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https://github.com/projectM-visualizer/projectm.git
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49fc86f13e
- lots of work to preset chooser involving randomization and iteration git-svn-id: https://projectm.svn.sourceforge.net/svnroot/projectm/personal/carm/dev-1.0@230 6778bc44-b910-0410-a7a0-be141de4315d
104 lines
2.2 KiB
C++
104 lines
2.2 KiB
C++
//
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// C++ Implementation: PresetLoader
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//
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// Description:
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//
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//
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// Author: Carmelo Piccione <carmelo.piccione@gmail.com>, (C) 2007
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//
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// Copyright: See COPYING file that comes with this distribution
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//
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//
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#include "PresetLoader.hpp"
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#include <iostream>
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#include <sstream>
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extern "C" {
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#include <errno.h>
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#include <dirent.h>
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}
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#include <cassert>
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PresetLoader::PresetLoader(std::string dirname) :m_dirname(dirname)
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{
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// Do one scan
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rescan();
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}
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void PresetLoader::setScanDirectory(std::string dirname) {
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m_dirname = dirname;
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}
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void PresetLoader::rescan() {
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// Clear the directory entry collection
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m_entries.clear();
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// If directory already opened, close it first
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if (m_dir) {
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closedir(m_dir);
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}
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// Allocate a new a stream given the current directory name
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if ((m_dir = opendir(m_dirname.c_str())) == NULL) {
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handleDirectoryError();
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}
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std::ostringstream out;
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struct dirent * dir_entry;
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while ((dir_entry = readdir(m_dir)) != NULL) {
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// Convert char * to friendly string
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std::string filename(dir_entry->d_name);
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// Verify extension is projectm or milkdrop
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if (filename.rfind(PROJECTM_FILE_EXTENSION) <= 0
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|| filename.rfind(MILKDROP_FILE_EXTENSION) <= 0)
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continue;
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// Create full path name
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out << m_dirname << PATH_SEPARATOR << filename;
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// Add to our directory entry collection
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m_entries.push_back(out.str());
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// We can now toss out the directory entry struct
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free(dir_entry);
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}
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}
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std::auto_ptr<Preset> PresetLoader::loadPreset(unsigned int index, const PresetInputs & presetInputs, PresetOutputs & presetOutputs) {
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// Check that index isn't insane
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assert(index >= 0);
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assert(index < m_entries.size());
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// Return a new auto pointer to a present
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return std::auto_ptr<Preset>(new Preset(m_entries[index], presetInputs, presetOutputs));
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}
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void PresetLoader::handleDirectoryError() {
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switch (errno) {
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case ENOENT:
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break;
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case ENOMEM:
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abort();
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case ENOTDIR:
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break;
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case ENFILE:
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std::cerr << "[PresetLoader] Your system has reached its open file limit. Giving up..." << std::endl;
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abort();
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case EMFILE:
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std::cerr << "[PresetLoader] too many files in use by projectM! Bailing!" << std::endl;
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abort();
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case EACCES:
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break;
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default:
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break;
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}
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}
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