2 This file is part of GNUnet
3 (C) 2006, 2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file src/util/getopt_helpers.c
23 * @brief implements command line that sets option
24 * @author Christian Grothoff
28 #include "gnunet_common.h"
29 #include "gnunet_getopt_lib.h"
31 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
35 * Print out program version (implements --version).
37 * @param ctx command line processing context
38 * @param scls additional closure (points to version string)
39 * @param option name of the option
40 * @param value not used (NULL)
41 * @return GNUNET_SYSERR (do not continue)
44 GNUNET_GETOPT_print_version_ (struct GNUNET_GETOPT_CommandLineProcessorContext
45 *ctx, void *scls, const char *option,
48 const char *version = scls;
50 printf ("%s v%s\n", ctx->binaryName, version);
59 * Print out details on command line options (implements --help).
61 * @param ctx command line processing context
62 * @param scls additional closure (points to about text)
63 * @param option name of the option
64 * @param value not used (NULL)
65 * @return GNUNET_SYSERR (do not continue)
68 GNUNET_GETOPT_format_help_ (struct GNUNET_GETOPT_CommandLineProcessorContext
69 *ctx, void *scls, const char *option,
72 const char *about = scls;
80 const struct GNUNET_GETOPT_CommandLineOption *opt;
82 printf ("%s\n%s\n", ctx->binaryOptions, gettext (about));
84 ("Arguments mandatory for long options are also mandatory for short options.\n"));
86 opt = ctx->allOptions;
87 while (opt[i].description != NULL)
89 if (opt[i].shortName == '\0')
92 printf (" -%c, ", opt[i].shortName);
93 printf ("--%s", opt[i].name);
94 slen = 8 + strlen (opt[i].name);
95 if (opt[i].argumentHelp != NULL)
97 printf ("=%s", opt[i].argumentHelp);
98 slen += 1 + strlen (opt[i].argumentHelp);
102 printf ("\n%*s", BORDER, "");
107 printf ("%*s", (int) (BORDER - slen), "");
110 if (0 < strlen (opt[i].description))
111 trans = gettext (opt[i].description);
117 while (ml - p > 78 - slen)
119 for (j = p + 78 - slen; j > p; j--)
121 if (isspace ((unsigned char) trans[j]))
123 scp = GNUNET_malloc (j - p + 1);
124 memcpy (scp, &trans[p], j - p);
126 printf ("%s\n%*s", scp, BORDER + 2, "");
133 /* could not find space to break line */
134 scp = GNUNET_malloc (78 - slen + 1);
135 memcpy (scp, &trans[p], 78 - slen);
136 scp[78 - slen] = '\0';
137 printf ("%s\n%*s", scp, BORDER + 2, "");
144 printf ("%s\n", &trans[p]);
145 if (strlen (trans) == 0)
149 printf ("Report bugs to gnunet-developers@gnu.org.\n"
150 "GNUnet home page: http://www.gnu.org/software/gnunet/\n"
151 "General help using GNU software: http://www.gnu.org/gethelp/\n");
152 return GNUNET_SYSERR;
157 * Set an option of type 'unsigned int' from the command line. Each
158 * time the option flag is given, the value is incremented by one.
159 * A pointer to this function should be passed as part of the
160 * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
161 * of this type. It should be followed by a pointer to a value of
164 * @param ctx command line processing context
165 * @param scls additional closure (will point to the 'int')
166 * @param option name of the option
167 * @param value not used (NULL)
171 GNUNET_GETOPT_increment_value (struct
172 GNUNET_GETOPT_CommandLineProcessorContext *ctx,
173 void *scls, const char *option,
184 * Set an option of type 'int' from the command line to 1 if the
185 * given option is present.
186 * A pointer to this function should be passed as part of the
187 * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
188 * of this type. It should be followed by a pointer to a value of
191 * @param ctx command line processing context
192 * @param scls additional closure (will point to the 'int')
193 * @param option name of the option
194 * @param value not used (NULL)
198 GNUNET_GETOPT_set_one (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
199 void *scls, const char *option, const char *value)
209 * Set an option of type 'char *' from the command line.
210 * A pointer to this function should be passed as part of the
211 * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
212 * of this type. It should be followed by a pointer to a value of
215 * @param ctx command line processing context
216 * @param scls additional closure (will point to the 'char *',
217 * which will be allocated)
218 * @param option name of the option
219 * @param value actual value of the option (a string)
223 GNUNET_GETOPT_set_string (struct GNUNET_GETOPT_CommandLineProcessorContext
224 *ctx, void *scls, const char *option,
229 GNUNET_assert (value != NULL);
230 GNUNET_free_non_null (*val);
231 *val = GNUNET_strdup (value);
237 * Set an option of type 'unsigned long long' from the command line.
238 * A pointer to this function should be passed as part of the
239 * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
240 * of this type. It should be followed by a pointer to a value of
241 * type 'unsigned long long'.
243 * @param ctx command line processing context
244 * @param scls additional closure (will point to the 'unsigned long long')
245 * @param option name of the option
246 * @param value actual value of the option as a string.
247 * @return GNUNET_OK if parsing the value worked
250 GNUNET_GETOPT_set_ulong (struct GNUNET_GETOPT_CommandLineProcessorContext
251 *ctx, void *scls, const char *option,
254 unsigned long long *val = scls;
256 if (1 != SSCANF (value, "%llu", val))
258 fprintf (stderr, _("You must pass a number to the `%s' option.\n"),
260 return GNUNET_SYSERR;
267 * Set an option of type 'unsigned long long' from the command line.
268 * A pointer to this function should be passed as part of the
269 * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
270 * of this type. It should be followed by a pointer to a value of
271 * type 'unsigned int'.
273 * @param ctx command line processing context
274 * @param scls additional closure (will point to the 'unsigned int')
275 * @param option name of the option
276 * @param value actual value of the option as a string.
277 * @return GNUNET_OK if parsing the value worked
280 GNUNET_GETOPT_set_uint (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
281 void *scls, const char *option, const char *value)
283 unsigned int *val = scls;
285 if (1 != SSCANF (value, "%u", val))
287 fprintf (stderr, _("You must pass a number to the `%s' option.\n"),
289 return GNUNET_SYSERR;
295 /* end of getopt_helpers.c */