mirror of
https://github.com/matrix-construct/construct
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* To benefit from the precompiled-header (PCH) it MUST provide "the first C token." Advantages: Never worry about the include stack again. Remember, this means one less thing for random module developers, community people learning C++, and new developers to deal with. It should reduce the learning curve and barrier for participation. Disadvantages: Makes overall compilation a bit slower, especially without any additional work to improve it again. There are several opportunities, places where the PCH is probably being ignored, etc that can be addressed.
138 lines
3.1 KiB
C++
138 lines
3.1 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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namespace ircd {
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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::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);
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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);
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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::USAGE:
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usage(progname);
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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);
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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)
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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
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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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} // namespace ircd
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