diff options
Diffstat (limited to 'cpukit/libmisc/stringto/stringtounsignedint.c')
-rw-r--r-- | cpukit/libmisc/stringto/stringtounsignedint.c | 54 |
1 files changed, 48 insertions, 6 deletions
diff --git a/cpukit/libmisc/stringto/stringtounsignedint.c b/cpukit/libmisc/stringto/stringtounsignedint.c index 681a197d14..9821beff87 100644 --- a/cpukit/libmisc/stringto/stringtounsignedint.c +++ b/cpukit/libmisc/stringto/stringtounsignedint.c @@ -2,6 +2,8 @@ * COPYRIGHT (c) 2009. * On-Line Applications Research Corporation (OAR). * + * Copyright (c) 2011 Ralf Corsépius, Ulm, Germany. + * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rtems.com/license/LICENSE. @@ -13,12 +15,52 @@ #include "config.h" #endif +#include <errno.h> +#include <stdlib.h> +#include <limits.h> + +#include <rtems/stringto.h> + /* * Instantiate an error checking wrapper for strtoul (unsigned int) */ -#define STRING_TO_INTEGER -#define STRING_TO_TYPE unsigned int -#define STRING_TO_NAME rtems_string_to_unsigned_int -#define STRING_TO_METHOD strtoul -#define STRING_TO_MAX ULONG_MAX -#include "stringto_template.h" + +rtems_status_code rtems_string_to_unsigned_int ( + const char *s, + unsigned int *n, + char **endptr, + int base +) +{ + unsigned long result; + char *end; + + if ( !n ) + return RTEMS_INVALID_ADDRESS; + + errno = 0; + *n = 0; + + result = strtoul( s, &end, base ); + + if ( endptr ) + *endptr = end; + + if ( end == s ) + return RTEMS_NOT_DEFINED; + + if ( ( errno == ERANGE ) && + (( result == 0 ) || ( result == ULONG_MAX ))) + return RTEMS_INVALID_NUMBER; + +#if (UINT_MAX < ULONG_MAX) + if ( result > UINT_MAX ) { + errno = ERANGE; + return RTEMS_INVALID_NUMBER; + } +#endif + + *n = result; + + return RTEMS_SUCCESSFUL; +} |