homebrew_launcher/src/fs/DirList.cpp

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2016-02-29 22:28:18 +01:00
/****************************************************************************
* Copyright (C) 2010
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* DirList Class
* for WiiXplorer 2010
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <algorithm>
#include <sys/stat.h>
#include <sys/dirent.h>
#include "DirList.h"
#include "utils/StringTools.h"
DirList::DirList()
{
Flags = 0;
Filter = 0;
}
DirList::DirList(const std::string & path, const char *filter, u32 flags)
{
this->LoadPath(path, filter, flags);
this->SortList();
}
DirList::~DirList()
{
ClearList();
}
bool DirList::LoadPath(const std::string & folder, const char *filter, u32 flags)
{
if(folder.empty()) return false;
Flags = flags;
Filter = filter;
std::string folderpath(folder);
u32 length = folderpath.size();
//! clear path of double slashes
RemoveDoubleSlashs(folderpath);
//! remove last slash if exists
if(length > 0 && folderpath[length-1] == '/')
folderpath.erase(length-1);
return InternalLoadPath(folderpath);
}
bool DirList::InternalLoadPath(std::string &folderpath)
{
if(folderpath.size() < 3)
return false;
struct dirent *dirent = NULL;
DIR *dir = NULL;
dir = opendir(folderpath.c_str());
if (dir == NULL)
return false;
while ((dirent = readdir(dir)) != 0)
{
bool isDir = dirent->d_type & DT_DIR;
const char *filename = dirent->d_name;
if(isDir)
{
if(strcmp(filename,".") == 0 || strcmp(filename,"..") == 0)
continue;
if(Flags & CheckSubfolders)
{
int length = folderpath.size();
if(length > 2 && folderpath[length-1] != '/')
folderpath += '/';
folderpath += filename;
InternalLoadPath(folderpath);
folderpath.erase(length);
}
if(!(Flags & Dirs))
continue;
}
else if(!(Flags & Files))
{
continue;
}
if(Filter)
{
char * fileext = strrchr(filename, '.');
if(!fileext)
continue;
if(strtokcmp(fileext, Filter, ",") == 0)
AddEntrie(folderpath, filename, isDir);
}
else
{
AddEntrie(folderpath, filename, isDir);
}
}
closedir(dir);
return true;
}
void DirList::AddEntrie(const std::string &filepath, const char * filename, bool isDir)
{
if(!filename)
return;
int pos = FileInfo.size();
FileInfo.resize(pos+1);
FileInfo[pos].FilePath = (char *) malloc(filepath.size()+strlen(filename)+2);
if(!FileInfo[pos].FilePath)
{
FileInfo.resize(pos);
return;
}
sprintf(FileInfo[pos].FilePath, "%s/%s", filepath.c_str(), filename);
FileInfo[pos].isDir = isDir;
}
void DirList::ClearList()
{
for(u32 i = 0; i < FileInfo.size(); ++i)
{
if(FileInfo[i].FilePath)
free(FileInfo[i].FilePath);
}
FileInfo.clear();
std::vector<DirEntry>().swap(FileInfo);
}
const char * DirList::GetFilename(int ind) const
{
if (!valid(ind))
return "";
return FullpathToFilename(FileInfo[ind].FilePath);
}
static bool SortCallback(const DirEntry & f1, const DirEntry & f2)
{
if(f1.isDir && !(f2.isDir)) return true;
if(!(f1.isDir) && f2.isDir) return false;
if(f1.FilePath && !f2.FilePath) return true;
if(!f1.FilePath) return false;
if(strcasecmp(f1.FilePath, f2.FilePath) > 0)
return false;
return true;
}
void DirList::SortList()
{
if(FileInfo.size() > 1)
std::sort(FileInfo.begin(), FileInfo.end(), SortCallback);
}
void DirList::SortList(bool (*SortFunc)(const DirEntry &a, const DirEntry &b))
{
if(FileInfo.size() > 1)
std::sort(FileInfo.begin(), FileInfo.end(), SortFunc);
}
u64 DirList::GetFilesize(int index) const
{
struct stat st;
const char *path = GetFilepath(index);
if(!path || stat(path, &st) != 0)
return 0;
return st.st_size;
}
int DirList::GetFileIndex(const char *filename) const
{
if(!filename)
return -1;
for (u32 i = 0; i < FileInfo.size(); ++i)
{
if (strcasecmp(GetFilename(i), filename) == 0)
return i;
}
return -1;
}