89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
#pragma once
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#include<hgl/type/StrChar.h>
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namespace hgl
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{
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namespace util
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{
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/**
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* CSV字段拆分工具<br>
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* 支持逗号分隔与tab分隔以及使用引号包裹的字符串
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*/
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template<typename T> class CSVFieldSplite
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{
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const T *str;
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int str_length;
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const T *sp;
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const T *end;
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public:
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CSVFieldSplite()
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{
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str=nullptr;
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str_length=0;
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sp=nullptr;
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end=nullptr;
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}
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CSVFieldSplite(const T *s,const int length){Start(s,length);}
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~CSVFieldSplite()=default;
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void Start(const T *s,const int length)
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{
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str=s;
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str_length=length;
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sp=str;
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end=str+str_length;
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}
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const T *next_field(int *len)
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{
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if(!len)return(nullptr);
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if(sp>=end)return(nullptr);
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if(*sp==','||*sp=='\t')
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{
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*len=0;
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++sp;
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return sp;
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}
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const T *result;
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if(*sp=='"')
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{
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++sp;
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const T *ep=hgl::strchr(sp,T('"'));
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if(!ep)
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return nullptr;
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result=sp;
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*len=ep-sp;
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sp=ep+2;
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return result;
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}
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else
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{
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result=sp;
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const T *ep=sp+1;
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while(*ep!=','&&*ep!='\t'&&ep<end)
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++ep;
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*len=ep-sp;
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sp=ep+1;
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return result;
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}
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}
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};//class CSVFieldSplite
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}//namespace util
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}//namespace hgl
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