?.box
upper _
if _=='*NONE*' then ?.box=
boxing= ?.box\==''
if \boxing then return
 
if _=='SINGLELINE' then _= boxCH
if length(_)>8 then call er 30, '.BOX='_ "boxcharacters 1 8"
 
 ?.box= left(_, 8, right(_,1) )
 
do _=1 for 8
bx._= substr(?.box, _, 1)
end /*_*/
 
_= verify(@, ' ') - 1
if _>0 then @= @ || copies(" ", _)
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.c: call colors ?.c, 'C', 0
 
if !cms then do
call cp 'QUERY SCREEN',1
parse var cp.1 "VMOUT" VMout
'QUERY VSCREEN CMS ALL (LIFO'
if rc==0 then pull "(" . . VScolor VSdisp .
 
if ?.c=='BRITE' then call VMcolor "DEFAULT NONE"
else call VMcolor color.0 ?.d, color.0  ?.d
end
 
if \colorSupport then ?.c=
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.d: upper ?.d
_=  ?.d
 
if \(abbrev('BRITE', _,3) |,
abbrev("BRIGHT", _,3) |,
abbrev('HIGHLIGHT', _) |,
abbrev("NONE", _,3) |,
abbrev('REVVIDEO', _,3) |,
abbrev("UNDERLINE", _,3) ) then call er 55, _ ".D="
 
if !regina then ?.d= /*Regina can't handle DISP's. */
else if left(_, 1)=='H' then highL= 1
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
ef: if ?.f\=='' then call er 61, '.F= .EF=' /*conflicting options.*/
 ?.f = ?.ef
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.f: _= ?.f /*File where the text is written.*/
if !cms then do
_= translate(_, , '/,') /*try to translate to CMS format.*/
if words(_)>3 then call er 10, ?.f
 ?.f= _ word(subword(_, 2)  !fn, 1) word( subword(_, 3) 'A1', 1)
end
 
__= lastpos("\", _)
if !dos &  ?.ef=='' & __\==0 then call $mkdir left(_, __)
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.inv: return x2c( b2x( translate( x2b( c2x( arg(1) ) ), 01, 10) ) )
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.j: upper ?.j
if ?.j=='' then ?.j= 'N' /*Justify (or not) the text. */
else ?.j= left(?.j,1) /*just use the first letter of .J*/
 
if pos(?.j, "ACJLNR")==0 then call er 55, ?.j '.J='
if ?.j== 'A' then ?.j= substr( copies('LRC', 30), random(1, 90), 1)
 
 ?.jb= tb(?.jb, 'JB') /*while we're here, handle JB. */
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.ks: call wn 'KS', 0, 99, sw()
 ?.ksb = tb(?.ksb, 'KSB') /*blank lines between karate chop*/
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.L: upper ?.L /*Line(s) for the text is shown. */
 
if !cms then do
'$QWHAT DSC'
if rc==4 then ?.L= 0
end
 
if ?.L=='CMSG' then ?.L= "*"
 
call wn 'L',-sd(),sd()
 
if ?.L<0 then ?.L= sd() - ?.L
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.o: call wn 'O',-999,999,9999
 
if ?.o<0 then do
onlyo= -?.o
 ?.o= 9999
end
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.p: if ?.q then return /*Post (writting) blank lines. */
_= ?.p
 
if _>98 |,
_<0 then do 1
if !cms & _>9998 then call CPmore
 !cls
if \!cms then leave /*1*/
 
if _>9998 & more\=='' then call CP 'TERMINAL MORE' more
if _>99999998 & hold\=='' then call CP 'TERMINAL HOLD' hold
if _>99999998 & hold\=='' then call CP 'TERMINAL HOLD' hold
end /*1*/
 
do abs(_) while _<99
 
bline= strip(indent || x1 || copies(?.ab, tLL+4*boxing)x2, 'T')
 
if boxing then call ms bx.1 || copies(bx.2, LLx + tLL + 2)bx.3
caLL VEReb ?.e,?.eb
call wit bline
end /*abs*/
do _=1 to -?.a
call wit bline
end /*_*/
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.ruler: call wn 'RULER', -sw(), sw() /*RULER draws a "ruler" line. */
 ?.rulerb= tb(?.rulerb, 'RULERB')
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.s: call wn "S", -999, 999, 999 /*Skip (or suppress) line(s). */
 
if ?.s<0 then do
if left(?.o, 1)=='-' then /*check for conflicting options*/
call er 61,"O="?.o 'S='?.s "(both can't be negative)"
onlys = -?.s
 ?.s = 0
end
 
if left(?.o, 1)=="-" & left(?.s, 1)=='-' then
call er 61,"O="?.o 'S='?.s "(both can't be negative)"
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.scale: call wn 'SCALE', -sw(), sw() /*SCALE draws a "scale" line. */
 
 ?.scaleb= tb(?.scaleb, 'SCALEB')
 ?.scaled= tb(?.scaled, 'SCALED', .)
 ?.scalep= tb(?.scalep, 'SCALEP', "+")
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.t: call wn 'T', 0, 99 /*Times the text is written. */
if ?.ts\==0 then call wn 'TS', 0, 99
 ?.tsb= tb(?.tsb, 'TSB')
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.u: upper ?.u /*handle uppercasing text parts. */
 ?.u= left(?.u, 1)
if pos(?.u, " AFLUW")==0 then call er 55, ?.u '.U='
if ?.u==' ' | ?.u=='A' then ?.u=
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.ut: call wn 'T', 0, 99 /*Times the text is written. */
 ?.ut= valn(?.ut, "UT")
 
if length(?.ut) // 2 == 1 then
call er 30,?.ut 'translate-characters an-even-number-of'
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.v: upper ?.v /*video mode, Normal -or- Reverse*/
 ?.v= left(?.v, 1)
if pos(?.v, " NR")==0 then call er 55, ?.v '.V='
if ?.v==' ' | ?.v=='N' then ?.v=
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.w: if ?.q then return
if ?.wb\=='' then ?.wb= tb(?.wb, 'WB')
ww= translate(?.w, , "_")
 
if ww='dd'x then ww = "press any key to continue ..."
if ww='de'x then ww = "press the ENTER key to continue ..."
 
call '$T' ".C=yel" translate(ww,?.wb,' ')
 
if ww='dd'x then call inkey
if ww='de'x then pull external
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.x: call wn 'X', -sw(), sw()
x2= copies(?.xb, abs(?.x) )
if ?.x<0 then x1= x2
LLx= length(x1 || x2)
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.xk: do ##=1
parse var @ _ (xk) @
if _=='' & @=="" then leave
tx.##= _
if @\=='' then tx.## = tx.## || ?.k
tx.##= strip(tx.##)
LLk= max(LLk, length(tx.##))
end /*##*/
 
##= ## - 1
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
.z: _z= word( arg(1) ?.z, 1) /*snore subroutine: zzzzzz... */
if _z=0 then return
if !cms then call cp 'SLEEP' _z "SEC"
if !dos then call delay _z
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
beeps: if \!dos & !pcrexx then return /*can this OS handle sounds? */
 
do jb=1 for abs( arg(1) )
if jb\==1 then call delay .1
 
do jb_=1 for words(?.bf)
call sound word(?.bf, jb_), word( word(?.bd, jb_) .2, 1)
end /*jb_*/
end /*jb */
 
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
blocker: do jc=1 for LL /*process some blocked characters*/
chbit.jc= $block(substr(_, jc, 1) )
end /*jc*/
 
bcl= ?.block
bcs= 1
 
if bcl<0 then do
bcl= -bcl
bcs= 3 * bcl - 2
end
 
if _=='' then _=' '
tbc = ?.bc
if tbc=='' then tbc=_
tbc = left( copies(tbc, 1 + sw() % length(tbc) ), sw() )
 
do jl=bcs to 3*bcl by 3
_ = copies(?.bb, max(1, 12 * LL + ?.bs * LL - ?.bs) )
bix = 1
do jo=1 for LL
_= overlay( translate( x2b( substr(chbit.jo, jl, 3)),,
substr(tbc, jo, 1)?.bb, 10), _, bix)
bix = max(1, bix + ?.bs + 12)
end /*jo*/
 
call tellIt _
end /*jl*/
 
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
colors: arg hue,__,cc#,cc /*verify/handle synonymous colors*/
dark = left(hue,4)=='DARK'
if dark then hue = substr(hue, 5)
if hue=='BRITE' | hue=="BRIGHT" then hue = 'WHITE'
if left(hue, 5)=='BRITE' then hue = substr(hue, 6)
if left(hue, 6)=="BRIGHT" then hue = substr(hue, 7)
if abbrev('MAGENTA', hue, 3) then hue = "PINK"
if abbrev('CYAN' , hue, 3) then hue = "TURQUOIS"
if hue=='GREY' then hue = "GRAY"
 
do jj=1 to words(hues) by 2
ahue= word(hues, jj)
if abbrev(ahue, hue, 3) then do
cc= word(hues, jj + 1)
hue= ahue
leave
end
end /*jj*/
 
if cc=='' then call er 50, "color" '.'__"="hue
if dark & left(cc, 2)=='1;' then cc= "0"substr(cc, 2)
 
if !cms then do
if hue='GRAY' | hue=="BLACK" then hue= 'WHITE'
if hue="BROWN" then hue= 'YELLOW'
end
 
color.cc# = hue
colorC.cc# = esc || cc'm'
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
cpMore: call cp 'QUERY TERM', 9 /*parse CP TERMINAL for MORE,HOLD*/
__=
do jj=1 for cp.0
__= __ cp.jj
end /*jj*/
 
parse upper var __ 'MORE' more ',' 1 'HOLD' hold ','
if _>9998 & more\=='' then call cp 'TERMINAL MORE 0 0'
if _>99999998 & hold\=='' then call cp 'TERMINAL HOLD OFF'
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
dsay: if ?.q then return /*do SAY subroutine, write to scr*/
dsay_= strip( translate( arg(1), , '0'x), 'T')
say dsay_
LLd= length(dsay_) /*length of last line displayed. */
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
highLight: do _=1 for 7
hhl._ = color._\==''
hics._ = left(hh._, 1)
hice._ = right(hh._, 1)
 
if hhl._ then do
minhic= min(_, minhic); shics= shics || hics._
maxhic= max(_, maxhic); ehics= ehics || hice._
end
end /*_*/
 
ahics= shics || ehics
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
hue: hue#= max(1, hue# + arg(1) )
__= arg(2)
if __\=='' then hue.hue#= __
_=
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
inches: _= kw('RULERB') kw('SCALEB') kw('SCALEP') kw('SCALED')
/*handle RULER and SCALE stuff.*/
if arg(2) then _= $scale(?.scale _ 'Q')
else _= $scale(?.ruler 'RULE' _ "Q")
 
parse var _ _.1 '9'x _.2 '9'x _.3
 
do jk=1 for 3
_= _.jk
if _\=='' then call wit _
end /*jk*/
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
ms: #ms= #ms + 1 /*justification and indentation. */
parse arg _i
 
select
when ?.j=='' then nop
when ?.N=='N' then nop
when length(_i)>=sw()-1 then nop
when ?.j=='C' then _i= centre(_i, sw() - 1, ?.jb)
when ?.j=='L' then _i= strip(_i)
when ?.j=='R' then _i= right( strip(_i, "T"), sw() - 1)
when ?.j=='J' then _i= justify(_i, sw() - 1, ?.jb)
end /*select*/
 
mm.#ms= strip(indent || _i, 'T')
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
sayAline:
do jj=?.s to #ms for ?.o
if skp() then iterate
 
if \?.q then do
if !cms then '$CLEAR .WL='?.L _mm
if !dos then call dsay,
esc || (?.L - 1) || ";0f"colorC.0 || _mm || scr0
end
call wr _mm
 ?.L= ?.L + 1
if ?.L>sd() then ?.L= 1
end /*jj*/
 
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
sayBrite: do jj=?.s to #ms for ?.o
if skp() then iterate
call wr _mm
if ?.q then iterate
 
if !cms then '$CLEAR .C=BRITE' _mm
else if  !dos then call dsay colorC.0 || _mm || scr0
end /*jj*/
 
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
sayNline: do jj=?.s to #ms for ?.o
if skp() then iterate
 
if !dos then do
if ?.c=='' then call dsay _mm
else call dsay colorC.0 || _mm || scr0
call wr _mm
end
else call wit _mm
end /*jj*/
 
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
sayHighlight:
do jj=?.s to #ms for ?.o
if skp() then iterate
 
if !cms then do
if \?.q then '$CLEAR .C=HIGHL' _mm
iterate
end
 
lenmm= length(_mm)
__= verify(_mm, ahics, 'M')
 
if __==0 then hc= lenmm + 1
else hc= __
 
_xx= hue.1
if hc>1 then _xx= _xx || left(_mm, hc - 1)
 
 
do jl=hc to lenmm
_= substr(_mm, jl, 1)
 
do jc=minhic to maxhic
if hhl.jc then if _==hics.jc then call hue 1, colorC.jc
else if _==hice.jc then call hue - 1
end /*jc*/
 
if _=='' then _xx= _xx" "
__= verify( substr(_mm, jl + 1), ahics, 'M')
 
if __==0 then pl= lenmm - jl + 1
else pl= __
 
if pl==1 then iterate
_xx= _xx || hue.hue# || substr(_mm, jl + 1, pl - 1)
jl= jl + pl - 1
end /*jl*/
 
 
if length(_xx)>sw() then if lenmm<=sw() then _xx = esc's'_xx || esc"u"
call dsay _xx || scr0
call wr _mm
end /*jj*/
 
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
skp: if (onlyo\=='' & onlyo\==jj) | (onlys\=="" & onlys ==jj) then return 1
_mm= mm.jj
return 0
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
tb: tb= arg(1) /*test|verify Blank specification*/
if tb=='' then return left(arg(3), 1)
if length(tb)==2 then return valn("'"tb"'X", arg(2), 'X')
if length(tb)>1 then call er 30, tb "."arg(2)'=' 1
return tb
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
tellIt: ___= arg(1) /*tell it to the display terminal*/
___= x1 || ___ || x2
if boxing then ___= bx.8 || ?.eb || ___ || ?.eb || bx.4
 
call ms ___
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
valn: procedure; parse arg x,n,k /*validate number (dec,bin,hex). */
_= left(x, 1)
v= "."n'='
if (_\=='"' & _\=="'") | ((right(x,2)\==_||k) & k\=='') then return x
arg ' ' -1 t
x= substr(x, 2, length(x) - 3)
_= length(x)
 
if t=='X' then do
if \datatype(x, t) then call er 40, x v
return x2c(x)
end
 
if t=='B' then do
if \datatype(x, t) then call er 91, x v
return x2c(b2x(x))
end
 
if \datatype(x, 'W') then call er 53, x v
return d2c(x)
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
VEReb: if arg(1)==0 then return /*character for Extra Blank(s). */
eb_ = x1 || copies(?.eb,tLL)x2
 
if boxing then eb_= bx.8 || ?.eb || eb_ || ?.eb || bx.4
 
do jeb=1 for arg(1)
call ms eb_
end /*jeb*/
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
VMcolor: if \!cms then return
parse arg c1,c2
 
if c1\=='' then call cp "SCREEN VMOUT" c1
if c2\=='' then "SET VSCREEN CMS" c2
return
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
wn: procedure expose ?. /*normalize, validate N in range.*/
arg z, L, H, d, t
_= ?.z
parse upper var _ f 2
m= pos(f, 'MH')\==0
 
if m | f=='*' then do
_= (word(d H L sw(), 1)) / word(1 2, m + 1)substr(_, 2)
if \datatype(_,"N") then interpret '_=' translate(_,"%",'/')
 ?.z= _
end
 
if datatype(_, "N") then ?.z= _ / 1
if \datatype(_, left(t"W", 1) ) then call er 53, _ '.'z"="
if L\=='' then if _<L | _>H then call er 81,L H _ "value for option ."z'='
return _
 
/*──────────────────────────────────────────────────────────────────────────────────────*/
wr: parse arg wr /*write [argument 1] ───> disk. */
if ?.f=='' then return /*Nothing to write? Then skip it.*/
if highL & ahics\=='' then wr= translate(wr,, ahics) /*has highlighting?*/
 
if !cms | !tso then 'EXECIO 1 DISKW'  ?.f "(FINIS STRING" wr
else call lineout  ?.f, translate(wr, '10'x, "1a"x)
/*(above) Handle E-O-F character.*/
 
call lineout ?.f /*close the output file. */
return 0
 
/*══════════════════════════════════════════════════════════════════════════════════════*/
!all: !!=!;!=space(!);upper !;call !fid;!nt=right(!var('OS'),2)=='NT';!cls=word('CLS VMFCLEAR CLRSCREEN',1+!cms+!tso*2);if arg(1)\==1 then return 0;if wordpos(!,'? ?SAMPLES ?AUTHOR ?FLOW')==0 then return 0;!call=']$H';call '$H' !fn !;!call=;return 1
!cal: if symbol('!CALL')\=="VAR" then !call=; return !call
!env:  !env='ENVIRONMENT'; if !sys=='MSDOS' | !brexx | !r4 | !roo then !env='SYSTEM'; if !os2 then !env='OS2'!env; !ebcdic=3=='f3'x; if !crx then !env='DOS'; return
!fid: parse upper source !sys !fun !fid . 1 . . !fn !ft !fm .; call !sys; if !dos then do; _=lastpos('\',!fn); !fm=left(!fn,_); !fn=substr(!fn,_+1); parse var !fn !fn '.' !ft; end; return word(0 !fn !ft !fm,1+('0'arg(1)))
!rex: parse upper version !ver !vernum !verdate .; !brexx='BY'==!vernum; !kexx='KEXX'==!ver; !pcrexx='REXX/PERSONAL'==!ver | 'REXX/PC'==!ver; !r4='REXX-R4'==!ver; !regina='REXX-REGINA'==left(!ver,11); !roo='REXX-ROO'==!ver; call !env; return
!sys:  !cms=!sys=='CMS'; !os2=!sys=='OS2'; !tso=!sys=='TSO' | !sys=='MVS'; !vse=!sys=='VSE'; !dos=pos('DOS',!sys)\==0 | pos('WIN',!sys)\==0 | !sys=='CMD'; !crx=left(!sys,6)=='DOSCRX'; call !rex; return
!var: call !fid; if !kexx then return space(dosenv(arg(1))); return space(value(arg(1),,!env))
$block:  !call='$BLOCK'; call '$BLOCK' arg(1); !call=; return result
$mkdir:  !call='$MKDIR'; call '$MKDIR' arg(1); !call=; return result
$scale:  !call='$SCALE'; call '$SCALE' arg(1); !call=; return result
cp: "EXECIO" '0'arg(2) "CP(STEM CP. STRING" arg(1); return rc
er: parse arg _1,_2; call '$ERR' "14"p(_1) p(word(_1,2) !fid(1)) _2; if _1<0 then return _1; exit result
p: return word( arg(1), 1)
halt: call er .1
kw: parse arg kw; return kw c2x(?.kw)
lower: return translate( arg(1), @abc, @abcu)
noValue: !sigl= sigl; call er 17,!fid(2) !fid(3) !sigl condition('D') sourceline(!sigl)
proper: procedure; arg f 2; parse arg 2 r; return f || r
sd: if ?.scrdepth=='' then parse value scrsize() with  ?.scrdepth ?.linesize .; return ?.scrdepth
sw: if ?.linesize=='' then ?.linesize= linesize(); return ?.linesize
syntax:  !sigl= sigl; call er 13,!fid(2) !fid(3) !sigl !cal() condition('D') sourceline(!sigl)
wit: call dsay arg(1); call wr arg(1); return