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现在对LRC类稍加改进，可解析如下项：
TITLE：歌名 AUTHOR：演唱者 ALBUM：专辑名称 CAPTION：歌词 BY：上传者 DELAY：延迟时间 WRONG：未定义 // Lyc.h: interface for the CLyc class. // //Author visualsan; //Email:[email protected]\n ////////////////////////////////////////////////////////////////////// #if !defined(AFX_LYC_H__B0C8E9D3_8752_4910_B7BF_2F566DF05229__INCLUDED_) #define AFX_LYC_H__B0C8E9D3_8752_4910_B7BF_2F566DF05229__INCLUDED_ #if _MSC_VER > 1000 #pragma once #endif // _MSC_VER > 1000 #include <afxtempl.h> #include <map> #include <algorithm> using namespace std; typedef enum {TITLE= 0 ,AUTHOR= 1 ,ALBUM= 2 ,CAPTION= 3 ,WRONG= 4 ,BY= 5 ,DELAY= 6 } LYCType; class CLyc { public : CLyc(); CLyc(CString filename); virtual ~CLyc(); //read from file,if sucess ,retuen true. bool Read(CString str); //sucess to read bool GetSucess(){ return m_bLoadSuccess;} //get title of the lyc file while sucessed reading CString GetTitle() { return m_Title; } //get author CString GetAuthor(){ return m_Author; } CString GetAlbum() { return m_Album; } CString GetBy() { return m_SendBy;} double GetOffset(){ return m_delayTime;} //get length of the song double GetLengthTime(); //get start time double GetStartTime(){ return m_beginTime; } //get end time double GetEndTime() { return m_endTime; } CString GetWordsFromTime( double curTime); //Get next words of the currenttime CString GetNextWords( int step= 1 ); //Get Previous words of current time CString GetPreWords( int step= 1 ); //samething about. CString GetAbout(); private : // CString GetDataFromType(CString data,LYCType tp); bool IsFileExit(CString str); void DoTitle(CString str); void DoAuthor(CString str); void DoAlbum(CString str); void DoCaption(CString str); void DoBy(CString str); void DoDelay(CString str); LYCType GetType(CString str); map< const CString ,CString> m_Data; CArray< double , double > m_strTime; CString m_strFileName; bool m_bLoadSuccess; int m_Index; CString m_CurWords; double m_ForeTime; double m_NextTime; CString m_Author; CString m_Album; CString m_Title; CString m_SendBy; double m_beginTime; double m_endTime; double m_delayTime; }; #endif // !defined(AFX_LYC_H__B0C8E9D3_8752_4910_B7BF_2F566DF05229__INCLUDED_) //////////cpp // Lyc.cpp: implementation of the CLyc class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "Lyc.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif ////////////////////////////////////////////////////////////////////// // Construction/Destruction //Author visualsan; //Email:[email protected]\n ////////////////////////////////////////////////////////////////////// CLyc::CLyc() { m_bLoadSuccess = FALSE; m_Data.clear(); m_strTime.RemoveAll(); m_Author= "" ; m_Album= "" ; m_Title= "" ; m_beginTime = 0 . 0 ; m_endTime = 0 . 0 ; m_Index = 0 ; m_CurWords = "" ; m_ForeTime =- 1 ; m_NextTime = - 1 ; m_delayTime = 0 . 0 ; } CLyc::CLyc(CString filename) { m_bLoadSuccess = FALSE; m_Data.clear(); m_strTime.RemoveAll(); m_Author= "" ; m_Album= "" ; m_Title= "" ; m_beginTime = 0 . 0 ; m_endTime = 0 . 0 ; m_Index = 0 ; m_CurWords = "" ; m_SendBy = "" ; Read(filename); } CLyc::~CLyc() { m_Data.clear(); m_strTime.RemoveAll(); } bool CLyc::Read(CString str) { m_bLoadSuccess = false ; if (IsFileExit(str) == false ) { return false ; } CString data,data1; m_Data.clear(); m_strTime.RemoveAll(); m_Author= "UnKnow" ; m_Album= "UnKnow" ; m_Title= "UnKnow" ; m_beginTime = 0 . 0 ; m_endTime = 0 . 0 ; m_Index = 0 ; m_CurWords = "UnKnow" ; m_ForeTime =- 1 ; m_NextTime = - 1 ; m_delayTime = 0 . 0 ; m_SendBy = "UnKnow" ; CStdioFile f(str,CFile::modeRead); do { f.ReadString(data); data1 = data; data1.Replace( " " , "" ); if ( !data1.IsEmpty() ) { while (str.GetAt( 0 ) == ' ' ) str = str.Right(str.GetLength()- 1 ); //cout << (LPCTSTR)data << endl; LYCType tp=GetType(data); switch ( tp ) { case TITLE: DoTitle(data); break ; case AUTHOR: DoAuthor(data); break ; case ALBUM: DoAlbum(data); break ; case CAPTION: DoCaption(data); break ; case BY: DoBy(data); case DELAY: DoDelay(data); case WRONG: break ; } } } while (!data.IsEmpty()); f.Close(); m_bLoadSuccess = true ; int l=m_strTime.GetSize(); double *dt= new double [m_strTime.GetSize()]; for ( int i= 0 ;i<l;i++) { dt[i] = m_strTime.GetAt(i); } m_strTime.RemoveAll(); sort(dt,dt+l); for (i= 0 ;i<l;i++) { m_strTime.Add(dt[i]); } delete dt; m_beginTime = m_strTime.GetAt( 0 ); m_endTime = m_strTime.GetAt(m_strTime.GetSize()- 1 ); return true ; } double CLyc::GetLengthTime() { if ( !m_bLoadSuccess ) { return 0 . 0 ; } return m_endTime-m_beginTime; } LYCType CLyc::GetType(CString str) { //wrong case if (str.IsEmpty()) { return WRONG; } if (str.GetAt( 0 ) != '[' ) { return WRONG; } if (str.Find( ']' ) == - 1 ) { return WRONG; } ///////////////// //title case if ((str.GetAt( 1 ) == 't' || str.GetAt( 1 ) == 'T' )&& (str.GetAt( 2 ) == 'i' || str.GetAt( 1 ) == 'I' )) { return TITLE; } ///////////// //Author //Author case if ((str.GetAt( 1 ) == 'a' || str.GetAt( 1 ) == 'A' )&& (str.GetAt( 2 ) == 'r' || str.GetAt( 1 ) == 'R' )) { return AUTHOR; } ///////////// //ALBUM //ALBUM case if ((str.GetAt( 1 ) == 'a' || str.GetAt( 1 ) == 'A' )&& (str.GetAt( 2 ) == 'l' || str.GetAt( 1 ) == 'L' )) { return ALBUM; } if ((str.GetAt( 1 ) == 'b' || str.GetAt( 1 ) == 'B' )&& (str.GetAt( 2 ) == 'y' || str.GetAt( 1 ) == 'Y' )) { return BY; } ///////////////////////////// CString str1(str); str1.MakeLower(); if ( str1.Find( "offset" ) != - 1 ) if ((str.GetAt( 1 ) == 'o' || str.GetAt( 1 ) == 'O' )&& (str.GetAt( 2 ) == 'f' || str.GetAt( 2 ) == 'F' )&& (str.GetAt( 3 ) == 'f' || str.GetAt( 3 ) == 'F' )&& (str.GetAt( 4 ) == 's' || str.GetAt( 4 ) == 'S' )&& (str.GetAt( 5 ) == 'e' || str.GetAt( 5 ) == 'E' )&& (str.GetAt( 6 ) == 't' || str.GetAt( 6 ) == 'T' ) ) return DELAY; ///////////// if (str.Find( ':' ) == - 1 ) { return WRONG; } return CAPTION; } bool CLyc::IsFileExit(CString str) { FILE *f; f = fopen(str, "r" ); if ( f == NULL ) { return false ; } fclose( f ); return true ; } void CLyc::DoDelay(CString str) { char c[ 500 ]={ '\0' }; for ( int i= 8 ;i<str.GetLength()- 1 ;i++) { c[i- 8 ] = str.GetAt(i); } m_delayTime = atof( c ); m_delayTime /= 1000 . 0 ; } void CLyc::DoTitle(CString str) { char c[ 500 ]={ '\0' }; for ( int i= 4 ;i<str.GetLength()- 1 ;i++) { c[i- 4 ] = str.GetAt(i); } m_Title = c; } void CLyc::DoAuthor(CString str) { char c[ 500 ]={ '\0' }; for ( int i= 4 ;i<str.GetLength()- 1 ;i++) { c[i- 4 ] = str.GetAt(i); } m_Author = c; } void CLyc::DoAlbum(CString str) { char c[ 500 ]={ '\0' }; for ( int i= 4 ;i<str.GetLength()- 1 ;i++) { c[i- 4 ] = str.GetAt(i); } m_Album = c; } void CLyc::DoBy(CString str) { char c[ 500 ]={ '\0' }; for ( int i= 4 ;i<str.GetLength()- 1 ;i++) { c[i- 4 ] = str.GetAt(i); } m_SendBy = c; } void CLyc::DoCaption(CString str) { CString st; CString outstr; st=str.Left(str.Find( ']' )); st=st.Right(st.GetLength()- 1 ); str=str.Right(str.GetLength()- 1 ); str=str.Right(str.GetLength()-str.Find( ']' )- 1 ); outstr = str.Right(str.GetLength()-str.ReverseFind( ']' )- 1 ); st.Format( "%.2f" ,atof(st.Left(st.Find( ':' )+ 1 ))* 60 . 0 +atof(st.Right(st.GetLength()-st.ReverseFind( ':' )- 1 ))); // cout << (LPCTSTR)st << endl; // cout << (LPCTSTR)outstr << endl; m_strTime.Add(atof(st)); m_Data[st] = outstr; if (str.Find( '[' ) != - 1 ) { DoCaption(str); } } CString CLyc::GetWordsFromTime( double curTime) { if ( !m_bLoadSuccess ) { return " " ; } if (curTime>m_ForeTime && curTime<m_NextTime) { return m_CurWords; } CString str; curTime += m_delayTime; if (curTime < m_beginTime ) { curTime = m_beginTime; str.Format( "%.2f" ,m_strTime.GetAt( 0 )); return m_Data[str]; } if (curTime > m_endTime ) { curTime = m_endTime; str.Format( "%.2f" , m_strTime.GetAt(m_strTime.GetSize()- 1 ) ); return m_Data[str]; } for ( int i= 0 ; i<m_strTime.GetSize(); i++ ) { if (curTime < m_strTime.GetAt(i) ) { break ; } } str.Format( "%.2f" , m_strTime.GetAt(i- 1 ) ); m_Index = i- 1 ; m_CurWords = m_Data[str]; if (i- 2 >= 0 ) { m_ForeTime=m_strTime.GetAt(i- 2 ); } if (i- 1 <m_strTime.GetSize()) { m_NextTime=m_strTime.GetAt(i- 1 ); } return m_Data[str]; } CString CLyc::GetNextWords( int step) { if ( !m_bLoadSuccess ) { return " " ; } CString str; if (m_Index+step< 0 ) { str.Format( "%.2f" ,m_strTime.GetAt( 0 )); return " " ; } else if (m_Index+step>=m_strTime.GetSize()) { str.Format( "%.2f" ,m_strTime.GetAt(m_strTime.GetSize()- 1 )); return " " ; } else str.Format( "%.2f" ,m_strTime.GetAt(m_Index+step)); return m_Data[str]; } CString CLyc::GetPreWords( int step) { if ( !m_bLoadSuccess ) { return " " ; } CString str; if (m_Index-step< 0 ) { str.Format( "%.2f" ,m_strTime.GetAt( 0 )); return " " ; } else if (m_Index-step>=m_strTime.GetSize()) { str.Format( "%.2f" ,m_strTime.GetAt(m_strTime.GetSize()- 1 )); return " " ; } else str.Format( "%.2f" ,m_strTime.GetAt(m_Index-step)); return m_Data[str]; } CString CLyc::GetAbout() { CString str= "Author Email:[email protected]\n" ; return str; } |
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关于LRC歌词文件的格式介绍，参见百度或者谷歌搜索结果。
以下是5个实例。 代码达到极简: #include <iostream> #include "lrc_parser.hpp" #include "toolbox.hpp" //UTF2GBK function using namespace music; int main( int , char **) { lrc_parser lrc( "lrc_file(.lrc)" ); //创建对象 lrc.parser(); //解析 //输出 std::cout<<UTF2GBK(lrc.get_title().c_str()) //歌名 << " " <<UTF2GBK(lrc.get_author().c_str()) //歌者 << " " <<UTF2GBK(lrc.get_album().c_str()) //专辑 <<std::endl<<std::endl; std::cout<< "=============================" <<std::endl; for (size_t i= 0 ;i<lrc.size();++i) { for (size_t j= 0 ;j<lrc[i].size();++j) { std::cout<<lrc[i][j]<< " " ; } std::cout<<UTF2GBK(lrc.get_lrc_body(i).c_str())<<std::endl; } return 0 ; } |