153 lines
3.6 KiB
C++
153 lines
3.6 KiB
C++
/*
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* ircd-ratbox: A slightly useful ircd.
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* getopt.c: Uses getopt to fetch the command line options.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include <ircd/ircd.h>
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#include "lgetopt.h"
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#define OPTCHAR '-'
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using argtype = decltype(lgetopt::argtype);
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void
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parseargs(int *argc, char * const **argv, struct lgetopt *opts)
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{
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int i;
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const char *progname = (*argv)[0];
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/* loop through each argument */
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for (;;)
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{
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int found = 0;
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(*argc)--;
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(*argv)++;
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if(*argc < 1)
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{
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return;
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}
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/* check if it *is* an arg.. */
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if((*argv)[0][0] != OPTCHAR)
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{
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return;
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}
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/* search through our argument list, and see if it matches */
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for (i = 0; opts[i].opt; i++)
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{
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if(!strcmp(opts[i].opt, &(*argv)[0][1]))
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{
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/* found our argument */
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found = 1;
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switch (opts[i].argtype)
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{
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case argtype::BOOL:
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*((bool *) opts[i].argloc) = true;
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break;
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case argtype::YESNO:
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*((int *) opts[i].argloc) = 1;
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break;
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case argtype::INTEGER:
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if(*argc < 2)
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{
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fprintf(stderr,
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"Error: option '%c%s' requires an argument\n",
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OPTCHAR, opts[i].opt);
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usage(progname, opts);
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}
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*((int *) opts[i].argloc) = atoi((*argv)[1]);
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(*argc)--;
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(*argv)++;
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break;
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case argtype::STRING:
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if(*argc < 2)
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{
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fprintf(stderr,
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"error: option '%c%s' requires an argument\n",
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OPTCHAR, opts[i].opt);
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usage(progname, opts);
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}
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*((char **) opts[i].argloc) =
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(char *)malloc(strlen((*argv)[1]) + 1);
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strcpy(*((char **) opts[i].argloc), (*argv)[1]);
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(*argc)--;
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(*argv)++;
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break;
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case argtype::STRINGS:
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if(*argc < 2)
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{
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fprintf(stderr,
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"error: option '%c%s' requires an argument\n",
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OPTCHAR, opts[i].opt);
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usage(progname, opts);
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}
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((std::vector<std::string> *)opts[i].argloc)->emplace_back((*argv)[1]);
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(*argc)--;
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(*argv)++;
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break;
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case argtype::USAGE:
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usage(progname, opts);
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/*NOTREACHED*/ default:
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fprintf(stderr,
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"Error: internal error in parseargs() at %s:%d\n",
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__FILE__, __LINE__);
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exit(EXIT_FAILURE);
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}
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}
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}
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if(!found)
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{
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fprintf(stderr, "error: unknown argument '%c%s'\n", OPTCHAR, &(*argv)[0][1]);
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usage(progname, opts);
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}
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}
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}
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void
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usage(const char *name, struct lgetopt *myopts)
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{
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int i = 0;
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fprintf(stderr, "Usage: %s [options]\n", name);
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fprintf(stderr, "Where valid options are:\n");
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for (i = 0; myopts[i].opt; i++)
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{
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fprintf(stderr, "\t%c%-10s %-20s%s\n", OPTCHAR,
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myopts[i].opt, (myopts[i].argtype == argtype::YESNO || myopts[i].argtype == argtype::BOOL
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|| myopts[i].argtype ==
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argtype::USAGE) ? "" : myopts[i].argtype ==
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argtype::INTEGER ? "<number>" : "<string>", myopts[i].desc);
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}
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exit(EXIT_FAILURE);
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}
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