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shuf: in -i RANGE, accept numbers up to width of pointers

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function                                             old     new   delta
.rodata                                           108468  108474      +6
shuf_main                                            555     542     -13

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2021-08-29 14:39:01 +02:00
parent 60f4843468
commit 49a2e484b5
1 changed files with 28 additions and 10 deletions
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38
coreutils/shuf.c
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@ -90,7 +90,7 @@ int shuf_main(int argc, char **argv)
if (opts & OPT_i) {
/* create a range of numbers */
char *dash;
unsigned lo, hi;
uintptr_t lo, hi;
if (argv[0])
bb_show_usage();
@ -100,8 +100,17 @@ int shuf_main(int argc, char **argv)
bb_error_msg_and_die("bad range '%s'", opt_i_str);
}
*dash = '\0';
lo = xatou(opt_i_str);
hi = xatou(dash + 1);
if (sizeof(lo) == sizeof(int)) {
lo = xatou(opt_i_str);
hi = xatou(dash + 1);
} else
if (sizeof(lo) == sizeof(long)) {
lo = xatoul(opt_i_str);
hi = xatoul(dash + 1);
} else {
lo = xatoull(opt_i_str);
hi = xatoull(dash + 1);
}
*dash = '-';
if (hi < lo) {
bb_error_msg_and_die("bad range '%s'", opt_i_str);
@ -110,17 +119,21 @@ int shuf_main(int argc, char **argv)
numlines = (hi+1) - lo;
lines = xmalloc(numlines * sizeof(lines[0]));
for (i = 0; i < numlines; i++) {
lines[i] = (char*)(uintptr_t)lo;
lines[i] = (char*)lo;
lo++;
}
} else {
/* default - read lines from stdin or the input file */
FILE *fp;
const char *fname = "-";
if (argc > 1)
bb_show_usage();
if (argv[0]) {
if (argv[1])
bb_show_usage();
fname = argv[0];
}
fp = xfopen_stdin(argv[0] ? argv[0] : "-");
fp = xfopen_stdin(fname);
lines = NULL;
numlines = 0;
for (;;) {
@ -150,9 +163,14 @@ int shuf_main(int argc, char **argv)
eol = '\0';
for (i = numlines - outlines; i < numlines; i++) {
if (opts & OPT_i)
printf("%u%c", (unsigned)(uintptr_t)lines[i], eol);
else
if (opts & OPT_i) {
if (sizeof(lines[0]) == sizeof(int))
printf("%u%c", (unsigned)(uintptr_t)lines[i], eol);
else if (sizeof(lines[0]) == sizeof(long))
printf("%lu%c", (unsigned long)(uintptr_t)lines[i], eol);
else
printf("%llu%c", (unsigned long long)(uintptr_t)lines[i], eol);
} else
printf("%s%c", lines[i], eol);
}