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+/** @file
+ * IPRT - Command Line Parsing.
+ */
+
+/*
+ * Copyright (C) 2007-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * 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, in version 3 of the
+ * License.
+ *
+ * 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, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef IPRT_INCLUDED_getopt_h
+#define IPRT_INCLUDED_getopt_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+
+#include <iprt/cdefs.h>
+#include <iprt/types.h>
+#include <iprt/errcore.h> /* for VINF_GETOPT_NOT_OPTION */
+
+RT_C_DECLS_BEGIN
+
+/** @defgroup grp_rt_getopt RTGetOpt - Command Line Parsing
+ * @ingroup grp_rt
+ * @{
+ */
+
+/** @name Values for RTGETOPTDEF::fFlags and the fFlags parameter of
+ * RTGetOptFetchValue.
+ *
+ * @remarks When neither of the RTGETOPT_FLAG_HEX, RTGETOPT_FLAG_OCT and RTGETOPT_FLAG_DEC
+ * flags are specified with a integer value format, RTGetOpt will default to
+ * decimal but recognize the 0x prefix when present. RTGetOpt will not look for
+ * for the octal prefix (0).
+ * @{ */
+/** Requires no extra argument.
+ * (Can be assumed to be 0 for ever.) */
+#define RTGETOPT_REQ_NOTHING 0
+/** A value is required or error will be returned. */
+#define RTGETOPT_REQ_STRING 1
+/** The value must be a valid signed 8-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_INT8 2
+/** The value must be a valid unsigned 8-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_UINT8 3
+/** The value must be a valid signed 16-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_INT16 4
+/** The value must be a valid unsigned 16-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_UINT16 5
+/** The value must be a valid signed 32-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_INT32 6
+/** The value must be a valid unsigned 32-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_UINT32 7
+/** The value must be a valid signed 64-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_INT64 8
+/** The value must be a valid unsigned 64-bit integer or an error will be returned. */
+#define RTGETOPT_REQ_UINT64 9
+/** The value must be a valid IPv4 address.
+ * (Not a name, but 4 values in the 0..255 range with dots separating them). */
+#define RTGETOPT_REQ_IPV4ADDR 10
+/** The value must be a valid IPv4 CIDR.
+ * As with RTGETOPT_REQ_IPV4ADDR, no name.
+ */
+#define RTGETOPT_REQ_IPV4CIDR 11
+#if 0
+/* take placers */
+/** The value must be a valid IPv6 addr
+ * @todo: Add types and parsing routines in (iprt/net.h)
+ */
+#define RTGETOPT_REQ_IPV6ADDR 12
+/** The value must be a valid IPv6 CIDR
+ * @todo: Add types and parsing routines in (iprt/net.h)
+ */
+#define RTGETOPT_REQ_IPV6CIDR 13
+#endif
+/** The value must be a valid ethernet MAC address. */
+#define RTGETOPT_REQ_MACADDR 14
+/** The value must be a valid UUID. */
+#define RTGETOPT_REQ_UUID 15
+/** The value must be a string with value as "on" or "off". */
+#define RTGETOPT_REQ_BOOL_ONOFF 16
+/** Boolean option accepting a wide range of typical ways of
+ * expression true and false. */
+#define RTGETOPT_REQ_BOOL 17
+/** The value must two unsigned 32-bit integer values separated by a colon,
+ * slash, pipe or space(s). */
+#define RTGETOPT_REQ_UINT32_PAIR 18
+/** The value must two unsigned 64-bit integer values separated by a colon,
+ * slash, pipe or space(s). */
+#define RTGETOPT_REQ_UINT64_PAIR 19
+/** The value must at least unsigned 32-bit integer value, optionally
+ * followed by a second separated by a colon, slash, pipe or space(s). */
+#define RTGETOPT_REQ_UINT32_OPTIONAL_PAIR 20
+/** The value must at least unsigned 64-bit integer value, optionally
+ * followed by a second separated by a colon, slash, pipe or space(s). */
+#define RTGETOPT_REQ_UINT64_OPTIONAL_PAIR 21
+/** The mask of the valid required types. */
+#define RTGETOPT_REQ_MASK 31
+/** Treat the value as hexadecimal - only applicable with the RTGETOPT_REQ_*INT*. */
+#define RTGETOPT_FLAG_HEX RT_BIT(16)
+/** Treat the value as octal - only applicable with the RTGETOPT_REQ_*INT*. */
+#define RTGETOPT_FLAG_OCT RT_BIT(17)
+/** Treat the value as decimal - only applicable with the RTGETOPT_REQ_*INT*. */
+#define RTGETOPT_FLAG_DEC RT_BIT(18)
+/** The index value is attached to the argument - only valid for long arguments. */
+#define RTGETOPT_FLAG_INDEX RT_BIT(19)
+/** Used with RTGETOPT_FLAG_INDEX, setting index to zero if none given.
+ * (The default is to fail with VERR_GETOPT_INDEX_MISSING.) */
+#define RTGETOPT_FLAG_INDEX_DEF_0 RT_BIT(20)
+/** Used with RTGETOPT_FLAG_INDEX, setting index to one if none given.
+ * (The default is to fail with VERR_GETOPT_INDEX_MISSING.) */
+#define RTGETOPT_FLAG_INDEX_DEF_1 RT_BIT(21)
+/** For simplicity. */
+#define RTGETOPT_FLAG_INDEX_DEF_MASK (RT_BIT(20) | RT_BIT(21))
+/** For simple conversion. */
+#define RTGETOPT_FLAG_INDEX_DEF_SHIFT 20
+/** For use with RTGETOPT_FLAG_INDEX_DEF_0 or RTGETOPT_FLAG_INDEX_DEF_1 to
+ * imply a dash before the index when a digit is specified.
+ * This is for transitioning from options without index to optionally allow
+ * index options, i.e. "--long" defaults to either index 1 or 1 using the above
+ * flags, while "--long-1" explicitly gives the index ("--long-" is not valid).
+ * This flag matches an "-" separating the "--long" string
+ * (RTGETOPTDEFS::pszLong) from the index value. */
+#define RTGETOPT_FLAG_INDEX_DEF_DASH RT_BIT(22)
+/** Treat the long option as case insensitive. */
+#define RTGETOPT_FLAG_ICASE RT_BIT(23)
+/** Mask of valid bits - for validation. */
+#define RTGETOPT_VALID_MASK ( RTGETOPT_REQ_MASK \
+ | RTGETOPT_FLAG_HEX \
+ | RTGETOPT_FLAG_OCT \
+ | RTGETOPT_FLAG_DEC \
+ | RTGETOPT_FLAG_INDEX \
+ | RTGETOPT_FLAG_INDEX_DEF_0 \
+ | RTGETOPT_FLAG_INDEX_DEF_1 \
+ | RTGETOPT_FLAG_INDEX_DEF_DASH \
+ | RTGETOPT_FLAG_ICASE )
+/** @} */
+
+/**
+ * An option definition.
+ */
+typedef struct RTGETOPTDEF
+{
+ /** The long option.
+ * This is optional */
+ const char *pszLong;
+ /** The short option character.
+ * This doesn't have to be a character, it may also be a \#define or enum value if
+ * there isn't any short version of this option. Must be greater than 0. */
+ int iShort;
+ /** The flags (RTGETOPT_*). */
+ unsigned fFlags;
+} RTGETOPTDEF;
+/** Pointer to an option definition. */
+typedef RTGETOPTDEF *PRTGETOPTDEF;
+/** Pointer to an const option definition. */
+typedef const RTGETOPTDEF *PCRTGETOPTDEF;
+
+/**
+ * Option argument union.
+ *
+ * What ends up here depends on argument format in the option definition.
+ */
+typedef union RTGETOPTUNION
+{
+ /** Pointer to the definition on failure or when the option doesn't take an argument.
+ * This can be NULL for some errors. */
+ PCRTGETOPTDEF pDef;
+ /** A RTGETOPT_REQ_STRING option argument. */
+ const char *psz;
+
+ /** A RTGETOPT_REQ_INT8 option argument. */
+ int8_t i8;
+ /** A RTGETOPT_REQ_UINT8 option argument . */
+ uint8_t u8;
+ /** A RTGETOPT_REQ_INT16 option argument. */
+ int16_t i16;
+ /** A RTGETOPT_REQ_UINT16 option argument . */
+ uint16_t u16;
+ /** A RTGETOPT_REQ_INT16 option argument. */
+ int32_t i32;
+ /** A RTGETOPT_REQ_UINT32 option argument . */
+ uint32_t u32;
+ /** A RTGETOPT_REQ_INT64 option argument. */
+ int64_t i64;
+ /** A RTGETOPT_REQ_UINT64 option argument. */
+ uint64_t u64;
+#ifdef IPRT_INCLUDED_net_h
+ /** A RTGETOPT_REQ_IPV4ADDR option argument. */
+ RTNETADDRIPV4 IPv4Addr;
+ /** A RTGETOPT_REQ_IPV4CIDR option argument. */
+ struct
+ {
+ RTNETADDRIPV4 IPv4Network;
+ RTNETADDRIPV4 IPv4Netmask;
+ } CidrIPv4;
+#endif
+ /** A RTGETOPT_REQ_MACADDR option argument. */
+ RTMAC MacAddr;
+ /** A RTGETOPT_REQ_UUID option argument. */
+ RTUUID Uuid;
+ /** A boolean flag. */
+ bool f;
+ /** A RTGETOPT_REQ_UINT32_PAIR or RTGETOPT_REQ_UINT32_OPTIONAL_PAIR option
+ * argument. */
+ struct
+ {
+ uint32_t uFirst;
+ uint32_t uSecond; /**< Set to UINT32_MAX if optional and not present. */
+ } PairU32;
+ /** A RTGETOPT_REQ_UINT64_COLON_PAIR option argument. */
+ struct
+ {
+ uint64_t uFirst;
+ uint64_t uSecond; /**< Set to UINT64_MAX if optional and not present. */
+ } PairU64;
+} RTGETOPTUNION;
+/** Pointer to an option argument union. */
+typedef RTGETOPTUNION *PRTGETOPTUNION;
+/** Pointer to a const option argument union. */
+typedef RTGETOPTUNION const *PCRTGETOPTUNION;
+
+
+/**
+ * RTGetOpt state.
+ */
+typedef struct RTGETOPTSTATE
+{
+ /** The next argument. */
+ int iNext;
+ /** Argument array. */
+ char **argv;
+ /** Number of items in argv. */
+ int argc;
+ /** Option definition array. */
+ PCRTGETOPTDEF paOptions;
+ /** Number of items in paOptions. */
+ size_t cOptions;
+ /** The next short option.
+ * (For parsing ls -latrT4 kind of option lists.) */
+ const char *pszNextShort;
+ /** The option definition which matched. NULL otherwise. */
+ PCRTGETOPTDEF pDef;
+ /** The index of an index option, otherwise UINT32_MAX. */
+ uint32_t uIndex;
+ /** The flags passed to RTGetOptInit. */
+ uint32_t fFlags;
+ /** Number of non-options that we're skipping during a sorted get. The value
+ * INT32_MAX is used to indicate that there are no more options. This is used
+ * to implement '--'. */
+ int32_t cNonOptions;
+
+ /* More members may be added later for dealing with new features. */
+} RTGETOPTSTATE;
+/** Pointer to RTGetOpt state. */
+typedef RTGETOPTSTATE *PRTGETOPTSTATE;
+
+
+/**
+ * Initialize the RTGetOpt state.
+ *
+ * The passed in argument vector may be sorted if fFlags indicates that this is
+ * desired (to be implemented).
+ *
+ * @returns VINF_SUCCESS, VERR_INVALID_PARAMETER or VERR_INVALID_POINTER.
+ * @param pState The state.
+ *
+ * @param argc Argument count, to be copied from what comes in with
+ * main().
+ * @param argv Argument array, to be copied from what comes in with
+ * main(). This may end up being modified by the
+ * option/argument sorting.
+ * @param paOptions Array of RTGETOPTDEF structures, which must specify what
+ * options are understood by the program.
+ * @param cOptions Number of array items passed in with paOptions.
+ * @param iFirst The argument to start with (in argv).
+ * @param fFlags The flags, see RTGETOPTINIT_FLAGS_XXX.
+ */
+RTDECL(int) RTGetOptInit(PRTGETOPTSTATE pState, int argc, char **argv,
+ PCRTGETOPTDEF paOptions, size_t cOptions,
+ int iFirst, uint32_t fFlags);
+
+/** @name RTGetOptInit flags.
+ * @{ */
+/** Sort the arguments so that options comes first, then non-options. */
+#define RTGETOPTINIT_FLAGS_OPTS_FIRST RT_BIT_32(0)
+/** Prevent add the standard version and help options:
+ * - "--help", "-h" and "-?" returns 'h'.
+ * - "--version" and "-V" return 'V'.
+ */
+#define RTGETOPTINIT_FLAGS_NO_STD_OPTS RT_BIT_32(1)
+/** @} */
+
+/**
+ * Command line argument parser, handling both long and short options and checking
+ * argument formats, if desired.
+ *
+ * This is to be called in a loop until it returns 0 (meaning that all options
+ * were parsed) or a negative value (meaning that an error occurred). How non-option
+ * arguments are dealt with depends on the flags passed to RTGetOptInit. The default
+ * (fFlags = 0) is to return VINF_GETOPT_NOT_OPTION with pValueUnion->psz pointing to
+ * the argument string.
+ *
+ * For example, for a program which takes the following options:
+ *
+ * --optwithstring (or -s) and a string argument;
+ * --optwithint (or -i) and a 32-bit signed integer argument;
+ * --verbose (or -v) with no arguments,
+ *
+ * code would look something like this:
+ *
+ * @code
+int main(int argc, char **argv)
+{
+ int rc = RTR3Init();
+ if (RT_FAILURE(rc))
+ return RTMsgInitFailure(rc);
+
+ static const RTGETOPTDEF s_aOptions[] =
+ {
+ { "--optwithstring", 's', RTGETOPT_REQ_STRING },
+ { "--optwithint", 'i', RTGETOPT_REQ_INT32 },
+ { "--verbose", 'v', 0 },
+ };
+
+ int ch;
+ RTGETOPTUNION ValueUnion;
+ RTGETOPTSTATE GetState;
+ RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1, 0);
+ while ((ch = RTGetOpt(&GetState, &ValueUnion)))
+ {
+ // for options that require an argument, ValueUnion has received the value
+ switch (ch)
+ {
+ case 's': // --optwithstring or -s
+ // string argument, copy ValueUnion.psz
+ break;
+
+ case 'i': // --optwithint or -i
+ // integer argument, copy ValueUnion.i32
+ break;
+
+ case 'v': // --verbose or -v
+ g_fOptVerbose = true;
+ break;
+
+ case VINF_GETOPT_NOT_OPTION:
+ // handle non-option argument in ValueUnion.psz.
+ break;
+
+ default:
+ return RTGetOptPrintError(ch, &ValueUnion);
+ }
+ }
+
+ return RTEXITCODE_SUCCESS;
+}
+ @endcode
+ *
+ * @returns 0 when done parsing.
+ * @returns the iShort value of the option. pState->pDef points to the option
+ * definition which matched.
+ * @returns IPRT error status on parse error.
+ * @returns VINF_GETOPT_NOT_OPTION when encountering a non-option argument and
+ * RTGETOPTINIT_FLAGS_OPTS_FIRST was not specified. pValueUnion->psz
+ * points to the argument string.
+ * @returns VERR_GETOPT_UNKNOWN_OPTION when encountering an unknown option.
+ * pValueUnion->psz points to the option string.
+ * @returns VERR_GETOPT_REQUIRED_ARGUMENT_MISSING and pValueUnion->pDef if
+ * a required argument (aka value) was missing for an option.
+ * @returns VERR_GETOPT_INVALID_ARGUMENT_FORMAT and pValueUnion->pDef if
+ * argument (aka value) conversion failed.
+ *
+ * @param pState The state previously initialized with RTGetOptInit.
+ * @param pValueUnion Union with value; in the event of an error, psz member
+ * points to erroneous parameter; otherwise, for options
+ * that require an argument, this contains the value of
+ * that argument, depending on the type that is required.
+ */
+RTDECL(int) RTGetOpt(PRTGETOPTSTATE pState, PRTGETOPTUNION pValueUnion);
+
+/**
+ * Fetch a value.
+ *
+ * Used to retrive a value argument in a manner similar to what RTGetOpt does
+ * (@a fFlags -> @a pValueUnion). This can be used when handling
+ * VINF_GETOPT_NOT_OPTION, but is equally useful for decoding options that
+ * takes more than one value.
+ *
+ * @returns VINF_SUCCESS on success.
+ * @returns IPRT error status on parse error.
+ * @returns VERR_INVALID_PARAMETER if the flags are wrong.
+ * @returns VERR_GETOPT_UNKNOWN_OPTION when pState->pDef is null.
+ * @returns VERR_GETOPT_REQUIRED_ARGUMENT_MISSING if there are no more
+ * available arguments. pValueUnion->pDef is NULL.
+ * @returns VERR_GETOPT_INVALID_ARGUMENT_FORMAT and pValueUnion->pDef is
+ * unchanged if value conversion failed.
+ *
+ * @param pState The state previously initialized with RTGetOptInit.
+ * @param pValueUnion Union with value; in the event of an error, psz member
+ * points to erroneous parameter; otherwise, for options
+ * that require an argument, this contains the value of
+ * that argument, depending on the type that is required.
+ * @param fFlags What to get, that is RTGETOPT_REQ_XXX.
+ */
+RTDECL(int) RTGetOptFetchValue(PRTGETOPTSTATE pState, PRTGETOPTUNION pValueUnion, uint32_t fFlags);
+
+/**
+ * Gets the pointer to the argv entry of the current non-option argument.
+ *
+ * This function ASSUMES the previous RTGetOpt() call returned
+ * VINF_GETOPT_NOT_OPTION and require RTGETOPTINIT_FLAGS_OPTS_FIRST to be
+ * specified to RTGetOptInit().
+ *
+ * @returns Pointer to the argv entry of the current non-option. NULL if
+ * (detectable) precondition isn't fullfilled (asserted)
+ * @param pState The state previously initialized with RTGetOptInit.
+ */
+RTDECL(char **) RTGetOptNonOptionArrayPtr(PRTGETOPTSTATE pState);
+
+/**
+ * Print error messages for a RTGetOpt default case.
+ *
+ * Uses RTMsgError.
+ *
+ * @returns Suitable exit code.
+ *
+ * @param ch The RTGetOpt return value.
+ * @param pValueUnion The value union returned by RTGetOpt.
+ */
+RTDECL(RTEXITCODE) RTGetOptPrintError(int ch, PCRTGETOPTUNION pValueUnion);
+
+/**
+ * Formats error messages for a RTGetOpt default case.
+ *
+ * @returns On success, positive count of formatted character excluding the
+ * terminator. On buffer overflow, negative number giving the required
+ * buffer size (including terminator char). (RTStrPrintf2 style.)
+ *
+ * @param pszBuf The buffer to format into.
+ * @param cbBuf The size of the buffer @a pszBuf points to.
+ * @param ch The RTGetOpt return value.
+ * @param pValueUnion The value union returned by RTGetOpt.
+ */
+RTDECL(ssize_t) RTGetOptFormatError(char *pszBuf, size_t cbBuf, int ch, PCRTGETOPTUNION pValueUnion);
+
+/**
+ * Parses the @a pszCmdLine string into an argv array.
+ *
+ * This is useful for converting a response file or similar to an argument
+ * vector that can be used with RTGetOptInit().
+ *
+ * This function aims at following the bourne shell string quoting rules.
+ *
+ * @returns IPRT status code.
+ *
+ * @param ppapszArgv Where to return the argument vector. This must be
+ * freed by calling RTGetOptArgvFreeEx or
+ * RTGetOptArgvFree.
+ * @param pcArgs Where to return the argument count.
+ * @param pszCmdLine The string to parse.
+ * @param fFlags A combination of the RTGETOPTARGV_CNV_XXX flags,
+ * except RTGETOPTARGV_CNV_UNQUOTED is not supported.
+ * @param pszSeparators String containing the argument separators. If NULL,
+ * then space, tab, line feed (\\n) and return (\\r)
+ * are used.
+ */
+RTDECL(int) RTGetOptArgvFromString(char ***ppapszArgv, int *pcArgs, const char *pszCmdLine, uint32_t fFlags,
+ const char *pszSeparators);
+
+/**
+ * Frees and argument vector returned by RTGetOptStringToArgv.
+ *
+ * @param papszArgv Argument vector. NULL is fine.
+ */
+RTDECL(void) RTGetOptArgvFree(char **papszArgv);
+
+/**
+ * Frees and argument vector returned by RTGetOptStringToArgv, taking
+ * RTGETOPTARGV_CNV_MODIFY_INPUT into account.
+ *
+ * @param papszArgv Argument vector. NULL is fine.
+ * @param fFlags The flags passed to RTGetOptStringToArgv.
+ */
+RTDECL(void) RTGetOptArgvFreeEx(char **papszArgv, uint32_t fFlags);
+
+/**
+ * Turns an argv array into a command line string.
+ *
+ * This is useful for calling CreateProcess on Windows, but can also be used for
+ * displaying an argv array.
+ *
+ * This function aims at following the bourn shell string quoting rules.
+ *
+ * @returns IPRT status code.
+ *
+ * @param ppszCmdLine Where to return the command line string. This must
+ * be freed by calling RTStrFree.
+ * @param papszArgv The argument vector to convert.
+ * @param fFlags A combination of the RTGETOPTARGV_CNV_XXX flags.
+ */
+RTDECL(int) RTGetOptArgvToString(char **ppszCmdLine, const char * const *papszArgv, uint32_t fFlags);
+
+/** @name RTGetOptArgvToString, RTGetOptArgvToUtf16String and
+ * RTGetOptArgvFromString flags
+ * @{ */
+/** Quote strings according to the Microsoft CRT rules. */
+#define RTGETOPTARGV_CNV_QUOTE_MS_CRT UINT32_C(0x00000000)
+/** Quote strings according to the Unix Bourne Shell. */
+#define RTGETOPTARGV_CNV_QUOTE_BOURNE_SH UINT32_C(0x00000001)
+/** Don't quote any strings at all. */
+#define RTGETOPTARGV_CNV_UNQUOTED UINT32_C(0x00000002)
+/** Mask for the quoting style. */
+#define RTGETOPTARGV_CNV_QUOTE_MASK UINT32_C(0x00000003)
+/** Allow RTGetOptArgvFromString to modifying the command line input string.
+ * @note Must use RTGetOptArgvFreeEx to free. */
+#define RTGETOPTARGV_CNV_MODIFY_INPUT UINT32_C(0x00000004)
+/** Valid bits. */
+#define RTGETOPTARGV_CNV_VALID_MASK UINT32_C(0x00000007)
+/** @} */
+
+/**
+ * Convenience wrapper around RTGetOpArgvToString and RTStrToUtf16.
+ *
+ * @returns IPRT status code.
+ *
+ * @param ppwszCmdLine Where to return the command line string. This must
+ * be freed by calling RTUtf16Free.
+ * @param papszArgv The argument vector to convert.
+ * @param fFlags A combination of the RTGETOPTARGV_CNV_XXX flags.
+ */
+RTDECL(int) RTGetOptArgvToUtf16String(PRTUTF16 *ppwszCmdLine, const char * const *papszArgv, uint32_t fFlags);
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_getopt_h */
+