Cody Boone Ferguson
93963607f3
Swap order of alt and original code in build/try sections so that the original code is suggested second, after alt code, with the bugs and (mis)features added to the README.md file, pointing out that it'll only work on VAX-11 / PDP-11 machines. This is added in the bugs.md (it was actually missing from the bugs.md file). The alt code (both versions, see below) now have a lower limit on the microseconds at 500 (still defaults at 10000). This is because anything much lower and it's nigh impossible to see and in some cases it won't work at all (at least in the MacBook Pro with the M1 chip). Added second alt code which is like the first except that once it times out it starts over. Running make alt will compile both alt versions. The gentab.c file that I added (found from the author) and fixed to compile could not always create code that would compile due to some characters needing to be escaped like ' and \. These are now escaped if they are encountered but there certainly could be more that I did not think of that would have to be escaped.
56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "a.out.h"
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main(argc, argv) char **argv;
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{
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register FILE *fp;
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register short pos = 0, c, n;
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register char *fmt = "";
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if (argc != 2) {
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fprintf (stderr, "Usage: %s file\n", argv[0]);
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exit (1);
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}
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if ((fp = fopen(argv[1], "r")) == NULL) {
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fprintf(stderr, "%s: can't open %s\n", argv[0], argv[1]);
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exit(2);
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}
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fseek (fp, (long) sizeof (struct exec), 0);
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printf("/* portable between VAX and PDP11 */\n\n");
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printf ("short main[] = {\n");
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for (;;) {
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if (pos == 0)
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printf("\t");
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c=getc(fp) & 0377;
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if (feof(fp)) break;
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n = getc(fp) << 8|c;
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switch (rand() % 5) {
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case 0:
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case 1:
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fmt = "%d"; break;
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case 2:
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fmt = "%u"; break;
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case 3:
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fmt = "0%o"; break;
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case 4:
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fmt = "0x%x"; break;
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}
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if (n == '\\' || n == '\'') fmt = "'\\%c'";
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else if (32 <= n && n < 127 && (rand() % 4)) fmt = "'%c'";
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printf(n < 8 ? "%d" : fmt, n);
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printf(",");
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if (pos++ == 8) {
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printf("\n");
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pos = 0;
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}
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else printf(" ");
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}
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printf("};\n");
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}
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