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/**
* ======================== legal notice ======================
*
* File: FilesystemScanner.cc
* Created: 2. Juli 2012, 13:58
* 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 <FilesystemScanner.h>
#include <AbstractMedia.h>
#include <Logging.h>
#include <stddef.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <sys/dir.h>
#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>
#include <util.h>
void freeMediaCallback(void *elem)
{
delete (cAbstractMedia *)elem;
}
cFilesystemScanner::cFilesystemScanner()
: baseDirectory(NULL)
, fileBufSize(512)
, dirEntryBuf(NULL)
, pool(freeMediaCallback)
, mediaFactory(NULL)
{
}
cFilesystemScanner::~cFilesystemScanner()
{
FREE(dirEntryBuf);
FREE(baseDirectory);
pool.clear();
if (mediaFactory) delete mediaFactory;
}
void cFilesystemScanner::SetBaseDirectory(const char* dir)
{
FREE(baseDirectory);
baseDirectory = strdup(dir);
if (mediaFactory) mediaFactory->SetBaseDirectory(dir);
}
void cFilesystemScanner::SetMediaFactory(cMediaFactory* factory)
{
if ((mediaFactory = factory)) {
FREE(baseDirectory);
baseDirectory = strdup(mediaFactory->BaseDirectory());
}
}
// return true if a should be ordered before b
bool defaultMediaSortOrder(void *a, void *b)
{
if (!a && !b) return true;
if (!a && b) return false;
if (a && !b) return true;
cAbstractMedia *m0 = (cAbstractMedia *)a;
cAbstractMedia *m1 = (cAbstractMedia *)b;
bool rv = (m0->MediaType() - m1->MediaType()) < 0;
if (!rv) rv = strcmp(m0->Name(), m1->Name());
return rv;
}
void cFilesystemScanner::Refresh()
{
if (!mediaFactory) return;
pool.clear();
categories.clear();
dirEntryBuf = (struct dirent *)malloc(sizeof(struct dirent));
if (!dirEntryBuf) {
esyslog("ERROR: out of memory!");
return;
}
parseDir(baseDirectory, pool);
FREE(dirEntryBuf);
#ifdef REDNOSE
pool.sort(defaultMediaSortOrder);
#else
pool.sort(NULL);
#endif
cAbstractMedia::SupportedMediaType ot = cAbstractMedia::Invalid;
cAbstractMedia *m;
for (size_t i=0; i < pool.size(); ++i) {
m = (cAbstractMedia *) pool[i];
if (m->MediaType() != ot) {
ot = m->MediaType();
categories[ot] = i;
}
}
}
void cFilesystemScanner::parseDir(const char* dirName, cManagedVector &result)
{
if (!mediaFactory) return;
DIR *dir = opendir(dirName);
cAbstractMedia *media;
char *pathBuf = (char *)malloc(fileBufSize);
struct dirent *dirEntry;
struct stat statBuf;
if (!dir) return;
if (!pathBuf) {
closedir(dir);
return;
}
if (fileBufSize < strlen(dirName) + 128) {
fileBufSize += 256;
pathBuf = (char *)realloc(pathBuf, fileBufSize);
}
while (!readdir_r(dir, dirEntryBuf, &dirEntry) && dirEntry) {
if (*dirEntry->d_name == '.') continue; // don't bother with hidden stuff
strcpy(pathBuf, dirName);
strcat(pathBuf, "/");
strcat(pathBuf, dirEntry->d_name);
if (stat(pathBuf, &statBuf) < 0) return;
if ((media = mediaFactory->CreateMedia(pathBuf, &statBuf))) {
result.push_back(media);
isyslog("found media %s - %s", media->MimeType(), media->LogicalPath());
continue;
}
if ((statBuf.st_mode & S_IFMT) == S_IFDIR) parseDir(pathBuf, result);
}
closedir(dir);
FREE(pathBuf);
}
cAbstractMedia *cFilesystemScanner::FindMedia(const char* LogicalPath)
{
cAbstractMedia *rv = NULL, *tmp;
for (size_t i=0; i < pool.size(); ++i) {
tmp = (cAbstractMedia *) pool[i];
if (!strcmp(tmp->LogicalPath(), LogicalPath)) {
rv = tmp;
break;
}
}
return rv;
}
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