C++ 分析歌词(LRC)文件

初学C++,练习代码

#include "stdafx.h"#include <iostream>#include <fstream>using namespace std;/***简单歌词分析:**根据开始时间和结束时间 来显示*/void readLyric(string fileName);void analysisOneLine(string str);void printLyric();void getLyricHeader(string str);int  changeStringToInt(string str_time);void timeSort();const int MAX_LYRIC_LINE_NUM =200;const int MAX_LYRCE_REPEAT_NUM = 10;string header[] = {"ai:", "ar:", "al:", "by:"};int lineNum = 0;string Lheader[4];struct OneLineLyric{    int lineNum;    string startTime;    string endTime;    string lyricContent;} lyric[MAX_LYRIC_LINE_NUM ]; //动态分配最好void readLyric(string fileName){    ifstream fin;    fin.open(fileName);    if(!fin.is_open())    {        cerr << "文件读取失败!\n";        exit(0);    }    string str;    getline(fin, str);    while(fin)    {        if(str != "")        {            analysisOneLine(str);        }        getline(fin, str);    }    fin.close();    printLyric();}//分析一行 保存到结构体数组void analysisOneLine(string str){    if(str[0] != '[')    {        cout << "歌词文件格式不正规!\n";    }    //歌词说明 ti:歌曲名称 ar:演唱者 al: by: 制作单位getLyricHeader(str);    int m, n, p = 0;    string timeTemp[MAX_LYRCE_REPEAT_NUM];//保存信息    m = str.find_first_of('[');    n = str.find_first_of(']');    while(m >= 0 && m <= str.length() && n >= 0 && n <= str.length() && str != "")    {        timeTemp[p] = str.substr(m + 1, n - 1);        p++;        str = str.substr(n + 1, str.length());        m = str.find_first_of('[');        n = str.find_first_of(']');    }    string contentTemp = str;    for(int i = 0; i < p; i++)    {        if(lineNum == 1)        {            cout << endl;        }        lyric[lineNum].startTime = timeTemp[i];        if(timeTemp[i + 1] != "") //连续的        {            lyric[lineNum].endTime = timeTemp[i + 1];            cout << timeTemp[i] << endl;        }        if(lineNum - 1 >= 0 && i == 0) //设置上一个的endTime            lyric[lineNum - 1].endTime = lyric[lineNum].startTime;        lyric[lineNum].lineNum = lineNum;        lyric[lineNum].lyricContent = contentTemp;        lineNum++;    }}void getLyricHeader(string str){    for(int i = 0; i < 4; i++)    {        if(header[i] == str.substr(1, 3))        {            Lheader[i] = str;        }    }}//显示数据void printLyric(){    cout << "歌曲信息:" << endl;    for(int i = 0; i < 4; i++)    {        cout << Lheader[i] << endl;    }    for(int i = 0; i < lineNum; i++)    {        if(lyric[i].startTime != "")        {            cout << "行    号:\t" << lyric[i].lineNum << endl;            cout << "开始时间:\t" << lyric[i].startTime << endl;            cout << "结束时间:\t" << lyric[i].endTime << endl;            cout << "歌词内容:\t" << lyric[i].lyricContent << endl;            cout << endl;        }    }}//将时间转换成毫秒int changeStringToInt(string str_time){    int time, min, sec, msc = 0; //分钟,秒,毫秒 转换成毫秒    min = atof(const_cast<const char *>(str_time.substr(0, 2).c_str()));    sec = atof(const_cast<const char *>(str_time.substr(3, 2).c_str()));    if(str_time.length() > 5)        msc = atof(const_cast<const char *>(str_time.substr(4, 2).c_str()));    time = min * 60 * 100 + sec * 100 + msc;    return time;}