[英]Boost directory iterator “no such file or directory”
我使用boost :: filesystem :: directory_iterator迭代文件夾的內容(非遞歸)並計算文件夾中有多少元素。 我能夠迭代整個文件夾,但是當boost :: filesystem :: directory_iterator前進到結束迭代器時會拋出一個錯誤:
libc++abi.dylib: terminating with uncaught exception of type boost::filesystem::filesystem_error: boost::filesystem::directory_iterator::construct: No such file or directory
我沒有看到我在這段代碼中錯誤地使用目錄迭代器,這是拋出錯誤的代碼:
boost::filesystem::path pcdFileDir(getPCDFilePath().string().substr(0, getPCDFilePath().string().find_last_of(boost::filesystem::path::preferred_separator)));
std::cout << "pcdFileDirectory: " << pcdFileDir.string() << std::endl;
size_t file_count = 0;
for(boost::filesystem::directory_iterator itr(pcdFileDir); itr != boost::filesystem::directory_iterator(); ++itr){
std::cout << itr->path() << std::endl;
file_count++;
}
return file_count;
}
pcdDir的值為../out/autzen。 在../out/autzen中有54個文件夾,其中包含模式autzen_1,autzen_2等和autzen.pcd之后的pcd文件。 for循環中print語句的輸出如下:
"../out/autzen/autzen.pcd"
"../out/autzen/autzen_1"
"../out/autzen/autzen_10"
"../out/autzen/autzen_11"
"../out/autzen/autzen_12"
"../out/autzen/autzen_13"
"../out/autzen/autzen_14"
"../out/autzen/autzen_15"
"../out/autzen/autzen_16"
"../out/autzen/autzen_17"
"../out/autzen/autzen_18"
"../out/autzen/autzen_19"
"../out/autzen/autzen_2"
"../out/autzen/autzen_20"
"../out/autzen/autzen_21"
"../out/autzen/autzen_22"
"../out/autzen/autzen_23"
"../out/autzen/autzen_24"
"../out/autzen/autzen_25"
"../out/autzen/autzen_26"
"../out/autzen/autzen_27"
"../out/autzen/autzen_28"
"../out/autzen/autzen_29"
"../out/autzen/autzen_3"
"../out/autzen/autzen_30"
"../out/autzen/autzen_31"
"../out/autzen/autzen_32"
"../out/autzen/autzen_33"
"../out/autzen/autzen_34"
"../out/autzen/autzen_35"
"../out/autzen/autzen_36"
"../out/autzen/autzen_37"
"../out/autzen/autzen_38"
"../out/autzen/autzen_39"
"../out/autzen/autzen_4"
"../out/autzen/autzen_40"
"../out/autzen/autzen_41"
"../out/autzen/autzen_42"
"../out/autzen/autzen_43"
"../out/autzen/autzen_44"
"../out/autzen/autzen_45"
"../out/autzen/autzen_46"
"../out/autzen/autzen_47"
"../out/autzen/autzen_48"
"../out/autzen/autzen_49"
"../out/autzen/autzen_5"
"../out/autzen/autzen_50"
"../out/autzen/autzen_51"
"../out/autzen/autzen_52"
"../out/autzen/autzen_53"
"../out/autzen/autzen_54"
"../out/autzen/autzen_6"
"../out/autzen/autzen_7"
"../out/autzen/autzen_8"
"../out/autzen/autzen_9"
如您所見,它正確覆蓋了文件夾中的每個元素。
編輯:使用@Chris_Stathis建議的基於范圍的for循環,具有確切的語法:
for(auto &file : boost::filesystem::directory_iterator(pcdFileDir)){
std::cout << file.path() << std::endl;
file_count++;
}
不解決錯誤。
我遇到了同樣的問題,起初提升時拋出與你相同的錯誤然后開始拋出std :: bad_alloc。 我分兩步解決了這個問題。
我懷疑解決問題的關鍵是第2步。
對我來說這個問題是因為我編譯了 - D_GLIBCXX_USE_CXX11_ABI=0
從CXXFLAGS
刪除它解決了這個問題。
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