1 | /* |
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2 | * Copyright (c) 1990, 2007 The Regents of the University of California. |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms are permitted |
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6 | * provided that the above copyright notice and this paragraph are |
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7 | * duplicated in all such forms and that any documentation, |
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8 | * advertising materials, and other materials related to such |
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9 | * distribution and use acknowledge that the software was developed |
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10 | * by the University of California, Berkeley. The name of the |
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11 | * University may not be used to endorse or promote products derived |
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12 | * from this software without specific prior written permission. |
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13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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16 | */ |
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17 | /* doc in sprintf.c */ |
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18 | /* This code created by modifying sprintf.c so copyright inherited. */ |
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19 | |
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20 | #include <_ansi.h> |
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21 | #include <reent.h> |
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22 | #include <stdio.h> |
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23 | #include <stdarg.h> |
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24 | #include <limits.h> |
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25 | #include <errno.h> |
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26 | #include "local.h" |
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27 | |
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28 | int |
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29 | _snprintf_r (struct _reent *ptr, |
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30 | char *__restrict str, |
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31 | size_t size, |
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32 | const char *__restrict fmt, ...) |
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33 | { |
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34 | int ret; |
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35 | va_list ap; |
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36 | FILE f; |
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37 | |
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38 | if (size > INT_MAX) |
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39 | { |
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40 | ptr->_errno = EOVERFLOW; |
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41 | return EOF; |
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42 | } |
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43 | f._flags = __SWR | __SSTR; |
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44 | f._bf._base = f._p = (unsigned char *) str; |
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45 | f._bf._size = f._w = (size > 0 ? size - 1 : 0); |
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46 | f._file = -1; /* No file. */ |
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47 | va_start (ap, fmt); |
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48 | ret = _svfprintf_r (ptr, &f, fmt, ap); |
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49 | va_end (ap); |
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50 | if (ret < EOF) |
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51 | ptr->_errno = EOVERFLOW; |
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52 | if (size > 0) |
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53 | *f._p = 0; |
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54 | return (ret); |
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55 | } |
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56 | |
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57 | #ifdef _NANO_FORMATTED_IO |
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58 | int |
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59 | _sniprintf_r (struct _reent *, char *, size_t, const char *, ...) |
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60 | _ATTRIBUTE ((__alias__("_snprintf_r"))); |
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61 | #endif |
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62 | |
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63 | #ifndef _REENT_ONLY |
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64 | |
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65 | int |
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66 | snprintf (char *__restrict str, |
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67 | size_t size, |
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68 | const char *__restrict fmt, ...) |
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69 | { |
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70 | int ret; |
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71 | va_list ap; |
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72 | FILE f; |
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73 | struct _reent *ptr = _REENT; |
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74 | |
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75 | if (size > INT_MAX) |
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76 | { |
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77 | ptr->_errno = EOVERFLOW; |
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78 | return EOF; |
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79 | } |
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80 | f._flags = __SWR | __SSTR; |
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81 | f._bf._base = f._p = (unsigned char *) str; |
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82 | f._bf._size = f._w = (size > 0 ? size - 1 : 0); |
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83 | f._file = -1; /* No file. */ |
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84 | va_start (ap, fmt); |
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85 | ret = _svfprintf_r (ptr, &f, fmt, ap); |
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86 | va_end (ap); |
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87 | if (ret < EOF) |
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88 | ptr->_errno = EOVERFLOW; |
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89 | if (size > 0) |
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90 | *f._p = 0; |
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91 | return (ret); |
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92 | } |
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93 | |
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94 | #ifdef _NANO_FORMATTED_IO |
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95 | int |
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96 | sniprintf (char *, size_t, const char *, ...) |
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97 | _ATTRIBUTE ((__alias__("snprintf"))); |
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98 | #endif |
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99 | #endif |
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