rapifind.cpp

WinCE编程第三版收录的所有源代码（非常适合学习时

//====================================================================
// RapiFind - Searches for a file or files on a Windows CE system
//
// Written for the book Programming Windows CE
// Copyright (C) 2003 Douglas Boling
//====================================================================
#include <windows.h>                 // For all that Windows stuff
#include <stdio.h>
#include "rapi.h"                    // RAPI includes

//====================================================================
// main - Program entry point
//
int main (int argc, char **argv) {
    RAPIINIT ri;
    char szSrch[MAX_PATH], *pPtr;
    WCHAR szwDir[MAX_PATH];
    WCHAR szName[MAX_PATH];
    DWORD i, dwTotal = 0, dwFiles = 0, dwIn, dwOut, cbBytes;
    IRAPIStream *pIRAPIStream;
    PBYTE pInput, pOut;
    HRESULT hr;
    INT rc, nCmd, nSize;

    // If no argument, fail.
    if (argc < 2) {
        printf ("\r\nUSAGE: %s <search spec>\r\n\r\n", argv[0]);
        return -1;
    }
    lstrcpy (szSrch, argv[1]);

    // Call RapiInitEx to asynchronously start RAPI session.
    ri.cbSize = sizeof (ri);
    rc = CeRapiInitEx (&ri);
     if (rc != NOERROR) {
        printf (TEXT ("Rapi Initialization failed\r\n"));
        return 0;
    }
    // Wait 5 seconds for connect.
    rc = WaitForSingleObject (ri.heRapiInit, 5000);
    if (rc == WAIT_OBJECT_0) {
        if (ri.hrRapiInit != NOERROR) {
            printf (TEXT ("Rapi Initialization failed\r\n"));
            return 0;
        }
    } else if (rc == WAIT_TIMEOUT) {
        printf (TEXT ("Rapi Initialization timed out.\r\n"));
        return 0;
    }
    // Point to end of name.
    pPtr = szSrch + lstrlen (szSrch) - 1;

    // Strip any trailing backslash.
    if (*pPtr == '\\')
        *pPtr = '\0';

    // Look for wildcards in filename. pPtr points to string end.
    for (i = 0; (pPtr >= szSrch) && (*pPtr != '\\'); pPtr--) {
        if ((*pPtr == '*') || (*pPtr == '?'))
            i++;
    }
    if (pPtr <= szSrch) {
        lstrcpy (szSrch, TEXT ("\\"));
        lstrcat (szSrch, argv[1]);
    }

    if (i) {
        printf (TEXT ("\r\n Searching for %s\r\n\r\n"), pPtr+1);
    } else
        printf (TEXT ("\r\n Searching in %s\r\n\r\n"), szSrch);

    // No wildcards, append *.*
    if (i == 0)
        lstrcat (szSrch, "\\*.*");

    // Convert ANSI string to Unicode.  At the same time, copy it
    // into a discardable buffer for CeRapiInvoke.
    dwIn = lstrlen (szSrch) + 1;  //Make mbstowcs convert terminating 0.

    pInput = (PBYTE)LocalAlloc (LPTR, dwIn * sizeof (WCHAR));
    if (!pInput) {
        printf (TEXT ("\r\nOut of memory\r\n"));
        return -1;
    }
    mbstowcs ((LPWSTR)pInput, szSrch, dwIn);
    dwIn *= sizeof (WCHAR);

    // RAPI call
    hr = CeRapiInvoke (L"FindSrv", L"RAPIFindFile", dwIn,
                       pInput, &dwOut, &pOut, &pIRAPIStream, 0);
    if (hr == S_OK) {
        // Read command.
        pIRAPIStream->Read (&nCmd, sizeof (nCmd), &cbBytes);
        while (nCmd) {
            switch (nCmd) {
            // Display found file.
            case 1:
                // Read length of file.
                pIRAPIStream->Read (&i, sizeof (i), &cbBytes);
                dwTotal += i;
                dwFiles++;

                // Read length of filename.
                pIRAPIStream->Read (&nSize, sizeof (nSize), &cbBytes);
                // Read name itself.
                pIRAPIStream->Read (szName, nSize, &cbBytes);

                // Print directory and name.
                printf (TEXT ("%9d\t%S%S\r\n"), i, szwDir, szName);
                break;

            // Display name of directory we're currently searching.
            case 2:
                // Read and discard dummy length value.
                pIRAPIStream->Read (&nSize, sizeof (nSize), &cbBytes);
                // Read length of directory.
                pIRAPIStream->Read (&nSize, sizeof (nSize), &cbBytes);
                // Read directory name itself.
                pIRAPIStream->Read (szwDir, nSize, &cbBytes);
                break;
            }
            // Read next command.
            pIRAPIStream->Read (&nCmd, sizeof (nCmd), &cbBytes);
        }
        pIRAPIStream->Release ();
    } else if (hr == ERROR_FILE_NOT_FOUND)
        printf (TEXT ("The RAPI server DLL FindSrv could not be found \
                       on the CE target device.\r\n"));
    else
        printf (TEXT ("CeRapiInvoke returned %d"), hr);

    printf (TEXT ("\r\nFound %d file(s). Total of %d bytes.\r\n\r\n"),
            dwFiles, dwTotal);

    // Clean up by uninitializing RAPI.
    CeRapiUninit ();
    return 0;
}