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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 2001-2020 ircd-hybrid 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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|
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/*! \file getopt.c |
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* \brief Uses getopt to fetch the command line options. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "ircd_getopt.h" |
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#include "memory.h" |
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|
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#define OPTCHAR '-' |
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|
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|
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static void |
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usage(const char *name, const struct lgetopt *opts) |
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{ |
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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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|
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for (; opts->opt; ++opts) |
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fprintf(stderr, "\t%c%-10s %-20s%s\n", OPTCHAR, opts->opt, |
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(opts->argtype == BOOLEAN || opts->argtype == USAGE) ? "" : |
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opts->argtype == INTEGER ? "<number>" : "<string>", |
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opts->desc); |
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|
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exit(EXIT_FAILURE); |
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} |
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|
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void |
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parseargs(int *argc, char ***argv, struct lgetopt *opts) |
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{ |
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const char *progname = (*argv)[0]; |
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|
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/* Loop through each argument */ |
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while (true) |
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{ |
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bool found = false; |
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const char *opt = NULL; |
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|
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(*argc)--; |
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(*argv)++; |
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|
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if (*argc < 1 || (*argv)[0][0] != OPTCHAR) |
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return; |
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|
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opt = &(*argv)[0][1]; |
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|
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/* Search through our argument list, and see if it matches */ |
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for (unsigned int i = 0; opts[i].opt; ++i) |
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{ |
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if (strcmp(opts[i].opt, opt) == 0) |
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{ |
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/* Found our argument */ |
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found = true; |
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|
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switch (opts[i].argtype) |
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{ |
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case BOOLEAN: |
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*((bool *)opts[i].argloc) = true; |
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break; |
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|
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case INTEGER: |
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if (*argc < 2) |
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{ |
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fprintf(stderr, "Error: option '%c%s' requires an argument\n", |
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OPTCHAR, opts[i].opt); |
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usage((*argv)[0], opts); |
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} |
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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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|
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case STRING: |
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if (*argc < 2) |
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{ |
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fprintf(stderr, "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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|
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*((char **)opts[i].argloc) = xstrdup((*argv)[1]); |
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(*argc)--; |
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(*argv)++; |
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break; |
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|
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case USAGE: |
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usage(progname, opts); |
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/* NOTREACHED */ |
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|
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default: |
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fprintf(stderr, "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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|
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if (found == false) |
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{ |
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fprintf(stderr, "Error: unknown argument '%c%s'\n", |
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OPTCHAR, opt); |
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usage(progname, opts); |
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} |
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} |
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} |
