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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, 2009-2010 Free Software
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3 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 along
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16 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 _LIBGETTEXT_H
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20 #define _LIBGETTEXT_H 1
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21
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22 /* NLS can be disabled through the configure --disable-nls option. */
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23 #if ENABLE_NLS
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24
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25 /* Get declarations of GNU message catalog functions. */
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26 # include <libintl.h>
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27
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28 /* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
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29 the gettext() and ngettext() macros. This is an alternative to calling
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30 textdomain(), and is useful for libraries. */
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31 # ifdef DEFAULT_TEXT_DOMAIN
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32 # undef gettext
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33 # define gettext(Msgid) \
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34 dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
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35 # undef ngettext
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36 # define ngettext(Msgid1, Msgid2, N) \
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37 dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
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38 # endif
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39
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40 #else
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41
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42 /* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
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43 chokes if dcgettext is defined as a macro. So include it now, to make
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44 later inclusions of <locale.h> a NOP. We don't include <libintl.h>
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45 as well because people using "gettext.h" will not include <libintl.h>,
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46 and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
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47 is OK. */
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48 #if defined(__sun)
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49 # include <locale.h>
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50 #endif
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51
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52 /* Many header files from the libstdc++ coming with g++ 3.3 or newer include
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53 <libintl.h>, which chokes if dcgettext is defined as a macro. So include
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54 it now, to make later inclusions of <libintl.h> a NOP. */
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55 #if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
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56 # include <cstdlib>
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57 # if (__GLIBC__ >= 2) || _GLIBCXX_HAVE_LIBINTL_H
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58 # include <libintl.h>
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59 # endif
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60 #endif
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61
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62 /* Disabled NLS.
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63 The casts to 'const char *' serve the purpose of producing warnings
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64 for invalid uses of the value returned from these functions.
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65 On pre-ANSI systems without 'const', the config.h file is supposed to
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66 contain "#define const". */
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67 # undef gettext
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68 # define gettext(Msgid) ((const char *) (Msgid))
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69 # undef dgettext
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70 # define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
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71 # undef dcgettext
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72 # define dcgettext(Domainname, Msgid, Category) \
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73 ((void) (Category), dgettext (Domainname, Msgid))
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74 # undef ngettext
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75 # define ngettext(Msgid1, Msgid2, N) \
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76 ((N) == 1 \
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77 ? ((void) (Msgid2), (const char *) (Msgid1)) \
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78 : ((void) (Msgid1), (const char *) (Msgid2)))
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79 # undef dngettext
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80 # define dngettext(Domainname, Msgid1, Msgid2, N) \
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81 ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
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82 # undef dcngettext
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83 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
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84 ((void) (Category), dngettext(Domainname, Msgid1, Msgid2, N))
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85 # undef textdomain
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86 # define textdomain(Domainname) ((const char *) (Domainname))
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87 # undef bindtextdomain
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88 # define bindtextdomain(Domainname, Dirname) \
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89 ((void) (Domainname), (const char *) (Dirname))
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90 # undef bind_textdomain_codeset
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91 # define bind_textdomain_codeset(Domainname, Codeset) \
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92 ((void) (Domainname), (const char *) (Codeset))
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93
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94 #endif
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95
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96 /* A pseudo function call that serves as a marker for the automated
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97 extraction of messages, but does not call gettext(). The run-time
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98 translation is done at a different place in the code.
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99 The argument, String, should be a literal string. Concatenated strings
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100 and other string expressions won't work.
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101 The macro's expansion is not parenthesized, so that it is suitable as
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102 initializer for static 'char[]' or 'const char[]' variables. */
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103 #define gettext_noop(String) String
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104
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105 /* The separator between msgctxt and msgid in a .mo file. */
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106 #define GETTEXT_CONTEXT_GLUE "\004"
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107
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108 /* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
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109 MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be
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110 short and rarely need to change.
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111 The letter 'p' stands for 'particular' or 'special'. */
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112 #ifdef DEFAULT_TEXT_DOMAIN
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113 # define pgettext(Msgctxt, Msgid) \
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114 pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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115 #else
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116 # define pgettext(Msgctxt, Msgid) \
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117 pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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118 #endif
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119 #define dpgettext(Domainname, Msgctxt, Msgid) \
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120 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
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121 #define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
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122 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
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123 #ifdef DEFAULT_TEXT_DOMAIN
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124 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
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125 npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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126 #else
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127 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
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128 npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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129 #endif
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130 #define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
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131 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
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132 #define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
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133 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
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134
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135 #ifdef __GNUC__
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136 __inline
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137 #else
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138 #ifdef __cplusplus
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139 inline
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140 #endif
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141 #endif
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142 static const char *
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143 pgettext_aux (const char *domain,
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144 const char *msg_ctxt_id, const char *msgid,
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145 int category)
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146 {
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147 const char *translation = dcgettext (domain, msg_ctxt_id, category);
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148 if (translation == msg_ctxt_id)
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149 return msgid;
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150 else
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151 return translation;
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152 }
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153
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154 #ifdef __GNUC__
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155 __inline
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156 #else
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157 #ifdef __cplusplus
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158 inline
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159 #endif
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160 #endif
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161 static const char *
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162 npgettext_aux (const char *domain,
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163 const char *msg_ctxt_id, const char *msgid,
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164 const char *msgid_plural, unsigned long int n,
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165 int category)
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166 {
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167 const char *translation =
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168 dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
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169 if (translation == msg_ctxt_id || translation == msgid_plural)
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170 return (n == 1 ? msgid : msgid_plural);
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171 else
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172 return translation;
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173 }
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174
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175 /* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID
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176 can be arbitrary expressions. But for string literals these macros are
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177 less efficient than those above. */
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178
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179 #include <string.h>
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180
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181 #define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS \
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182 (((__GNUC__ >= 3 || __GNUG__ >= 2) && !__STRICT_ANSI__) \
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183 /* || __STDC_VERSION__ >= 199901L */ )
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184
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185 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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186 #include <stdlib.h>
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187 #endif
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188
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189 #define pgettext_expr(Msgctxt, Msgid) \
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190 dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
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191 #define dpgettext_expr(Domainname, Msgctxt, Msgid) \
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192 dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
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193
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194 #ifdef __GNUC__
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195 __inline
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196 #else
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197 #ifdef __cplusplus
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198 inline
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199 #endif
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200 #endif
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201 static const char *
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202 dcpgettext_expr (const char *domain,
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203 const char *msgctxt, const char *msgid,
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204 int category)
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205 {
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206 size_t msgctxt_len = strlen (msgctxt) + 1;
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207 size_t msgid_len = strlen (msgid) + 1;
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208 const char *translation;
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209 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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210 char msg_ctxt_id[msgctxt_len + msgid_len];
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211 #else
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212 char buf[1024];
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213 char *msg_ctxt_id =
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214 (msgctxt_len + msgid_len <= sizeof (buf)
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215 ? buf
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216 : (char *) malloc (msgctxt_len + msgid_len));
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217 if (msg_ctxt_id != NULL)
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218 #endif
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219 {
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220 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
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221 msg_ctxt_id[msgctxt_len - 1] = '\004';
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222 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
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223 translation = dcgettext (domain, msg_ctxt_id, category);
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224 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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225 if (msg_ctxt_id != buf)
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226 free (msg_ctxt_id);
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227 #endif
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228 if (translation != msg_ctxt_id)
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229 return translation;
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230 }
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231 return msgid;
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232 }
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233
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234 #define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
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235 dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
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236 #define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
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237 dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
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238
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239 #ifdef __GNUC__
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240 __inline
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241 #else
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242 #ifdef __cplusplus
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243 inline
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244 #endif
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245 #endif
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246 static const char *
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247 dcnpgettext_expr (const char *domain,
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248 const char *msgctxt, const char *msgid,
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249 const char *msgid_plural, unsigned long int n,
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250 int category)
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251 {
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252 size_t msgctxt_len = strlen (msgctxt) + 1;
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253 size_t msgid_len = strlen (msgid) + 1;
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254 const char *translation;
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255 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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256 char msg_ctxt_id[msgctxt_len + msgid_len];
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257 #else
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258 char buf[1024];
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259 char *msg_ctxt_id =
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260 (msgctxt_len + msgid_len <= sizeof (buf)
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261 ? buf
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262 : (char *) malloc (msgctxt_len + msgid_len));
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263 if (msg_ctxt_id != NULL)
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264 #endif
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265 {
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266 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
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267 msg_ctxt_id[msgctxt_len - 1] = '\004';
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268 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
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269 translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
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270 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
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271 if (msg_ctxt_id != buf)
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272 free (msg_ctxt_id);
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273 #endif
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274 if (!(translation == msg_ctxt_id || translation == msgid_plural))
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275 return translation;
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276 }
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277 return (n == 1 ? msgid : msgid_plural);
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278 }
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279
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280 #endif /* _LIBGETTEXT_H */
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