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398
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1 /* A GNU-like <string.h>.
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2
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3 Copyright (C) 1995-1996, 2001-2010 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 3, 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 /* NetBSD 5.0 mis-defines NULL. */
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32 #include <stddef.h>
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33
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34 /* MirBSD defines mbslen as a macro. */
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35 #if @GNULIB_MBSLEN@ && defined __MirBSD__
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36 # include <wchar.h>
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37 #endif
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38
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39 #ifndef __attribute__
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40 /* This feature is available in gcc versions 2.5 and later. */
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41 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
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42 # define __attribute__(Spec) /* empty */
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43 # endif
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44 /* The attribute __pure__ was added in gcc 2.96. */
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45 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
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46 # define __pure__ /* empty */
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47 # endif
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48 #endif
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49
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50
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51 /* The definition of GL_LINK_WARNING is copied here. */
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52
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53 /* The definition of _GL_ARG_NONNULL is copied here. */
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54
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55
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56 #ifdef __cplusplus
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57 extern "C" {
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58 #endif
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59
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60
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61 /* Return the first instance of C within N bytes of S, or NULL. */
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62 #if @GNULIB_MEMCHR@
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63 # if @REPLACE_MEMCHR@
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64 # define memchr rpl_memchr
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65 extern void *memchr (void const *__s, int __c, size_t __n)
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66 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
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67 # endif
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68 #elif defined GNULIB_POSIXCHECK
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69 # undef memchr
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70 # define memchr(s,c,n) \
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71 (GL_LINK_WARNING ("memchr has platform-specific bugs - " \
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72 "use gnulib module memchr for portability" ), \
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73 memchr (s, c, n))
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74 #endif
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75
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76 /* Return the first occurrence of NEEDLE in HAYSTACK. */
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77 #if @GNULIB_MEMMEM@
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78 # if @REPLACE_MEMMEM@
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79 # define memmem rpl_memmem
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80 # endif
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81 # if ! @HAVE_DECL_MEMMEM@ || @REPLACE_MEMMEM@
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82 extern void *memmem (void const *__haystack, size_t __haystack_len,
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83 void const *__needle, size_t __needle_len)
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84 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 3));
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85 # endif
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86 #elif defined GNULIB_POSIXCHECK
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87 # undef memmem
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88 # define memmem(a,al,b,bl) \
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89 (GL_LINK_WARNING ("memmem is unportable and often quadratic - " \
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90 "use gnulib module memmem-simple for portability, " \
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91 "and module memmem for speed" ), \
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92 memmem (a, al, b, bl))
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93 #endif
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94
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95 /* Copy N bytes of SRC to DEST, return pointer to bytes after the
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96 last written byte. */
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97 #if @GNULIB_MEMPCPY@
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98 # if ! @HAVE_MEMPCPY@
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99 extern void *mempcpy (void *restrict __dest, void const *restrict __src,
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100 size_t __n)
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101 _GL_ARG_NONNULL ((1, 2));
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102 # endif
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103 #elif defined GNULIB_POSIXCHECK
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104 # undef mempcpy
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105 # define mempcpy(a,b,n) \
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106 (GL_LINK_WARNING ("mempcpy is unportable - " \
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107 "use gnulib module mempcpy for portability"), \
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108 mempcpy (a, b, n))
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109 #endif
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110
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111 /* Search backwards through a block for a byte (specified as an int). */
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112 #if @GNULIB_MEMRCHR@
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113 # if ! @HAVE_DECL_MEMRCHR@
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114 extern void *memrchr (void const *, int, size_t)
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115 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
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116 # endif
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117 #elif defined GNULIB_POSIXCHECK
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118 # undef memrchr
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119 # define memrchr(a,b,c) \
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120 (GL_LINK_WARNING ("memrchr is unportable - " \
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121 "use gnulib module memrchr for portability"), \
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122 memrchr (a, b, c))
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123 #endif
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124
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125 /* Find the first occurrence of C in S. More efficient than
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126 memchr(S,C,N), at the expense of undefined behavior if C does not
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127 occur within N bytes. */
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128 #if @GNULIB_RAWMEMCHR@
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129 # if ! @HAVE_RAWMEMCHR@
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130 extern void *rawmemchr (void const *__s, int __c_in)
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131 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
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132 # endif
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133 #elif defined GNULIB_POSIXCHECK
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134 # undef rawmemchr
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135 # define rawmemchr(a,b) \
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136 (GL_LINK_WARNING ("rawmemchr is unportable - " \
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137 "use gnulib module rawmemchr for portability"), \
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138 rawmemchr (a, b))
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139 #endif
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140
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141 /* Copy SRC to DST, returning the address of the terminating '\0' in DST. */
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142 #if @GNULIB_STPCPY@
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143 # if ! @HAVE_STPCPY@
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144 extern char *stpcpy (char *restrict __dst, char const *restrict __src)
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145 _GL_ARG_NONNULL ((1, 2));
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146 # endif
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147 #elif defined GNULIB_POSIXCHECK
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148 # undef stpcpy
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149 # define stpcpy(a,b) \
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150 (GL_LINK_WARNING ("stpcpy is unportable - " \
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151 "use gnulib module stpcpy for portability"), \
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152 stpcpy (a, b))
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153 #endif
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154
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155 /* Copy no more than N bytes of SRC to DST, returning a pointer past the
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156 last non-NUL byte written into DST. */
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157 #if @GNULIB_STPNCPY@
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158 # if ! @HAVE_STPNCPY@
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159 # define stpncpy gnu_stpncpy
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160 extern char *stpncpy (char *restrict __dst, char const *restrict __src,
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161 size_t __n)
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162 _GL_ARG_NONNULL ((1, 2));
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163 # endif
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164 #elif defined GNULIB_POSIXCHECK
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165 # undef stpncpy
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166 # define stpncpy(a,b,n) \
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167 (GL_LINK_WARNING ("stpncpy is unportable - " \
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168 "use gnulib module stpncpy for portability"), \
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169 stpncpy (a, b, n))
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170 #endif
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171
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172 #if defined GNULIB_POSIXCHECK
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173 /* strchr() does not work with multibyte strings if the locale encoding is
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174 GB18030 and the character to be searched is a digit. */
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175 # undef strchr
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176 # define strchr(s,c) \
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177 (GL_LINK_WARNING ("strchr cannot work correctly on character strings " \
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178 "in some multibyte locales - " \
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179 "use mbschr if you care about internationalization"), \
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180 strchr (s, c))
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181 #endif
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182
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183 /* Find the first occurrence of C in S or the final NUL byte. */
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184 #if @GNULIB_STRCHRNUL@
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185 # if ! @HAVE_STRCHRNUL@
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186 extern char *strchrnul (char const *__s, int __c_in)
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187 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
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188 # endif
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189 #elif defined GNULIB_POSIXCHECK
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190 # undef strchrnul
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191 # define strchrnul(a,b) \
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192 (GL_LINK_WARNING ("strchrnul is unportable - " \
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193 "use gnulib module strchrnul for portability"), \
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194 strchrnul (a, b))
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195 #endif
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196
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197 /* Duplicate S, returning an identical malloc'd string. */
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198 #if @GNULIB_STRDUP@
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199 # if @REPLACE_STRDUP@
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200 # undef strdup
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201 # define strdup rpl_strdup
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202 # endif
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203 # if !(@HAVE_DECL_STRDUP@ || defined strdup) || @REPLACE_STRDUP@
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204 extern char *strdup (char const *__s) _GL_ARG_NONNULL ((1));
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205 # endif
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206 #elif defined GNULIB_POSIXCHECK
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207 # undef strdup
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208 # define strdup(a) \
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209 (GL_LINK_WARNING ("strdup is unportable - " \
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210 "use gnulib module strdup for portability"), \
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211 strdup (a))
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212 #endif
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213
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214 /* Return a newly allocated copy of at most N bytes of STRING. */
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215 #if @GNULIB_STRNDUP@
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216 # if @REPLACE_STRNDUP@
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217 # undef strndup
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218 # define strndup rpl_strndup
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219 # endif
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220 # if @REPLACE_STRNDUP@ || ! @HAVE_DECL_STRNDUP@
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221 extern char *strndup (char const *__string, size_t __n) _GL_ARG_NONNULL ((1));
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222 # endif
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223 #elif defined GNULIB_POSIXCHECK
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224 # undef strndup
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225 # define strndup(a,n) \
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226 (GL_LINK_WARNING ("strndup is unportable - " \
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227 "use gnulib module strndup for portability"), \
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228 strndup (a, n))
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229 #endif
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230
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231 /* Find the length (number of bytes) of STRING, but scan at most
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232 MAXLEN bytes. If no '\0' terminator is found in that many bytes,
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233 return MAXLEN. */
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234 #if @GNULIB_STRNLEN@
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235 # if ! @HAVE_DECL_STRNLEN@
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236 extern size_t strnlen (char const *__string, size_t __maxlen)
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237 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
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238 # endif
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239 #elif defined GNULIB_POSIXCHECK
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240 # undef strnlen
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241 # define strnlen(a,n) \
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242 (GL_LINK_WARNING ("strnlen is unportable - " \
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243 "use gnulib module strnlen for portability"), \
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244 strnlen (a, n))
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245 #endif
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246
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247 #if defined GNULIB_POSIXCHECK
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248 /* strcspn() assumes the second argument is a list of single-byte characters.
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249 Even in this simple case, it does not work with multibyte strings if the
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250 locale encoding is GB18030 and one of the characters to be searched is a
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251 digit. */
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252 # undef strcspn
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253 # define strcspn(s,a) \
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254 (GL_LINK_WARNING ("strcspn cannot work correctly on character strings " \
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255 "in multibyte locales - " \
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256 "use mbscspn if you care about internationalization"), \
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257 strcspn (s, a))
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258 #endif
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259
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260 /* Find the first occurrence in S of any character in ACCEPT. */
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261 #if @GNULIB_STRPBRK@
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262 # if ! @HAVE_STRPBRK@
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263 extern char *strpbrk (char const *__s, char const *__accept)
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264 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2));
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265 # endif
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266 # if defined GNULIB_POSIXCHECK
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267 /* strpbrk() assumes the second argument is a list of single-byte characters.
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268 Even in this simple case, it does not work with multibyte strings if the
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269 locale encoding is GB18030 and one of the characters to be searched is a
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270 digit. */
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271 # undef strpbrk
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272 # define strpbrk(s,a) \
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273 (GL_LINK_WARNING ("strpbrk cannot work correctly on character strings " \
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274 "in multibyte locales - " \
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275 "use mbspbrk if you care about internationalization"), \
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276 strpbrk (s, a))
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277 # endif
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278 #elif defined GNULIB_POSIXCHECK
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279 # undef strpbrk
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280 # define strpbrk(s,a) \
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281 (GL_LINK_WARNING ("strpbrk is unportable - " \
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282 "use gnulib module strpbrk for portability"), \
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283 strpbrk (s, a))
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284 #endif
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285
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286 #if defined GNULIB_POSIXCHECK
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287 /* strspn() assumes the second argument is a list of single-byte characters.
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288 Even in this simple case, it cannot work with multibyte strings. */
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289 # undef strspn
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290 # define strspn(s,a) \
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291 (GL_LINK_WARNING ("strspn cannot work correctly on character strings " \
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292 "in multibyte locales - " \
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293 "use mbsspn if you care about internationalization"), \
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294 strspn (s, a))
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295 #endif
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296
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297 #if defined GNULIB_POSIXCHECK
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298 /* strrchr() does not work with multibyte strings if the locale encoding is
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299 GB18030 and the character to be searched is a digit. */
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300 # undef strrchr
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301 # define strrchr(s,c) \
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302 (GL_LINK_WARNING ("strrchr cannot work correctly on character strings " \
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303 "in some multibyte locales - " \
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304 "use mbsrchr if you care about internationalization"), \
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305 strrchr (s, c))
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306 #endif
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307
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308 /* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
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309 If one is found, overwrite it with a NUL, and advance *STRINGP
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310 to point to the next char after it. Otherwise, set *STRINGP to NULL.
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311 If *STRINGP was already NULL, nothing happens.
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312 Return the old value of *STRINGP.
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313
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314 This is a variant of strtok() that is multithread-safe and supports
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315 empty fields.
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316
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317 Caveat: It modifies the original string.
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318 Caveat: These functions cannot be used on constant strings.
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319 Caveat: The identity of the delimiting character is lost.
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320 Caveat: It doesn't work with multibyte strings unless all of the delimiter
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321 characters are ASCII characters < 0x30.
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322
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323 See also strtok_r(). */
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324 #if @GNULIB_STRSEP@
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325 # if ! @HAVE_STRSEP@
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326 extern char *strsep (char **restrict __stringp, char const *restrict __delim)
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327 _GL_ARG_NONNULL ((1, 2));
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328 # endif
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329 # if defined GNULIB_POSIXCHECK
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330 # undef strsep
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331 # define strsep(s,d) \
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332 (GL_LINK_WARNING ("strsep cannot work correctly on character strings " \
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333 "in multibyte locales - " \
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334 "use mbssep if you care about internationalization"), \
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335 strsep (s, d))
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336 # endif
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337 #elif defined GNULIB_POSIXCHECK
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338 # undef strsep
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339 # define strsep(s,d) \
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340 (GL_LINK_WARNING ("strsep is unportable - " \
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341 "use gnulib module strsep for portability"), \
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342 strsep (s, d))
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343 #endif
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344
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345 #if @GNULIB_STRSTR@
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346 # if @REPLACE_STRSTR@
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347 # define strstr rpl_strstr
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348 extern char *strstr (const char *haystack, const char *needle)
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349 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2));
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350 # endif
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351 #elif defined GNULIB_POSIXCHECK
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352 /* strstr() does not work with multibyte strings if the locale encoding is
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353 different from UTF-8:
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354 POSIX says that it operates on "strings", and "string" in POSIX is defined
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355 as a sequence of bytes, not of characters. */
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356 # undef strstr
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357 # define strstr(a,b) \
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358 (GL_LINK_WARNING ("strstr is quadratic on many systems, and cannot " \
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359 "work correctly on character strings in most " \
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360 "multibyte locales - " \
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361 "use mbsstr if you care about internationalization, " \
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362 "or use strstr if you care about speed"), \
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363 strstr (a, b))
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364 #endif
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365
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366 /* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
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367 comparison. */
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368 #if @GNULIB_STRCASESTR@
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369 # if @REPLACE_STRCASESTR@
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370 # define strcasestr rpl_strcasestr
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371 # endif
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372 # if ! @HAVE_STRCASESTR@ || @REPLACE_STRCASESTR@
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373 extern char *strcasestr (const char *haystack, const char *needle)
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374 __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2));
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375 # endif
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376 #elif defined GNULIB_POSIXCHECK
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377 /* strcasestr() does not work with multibyte strings:
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378 It is a glibc extension, and glibc implements it only for unibyte
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379 locales. */
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380 # undef strcasestr
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381 # define strcasestr(a,b) \
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382 (GL_LINK_WARNING ("strcasestr does work correctly on character strings " \
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383 "in multibyte locales - " \
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384 "use mbscasestr if you care about " \
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385 "internationalization, or use c-strcasestr if you want " \
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386 "a locale independent function"), \
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387 strcasestr (a, b))
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388 #endif
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389
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390 /* Parse S into tokens separated by characters in DELIM.
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391 If S is NULL, the saved pointer in SAVE_PTR is used as
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392 the next starting point. For example:
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393 char s[] = "-abc-=-def";
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394 char *sp;
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395 x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
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396 x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
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397 x = strtok_r(NULL, "=", &sp); // x = NULL
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398 // s = "abc\0-def\0"
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399
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400 This is a variant of strtok() that is multithread-safe.
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401
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402 For the POSIX documentation for this function, see:
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403 http://www.opengroup.org/susv3xsh/strtok.html
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404
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405 Caveat: It modifies the original string.
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406 Caveat: These functions cannot be used on constant strings.
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407 Caveat: The identity of the delimiting character is lost.
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408 Caveat: It doesn't work with multibyte strings unless all of the delimiter
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409 characters are ASCII characters < 0x30.
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410
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411 See also strsep(). */
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412 #if @GNULIB_STRTOK_R@
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413 # if @REPLACE_STRTOK_R@
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414 # undef strtok_r
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415 # define strtok_r rpl_strtok_r
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416 # elif @UNDEFINE_STRTOK_R@
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417 # undef strtok_r
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418 # endif
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419 # if ! @HAVE_DECL_STRTOK_R@ || @REPLACE_STRTOK_R@
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420 extern char *strtok_r (char *restrict s, char const *restrict delim,
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421 char **restrict save_ptr)
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422 _GL_ARG_NONNULL ((2, 3));
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423 # endif
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424 # if defined GNULIB_POSIXCHECK
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425 # undef strtok_r
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426 # define strtok_r(s,d,p) \
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427 (GL_LINK_WARNING ("strtok_r cannot work correctly on character strings " \
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428 "in multibyte locales - " \
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429 "use mbstok_r if you care about internationalization"), \
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430 strtok_r (s, d, p))
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431 # endif
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432 #elif defined GNULIB_POSIXCHECK
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433 # undef strtok_r
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434 # define strtok_r(s,d,p) \
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435 (GL_LINK_WARNING ("strtok_r is unportable - " \
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436 "use gnulib module strtok_r for portability"), \
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437 strtok_r (s, d, p))
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438 #endif
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439
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440
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441 /* The following functions are not specified by POSIX. They are gnulib
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442 extensions. */
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443
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444 #if @GNULIB_MBSLEN@
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445 /* Return the number of multibyte characters in the character string STRING.
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446 This considers multibyte characters, unlike strlen, which counts bytes. */
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447 # ifdef __MirBSD__ /* MirBSD defines mbslen as a macro. Override it. */
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448 # undef mbslen
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449 # endif
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450 # if @HAVE_MBSLEN@ /* AIX, OSF/1, MirBSD define mbslen already in libc. */
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451 # define mbslen rpl_mbslen
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452 # endif
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453 extern size_t mbslen (const char *string) _GL_ARG_NONNULL ((1));
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454 #endif
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455
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456 #if @GNULIB_MBSNLEN@
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457 /* Return the number of multibyte characters in the character string starting
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458 at STRING and ending at STRING + LEN. */
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459 extern size_t mbsnlen (const char *string, size_t len) _GL_ARG_NONNULL ((1));
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460 #endif
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461
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462 #if @GNULIB_MBSCHR@
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463 /* Locate the first single-byte character C in the character string STRING,
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464 and return a pointer to it. Return NULL if C is not found in STRING.
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465 Unlike strchr(), this function works correctly in multibyte locales with
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466 encodings such as GB18030. */
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467 # define mbschr rpl_mbschr /* avoid collision with HP-UX function */
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468 extern char * mbschr (const char *string, int c) _GL_ARG_NONNULL ((1));
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469 #endif
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470
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471 #if @GNULIB_MBSRCHR@
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472 /* Locate the last single-byte character C in the character string STRING,
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473 and return a pointer to it. Return NULL if C is not found in STRING.
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|
|
474 Unlike strrchr(), this function works correctly in multibyte locales with
|
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|
475 encodings such as GB18030. */
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|
476 # define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
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|
|
477 extern char * mbsrchr (const char *string, int c) _GL_ARG_NONNULL ((1));
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|
|
478 #endif
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|
|
479
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|
|
480 #if @GNULIB_MBSSTR@
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|
481 /* Find the first occurrence of the character string NEEDLE in the character
|
|
|
482 string HAYSTACK. Return NULL if NEEDLE is not found in HAYSTACK.
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|
|
483 Unlike strstr(), this function works correctly in multibyte locales with
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|
|
484 encodings different from UTF-8. */
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|
|
485 extern char * mbsstr (const char *haystack, const char *needle)
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|
|
486 _GL_ARG_NONNULL ((1, 2));
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|
|
487 #endif
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|
|
488
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|
|
489 #if @GNULIB_MBSCASECMP@
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490 /* Compare the character strings S1 and S2, ignoring case, returning less than,
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|
|
491 equal to or greater than zero if S1 is lexicographically less than, equal to
|
|
|
492 or greater than S2.
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|
|
493 Note: This function may, in multibyte locales, return 0 for strings of
|
|
|
494 different lengths!
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|
|
495 Unlike strcasecmp(), this function works correctly in multibyte locales. */
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|
|
496 extern int mbscasecmp (const char *s1, const char *s2)
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|
|
497 _GL_ARG_NONNULL ((1, 2));
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|
|
498 #endif
|
|
|
499
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|
|
500 #if @GNULIB_MBSNCASECMP@
|
|
|
501 /* Compare the initial segment of the character string S1 consisting of at most
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|
502 N characters with the initial segment of the character string S2 consisting
|
|
|
503 of at most N characters, ignoring case, returning less than, equal to or
|
|
|
504 greater than zero if the initial segment of S1 is lexicographically less
|
|
|
505 than, equal to or greater than the initial segment of S2.
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|
|
506 Note: This function may, in multibyte locales, return 0 for initial segments
|
|
|
507 of different lengths!
|
|
|
508 Unlike strncasecmp(), this function works correctly in multibyte locales.
|
|
|
509 But beware that N is not a byte count but a character count! */
|
|
|
510 extern int mbsncasecmp (const char *s1, const char *s2, size_t n)
|
|
|
511 _GL_ARG_NONNULL ((1, 2));
|
|
|
512 #endif
|
|
|
513
|
|
|
514 #if @GNULIB_MBSPCASECMP@
|
|
|
515 /* Compare the initial segment of the character string STRING consisting of
|
|
|
516 at most mbslen (PREFIX) characters with the character string PREFIX,
|
|
|
517 ignoring case, returning less than, equal to or greater than zero if this
|
|
|
518 initial segment is lexicographically less than, equal to or greater than
|
|
|
519 PREFIX.
|
|
|
520 Note: This function may, in multibyte locales, return 0 if STRING is of
|
|
|
521 smaller length than PREFIX!
|
|
|
522 Unlike strncasecmp(), this function works correctly in multibyte
|
|
|
523 locales. */
|
|
|
524 extern char * mbspcasecmp (const char *string, const char *prefix)
|
|
|
525 _GL_ARG_NONNULL ((1, 2));
|
|
|
526 #endif
|
|
|
527
|
|
|
528 #if @GNULIB_MBSCASESTR@
|
|
|
529 /* Find the first occurrence of the character string NEEDLE in the character
|
|
|
530 string HAYSTACK, using case-insensitive comparison.
|
|
|
531 Note: This function may, in multibyte locales, return success even if
|
|
|
532 strlen (haystack) < strlen (needle) !
|
|
|
533 Unlike strcasestr(), this function works correctly in multibyte locales. */
|
|
|
534 extern char * mbscasestr (const char *haystack, const char *needle)
|
|
|
535 _GL_ARG_NONNULL ((1, 2));
|
|
|
536 #endif
|
|
|
537
|
|
|
538 #if @GNULIB_MBSCSPN@
|
|
|
539 /* Find the first occurrence in the character string STRING of any character
|
|
|
540 in the character string ACCEPT. Return the number of bytes from the
|
|
|
541 beginning of the string to this occurrence, or to the end of the string
|
|
|
542 if none exists.
|
|
|
543 Unlike strcspn(), this function works correctly in multibyte locales. */
|
|
|
544 extern size_t mbscspn (const char *string, const char *accept)
|
|
|
545 _GL_ARG_NONNULL ((1, 2));
|
|
|
546 #endif
|
|
|
547
|
|
|
548 #if @GNULIB_MBSPBRK@
|
|
|
549 /* Find the first occurrence in the character string STRING of any character
|
|
|
550 in the character string ACCEPT. Return the pointer to it, or NULL if none
|
|
|
551 exists.
|
|
|
552 Unlike strpbrk(), this function works correctly in multibyte locales. */
|
|
|
553 # define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
|
|
|
554 extern char * mbspbrk (const char *string, const char *accept)
|
|
|
555 _GL_ARG_NONNULL ((1, 2));
|
|
|
556 #endif
|
|
|
557
|
|
|
558 #if @GNULIB_MBSSPN@
|
|
|
559 /* Find the first occurrence in the character string STRING of any character
|
|
|
560 not in the character string REJECT. Return the number of bytes from the
|
|
|
561 beginning of the string to this occurrence, or to the end of the string
|
|
|
562 if none exists.
|
|
|
563 Unlike strspn(), this function works correctly in multibyte locales. */
|
|
|
564 extern size_t mbsspn (const char *string, const char *reject)
|
|
|
565 _GL_ARG_NONNULL ((1, 2));
|
|
|
566 #endif
|
|
|
567
|
|
|
568 #if @GNULIB_MBSSEP@
|
|
|
569 /* Search the next delimiter (multibyte character listed in the character
|
|
|
570 string DELIM) starting at the character string *STRINGP.
|
|
|
571 If one is found, overwrite it with a NUL, and advance *STRINGP to point
|
|
|
572 to the next multibyte character after it. Otherwise, set *STRINGP to NULL.
|
|
|
573 If *STRINGP was already NULL, nothing happens.
|
|
|
574 Return the old value of *STRINGP.
|
|
|
575
|
|
|
576 This is a variant of mbstok_r() that supports empty fields.
|
|
|
577
|
|
|
578 Caveat: It modifies the original string.
|
|
|
579 Caveat: These functions cannot be used on constant strings.
|
|
|
580 Caveat: The identity of the delimiting character is lost.
|
|
|
581
|
|
|
582 See also mbstok_r(). */
|
|
|
583 extern char * mbssep (char **stringp, const char *delim)
|
|
|
584 _GL_ARG_NONNULL ((1, 2));
|
|
|
585 #endif
|
|
|
586
|
|
|
587 #if @GNULIB_MBSTOK_R@
|
|
|
588 /* Parse the character string STRING into tokens separated by characters in
|
|
|
589 the character string DELIM.
|
|
|
590 If STRING is NULL, the saved pointer in SAVE_PTR is used as
|
|
|
591 the next starting point. For example:
|
|
|
592 char s[] = "-abc-=-def";
|
|
|
593 char *sp;
|
|
|
594 x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def"
|
|
|
595 x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL
|
|
|
596 x = mbstok_r(NULL, "=", &sp); // x = NULL
|
|
|
597 // s = "abc\0-def\0"
|
|
|
598
|
|
|
599 Caveat: It modifies the original string.
|
|
|
600 Caveat: These functions cannot be used on constant strings.
|
|
|
601 Caveat: The identity of the delimiting character is lost.
|
|
|
602
|
|
|
603 See also mbssep(). */
|
|
|
604 extern char * mbstok_r (char *string, const char *delim, char **save_ptr)
|
|
|
605 _GL_ARG_NONNULL ((2, 3));
|
|
|
606 #endif
|
|
|
607
|
|
|
608 /* Map any int, typically from errno, into an error message. */
|
|
|
609 #if @GNULIB_STRERROR@
|
|
|
610 # if @REPLACE_STRERROR@
|
|
|
611 # undef strerror
|
|
|
612 # define strerror rpl_strerror
|
|
|
613 extern char *strerror (int);
|
|
|
614 # endif
|
|
|
615 #elif defined GNULIB_POSIXCHECK
|
|
|
616 # undef strerror
|
|
|
617 # define strerror(e) \
|
|
|
618 (GL_LINK_WARNING ("strerror is unportable - " \
|
|
|
619 "use gnulib module strerror to guarantee non-NULL result"), \
|
|
|
620 strerror (e))
|
|
|
621 #endif
|
|
|
622
|
|
|
623 #if @GNULIB_STRSIGNAL@
|
|
|
624 # if @REPLACE_STRSIGNAL@
|
|
|
625 # define strsignal rpl_strsignal
|
|
|
626 # endif
|
|
|
627 # if ! @HAVE_DECL_STRSIGNAL@ || @REPLACE_STRSIGNAL@
|
|
|
628 extern char *strsignal (int __sig);
|
|
|
629 # endif
|
|
|
630 #elif defined GNULIB_POSIXCHECK
|
|
|
631 # undef strsignal
|
|
|
632 # define strsignal(a) \
|
|
|
633 (GL_LINK_WARNING ("strsignal is unportable - " \
|
|
|
634 "use gnulib module strsignal for portability"), \
|
|
|
635 strsignal (a))
|
|
|
636 #endif
|
|
|
637
|
|
|
638 #if @GNULIB_STRVERSCMP@
|
|
|
639 # if !@HAVE_STRVERSCMP@
|
|
|
640 extern int strverscmp (const char *, const char *) _GL_ARG_NONNULL ((1, 2));
|
|
|
641 # endif
|
|
|
642 #elif defined GNULIB_POSIXCHECK
|
|
|
643 # undef strverscmp
|
|
|
644 # define strverscmp(a, b) \
|
|
|
645 (GL_LINK_WARNING ("strverscmp is unportable - " \
|
|
|
646 "use gnulib module strverscmp for portability"), \
|
|
|
647 strverscmp (a, b))
|
|
|
648 #endif
|
|
|
649
|
|
|
650
|
|
|
651 #ifdef __cplusplus
|
|
|
652 }
|
|
|
653 #endif
|
|
|
654
|
|
|
655 #endif /* _GL_STRING_H */
|
|
|
656 #endif /* _GL_STRING_H */
|
