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authorH. Peter Anvin <hpa@zytor.com>2016-02-09 18:08:47 -0800
committerH. Peter Anvin <hpa@zytor.com>2016-02-09 18:08:47 -0800
commitf2f897a1762fab84d2905f32b1c15dd7b42abb56 (patch)
treea38f51d3f1fcbf44afddb4736d549c12eaf491be /gpxe/src/core/getopt.c
parent72d2959272b4616f17a97667e6dfa9d06bf109a3 (diff)
downloadsyslinux-f2f897a1762fab84d2905f32b1c15dd7b42abb56.tar.gz
gpxe: delete long since obsolete snapshot of gPXE
gPXE has been deprecated in favor of iPXE for many, many years now. It is much better than users get it directly from the iPXE project, since we should no longer need any special modifications for Syslinux use. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'gpxe/src/core/getopt.c')
-rw-r--r--gpxe/src/core/getopt.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/gpxe/src/core/getopt.c b/gpxe/src/core/getopt.c
deleted file mode 100644
index b67da0c1..00000000
--- a/gpxe/src/core/getopt.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stdint.h>
-#include <string.h>
-#include <stdio.h>
-#include <getopt.h>
-
-/** @file
- *
- * Parse command-line options
- *
- */
-
-/**
- * Option argument
- *
- * This will point to the argument for the most recently returned
- * option, if applicable.
- */
-char *optarg;
-
-/**
- * Current option index
- *
- * This is an index into the argv[] array. When getopt() returns -1,
- * @c optind is the index to the first element that is not an option.
- */
-int optind;
-
-/**
- * Current option character index
- *
- * This is an index into the current element of argv[].
- */
-int nextchar;
-
-/**
- * Unrecognised option
- *
- * When an unrecognised option is encountered, the actual option
- * character is stored in @c optopt.
- */
-int optopt;
-
-/**
- * Get option argument from argv[] array
- *
- * @v argc Argument count
- * @v argv Argument list
- * @ret argument Option argument, or NULL
- *
- * Grab the next element of argv[], if it exists and is not an option.
- */
-static const char * get_argv_argument ( int argc, char * const argv[] ) {
- char *arg;
-
- /* Don't overrun argv[] */
- if ( optind >= argc )
- return NULL;
- arg = argv[optind];
-
- /* If next argv element is an option, then it's not usable as
- * an argument.
- */
- if ( *arg == '-' )
- return NULL;
-
- /** Consume this argv element, and return it */
- optind++;
- return arg;
-}
-
-/**
- * Match long option
- *
- * @v argc Argument count
- * @v argv Argument list
- * @v opttext Option text within current argv[] element
- * @v longopt Long option specification
- * @ret option Option to return from getopt()
- * @ret matched Found a match for this long option
- */
-static int match_long_option ( int argc, char * const argv[],
- const char *opttext,
- const struct option *longopt, int *option ) {
- size_t optlen;
- const char *argument = NULL;
-
- /* Compare option name */
- optlen = strlen ( longopt->name );
- if ( strncmp ( opttext, longopt->name, optlen ) != 0 )
- return 0;
-
- /* Check for inline argument */
- if ( opttext[optlen] == '=' ) {
- argument = &opttext[ optlen + 1 ];
- } else if ( opttext[optlen] ) {
- /* Long option with trailing garbage - no match */
- return 0;
- }
-
- /* Consume this argv element */
- optind++;
-
- /* If we want an argument but don't have one yet, try to grab
- * the next argv element
- */
- if ( ( longopt->has_arg != no_argument ) && ( ! argument ) )
- argument = get_argv_argument ( argc, argv );
-
- /* If we need an argument but don't have one, sulk */
- if ( ( longopt->has_arg == required_argument ) && ( ! argument ) ) {
- printf ( "Option \"%s\" requires an argument\n",
- longopt->name );
- *option = ':';
- return 1;
- }
-
- /* If we have an argument where we shouldn't have one, sulk */
- if ( ( longopt->has_arg == no_argument ) && argument ) {
- printf ( "Option \"%s\" takes no argument\n", longopt->name );
- *option = ':';
- return 1;
- }
-
- /* Store values and return success */
- optarg = ( char * ) argument;
- if ( longopt->flag ) {
- *(longopt->flag) = longopt->val;
- *option = 0;
- } else {
- *option = longopt->val;
- }
- return 1;
-}
-
-/**
- * Match short option
- *
- * @v argc Argument count
- * @v argv Argument list
- * @v opttext Option text within current argv[] element
- * @v shortopt Option character from option specification
- * @ret option Option to return from getopt()
- * @ret matched Found a match for this short option
- */
-static int match_short_option ( int argc, char * const argv[],
- const char *opttext, int shortopt,
- enum getopt_argument_requirement has_arg,
- int *option ) {
- const char *argument = NULL;
-
- /* Compare option character */
- if ( *opttext != shortopt )
- return 0;
-
- /* Consume option character */
- opttext++;
- nextchar++;
- if ( *opttext ) {
- if ( has_arg != no_argument ) {
- /* Consume remainder of element as inline argument */
- argument = opttext;
- optind++;
- nextchar = 0;
- }
- } else {
- /* Reached end of argv element */
- optind++;
- nextchar = 0;
- }
-
- /* If we want an argument but don't have one yet, try to grab
- * the next argv element
- */
- if ( ( has_arg != no_argument ) && ( ! argument ) )
- argument = get_argv_argument ( argc, argv );
-
- /* If we need an argument but don't have one, sulk */
- if ( ( has_arg == required_argument ) && ( ! argument ) ) {
- printf ( "Option \"%c\" requires an argument\n", shortopt );
- *option = ':';
- return 1;
- }
-
- /* Store values and return success */
- optarg = ( char * ) argument;
- *option = shortopt;
- return 1;
-}
-
-/**
- * Parse command-line options
- *
- * @v argc Argument count
- * @v argv Argument list
- * @v optstring Option specification string
- * @v longopts Long option specification table
- * @ret longindex Index of long option (or NULL)
- * @ret option Option found, or -1 for no more options
- *
- * Note that the caller must arrange for reset_getopt() to be called
- * before each set of calls to getopt_long(). In Etherboot, this is
- * done automatically by execv().
- */
-int getopt_long ( int argc, char * const argv[], const char *optstring,
- const struct option *longopts, int *longindex ) {
- const char *opttext = argv[optind];
- const struct option *longopt;
- int shortopt;
- enum getopt_argument_requirement has_arg;
- int option;
-
- /* Check for end of argv array */
- if ( optind >= argc )
- return -1;
-
- /* Check for end of options */
- if ( *(opttext++) != '-' )
- return -1;
-
- /* Check for long options */
- if ( *(opttext++) == '-' ) {
- for ( longopt = longopts ; longopt->name ; longopt++ ) {
- if ( ! match_long_option ( argc, argv, opttext,
- longopt, &option ) )
- continue;
- if ( longindex )
- *longindex = ( longopt - longopts );
- return option;
- }
- optopt = '?';
- printf ( "Unrecognised option \"--%s\"\n", opttext );
- return '?';
- }
-
- /* Check for short options */
- if ( nextchar < 1 )
- nextchar = 1;
- opttext = ( argv[optind] + nextchar );
- while ( ( shortopt = *(optstring++) ) ) {
- has_arg = no_argument;
- while ( *optstring == ':' ) {
- has_arg++;
- optstring++;
- }
- if ( match_short_option ( argc, argv, opttext, shortopt,
- has_arg, &option ) ) {
- return option;
- }
- }
- optopt = *opttext;
- printf ( "Unrecognised option \"-%c\"\n", optopt );
- return '?';
-}