185 lines
4.2 KiB
C
185 lines
4.2 KiB
C
/*++
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*
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* WOW v1.0
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*
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* Copyright (c) 1993, Microsoft Corporation
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*
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* WIN.C
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* Simple WIN.COM which spawns program given on command line.
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* This allows DOS install which run "win appname" to work.
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*
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* History:
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* Created 29-Mar-1993 Dave Hart (davehart)
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* 20-Jul-1994 Dave Hart (davehart) Changed from console to windows app.
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--*/
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#include <windows.h>
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//
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// Support for debug output disabled for build (no console).
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// DPRINTF macro must be used with two sets of parens:
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// DPRINTF(("Hello %s\n", szName));
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//
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#if 0
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#include <stdio.h>
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#define DPRINTF(args) printf args
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#else
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#define DPRINTF(args)
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#endif
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//
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// SKIP_BLANKS -- Handy macro to skip blanks.
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//
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#define SKIP_BLANKS(pch) {while (' ' == *(pch)) { (pch)++; }}
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//
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// SKIP_NONBLANKS -- Handy macro to skip everything but blanks.
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//
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#define SKIP_NONBLANKS(pch) {while (*(pch) && ' ' != *(pch)) { (pch)++; }}
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//
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// WinMain
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//
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int WinMain(
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HINSTANCE hInst,
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HINSTANCE hPrevInst,
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LPSTR pszCommandLine,
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int nCmdShow
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)
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{
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char *psz;
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BOOL fSuccess;
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DWORD dwExitCode;
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STARTUPINFO si;
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PROCESS_INFORMATION pi;
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DPRINTF(("win.com: Command line is '%s'.\n", pszCommandLine));
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//
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// Throw away any switches on the command line. The command line
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// looks like:
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//
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// win [/r] [/2] [/s] [/3] [/n] [winapp winapp-args]
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//
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// So we'll go into a loop of skipping all words that begin with
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// "/" or "-" until we hit a word that doesn't start with either,
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// which is presumably the winapp name.
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//
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psz = pszCommandLine;
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SKIP_BLANKS(psz);
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//
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// psz now points to either the first word of our command
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// line ("win" not included), or to a null terminator if
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// we were invoked without arguments.
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//
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while ('-' == *psz || '/' == *psz) {
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SKIP_NONBLANKS(psz);
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//
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// psz now points to either a space or the null terminator.
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//
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SKIP_BLANKS(psz);
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//
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// psz now points to either the beginning of the next word
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// on the command line, or the null terminator.
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//
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}
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if (!(*psz)) {
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//
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// If psz now points to a null terminator, then win.com was invoked
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// either without arguments or all arguments were switches that we
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// skipped above. So there's nothing to do!
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//
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return 0;
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}
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DPRINTF(("win.com: Invoking '%s'.\n", psz));
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//
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// Run that program.
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//
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RtlZeroMemory(&si, sizeof(si));
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si.cb = sizeof(si);
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si.dwFlags = STARTF_USESHOWWINDOW | STARTF_FORCEONFEEDBACK;
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si.wShowWindow = (WORD) nCmdShow;
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fSuccess = CreateProcess(
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NULL, // image name (in the command line instead)
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psz, // command line (begins with image name)
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NULL, // lpsaProcess
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NULL, // lpsaThread
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FALSE, // no handle inheritance
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0, // dwCreateOptions
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NULL, // pointer to environment
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NULL, // pointer to curdir
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&si, // startup info struct
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&pi // process information (gets handles)
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);
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if (!fSuccess) {
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dwExitCode = GetLastError();
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DPRINTF(("CreateProcess fails with error %d.\n", dwExitCode));
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return dwExitCode;
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}
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//
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// Close the thread handle, we're only using the process handle.
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//
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CloseHandle(pi.hThread);
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//
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// Wait for the process to terminate and return its exit code as
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// our exit code.
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//
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if (0xffffffff == WaitForSingleObject(pi.hProcess, INFINITE)) {
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dwExitCode = GetLastError();
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DPRINTF(("WaitForSingleObject(hProcess, INFINITE) fails with error %d.\n",
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dwExitCode));
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goto Cleanup;
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}
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if (!GetExitCodeProcess(pi.hProcess, &dwExitCode)) {
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dwExitCode = GetLastError();
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DPRINTF(("GetExitCodeProcess() fails with error %d.\n", dwExitCode));
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goto Cleanup;
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}
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DPRINTF(("win.com: Returning child's exit code (%d)\n", dwExitCode));
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Cleanup:
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CloseHandle(pi.hProcess);
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return dwExitCode;
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}
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