mirror of
https://github.com/bobbimanners/emailler.git
synced 2024-10-11 01:23:42 +00:00
Reduced size of typical binary.
The pretty small check_for_abort_key is used by DHCP and DNS which means it is used by about every IP65 program. The pretty large get_filtered_input on the other hand is very seldom used so it makes sense to put the latter in a separate module to keep it from ending up in binaries unused.
This commit is contained in:
parent
2e765dbc64
commit
ea8be71805
@ -24,6 +24,7 @@ C64OBJS=\
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c64timer.o \
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c64kernal.o \
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c64input.o \
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c64filteredinput.o \
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cbmcharconv.o
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A2OBJS=\
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@ -32,6 +33,7 @@ A2OBJS=\
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a2timer.o \
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a2kernal.o \
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a2input.o \
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a2filteredinput.o \
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a2charconv.o
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VIC20OBJS=\
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@ -40,6 +42,7 @@ VIC20OBJS=\
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vic20timer.o \
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vic20kernal.o \
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vic20input.o \
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vic20filteredinput.o \
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cbmcharconv.o
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c64rrnet.lib: rr-net.o cs8900a.o $(C64OBJS)
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167
drivers/a2filteredinput.s
Normal file
167
drivers/a2filteredinput.s
Normal file
@ -0,0 +1,167 @@
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.export get_filtered_input
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.export filter_text
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.export filter_ip
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.export filter_dns
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.export filter_url
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.export filter_number
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.import get_key_ip65
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.import print_a
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.import print_hex
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.include "zeropage.inc"
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.include "../inc/common.i"
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allowed_ptr = ptr1
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.code
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; cribbed from http://codebase64.org/doku.php?id=base:robust_string_input
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; ======================================================================
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; Input a string and store it in GOTINPUT, terminated with a null byte.
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; AX is a pointer to the allowed list of characters, null-terminated.
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; set AX to $0000 for no filter on input
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; max # of chars in y returns num of chars entered in y.
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; ======================================================================
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; Main entry
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get_filtered_input:
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sty MAXCHARS
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stax temp_allowed
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; Zero characters received.
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lda #$00
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sta INPUT_Y
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; Wait for a character.
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@input_get:
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jsr get_key_ip65
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; convert to standard ASCII by turning off high bit
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and #$7f
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sta LASTCHAR
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cmp #$08 ; Delete
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beq @delete
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cmp #$0d ; Return
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beq @input_done
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; End reached?
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lda INPUT_Y
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cmp MAXCHARS
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beq @input_get
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; Check the allowed list of characters.
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ldax temp_allowed
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stax allowed_ptr ; Since we are reusing this zero page, it may not stil be the same value since last time!
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ldy #$00
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lda allowed_ptr+1 ; Was the input filter point nul?
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beq @input_ok
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@check_allowed:
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lda (allowed_ptr),y ; Overwritten
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beq @input_get ; Reached end of list (0)
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cmp LASTCHAR
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beq @input_ok ; Match found
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; Not end or match, keep checking
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iny
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jmp @check_allowed
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@input_ok:
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lda LASTCHAR ; Get the char back
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ldy INPUT_Y
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sta GOTINPUT,y ; Add it to string
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inc INPUT_Y ; Next character
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jsr print_a
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; Not yet.
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jmp @input_get
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@input_done:
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ldy INPUT_Y
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beq @no_input
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lda #$00
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sta GOTINPUT,y ; Zero-terminate
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clc
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ldax #GOTINPUT
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rts
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@no_input:
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sec
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rts
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; Delete last character.
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@delete:
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; First, check if we're at the beginning. If so, just exit.
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lda INPUT_Y
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bne @delete_ok
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jmp @input_get
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; At least one character entered.
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@delete_ok:
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; Move pointer back.
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dec INPUT_Y
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; Store a zero over top of last character, just in case no other characters are entered.
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ldy INPUT_Y
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lda #$00
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sta GOTINPUT,y
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; Print the backspace char
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lda #$88
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jsr print_a
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; Print the a space
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lda #$a0
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jsr print_a
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; Print the backspace char
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lda #$88
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jsr print_a
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; Wait for next char
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jmp @input_get
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; =================================================
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; Some example filters
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; =================================================
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filter_text:
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.byte ",!#'()* "
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filter_url:
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.byte ":/%&?+$"
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filter_dns:
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.byte "-ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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filter_ip:
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.byte "."
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filter_number:
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.byte "1234567890",0
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.bss
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temp_allowed: .res 2
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MAXCHARS: .res 1
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LASTCHAR: .res 1
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INPUT_Y: .res 1
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GOTINPUT: .res 40
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; -- LICENSE FOR a2filteredinput.s --
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; The contents of this file are subject to the Mozilla Public License
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; Version 1.1 (the "License"); you may not use this file except in
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; compliance with the License. You may obtain a copy of the License at
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; http://www.mozilla.org/MPL/
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;
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; Software distributed under the License is distributed on an "AS IS"
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; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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; License for the specific language governing rights and limitations
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; under the License.
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;
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; The Original Code is ip65.
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;
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; The Initial Developer of the Original Code is Jonno Downes,
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; jonno@jamtronix.com.
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; Portions created by the Initial Developer are Copyright (C) 2009
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; Jonno Downes. All Rights Reserved.
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; -- LICENSE END --
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@ -1,21 +1,9 @@
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.export get_key
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.export check_for_abort_key
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.export get_filtered_input
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.export filter_text
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.export filter_ip
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.export filter_dns
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.export filter_number
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.export get_key_ip65
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.export get_key_if_available
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.import ip65_process
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.import print_a
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.import print_hex
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.include "zeropage.inc"
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.include "../inc/common.i"
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allowed_ptr = ptr1
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.code
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@ -24,16 +12,12 @@ allowed_ptr = ptr1
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; inputs: none
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; outputs: A contains ASCII code of key pressed
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get_key:
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; lda #$a0
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; lda #$20
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; ldy #$24 ; KEYIN assumes Y is loaded with column
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; jmp $fd1b
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jmp $fd0c
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; inputs: none
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; outputs: A contains ASCII value of key just pressed (0 if no key pressed)
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get_key_if_available:
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bit $c000 ; Key down?
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bit $c000 ; key down?
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bmi get_key
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lda #0
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rts
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@ -43,7 +27,7 @@ get_key_if_available:
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; outputs: sec if escape pressed, clear otherwise
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check_for_abort_key:
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lda $c000 ; current key pressed
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cmp #$9B
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cmp #$9b
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bne :+
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bit $c010 ; clear the keyboard strobe
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sec
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@ -54,134 +38,10 @@ check_for_abort_key:
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; process inbound ip packets while waiting for a keypress
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get_key_ip65:
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jsr ip65_process
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bit $c000 ; Key down?
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bit $c000 ; key down?
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bpl get_key_ip65
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jmp get_key
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; cribbed from http://codebase64.org/doku.php?id=base:robust_string_input
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; ======================================================================
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; Input a string and store it in GOTINPUT, terminated with a null byte.
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; AX is a pointer to the allowed list of characters, null-terminated.
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; set AX to $0000 for no filter on input
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; max # of chars in y returns num of chars entered in y.
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; ======================================================================
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; Main entry
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get_filtered_input:
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sty MAXCHARS
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stax temp_allowed
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; Zero characters received.
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lda #$00
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sta INPUT_Y
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; Wait for a character.
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@input_get:
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jsr get_key_ip65
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; convert to standard ASCII by turning off high bit
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and #$7f
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sta LASTCHAR
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cmp #$08 ; Delete
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beq @delete
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cmp #$0d ; Return
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beq @input_done
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; End reached?
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lda INPUT_Y
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cmp MAXCHARS
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beq @input_get
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; Check the allowed list of characters.
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ldax temp_allowed
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stax allowed_ptr ; Since we are reusing this zero page, it may not stil be the same value since last time!
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ldy #$00
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lda allowed_ptr+1 ; Was the input filter point nul?
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beq @input_ok
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@check_allowed:
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lda (allowed_ptr),y ; Overwritten
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beq @input_get ; Reached end of list (0)
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cmp LASTCHAR
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beq @input_ok ; Match found
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; Not end or match, keep checking
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iny
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jmp @check_allowed
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@input_ok:
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lda LASTCHAR ; Get the char back
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ldy INPUT_Y
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sta GOTINPUT,y ; Add it to string
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inc INPUT_Y ; Next character
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jsr print_a
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; Not yet.
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jmp @input_get
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@input_done:
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ldy INPUT_Y
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beq @no_input
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lda #$00
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sta GOTINPUT,y ; Zero-terminate
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clc
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ldax #GOTINPUT
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rts
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@no_input:
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sec
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rts
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; Delete last character.
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@delete:
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; First, check if we're at the beginning. If so, just exit.
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lda INPUT_Y
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bne @delete_ok
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jmp @input_get
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; At least one character entered.
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@delete_ok:
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; Move pointer back.
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dec INPUT_Y
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; Store a zero over top of last character, just in case no other characters are entered.
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ldy INPUT_Y
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lda #$00
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sta GOTINPUT,y
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; Print the backspace char
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lda #$88
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jsr print_a
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; Print the a space
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lda #$a0
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jsr print_a
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; Print the backspace char
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lda #$88
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jsr print_a
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; Wait for next char
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jmp @input_get
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; =================================================
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; Some example filters
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; =================================================
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filter_text:
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.byte ",+!#$%&'()* "
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filter_dns:
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.byte "-ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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filter_ip:
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.byte "."
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filter_number:
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.byte "1234567890",0
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.bss
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temp_allowed: .res 2
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MAXCHARS: .res 1
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LASTCHAR: .res 1
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INPUT_Y: .res 1
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GOTINPUT: .res 40
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; -- LICENSE FOR a2input.s --
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156
drivers/c64filteredinput.s
Normal file
156
drivers/c64filteredinput.s
Normal file
@ -0,0 +1,156 @@
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.export get_filtered_input
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.export filter_text
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.export filter_ip
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.export filter_dns
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.export filter_url
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.export filter_number
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.import get_key
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.include "zeropage.inc"
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.include "../inc/common.i"
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allowed_ptr = ptr1
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.code
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; cribbed from http://codebase64.org/doku.php?id=base:robust_string_input
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; ======================================================================
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; Input a string and store it in GOTINPUT, terminated with a null byte.
|
||||
; AX is a pointer to the allowed list of characters, null-terminated.
|
||||
; set AX to $0000 for no filter on input
|
||||
; max # of chars in y returns num of chars entered in y.
|
||||
; ======================================================================
|
||||
; Main entry
|
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get_filtered_input:
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sty MAXCHARS
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stax temp_allowed
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|
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; Zero characters received.
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lda #$00
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sta INPUT_Y
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; Wait for a character.
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@input_get:
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jsr get_key
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sta LASTCHAR
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cmp #$14 ; Delete
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beq @delete
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cmp #$0d ; Return
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beq @input_done
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; End reached?
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lda INPUT_Y
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cmp MAXCHARS
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beq @input_get
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|
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; Check the allowed list of characters.
|
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ldax temp_allowed
|
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stax allowed_ptr ; Since we are reusing this zero page, it may not stil be the same value since last time!
|
||||
|
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ldy #$00
|
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lda allowed_ptr+1 ; Was the input filter point nul?
|
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beq @input_ok
|
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@check_allowed:
|
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lda (allowed_ptr),y ; Overwritten
|
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beq @input_get ; Reached end of list (0)
|
||||
|
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cmp LASTCHAR
|
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beq @input_ok ; Match found
|
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|
||||
; Not end or match, keep checking
|
||||
iny
|
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jmp @check_allowed
|
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|
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@input_ok:
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lda LASTCHAR ; Get the char back
|
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ldy INPUT_Y
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sta GOTINPUT,y ; Add it to string
|
||||
jsr $ffd2 ; Print it
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|
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inc INPUT_Y ; Next character
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|
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; Not yet.
|
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jmp @input_get
|
||||
|
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@input_done:
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ldy INPUT_Y
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beq @no_input
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lda #$00
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sta GOTINPUT,y ; Zero-terminate
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clc
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ldax #GOTINPUT
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rts
|
||||
@no_input:
|
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sec
|
||||
rts
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||||
; Delete last character.
|
||||
@delete:
|
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; First, check if we're at the beginning. If so, just exit.
|
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lda INPUT_Y
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bne @delete_ok
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jmp @input_get
|
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|
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; At least one character entered.
|
||||
@delete_ok:
|
||||
; Move pointer back.
|
||||
dec INPUT_Y
|
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|
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; Store a zero over top of last character, just in case no other characters are entered.
|
||||
ldy INPUT_Y
|
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lda #$00
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sta GOTINPUT,y
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|
||||
; Print the delete char
|
||||
lda #$14
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jsr $ffd2
|
||||
|
||||
; Wait for next char
|
||||
jmp @input_get
|
||||
|
||||
; =================================================
|
||||
; Some example filters
|
||||
; =================================================
|
||||
filter_text:
|
||||
.byte ",!#'()* "
|
||||
filter_url:
|
||||
.byte ":/%&?+$"
|
||||
filter_dns:
|
||||
.byte "-ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||||
filter_ip:
|
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.byte "."
|
||||
filter_number:
|
||||
.byte "1234567890",0
|
||||
|
||||
|
||||
.bss
|
||||
|
||||
temp_allowed: .res 2
|
||||
MAXCHARS: .res 1
|
||||
LASTCHAR: .res 1
|
||||
INPUT_Y: .res 1
|
||||
GOTINPUT: .res 40
|
||||
|
||||
|
||||
|
||||
; -- LICENSE FOR c64filteredinput.s --
|
||||
; The contents of this file are subject to the Mozilla Public License
|
||||
; Version 1.1 (the "License"); you may not use this file except in
|
||||
; compliance with the License. You may obtain a copy of the License at
|
||||
; http://www.mozilla.org/MPL/
|
||||
;
|
||||
; Software distributed under the License is distributed on an "AS IS"
|
||||
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
||||
; License for the specific language governing rights and limitations
|
||||
; under the License.
|
||||
;
|
||||
; The Original Code is ip65.
|
||||
;
|
||||
; The Initial Developer of the Original Code is Jonno Downes,
|
||||
; jonno@jamtronix.com.
|
||||
; Portions created by the Initial Developer are Copyright (C) 2009
|
||||
; Jonno Downes. All Rights Reserved.
|
||||
; -- LICENSE END --
|
@ -1,21 +1,10 @@
|
||||
.export get_key
|
||||
.export get_filtered_input
|
||||
.export filter_text
|
||||
.export filter_ip
|
||||
.export filter_dns
|
||||
.export filter_url
|
||||
.export filter_number
|
||||
.export check_for_abort_key
|
||||
.export get_key_if_available
|
||||
.export get_key_ip65
|
||||
|
||||
.import ip65_process
|
||||
|
||||
.include "zeropage.inc"
|
||||
.include "../inc/common.i"
|
||||
|
||||
allowed_ptr = ptr1
|
||||
|
||||
|
||||
.code
|
||||
|
||||
@ -58,125 +47,6 @@ check_for_abort_key:
|
||||
clc
|
||||
rts
|
||||
|
||||
; cribbed from http://codebase64.org/doku.php?id=base:robust_string_input
|
||||
; ======================================================================
|
||||
; Input a string and store it in GOTINPUT, terminated with a null byte.
|
||||
; AX is a pointer to the allowed list of characters, null-terminated.
|
||||
; set AX to $0000 for no filter on input
|
||||
; max # of chars in y returns num of chars entered in y.
|
||||
; ======================================================================
|
||||
; Main entry
|
||||
get_filtered_input:
|
||||
sty MAXCHARS
|
||||
stax temp_allowed
|
||||
|
||||
; Zero characters received.
|
||||
lda #$00
|
||||
sta INPUT_Y
|
||||
|
||||
; Wait for a character.
|
||||
@input_get:
|
||||
jsr get_key
|
||||
sta LASTCHAR
|
||||
|
||||
cmp #$14 ; Delete
|
||||
beq @delete
|
||||
|
||||
cmp #$0d ; Return
|
||||
beq @input_done
|
||||
|
||||
; End reached?
|
||||
lda INPUT_Y
|
||||
cmp MAXCHARS
|
||||
beq @input_get
|
||||
|
||||
; Check the allowed list of characters.
|
||||
ldax temp_allowed
|
||||
stax allowed_ptr ; Since we are reusing this zero page, it may not stil be the same value since last time!
|
||||
|
||||
ldy #$00
|
||||
lda allowed_ptr+1 ; Was the input filter point nul?
|
||||
beq @input_ok
|
||||
@check_allowed:
|
||||
lda (allowed_ptr),y ; Overwritten
|
||||
beq @input_get ; Reached end of list (0)
|
||||
|
||||
cmp LASTCHAR
|
||||
beq @input_ok ; Match found
|
||||
|
||||
; Not end or match, keep checking
|
||||
iny
|
||||
jmp @check_allowed
|
||||
|
||||
@input_ok:
|
||||
lda LASTCHAR ; Get the char back
|
||||
ldy INPUT_Y
|
||||
sta GOTINPUT,y ; Add it to string
|
||||
jsr $ffd2 ; Print it
|
||||
|
||||
inc INPUT_Y ; Next character
|
||||
|
||||
; Not yet.
|
||||
jmp @input_get
|
||||
|
||||
@input_done:
|
||||
ldy INPUT_Y
|
||||
beq @no_input
|
||||
lda #$00
|
||||
sta GOTINPUT,y ; Zero-terminate
|
||||
clc
|
||||
ldax #GOTINPUT
|
||||
rts
|
||||
@no_input:
|
||||
sec
|
||||
rts
|
||||
; Delete last character.
|
||||
@delete:
|
||||
; First, check if we're at the beginning. If so, just exit.
|
||||
lda INPUT_Y
|
||||
bne @delete_ok
|
||||
jmp @input_get
|
||||
|
||||
; At least one character entered.
|
||||
@delete_ok:
|
||||
; Move pointer back.
|
||||
dec INPUT_Y
|
||||
|
||||
; Store a zero over top of last character, just in case no other characters are entered.
|
||||
ldy INPUT_Y
|
||||
lda #$00
|
||||
sta GOTINPUT,y
|
||||
|
||||
; Print the delete char
|
||||
lda #$14
|
||||
jsr $ffd2
|
||||
|
||||
; Wait for next char
|
||||
jmp @input_get
|
||||
|
||||
; =================================================
|
||||
; Some example filters
|
||||
; =================================================
|
||||
filter_text:
|
||||
.byte ",!#'()* "
|
||||
filter_url:
|
||||
.byte ":/%&?+$"
|
||||
filter_dns:
|
||||
.byte "-ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||||
filter_ip:
|
||||
.byte "."
|
||||
filter_number:
|
||||
.byte "1234567890",0
|
||||
|
||||
|
||||
.bss
|
||||
|
||||
temp_allowed: .res 2
|
||||
MAXCHARS: .res 1
|
||||
LASTCHAR: .res 1
|
||||
INPUT_Y: .res 1
|
||||
GOTINPUT: .res 40
|
||||
|
||||
|
||||
|
||||
; -- LICENSE FOR c64input.s --
|
||||
|
156
drivers/vic20filteredinput.s
Normal file
156
drivers/vic20filteredinput.s
Normal file
@ -0,0 +1,156 @@
|
||||
.export get_filtered_input
|
||||
.export filter_text
|
||||
.export filter_ip
|
||||
.export filter_dns
|
||||
.export filter_url
|
||||
.export filter_number
|
||||
|
||||
.import get_key
|
||||
|
||||
.include "zeropage.inc"
|
||||
.include "../inc/common.i"
|
||||
|
||||
allowed_ptr = ptr1
|
||||
|
||||
|
||||
.code
|
||||
|
||||
; cribbed from http://codebase64.org/doku.php?id=base:robust_string_input
|
||||
; ======================================================================
|
||||
; Input a string and store it in GOTINPUT, terminated with a null byte.
|
||||
; AX is a pointer to the allowed list of characters, null-terminated.
|
||||
; set AX to $0000 for no filter on input
|
||||
; max # of chars in y returns num of chars entered in y.
|
||||
; ======================================================================
|
||||
; Main entry
|
||||
get_filtered_input:
|
||||
sty MAXCHARS
|
||||
stax temp_allowed
|
||||
|
||||
; Zero characters received.
|
||||
lda #$00
|
||||
sta INPUT_Y
|
||||
|
||||
; Wait for a character.
|
||||
@input_get:
|
||||
jsr get_key
|
||||
sta LASTCHAR
|
||||
|
||||
cmp #$14 ; Delete
|
||||
beq @delete
|
||||
|
||||
cmp #$0d ; Return
|
||||
beq @input_done
|
||||
|
||||
; End reached?
|
||||
lda INPUT_Y
|
||||
cmp MAXCHARS
|
||||
beq @input_get
|
||||
|
||||
; Check the allowed list of characters.
|
||||
ldax temp_allowed
|
||||
stax allowed_ptr ; Since we are reusing this zero page, it may not stil be the same value since last time!
|
||||
|
||||
ldy #$00
|
||||
lda allowed_ptr+1 ; Was the input filter point nul?
|
||||
beq @input_ok
|
||||
@check_allowed:
|
||||
lda (allowed_ptr),y ; Overwritten
|
||||
beq @input_get ; Reached end of list (0)
|
||||
|
||||
cmp LASTCHAR
|
||||
beq @input_ok ; Match found
|
||||
|
||||
; Not end or match, keep checking
|
||||
iny
|
||||
jmp @check_allowed
|
||||
|
||||
@input_ok:
|
||||
lda LASTCHAR ; Get the char back
|
||||
ldy INPUT_Y
|
||||
sta GOTINPUT,y ; Add it to string
|
||||
jsr $ffd2 ; Print it
|
||||
|
||||
inc INPUT_Y ; Next character
|
||||
|
||||
; Not yet.
|
||||
jmp @input_get
|
||||
|
||||
@input_done:
|
||||
ldy INPUT_Y
|
||||
beq @no_input
|
||||
lda #$00
|
||||
sta GOTINPUT,y ; Zero-terminate
|
||||
clc
|
||||
ldax #GOTINPUT
|
||||
rts
|
||||
@no_input:
|
||||
sec
|
||||
rts
|
||||
; Delete last character.
|
||||
@delete:
|
||||
; First, check if we're at the beginning. If so, just exit.
|
||||
lda INPUT_Y
|
||||
bne @delete_ok
|
||||
jmp @input_get
|
||||
|
||||
; At least one character entered.
|
||||
@delete_ok:
|
||||
; Move pointer back.
|
||||
dec INPUT_Y
|
||||
|
||||
; Store a zero over top of last character, just in case no other characters are entered.
|
||||
ldy INPUT_Y
|
||||
lda #$00
|
||||
sta GOTINPUT,y
|
||||
|
||||
; Print the delete char
|
||||
lda #$14
|
||||
jsr $ffd2
|
||||
|
||||
; Wait for next char
|
||||
jmp @input_get
|
||||
|
||||
; =================================================
|
||||
; Some example filters
|
||||
; =================================================
|
||||
filter_text:
|
||||
.byte ",!#'()* "
|
||||
filter_url:
|
||||
.byte ":/%&?+$"
|
||||
filter_dns:
|
||||
.byte "-ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||||
filter_ip:
|
||||
.byte "."
|
||||
filter_number:
|
||||
.byte "1234567890",0
|
||||
|
||||
|
||||
.bss
|
||||
|
||||
temp_allowed: .res 2
|
||||
MAXCHARS: .res 1
|
||||
LASTCHAR: .res 1
|
||||
INPUT_Y: .res 1
|
||||
GOTINPUT: .res 40
|
||||
|
||||
|
||||
|
||||
; -- LICENSE FOR vic20filteredinput.s --
|
||||
; The contents of this file are subject to the Mozilla Public License
|
||||
; Version 1.1 (the "License"); you may not use this file except in
|
||||
; compliance with the License. You may obtain a copy of the License at
|
||||
; http://www.mozilla.org/MPL/
|
||||
;
|
||||
; Software distributed under the License is distributed on an "AS IS"
|
||||
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
||||
; License for the specific language governing rights and limitations
|
||||
; under the License.
|
||||
;
|
||||
; The Original Code is ip65.
|
||||
;
|
||||
; The Initial Developer of the Original Code is Jonno Downes,
|
||||
; jonno@jamtronix.com.
|
||||
; Portions created by the Initial Developer are Copyright (C) 2009
|
||||
; Jonno Downes. All Rights Reserved.
|
||||
; -- LICENSE END --
|
@ -1,21 +1,10 @@
|
||||
.export get_key
|
||||
.export get_filtered_input
|
||||
.export filter_text
|
||||
.export filter_ip
|
||||
.export filter_dns
|
||||
.export filter_url
|
||||
.export filter_number
|
||||
.export check_for_abort_key
|
||||
.export get_key_if_available
|
||||
.export get_key_ip65
|
||||
|
||||
.import ip65_process
|
||||
|
||||
.include "zeropage.inc"
|
||||
.include "../inc/common.i"
|
||||
|
||||
allowed_ptr = ptr1
|
||||
|
||||
|
||||
.code
|
||||
|
||||
@ -58,127 +47,9 @@ check_for_abort_key:
|
||||
clc
|
||||
rts
|
||||
|
||||
; cribbed from http://codebase64.org/doku.php?id=base:robust_string_input
|
||||
; ======================================================================
|
||||
; Input a string and store it in GOTINPUT, terminated with a null byte.
|
||||
; AX is a pointer to the allowed list of characters, null-terminated.
|
||||
; set AX to $0000 for no filter on input
|
||||
; max # of chars in y returns num of chars entered in y.
|
||||
; ======================================================================
|
||||
; Main entry
|
||||
get_filtered_input:
|
||||
sty MAXCHARS
|
||||
stax temp_allowed
|
||||
|
||||
; Zero characters received.
|
||||
lda #$00
|
||||
sta INPUT_Y
|
||||
|
||||
; Wait for a character.
|
||||
@input_get:
|
||||
jsr get_key
|
||||
sta LASTCHAR
|
||||
|
||||
cmp #$14 ; Delete
|
||||
beq @delete
|
||||
|
||||
cmp #$0d ; Return
|
||||
beq @input_done
|
||||
|
||||
; End reached?
|
||||
lda INPUT_Y
|
||||
cmp MAXCHARS
|
||||
beq @input_get
|
||||
|
||||
; Check the allowed list of characters.
|
||||
ldax temp_allowed
|
||||
stax allowed_ptr ; since we are reusing this zero page, it may not stil be the same value since last time!
|
||||
|
||||
ldy #$00
|
||||
lda allowed_ptr+1 ; was the input filter point nul?
|
||||
beq @input_ok
|
||||
@check_allowed:
|
||||
lda (allowed_ptr),y ; Overwritten
|
||||
beq @input_get ; Reached end of list (0)
|
||||
|
||||
cmp LASTCHAR
|
||||
beq @input_ok ; Match found
|
||||
|
||||
; Not end or match, keep checking
|
||||
iny
|
||||
jmp @check_allowed
|
||||
|
||||
@input_ok:
|
||||
lda LASTCHAR ; Get the char back
|
||||
ldy INPUT_Y
|
||||
sta GOTINPUT,y ; Add it to string
|
||||
jsr $ffd2 ; Print it
|
||||
|
||||
inc INPUT_Y ; Next character
|
||||
|
||||
; Not yet.
|
||||
jmp @input_get
|
||||
|
||||
@input_done:
|
||||
ldy INPUT_Y
|
||||
beq @no_input
|
||||
lda #$00
|
||||
sta GOTINPUT,y ; Zero-terminate
|
||||
clc
|
||||
ldax #GOTINPUT
|
||||
rts
|
||||
@no_input:
|
||||
sec
|
||||
rts
|
||||
; Delete last character.
|
||||
@delete:
|
||||
; First, check if we're at the beginning. If so, just exit.
|
||||
lda INPUT_Y
|
||||
bne @delete_ok
|
||||
jmp @input_get
|
||||
|
||||
; At least one character entered.
|
||||
@delete_ok:
|
||||
; Move pointer back.
|
||||
dec INPUT_Y
|
||||
|
||||
; Store a zero over top of last character, just in case no other characters are entered.
|
||||
ldy INPUT_Y
|
||||
lda #$00
|
||||
sta GOTINPUT,y
|
||||
|
||||
; Print the delete char
|
||||
lda #$14
|
||||
jsr $ffd2
|
||||
|
||||
; Wait for next char
|
||||
jmp @input_get
|
||||
|
||||
; =================================================
|
||||
; Some example filters
|
||||
; =================================================
|
||||
filter_text:
|
||||
.byte ",!#'()* "
|
||||
filter_url:
|
||||
.byte ":/%&?+$"
|
||||
filter_dns:
|
||||
.byte "-ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||||
filter_ip:
|
||||
.byte "."
|
||||
filter_number:
|
||||
.byte "1234567890",0
|
||||
|
||||
|
||||
.bss
|
||||
|
||||
temp_allowed: .res 2
|
||||
MAXCHARS: .res 1
|
||||
LASTCHAR: .res 1
|
||||
INPUT_Y: .res 1
|
||||
GOTINPUT: .res 40
|
||||
|
||||
|
||||
|
||||
; -- LICENSE FOR vic20input.s --
|
||||
; The contents of this file are subject to the Mozilla Public License
|
||||
; Version 1.1 (the "License"); you may not use this file except in
|
||||
; compliance with the License. You may obtain a copy of the License at
|
||||
|
Loading…
Reference in New Issue
Block a user