rainmeter-studio/Plugins/PluginFolderInfo/FolderInfo.cpp

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#include "FolderInfo.h"
#include <windows.h>
#include <list>
namespace PluginFolderInfo {
FolderInfo::FolderInfo(const wchar_t* aPath)
{
mySubFolderFlag = false;
myHiddenFileFlag = false;
mySystemFileFlag = false;
myRegExpFilter = NULL;
myRegExpFilterExtra = NULL;
myLastUpdateTime = 0;
Clear();
SetPath(aPath);
}
void FolderInfo::Clear()
{
mySize = 0;
myFileCount = 0;
myFolderCount = 0;
}
void FolderInfo::SetPath(const wchar_t* aPath)
{
if (!aPath || 0 == aPath[0]) {
myPath = L"";
return;
}
myPath = aPath;
if (myPath[myPath.size() - 1] != L'\\') {
myPath += L"\\";
}
}
void FolderInfo::Update()
{
Clear();
if (myPath.length() == 0) {
return;
}
CalculateSize();
myLastUpdateTime = GetTickCount();
}
void FolderInfo::CalculateSize()
{
std::list<std::wstring> folderQueue;
folderQueue.push_back(myPath.c_str());
wchar_t searchPattern[MAX_PATH + 10];
wchar_t buffer[MAX_PATH];
char utf8Buf[MAX_PATH * 3];
WIN32_FIND_DATA findData;
HANDLE findHandle;
while (!folderQueue.empty()) {
std::list<std::wstring>::reference ref = folderQueue.front();
wsprintf(searchPattern, L"%s%s", ref.c_str(), L"\\*.*");
findHandle = ::FindFirstFile(searchPattern, &findData);
if (INVALID_HANDLE_VALUE == findHandle) {
folderQueue.pop_front();
continue;
}
do {
// special case for "." and ".."
if (_wcsicmp(findData.cFileName, L".") == 0 ||
_wcsicmp(findData.cFileName, L"..") == 0) {
continue;
}
bool isFolder = (findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) > 0;
if (!myHiddenFileFlag && (findData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)) {
continue;
}
else if (!mySystemFileFlag && (findData.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM)) {
continue;
}
else if (!isFolder && myRegExpFilter) {
int utf8BufLen = WideCharToMultiByte(CP_UTF8, 0, findData.cFileName, wcslen(findData.cFileName) + 1, utf8Buf, MAX_PATH * 3, NULL, NULL);
if (0 != pcre_exec(myRegExpFilter, myRegExpFilterExtra, utf8Buf, utf8BufLen, 0, 0, NULL, 0)) {
continue;
}
}
if (isFolder) {
myFolderCount++;
if (mySubFolderFlag) {
wsprintf(buffer, L"%s\\%s", ref.c_str(), findData.cFileName);
folderQueue.push_back(buffer);
}
}
else {
myFileCount++;
mySize += ((UINT64)findData.nFileSizeHigh << 32) + findData.nFileSizeLow;
}
}
while (::FindNextFile(findHandle, &findData));
FindClose(findHandle);
folderQueue.pop_front();
}
}
void FolderInfo::SetRegExpFilter(const wchar_t* aFilter)
{
if (myRegExpFilter) {
pcre_free(myRegExpFilter);
myRegExpFilter = NULL;
myRegExpFilterExtra = NULL;
}
if (aFilter == NULL) {
return;
}
int filterLen = wcslen(aFilter) + 1;
int bufLen = WideCharToMultiByte(CP_UTF8, 0, aFilter, filterLen, NULL, 0, NULL, NULL);
char* buf = new char[bufLen];
WideCharToMultiByte(CP_UTF8, 0, aFilter, filterLen, buf, bufLen, NULL, NULL);
const char* error;
int erroffset;
myRegExpFilter = pcre_compile(buf, PCRE_UTF8, &error, &erroffset, NULL);
if (myRegExpFilter) {
myRegExpFilterExtra = pcre_study(myRegExpFilter, 0, &error);
}
}
} // namespace PluginFolderInfo