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272
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1 /* Convenience header for conditional use of GNU <libintl.h>.
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2 Copyright (C) 1995-1998, 2000-2002, 2004-2006 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License along
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15 with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 #ifndef _LIBGETTEXT_H
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19 #define _LIBGETTEXT_H 1
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20
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21 /* NLS can be disabled through the configure --disable-nls option. */
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22 #if ENABLE_NLS
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23
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24 /* Get declarations of GNU message catalog functions. */
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25 # include <libintl.h>
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26
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27 /* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
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28 the gettext() and ngettext() macros. This is an alternative to calling
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29 textdomain(), and is useful for libraries. */
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30 # ifdef DEFAULT_TEXT_DOMAIN
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31 # undef gettext
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32 # define gettext(Msgid) \
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33 dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
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34 # undef ngettext
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35 # define ngettext(Msgid1, Msgid2, N) \
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36 dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
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37 # endif
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38
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39 #else
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40
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41 /* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
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42 chokes if dcgettext is defined as a macro. So include it now, to make
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43 later inclusions of <locale.h> a NOP. We don't include <libintl.h>
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44 as well because people using "gettext.h" will not include <libintl.h>,
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45 and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
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46 is OK. */
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47 #if defined(__sun)
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48 # include <locale.h>
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49 #endif
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50
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51 /* Many header files from the libstdc++ coming with g++ 3.3 or newer include
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52 <libintl.h>, which chokes if dcgettext is defined as a macro. So include
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53 it now, to make later inclusions of <libintl.h> a NOP. */
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54 #if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
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55 # include <cstdlib>
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56 # if (__GLIBC__ >= 2) || _GLIBCXX_HAVE_LIBINTL_H
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57 # include <libintl.h>
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58 # endif
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59 #endif
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60
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61 /* Disabled NLS.
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62 The casts to 'const char *' serve the purpose of producing warnings
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63 for invalid uses of the value returned from these functions.
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64 On pre-ANSI systems without 'const', the config.h file is supposed to
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65 contain "#define const". */
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66 # define gettext(Msgid) ((const char *) (Msgid))
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67 # define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
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68 # define dcgettext(Domainname, Msgid, Category) \
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69 ((void) (Category), dgettext (Domainname, Msgid))
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70 # define ngettext(Msgid1, Msgid2, N) \
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71 ((N) == 1 \
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72 ? ((void) (Msgid2), (const char *) (Msgid1)) \
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73 : ((void) (Msgid1), (const char *) (Msgid2)))
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74 # define dngettext(Domainname, Msgid1, Msgid2, N) \
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75 ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
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76 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
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77 ((void) (Category), dngettext(Domainname, Msgid1, Msgid2, N))
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78 # define textdomain(Domainname) ((const char *) (Domainname))
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79 # define bindtextdomain(Domainname, Dirname) \
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80 ((void) (Domainname), (const char *) (Dirname))
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81 # define bind_textdomain_codeset(Domainname, Codeset) \
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82 ((void) (Domainname), (const char *) (Codeset))
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83
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84 #endif
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85
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86 /* A pseudo function call that serves as a marker for the automated
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87 extraction of messages, but does not call gettext(). The run-time
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88 translation is done at a different place in the code.
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89 The argument, String, should be a literal string. Concatenated strings
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90 and other string expressions won't work.
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91 The macro's expansion is not parenthesized, so that it is suitable as
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92 initializer for static 'char[]' or 'const char[]' variables. */
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93 #define gettext_noop(String) String
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94
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95 /* The separator between msgctxt and msgid in a .mo file. */
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96 #define GETTEXT_CONTEXT_GLUE "\004"
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97
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98 /* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
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99 MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be
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100 short and rarely need to change.
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101 The letter 'p' stands for 'particular' or 'special'. */
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102 #ifdef DEFAULT_TEXT_DOMAIN
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103 # define pgettext(Msgctxt, Msgid) \
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104 pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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105 #else
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106 # define pgettext(Msgctxt, Msgid) \
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107 pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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108 #endif
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109 #define dpgettext(Domainname, Msgctxt, Msgid) \
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110 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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111 #define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
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112 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
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113 #ifdef DEFAULT_TEXT_DOMAIN
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114 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
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115 npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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116 #else
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117 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
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118 npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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119 #endif
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120 #define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
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121 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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122 #define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
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123 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
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124
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125 #ifdef __GNUC__
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126 __inline
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127 #else
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128 #ifdef __cplusplus
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129 inline
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130 #endif
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131 #endif
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132 static const char *
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133 pgettext_aux (const char *domain,
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134 const char *msg_ctxt_id, const char *msgid,
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135 int category)
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136 {
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137 const char *translation = dcgettext (domain, msg_ctxt_id, category);
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138 if (translation == msg_ctxt_id)
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139 return msgid;
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140 else
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141 return translation;
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142 }
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143
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144 #ifdef __GNUC__
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145 __inline
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146 #else
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147 #ifdef __cplusplus
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148 inline
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149 #endif
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150 #endif
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151 static const char *
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152 npgettext_aux (const char *domain,
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153 const char *msg_ctxt_id, const char *msgid,
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154 const char *msgid_plural, unsigned long int n,
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155 int category)
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156 {
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157 const char *translation =
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158 dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
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159 if (translation == msg_ctxt_id || translation == msgid_plural)
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160 return (n == 1 ? msgid : msgid_plural);
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161 else
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162 return translation;
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163 }
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164
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165 /* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID
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166 can be arbitrary expressions. But for string literals these macros are
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167 less efficient than those above. */
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168
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169 #include <string.h>
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170
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171 #define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS \
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172 (((__GNUC__ >= 3 || __GNUG__ >= 2) && !__STRICT_ANSI__) \
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173 /* || __STDC_VERSION__ >= 199901L */ )
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174
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175 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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176 #include <stdlib.h>
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177 #endif
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178
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179 #define pgettext_expr(Msgctxt, Msgid) \
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180 dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
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181 #define dpgettext_expr(Domainname, Msgctxt, Msgid) \
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182 dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
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183
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184 #ifdef __GNUC__
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185 __inline
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186 #else
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187 #ifdef __cplusplus
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188 inline
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189 #endif
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190 #endif
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191 static const char *
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192 dcpgettext_expr (const char *domain,
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193 const char *msgctxt, const char *msgid,
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194 int category)
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195 {
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196 size_t msgctxt_len = strlen (msgctxt) + 1;
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197 size_t msgid_len = strlen (msgid) + 1;
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198 const char *translation;
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199 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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200 char msg_ctxt_id[msgctxt_len + msgid_len];
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201 #else
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202 char buf[1024];
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203 char *msg_ctxt_id =
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204 (msgctxt_len + msgid_len <= sizeof (buf)
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205 ? buf
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206 : (char *) malloc (msgctxt_len + msgid_len));
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207 if (msg_ctxt_id != NULL)
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208 #endif
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209 {
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210 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
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211 msg_ctxt_id[msgctxt_len - 1] = '\004';
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212 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
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213 translation = dcgettext (domain, msg_ctxt_id, category);
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214 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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215 if (msg_ctxt_id != buf)
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216 free (msg_ctxt_id);
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217 #endif
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218 if (translation != msg_ctxt_id)
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219 return translation;
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220 }
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221 return msgid;
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222 }
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223
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224 #define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
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225 dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
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226 #define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
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227 dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
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228
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229 #ifdef __GNUC__
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230 __inline
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231 #else
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232 #ifdef __cplusplus
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233 inline
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234 #endif
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235 #endif
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236 static const char *
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237 dcnpgettext_expr (const char *domain,
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238 const char *msgctxt, const char *msgid,
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239 const char *msgid_plural, unsigned long int n,
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240 int category)
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241 {
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242 size_t msgctxt_len = strlen (msgctxt) + 1;
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243 size_t msgid_len = strlen (msgid) + 1;
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244 const char *translation;
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245 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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246 char msg_ctxt_id[msgctxt_len + msgid_len];
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247 #else
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248 char buf[1024];
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249 char *msg_ctxt_id =
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250 (msgctxt_len + msgid_len <= sizeof (buf)
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251 ? buf
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252 : (char *) malloc (msgctxt_len + msgid_len));
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253 if (msg_ctxt_id != NULL)
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254 #endif
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255 {
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256 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
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257 msg_ctxt_id[msgctxt_len - 1] = '\004';
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258 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
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259 translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
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260 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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261 if (msg_ctxt_id != buf)
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262 free (msg_ctxt_id);
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263 #endif
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264 if (!(translation == msg_ctxt_id || translation == msgid_plural))
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265 return translation;
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266 }
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267 return (n == 1 ? msgid : msgid_plural);
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268 }
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269
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270 #endif /* _LIBGETTEXT_H */
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