4.115
Last change
on this file since df40cc9 was
c499856,
checked in by Chris Johns <chrisj@…>, on 03/20/14 at 21:10:47
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Change all references of rtems.com to rtems.org.
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Property mode set to
100644
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File size:
1.3 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Convert String to Unsigned Character (with validation) |
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5 | * @ingroup libmisc_conv_help Conversion Helpers |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 2009. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * Copyright (c) 2011 Ralf Corsépius, Ulm, Germany. |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.org/license/LICENSE. |
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17 | */ |
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18 | |
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19 | #ifdef HAVE_CONFIG_H |
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20 | #include "config.h" |
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21 | #endif |
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22 | |
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23 | #include <errno.h> |
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24 | #include <stdlib.h> |
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25 | #include <limits.h> |
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26 | |
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27 | #include <rtems/stringto.h> |
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28 | |
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29 | /* |
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30 | * Instantiate an error checking wrapper for strtoul (unsigned char) |
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31 | */ |
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32 | |
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33 | rtems_status_code rtems_string_to_unsigned_char ( |
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34 | const char *s, |
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35 | unsigned char *n, |
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36 | char **endptr, |
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37 | int base |
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38 | ) |
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39 | { |
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40 | unsigned long result; |
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41 | char *end; |
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42 | |
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43 | if ( !n ) |
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44 | return RTEMS_INVALID_ADDRESS; |
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45 | |
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46 | errno = 0; |
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47 | *n = 0; |
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48 | |
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49 | result = strtoul( s, &end, base ); |
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50 | |
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51 | if ( endptr ) |
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52 | *endptr = end; |
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53 | |
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54 | if ( end == s ) |
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55 | return RTEMS_NOT_DEFINED; |
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56 | |
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57 | if ( ( errno == ERANGE ) && |
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58 | (( result == 0 ) || ( result == ULONG_MAX ))) |
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59 | return RTEMS_INVALID_NUMBER; |
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60 | |
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61 | #if (UCHAR_MAX < ULONG_MAX) |
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62 | if ( result > UCHAR_MAX ) { |
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63 | errno = ERANGE; |
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64 | return RTEMS_INVALID_NUMBER; |
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65 | } |
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66 | #endif |
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67 | |
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68 | *n = result; |
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69 | |
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70 | return RTEMS_SUCCESSFUL; |
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71 | } |
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