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#include "stdafx.h"
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#include "FileMgr.h"
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CFileMgr::CFileMgr()
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{
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}
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CFileMgr::~CFileMgr()
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{
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}
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void CFileMgr::ReadFileToStrVec(const std::string& filePath, std::vector<std::vector<std::string>>& data) {
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std::ifstream file(filePath, std::ios::in | std::ios::binary);
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if (!file.is_open()) {
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return;
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}
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// <20><>ȡ<EFBFBD>ļ<EFBFBD><C4BC>Ĵ<EFBFBD>С
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file.seekg(0, std::ios::end);
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size_t fileSize = file.tellg();
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file.seekg(0, std::ios::beg);
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// <20><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD>䵽<EFBFBD>ڴ<EFBFBD>
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char* fileBuffer = new char[fileSize];
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file.read(fileBuffer, fileSize);
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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char* lineStart = fileBuffer;
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char* lineEnd = nullptr;
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size_t rowIndex = 0;
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while ((lineEnd = std::find(lineStart, fileBuffer + fileSize, '\n')) != fileBuffer + fileSize) {
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std::vector<std::string> row;
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char* valueStart = lineStart;
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char* valueEnd = nullptr;
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// <20>ָǰ<EEB5B1><C7B0>
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while ((valueEnd = std::find(valueStart, lineEnd, ',')) != lineEnd) {
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row.emplace_back(std::string(valueStart, valueEnd));
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valueStart = valueEnd + 1;
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֶ<EFBFBD>
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row.emplace_back(std::string(valueStart, lineEnd));
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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data.push_back(row);
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// <20>ƶ<EFBFBD><C6B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
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lineStart = lineEnd + 1;
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++rowIndex;
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}
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// <20><><EFBFBD><EFBFBD>
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delete[] fileBuffer;
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file.close();
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}
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