| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
| 3 |
* |
| 4 |
* Copyright (c) 2001-2014 ircd-hybrid development team |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 19 |
* USA |
| 20 |
*/ |
| 21 |
|
| 22 |
/*! \file getopt.c |
| 23 |
* \brief Uses getopt to fetch the command line options. |
| 24 |
* \version $Id$ |
| 25 |
*/ |
| 26 |
|
| 27 |
#include "stdinc.h" |
| 28 |
#include "ircd_getopt.h" |
| 29 |
|
| 30 |
#define OPTCHAR '-' |
| 31 |
|
| 32 |
|
| 33 |
static void |
| 34 |
usage(const char *name, const struct lgetopt *opts) |
| 35 |
{ |
| 36 |
unsigned int i; |
| 37 |
|
| 38 |
fprintf(stderr, "Usage: %s [options]\n", name); |
| 39 |
fprintf(stderr, "Where valid options are:\n"); |
| 40 |
|
| 41 |
for (i = 0; opts[i].opt; ++i) |
| 42 |
fprintf(stderr, "\t%c%-10s %-20s%s\n", OPTCHAR, opts[i].opt, |
| 43 |
(opts[i].argtype == YESNO || opts[i].argtype == USAGE) ? "" : |
| 44 |
opts[i].argtype == INTEGER ? "<number>" : "<string>", |
| 45 |
opts[i].desc); |
| 46 |
|
| 47 |
exit(EXIT_FAILURE); |
| 48 |
} |
| 49 |
|
| 50 |
void |
| 51 |
parseargs(int *argc, char ***argv, struct lgetopt *opts) |
| 52 |
{ |
| 53 |
const char *progname = (*argv)[0]; |
| 54 |
|
| 55 |
/* Loop through each argument */ |
| 56 |
while (1) |
| 57 |
{ |
| 58 |
int found = 0; |
| 59 |
|
| 60 |
(*argc)--; |
| 61 |
(*argv)++; |
| 62 |
|
| 63 |
if (*argc < 1 || (*argv)[0][0] != OPTCHAR) |
| 64 |
return; |
| 65 |
|
| 66 |
(*argv)[0]++; |
| 67 |
|
| 68 |
/* Search through our argument list, and see if it matches */ |
| 69 |
for (unsigned int i = 0; opts[i].opt; ++i) |
| 70 |
{ |
| 71 |
if (!strcmp(opts[i].opt, (*argv)[0])) |
| 72 |
{ |
| 73 |
/* Found our argument */ |
| 74 |
found = 1; |
| 75 |
|
| 76 |
switch (opts[i].argtype) |
| 77 |
{ |
| 78 |
case YESNO: |
| 79 |
*((int *)opts[i].argloc) = 1; |
| 80 |
break; |
| 81 |
|
| 82 |
case INTEGER: |
| 83 |
if (*argc < 2) |
| 84 |
{ |
| 85 |
fprintf(stderr, "Error: option '%c%s' requires an argument\n", |
| 86 |
OPTCHAR, opts[i].opt); |
| 87 |
usage((*argv)[0], opts); |
| 88 |
} |
| 89 |
|
| 90 |
*((int *)opts[i].argloc) = atoi((*argv)[1]); |
| 91 |
(*argc)--; |
| 92 |
(*argv)++; |
| 93 |
break; |
| 94 |
|
| 95 |
case STRING: |
| 96 |
if (*argc < 2) |
| 97 |
{ |
| 98 |
fprintf(stderr, "error: option '%c%s' requires an argument\n", |
| 99 |
OPTCHAR, opts[i].opt); |
| 100 |
usage(progname, opts); |
| 101 |
} |
| 102 |
|
| 103 |
*((char**)opts[i].argloc) = malloc(strlen((*argv)[1]) + 1); |
| 104 |
strcpy(*((char**)opts[i].argloc), (*argv)[1]); |
| 105 |
(*argc)--; |
| 106 |
(*argv)++; |
| 107 |
break; |
| 108 |
|
| 109 |
case USAGE: |
| 110 |
usage(progname, opts); |
| 111 |
/* NOTREACHED */ |
| 112 |
|
| 113 |
default: |
| 114 |
fprintf(stderr, "Error: internal error in parseargs() at %s:%d\n", |
| 115 |
__FILE__, __LINE__); |
| 116 |
exit(EXIT_FAILURE); |
| 117 |
} |
| 118 |
} |
| 119 |
} |
| 120 |
|
| 121 |
if (!found) |
| 122 |
{ |
| 123 |
fprintf(stderr, "error: unknown argument '%c%s'\n", |
| 124 |
OPTCHAR, (*argv)[0]); |
| 125 |
usage(progname, opts); |
| 126 |
} |
| 127 |
} |
| 128 |
} |
