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 | /* This code was copied from sprintf.c */ |
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18 | /* doc in sprintf.c */ |
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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 "local.h" |
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26 | |
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27 | int |
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28 | _asprintf_r (struct _reent *ptr, |
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29 | char **__restrict strp, |
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30 | const char *__restrict fmt, ...) |
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31 | { |
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32 | int ret; |
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33 | va_list ap; |
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34 | FILE f; |
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35 | |
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36 | /* mark a zero-length reallocatable buffer */ |
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37 | f._flags = __SWR | __SSTR | __SMBF; |
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38 | f._bf._base = f._p = NULL; |
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39 | f._bf._size = f._w = 0; |
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40 | f._file = -1; /* No file. */ |
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41 | va_start (ap, fmt); |
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42 | ret = _svfprintf_r (ptr, &f, fmt, ap); |
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43 | va_end (ap); |
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44 | if (ret >= 0) |
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45 | { |
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46 | *f._p = 0; |
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47 | *strp = (char *) f._bf._base; |
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48 | } |
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49 | return (ret); |
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50 | } |
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51 | |
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52 | #ifdef _NANO_FORMATTED_IO |
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53 | int |
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54 | _asiprintf_r (struct _reent *, char **, const char *, ...) |
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55 | _ATTRIBUTE ((__alias__("_asprintf_r"))); |
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56 | #endif |
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57 | |
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58 | #ifndef _REENT_ONLY |
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59 | |
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60 | int |
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61 | asprintf (char **__restrict strp, |
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62 | const char *__restrict fmt, ...) |
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63 | { |
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64 | int ret; |
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65 | va_list ap; |
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66 | FILE f; |
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67 | |
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68 | /* mark a zero-length reallocatable buffer */ |
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69 | f._flags = __SWR | __SSTR | __SMBF; |
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70 | f._bf._base = f._p = NULL; |
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71 | f._bf._size = f._w = 0; |
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72 | f._file = -1; /* No file. */ |
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73 | va_start (ap, fmt); |
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74 | ret = _svfprintf_r (_REENT, &f, fmt, ap); |
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75 | va_end (ap); |
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76 | if (ret >= 0) |
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77 | { |
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78 | *f._p = 0; |
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79 | *strp = (char *) f._bf._base; |
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80 | } |
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81 | return (ret); |
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82 | } |
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83 | |
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84 | #ifdef _NANO_FORMATTED_IO |
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85 | int |
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86 | asiprintf (char **, const char *, ...) |
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87 | _ATTRIBUTE ((__alias__("asprintf"))); |
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88 | #endif |
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89 | #endif /* ! _REENT_ONLY */ |
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