xref: /ndk/sources/host-tools/toolbox/echo_win.c

/*
 * Copyright (C) 2011 The Android Open Source Project
 * 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.
 *
 * 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.
 */

/* To avoid many issues, always build this as a Unicode program */
#define UNICODE 1
#define _UNICODE 1
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <stdlib.h>

/* A brain-dead 'echo' toolbox program for Windows, because the cmd.exe
 * 'echo' command is too weird to be usable with the NDK.
 */

int main(void)
{
    int flagNoNewline = 0;
    int argc;
    TCHAR** argv = CommandLineToArgvW(GetCommandLine(), &argc);

    int nn;

    /* IMPORTANT: echo should only accept -n as a first option, everything
     * else must be treated as part of the input string.
     */
    if (argc > 1 && argv[1][0] == L'-' && argv[1][1] == L'n' && argv[1][2] == L'\0') {
        flagNoNewline = 1;
        argc--;
        argv++;
    }

    const TCHAR* comma = L"";
    while (argc > 1) {
        _tprintf(L"%s%s", comma, argv[1]);
        comma = L" ";
        argc--;
        argv++;
    }

    if (!flagNoNewline)
        _tprintf(L"\n");

    return 0;
}