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|
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "../pervasive.h"
#include "error.h"
#include "parameters.h"
static void load_default_parameters
(
struct ZoO_parameters param [const restrict static 1]
)
{
param->data_filename = ZoO_DEFAULT_DATA_FILENAME;
param->irc_server_addr = ZoO_DEFAULT_IRC_SERVER_ADDR;
param->irc_server_port = ZoO_DEFAULT_IRC_SERVER_PORT;
param->irc_server_channel = ZoO_DEFAULT_IRC_SERVER_CHANNEL;
param->irc_username = ZoO_DEFAULT_IRC_USERNAME;
param->irc_realname = ZoO_DEFAULT_IRC_REALNAME;
param->reply_rate = ZoO_DEFAULT_REPLY_RATE;
param->aliases_count = 0;
param->aliases = NULL;
}
static void print_help (const char exec [const restrict static 1])
{
printf
(
"Usage: %s [option_1 option_2 ...] NICKNAME [ALIAS_1 ALIAS_2 ...] \n"
"NICKNAME is used as the IRC nickname value.\n"
"If NICKNAME or any ALIAS is found in an event, the program will reply.\n"
"\nAvailable options:\n"
" [--data-filename | -df] FILENAME\n"
" Learn content from FILENAME before connecting.\n"
" Default: %s.\n"
" [--irc-server-addr | -isa] IRC_SERVER_ADDR\n"
" Connect to this server address.\n"
" Default: %s.\n"
" [--irc-server-port | -isp] IRC_SERVER_PORT\n"
" Connect to this server port.\n"
" Default: %s.\n"
" [--irc-server-channel | -isc] IRC_SERVER_CHANNEL\n"
" Connect to this server's channel.\n"
" Default: %s.\n"
" [--irc-username | -iu] USERNAME\n"
" Connect using this as 'username' (shown in WHOIS).\n"
" Default: %s.\n"
" [--irc-realname | -ir] REALNAME\n"
" Connect using this as 'realname' (shown in WHOIS).\n"
" Default: %s.\n"
" [--reply-rate | -rr] REPLY_RATE\n"
" Chance to reply to an event (integer, range [0, 100]).\n"
" Default: %d.\n",
exec,
ZoO_DEFAULT_DATA_FILENAME,
ZoO_DEFAULT_IRC_SERVER_ADDR,
ZoO_DEFAULT_IRC_SERVER_PORT,
ZoO_DEFAULT_IRC_SERVER_CHANNEL,
ZoO_DEFAULT_IRC_USERNAME,
ZoO_DEFAULT_IRC_REALNAME,
ZoO_DEFAULT_REPLY_RATE
);
}
static int parse_string_arg
(
const char * restrict dest [const restrict static 1],
int const i,
const char * restrict argv [const restrict static 1],
int const argc
)
{
if (i == argc)
{
ZoO_FATAL
(
"Missing value for parameter '%s'.",
/* Safe: i > 1 */
argv[i - 1]
);
return -1;
}
*dest = argv[i];
return 0;
}
static int parse_integer_arg
(
int dest [const restrict static 1],
int const i,
const char * argv [const restrict static 1],
int const argc,
int const min_val,
int const max_val
)
{
long int result;
char * endptr;
const int old_errno = errno;
if (i == argc)
{
ZoO_FATAL
(
"Missing value for parameter '%s'.",
/* Safe: i > 1 */
argv[i - 1]
);
return -1;
}
errno = 0;
result = strtol(argv[i], &endptr, 10);
if
(
(errno != 0)
|| ((*endptr) == '\n')
|| (result < min_val)
|| (result > max_val)
)
{
ZoO_FATAL
(
"Invalid or missing value for parameter '%s', accepted range is "
"[%d, %d] (integer).",
/* Safe: i > 1 */
argv[i - 1],
min_val,
max_val
);
errno = old_errno;
return -1;
}
*dest = (int) result;
errno = old_errno;
return 0;
}
int ZoO_parameters_initialize
(
struct ZoO_parameters param [const restrict static 1],
int const argc,
const char * argv [const restrict static argc]
)
{
int i;
load_default_parameters(param);
for (i = 1; i < argc; ++i)
{
if
(
(strcmp(argv[i], "--data-filename") == 0)
|| (strcmp(argv[i], "-df") == 0)
)
{
i += 1;
if
(
parse_string_arg
(
&(param->data_filename),
i,
argv,
argc
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--irc-server-addr") == 0)
|| (strcmp(argv[i], "-isa") == 0)
)
{
i += 1;
if
(
parse_string_arg
(
&(param->irc_server_addr),
i,
argv,
argc
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--irc-server-port") == 0)
|| (strcmp(argv[i], "-isp") == 0)
)
{
i += 1;
if
(
parse_string_arg
(
&(param->irc_server_port),
i,
argv,
argc
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--irc-server-channel") == 0)
|| (strcmp(argv[i], "-isc") == 0)
)
{
i += 1;
if
(
parse_string_arg
(
&(param->irc_server_channel),
i,
argv,
argc
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--irc-username") == 0)
|| (strcmp(argv[i], "-iu") == 0)
)
{
i += 1;
if
(
parse_string_arg
(
&(param->irc_username),
i,
argv,
argc
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--irc-realname") == 0)
|| (strcmp(argv[i], "-in") == 0)
)
{
i += 1;
if
(
parse_string_arg
(
&(param->irc_realname),
i,
argv,
argc
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--reply-rate") == 0)
|| (strcmp(argv[i], "-rr") == 0)
)
{
i += 1;
if
(
parse_integer_arg
(
&(param->reply_rate),
i,
argv,
argc,
0,
100
) < 0
)
{
return -1;
}
}
else if
(
(strcmp(argv[i], "--help") == 0)
|| (strcmp(argv[i], "-h") == 0)
)
{
print_help(argv[0]);
return 0;
}
else
{
break;
}
}
if (i == argc)
{
ZoO_S_FATAL("Missing argument: NICKNAME");
print_help(argv[0]);
return -1;
}
param->aliases_count = (argc - i);
param->aliases = (argv + i);
return 1;
}
|
