Mercurial > hg > octave-kai > gnulib-hg
annotate lib/string.in.h @ 11624:82b5a4d577af
docs: memchr is no longer obsolete
* MODULES.html.sh: Move memchr from obsolete to string.h section.
* lib/string.in.h (memchr): Simplify logic.
Signed-off-by: Eric Blake <ebb9@byu.net>
author | Eric Blake <ebb9@byu.net> |
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date | Mon, 15 Jun 2009 07:49:35 -0600 |
parents | c98fca1ff8b8 |
children | ff3dd373542b |
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1 /* A GNU-like <string.h>. |
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2 |
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3 Copyright (C) 1995-1996, 2001-2009 Free Software Foundation, Inc. |
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4 |
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5 This program is free software; you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 2, or (at your option) |
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8 any later version. |
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9 |
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10 This program is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 GNU General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU General Public License |
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16 along with this program; if not, write to the Free Software Foundation, |
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ |
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18 |
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19 #ifndef _GL_STRING_H |
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20 |
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21 #if __GNUC__ >= 3 |
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22 @PRAGMA_SYSTEM_HEADER@ |
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23 #endif |
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24 |
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25 /* The include_next requires a split double-inclusion guard. */ |
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26 #@INCLUDE_NEXT@ @NEXT_STRING_H@ |
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27 |
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28 #ifndef _GL_STRING_H |
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29 #define _GL_STRING_H |
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30 |
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31 |
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32 #ifndef __attribute__ |
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33 /* This feature is available in gcc versions 2.5 and later. */ |
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34 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) |
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35 # define __attribute__(Spec) /* empty */ |
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36 # endif |
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37 /* The attribute __pure__ was added in gcc 2.96. */ |
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38 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) |
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39 # define __pure__ /* empty */ |
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40 # endif |
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41 #endif |
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42 |
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43 |
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44 /* The definition of GL_LINK_WARNING is copied here. */ |
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45 |
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46 |
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47 #ifdef __cplusplus |
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48 extern "C" { |
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49 #endif |
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50 |
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51 |
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52 /* Return the first instance of C within N bytes of S, or NULL. */ |
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53 #if @GNULIB_MEMCHR@ |
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54 # if @REPLACE_MEMCHR@ |
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55 # define memchr rpl_memchr |
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56 extern void *memchr (void const *__s, int __c, size_t __n) |
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57 __attribute__ ((__pure__)); |
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58 # endif |
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59 #elif defined GNULIB_POSIXCHECK |
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60 # undef memchr |
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61 # define memchr(s,c,n) \ |
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62 (GL_LINK_WARNING ("memchr has platform-specific bugs - " \ |
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63 "use gnulib module memchr for portability" ), \ |
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64 memchr (s, c, n)) |
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65 #endif |
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66 |
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67 /* Return the first occurrence of NEEDLE in HAYSTACK. */ |
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68 #if @GNULIB_MEMMEM@ |
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69 # if @REPLACE_MEMMEM@ |
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70 # define memmem rpl_memmem |
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71 # endif |
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72 # if ! @HAVE_DECL_MEMMEM@ || @REPLACE_MEMMEM@ |
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73 extern void *memmem (void const *__haystack, size_t __haystack_len, |
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74 void const *__needle, size_t __needle_len) |
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75 __attribute__ ((__pure__)); |
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76 # endif |
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77 #elif defined GNULIB_POSIXCHECK |
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78 # undef memmem |
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79 # define memmem(a,al,b,bl) \ |
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80 (GL_LINK_WARNING ("memmem is unportable and often quadratic - " \ |
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81 "use gnulib module memmem-simple for portability, " \ |
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82 "and module memmem for speed" ), \ |
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83 memmem (a, al, b, bl)) |
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84 #endif |
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85 |
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86 /* Copy N bytes of SRC to DEST, return pointer to bytes after the |
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87 last written byte. */ |
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88 #if @GNULIB_MEMPCPY@ |
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89 # if ! @HAVE_MEMPCPY@ |
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90 extern void *mempcpy (void *restrict __dest, void const *restrict __src, |
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91 size_t __n); |
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92 # endif |
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93 #elif defined GNULIB_POSIXCHECK |
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94 # undef mempcpy |
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95 # define mempcpy(a,b,n) \ |
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96 (GL_LINK_WARNING ("mempcpy is unportable - " \ |
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97 "use gnulib module mempcpy for portability"), \ |
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98 mempcpy (a, b, n)) |
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99 #endif |
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100 |
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101 /* Search backwards through a block for a byte (specified as an int). */ |
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102 #if @GNULIB_MEMRCHR@ |
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103 # if ! @HAVE_DECL_MEMRCHR@ |
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104 extern void *memrchr (void const *, int, size_t) |
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105 __attribute__ ((__pure__)); |
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106 # endif |
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107 #elif defined GNULIB_POSIXCHECK |
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108 # undef memrchr |
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109 # define memrchr(a,b,c) \ |
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110 (GL_LINK_WARNING ("memrchr is unportable - " \ |
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111 "use gnulib module memrchr for portability"), \ |
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112 memrchr (a, b, c)) |
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113 #endif |
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114 |
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115 /* Find the first occurrence of C in S. More efficient than |
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116 memchr(S,C,N), at the expense of undefined behavior if C does not |
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117 occur within N bytes. */ |
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118 #if @GNULIB_RAWMEMCHR@ |
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119 # if ! @HAVE_RAWMEMCHR@ |
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120 extern void *rawmemchr (void const *__s, int __c_in) |
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121 __attribute__ ((__pure__)); |
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122 # endif |
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123 #elif defined GNULIB_POSIXCHECK |
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124 # undef rawmemchr |
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125 # define rawmemchr(a,b) \ |
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126 (GL_LINK_WARNING ("rawmemchr is unportable - " \ |
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127 "use gnulib module rawmemchr for portability"), \ |
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128 rawmemchr (a, b)) |
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129 #endif |
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130 |
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131 /* Copy SRC to DST, returning the address of the terminating '\0' in DST. */ |
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132 #if @GNULIB_STPCPY@ |
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133 # if ! @HAVE_STPCPY@ |
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134 extern char *stpcpy (char *restrict __dst, char const *restrict __src); |
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135 # endif |
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136 #elif defined GNULIB_POSIXCHECK |
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137 # undef stpcpy |
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138 # define stpcpy(a,b) \ |
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139 (GL_LINK_WARNING ("stpcpy is unportable - " \ |
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140 "use gnulib module stpcpy for portability"), \ |
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141 stpcpy (a, b)) |
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142 #endif |
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143 |
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144 /* Copy no more than N bytes of SRC to DST, returning a pointer past the |
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145 last non-NUL byte written into DST. */ |
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146 #if @GNULIB_STPNCPY@ |
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147 # if ! @HAVE_STPNCPY@ |
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148 # define stpncpy gnu_stpncpy |
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149 extern char *stpncpy (char *restrict __dst, char const *restrict __src, |
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150 size_t __n); |
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151 # endif |
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152 #elif defined GNULIB_POSIXCHECK |
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153 # undef stpncpy |
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154 # define stpncpy(a,b,n) \ |
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155 (GL_LINK_WARNING ("stpncpy is unportable - " \ |
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156 "use gnulib module stpncpy for portability"), \ |
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157 stpncpy (a, b, n)) |
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158 #endif |
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159 |
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160 #if defined GNULIB_POSIXCHECK |
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161 /* strchr() does not work with multibyte strings if the locale encoding is |
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162 GB18030 and the character to be searched is a digit. */ |
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163 # undef strchr |
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164 # define strchr(s,c) \ |
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165 (GL_LINK_WARNING ("strchr cannot work correctly on character strings " \ |
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166 "in some multibyte locales - " \ |
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167 "use mbschr if you care about internationalization"), \ |
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168 strchr (s, c)) |
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169 #endif |
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170 |
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171 /* Find the first occurrence of C in S or the final NUL byte. */ |
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172 #if @GNULIB_STRCHRNUL@ |
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173 # if ! @HAVE_STRCHRNUL@ |
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174 extern char *strchrnul (char const *__s, int __c_in) |
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175 __attribute__ ((__pure__)); |
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176 # endif |
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177 #elif defined GNULIB_POSIXCHECK |
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178 # undef strchrnul |
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179 # define strchrnul(a,b) \ |
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180 (GL_LINK_WARNING ("strchrnul is unportable - " \ |
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181 "use gnulib module strchrnul for portability"), \ |
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182 strchrnul (a, b)) |
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183 #endif |
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184 |
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185 /* Duplicate S, returning an identical malloc'd string. */ |
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186 #if @GNULIB_STRDUP@ |
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187 # if @REPLACE_STRDUP@ |
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188 # undef strdup |
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189 # define strdup rpl_strdup |
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190 # endif |
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191 # if !(@HAVE_DECL_STRDUP@ || defined strdup) || @REPLACE_STRDUP@ |
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192 extern char *strdup (char const *__s); |
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193 # endif |
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194 #elif defined GNULIB_POSIXCHECK |
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195 # undef strdup |
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196 # define strdup(a) \ |
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197 (GL_LINK_WARNING ("strdup is unportable - " \ |
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198 "use gnulib module strdup for portability"), \ |
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199 strdup (a)) |
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200 #endif |
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201 |
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202 /* Return a newly allocated copy of at most N bytes of STRING. */ |
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203 #if @GNULIB_STRNDUP@ |
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204 # if ! @HAVE_STRNDUP@ |
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205 # undef strndup |
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206 # define strndup rpl_strndup |
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207 # endif |
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208 # if ! @HAVE_STRNDUP@ || ! @HAVE_DECL_STRNDUP@ |
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209 extern char *strndup (char const *__string, size_t __n); |
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210 # endif |
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211 #elif defined GNULIB_POSIXCHECK |
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212 # undef strndup |
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213 # define strndup(a,n) \ |
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214 (GL_LINK_WARNING ("strndup is unportable - " \ |
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215 "use gnulib module strndup for portability"), \ |
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216 strndup (a, n)) |
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217 #endif |
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218 |
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219 /* Find the length (number of bytes) of STRING, but scan at most |
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220 MAXLEN bytes. If no '\0' terminator is found in that many bytes, |
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221 return MAXLEN. */ |
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222 #if @GNULIB_STRNLEN@ |
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223 # if ! @HAVE_DECL_STRNLEN@ |
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224 extern size_t strnlen (char const *__string, size_t __maxlen) |
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225 __attribute__ ((__pure__)); |
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226 # endif |
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227 #elif defined GNULIB_POSIXCHECK |
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228 # undef strnlen |
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229 # define strnlen(a,n) \ |
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230 (GL_LINK_WARNING ("strnlen is unportable - " \ |
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231 "use gnulib module strnlen for portability"), \ |
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232 strnlen (a, n)) |
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233 #endif |
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234 |
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235 #if defined GNULIB_POSIXCHECK |
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236 /* strcspn() assumes the second argument is a list of single-byte characters. |
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237 Even in this simple case, it does not work with multibyte strings if the |
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238 locale encoding is GB18030 and one of the characters to be searched is a |
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239 digit. */ |
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240 # undef strcspn |
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241 # define strcspn(s,a) \ |
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242 (GL_LINK_WARNING ("strcspn cannot work correctly on character strings " \ |
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243 "in multibyte locales - " \ |
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244 "use mbscspn if you care about internationalization"), \ |
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245 strcspn (s, a)) |
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246 #endif |
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247 |
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248 /* Find the first occurrence in S of any character in ACCEPT. */ |
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249 #if @GNULIB_STRPBRK@ |
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250 # if ! @HAVE_STRPBRK@ |
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251 extern char *strpbrk (char const *__s, char const *__accept) |
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252 __attribute__ ((__pure__)); |
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253 # endif |
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254 # if defined GNULIB_POSIXCHECK |
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255 /* strpbrk() assumes the second argument is a list of single-byte characters. |
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256 Even in this simple case, it does not work with multibyte strings if the |
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257 locale encoding is GB18030 and one of the characters to be searched is a |
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258 digit. */ |
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259 # undef strpbrk |
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260 # define strpbrk(s,a) \ |
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261 (GL_LINK_WARNING ("strpbrk cannot work correctly on character strings " \ |
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262 "in multibyte locales - " \ |
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263 "use mbspbrk if you care about internationalization"), \ |
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264 strpbrk (s, a)) |
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265 # endif |
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266 #elif defined GNULIB_POSIXCHECK |
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267 # undef strpbrk |
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268 # define strpbrk(s,a) \ |
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269 (GL_LINK_WARNING ("strpbrk is unportable - " \ |
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270 "use gnulib module strpbrk for portability"), \ |
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271 strpbrk (s, a)) |
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272 #endif |
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273 |
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274 #if defined GNULIB_POSIXCHECK |
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275 /* strspn() assumes the second argument is a list of single-byte characters. |
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276 Even in this simple case, it cannot work with multibyte strings. */ |
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277 # undef strspn |
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278 # define strspn(s,a) \ |
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279 (GL_LINK_WARNING ("strspn cannot work correctly on character strings " \ |
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280 "in multibyte locales - " \ |
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281 "use mbsspn if you care about internationalization"), \ |
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282 strspn (s, a)) |
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283 #endif |
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284 |
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285 #if defined GNULIB_POSIXCHECK |
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286 /* strrchr() does not work with multibyte strings if the locale encoding is |
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287 GB18030 and the character to be searched is a digit. */ |
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288 # undef strrchr |
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289 # define strrchr(s,c) \ |
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290 (GL_LINK_WARNING ("strrchr cannot work correctly on character strings " \ |
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291 "in some multibyte locales - " \ |
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292 "use mbsrchr if you care about internationalization"), \ |
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293 strrchr (s, c)) |
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294 #endif |
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295 |
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296 /* Search the next delimiter (char listed in DELIM) starting at *STRINGP. |
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297 If one is found, overwrite it with a NUL, and advance *STRINGP |
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298 to point to the next char after it. Otherwise, set *STRINGP to NULL. |
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299 If *STRINGP was already NULL, nothing happens. |
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300 Return the old value of *STRINGP. |
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301 |
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302 This is a variant of strtok() that is multithread-safe and supports |
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303 empty fields. |
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304 |
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305 Caveat: It modifies the original string. |
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306 Caveat: These functions cannot be used on constant strings. |
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307 Caveat: The identity of the delimiting character is lost. |
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308 Caveat: It doesn't work with multibyte strings unless all of the delimiter |
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309 characters are ASCII characters < 0x30. |
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310 |
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311 See also strtok_r(). */ |
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312 #if @GNULIB_STRSEP@ |
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313 # if ! @HAVE_STRSEP@ |
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314 extern char *strsep (char **restrict __stringp, char const *restrict __delim); |
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315 # endif |
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316 # if defined GNULIB_POSIXCHECK |
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317 # undef strsep |
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318 # define strsep(s,d) \ |
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319 (GL_LINK_WARNING ("strsep cannot work correctly on character strings " \ |
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320 "in multibyte locales - " \ |
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321 "use mbssep if you care about internationalization"), \ |
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322 strsep (s, d)) |
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323 # endif |
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324 #elif defined GNULIB_POSIXCHECK |
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325 # undef strsep |
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326 # define strsep(s,d) \ |
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327 (GL_LINK_WARNING ("strsep is unportable - " \ |
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328 "use gnulib module strsep for portability"), \ |
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329 strsep (s, d)) |
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330 #endif |
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331 |
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332 #if @GNULIB_STRSTR@ |
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333 # if @REPLACE_STRSTR@ |
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334 # define strstr rpl_strstr |
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335 char *strstr (const char *haystack, const char *needle) |
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336 __attribute__ ((__pure__)); |
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337 # endif |
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338 #elif defined GNULIB_POSIXCHECK |
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339 /* strstr() does not work with multibyte strings if the locale encoding is |
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340 different from UTF-8: |
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341 POSIX says that it operates on "strings", and "string" in POSIX is defined |
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342 as a sequence of bytes, not of characters. */ |
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343 # undef strstr |
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344 # define strstr(a,b) \ |
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345 (GL_LINK_WARNING ("strstr is quadratic on many systems, and cannot " \ |
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346 "work correctly on character strings in most " \ |
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347 "multibyte locales - " \ |
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348 "use mbsstr if you care about internationalization, " \ |
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349 "or use strstr if you care about speed"), \ |
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350 strstr (a, b)) |
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351 #endif |
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352 |
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353 /* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive |
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354 comparison. */ |
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355 #if @GNULIB_STRCASESTR@ |
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356 # if @REPLACE_STRCASESTR@ |
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357 # define strcasestr rpl_strcasestr |
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358 # endif |
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359 # if ! @HAVE_STRCASESTR@ || @REPLACE_STRCASESTR@ |
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360 extern char *strcasestr (const char *haystack, const char *needle) |
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361 __attribute__ ((__pure__)); |
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362 # endif |
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363 #elif defined GNULIB_POSIXCHECK |
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364 /* strcasestr() does not work with multibyte strings: |
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365 It is a glibc extension, and glibc implements it only for unibyte |
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366 locales. */ |
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367 # undef strcasestr |
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368 # define strcasestr(a,b) \ |
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369 (GL_LINK_WARNING ("strcasestr does work correctly on character strings " \ |
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370 "in multibyte locales - " \ |
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371 "use mbscasestr if you care about " \ |
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372 "internationalization, or use c-strcasestr if you want " \ |
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373 "a locale independent function"), \ |
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374 strcasestr (a, b)) |
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375 #endif |
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376 |
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377 /* Parse S into tokens separated by characters in DELIM. |
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378 If S is NULL, the saved pointer in SAVE_PTR is used as |
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379 the next starting point. For example: |
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380 char s[] = "-abc-=-def"; |
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381 char *sp; |
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382 x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def" |
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383 x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL |
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384 x = strtok_r(NULL, "=", &sp); // x = NULL |
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385 // s = "abc\0-def\0" |
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386 |
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387 This is a variant of strtok() that is multithread-safe. |
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388 |
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389 For the POSIX documentation for this function, see: |
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390 http://www.opengroup.org/susv3xsh/strtok.html |
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391 |
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392 Caveat: It modifies the original string. |
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393 Caveat: These functions cannot be used on constant strings. |
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394 Caveat: The identity of the delimiting character is lost. |
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395 Caveat: It doesn't work with multibyte strings unless all of the delimiter |
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396 characters are ASCII characters < 0x30. |
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397 |
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398 See also strsep(). */ |
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399 #if @GNULIB_STRTOK_R@ |
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400 # if ! @HAVE_DECL_STRTOK_R@ |
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401 extern char *strtok_r (char *restrict s, char const *restrict delim, |
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402 char **restrict save_ptr); |
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403 # endif |
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404 # if defined GNULIB_POSIXCHECK |
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405 # undef strtok_r |
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406 # define strtok_r(s,d,p) \ |
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407 (GL_LINK_WARNING ("strtok_r cannot work correctly on character strings " \ |
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408 "in multibyte locales - " \ |
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409 "use mbstok_r if you care about internationalization"), \ |
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410 strtok_r (s, d, p)) |
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411 # endif |
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412 #elif defined GNULIB_POSIXCHECK |
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413 # undef strtok_r |
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414 # define strtok_r(s,d,p) \ |
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415 (GL_LINK_WARNING ("strtok_r is unportable - " \ |
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416 "use gnulib module strtok_r for portability"), \ |
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417 strtok_r (s, d, p)) |
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418 #endif |
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419 |
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420 |
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421 /* The following functions are not specified by POSIX. They are gnulib |
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422 extensions. */ |
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423 |
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424 #if @GNULIB_MBSLEN@ |
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425 /* Return the number of multibyte characters in the character string STRING. |
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426 This considers multibyte characters, unlike strlen, which counts bytes. */ |
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427 extern size_t mbslen (const char *string); |
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428 #endif |
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429 |
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430 #if @GNULIB_MBSNLEN@ |
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431 /* Return the number of multibyte characters in the character string starting |
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432 at STRING and ending at STRING + LEN. */ |
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433 extern size_t mbsnlen (const char *string, size_t len); |
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434 #endif |
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435 |
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436 #if @GNULIB_MBSCHR@ |
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437 /* Locate the first single-byte character C in the character string STRING, |
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438 and return a pointer to it. Return NULL if C is not found in STRING. |
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439 Unlike strchr(), this function works correctly in multibyte locales with |
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440 encodings such as GB18030. */ |
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441 # define mbschr rpl_mbschr /* avoid collision with HP-UX function */ |
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442 extern char * mbschr (const char *string, int c); |
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443 #endif |
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444 |
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445 #if @GNULIB_MBSRCHR@ |
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446 /* Locate the last single-byte character C in the character string STRING, |
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447 and return a pointer to it. Return NULL if C is not found in STRING. |
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448 Unlike strrchr(), this function works correctly in multibyte locales with |
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449 encodings such as GB18030. */ |
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450 # define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */ |
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451 extern char * mbsrchr (const char *string, int c); |
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452 #endif |
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453 |
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454 #if @GNULIB_MBSSTR@ |
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455 /* Find the first occurrence of the character string NEEDLE in the character |
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456 string HAYSTACK. Return NULL if NEEDLE is not found in HAYSTACK. |
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457 Unlike strstr(), this function works correctly in multibyte locales with |
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458 encodings different from UTF-8. */ |
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459 extern char * mbsstr (const char *haystack, const char *needle); |
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460 #endif |
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461 |
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462 #if @GNULIB_MBSCASECMP@ |
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463 /* Compare the character strings S1 and S2, ignoring case, returning less than, |
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464 equal to or greater than zero if S1 is lexicographically less than, equal to |
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465 or greater than S2. |
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466 Note: This function may, in multibyte locales, return 0 for strings of |
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467 different lengths! |
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468 Unlike strcasecmp(), this function works correctly in multibyte locales. */ |
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469 extern int mbscasecmp (const char *s1, const char *s2); |
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470 #endif |
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471 |
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472 #if @GNULIB_MBSNCASECMP@ |
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473 /* Compare the initial segment of the character string S1 consisting of at most |
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474 N characters with the initial segment of the character string S2 consisting |
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475 of at most N characters, ignoring case, returning less than, equal to or |
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476 greater than zero if the initial segment of S1 is lexicographically less |
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477 than, equal to or greater than the initial segment of S2. |
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478 Note: This function may, in multibyte locales, return 0 for initial segments |
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479 of different lengths! |
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480 Unlike strncasecmp(), this function works correctly in multibyte locales. |
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481 But beware that N is not a byte count but a character count! */ |
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482 extern int mbsncasecmp (const char *s1, const char *s2, size_t n); |
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483 #endif |
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484 |
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485 #if @GNULIB_MBSPCASECMP@ |
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486 /* Compare the initial segment of the character string STRING consisting of |
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487 at most mbslen (PREFIX) characters with the character string PREFIX, |
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488 ignoring case, returning less than, equal to or greater than zero if this |
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489 initial segment is lexicographically less than, equal to or greater than |
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490 PREFIX. |
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491 Note: This function may, in multibyte locales, return 0 if STRING is of |
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492 smaller length than PREFIX! |
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493 Unlike strncasecmp(), this function works correctly in multibyte |
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494 locales. */ |
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495 extern char * mbspcasecmp (const char *string, const char *prefix); |
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496 #endif |
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497 |
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498 #if @GNULIB_MBSCASESTR@ |
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499 /* Find the first occurrence of the character string NEEDLE in the character |
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500 string HAYSTACK, using case-insensitive comparison. |
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501 Note: This function may, in multibyte locales, return success even if |
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502 strlen (haystack) < strlen (needle) ! |
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503 Unlike strcasestr(), this function works correctly in multibyte locales. */ |
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504 extern char * mbscasestr (const char *haystack, const char *needle); |
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505 #endif |
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506 |
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507 #if @GNULIB_MBSCSPN@ |
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508 /* Find the first occurrence in the character string STRING of any character |
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509 in the character string ACCEPT. Return the number of bytes from the |
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510 beginning of the string to this occurrence, or to the end of the string |
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511 if none exists. |
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512 Unlike strcspn(), this function works correctly in multibyte locales. */ |
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513 extern size_t mbscspn (const char *string, const char *accept); |
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514 #endif |
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515 |
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516 #if @GNULIB_MBSPBRK@ |
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517 /* Find the first occurrence in the character string STRING of any character |
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518 in the character string ACCEPT. Return the pointer to it, or NULL if none |
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519 exists. |
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|
520 Unlike strpbrk(), this function works correctly in multibyte locales. */ |
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|
521 # define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */ |
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|
522 extern char * mbspbrk (const char *string, const char *accept); |
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523 #endif |
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|
524 |
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|
525 #if @GNULIB_MBSSPN@ |
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526 /* Find the first occurrence in the character string STRING of any character |
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527 not in the character string REJECT. Return the number of bytes from the |
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528 beginning of the string to this occurrence, or to the end of the string |
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|
529 if none exists. |
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|
530 Unlike strspn(), this function works correctly in multibyte locales. */ |
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|
531 extern size_t mbsspn (const char *string, const char *reject); |
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|
532 #endif |
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|
533 |
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|
534 #if @GNULIB_MBSSEP@ |
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|
535 /* Search the next delimiter (multibyte character listed in the character |
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|
536 string DELIM) starting at the character string *STRINGP. |
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537 If one is found, overwrite it with a NUL, and advance *STRINGP to point |
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|
538 to the next multibyte character after it. Otherwise, set *STRINGP to NULL. |
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|
539 If *STRINGP was already NULL, nothing happens. |
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|
540 Return the old value of *STRINGP. |
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|
541 |
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|
542 This is a variant of mbstok_r() that supports empty fields. |
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|
543 |
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|
544 Caveat: It modifies the original string. |
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|
545 Caveat: These functions cannot be used on constant strings. |
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|
546 Caveat: The identity of the delimiting character is lost. |
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|
547 |
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|
548 See also mbstok_r(). */ |
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Rename string_.h to string.in.h.
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|
549 extern char * mbssep (char **stringp, const char *delim); |
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|
550 #endif |
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changeset
|
551 |
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Rename string_.h to string.in.h.
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diff
changeset
|
552 #if @GNULIB_MBSTOK_R@ |
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Rename string_.h to string.in.h.
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parents:
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changeset
|
553 /* Parse the character string STRING into tokens separated by characters in |
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Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
554 the character string DELIM. |
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
555 If STRING is NULL, the saved pointer in SAVE_PTR is used as |
a1355710e330
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
556 the next starting point. For example: |
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
557 char s[] = "-abc-=-def"; |
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
558 char *sp; |
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
559 x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def" |
a1355710e330
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
560 x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL |
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Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
561 x = mbstok_r(NULL, "=", &sp); // x = NULL |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
562 // s = "abc\0-def\0" |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
563 |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
564 Caveat: It modifies the original string. |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
565 Caveat: These functions cannot be used on constant strings. |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
566 Caveat: The identity of the delimiting character is lost. |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
567 |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
568 See also mbssep(). */ |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
569 extern char * mbstok_r (char *string, const char *delim, char **save_ptr); |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
570 #endif |
a1355710e330
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
571 |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
572 /* Map any int, typically from errno, into an error message. */ |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
573 #if @GNULIB_STRERROR@ |
a1355710e330
Rename string_.h to string.in.h.
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parents:
diff
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|
574 # if @REPLACE_STRERROR@ |
a1355710e330
Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
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diff
changeset
|
575 # undef strerror |
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Bruno Haible <bruno@clisp.org>
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diff
changeset
|
576 # define strerror rpl_strerror |
a1355710e330
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parents:
diff
changeset
|
577 extern char *strerror (int); |
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Bruno Haible <bruno@clisp.org>
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diff
changeset
|
578 # endif |
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
579 #elif defined GNULIB_POSIXCHECK |
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parents:
diff
changeset
|
580 # undef strerror |
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parents:
diff
changeset
|
581 # define strerror(e) \ |
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Rename string_.h to string.in.h.
Bruno Haible <bruno@clisp.org>
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diff
changeset
|
582 (GL_LINK_WARNING ("strerror is unportable - " \ |
a1355710e330
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diff
changeset
|
583 "use gnulib module strerror to guarantee non-NULL result"), \ |
a1355710e330
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Bruno Haible <bruno@clisp.org>
parents:
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changeset
|
584 strerror (e)) |
a1355710e330
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
585 #endif |
a1355710e330
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Bruno Haible <bruno@clisp.org>
parents:
diff
changeset
|
586 |
9616
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
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9613
diff
changeset
|
587 #if @GNULIB_STRSIGNAL@ |
9622
7b32838d1079
Replace strsignal if it does not work fine.
Bruno Haible <bruno@clisp.org>
parents:
9616
diff
changeset
|
588 # if @REPLACE_STRSIGNAL@ |
7b32838d1079
Replace strsignal if it does not work fine.
Bruno Haible <bruno@clisp.org>
parents:
9616
diff
changeset
|
589 # define strsignal rpl_strsignal |
7b32838d1079
Replace strsignal if it does not work fine.
Bruno Haible <bruno@clisp.org>
parents:
9616
diff
changeset
|
590 # endif |
7b32838d1079
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Bruno Haible <bruno@clisp.org>
parents:
9616
diff
changeset
|
591 # if ! @HAVE_DECL_STRSIGNAL@ || @REPLACE_STRSIGNAL@ |
9616
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
592 extern char *strsignal (int __sig); |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
593 # endif |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
594 #elif defined GNULIB_POSIXCHECK |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
595 # undef strsignal |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
596 # define strsignal(a) \ |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
597 (GL_LINK_WARNING ("strsignal is unportable - " \ |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
598 "use gnulib module strsignal for portability"), \ |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
599 strsignal (a)) |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
600 #endif |
878f41b0e41e
New module 'strsignal'.
Colin Watson <cjwatson@debian.org>
parents:
9613
diff
changeset
|
601 |
10345
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
602 #if @GNULIB_STRVERSCMP@ |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
603 # if !@HAVE_STRVERSCMP@ |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
604 extern int strverscmp (const char *, const char *); |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
605 # endif |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
606 #elif defined GNULIB_POSIXCHECK |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
607 # undef strverscmp |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
608 # define strverscmp(a, b) \ |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
609 (GL_LINK_WARNING ("strverscmp is unportable - " \ |
8d80c477e0ad
strverscmp: migrate from "strverscmp.h" to <string.h>
Eric Blake <ebb9@byu.net>
parents:
9999
diff
changeset
|
610 "use gnulib module strverscmp for portability"), \ |
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strverscmp: migrate from "strverscmp.h" to <string.h>
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611 strverscmp (a, b)) |
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strverscmp: migrate from "strverscmp.h" to <string.h>
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612 #endif |
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strverscmp: migrate from "strverscmp.h" to <string.h>
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613 |
9264
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Rename string_.h to string.in.h.
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614 |
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Rename string_.h to string.in.h.
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615 #ifdef __cplusplus |
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Rename string_.h to string.in.h.
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616 } |
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Rename string_.h to string.in.h.
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617 #endif |
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Rename string_.h to string.in.h.
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618 |
a1355710e330
Rename string_.h to string.in.h.
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619 #endif /* _GL_STRING_H */ |
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Rename string_.h to string.in.h.
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620 #endif /* _GL_STRING_H */ |