forked from Imagelibrary/rtems
79 lines
1.3 KiB
C
79 lines
1.3 KiB
C
/**
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* @file
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*
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* @brief Convert String to Int (with validation)
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* @ingroup libmisc_conv_help Conversion Helpers
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*/
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/*
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* COPYRIGHT (c) 2009.
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* On-Line Applications Research Corporation (OAR).
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*
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* Copyright (c) 2011 Ralf Corsépius, Ulm, Germany.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <errno.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <rtems/stringto.h>
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/*
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* Instantiate an error checking wrapper for strtol (int)
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*/
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rtems_status_code rtems_string_to_int (
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const char *s,
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int *n,
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char **endptr,
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int base
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)
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{
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long result;
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char *end;
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if ( !n )
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return RTEMS_INVALID_ADDRESS;
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errno = 0;
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*n = 0;
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result = strtol( s, &end, base );
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if ( endptr )
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*endptr = end;
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if ( end == s )
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return RTEMS_NOT_DEFINED;
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if ( ( errno == ERANGE ) &&
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(( result == 0 ) || ( result == LONG_MAX ) || ( result == LONG_MIN )))
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return RTEMS_INVALID_NUMBER;
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#if (INT_MAX < LONG_MAX)
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if ( result > INT_MAX ) {
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errno = ERANGE;
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return RTEMS_INVALID_NUMBER;
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}
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#endif
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#if (INT_MIN < LONG_MIN)
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if ( result < INT_MIN ) {
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errno = ERANGE;
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return RTEMS_INVALID_NUMBER;
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}
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#endif
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*n = result;
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return RTEMS_SUCCESSFUL;
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}
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