eal/windows: add getopt implementation
Adding getopt files to support parsing option on Windows. The original contribution is under BSD-2 license. https://github.com/greenplum-db/libusual/blob/master/usual/getopt.c https://github.com/greenplum-db/libusual/blob/master/usual/getopt.h Signed-off-by: Antara Ganesh Kolar <antara.ganesh.kolar@intel.com> Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com> Reviewed-by: Ranjit Menon <ranjit.menon@intel.com> Reviewed-by: Keith Wiles <keith.wiles@intel.com> Reviewed-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com> Tested-by: Narcisa Ana Maria Vasile <narcisa.vasile@microsoft.com> Acked-by: Narcisa Ana Maria Vasile <narcisa.vasile@microsoft.com>
This commit is contained in:
Pallavi Kadam
Thomas Monjalon
parent
e8428a9d89
commit
5e373e456e
470
lib/librte_eal/windows/eal/getopt.c
Normal file
470
lib/librte_eal/windows/eal/getopt.c
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@ -0,0 +1,470 @@
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/* SPDX-License-Identifier: ISC AND BSD-2-Clause
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* Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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*/
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/*
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Dieter Baron and Thomas Klausner.
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*/
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#include <getopt.h>
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#ifdef NEED_USUAL_GETOPT
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#include <string.h>
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#include <stdlib.h>
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const char *optarg; /* argument associated with option */
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int opterr = 1; /* if error message should be printed */
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int optind = 1; /* index into parent argv vector */
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int optopt = '?'; /* character checked for validity */
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static void pass(void) {}
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#define warnx(a, ...) pass()
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#define PRINT_ERROR ((opterr) && (*options != ':'))
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#define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */
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#define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */
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#define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */
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/* return values */
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#define BADCH ((int)'?')
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#define BADARG ((*options == ':') ? (int)':' : (int)'?')
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#define INORDER 1
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#define EMSG ""
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static const char *place = EMSG; /* option letter processing */
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/* XXX: set optreset to 1 rather than these two */
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static int nonopt_start = -1; /* first non option argument (for permute) */
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static int nonopt_end = -1; /* first option after non options (for permute) */
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/* Error messages */
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static const char recargchar[] = "option requires an argument -- %c";
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static const char recargstring[] = "option requires an argument -- %s";
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static const char ambig[] = "ambiguous option -- %.*s";
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static const char noarg[] = "option doesn't take an argument -- %.*s";
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static const char illoptchar[] = "unknown option -- %c";
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static const char illoptstring[] = "unknown option -- %s";
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/*
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* Compute the greatest common divisor of a and b.
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*/
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static int
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gcd(int a, int b)
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{
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int c;
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c = a % b;
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while (c != 0) {
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a = b;
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b = c;
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c = a % b;
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}
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return (b);
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}
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/*
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* Exchange the block from nonopt_start to nonopt_end with the block
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* from nonopt_end to opt_end (keeping the same order of arguments
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* in each block).
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*/
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static void
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permute_args(int panonopt_start, int panonopt_end, int opt_end,
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char **nargv)
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{
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int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
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char *swap;
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/*
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* compute lengths of blocks and number and size of cycles
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*/
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nnonopts = panonopt_end - panonopt_start;
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nopts = opt_end - panonopt_end;
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ncycle = gcd(nnonopts, nopts);
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cyclelen = (opt_end - panonopt_start) / ncycle;
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for (i = 0; i < ncycle; i++) {
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cstart = panonopt_end+i;
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pos = cstart;
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for (j = 0; j < cyclelen; j++) {
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if (pos >= panonopt_end)
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pos -= nnonopts;
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else
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pos += nopts;
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swap = nargv[pos];
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/* LINTED const cast */
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((char **) nargv)[pos] = nargv[cstart];
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/* LINTED const cast */
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((char **)nargv)[cstart] = swap;
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}
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}
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}
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/*
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* parse_long_options --
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* Parse long options in argc/argv argument vector.
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* Returns -1 if short_too is set and the option does not match long_options.
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*/
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static int
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parse_long_options(char **nargv, const char *options,
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const struct option *long_options, int *idx, int short_too)
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{
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const char *current_argv;
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char *has_equal;
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size_t current_argv_len;
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int i, match;
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current_argv = place;
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match = -1;
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optind++;
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has_equal = strchr(current_argv, '=');
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if (has_equal != NULL) {
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/* argument found (--option=arg) */
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current_argv_len = has_equal - current_argv;
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has_equal++;
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} else
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current_argv_len = strlen(current_argv);
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for (i = 0; long_options[i].name; i++) {
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/* find matching long option */
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if (strncmp(current_argv, long_options[i].name,
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current_argv_len))
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continue;
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if (strlen(long_options[i].name) == current_argv_len) {
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/* exact match */
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match = i;
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break;
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}
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/*
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* If this is a known short option, don't allow
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* a partial match of a single character.
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*/
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if (short_too && current_argv_len == 1)
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continue;
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if (match == -1) /* partial match */
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match = i;
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else {
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/* ambiguous abbreviation */
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if (PRINT_ERROR)
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warnx(ambig, (int)current_argv_len,
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current_argv);
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optopt = 0;
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return BADCH;
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}
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}
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if (match != -1) { /* option found */
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if (long_options[match].has_arg == no_argument
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&& has_equal) {
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if (PRINT_ERROR)
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warnx(noarg, (int)current_argv_len,
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current_argv);
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/*
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* XXX: GNU sets optopt to val regardless of flag
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*/
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if (long_options[match].flag == NULL)
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optopt = long_options[match].val;
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else
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optopt = 0;
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return BADARG;
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}
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if (long_options[match].has_arg == required_argument ||
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long_options[match].has_arg == optional_argument) {
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if (has_equal)
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optarg = has_equal;
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else if (long_options[match].has_arg ==
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required_argument) {
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/*
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* optional argument doesn't use next nargv
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*/
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optarg = nargv[optind++];
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}
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}
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if ((long_options[match].has_arg == required_argument)
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&& (optarg == NULL)) {
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/*
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* Missing argument; leading ':' indicates no error
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* should be generated.
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*/
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if (PRINT_ERROR)
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warnx(recargstring,
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current_argv);
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/*
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* XXX: GNU sets optopt to val regardless of flag
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*/
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if (long_options[match].flag == NULL)
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optopt = long_options[match].val;
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else
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optopt = 0;
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--optind;
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return BADARG;
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}
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} else { /* unknown option */
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if (short_too) {
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--optind;
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return (-1);
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}
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if (PRINT_ERROR)
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warnx(illoptstring, current_argv);
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optopt = 0;
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return BADCH;
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}
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if (idx)
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*idx = match;
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if (long_options[match].flag) {
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*long_options[match].flag = long_options[match].val;
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return 0;
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} else
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return (long_options[match].val);
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}
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/*
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* getopt_internal --
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* Parse argc/argv argument vector. Called by user level routines.
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*/
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static int
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getopt_internal(int nargc, char **nargv, const char *options,
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const struct option *long_options, int *idx, int flags)
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{
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char *oli; /* option letter list index */
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int optchar, short_too;
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static int posixly_correct = -1;
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char *buf;
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size_t len;
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int optreset = 0;
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if (options == NULL)
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return (-1);
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/*
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* Disable GNU extensions if POSIXLY_CORRECT is set or options
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* string begins with a '+'.
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*/
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if (posixly_correct == -1)
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posixly_correct = _dupenv_s(&buf, &len, "POSIXLY_CORRECT");
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if (!posixly_correct || *options == '+')
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flags &= ~FLAG_PERMUTE;
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else if (*options == '-')
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flags |= FLAG_ALLARGS;
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if (*options == '+' || *options == '-')
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options++;
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if (!posixly_correct)
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free(buf);
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/*
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* reset if requested
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*/
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if (optind == 0)
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optind = optreset = 1;
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optarg = NULL;
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if (optreset)
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nonopt_start = nonopt_end = -1;
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start:
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if (optreset || !*place) { /* update scanning pointer */
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optreset = 0;
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if (optind >= nargc) { /* end of argument vector */
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place = EMSG;
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if (nonopt_end != -1) {
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/* do permutation, if we have to */
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permute_args(nonopt_start, nonopt_end,
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optind, nargv);
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optind -= nonopt_end - nonopt_start;
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} else if (nonopt_start != -1) {
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/*
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* If we skipped non-options, set optind
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* to the first of them.
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*/
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optind = nonopt_start;
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}
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nonopt_start = nonopt_end = -1;
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return (-1);
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}
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place = nargv[optind];
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if (*place != '-' ||
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(place[1] == '\0' && strchr(options, '-') == NULL)) {
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place = EMSG; /* found non-option */
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if (flags & FLAG_ALLARGS) {
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/*
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* GNU extension:
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* return non-option as argument to option 1
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*/
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optarg = nargv[optind++];
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return INORDER;
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}
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if (!(flags & FLAG_PERMUTE)) {
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/*
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* If no permutation wanted, stop parsing
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* at first non-option.
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*/
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return (-1);
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}
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/* do permutation */
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if (nonopt_start == -1)
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nonopt_start = optind;
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else if (nonopt_end != -1) {
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permute_args(nonopt_start, nonopt_end,
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optind, nargv);
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nonopt_start = optind -
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(nonopt_end - nonopt_start);
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nonopt_end = -1;
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}
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optind++;
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/* process next argument */
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goto start;
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}
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if (nonopt_start != -1 && nonopt_end == -1)
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nonopt_end = optind;
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/*
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* If we have "-" do nothing, if "--" we are done.
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*/
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if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
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optind++;
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place = EMSG;
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/*
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* We found an option (--), so if we skipped
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* non-options, we have to permute.
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*/
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if (nonopt_end != -1) {
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permute_args(nonopt_start, nonopt_end,
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optind, nargv);
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optind -= nonopt_end - nonopt_start;
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}
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nonopt_start = nonopt_end = -1;
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return (-1);
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}
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}
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/*
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* Check long options if:
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* 1) we were passed some
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* 2) the arg is not just "-"
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* 3) either the arg starts with -- we are getopt_long_only()
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*/
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if (long_options != NULL && place != nargv[optind] &&
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(*place == '-' || (flags & FLAG_LONGONLY))) {
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short_too = 0;
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if (*place == '-')
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place++; /* --foo long option */
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else if (*place != ':' && strchr(options, *place) != NULL)
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short_too = 1; /* could be short option too */
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optchar = parse_long_options(nargv, options, long_options,
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idx, short_too);
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if (optchar != -1) {
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place = EMSG;
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return optchar;
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}
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}
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optchar = (int)*place++;
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oli = strchr(options, optchar);
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if (optchar == (int)':' ||
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(optchar == (int)'-' && *place != '\0') ||
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oli == NULL) {
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/*
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* If the user specified "-" and '-' isn't listed in
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* options, return -1 (non-option) as per POSIX.
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* Otherwise, it is an unknown option character (or ':').
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*/
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if (optchar == (int)'-' && *place == '\0')
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return (-1);
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if (!*place)
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++optind;
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if (PRINT_ERROR)
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warnx(illoptchar, optchar);
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optopt = optchar;
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return BADCH;
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}
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if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
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/* -W long-option */
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if (*place)
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;
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else if (++optind >= nargc) { /* no arg */
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place = EMSG;
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if (PRINT_ERROR)
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warnx(recargchar, optchar);
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optopt = optchar;
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return BADARG;
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} /* white space */
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place = nargv[optind];
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optchar = parse_long_options(nargv, options, long_options,
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idx, 0);
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place = EMSG;
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return optchar;
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}
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if (*++oli != ':') { /* doesn't take argument */
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if (!*place)
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++optind;
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} else { /* takes (optional) argument */
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optarg = NULL;
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if (*place) /* no white space */
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optarg = place;
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else if (oli[1] != ':') { /* arg not optional */
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if (++optind >= nargc) { /* no arg */
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place = EMSG;
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if (PRINT_ERROR)
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warnx(recargchar, optchar);
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optopt = optchar;
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return BADARG;
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}
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optarg = nargv[optind];
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}
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place = EMSG;
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++optind;
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}
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/* dump back option letter */
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return optchar;
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}
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/*
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* getopt --
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* Parse argc/argv argument vector.
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*/
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int
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getopt(int nargc, char *nargv[], const char *options)
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{
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return getopt_internal(nargc, nargv, options, NULL, NULL,
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FLAG_PERMUTE);
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}
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/*
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* getopt_long --
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* Parse argc/argv argument vector.
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*/
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int
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getopt_long(int nargc, char *nargv[], const char *options,
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const struct option *long_options, int *idx)
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{
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return (getopt_internal(nargc, nargv, options, long_options, idx,
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FLAG_PERMUTE));
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}
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/*
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* getopt_long_only --
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* Parse argc/argv argument vector.
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*/
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int
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getopt_long_only(int nargc, char *nargv[], const char *options,
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const struct option *long_options, int *idx)
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{
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return (getopt_internal(nargc, nargv, options, long_options, idx,
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FLAG_PERMUTE|FLAG_LONGONLY));
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}
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#endif /* NEED_USUAL_GETOPT */
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92
lib/librte_eal/windows/eal/include/getopt.h
Normal file
92
lib/librte_eal/windows/eal/include/getopt.h
Normal file
@ -0,0 +1,92 @@
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/* SPDX-License-Identifier: BSD-2-Clause
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Dieter Baron and Thomas Klausner.
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*/
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/**
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* @file
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* getopt compat.
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*
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* This module provides getopt() and getopt_long().
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*/
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#ifndef _USUAL_GETOPT_H_
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#define _USUAL_GETOPT_H_
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#ifndef NEED_USUAL_GETOPT
|
||||
#if !defined(HAVE_GETOPT_H) || !defined(HAVE_GETOPT) || \
|
||||
!defined(HAVE_GETOPT_LONG)
|
||||
#define NEED_USUAL_GETOPT
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef NEED_USUAL_GETOPT
|
||||
|
||||
/* Use system getopt */
|
||||
#include <getopt.h>
|
||||
|
||||
#else /* NEED_USUAL_GETOPT */
|
||||
|
||||
/* avoid name collision */
|
||||
#define optarg usual_optarg
|
||||
#define opterr usual_opterr
|
||||
#define optind usual_optind
|
||||
#define optopt usual_optopt
|
||||
#define getopt(a, b, c) usual_getopt(a, b, c)
|
||||
#define getopt_long(a, b, c, d, e) usual_getopt_long(a, b, c, d, e)
|
||||
|
||||
|
||||
/** argument to current option, or NULL if it has none */
|
||||
extern const char *optarg;
|
||||
/** Current position in arg string. Starts from 1.
|
||||
* Setting to 0 resets state.
|
||||
*/
|
||||
extern int optind;
|
||||
/** whether getopt() should print error messages on problems. Default: 1. */
|
||||
extern int opterr;
|
||||
/** Option char which caused error */
|
||||
extern int optopt;
|
||||
|
||||
/** long option takes no argument */
|
||||
#define no_argument 0
|
||||
/** long option requires argument */
|
||||
#define required_argument 1
|
||||
/** long option has optional argument */
|
||||
#define optional_argument 2
|
||||
|
||||
/** Long option description */
|
||||
struct option {
|
||||
/** name of long option */
|
||||
const char *name;
|
||||
|
||||
/**
|
||||
* whether option takes an argument.
|
||||
* One of no_argument, required_argument, and optional_argument.
|
||||
*/
|
||||
int has_arg;
|
||||
|
||||
/** if not NULL, set *flag to val when option found */
|
||||
int *flag;
|
||||
|
||||
/** if flag not NULL, value to set *flag to; else return value */
|
||||
int val;
|
||||
};
|
||||
|
||||
/** Compat: getopt */
|
||||
int getopt(int argc, char *argv[], const char *options);
|
||||
|
||||
/** Compat: getopt_long */
|
||||
int getopt_long(int argc, char *argv[], const char *options,
|
||||
const struct option *longopts, int *longindex);
|
||||
|
||||
/** Compat: getopt_long_only */
|
||||
int getopt_long_only(int nargc, char *argv[], const char *options,
|
||||
const struct option *long_options, int *idx);
|
||||
|
||||
|
||||
#endif /* NEED_USUAL_GETOPT */
|
||||
|
||||
#endif /* !_USUAL_GETOPT_H_ */
|
||||
@ -17,4 +17,5 @@ env_sources = files('eal.c',
|
||||
'eal_debug.c',
|
||||
'eal_lcore.c',
|
||||
'eal_thread.c',
|
||||
'getopt.c',
|
||||
)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user