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cinput.c
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cinput.c
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/*
*******************************************************************
*** This software is copyright 2021 by Michael H Riley ***
*** You have permission to use, modify, copy, and distribute ***
*** this software so long as this copyright notice is retained. ***
*** This software may not be used in commercial applications ***
*** without express written permission from the author. ***
*******************************************************************
*/
#include "header.h"
char* cinput(char* line) {
int fp;
char qt;
word addr;
char name[256];
int pos;
line = trim(line);
if (lblF_inmsg == 0xffff) {
qt = 0;
while (*line != 0 && ((qt == 1) || (qt == 0 && *line != ':'))) {
if (*line == '"') qt = 1-qt;
line++;
}
return line;
}
if (*line == '"') {
Asm(" sep scall ; Display prompt");
Asm(" dw f_inmsg");
strcpy(buffer," db '");
line++;
while (*line != '"' && *line != 0) {
buffer[strlen(buffer)+1] = 0;
buffer[strlen(buffer)] = *line++;
}
strcat(buffer,"',0"); Asm(buffer);
if (*line == '"') line++;
line = trim(line);
if (*line != ',') {
showError("Syntax error");
*line = 0;
return line;
}
line++;
}
fp = 0;
line = trim(line);
while (*line != ':' && *line != 0) {
if (!(*line >= 'a' && *line <= 'z') &&
!(*line >= 'A' && *line <= 'Z')) {
showError("Syntax error");
*line = 0;
return line;
}
pos = 0;
while ((*line >= 'a' && *line <= 'z') ||
(*line >= 'A' && *line <= 'Z') ||
(*line >= '0' && *line <= '9') ||
*line == '_') {
name[pos++] = *line++;
if (useFp) {
if (*line == '!') {
name[pos++] = *line++;
fp = -1;
while ((*line >= 'a' && *line <= 'z') ||
(*line >= 'A' && *line <= 'Z') ||
(*line >= '0' && *line <= '9') ||
*line == '_') {
showError("Invalid variable name");
*line = 0;
return line;
}
}
}
}
name[pos] = 0;
if (strlen(name) == 0) {
showError("Syntax error");
*line = 0;
return line;
}
addr = getVariable(name);
Asm(" sep scall ; display question mark");
Asm(" dw f_inmsg");
Asm(" db '? ',0");
Asm(" ldi iobuffer.1 ; Point to keyboard buffer");
Asm(" phi rf");
Asm(" ldi iobuffer.0");
Asm(" plo rf");
Asm(" sep scall ; Get input from user");
Asm(" dw f_input");
Asm(" ldi iobuffer.1 ; Point to keyboard buffer");
Asm(" phi rf");
Asm(" ldi iobuffer.0");
Asm(" plo rf");
if (fp) {
sprintf(buffer," ldi v_%s.1 ; Point to destination variable",name); Asm(buffer);
Asm(" phi rd");
sprintf(buffer," ldi v_%s.0",name); Asm(buffer);
Asm(" plo rd");
Asm(" sep scall ; Convert ASCII to integer");
Asm(" dw atof");
}
else if (use32Bits) {
sprintf(buffer," ldi v_%s.1 ; Point to destination variable",name); Asm(buffer);
Asm(" phi rd");
sprintf(buffer," ldi v_%s.0",name); Asm(buffer);
Asm(" plo rd");
Asm(" sep scall ; Convert ASCII to integer");
Asm(" dw atoi32");
}
else {
Asm(" sep scall ; Convert ASCII to integer");
Asm(" dw atoi");
sprintf(buffer," ldi v_%s.1 ; Point to destination variable",name); Asm(buffer);
Asm(" phi rf");
sprintf(buffer," ldi v_%s.0",name); Asm(buffer);
Asm(" plo rf");
Asm(" ghi rc ; Store value into variable");
Asm(" str rf");
Asm(" inc rf");
Asm(" glo rc");
Asm(" str rf");
}
Asm(" sep scall ; Display cr/lf");
Asm(" dw f_inmsg");
Asm(" db 10,13,0");
line = trim(line);
if (*line != ':' && *line != ',' && *line != 0) {
showError("Syntax error");
*line = 0;
return line;
}
if (*line == ',') line++;
}
return line;
}