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59 lines
1.4 KiB
59 lines
1.4 KiB
2 years ago
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#pragma once
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#include <deque>
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#include <functional>
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#include <sstream>
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#include <string>
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#include "ff.h"
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namespace database {
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static_assert(sizeof(TCHAR) == sizeof(char), "TCHAR must be CHAR");
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template <typename Callback>
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auto FindFiles(FATFS* fs, const std::string& root, Callback cb) -> void {
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std::deque<std::string> to_explore;
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to_explore.push_back(root);
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while (!to_explore.empty()) {
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std::string next_path_str = to_explore.front();
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const TCHAR* next_path = static_cast<const TCHAR*>(next_path_str.c_str());
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DIR dir;
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FRESULT res = f_opendir(&dir, next_path);
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if (res != FR_OK) {
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// TODO: log.
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continue;
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}
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for (;;) {
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FILINFO info;
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res = f_readdir(&dir, &info);
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if (info.fname == NULL) {
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// No more files in the directory.
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break;
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} else if (info.fattrib & (AM_HID | AM_SYS)) {
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// System or hidden file. Ignore it and move on.
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continue;
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} else {
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std::stringstream full_path;
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full_path << next_path_str << "/" << info.fname;
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if (info.fattrib & AM_DIR) {
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// This is a directory. Add it to the explore queue.
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to_explore.push_back(full_path.str());
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} else {
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// This is a file! Let the callback know about it.
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std::invoke(cb, full_path.str(), info);
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}
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}
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}
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f_closedir(&dir);
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to_explore.pop_front();
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}
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}
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} // namespace database
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