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