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-rw-r--r--src/util/getopt_helpers.c290
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+/*
+ This file is part of GNUnet
+ (C) 2006, 2011 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 2, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file src/util/getopt_helpers.c
+ * @brief implements command line that sets option
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_getopt_lib.h"
+
+#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
+
+
+/**
+ * Print out program version (implements --version).
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (points to version string)
+ * @param option name of the option
+ * @param value not used (NULL)
+ * @return GNUNET_SYSERR (do not continue)
+ */
+int
+GNUNET_GETOPT_print_version_ (struct GNUNET_GETOPT_CommandLineProcessorContext
+ *ctx, void *scls, const char *option,
+ const char *value)
+{
+ const char *version = scls;
+
+ printf ("%s v%s\n", ctx->binaryName, version);
+ return GNUNET_SYSERR;
+}
+
+
+
+#define BORDER 29
+
+/**
+ * Print out details on command line options (implements --help).
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (points to about text)
+ * @param option name of the option
+ * @param value not used (NULL)
+ * @return GNUNET_SYSERR (do not continue)
+ */
+int
+GNUNET_GETOPT_format_help_ (struct GNUNET_GETOPT_CommandLineProcessorContext
+ *ctx, void *scls, const char *option,
+ const char *value)
+{
+ const char *about = scls;
+ size_t slen;
+ unsigned int i;
+ int j;
+ size_t ml;
+ size_t p;
+ char *scp;
+ const char *trans;
+ const struct GNUNET_GETOPT_CommandLineOption *opt;
+
+ printf ("%s\n%s\n", ctx->binaryOptions, gettext (about));
+ printf (_
+ ("Arguments mandatory for long options are also mandatory for short options.\n"));
+ i = 0;
+ opt = ctx->allOptions;
+ while (opt[i].description != NULL)
+ {
+ if (opt[i].shortName == '\0')
+ printf (" ");
+ else
+ printf (" -%c, ", opt[i].shortName);
+ printf ("--%s", opt[i].name);
+ slen = 8 + strlen (opt[i].name);
+ if (opt[i].argumentHelp != NULL)
+ {
+ printf ("=%s", opt[i].argumentHelp);
+ slen += 1 + strlen (opt[i].argumentHelp);
+ }
+ if (slen > BORDER)
+ {
+ printf ("\n%*s", BORDER, "");
+ slen = BORDER;
+ }
+ if (slen < BORDER)
+ {
+ printf ("%*s", (int) (BORDER - slen), "");
+ slen = BORDER;
+ }
+ if (0 < strlen (opt[i].description))
+ trans = gettext (opt[i].description);
+ else
+ trans = "";
+ ml = strlen (trans);
+ p = 0;
+OUTER:
+ while (ml - p > 78 - slen)
+ {
+ for (j = p + 78 - slen; j > p; j--)
+ {
+ if (isspace ((unsigned char) trans[j]))
+ {
+ scp = GNUNET_malloc (j - p + 1);
+ memcpy (scp, &trans[p], j - p);
+ scp[j - p] = '\0';
+ printf ("%s\n%*s", scp, BORDER + 2, "");
+ GNUNET_free (scp);
+ p = j + 1;
+ slen = BORDER + 2;
+ goto OUTER;
+ }
+ }
+ /* could not find space to break line */
+ scp = GNUNET_malloc (78 - slen + 1);
+ memcpy (scp, &trans[p], 78 - slen);
+ scp[78 - slen] = '\0';
+ printf ("%s\n%*s", scp, BORDER + 2, "");
+ GNUNET_free (scp);
+ slen = BORDER + 2;
+ p = p + 78 - slen;
+ }
+ /* print rest */
+ if (p < ml)
+ printf ("%s\n", &trans[p]);
+ if (strlen (trans) == 0)
+ printf ("\n");
+ i++;
+ }
+ printf ("Report bugs to gnunet-developers@gnu.org.\n"
+ "GNUnet home page: http://www.gnu.org/software/gnunet/\n"
+ "General help using GNU software: http://www.gnu.org/gethelp/\n");
+ return GNUNET_SYSERR;
+}
+
+
+/**
+ * Set an option of type 'unsigned int' from the command line. Each
+ * time the option flag is given, the value is incremented by one.
+ * A pointer to this function should be passed as part of the
+ * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
+ * of this type. It should be followed by a pointer to a value of
+ * type 'int'.
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (will point to the 'int')
+ * @param option name of the option
+ * @param value not used (NULL)
+ * @return GNUNET_OK
+ */
+int
+GNUNET_GETOPT_increment_value (struct GNUNET_GETOPT_CommandLineProcessorContext
+ *ctx, void *scls, const char *option,
+ const char *value)
+{
+ int *val = scls;
+
+ (*val)++;
+ return GNUNET_OK;
+}
+
+
+/**
+ * Set an option of type 'int' from the command line to 1 if the
+ * given option is present.
+ * A pointer to this function should be passed as part of the
+ * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
+ * of this type. It should be followed by a pointer to a value of
+ * type 'int'.
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (will point to the 'int')
+ * @param option name of the option
+ * @param value not used (NULL)
+ * @return GNUNET_OK
+ */
+int
+GNUNET_GETOPT_set_one (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
+ void *scls, const char *option, const char *value)
+{
+ int *val = scls;
+
+ *val = 1;
+ return GNUNET_OK;
+}
+
+
+/**
+ * Set an option of type 'char *' from the command line.
+ * A pointer to this function should be passed as part of the
+ * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
+ * of this type. It should be followed by a pointer to a value of
+ * type 'char *'.
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (will point to the 'char *',
+ * which will be allocated)
+ * @param option name of the option
+ * @param value actual value of the option (a string)
+ * @return GNUNET_OK
+ */
+int
+GNUNET_GETOPT_set_string (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
+ void *scls, const char *option, const char *value)
+{
+ char **val = scls;
+
+ GNUNET_assert (value != NULL);
+ GNUNET_free_non_null (*val);
+ *val = GNUNET_strdup (value);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Set an option of type 'unsigned long long' from the command line.
+ * A pointer to this function should be passed as part of the
+ * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
+ * of this type. It should be followed by a pointer to a value of
+ * type 'unsigned long long'.
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (will point to the 'unsigned long long')
+ * @param option name of the option
+ * @param value actual value of the option as a string.
+ * @return GNUNET_OK if parsing the value worked
+ */
+int
+GNUNET_GETOPT_set_ulong (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
+ void *scls, const char *option, const char *value)
+{
+ unsigned long long *val = scls;
+
+ if (1 != SSCANF (value, "%llu", val))
+ {
+ FPRINTF (stderr, _("You must pass a number to the `%s' option.\n"), option);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Set an option of type 'unsigned int' from the command line.
+ * A pointer to this function should be passed as part of the
+ * 'struct GNUNET_GETOPT_CommandLineOption' array to initialize options
+ * of this type. It should be followed by a pointer to a value of
+ * type 'unsigned int'.
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (will point to the 'unsigned int')
+ * @param option name of the option
+ * @param value actual value of the option as a string.
+ * @return GNUNET_OK if parsing the value worked
+ */
+int
+GNUNET_GETOPT_set_uint (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
+ void *scls, const char *option, const char *value)
+{
+ unsigned int *val = scls;
+
+ if (1 != SSCANF (value, "%u", val))
+ {
+ FPRINTF (stderr, _("You must pass a number to the `%s' option.\n"), option);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/* end of getopt_helpers.c */
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