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num conversions: allow for leading '+' (renice needs that)

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This commit is contained in:
Denis Vlasenko 2007-12-11 13:15:11 +00:00
parent d7e2e127a9
commit 2cd4a747e5
1 changed files with 7 additions and 5 deletions
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12
libbb/xatonum_template.c
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@ -21,9 +21,8 @@ unsigned type xstrtou(_range_sfx)(const char *numstr, int base,
int old_errno; int old_errno;
char *e; char *e;
/* Disallow '-' and any leading whitespace. Speed isn't critical here /* Disallow '-' and any leading whitespace. Make sure we get the
* since we're parsing commandline args. So make sure we get the * actual isspace function rather than a macro implementaion. */
* actual isspace function rather than a lnumstrer macro implementaion. */
if (*numstr == '-' || *numstr == '+' || (isspace)(*numstr)) if (*numstr == '-' || *numstr == '+' || (isspace)(*numstr))
goto inval; goto inval;
@ -127,9 +126,12 @@ type xstrto(_range_sfx)(const char *numstr, int base,
type r; type r;
const char *p = numstr; const char *p = numstr;
if (p[0] == '-') { /* NB: if you'll decide to disallow '+':
* at least renice applet needs to allow it */
if (p[0] == '+' || p[0] == '-') {
++p; ++p;
++u; /* two's complement */ if (p[0] == '-')
++u; /* = <type>_MIN (01111... + 1 == 10000...) */
} }
r = xstrtou(_range_sfx)(p, base, 0, u, suffixes); r = xstrtou(_range_sfx)(p, base, 0, u, suffixes);