dos33fsprogs/asoft_basic-utils/integer_detoken.c

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#include <stdio.h>
#include <string.h> /* strlen() */
#include <ctype.h> /* isalnum() */
#include "version.h"
/* with help from code by Paul Schlyter */
/* detokenizes Apple 2 integer basic programs */
/* re-tokenizing is hard, as some with same name */
/* such as PRINT have different tokens depending */
/* on arguments */
/* Integer Basic */
char integer_tokens[128][8]={
/* 00 */ "HIMEM:", "<$01>", "_", ":",
"LOAD ", "SAVE ", "CON ", "RUN", /* direct */
/* 08 */ "RUN", "DEL ", ",", "NEW",
"CLR", "AUTO", ",", "MAN",
/* 10 */ "HIMEM:", "LOMEM:", "+", "-", /* binary */
"*", "/", "=", "#",
/* 18 */ ">=", ">", "<=", "<>",
"<", " AND ", " OR ", " MOD ",
/* 20 */ "^", "+", "(", ",",
" THEN ", " THEN ", ",", ",",
/* 28 */ "\"", "\"", "(", "!",
"!", "(", " PEEK ", "RND",
/* 30 */ "SGN", "ABS", "PDL", "RNDX",
"(", "+", "-", " NOT ", /* unary */
/* 38 */ "(", "=", "#", "LEN(",
"ASC(", "SCRN(", ",", "(",
/* 40 */ "$", "$", "(", ",",
",", ";", ";", ";",
/* 48 */ ",", ",", ",", "TEXT", /* Statements */
"GR", "CALL ", "DIM ", "DIM ",
/* 50 */ "TAB ", "END", "INPUT ", "INPUT ",
"INPUT ", "FOR ", "=", " TO ",
/* 58 */ "STEP ", "NEXT ", ",", "RETURN",
"GOSUB ", "REM ", "LET ", "GOTO ",
/* 60 */ "IF ", "PRINT ", "PRINT ", "PRINT ",
"POKE ", ",", "COLOR=", "PLOT ",
/* 68 */ ",", "HLIN ", ",", " AT ",
"VLIN ", ",", " AT ", "VTAB ",
/* 70 */ "=", "=", ")", ")",
"LIST", ",", "LIST", "POP",
/* 78 */ "NODSP", "DSP", "NOTRACE","DSP",
"DSP", "TRACE", "PR#", "IN#"
};
#define REM_TOKEN 0x5D
#define UNARY_PLUS 0x35
#define UNARY_MINUS 0x36
#define QUOTE_START 0x28
#define QUOTE_END 0x29
int main(int argc, char **argv) {
int ch1;
int size1,size2;
int line_length;
int line1,line2;
int int1,int2;
int in_rem=0,in_quote=0,last_was_alpha=0,last_was_token=0;
int debug=0;
/* read size, first two bytes */
size1=fgetc(stdin);
size2=fgetc(stdin);
if (debug) fprintf(stderr,"Sign bytes: %x %x\n",size1,size2);
while(!feof(stdin)) {
in_rem=0;
in_quote=0;
last_was_alpha=0;
last_was_token=0;
line_length=fgetc(stdin);
if (debug) fprintf(stderr,"Line length: %d\n",line_length);
/* line number is little endian 16-bit value */
line1=fgetc(stdin);
line2=fgetc(stdin);
if (feof(stdin)) goto the_end;
printf("%4d ",((line2)<<8)+line1);
/* repeat until EOL character (1) */
while( (ch1=fgetc(stdin))!=0x1 ) {
/* if < 0x80 it's a token */
if (ch1<0x80) {
printf("%s",integer_tokens[ch1]);
if (ch1==REM_TOKEN) in_rem=1;
if (ch1==QUOTE_START) in_quote=1;
if (ch1==QUOTE_END) in_quote=0;
last_was_alpha=0;
last_was_token=1;
}
/* integer contant */
else if ((!in_rem) && (!in_quote) && (!last_was_alpha) &&
(ch1>=0xb0) && (ch1<=0xb9)) {
int1=fgetc(stdin);
int2=fgetc(stdin);
printf("%d",(int2<<8)+int1);
last_was_token=0;
}
/* otherwise it is an ascii char */
else {
fputc(ch1&0x7f,stdout);
last_was_alpha=isalnum(ch1&0x7f);
last_was_token=0;
}
}
printf("\n");
}
if (debug) fprintf(stderr,"Last was token: %d\n",last_was_token);
the_end:;
return 0;
}