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/*---------------------------------------------------------------------------*/
/*options.h*/
/*---------------------------------------------------------------------------*/
/*Definitions for parsing the command line switches*/
/*---------------------------------------------------------------------------*/
/*Based on the code of unionfs translator.*/
/*---------------------------------------------------------------------------*/
/*Copyright (C) 2001, 2002, 2005, 2008, 2009 Free Software Foundation,
Inc. Written by Sergiu Ivanov <unlimitedscolobb@gmail.com>.
This program 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 of the
License, or * (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.*/
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
#define _GNU_SOURCE 1
/*---------------------------------------------------------------------------*/
#include <argp.h>
#include <error.h>
/*---------------------------------------------------------------------------*/
#include "debug.h"
#include "options.h"
#include "ncache.h"
#include "node.h"
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*--------Macros-------------------------------------------------------------*/
/*Short documentation for argp*/
#define ARGS_DOC "DIR"
#define DOC "Provides namespace-based translator selection."\
" You can dynamically obtain the file 'file' translated by translator"\
" 'x' using the syntax: 'file,,x'."
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*--------Forward Declarations-----------------------------------------------*/
/*Argp parser function for the common options*/
static
error_t
argp_parse_common_options (int key, char *arg, struct argp_state *state);
/*---------------------------------------------------------------------------*/
/*Argp parser function for the startup options*/
static
error_t
argp_parse_startup_options (int key, char *arg, struct argp_state *state);
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*--------Global Variables---------------------------------------------------*/
/*This variable is set to a non-zero value after the parsing of starup options
is finished*/
/*Whenever the argument parser is later called to modify the
options of the root node will be initialized accordingly directly
by the parser*/
static int parsing_startup_options_finished;
/*---------------------------------------------------------------------------*/
/*Argp options common to both the runtime and the startup parser*/
static const struct argp_option argp_common_options[] = {
/*{OPT_LONG_CACHE_SIZE, OPT_CACHE_SIZE, "SIZE", 0,
"The maximal number of nodes in the node cache"} */
{0}
};
/*---------------------------------------------------------------------------*/
/*Argp options only meaningful for startup parsing*/
static const struct argp_option argp_startup_options[] = {
{0}
};
/*---------------------------------------------------------------------------*/
/*Argp parser for only the common options*/
static const struct argp argp_parser_common_options =
{ argp_common_options, argp_parse_common_options, 0, 0, 0 };
/*---------------------------------------------------------------------------*/
/*Argp parser for only the startup options*/
static const struct argp argp_parser_startup_options =
{ argp_startup_options, argp_parse_startup_options, 0, 0, 0 };
/*---------------------------------------------------------------------------*/
/*The list of children parsers for runtime arguments*/
static const struct argp_child argp_children_runtime[] = {
{&argp_parser_common_options},
{&netfs_std_runtime_argp},
{0}
};
/*---------------------------------------------------------------------------*/
/*The list of children parsers for startup arguments*/
static const struct argp_child argp_children_startup[] = {
{&argp_parser_startup_options},
{&argp_parser_common_options},
{&netfs_std_startup_argp},
{0}
};
/*---------------------------------------------------------------------------*/
/*The version of the server for argp*/
const char *argp_program_version = "0.0";
/*---------------------------------------------------------------------------*/
/*The arpg parser for runtime arguments*/
struct argp argp_runtime = { 0, 0, 0, 0, argp_children_runtime };
/*---------------------------------------------------------------------------*/
/*The argp parser for startup arguments*/
struct argp argp_startup = { 0, 0, ARGS_DOC, DOC, argp_children_startup };
/*---------------------------------------------------------------------------*/
/*The directory to mirror*/
char *dir = NULL;
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*--------Functions----------------------------------------------------------*/
/*Argp parser function for the common options*/
static
error_t
argp_parse_common_options (int key, char *arg, struct argp_state *state)
{
error_t err = 0;
/*Go through the possible options */
switch (key)
{
/*case OPT_CACHE_SIZE:
{ */
/*store the new cache-size */
/*ncache_size = strtol(arg, NULL, 10);
break;
} */
case ARGP_KEY_ARG: /*the directory to mirror */
{
/*try to duplicate the directory name */
dir = strdup (arg);
if (!dir)
error (EXIT_FAILURE, ENOMEM, "argp_parse_common_options: "
"Could not strdup the directory");
/*fill all trailing spaces with 0 */
int i = strlen (dir) - 1;
/*for(i = strlen(dir) - 1; (i >= 0) && (dir[i] == ' ');
dir[i--] = 0); */
/*the original filename may contain spaces */
/*If the last non blank symbol is a '/' and it's not the only one */
if ((dir[i] == '/') && (i != 0))
/*put 0 instead */
dir[i] = 0;
LOG_MSG ("argp_parse_common_options: Mirroring the directory %s.",
dir);
break;
}
case ARGP_KEY_END:
{
/*If parsing of startup options has not finished */
if (!parsing_startup_options_finished)
{
/*reset the cache */
ncache_reset ();
/*If the directory has not been specified */
if (!dir)
{
/*assume the directory to be the home directory */
;
/*FIXME: The default directory is /var/tmp */
dir = "/var/tmp";
}
/*set the flag that the startup options have already been parsed */
parsing_startup_options_finished = 1;
}
else
{
/*TODO: Take care of runtime calls modifying the property*/
}
}
/*If the option could not be recognized */
default:
{
/*set the error code */
err = ARGP_ERR_UNKNOWN;
}
}
/*Return the result */
return err;
} /*argp_parse_common_options */
/*---------------------------------------------------------------------------*/
/*Argp parser function for the startup options*/
static
error_t
argp_parse_startup_options (int key, char *arg, struct argp_state *state)
{
/*Do nothing in a beautiful way */
error_t err = 0;
switch (key)
{
default:
{
err = ARGP_ERR_UNKNOWN;
break;
}
}
return err;
} /*argp_parse_startup_options */
/*---------------------------------------------------------------------------*/
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