diff options
Diffstat (limited to 'src/libjasper/base/jas_getopt.c')
| -rw-r--r-- | src/libjasper/base/jas_getopt.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/libjasper/base/jas_getopt.c b/src/libjasper/base/jas_getopt.c new file mode 100644 index 0000000..efb472e --- /dev/null +++ b/src/libjasper/base/jas_getopt.c @@ -0,0 +1,168 @@ +/* + * Copyright (c) 1999-2000, Image Power, Inc. and the University of + * British Columbia. + * Copyright (c) 2001-2002 Michael David Adams. + * All rights reserved. + */ + +/* __START_OF_JASPER_LICENSE__ + * + * JasPer License Version 2.0 + * + * Copyright (c) 2001-2006 Michael David Adams + * Copyright (c) 1999-2000 Image Power, Inc. + * Copyright (c) 1999-2000 The University of British Columbia + * + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person (the + * "User") obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, and/or sell copies of the Software, and to permit + * persons to whom the Software is furnished to do so, subject to the + * following conditions: + * + * 1. The above copyright notices and this permission notice (which + * includes the disclaimer below) shall be included in all copies or + * substantial portions of the Software. + * + * 2. The name of a copyright holder shall not be used to endorse or + * promote products derived from the Software without specific prior + * written permission. + * + * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS + * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER + * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS + * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL + * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING + * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION + * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE + * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE + * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. + * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS + * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL + * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS + * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE + * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE + * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL + * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, + * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL + * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH + * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, + * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH + * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY + * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. + * + * __END_OF_JASPER_LICENSE__ + */ + +/* + * Command Line Option Parsing Library + * + * $Id: jas_getopt.c,v 1.1 2008/10/17 06:14:59 scuri Exp $ + */ + +/******************************************************************************\ +* Includes. +\******************************************************************************/ + +#include <stdio.h> +#include <string.h> + +#include "jasper/jas_getopt.h" +#include "jasper/jas_math.h" + +/******************************************************************************\ +* Global data. +\******************************************************************************/ + +int jas_optind = 0; +int jas_opterr = 1; +char *jas_optarg = 0; + +/******************************************************************************\ +* Code. +\******************************************************************************/ + +static jas_opt_t *jas_optlookup(jas_opt_t *opts, char *name) +{ + jas_opt_t *opt; + + for (opt = opts; opt->id >= 0 && opt->name; ++opt) { + if (!strcmp(opt->name, name)) { + return opt; + } + } + return 0; +} + +int jas_getopt(int argc, char **argv, jas_opt_t *opts) +{ + char *cp; + int id; + int hasarg; + jas_opt_t *opt; + char *s; + + if (!jas_optind) { + jas_optind = JAS_MIN(1, argc); + } + while (jas_optind < argc) { + s = cp = argv[jas_optind]; + if (*cp == '-') { + /* We are processing an option. */ + ++jas_optind; + if (*++cp == '-') { + /* We are processing a long option. */ + ++cp; + if (*cp == '\0') { + /* This is the end of the options. */ + return JAS_GETOPT_EOF; + } + if (!(opt = jas_optlookup(opts, cp))) { + if (jas_opterr) { + jas_eprintf("unknown long option %s\n", s); + } + return JAS_GETOPT_ERR; + } + hasarg = (opt->flags & JAS_OPT_HASARG) != 0; + id = opt->id; + } else { + /* We are processing a short option. */ + if (strlen(cp) != 1 || + !(opt = jas_optlookup(opts, cp))) { + if (jas_opterr) { + jas_eprintf("unknown short option %s\n", s); + } + return JAS_GETOPT_ERR; + } + hasarg = (opt->flags & JAS_OPT_HASARG) != 0; + id = opt->id; + } + if (hasarg) { + /* The option has an argument. */ + if (jas_optind >= argc) { + if (jas_opterr) { + jas_eprintf("missing argument for option %s\n", s); + } + return JAS_GETOPT_ERR; + } + jas_optarg = argv[jas_optind]; + ++jas_optind; + } else { + /* The option does not have an argument. */ + jas_optarg = 0; + } + return id; + } else { + /* We are not processing an option. */ + return JAS_GETOPT_EOF; + } + } + return JAS_GETOPT_EOF; +} |