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/**
* ======================== legal notice ======================
*
* File: FileSystem.cc
* Created: 21. Juli 2012, 12
* Author: <a href="mailto:geronimo013@gmx.de">Geronimo</a>
* Project: libfsScan: mediatypes and filesystem scanning
*
* CMP - compound media player
*
* is a client/server mediaplayer intended to play any media from any workstation
* without the need to export or mount shares. cmps is an easy to use backend
* with a (ready to use) HTML-interface. Additionally the backend supports
* authentication via HTTP-digest authorization.
* cmpc is a client with vdr-like osd-menues.
*
* Copyright (c) 2012 Reinhard Mantey, some rights reserved!
* published under Creative Commons by-sa
* For details see http://creativecommons.org/licenses/by-sa/3.0/
*
* The cmp project's homepage is at http://projects.vdr-developer.org/projects/cmp
*
* --------------------------------------------------------------
*/
#include <FileSystem.h>
#include <FileRepresentation.h>
#include <File.h>
#include <StringBuilder.h>
#include <iostream>
#include <stdlib.h>
#include <string.h>
char cFileSystem::PathSeparator = '/';
char cFileSystem::RootPath[4] = { PathSeparator, 0, 0, 0 };
cFileSystem::cFileSystem()
{
}
cFileSystem::~cFileSystem()
{
std::tr1::unordered_map<std::string, cFileRepresentation *>::iterator it = fileCache.begin();
while (it != fileCache.end()) {
if (it->second) delete it->second;
++it;
}
}
cFileRepresentation *cFileSystem::cacheEntry(const char* Path)
{
if (fileCache.empty()) return NULL;
std::tr1::unordered_map<std::string, cFileRepresentation *>::iterator it = fileCache.find(Path);
if (it != fileCache.end()) return it->second;
return NULL;
}
cFileRepresentation *cFileSystem::representationOfFile(const cFile &Parent, const char* Path)
{
cFileRepresentation *parentRep = (cFileRepresentation *) Parent.rep;
cFileRepresentation *tmp = NULL;
cStringBuilder *sb = new cStringBuilder(Parent.AbsolutePath());
char *scratch = strdup(Path);
char *last = scratch + strlen(Path);
char *start = *scratch == PathSeparator ? scratch + 1 : scratch;
char *end = strchr(scratch, PathSeparator);
char *path;
while (start < last) {
end = strchr(start, PathSeparator);
if (!end) end = start + strlen(start);
*end = 0;
sb->Append(PathSeparator).Append(start);
path = sb->toString();
tmp = cacheEntry(path);
if (!tmp) {
tmp = new cFileRepresentation(parentRep, start);
fileCache[path] = tmp;
}
parentRep = tmp;
free(path);
start = end + 1;
}
free(scratch);
delete sb;
if (tmp) return tmp;
return NULL;
}
cFileRepresentation *cFileSystem::representationOfFile(const char* Path)
{
cFileRepresentation *rv = cacheEntry(Path);
if (!rv) {
cFileRepresentation *tmp = NULL;
char *scratch = strdup(Path);
char *p;
for (p = strrchr(scratch, PathSeparator); !rv && p; p = strrchr(scratch, PathSeparator)) {
if (p > scratch) *p = 0;
else {
if (!(rv = cacheEntry(RootPath))) {
*p = 0;
tmp = new cFileRepresentation(RootPath);
fileCache[RootPath] = tmp;
break;
}
}
if ((tmp = cacheEntry(scratch))) break;
}
if (tmp) {
cFileRepresentation *parent = tmp;
size_t poolSize = fileCache.size();
const char *last = scratch + strlen(Path);
for (p = scratch + strlen(scratch) + 1; p < last; p += strlen(p) + 1) {
if (!*(p - 1)) *(p - 1) = PathSeparator;
tmp = new cFileRepresentation(parent, p);
fileCache[scratch] = tmp;
poolSize = fileCache.size();
parent = tmp;
}
rv = parent;
}
free(scratch);
}
return rv;
}
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