getopt_helpers.c File Reference

implements command line that sets option More...

#include "platform.h"
#include "gnunet_util_lib.h"

Include dependency graph for getopt_helpers.c:

Go to the source code of this file.

Data Structures
struct	Base32Context
	Closure for set_base32(). More...

Macros
#define	LOG(kind, ...)   GNUNET_log_from (kind, "util-getopt", __VA_ARGS__)
#define	BORDER   29
	At what offset does the help text start? More...

Functions
static int	print_version (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Print out program version (implements –version). More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_version (const char *version)
	Define the option to print the version of the application (-v option) More...
static int	format_help (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Print out details on command line options (implements –help). More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_help (const char *about)
	Defining the option to print the command line help text (-h option). More...
static int	increment_value (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'unsigned int' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_increment_uint (char shortName, const char *name, const char *description, unsigned int *val)
	Increment val each time the option flag is given by one. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_verbose (unsigned int *level)
	Define the '-V' verbosity option. More...
static int	set_one (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'int' from the command line to 1 if the given option is present. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_flag (char shortName, const char *name, const char *description, int *val)
	Allow user to specify a flag (which internally means setting an integer to 1/GNUNET_YES/GNUNET_OK. More...
static int	set_string (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'char *' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_string (char shortName, const char *name, const char *argumentHelp, const char *description, char **str)
	Allow user to specify a string. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_loglevel (char **level)
	Define the '-L' log level option. More...
static int	set_filename (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'char *' from the command line with filename expansion a la GNUNET_STRINGS_filename_expand(). More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_filename (char shortName, const char *name, const char *argumentHelp, const char *description, char **str)
	Allow user to specify a filename (automatically path expanded). More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_logfile (char **logfn)
	Allow user to specify log file name (-l option) More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_cfgfile (char **fn)
	Allow user to specify configuration file name (-c option) More...
static int	set_ulong (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'unsigned long long' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_ulong (char shortName, const char *name, const char *argumentHelp, const char *description, unsigned long long *val)
	Allow user to specify an unsigned long long More...
static int	set_timetravel_time (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'struct GNUNET_TIME_Relative' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_timetravel (char shortName, const char *name)
	Allow user to specify a long long with an offset to add to the current system time to construct the time seen by the application. More...
static int	set_relative_time (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'struct GNUNET_TIME_Relative' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_relative_time (char shortName, const char *name, const char *argumentHelp, const char *description, struct GNUNET_TIME_Relative *val)
	Allow user to specify a struct GNUNET_TIME_Relative (using human-readable "fancy" time). More...
static int	set_absolute_time (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'struct GNUNET_TIME_Absolute' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_absolute_time (char shortName, const char *name, const char *argumentHelp, const char *description, struct GNUNET_TIME_Absolute *val)
	Allow user to specify a struct GNUNET_TIME_Absolute (using human-readable "fancy" time). More...
static int	set_uint (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'unsigned int' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_uint (char shortName, const char *name, const char *argumentHelp, const char *description, unsigned int *val)
	Allow user to specify an unsigned integer. More...
static int	set_uint16 (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'uint16_t' from the command line. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_uint16 (char shortName, const char *name, const char *argumentHelp, const char *description, uint16_t *val)
	Allow user to specify an uint16_t. More...
static int	set_base32 (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx, void *scls, const char *option, const char *value)
	Set an option of type 'unsigned int' from the command line. More...
static void	free_bc (void *cls)
	Helper function to clean up after GNUNET_GETOPT_option_base32_fixed_size. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_base32_fixed_size (char shortName, const char *name, const char *argumentHelp, const char *description, void *val, size_t val_size)
	Allow user to specify a binary value using Crockford Base32 encoding. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_mandatory (struct GNUNET_GETOPT_CommandLineOption opt)
	Make the given option mandatory. More...
struct GNUNET_GETOPT_CommandLineOption	GNUNET_GETOPT_option_exclusive (struct GNUNET_GETOPT_CommandLineOption opt)
	Make the given option mutually exclusive with other options. More...

Detailed Description

implements command line that sets option

Author

Christian Grothoff

Definition in file getopt_helpers.c.

Macro Definition Documentation

LOG

#define LOG	(		kind,
			...
	)		GNUNET_log_from (kind, "util-getopt", __VA_ARGS__)

Definition at line 29 of file getopt_helpers.c.

BORDER

#define BORDER   29

At what offset does the help text start?

Definition at line 82 of file getopt_helpers.c.

Referenced by format_help().

Function Documentation

print_version()

static int print_version ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Print out program version (implements –version).

Parameters

ctx	command line processing context
scls	additional closure (points to version string)
option	name of the option
value	not used (NULL)

Returns

GNUNET_NO (do not continue, not an error)

Definition at line 42 of file getopt_helpers.c.

References GNUNET_GETOPT_CommandLineProcessorContext::binaryName, and GNUNET_NO.

Referenced by GNUNET_GETOPT_option_version().

{
  const char *version = scls;

  (void) option;
  (void) value;
  printf ("%s v%s\n", ctx->binaryName, version);
  return GNUNET_NO;
}

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format_help()

static int format_help ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Print out details on command line options (implements –help).

Parameters

ctx	command line processing context
scls	additional closure (points to about text)
option	name of the option
value	not used (NULL)

Returns

GNUNET_NO (do not continue, not an error)

Definition at line 94 of file getopt_helpers.c.

References _, GNUNET_GETOPT_CommandLineProcessorContext::allOptions, GNUNET_GETOPT_CommandLineProcessorContext::binaryOptions, BORDER, GNUNET_OS_ProjectData::bug_email, gettext, GNUNET_free, GNUNET_malloc, GNUNET_memcpy, GNUNET_NO, GNUNET_OS_project_data_get(), GNUNET_OS_ProjectData::homepage, GNUNET_OS_ProjectData::is_gnu, name, p, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_help().

{
  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;
  const struct GNUNET_OS_ProjectData *pd;

  (void) option;
  (void) value;
  if (NULL != about)
  {
    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 (NULL != opt[i].description)
  {
    if (opt[i].shortName == '\0')
      printf ("      ");
    else
      printf ("  -%c, ", opt[i].shortName);
    printf ("--%s", opt[i].name);
    slen = 8 + strlen (opt[i].name);
    if (NULL != opt[i].argumentHelp)
    {
      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 > (int) p; j--)
      {
        if (isspace ((unsigned char) trans[j]))
        {
          scp = GNUNET_malloc (j - p + 1);
          GNUNET_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);
      GNUNET_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++;
  }
  pd = GNUNET_OS_project_data_get ();
  printf ("Report bugs to %s.\n"
          "Home page: %s\n",
          pd->bug_email,
          pd->homepage);

  if (0 != pd->is_gnu)
    printf ("General help using GNU software: http://www.gnu.org/gethelp/\n");

  return GNUNET_NO;
}

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increment_value()

static int increment_value ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

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'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'unsigned int')
option	name of the option
value	not used (NULL)

Returns

GNUNET_OK

Definition at line 233 of file getopt_helpers.c.

References GNUNET_OK, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_increment_uint(), and GNUNET_GETOPT_option_verbose().

{
  unsigned int *val = scls;

  (void) ctx;
  (void) option;
  (void) value;
  (*val)++;
  return GNUNET_OK;
}

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set_one()

static int set_one ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

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'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'int')
option	name of the option
value	not used (NULL)

Returns

GNUNET_OK

Definition at line 312 of file getopt_helpers.c.

References GNUNET_OK, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_flag().

{
  int *val = scls;

  (void) ctx;
  (void) option;
  (void) value;
  *val = 1;
  return GNUNET_OK;
}

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set_string()

static int set_string ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

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 *', which will be allocated with the requested string.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'char *', which will be allocated)
option	name of the option
value	actual value of the option (a string)

Returns

GNUNET_OK

Definition at line 370 of file getopt_helpers.c.

References GNUNET_assert, GNUNET_free_non_null, GNUNET_OK, GNUNET_strdup, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_loglevel(), and GNUNET_GETOPT_option_string().

{
  char **val = scls;

  (void) ctx;
  (void) option;
  GNUNET_assert (NULL != value);
  GNUNET_free_non_null (*val);
  *val = GNUNET_strdup (value);
  return GNUNET_OK;
}

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set_filename()

static int set_filename ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Set an option of type 'char *' from the command line with filename expansion a la GNUNET_STRINGS_filename_expand().

Parameters

ctx	command line processing context
scls	additional closure (will point to the char *, which will be allocated)
option	name of the option
value	actual value of the option (a string)

Returns

GNUNET_OK

Definition at line 451 of file getopt_helpers.c.

References GNUNET_assert, GNUNET_free_non_null, GNUNET_OK, GNUNET_STRINGS_filename_expand(), and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_cfgfile(), GNUNET_GETOPT_option_filename(), and GNUNET_GETOPT_option_logfile().

{
  char **val = scls;

  (void) ctx;
  (void) option;
  GNUNET_assert (NULL != value);
  GNUNET_free_non_null (*val);
  *val = GNUNET_STRINGS_filename_expand (value);
  return GNUNET_OK;
}

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set_ulong()

static int set_ulong ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

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'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'unsigned long long')
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 556 of file getopt_helpers.c.

References _, dummy, GNUNET_OK, GNUNET_SYSERR, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_ulong().

{
  unsigned long long *val = scls;
  char dummy[2];

  (void) ctx;
  if (1 != sscanf (value, "%llu%1s", val, dummy))
  {
    fprintf (stderr,
             _ ("You must pass a number to the `%s' option.\n"),
             option);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

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set_timetravel_time()

static int set_timetravel_time ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Set an option of type 'struct GNUNET_TIME_Relative' 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 'struct GNUNET_TIME_Relative'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'struct GNUNET_TIME_Relative')
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 620 of file getopt_helpers.c.

References _, delta, GNUNET_OK, GNUNET_STRINGS_fancy_time_to_relative(), GNUNET_SYSERR, GNUNET_TIME_set_offset(), and GNUNET_TIME_Relative::rel_value_us.

Referenced by GNUNET_GETOPT_option_timetravel().

{
  long long delta;
  long long minus;
  struct GNUNET_TIME_Relative rt;

  (void) scls;
  (void) ctx;
  while (isspace (value[0]))
    value++;
  minus = 1;
  if (value[0] == '-')
  {
    minus = -1;
    value++;
  }
  else if (value[0] == '+')
  {
    value++;
  }
  if (GNUNET_OK !=
      GNUNET_STRINGS_fancy_time_to_relative (value,
                                             &rt))
  {
    fprintf (stderr,
             _ (
               "You must pass a relative time (optionally with sign) to the `%s' option.\n"),
             option);
    return GNUNET_SYSERR;
  }
  if (rt.rel_value_us > LLONG_MAX)
  {
    fprintf (stderr,
             _ ("Value given for time travel `%s' option is too big.\n"),
             option);
    return GNUNET_SYSERR;
  }
  delta = (long long) rt.rel_value_us;
  delta *= minus;
  GNUNET_TIME_set_offset (delta);
  return GNUNET_OK;
}

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set_relative_time()

static int set_relative_time ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Set an option of type 'struct GNUNET_TIME_Relative' 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 'struct GNUNET_TIME_Relative'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'struct GNUNET_TIME_Relative')
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 709 of file getopt_helpers.c.

References _, GNUNET_OK, GNUNET_STRINGS_fancy_time_to_relative(), and GNUNET_SYSERR.

Referenced by GNUNET_GETOPT_option_relative_time().

{
  struct GNUNET_TIME_Relative *val = scls;

  (void) ctx;
  if (GNUNET_OK != GNUNET_STRINGS_fancy_time_to_relative (value, val))
  {
    fprintf (stderr,
             _ ("You must pass relative time to the `%s' option.\n"),
             option);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

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set_absolute_time()

static int set_absolute_time ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Set an option of type 'struct GNUNET_TIME_Absolute' 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 'struct GNUNET_TIME_Absolute'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the struct GNUNET_TIME_Absolute)
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 774 of file getopt_helpers.c.

References _, GNUNET_OK, GNUNET_STRINGS_fancy_time_to_absolute(), and GNUNET_SYSERR.

Referenced by GNUNET_GETOPT_option_absolute_time().

{
  struct GNUNET_TIME_Absolute *val = scls;

  (void) ctx;
  if (GNUNET_OK != GNUNET_STRINGS_fancy_time_to_absolute (value, val))
  {
    fprintf (stderr,
             _ ("You must pass absolute time to the `%s' option.\n"),
             option);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

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set_uint()

static int set_uint ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

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'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'unsigned int')
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 839 of file getopt_helpers.c.

References _, dummy, GNUNET_OK, GNUNET_SYSERR, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_uint().

{
  unsigned int *val = scls;
  char dummy[2];

  (void) ctx;
  if ('-' == *value)
  {
    fprintf (stderr,
             _ (
               "Your input for the '%s' option has to be a non negative number\n"),
             option);
    return GNUNET_SYSERR;
  }
  if (1 != sscanf (value, "%u%1s", val, dummy))
  {
    fprintf (stderr,
             _ ("You must pass a number to the `%s' option.\n"),
             option);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

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set_uint16()

static int set_uint16 ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

Set an option of type 'uint16_t' 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 'uint16_t'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'unsigned int')
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 911 of file getopt_helpers.c.

References _, dummy, GNUNET_OK, GNUNET_SYSERR, and GNUNET_GETOPT_CommandLineOption::scls.

Referenced by GNUNET_GETOPT_option_uint16().

{
  uint16_t *val = scls;
  unsigned int v;
  char dummy[2];

  (void) ctx;
  if (1 != sscanf (value, "%u%1s", &v, dummy))
  {
    fprintf (stderr,
             _ ("You must pass a number to the `%s' option.\n"),
             option);
    return GNUNET_SYSERR;
  }
  if (v > UINT16_MAX)
  {
    fprintf (stderr,
             _ ("You must pass a number below %u to the `%s' option.\n"),
             (unsigned int) UINT16_MAX,
             option);
    return GNUNET_SYSERR;
  }
  *val = (uint16_t) v;
  return GNUNET_OK;
}

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set_base32()

static int set_base32 ( struct GNUNET_GETOPT_CommandLineProcessorContext *  ctx, void *  scls, const char *  option, const char *  value  )

static

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'.

Parameters

ctx	command line processing context
scls	additional closure (will point to the 'unsigned int')
option	name of the option
value	actual value of the option as a string.

Returns

GNUNET_OK if parsing the value worked

Definition at line 1002 of file getopt_helpers.c.

References _, GNUNET_OK, GNUNET_STRINGS_string_to_data(), GNUNET_SYSERR, Base32Context::val, and Base32Context::val_size.

Referenced by GNUNET_GETOPT_option_base32_fixed_size().

{
  struct Base32Context *bc = scls;

  (void) ctx;
  if (GNUNET_OK != GNUNET_STRINGS_string_to_data (value,
                                                  strlen (value),
                                                  bc->val,
                                                  bc->val_size))
  {
    fprintf (
      stderr,
      _ (
        "Argument `%s' malformed. Expected base32 (Crockford) encoded value.\n"),
      option);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

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free_bc()

static void free_bc ( void *  cls )

static

Helper function to clean up after GNUNET_GETOPT_option_base32_fixed_size.

Parameters

cls	value to GNUNET_free()

Definition at line 1033 of file getopt_helpers.c.

References GNUNET_free.

Referenced by GNUNET_GETOPT_option_base32_fixed_size().

{
  GNUNET_free (cls);
}

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