1 | /* |
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2 | * Copyright (c) 1990 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 | |
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18 | /* |
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19 | FUNCTION |
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20 | <<puts>>---write a character string |
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21 | |
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22 | INDEX |
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23 | puts |
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24 | INDEX |
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25 | _puts_r |
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26 | |
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27 | SYNOPSIS |
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28 | #include <stdio.h> |
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29 | int puts(const char *<[s]>); |
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30 | |
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31 | int _puts_r(struct _reent *<[reent]>, const char *<[s]>); |
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32 | |
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33 | DESCRIPTION |
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34 | <<puts>> writes the string at <[s]> (followed by a newline, instead of |
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35 | the trailing null) to the standard output stream. |
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36 | |
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37 | The alternate function <<_puts_r>> is a reentrant version. The extra |
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38 | argument <[reent]> is a pointer to a reentrancy structure. |
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39 | |
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40 | RETURNS |
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41 | If successful, the result is a nonnegative integer; otherwise, the |
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42 | result is <<EOF>>. |
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43 | |
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44 | PORTABILITY |
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45 | ANSI C requires <<puts>>, but does not specify that the result on |
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46 | success must be <<0>>; any non-negative value is permitted. |
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47 | |
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48 | Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, |
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49 | <<lseek>>, <<read>>, <<sbrk>>, <<write>>. |
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50 | */ |
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51 | |
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52 | #if defined(LIBC_SCCS) && !defined(lint) |
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53 | static char sccsid[] = "%W% (Berkeley) %G%"; |
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54 | #endif /* LIBC_SCCS and not lint */ |
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55 | |
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56 | #include <_ansi.h> |
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57 | #include <reent.h> |
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58 | #include <stdio.h> |
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59 | #include <string.h> |
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60 | #include "fvwrite.h" |
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61 | #include "local.h" |
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62 | |
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63 | /* |
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64 | * Write the given string to stdout, appending a newline. |
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65 | */ |
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66 | |
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67 | int |
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68 | _puts_r (struct _reent *ptr, |
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69 | const char * s) |
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70 | { |
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71 | #ifdef _FVWRITE_IN_STREAMIO |
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72 | int result; |
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73 | size_t c = strlen (s); |
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74 | struct __suio uio; |
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75 | struct __siov iov[2]; |
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76 | FILE *fp; |
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77 | |
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78 | iov[0].iov_base = s; |
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79 | iov[0].iov_len = c; |
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80 | iov[1].iov_base = "\n"; |
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81 | iov[1].iov_len = 1; |
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82 | uio.uio_resid = c + 1; |
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83 | uio.uio_iov = &iov[0]; |
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84 | uio.uio_iovcnt = 2; |
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85 | |
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86 | _REENT_SMALL_CHECK_INIT (ptr); |
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87 | fp = _stdout_r (ptr); |
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88 | CHECK_INIT (ptr, fp); |
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89 | _newlib_flockfile_start (fp); |
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90 | ORIENT (fp, -1); |
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91 | result = (__sfvwrite_r (ptr, fp, &uio) ? EOF : '\n'); |
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92 | _newlib_flockfile_end (fp); |
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93 | return result; |
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94 | #else |
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95 | int result = EOF; |
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96 | const char *p = s; |
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97 | FILE *fp; |
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98 | _REENT_SMALL_CHECK_INIT (ptr); |
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99 | |
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100 | fp = _stdout_r (ptr); |
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101 | CHECK_INIT (ptr, fp); |
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102 | _newlib_flockfile_start (fp); |
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103 | ORIENT (fp, -1); |
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104 | /* Make sure we can write. */ |
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105 | if (cantwrite (ptr, fp)) |
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106 | goto err; |
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107 | |
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108 | while (*p) |
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109 | { |
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110 | if (__sputc_r (ptr, *p++, fp) == EOF) |
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111 | goto err; |
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112 | } |
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113 | if (__sputc_r (ptr, '\n', fp) == EOF) |
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114 | goto err; |
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115 | |
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116 | result = '\n'; |
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117 | |
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118 | err: |
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119 | _newlib_flockfile_end (fp); |
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120 | return result; |
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121 | #endif |
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122 | } |
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123 | |
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124 | #ifndef _REENT_ONLY |
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125 | |
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126 | int |
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127 | puts (char const * s) |
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128 | { |
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129 | return _puts_r (_REENT, s); |
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130 | } |
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131 | |
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132 | #endif |
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