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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include "bas.h"
#include "bcdfp.h"
#include "linetab.h"
unsigned short startlineno = 10;
unsigned short increment = 10;
unsigned short limit = 0;
unsigned short newno;
int backwards = 0;
void print_help(void) {
printf("Usage: %s [-v] [-s start-lineno] [-i increment] [-f first-lineno] <inputfile> <outputfile>\n", self);
printf(" -v: Verbose.\n");
printf(" -s <num>: Starting line number (default: 10).\n");
printf(" -i <num>: Increment (default: 10).\n");
printf(" -f <num>: Don't renumber lines less than <num> (default: 0).\n");
printf(" -b: Number backwards (creates invalid program).\n");
}
unsigned short getlineno(char opt, const char *arg) {
int lineno;
char *e;
lineno = (int)strtol(arg, &e, 10);
if(*e) {
fprintf(stderr, "%s: Invalid line number for -%c option: %s is not a number.\n",
self, opt, arg);
exit(1);
}
if(lineno < 0 || lineno > 32767) {
fprintf(stderr, "%s: Invalid line number for -%c option: %d > 32767.\n",
self, opt, lineno);
exit(1);
}
return ((unsigned short)lineno);
}
void parse_args(int argc, char **argv) {
int opt;
while( (opt = getopt(argc, argv, "vbs:i:f:")) != -1) {
switch(opt) {
case 'v': verbose = 1; break;
case 'b': backwards = 1; break;
case 's': startlineno = getlineno(opt, optarg); break;
case 'i': increment = getlineno(opt, optarg); break;
case 'f': limit = getlineno(opt, optarg); break;
default:
print_help();
exit(1);
}
}
if(optind >= argc)
die("No input file given (use - for stdin).");
else
open_input(argv[optind]);
if(++optind >= argc)
die("No output file given (use - for stdout).");
else
output_filename = argv[optind];
}
CALLBACK(renumber_line) {
int i;
unsigned char fpnewno[6];
if(lineno < limit || lineno == 32768) return;
if(newno >= 32768) {
fprintf(stderr, "%s: Fatal: New line number %d would be >32767.\n", self, newno);
exit(1);
}
if(verbose)
fprintf(stderr, "Renumbering line %d as %d (%d refs).\n", lineno, newno, refcounts[lineno]);
int2fp(newno, fpnewno);
for(i = 0; i < refcounts[lineno]; i++)
memmove(program + linerefs[lineno][i].pos, fpnewno, 6);
setword(pos, newno);
if(backwards) {
if(newno < increment) {
fprintf(stderr, "%s: Fatal: New line number %d would be <0.\n", self, newno);
exit(1);
} else {
newno -= increment;
}
} else {
newno += increment;
}
}
void check_refs(void) {
int i, j;
for(i = 0; i < 32768; i++) {
if(refcounts[i] && !lines_exist[i]) {
for(j = 0; j < refcounts[i]; j++) {
fprintf(stderr, "%s: Warning: Line %d references nonexistent line %d.\n",
self, linerefs[i][j].lineno, i);
}
}
}
}
void renumber(void) {
check_refs();
newno = startlineno;
on_start_line = renumber_line;
walk_all_code();
}
int main(int argc, char **argv) {
set_self(*argv);
parse_general_args(argc, argv, print_help);
parse_args(argc, argv);
readfile();
parse_header();
build_ref_table();
renumber();
free_ref_table();
open_output(output_filename);
writefile();
return 0;
}
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