init - 初始化项目

3rdparty/libjasper/jas_getopt.c

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+/*
+ * 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 1.2 2008-05-26 09:40:52 vp153 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;
+}