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/*
This file is part of GNUnet.
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 GNUnet e.V.
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 3 of the License,
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
Affero General Public License for more details.
*/
/**
* @file fs/fs_getopt.c
* @brief helper functions for command-line argument processing
* @author Igor Wronsky, Christian Grothoff
*/
#include "platform.h"
#include "gnunet_fs_service.h"
#include "gnunet_getopt_lib.h"
#include "fs_api.h"
/* ******************** command-line option parsing API ******************** */
/**
* Command-line option parser function that allows the user
* to specify one or more '-k' options with keywords. Each
* specified keyword will be added to the URI. A pointer to
* the URI must be passed as the "scls" argument.
*
* @param ctx command line processor context
* @param scls must be of type "struct GNUNET_FS_Uri **"
* @param option name of the option (typically 'k')
* @param value command line argument given
* @return GNUNET_OK on success
*/
static int
getopt_set_keywords (struct GNUNET_GETOPT_CommandLineProcessorContext
*ctx, void *scls, const char *option,
const char *value)
{
struct GNUNET_FS_Uri **uri = scls;
struct GNUNET_FS_Uri *u = *uri;
char *val;
size_t slen;
if (u == NULL)
{
u = GNUNET_new (struct GNUNET_FS_Uri);
*uri = u;
u->type = GNUNET_FS_URI_KSK;
u->data.ksk.keywordCount = 0;
u->data.ksk.keywords = NULL;
}
else
{
GNUNET_assert (u->type == GNUNET_FS_URI_KSK);
}
slen = strlen (value);
if (slen == 0)
return GNUNET_SYSERR; /* cannot be empty */
if (value[0] == '+')
{
/* simply preserve the "mandatory" flag */
if (slen < 2)
return GNUNET_SYSERR; /* empty keywords not allowed */
if ((value[1] == '"') && (slen > 3) && (value[slen - 1] == '"'))
{
/* remove the quotes, keep the '+' */
val = GNUNET_malloc (slen - 1);
val[0] = '+';
GNUNET_memcpy (&val[1], &value[2], slen - 3);
val[slen - 2] = '\0';
}
else
{
/* no quotes, just keep the '+' */
val = GNUNET_strdup (value);
}
}
else
{
if ((value[0] == '"') && (slen > 2) && (value[slen - 1] == '"'))
{
/* remove the quotes, add a space */
val = GNUNET_malloc (slen);
val[0] = ' ';
GNUNET_memcpy (&val[1], &value[1], slen - 2);
val[slen - 1] = '\0';
}
else
{
/* add a space to indicate "not mandatory" */
val = GNUNET_malloc (slen + 2);
strcpy (val, " ");
strcat (val, value);
}
}
GNUNET_array_append (u->data.ksk.keywords, u->data.ksk.keywordCount, val);
return GNUNET_OK;
}
/**
* Allow user to specify keywords.
*
* @param shortName short name of the option
* @param name long name of the option
* @param argumentHelp help text for the option argument
* @param description long help text for the option
* @param[out] topKeywords set to the desired value
*/
struct GNUNET_GETOPT_CommandLineOption
GNUNET_FS_GETOPT_KEYWORDS (char shortName,
const char *name,
const char *argumentHelp,
const char *description,
struct GNUNET_FS_Uri **topKeywords)
{
struct GNUNET_GETOPT_CommandLineOption clo = {
.shortName = shortName,
.name = name,
.argumentHelp = argumentHelp,
.description = description,
.require_argument = 1,
.processor = &getopt_set_keywords,
.scls = (void *) topKeywords
};
return clo;
}
/**
* Command-line option parser function that allows the user to specify
* one or more '-m' options with metadata. Each specified entry of
* the form "type=value" will be added to the metadata. A pointer to
* the metadata must be passed as the "scls" argument.
*
* @param ctx command line processor context
* @param scls must be of type "struct GNUNET_MetaData **"
* @param option name of the option (typically 'k')
* @param value command line argument given
* @return #GNUNET_OK on success
*/
static int
getopt_set_metadata (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
void *scls,
const char *option,
const char *value)
{
struct GNUNET_CONTAINER_MetaData **mm = scls;
#if HAVE_EXTRACTOR_H && HAVE_LIBEXTRACTOR
enum EXTRACTOR_MetaType type;
const char *typename;
const char *typename_i18n;
#endif
struct GNUNET_CONTAINER_MetaData *meta;
char *tmp;
meta = *mm;
if (meta == NULL)
{
meta = GNUNET_CONTAINER_meta_data_create ();
*mm = meta;
}
/* Use GNUNET_STRINGS_get_utf8_args() in main() to acquire utf-8-encoded
* commandline arguments, so that the following line is not needed.
*/
/*tmp = GNUNET_STRINGS_to_utf8 (value, strlen (value), locale_charset ());*/
tmp = GNUNET_strdup (value);
#if HAVE_EXTRACTOR_H && HAVE_LIBEXTRACTOR
type = EXTRACTOR_metatype_get_max ();
while (type > 0)
{
type--;
typename = EXTRACTOR_metatype_to_string (type);
typename_i18n = dgettext (LIBEXTRACTOR_GETTEXT_DOMAIN, typename);
if ((strlen (tmp) >= strlen (typename) + 1) &&
(tmp[strlen (typename)] == ':') &&
(0 == strncmp (typename, tmp, strlen (typename))))
{
GNUNET_CONTAINER_meta_data_insert (meta, "<gnunet>", type,
EXTRACTOR_METAFORMAT_UTF8,
"text/plain",
&tmp[strlen (typename) + 1],
strlen (&tmp[strlen (typename) + 1]) +
1);
GNUNET_free (tmp);
tmp = NULL;
break;
}
if ((strlen (tmp) >= strlen (typename_i18n) + 1) &&
(tmp[strlen (typename_i18n)] == ':') &&
(0 == strncmp (typename_i18n, tmp, strlen (typename_i18n))))
{
GNUNET_CONTAINER_meta_data_insert (meta, "<gnunet>", type,
EXTRACTOR_METAFORMAT_UTF8,
"text/plain",
&tmp[strlen (typename_i18n) + 1],
strlen (&tmp
[strlen (typename_i18n) + 1]) +
1);
GNUNET_free (tmp);
tmp = NULL;
break;
}
}
#endif
if (NULL != tmp)
{
GNUNET_CONTAINER_meta_data_insert (meta, "<gnunet>",
EXTRACTOR_METATYPE_UNKNOWN,
EXTRACTOR_METAFORMAT_UTF8, "text/plain",
tmp, strlen (tmp) + 1);
GNUNET_free (tmp);
printf (_
("Unknown metadata type in metadata option `%s'. Using metadata type `unknown' instead.\n"),
value);
}
return GNUNET_OK;
}
/**
* Allow user to specify metadata.
*
* @param shortName short name of the option
* @param name long name of the option
* @param argumentHelp help text for the option argument
* @param description long help text for the option
* @param[out] metadata set to the desired value
*/
struct GNUNET_GETOPT_CommandLineOption
GNUNET_FS_GETOPT_METADATA (char shortName,
const char *name,
const char *argumentHelp,
const char *description,
struct GNUNET_CONTAINER_MetaData **meta)
{
struct GNUNET_GETOPT_CommandLineOption clo = {
.shortName = shortName,
.name = name,
.argumentHelp = argumentHelp,
.description = description,
.require_argument = 1,
.processor = &getopt_set_metadata,
.scls = (void *) meta
};
return clo;
}
/* end of fs_getopt.c */
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