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annotate lib/version-etc.c @ 7048:a20a6a93ab74

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Use the stdarg module.
author Bruno Haible <bruno@clisp.org>
date Tue, 25 Jul 2006 11:32:36 +0000
parents 6b31c8787689
children 8a1a9361108c
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1 /* Utility to help print --version output in a consistent format.
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2 Copyright (C) 1999-2006 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 2, 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
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15 along 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 /* Written by Jim Meyering. */
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19
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20 #ifdef HAVE_CONFIG_H
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21 # include <config.h>
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22 #endif
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23
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24 /* Specification. */
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25 #include "version-etc.h"
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26
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27 #include <stdarg.h>
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28 #include <stdio.h>
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29 #include <stdlib.h>
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30
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31 #if USE_UNLOCKED_IO
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32 # include "unlocked-io.h"
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33 #endif
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34
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35 #include "gettext.h"
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36 #define _(msgid) gettext (msgid)
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37
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38 enum { COPYRIGHT_YEAR = 2006 };
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39
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40 /* Like version_etc, below, but with the NULL-terminated author list
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41 provided via a variable of type va_list. */
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42 void
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43 version_etc_va (FILE *stream,
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44 const char *command_name, const char *package,
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45 const char *version, va_list authors)
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46 {
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47 size_t n_authors;
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48
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49 /* Count the number of authors. */
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50 {
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51 va_list tmp_authors;
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52
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53 va_copy (tmp_authors, authors);
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54
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55 n_authors = 0;
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56 while (va_arg (tmp_authors, const char *) != NULL)
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57 ++n_authors;
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58 }
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59
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60 if (command_name)
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61 fprintf (stream, "%s (%s) %s\n", command_name, package, version);
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62 else
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63 fprintf (stream, "%s %s\n", package, version);
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64
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65 /* TRANSLATORS: Translate "(C)" to the copyright symbol
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66 (C-in-a-circle), if this symbol is available in the user's
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67 locale. Otherwise, do not translate "(C)"; leave it as-is. */
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68 fprintf (stream, version_etc_copyright, _("(C)"), COPYRIGHT_YEAR);
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69
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70 fputs (_("\
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71 \n\
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72 This is free software. You may redistribute copies of it under the terms of\n\
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73 the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n\
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74 There is NO WARRANTY, to the extent permitted by law.\n\
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75 \n\
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76 "),
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77 stream);
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78
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79 switch (n_authors)
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80 {
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81 case 0:
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82 /* The caller must provide at least one author name. */
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83 abort ();
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84 case 1:
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85 /* TRANSLATORS: %s denotes an author name. */
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86 vfprintf (stream, _("Written by %s.\n"), authors);
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87 break;
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88 case 2:
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89 /* TRANSLATORS: Each %s denotes an author name. */
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90 vfprintf (stream, _("Written by %s and %s.\n"), authors);
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91 break;
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92 case 3:
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93 /* TRANSLATORS: Each %s denotes an author name. */
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94 vfprintf (stream, _("Written by %s, %s, and %s.\n"), authors);
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95 break;
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96 case 4:
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97 /* TRANSLATORS: Each %s denotes an author name.
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98 You can use line breaks, estimating that each author name occupies
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99 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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100 vfprintf (stream, _("Written by %s, %s, %s,\nand %s.\n"), authors);
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101 break;
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102 case 5:
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103 /* TRANSLATORS: Each %s denotes an author name.
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104 You can use line breaks, estimating that each author name occupies
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105 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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106 vfprintf (stream, _("Written by %s, %s, %s,\n%s, and %s.\n"), authors);
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107 break;
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108 case 6:
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109 /* TRANSLATORS: Each %s denotes an author name.
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110 You can use line breaks, estimating that each author name occupies
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111 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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112 vfprintf (stream, _("Written by %s, %s, %s,\n%s, %s, and %s.\n"),
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113 authors);
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114 break;
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115 case 7:
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116 /* TRANSLATORS: Each %s denotes an author name.
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117 You can use line breaks, estimating that each author name occupies
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118 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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119 vfprintf (stream, _("Written by %s, %s, %s,\n%s, %s, %s, and %s.\n"),
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120 authors);
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121 break;
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122 case 8:
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123 /* TRANSLATORS: Each %s denotes an author name.
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124 You can use line breaks, estimating that each author name occupies
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125 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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126 vfprintf (stream, _("\
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127 Written by %s, %s, %s,\n%s, %s, %s, %s,\nand %s.\n"),
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128 authors);
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129 break;
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130 case 9:
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131 /* TRANSLATORS: Each %s denotes an author name.
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132 You can use line breaks, estimating that each author name occupies
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133 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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134 vfprintf (stream, _("\
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135 Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, and %s.\n"),
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136 authors);
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137 break;
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138 default:
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139 /* 10 or more authors. Use an abbreviation, since the human reader
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140 will probably not want to read the entire list anyway. */
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141 /* TRANSLATORS: Each %s denotes an author name.
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142 You can use line breaks, estimating that each author name occupies
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143 ca. 16 screen columns and that a screen line has ca. 80 columns. */
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144 vfprintf (stream, _("\
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145 Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, %s, and others.\n"),
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146 authors);
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147 break;
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148 }
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149 va_end (authors);
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150 }
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151
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152
1941
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153 /* Display the --version information the standard way.
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154
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155 If COMMAND_NAME is NULL, the PACKAGE is asumed to be the name of
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156 the program. The formats are therefore:
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157
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158 PACKAGE VERSION
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159
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160 or
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161
4771
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162 COMMAND_NAME (PACKAGE) VERSION.
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163
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164 The author names are passed as separate arguments, with an additional
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165 NULL argument at the end. */
1754
ddaa9b176f63 *** empty log message ***
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166 void
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167 version_etc (FILE *stream,
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168 const char *command_name, const char *package,
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169 const char *version, /* const char *author1, ...*/ ...)
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170 {
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171 va_list authors;
1941
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172
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173 va_start (authors, version);
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174 version_etc_va (stream, command_name, package, version, authors);
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175 }