FreeCalypso > hg > freecalypso-tools
view target-utils/libcommon/hexarg.c @ 416:30f6d1c32c6f
doc/Flash-boot-defect article removed (no longer relevant)
This article is no longer relevant because the issue in question
only affected one (1) defective FCDEV3B board which was not
and never will be sold.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | e7502631a0f9 |
children |
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/* * Many commands take hex arguments. This module contains the parse_hexarg() * function, which is a wrapper around strtoul that performs some additional * checks. */ #include <sys/types.h> #include <ctype.h> #include <stdlib.h> parse_hexarg(arg, maxdigits, valp) char *arg; int maxdigits; u_long *valp; { char *cp = arg, *bp; int len; if (cp[0] == '0' && (cp[1] == 'x' || cp[1] == 'X')) cp += 2; for (bp = cp; *cp; cp++) if (!isxdigit(*cp)) return(-1); len = cp - bp; if (len < 1 || len > maxdigits) return(-1); *valp = strtoul(arg, 0, 16); return(0); }