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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* os_win16.c
*
* Win16 (Windows 3.1x) system-dependent routines.
* Carved brutally from os_win32.c by Vince Negri <vn@aslnet.co.uk>
*/
#ifdef __BORLANDC__
# pragma warn -par
# pragma warn -ucp
# pragma warn -use
# pragma warn -aus
# pragma warn -obs
#endif

#include "vim.h"

#include <dos.h>
#include <string.h>
#include <sys/types.h>
#include <signal.h>
#include <limits.h>
#include <process.h>

#undef chdir
#include <direct.h>
#include <shellapi.h> /* required for FindExecutable() */


/* Record all output and all keyboard & mouse input */
/* #define MCH_WRITE_DUMP */

#ifdef MCH_WRITE_DUMP
FILE* fdDump = NULL;
#endif


/*
* When generating prototypes for Win32 on Unix, these lines make the syntax
* errors disappear. They do not need to be correct.
*/
#ifdef PROTO
typedef int HANDLE;
typedef int SMALL_RECT;
typedef int COORD;
typedef int SHORT;
typedef int WORD;
typedef int DWORD;
typedef int BOOL;
typedef int LPSTR;
typedef int LPTSTR;
typedef int KEY_EVENT_RECORD;
typedef int MOUSE_EVENT_RECORD;
# define WINAPI
typedef int CONSOLE_CURSOR_INFO;
typedef char * LPCSTR;
# define WINBASEAPI
typedef int INPUT_RECORD;
# define _cdecl
#endif

#ifdef __BORLANDC__
/* being a more ANSI compliant compiler, BorlandC doesn't define _stricoll:
* but it does in BC 5.02! */
# if __BORLANDC__ < 0x502
int _stricoll(char *a, char *b);
# endif
#endif

/* cproto doesn't create a prototype for main() */
int _cdecl
VimMain
__ARGS((int argc, char **argv));
static int (_cdecl *pmain)(int, char **);

#ifndef PROTO
void _cdecl SaveInst(HINSTANCE hInst);
static void (_cdecl *pSaveInst)(HINSTANCE);

int WINAPI
WinMain(
    HINSTANCE hInstance,
    HINSTANCE hPrevInst,
    LPSTR lpszCmdLine,
    int nCmdShow)
{
    int argc;
    char **argv;
    char *tofree;
    char prog[256];

    /*
* Ron: added full path name so that the $VIM variable will get set to our
* startup path (so the .vimrc file can be found w/o a VIM env. var.)
* Remove the ".exe" extension, and find the 1st non-space.
*/
    GetModuleFileName(hInstance, prog, 255);
    if (*prog != NUL)
exe_name = FullName_save((char_u *)prog, FALSE);

    /* Separate the command line into arguments. */
    argc = get_cmd_args(prog, (char *)lpszCmdLine, &argv, &tofree);
    if (argc == 0)
    {
/* Error message? */
return 0;
    }

    pSaveInst = SaveInst;
    pmain = VimMain;
    pSaveInst(hInstance);
    pmain(argc, argv);

    free(argv);
    if (tofree != NULL)
free(tofree);

    return 0;
}
#endif






#ifdef FEAT_MOUSE

/*
* For the GUI the mouse handling is in gui_w32.c.
*/
    void
mch_setmouse(
    int on)
{
}
#endif /* FEAT_MOUSE */



/*
* GUI version of mch_init().
*/
    void
mch_init()
{
    extern int _fmode;


    /* Let critical errors result in a failure, not in a dialog box. Required
* for the timestamp test to work on removed floppies. */
    SetErrorMode(SEM_FAILCRITICALERRORS);

    _fmode = O_BINARY; /* we do our own CR-LF translation */

    /* Specify window size. Is there a place to get the default from? */
    Rows = 25;
    Columns = 80;


    set_option_value((char_u *)"grepprg", 0, (char_u *)"grep -n", 0);

#ifdef FEAT_CLIPBOARD
    clip_init(TRUE);

    /*
* Vim's own clipboard format recognises whether the text is char, line,
* or rectangular block. Only useful for copying between two Vims.
* "VimClipboard" was used for previous versions, using the first
* character to specify MCHAR, MLINE or MBLOCK.
*/
    clip_star.format = RegisterClipboardFormat("VimClipboard2");
    clip_star.format_raw = RegisterClipboardFormat("VimRawBytes");
#endif
}



/*
* Do we have an interactive window?
*/
    int
mch_check_win(
    int argc,
    char **argv)
{
    return OK; /* GUI always has a tty */
}


/*
* return process ID
*/
    long
mch_get_pid()
{
    return (long)GetCurrentTask();
}


/*
* Specialised version of system().
* This version proceeds as follows:
* 1. Start the program with WinExec
* 2. Wait for the module use count of the program to go to 0
* (This is the best way of detecting the program has finished)
*/

    static int
mch_system(char *cmd, int options)
{
    DWORD ret = 0;
    UINT wShowWindow;
    UINT h_module;
    MSG msg;
    BOOL again = TRUE;

    /*
* It's nicer to run a filter command in a minimized window, but in
*/
    if (options & SHELL_DOOUT)
wShowWindow = SW_SHOWMINIMIZED;
    else
wShowWindow = SW_SHOWNORMAL;

    /* Now, run the command */
    h_module = WinExec((LPCSTR)cmd, wShowWindow);

    if (h_module < 32)
    {
/*error*/
ret = -h_module;
    }
    else
    {
/* Wait for the command to terminate before continuing */
while (GetModuleUsage((HINSTANCE)h_module) > 0 && again )
{
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) && again)
{
if (msg.message == WM_QUIT)

{
PostQuitMessage(msg.wParam);
again = FALSE;
}
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
    }

    return ret;
}

/*
* Either execute a command by calling the shell or start a new shell
*/
    int
mch_call_shell(
    char_u *cmd,
    int options) /* SHELL_, see vim.h */
{
    int x;
    int tmode = cur_tmode;

    out_flush();


#ifdef MCH_WRITE_DUMP
    if (fdDump)
    {
fprintf(fdDump, "mch_call_shell(\"%s\", %d)\n", cmd, options);
fflush(fdDump);
    }
#endif

    /*
* Catch all deadly signals while running the external command, because a
* CTRL-C, Ctrl-Break or illegal instruction might otherwise kill us.
*/
    signal(SIGINT, SIG_IGN);
    signal(SIGILL, SIG_IGN);
    signal(SIGFPE, SIG_IGN);
    signal(SIGSEGV, SIG_IGN);
    signal(SIGTERM, SIG_IGN);
    signal(SIGABRT, SIG_IGN);

    if (options & SHELL_COOKED)
settmode(TMODE_COOK); /* set to normal mode */

    if (cmd == NULL)
    {
x = mch_system(p_sh, options);
    }
    else
    {
/* we use "command" or "cmd" to start the shell; slow but easy */
char_u *newcmd;

newcmd = lalloc(
STRLEN(p_sh) + STRLEN(p_shcf) + STRLEN(cmd) + 10, TRUE);
if (newcmd != NULL)
{
if (STRNICMP(cmd, "start ", 6) == 0)
{
sprintf((char *)newcmd, "%s\0", cmd+6);
if (WinExec((LPCSTR)newcmd, SW_SHOWNORMAL) > 31)
x = 0;
else
x = -1;
}
else
{
sprintf((char *)newcmd, "%s%s %s %s",
"",
p_sh,
p_shcf,
cmd);
x = mch_system((char *)newcmd, options);
}
vim_free(newcmd);
}
    }

    if (tmode == TMODE_RAW)
settmode(TMODE_RAW); /* set to raw mode */

    if (x && !(options & SHELL_SILENT) && !emsg_silent)
    {
smsg(_("shell returned %d"), x);
msg_putchar('\n');
    }
#ifdef FEAT_TITLE
    resettitle();
#endif

    signal(SIGINT, SIG_DFL);
    signal(SIGILL, SIG_DFL);
    signal(SIGFPE, SIG_DFL);
    signal(SIGSEGV, SIG_DFL);
    signal(SIGTERM, SIG_DFL);
    signal(SIGABRT, SIG_DFL);


    return x;
}


/*
* Delay for half a second.
*/
    void
mch_delay(
    long msec,
    int ignoreinput)
{
#ifdef MUST_FIX
    Sleep((int)msec); /* never wait for input */
#endif
}


/*
* check for an "interrupt signal": CTRL-break or CTRL-C
*/
    void
mch_breakcheck()
{
    /* never used */
}


/*
* How much memory is available in Kbyte?
*/
    long_u
mch_avail_mem(
    int special)
{
    return GetFreeSpace(0) >> 10;
}


/*
* Like rename(), returns 0 upon success, non-zero upon failure.
* Should probably set errno appropriately when errors occur.
*/
    int
mch_rename(
    const char *pszOldFile,
    const char *pszNewFile)
{

    /*
* No need to play tricks, this isn't rubbish like Windows 95 <g>
*/
    return rename(pszOldFile, pszNewFile);

}

/*
* Get the default shell for the current hardware platform
*/
    char*
default_shell()
{
    char* psz = NULL;

    psz = "command.com";

    return psz;
}
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