LINESIZE.REX: Difference between revisions

signal on novaluenoValue

if \!dos then return 24 80 /*not DOS? Return default. */

@abc= 'abcdefghijklmnopqrstuvwxyz'

@erase = 'ERASE' /*point to dos ERASE the DOS ERASE cmd.*/

@find = 'FIND' /*point to the" " " " dos FIND cmd " */

@MODE = 'MODE' /*point to the" " " " dos MODE cmd " */

tfid= /*name of a temporary FIDfileID. */

/*Note: /i = ignore case. */

@find_col = '/i "column"' /*find a line with COLUMN. */

findLines= 1

sw= 0

if _\=='' | __\=='' then call er 59

ops= space(ops)

parse var ops _1 2 1 _ . 1 _o ops

when _1=='.' & pos("=",_)\==0 then tops= tops _o

abbn('COLs' ) then findLines= no()

sd= word( !var('LINES'), 1) /*pick off the first word. */

if \isInt(sd) then sd= 0 /*ifNot nota whole #,? Then thenuse 0. */

sd= sd / 1 /*Has a decimal point ? remove.Remove*/

do while sw==0 @mode 'CON: |' @find @find_col '>' tfid /*readissue fileMODE whileCON sw|sw =0.filter>fid*/

@erase tfid call linein tfid,1,0 /*erasepoint theto temp.record file1. */

if sw==0 then sw=80 @erase tfid /*justerase inthe casetemp. MODE failedfile. */

return /*usereturn positive values.the screen width. */

!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=1 3=='f0f3'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) )

$fact!: procedure; parse arg x _ .; l= length(x); n= l - length( strip(x, 'T', "!") ); if n<=-n | _\=='' | arg()\==1 then return x; z=left(x, l - n); if z<0 | \isInt(z) then return x; return $fact(z, n)

$fact: procedure; parse arg x _ .; arg ,n ! .; n= p(n 1); if \isInt(n) then n= 0; if x<-n | \isInt(x) | n<1 | _ || !\=='' | arg()>2 then return x || copies("!", max(1, n) ); != 1; s= x//n; if s==0 then s=n; do j=s to x by n; !=!*j; end; return !

$sfxa: parse arg ,s,m; arg u,c; if pos( left(s, 2), u)\==0 then do j=length(s) to compare(s, c)-1 by -1; if right(u, j)\==left(c, j) then iterate; _= left(u, length(u) - j); if isNum(_) then return m * _; leave; end; return arg(1)

$sfxf: parse arg y; if right(y, 1)=='!' then y= $fact!(y); if \isNum(y) then y= $sfxz(); if isNum(y) then return y; return $sfxm(y)

$sfxm: parse arg z; arg w; b= 1000; if right(w, 1)=='I' then do; z= shorten(z); w=z; upper w; b=1024; end; p= pos(right(w,1),'KMGTPEZYXWVU'); if p==0 then return arg(1); n=shorten(z); r=num(n,f,1); if isNum(r) then return r*b**p; return arg(1)

$sfxz: return $sfxa( $sfxa( $sfxa( $sfxa( $sfxa( $sfxa(y, 'PAIRs', 2), 'DOZens', 12), 'SCore', 20), 'GREATGRoss', 1728), 'GRoss', 144), 'GOOGOLs', 1e100)

abb: arg abbu; parse arg abb; return abbrev(abbu, _, abbl(abb) )

abbl: return verify( arg(1)'a', @abc, 'M') - 1

abbn: parse arg abbn; return abb(abbn) | abb('NO'abbn)

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

err: call er '-'arg(1),arg(2); return ''

erx: call er '-'arg(1),arg(2); exit ''

getdtfid: tfid= p(!var("TMP") !var('TEMP') homedrive()"\"); if substr(tfid, 2, 1)==':' & substr(tfid, 3, 1)\=="\" then tfid= insert('\', t, 2); return strip(tfid, 'T', "\")'\'arg(1)'.'arg(2)

getTFID: if symbol('TFID')=='LIT' then tfid=; if tfid\=='' then return tfid; gfn=word(arg(1) !fn,1); gft=word(arg(2) 'ANS',1); tfid='TEMP';if !tso then tfid=gfn'.'gft;if !cms then tfid=gfn','gft",A4";if !dos then tfid=getdTFID(gfn,gft); return tfid

halt: call er .1

homedrive: if symbol('HOMEDRIVE')\=="VAR" then homedrive= p(!var('HOMEDRIVE') 'C:'); return homedrive

int: int= num(arg(1), arg(2)); if \isInt(int) then call er 92,arg(1) arg(2); return int/1

isInt: return datatype( arg(1), 'W')

isNum: return datatype( arg(1), 'N')

na: if arg(1)\=='' then call er 01,arg(2); parse var ops na ops; if na=='' then call er 35,_o;return na

nai: return int(na(), _o)

nan: return num(na(), _o)

no: if arg(1)\=='' then call er 01,arg(2); return left(_,2)\=='NO'

novaluenoValue: !sigl=sigl; call er 17,!fid(2) !fid(3) !sigl condition('D') sourceline(!sigl)

num: procedure; parse arg x .,f,q; if x=='' then return x; if isNum(x) then return x/1; x=space(translate(x,,','),0); if \isNum(x) then x=$sfxf(x); if isNum(x) then return x/1; if q==1 then return x;if q=='' then call er 53,x f; call erx 53,x f

p: return word( arg(1), 1)

s: if arg(1)==1 then return arg(3); return word( arg(2) 's', 1)

shorten: procedure; parse arg a,n; return left(a, max(0, length(a) - p(n 1) ) )

syntax: !sigl= sigl; call er 13,!fid(2) !fid(3) !sigl !cal() condition('D') sourceline(!sigl)</lang>