gno/bin/gsh/M/shellutil.mac

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MACRO
&lab subroutine &parms,&work
&lab anop
aif c:&work,.a
lclc &work
&work setc 0
.a
gbla &totallen
gbla &worklen
&worklen seta &work
&totallen seta 0
aif c:&parms=0,.e
lclc &len
lclc &p
lcla &i
&i seta c:&parms
.b
&p setc &parms(&i)
&len amid &p,2,1
aif "&len"=":",.c
&len amid &p,1,2
&p amid &p,4,l:&p-3
ago .d
.c
&len amid &p,1,1
&p amid &p,3,l:&p-2
.d
&p equ &totallen+3+&work
&totallen seta &totallen+&len
&i seta &i-1
aif &i,^b
.e
tsc
sec
sbc #&work
tcs
inc a
phd
tcd
phb
phk
plb
mend
MACRO
&lab return &r
&lab anop
lclc &len
aif c:&r,.a
lclc &r
&r setc 0
&len setc 0
ago .h
.a
&len amid &r,2,1
aif "&len"=":",.b
&len amid &r,1,2
&r amid &r,4,l:&r-3
ago .c
.b
&len amid &r,1,1
&r amid &r,3,l:&r-2
.c
aif &len<>2,.d
ldy &r
ago .h
.d
aif &len<>4,.e
ldx &r+2
ldy &r
ago .h
.e
aif &len<>10,.g
ldy #&r
ldx #^&r
ago .h
.g
mnote 'Not a valid return length',16
mexit
.h
aif &totallen=0,.i
lda &worklen+1
sta &worklen+&totallen+1
lda &worklen
sta &worklen+&totallen
.i
plb
pld
tsc
clc
adc #&worklen+&totallen
tcs
aif &len=0,.j
tya
.j
rtl
mend
MACRO
&lab long &stat
&lab anop
lcla &t
lcla &len
lclc &ch
&t seta 0
&len seta l:&stat
.a
aif &len=0,.b
&ch amid &stat,&len,1
aif ("&ch"="x").or.("&ch"="y").or.("&ch"="i"),.i
aif ("&ch"="a").or.("&ch"="m"),.m
.c
&len seta &len-1
ago ^a
.i
longi on
&t seta &t+16
ago ^c
.m
longa on
&t seta &t+32
ago ^c
.b
aif &t=0,.d
rep #&t
.d
mend
MACRO
&lab short &stat
&lab anop
lcla &t
lcla &len
lclc &ch
&t seta 0
&len seta l:&stat
.a
aif &len=0,.b
&ch amid &stat,&len,1
aif ("&ch"="x").or.("&ch"="y").or.("&ch"="i"),.i
aif ("&ch"="a").or.("&ch"="m"),.m
.c
&len seta &len-1
ago ^a
.i
longi off
&t seta &t+16
ago ^c
.m
longa off
&t seta &t+32
ago ^c
.b
aif &t=0,.d
sep #&t
.d
mend
MACRO
&lab jeq &loc
&lab bne *+5
jmp &loc
mend
MACRO
&lab READ_VARIABLE &a1
&lab p16 $10B,&a1
mend
MACRO
&lab p16 &a1,&a2
&lab jsl $E100A8
dc i2'&a1'
dc i4'&a2'
mend
MACRO
&lab unlock &a1
&lab stz &a1
MEND
MACRO
&lab key
&lab dc i2'0'
MEND
MACRO
&lab lock &a1
&lab lda #1
tsb &a1
beq *+6
cop $7F
bra *-7
MEND