375 lines
11 KiB
C++
375 lines
11 KiB
C++
#ifndef HGL_FILESYSTEM_FILENAME_INCLUDE
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#define HGL_FILESYSTEM_FILENAME_INCLUDE
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#include<hgl/type/StringList.h>
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#include<hgl/math/PrimaryMathematics.h>
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/**
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* Maximum Path Length Limitation
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* https://docs.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=cmd
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*
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*
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* File name rules
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*
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* Windows
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*
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* + drive_letter
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* | + directory separator
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* | | + filename separator
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* v v v
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* C:\directory\filename.ext
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* ----v---- ---v--- -v-
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* path name ext
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*/
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namespace hgl
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{
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namespace filesystem
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{
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/**
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* 组合文件名.<Br>
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* 根据离散的每一级目录名称和最终名称合成完整文件名
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*/
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template<typename T>
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inline const String<T> ComboFilename(T **str_list,int *str_len,const int count,const T spear_char=(T)HGL_DIRECTORY_SEPARATOR_RAWCHAR)
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{
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T *fullname=nullptr;
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{
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const int total=sum(str_len,count)+count;
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fullname=new T[total];
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}
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T *p=fullname;
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const T *tmp;
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int len;
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bool first=true;
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for(int i=0;i<count;i++)
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{
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len=str_len[i];
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if(len<=0)continue;
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tmp=trim<T>(str_list[i],len,isslash<T>);
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if(!first)
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{
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*p=spear_char;
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++p;
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}
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else
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{
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first=false;
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}
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hgl_cpy<T>(p,tmp,len);
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p+=len;
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}
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*p=0;
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return String<T>::newOf(fullname,p-fullname);
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}
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/**
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* 组合文件名.<Br>
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* 根据离散的每一级目录名称和最终名称合成完整文件名
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*/
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template<typename T>
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inline const String<T> ComboFilename(T **str_list,const int count,const T spear_char=(T)HGL_DIRECTORY_SEPARATOR_RAWCHAR)
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{
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int str_len[count];
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for(int i=0;i<count;i++)
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str_len=strlen(str_list[i]);
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return ComboFilename(str_list,str_len,count,spear_char);
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}
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/**
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* 组合文件名.<Br>
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* 根据离散的每一级目录名称和最终名称合成完整文件名
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*/
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template<typename T>
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inline const String<T> ComboFilename(const StringList<T> &sl,const T spear_char=(T)HGL_DIRECTORY_SEPARATOR_RAWCHAR)
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{
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const int count=sl.GetCount();
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if(count<=0)
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return String<T>();
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AutoDeleteArray<T *> str_list(count);
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AutoDeleteArray<int> str_len(count);
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int index=0;
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for(String<T> *str:sl)
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{
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if(str->IsEmpty())
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continue;
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str_list[index]=str->c_str();
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str_len[index]=str->Length();
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++index;
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}
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return ComboFilename(str_list.data(),str_len,count,spear_char);
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}
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/**
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* 合成文件名<br>
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* 根据路径名和文件名
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*/
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template<typename T>
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inline String<T> MergeFilename(const String<T> &pathname,const String<T> &filename,const T directory_separator_char,const T *directory_separator_str)
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{
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String<T> fullname;
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if(pathname.GetLastChar()==directory_separator_char) //结尾有分隔符
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{
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if(filename.GetFirstChar()==directory_separator_char) //开头有分隔符
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{
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fullname.fromString(pathname.c_str(),pathname.Length()-1); //少取一个字符
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}
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else
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{
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fullname=pathname;
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}
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}
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else //结尾没有分隔符
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{
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fullname=pathname;
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if(filename.GetFirstChar()!=directory_separator_char) //开头没有分隔符
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{
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fullname.Strcat(directory_separator_str); //添加分隔符
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}
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}
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fullname.Strcat(filename);
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return fullname;
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}
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/**
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* 截取完整路径中的文件名
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* @param fullname 完整路径文件名
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*/
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template<typename T>
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inline String<T> ClipFilename(const String<T> &fullname)
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{
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if(fullname.Length()<=1)
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return(String<T>());
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const T spear_char[] = { '/','\\',0 };
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const int pos=fullname.FindRightChars(spear_char);
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if(pos==-1)
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return String<T>(fullname);
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return fullname.SubString(pos+1);
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}
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/**
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* 截取一个文件名中的主名称
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* @param filename 文件名
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* @param split_char 扩展名分隔符,一般为'.'
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*/
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template<typename T>
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inline String<T> ClipFileMainname(const String<T> &filename,const T split_char='.')
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{
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if(filename.Length()<=1)
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return(String<T>());
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const T spear_char[] = { '/','\\',0 };
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const int dot=filename.FindRightChar(split_char);
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const int pos=filename.FindRightChars(spear_char);
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if(dot==-1)
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{
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if(pos==-1)
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return String<T>(filename);
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else
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return filename.SubString(pos+1);
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}
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else
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{
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if(pos==-1)
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return filename.SubString(0,dot);
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else
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return filename.SubString(pos+1,dot-pos-1);
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}
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}
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/**
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* 截取完整文件名中的扩展名
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* @param fullname 完整文件名
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* @param include_dot 是否包括点
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*/
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template<typename T>
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inline String<T> ClipFileExtName(const String<T> &fullname,bool include_dot=true)
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{
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int end=fullname.FindChar(T('?')); //url的文件名，以?为结束
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if(end==-1)
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end=fullname.Length();
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int pos=fullname.FindRightChar(fullname.Length()-end,T('.'));
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if(pos==-1)
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return String<T>();
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return include_dot? fullname.SubString(pos, end- pos ):
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fullname.SubString(pos+1, end-(pos+1));
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}
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/**
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* 清除完整文件名中的扩展名
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* @param fullname 完整文件名
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* @param clear_dot 是否包括点也清除
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*/
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template<typename T>
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inline String<T> TrimFileExtName(const String<T> &fullname,bool clear_dot=false)
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{
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int end=fullname.FindChar(T('?')); //url的文件名，以?为结束
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if(end==-1)
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end=fullname.Length();
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int pos=fullname.FindRightChar(fullname.Length()-end,T('.'));
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if(pos==-1)
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return String<T>();
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return clear_dot? fullname.SubString(0,pos):
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fullname.SubString(0,pos+1);
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}
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/**
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* 截取一个文件名中的路径名
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* @param filename 文件名
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* @param include_spear_char 是否包含最后的分隔符
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*/
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template<typename T>
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inline String<T> ClipPathname(const String<T> &filename,bool include_spear_char=true)
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{
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if(filename.Length()<=1)
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return(String<T>());
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const T spear_char[] = { '/','\\',':',0};
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const int pos=filename.FindRightChars(spear_char);
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if(pos==-1)
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return filename;
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else
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if(include_spear_char)
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return filename.SubString(0,pos+1);
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else
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return filename.SubString(0,pos);
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}
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/**
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* 截取路径最后一个名字
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*/
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template<typename T>
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inline String<T> ClipLastPathname(const String<T> &fullname)
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{
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if(fullname.Length()<=1)
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return(String<T>());
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const T gap_char[]={'\\','/',0};
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T *p=nullptr;
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T *s=fullname.c_str();
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T *e=fullname.c_str()+fullname.Length()-1;
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while(e>s)
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{
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if(!p)
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{
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if(*e==gap_char[0]||*e==gap_char[1])
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{
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--e;
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continue;
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}
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p=e;
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--e;
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}
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else
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{
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if(*e==gap_char[0]||*e==gap_char[1])
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{
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return String<T>(e+1,p-e);
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}
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--e;
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}
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}
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return(String<T>());
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}
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/**
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* 截取完整路径中的路径名和文件名
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* @param pathname 拆分后的路径名
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* @param filename 拆分后的文件名
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* @param fullname 拆分前的完整路径文件名
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*/
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template<typename T>
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inline bool SplitFilename(String<T> &pathname,String<T> &filename,const String<T> &fullname)
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{
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if(fullname.Length()<=1)
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return false;
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const T spear_char[] = { '/','\\' };
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const int pos=fullname.FindRightChars(spear_char);
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if(pos==-1)
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return(false);
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pathname.Strcpy(fullname,pos);
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filename.Strcpy(fullname.c_str()+pos+1);
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return(true);
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}
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template<typename T>
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inline String<T> ReplaceExtName(const String<T> &old_name,const String<T> &new_extname,const T split_char='.')
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{
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if(old_name.Length()<=1)
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return(String<T>::charOf(split_char)+new_extname);
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const int pos=old_name.FindRightChar(split_char);
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if(pos!=-1)
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return old_name.SubString(0,pos)+new_extname;
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else
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return old_name+String<T>::charOf(split_char)+new_extname;
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}
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#ifdef HGL_SUPPORT_CHAR8_T
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inline AnsiString MergeFilename(const AnsiString &pathname,const AnsiString &filename) ///<组合路径名与文件名
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{return MergeFilename<char>(pathname,filename,HGL_DIRECTORY_SEPARATOR,HGL_DIRECTORY_SEPARATOR_RAWSTR);}
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#endif//HGL_SUPPORT_CHAR8_T
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inline U8String MergeFilename(const U8String &pathname,const U8String &filename) ///<组合路径名与文件名
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{return MergeFilename<u8char>(pathname,filename,HGL_DIRECTORY_SEPARATOR,HGL_DIRECTORY_SEPARATOR_U8STR);}
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#if HGL_OS == HGL_OS_Windows
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inline WString MergeFilename(const WString &pathname,const WString &filename) ///<组合路径名与文件名
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{return MergeFilename<wchar_t>(pathname,filename,L'\\',L"\\");}
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#endif//HGL_OS == HGL_OS_Windows
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OSString FixFilename(const OSString &filename); ///<修正部分文件名问题
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}//namespace filesystem
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}//namespace hgl
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#endif//HGL_FILESYSTEM_FILENAME_INCLUDE
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