lib/version-etc.c

   1 /* Print --version and bug-reporting information in a consistent format.
   2    Copyright (C) 1999-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Jim Meyering. */
  18
  19 #include <config.h>
  20
  21 /* Specification.  */
  22 #include "version-etc.h"
  23
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26
  27 #if USE_UNLOCKED_IO
  28 # include "unlocked-io.h"
  29 #endif
  30
  31 #include "gettext.h"
  32 #define _(msgid) gettext (msgid)
  33
  34 /* If you use AM_INIT_AUTOMAKE's no-define option,
  35    PACKAGE is not defined.  Use PACKAGE_TARNAME instead.  */
  36 #if ! defined PACKAGE && defined PACKAGE_TARNAME
  37 # define PACKAGE PACKAGE_TARNAME
  38 #endif
  39
  40 enum { COPYRIGHT_YEAR = 2020 };
  41
  42 /* The three functions below display the --version information the
  43    standard way.
  44
  45    If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of
  46    the program.  The formats are therefore:
  47
  48    PACKAGE VERSION
  49
  50    or
  51
  52    COMMAND_NAME (PACKAGE) VERSION.
  53
  54    The functions differ in the way they are passed author names. */
  55
  56 /* Display the --version information the standard way.
  57
  58    Author names are given in the array AUTHORS. N_AUTHORS is the
  59    number of elements in the array. */
  60 void
  61 version_etc_arn (FILE *stream,
  62                  const char *command_name, const char *package,
  63                  const char *version,
  64                  const char * const * authors, size_t n_authors)
  65 {
  66   if (command_name)
  67     fprintf (stream, "%s (%s) %s\n", command_name, package, version);
  68   else
  69     fprintf (stream, "%s %s\n", package, version);
  70
  71 #ifdef PACKAGE_PACKAGER
  72 # ifdef PACKAGE_PACKAGER_VERSION
  73   fprintf (stream, _("Packaged by %s (%s)\n"), PACKAGE_PACKAGER,
  74            PACKAGE_PACKAGER_VERSION);
  75 # else
  76   fprintf (stream, _("Packaged by %s\n"), PACKAGE_PACKAGER);
  77 # endif
  78 #endif
  79
  80   /* TRANSLATORS: Translate "(C)" to the copyright symbol
  81      (C-in-a-circle), if this symbol is available in the user's
  82      locale.  Otherwise, do not translate "(C)"; leave it as-is.  */
  83   fprintf (stream, version_etc_copyright, _("(C)"), COPYRIGHT_YEAR);
  84
  85   fputs ("\n", stream);
  86
  87   /* TRANSLATORS: The %s placeholder is the web address of the GPL license.  */
  88   fprintf (stream, _("\
  89 License GPLv3+: GNU GPL version 3 or later <%s>.\n\
  90 This is free software: you are free to change and redistribute it.\n\
  91 There is NO WARRANTY, to the extent permitted by law.\n\
  92 "),
  93            "https://gnu.org/licenses/gpl.html");
  94
  95   fputs ("\n", stream);
  96
  97   switch (n_authors)
  98     {
  99     case 0:
 100       /* No authors are given.  The caller should output authorship
 101          info after calling this function.  */
 102       break;
 103     case 1:
 104       /* TRANSLATORS: %s denotes an author name.  */
 105       fprintf (stream, _("Written by %s.\n"), authors[0]);
 106       break;
 107     case 2:
 108       /* TRANSLATORS: Each %s denotes an author name.  */
 109       fprintf (stream, _("Written by %s and %s.\n"), authors[0], authors[1]);
 110       break;
 111     case 3:
 112       /* TRANSLATORS: Each %s denotes an author name.  */
 113       fprintf (stream, _("Written by %s, %s, and %s.\n"),
 114                authors[0], authors[1], authors[2]);
 115       break;
 116     case 4:
 117       /* TRANSLATORS: Each %s denotes an author name.
 118          You can use line breaks, estimating that each author name occupies
 119          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 120       fprintf (stream, _("Written by %s, %s, %s,\nand %s.\n"),
 121                authors[0], authors[1], authors[2], authors[3]);
 122       break;
 123     case 5:
 124       /* TRANSLATORS: Each %s denotes an author name.
 125          You can use line breaks, estimating that each author name occupies
 126          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 127       fprintf (stream, _("Written by %s, %s, %s,\n%s, and %s.\n"),
 128                authors[0], authors[1], authors[2], authors[3], authors[4]);
 129       break;
 130     case 6:
 131       /* TRANSLATORS: Each %s denotes an author name.
 132          You can use line breaks, estimating that each author name occupies
 133          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 134       fprintf (stream, _("Written by %s, %s, %s,\n%s, %s, and %s.\n"),
 135                authors[0], authors[1], authors[2], authors[3], authors[4],
 136                authors[5]);
 137       break;
 138     case 7:
 139       /* TRANSLATORS: Each %s denotes an author name.
 140          You can use line breaks, estimating that each author name occupies
 141          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 142       fprintf (stream, _("Written by %s, %s, %s,\n%s, %s, %s, and %s.\n"),
 143                authors[0], authors[1], authors[2], authors[3], authors[4],
 144                authors[5], authors[6]);
 145       break;
 146     case 8:
 147       /* TRANSLATORS: Each %s denotes an author name.
 148          You can use line breaks, estimating that each author name occupies
 149          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 150       fprintf (stream, _("\
 151 Written by %s, %s, %s,\n%s, %s, %s, %s,\nand %s.\n"),
 152                 authors[0], authors[1], authors[2], authors[3], authors[4],
 153                 authors[5], authors[6], authors[7]);
 154       break;
 155     case 9:
 156       /* TRANSLATORS: Each %s denotes an author name.
 157          You can use line breaks, estimating that each author name occupies
 158          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 159       fprintf (stream, _("\
 160 Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, and %s.\n"),
 161                authors[0], authors[1], authors[2], authors[3], authors[4],
 162                authors[5], authors[6], authors[7], authors[8]);
 163       break;
 164     default:
 165       /* 10 or more authors.  Use an abbreviation, since the human reader
 166          will probably not want to read the entire list anyway.  */
 167       /* TRANSLATORS: Each %s denotes an author name.
 168          You can use line breaks, estimating that each author name occupies
 169          ca. 16 screen columns and that a screen line has ca. 80 columns.  */
 170       fprintf (stream, _("\
 171 Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, %s, and others.\n"),
 172                 authors[0], authors[1], authors[2], authors[3], authors[4],
 173                 authors[5], authors[6], authors[7], authors[8]);
 174       break;
 175     }
 176 }
 177
 178 /* Display the --version information the standard way.  See the initial
 179    comment to this module, for more information.
 180
 181    Author names are given in the NULL-terminated array AUTHORS. */
 182 void
 183 version_etc_ar (FILE *stream,
 184                 const char *command_name, const char *package,
 185                 const char *version, const char * const * authors)
 186 {
 187   size_t n_authors;
 188
 189   for (n_authors = 0; authors[n_authors]; n_authors++)
 190     ;
 191   version_etc_arn (stream, command_name, package, version, authors, n_authors);
 192 }
 193
 194 /* Display the --version information the standard way.  See the initial
 195    comment to this module, for more information.
 196
 197    Author names are given in the NULL-terminated va_list AUTHORS. */
 198 void
 199 version_etc_va (FILE *stream,
 200                 const char *command_name, const char *package,
 201                 const char *version, va_list authors)
 202 {
 203   size_t n_authors;
 204   const char *authtab[10];
 205
 206   for (n_authors = 0;
 207        n_authors < 10
 208          && (authtab[n_authors] = va_arg (authors, const char *)) != NULL;
 209        n_authors++)
 210     ;
 211   version_etc_arn (stream, command_name, package, version,
 212                    authtab, n_authors);
 213 }
 214
 215
 216 /* Display the --version information the standard way.
 217
 218    If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of
 219    the program.  The formats are therefore:
 220
 221    PACKAGE VERSION
 222
 223    or
 224
 225    COMMAND_NAME (PACKAGE) VERSION.
 226
 227    The authors names are passed as separate arguments, with an additional
 228    NULL argument at the end.  */
 229 void
 230 version_etc (FILE *stream,
 231              const char *command_name, const char *package,
 232              const char *version, /* const char *author1, ...*/ ...)
 233 {
 234   va_list authors;
 235
 236   va_start (authors, version);
 237   version_etc_va (stream, command_name, package, version, authors);
 238   va_end (authors);
 239 }
 240
 241 void
 242 emit_bug_reporting_address (void)
 243 {
 244   fputs ("\n", stdout);
 245   /* TRANSLATORS: The placeholder indicates the bug-reporting address
 246      for this package.  Please add _another line_ saying
 247      "Report translation bugs to <...>\n" with the address for translation
 248      bugs (typically your translation team's web or email address).  */
 249   printf (_("Report bugs to: %s\n"), PACKAGE_BUGREPORT);
 250 #ifdef PACKAGE_PACKAGER_BUG_REPORTS
 251   printf (_("Report %s bugs to: %s\n"), PACKAGE_PACKAGER,
 252           PACKAGE_PACKAGER_BUG_REPORTS);
 253 #endif
 254 #ifdef PACKAGE_URL
 255   printf (_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
 256 #else
 257   printf (_("%s home page: <%s>\n"),
 258           PACKAGE_NAME, "https://www.gnu.org/software/" PACKAGE "/");
 259 #endif
 260   printf (_("General help using GNU software: <%s>\n"),
 261           "https://www.gnu.org/gethelp/");
 262 }