judge_name.aii

	string asis

	;
	; class 1 only.
	;
	; "Read-only FSTs return an invalidFSTop error ($65)."
	;
	;

	include 'gsos.equ'
	include 'minix.equ'
	include 'records.equ'

	include 'fst.equ'

	include 'fst.macros'

	include 'M16.Debug'


	entry check_name
	entry do_name_flags
	entry do_max_len
	entry do_syntax

	import do_ignore

my_dp	record dp.__end

name_type	ds.w 1
name		ds.l 1
name_flags	ds.w 1
name_length	ds.w 1

src		ds.l 1
dest		ds.l 1

	IF *>=$d4 THEN
	AERROR 'dp -- too large.'
	ENDIF
	endr

judge_name	procname	export


	with fst_parms, dp, my_dp

	; class 1 only.

check_class

	lda call_class
	bne @class_ok

	lda #bad_system_call
	sec
	rtl
@class_ok

	stz name_type
	stz name
	stz name+2
	stz name_flags

	ldy #JudgeNameRecGS.nameType
	lda [param_blk_ptr],y
	sta name_type
	cmp #3+1
	bcc @nt_ok
	lda #parm_range_err
	sec
	rtl

@nt_ok

	; out-of-order handling of nameFlags.

	lda [param_blk_ptr] ; pCount
	cmp #5
	blt @skipname

	jsr check_name

@skipname


dispatcher

	lda [param_blk_ptr] ; pcount
	dec a
	asl a ; x 2
	asl a ; x 4
	tax
	dispatch judge_name_dcb_1


	lda tool_error
	cmp #1
	rtl


judge_name_dcb_1
	with JudgeNameRecGS
	;dc.w pCount, do_ignore
	dc.w fileSysID, do_ignore
	dc.w nameType, do_ignore
	dc.w syntax, do_syntax
	dc.w maxLen, do_max_len
	dc.w name, do_ignore
	dc.w nameFlags, do_name_flags
	endwith



	endp

check_name	procname

	with fst_parms, dp, my_dp


get_name
	ldy #JudgeNameRecGS.name
	lda [param_blk_ptr],y
	sta name
	iny
	iny
	lda [param_blk_ptr],y
	and #$00ff
	sta name+2
	ora name
	bne @ok
	rts
@ok


	; check the output buffer size. 
	; although maximum size is 30, we only require a max size of 1
	; (if name was blank)

buffsize

	lda [name]
	cmp #3
	bcc @bts
	cmp #5+1
	bcs @ok
	lda #1
	ldy #2
	sta [name],y
@bts
	lda #buff_too_small
	sta tool_error
	rts
@ok


	; get the length...
	ldy #2
	lda [name],y
	sta name_length

	; check for and remove any invalid chars.
cleanup
	ldx name_length
	bne @ok

@null
	; no name -> 'A'
	ldy #2
	lda #1
	sta [name],y
	iny
	iny
	short m
	lda #'A'
	sta [name],y
	long m

	lda #$2000
	tsb name_flags
	rts

@ok
	; x = name length.
	ldy #4
	short m
@loop
	lda [name],y
	beq @bad
	cmp #':'
	beq @bad
	cmp #'/'
	beq @bad
	bra @next
@bad
	lda #'.'
	sta [name],y
	lda #$80
	tsb name_flags+1
@next
	iny
	dex
	bne @loop
@done
	long m

length


	lda name_length
	cmp #30+1
	bcs toolong
	rts ; ok!


toolong
	; $4000 - name is too long.
	lda #$4000
	tsb name_flags

	ldy #2
	lda #30
	sta [name],y 

	; if < 40 chars, first 27 + '...'
	lda name_length
	cmp #40+1
	bcs longlong
	short m
	lda #'.'
	ldy #4+28-1
	sta [name],y
	iny
	sta [name],y
	iny
	sta [name],y
	long m
	rts

longlong
	; first 13 chars, ..., last 14 chars


	clc
	lda #4+17 ; gsos buffer overhead
	adc name
	sta dest
	lda #0
	adc name+2
	sta dest+2


	lda name_length
	sec
	sbc #14-4
	clc
	adc name
	sta src
	lda #0
	adc name+2
	sta src+2


	ldy #14-2
@loop
	lda [src],y
	sta [dest],y
	dey
	dey
	bpl @loop

	ldy #4+14
	short m
	lda #'.'
	sta [name],y
	iny
	sta [name],y
	iny
	sta [name],y
	iny
	long m

	rts

	endp


do_name_flags	procname
	with fst_parms, my_dp

	lda name_flags
	sta [param_blk_ptr],y
	rts
	endp

do_max_len	proc

	with fst_parms

	lda #30
	sta [param_blk_ptr],y
	rts

	endp

do_syntax	procname
	with fst_parms
	
	lda #syntax_str
	sta [param_blk_ptr],y
	iny
	iny
	lda #^syntax_str
	sta [param_blk_ptr],y
	rts

syntax_str
	dc.b ss_end-*
	dc.b 'Minix names may contain any character except a colon (:), '
	dc.b 'forward slash (/) and null. File names may be up to 30 '
	dc.b 'characters long.'
ss_end	equ *

	endp


	end