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Replaced Free Getopt with getopt_port.

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Camilla Berglund ago%!(EXTRA string=11 years)
parent af78508488
commit 18c635f474
3 changed files with 265 additions and 308 deletions
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  1. 2
      README.md
  2. 473
      deps/getopt.c
  3. 98
      deps/getopt.h

2
README.md
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@ -38,7 +38,7 @@ The following dependencies are needed by GLFW:
The following dependencies are needed by the examples and test programs:
- [Free Getopt](http://freegetopt.sourceforge.net/) for getopt
- [getopt\_port](https://github.com/kimgr/getopt_port/) for getopt
- [TinyCThread](https://gitorious.org/tinythread/tinycthread/) for threading
- An OpenGL loader generated by [glad](https://github.com/Dav1dde/glad)

473
deps/getopt.c vendored
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@ -1,267 +1,230 @@
/*****************************************************************************
* getopt.c - competent and free getopt library.
* $Header: /cvsroot/freegetopt/freegetopt/getopt.c,v 1.2 2003/10/26 03:10:20 vindaci Exp $
*
* Copyright (c)2002-2003 Mark K. Kim
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the original author of this software nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif
/* Copyright (c) 2012, Kim Gräsman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Kim Gräsman nor the names of contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL KIM GRÄSMAN BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "getopt.h"
/* 2013-01-06 Camilla Berglund <elmindreda@elmindreda.org>
*
* Only define _CRT_SECURE_NO_WARNINGS if not already defined.
*/
/* 2012-08-12 Lambert Clara <lambert.clara@yahoo.fr>
*
* Constify third argument of getopt.
*/
/* 2011-07-27 Camilla Berglund <elmindreda@elmindreda.org>
*
* Added _CRT_SECURE_NO_WARNINGS macro.
*/
/* 2009-10-12 Camilla Berglund <elmindreda@elmindreda.org>
*
* Removed unused global static variable 'ID'.
*/
#include <stddef.h>
#include <string.h>
char* optarg = NULL;
int optind = 0;
int opterr = 1;
int optopt = '?';
static char** prev_argv = NULL; /* Keep a copy of argv and argc to */
static int prev_argc = 0; /* tell if getopt params change */
static int argv_index = 0; /* Option we're checking */
static int argv_index2 = 0; /* Option argument we're checking */
static int opt_offset = 0; /* Index into compounded "-option" */
static int dashdash = 0; /* True if "--" option reached */
static int nonopt = 0; /* How many nonopts we've found */
static void increment_index()
{
/* Move onto the next option */
if(argv_index < argv_index2)
{
while(prev_argv[++argv_index] && prev_argv[argv_index][0] != '-'
&& argv_index < argv_index2+1);
}
else argv_index++;
opt_offset = 1;
}
const int no_argument = 0;
const int required_argument = 1;
const int optional_argument = 2;
char* optarg;
int optopt;
/* The variable optind [...] shall be initialized to 1 by the system. */
int optind = 1;
int opterr;
/*
* Permutes argv[] so that the argument currently being processed is moved
* to the end.
*/
static int permute_argv_once()
{
/* Movability check */
if(argv_index + nonopt >= prev_argc) return 1;
/* Move the current option to the end, bring the others to front */
else
{
char* tmp = prev_argv[argv_index];
/* Move the data */
memmove(&prev_argv[argv_index], &prev_argv[argv_index+1],
sizeof(char**) * (prev_argc - argv_index - 1));
prev_argv[prev_argc - 1] = tmp;
nonopt++;
return 0;
}
}
static char* optcursor = NULL;
/* Implemented based on [1] and [2] for optional arguments.
optopt is handled FreeBSD-style, per [3].
Other GNU and FreeBSD extensions are purely accidental.
int getopt(int argc, char** argv, const char* optstr)
{
int c = 0;
/* If we have new argv, reinitialize */
if(prev_argv != argv || prev_argc != argc)
{
/* Initialize variables */
prev_argv = argv;
prev_argc = argc;
argv_index = 1;
argv_index2 = 1;
opt_offset = 1;
dashdash = 0;
nonopt = 0;
}
/* Jump point in case we want to ignore the current argv_index */
getopt_top:
/* Misc. initializations */
optarg = NULL;
/* Dash-dash check */
if(argv[argv_index] && !strcmp(argv[argv_index], "--"))
{
dashdash = 1;
increment_index();
}
/* If we're at the end of argv, that's it. */
if(argv[argv_index] == NULL)
{
c = -1;
}
/* Are we looking at a string? Single dash is also a string */
else if(dashdash || argv[argv_index][0] != '-' || !strcmp(argv[argv_index], "-"))
{
/* If we want a string... */
if(optstr[0] == '-')
{
c = 1;
optarg = argv[argv_index];
increment_index();
}
/* If we really don't want it (we're in POSIX mode), we're done */
else if(optstr[0] == '+' || getenv("POSIXLY_CORRECT"))
{
c = -1;
/* Everything else is a non-opt argument */
nonopt = argc - argv_index;
}
/* If we mildly don't want it, then move it back */
else
{
if(!permute_argv_once()) goto getopt_top;
else c = -1;
}
}
/* Otherwise we're looking at an option */
else
{
char* opt_ptr = NULL;
/* Grab the option */
c = argv[argv_index][opt_offset++];
/* Is the option in the optstr? */
if(optstr[0] == '-') opt_ptr = strchr(optstr+1, c);
else opt_ptr = strchr(optstr, c);
/* Invalid argument */
if(!opt_ptr)
{
if(opterr)
{
fprintf(stderr, "%s: invalid option -- %c\n", argv[0], c);
}
optopt = c;
c = '?';
/* Move onto the next option */
increment_index();
}
/* Option takes argument */
else if(opt_ptr[1] == ':')
{
/* ie, -oARGUMENT, -xxxoARGUMENT, etc. */
if(argv[argv_index][opt_offset] != '\0')
{
optarg = &argv[argv_index][opt_offset];
increment_index();
}
/* ie, -o ARGUMENT (only if it's a required argument) */
else if(opt_ptr[2] != ':')
{
/* One of those "you're not expected to understand this" moment */
if(argv_index2 < argv_index) argv_index2 = argv_index;
while(argv[++argv_index2] && argv[argv_index2][0] == '-');
optarg = argv[argv_index2];
/* Don't cross into the non-option argument list */
if(argv_index2 + nonopt >= prev_argc) optarg = NULL;
/* Move onto the next option */
increment_index();
}
else
{
/* Move onto the next option */
increment_index();
}
/* In case we got no argument for an option with required argument */
if(optarg == NULL && opt_ptr[2] != ':')
{
optopt = c;
c = '?';
if(opterr)
{
fprintf(stderr,"%s: option requires an argument -- %c\n",
argv[0], optopt);
}
}
}
/* Option does not take argument */
else
{
/* Next argv_index */
if(argv[argv_index][opt_offset] == '\0')
{
increment_index();
}
}
}
/* Calculate optind */
if(c == -1)
{
optind = argc - nonopt;
}
else
{
optind = argv_index;
}
return c;
[1] http://pubs.opengroup.org/onlinepubs/000095399/functions/getopt.html
[2] http://www.kernel.org/doc/man-pages/online/pages/man3/getopt.3.html
[3] http://www.freebsd.org/cgi/man.cgi?query=getopt&sektion=3&manpath=FreeBSD+9.0-RELEASE
*/
int getopt(int argc, char* const argv[], const char* optstring) {
int optchar = -1;
const char* optdecl = NULL;
optarg = NULL;
opterr = 0;
optopt = 0;
/* Unspecified, but we need it to avoid overrunning the argv bounds. */
if (optind >= argc)
goto no_more_optchars;
/* If, when getopt() is called argv[optind] is a null pointer, getopt()
shall return -1 without changing optind. */
if (argv[optind] == NULL)
goto no_more_optchars;
/* If, when getopt() is called *argv[optind] is not the character '-',
getopt() shall return -1 without changing optind. */
if (*argv[optind] != '-')
goto no_more_optchars;
/* If, when getopt() is called argv[optind] points to the string "-",
getopt() shall return -1 without changing optind. */
if (strcmp(argv[optind], "-") == 0)
goto no_more_optchars;
/* If, when getopt() is called argv[optind] points to the string "--",
getopt() shall return -1 after incrementing optind. */
if (strcmp(argv[optind], "--") == 0) {
++optind;
goto no_more_optchars;
}
if (optcursor == NULL || *optcursor == '\0')
optcursor = argv[optind] + 1;
optchar = *optcursor;
/* FreeBSD: The variable optopt saves the last known option character
returned by getopt(). */
optopt = optchar;
/* The getopt() function shall return the next option character (if one is
found) from argv that matches a character in optstring, if there is
one that matches. */
optdecl = strchr(optstring, optchar);
if (optdecl) {
/* [I]f a character is followed by a colon, the option takes an
argument. */
if (optdecl[1] == ':') {
optarg = ++optcursor;
if (*optarg == '\0') {
/* GNU extension: Two colons mean an option takes an
optional arg; if there is text in the current argv-element
(i.e., in the same word as the option name itself, for example,
"-oarg"), then it is returned in optarg, otherwise optarg is set
to zero. */
if (optdecl[2] != ':') {
/* If the option was the last character in the string pointed to by
an element of argv, then optarg shall contain the next element
of argv, and optind shall be incremented by 2. If the resulting
value of optind is greater than argc, this indicates a missing
option-argument, and getopt() shall return an error indication.
Otherwise, optarg shall point to the string following the
option character in that element of argv, and optind shall be
incremented by 1.
*/
if (++optind < argc) {
optarg = argv[optind];
} else {
/* If it detects a missing option-argument, it shall return the
colon character ( ':' ) if the first character of optstring
was a colon, or a question-mark character ( '?' ) otherwise.
*/
optarg = NULL;
optchar = (optstring[0] == ':') ? ':' : '?';
}
} else {
optarg = NULL;
}
}
optcursor = NULL;
}
} else {
/* If getopt() encounters an option character that is not contained in
optstring, it shall return the question-mark ( '?' ) character. */
optchar = '?';
}
if (optcursor == NULL || *++optcursor == '\0')
++optind;
return optchar;
no_more_optchars:
optcursor = NULL;
return -1;
}
/* Implementation based on [1].
/* vim:ts=3
[1] http://www.kernel.org/doc/man-pages/online/pages/man3/getopt.3.html
*/
int getopt_long(int argc, char* const argv[], const char* optstring,
const struct option* longopts, int* longindex) {
const struct option* o = longopts;
const struct option* match = NULL;
int num_matches = 0;
size_t argument_name_length = 0;
const char* current_argument = NULL;
int retval = -1;
optarg = NULL;
optopt = 0;
if (optind >= argc)
return -1;
if (strlen(argv[optind]) < 3 || strncmp(argv[optind], "--", 2) != 0)
return getopt(argc, argv, optstring);
/* It's an option; starts with -- and is longer than two chars. */
current_argument = argv[optind] + 2;
argument_name_length = strcspn(current_argument, "=");
for (; o->name; ++o) {
if (strncmp(o->name, current_argument, argument_name_length) == 0) {
match = o;
++num_matches;
}
}
if (num_matches == 1) {
/* If longindex is not NULL, it points to a variable which is set to the
index of the long option relative to longopts. */
if (longindex)
*longindex = (match - longopts);
/* If flag is NULL, then getopt_long() shall return val.
Otherwise, getopt_long() returns 0, and flag shall point to a variable
which shall be set to val if the option is found, but left unchanged if
the option is not found. */
if (match->flag)
*(match->flag) = match->val;
retval = match->flag ? 0 : match->val;
if (match->has_arg != no_argument) {
optarg = strchr(argv[optind], '=');
if (optarg != NULL)
++optarg;
if (match->has_arg == required_argument) {
/* Only scan the next argv for required arguments. Behavior is not
specified, but has been observed with Ubuntu and Mac OSX. */
if (optarg == NULL && ++optind < argc) {
optarg = argv[optind];
}
if (optarg == NULL)
retval = ':';
}
} else if (strchr(argv[optind], '=')) {
/* An argument was provided to a non-argument option.
I haven't seen this specified explicitly, but both GNU and BSD-based
implementations show this behavior.
*/
retval = '?';
}
} else {
/* Unknown option or ambiguous match. */
retval = '?';
}
++optind;
return retval;
}

98
deps/getopt.h vendored
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@ -1,63 +1,57 @@
/*****************************************************************************
* getopt.h - competent and free getopt library.
* $Header: /cvsroot/freegetopt/freegetopt/getopt.h,v 1.2 2003/10/26 03:10:20 vindaci Exp $
*
* Copyright (c)2002-2003 Mark K. Kim
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the original author of this software nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef GETOPT_H_
#define GETOPT_H_
#ifdef __cplusplus
/* Copyright (c) 2012, Kim Gräsman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Kim Gräsman nor the names of contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL KIM GRÄSMAN BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef INCLUDED_GETOPT_PORT_H
#define INCLUDED_GETOPT_PORT_H
#if defined(__cplusplus)
extern "C" {
#endif
extern const int no_argument;
extern const int required_argument;
extern const int optional_argument;
extern char* optarg;
extern int optind;
extern int opterr;
extern int optopt;
extern int optind, opterr, optopt;
int getopt(int argc, char** argv, const char* optstr);
struct option {
const char* name;
int has_arg;
int* flag;
int val;
};
int getopt(int argc, char* const argv[], const char* optstring);
#ifdef __cplusplus
int getopt_long(int argc, char* const argv[],
const char* optstring, const struct option* longopts, int* longindex);
#if defined(__cplusplus)
}
#endif
#endif /* GETOPT_H_ */
/* vim:ts=3
*/
#endif // INCLUDED_GETOPT_PORT_H

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