C++ c++;Windows API递归搜索未返回预期目录
我目前正在尝试编写一个程序,使用windows.h中的实用程序递归搜索文件。当我执行以下代码时,文件路径会不断添加到上次搜索的文件路径中,但不会搜索文件夹,句柄也不会被标记为无效。这件事我已经烦了好几天了。为什么这不是递归搜索? 编辑:更正了使用位比较的代码。同样的错误也在发生C++ c++;Windows API递归搜索未返回预期目录,c++,winapi,recursion,C++,Winapi,Recursion,我目前正在尝试编写一个程序,使用windows.h中的实用程序递归搜索文件。当我执行以下代码时,文件路径会不断添加到上次搜索的文件路径中,但不会搜索文件夹,句柄也不会被标记为无效。这件事我已经烦了好几天了。为什么这不是递归搜索? 编辑:更正了使用位比较的代码。同样的错误也在发生 #include "stdafx.h" #include <iostream> #include <windows.h> // Microsoft Windows’ main libra
#include "stdafx.h"
#include <iostream>
#include <windows.h> // Microsoft Windows’ main library.
#include <tchar.h> // Needed for _TEXT macro.
#include "Strsafe.h" // Microsoft's library for secure strings.
using namespace std;
typedef wchar_t* LPWSTR, *PWSTR;
int layer = 0;
int recursionFindAbsraction(LPWSTR Dir, LPWSTR FilNam, LPWSTR filePath);
//original directory, new directory with *.* attached
//new directory with entire directory, new entire directory with *.* attached
int _tmain(int argc, _TCHAR* argv[])
{
wchar_t holder[MAX_PATH];//using this instead of string
wchar_t direct[MAX_PATH];
wchar_t filePath[MAX_PATH];
wcout << "Please enter the directory you wish to search: " << endl;
wcin >> direct;
wcout << direct << endl;
wcout << "Please enter the filename (program will automatically seach for all files like it): " << endl;
wcin >> holder;
wcout << holder << endl;
recursionFindAbsraction(direct, holder, filePath);
getchar();
getchar();
return 0;
}
int recursionFindAbsraction(LPWSTR Dir, LPWSTR FilNam, LPWSTR filePath){
WIN32_FIND_DATAW ptrFileData;
HANDLE hFile = NULL;
BOOL bGetNext = true;
wchar_t newDir[MAX_PATH];
wchar_t newDir2[MAX_PATH];
wchar_t filePathHolder[MAX_PATH];
//add slash then put directory into new variable, newDir
StringCchCatW(Dir, MAX_PATH, _TEXT("\\"));
//Here, we split the path to avoid appending *.* to the current directory
StringCchCopyW(filePathHolder, MAX_PATH, Dir);
StringCchCopyW(newDir, MAX_PATH, Dir);
StringCchCopyW(newDir2, MAX_PATH, Dir);
StringCchCatW(newDir2, MAX_PATH, _TEXT("*.*"));
hFile = FindFirstFile(newDir2, &ptrFileData);
if (hFile == INVALID_HANDLE_VALUE)
{
printf("FindFirstFile failed (%d)\n", GetLastError());
getchar();
//return 0;
}
while (bGetNext){
if ((ptrFileData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0)
{
int setLoop = (ptrFileData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN);
wcout << " file Attribute bitwise: " << setLoop;
wcout << "file hidden " << endl;
int counter = 0; counter++;
wcout << "counter: " << counter << endl;
wcout << "string compare: " << _wcsicmp(ptrFileData.cFileName, _TEXT("..")) << endl;
wcout << "filename: " << ptrFileData.cFileName << endl;
Sleep(100);
/*
if (_wcsicmp(ptrFileData.cFileName, _TEXT(".")) == 0){
wcout << "Breaking1. " << endl;
continue;
}
if (_wcsicmp(ptrFileData.cFileName, _TEXT("..")) == 0){
wcout << "Breaking2. " << endl;
continue;
}*/
}
else
{
if (_wcsicmp(ptrFileData.cFileName, FilNam) == 0){
wcout << "The first file found is: " << ptrFileData.cFileName << endl;
//_tprintf(TEXT("The first file found is %s\n"), ptrFileData.cFileName);
FindClose(hFile);
//getchar();
break;
}
if ((((ptrFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0)) && ((ptrFileData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) == 0))
{//must check to see if folder
layer++;
wcout << "Layer: " << layer << endl;
ptrFileData.cFileName;
//when this gets called because it's a folder, the name
//gets added to the wrong directory
StringCchCatW(newDir, MAX_PATH, ptrFileData.cFileName);
wcout << " newDir/fulldir: " << newDir<< endl;
//resolves full path name at this point
wcout << "filePathHolder from last else: " << filePathHolder << endl;
wcout << "filename: " << ptrFileData.cFileName << endl;
recursionFindAbsraction(newDir, FilNam, filePath);
}
}
wcout << "&ptrFileData: " << &ptrFileData << endl;
wcout << "hFile: " << hFile << endl;
bGetNext = FindNextFile(hFile, &ptrFileData);
wcout << " exit: " << bGetNext<< endl;
}
FindClose(hFile);
return 0;
}
#包括“stdafx.h”
#包括
#包括//Microsoft Windows的主库。
#包含_TEXT宏所需的//。
#包括“Strsafe.h”//Microsoft的安全字符串库。
使用名称空间std;
类型定义wchar_t*LPWSTR,*PWSTR;
int层=0;
int recursionFindAbsraction(LPWSTR Dir、LPWSTR FilNam、LPWSTR filePath);
//原始目录,附加了*.*的新目录
//新目录包含整个目录,新的完整目录包含*
int _tmain(int argc,_TCHAR*argv[]
{
wchar_t holder[MAX_PATH];//使用此选项而不是字符串
wchar_t direct[最大路径];
wchar_t文件路径[最大路径];
直接输出;
wcout这里是一个简单的递归搜索示例。注意,它使用do{…}while(…);
,这使得跳到循环的末尾更容易
void findfile_recursive(const std::wstring &folder, const std::wstring &filename, std::vector<std::wstring> &files)
{
std::wstring wildcard = folder + L"\\*";
WIN32_FIND_DATA fd;
HANDLE handle = FindFirstFile(wildcard.c_str(), &fd);
if (handle == INVALID_HANDLE_VALUE)
return;
do
{
if (wcscmp(fd.cFileName, L".") == 0 || wcscmp(fd.cFileName, L"..") == 0)
continue;
std::wstring path = folder + L"\\" + std::wstring(fd.cFileName);
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
findfile_recursive(path, filename, files);
else if (_wcsicmp(fd.cFileName, filename.c_str()) == 0)
files.push_back(path);
} while (FindNextFile(handle, &fd));
FindClose(handle);
}
int _tmain(int, wchar_t*[])
{
std::vector<std::wstring> files;
findfile_recursive(L"c:\\test", L"file.txt", files);
for (auto file : files)
std::wcout << file << endl;
}
FindFirstFile
总是首先返回
和.
的条目,因此您对的测试如果(\u wcsicmp(ptrFileData.cFileName,\u TEXT(“.”)==0)
将导致您立即跳出循环。您可能还希望使用&
而不是=
来测试属性,因为一次设置多个属性标志是很常见的。我没有使用WIN32\u FIND\u DATAW
结构/类,但我确信您不应该比较.dwfileattrib直接使用FILE\u ATTRIBUTE\u DIRECTORY
属性,就像您不应该直接将其与FILE\u ATTRIBUTE\u HIDDEN
进行比较一样。我敢打赌,这些是dwFileAttributes位字段(或int)中的标志,您应该检查dwFileAttributes字段中的每个位是否已启用。如((ptrFileData.dwFileAttributes和文件属性目录)!=0)和((ptrFileData.dwFileAttributes和文件属性隐藏)==0)
但是如果你检查更多关于这方面的信息,那就更好了……对于ANSI字符集的构建,代码一般不能工作。因此,t
的内容只是增加了冗长和复杂的内容。此外,你找不到Windows 9x安装来尝试ANSI构建。你一直附加到newDir
,所以你找到的第二个目录将附加一个在第一个目录之后。可能不是你想要的。是的!从逻辑上讲,这就是我试图做的,但我在我的控制语句中迷失了方向。谢谢!
int recursionFindAbsraction(LPWSTR Dir, LPWSTR FilNam, LPWSTR filePath)
{
...
//while (bGetNext)***
do
{
if (wcscmp(ptrFileData.cFileName, L".") == 0 || wcscmp(ptrFileData.cFileName, L"..") == 0)
continue;
if (ptrFileData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
continue;//***skip hidden files and directories
if (ptrFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
//***wrong redirection:
//StringCchCatW(newDir, MAX_PATH, ptrFileData.cFileName);
//***change to:
StringCchCopyW(newDir, MAX_PATH, Dir);
StringCchCatW(newDir, MAX_PATH, ptrFileData.cFileName);
recursionFindAbsraction(newDir, FilNam, filePath);
}
else if (_wcsicmp(ptrFileData.cFileName, FilNam) == 0)
{
std::wcout << "The first file found is: " << Dir << ptrFileData.cFileName << endl;
}
} while (FindNextFile(hFile, &ptrFileData));//***
FindClose(hFile);
return 0;
}