Mercurial > hg > svcore
view data/fileio/FileFinder.cpp @ 369:007b01b971a6
* function rename & notes
author | Chris Cannam |
---|---|
date | Mon, 04 Feb 2008 13:35:11 +0000 |
parents | a9ccd644f3bf |
children |
line wrap: on
line source
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2007 QMUL. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #include "FileFinder.h" #include "FileSource.h" #include "AudioFileReaderFactory.h" #include "DataFileReaderFactory.h" #include <QFileInfo> #include <QMessageBox> #include <QFileDialog> #include <QInputDialog> #include <QImageReader> #include <QSettings> #include <iostream> FileFinder * FileFinder::m_instance = 0; FileFinder::FileFinder() : m_lastLocatedLocation("") { } FileFinder::~FileFinder() { } FileFinder * FileFinder::getInstance() { if (m_instance == 0) { m_instance = new FileFinder(); } return m_instance; } QString FileFinder::getOpenFileName(FileType type, QString fallbackLocation) { QString settingsKey; QString lastPath = fallbackLocation; QString title = tr("Select file"); QString filter = tr("All files (*.*)"); switch (type) { case SessionFile: settingsKey = "sessionpath"; title = tr("Select a session file"); filter = tr("Sonic Visualiser session files (*.sv)\nAll files (*.*)"); break; case AudioFile: settingsKey = "audiopath"; title = "Select an audio file"; filter = tr("Audio files (%1)\nAll files (*.*)") .arg(AudioFileReaderFactory::getKnownExtensions()); break; case LayerFile: settingsKey = "layerpath"; filter = tr("All supported files (%1)\nSonic Visualiser Layer XML files (*.svl)\nComma-separated data files (*.csv)\nSpace-separated .lab files (*.lab)\nMIDI files (*.mid)\nText files (*.txt)\nAll files (*.*)").arg(DataFileReaderFactory::getKnownExtensions()); break; case LayerFileNoMidi: settingsKey = "layerpath"; filter = tr("All supported files (%1)\nSonic Visualiser Layer XML files (*.svl)\nComma-separated data files (*.csv)\nSpace-separated .lab files (*.lab)\nText files (*.txt)\nAll files (*.*)").arg(DataFileReaderFactory::getKnownExtensions()); break; case SessionOrAudioFile: settingsKey = "lastpath"; filter = tr("All supported files (*.sv %1)\nSonic Visualiser session files (*.sv)\nAudio files (%1)\nAll files (*.*)") .arg(AudioFileReaderFactory::getKnownExtensions()); break; case ImageFile: settingsKey = "imagepath"; { QStringList fmts; QList<QByteArray> formats = QImageReader::supportedImageFormats(); for (QList<QByteArray>::iterator i = formats.begin(); i != formats.end(); ++i) { fmts.push_back(QString("*.%1") .arg(QString::fromLocal8Bit(*i).toLower())); } filter = tr("Image files (%1)\nAll files (*.*)").arg(fmts.join(" ")); } break; case AnyFile: settingsKey = "lastpath"; filter = tr("All supported files (*.sv %1 %2)\nSonic Visualiser session files (*.sv)\nAudio files (%1)\nLayer files (%2)\nAll files (*.*)") .arg(AudioFileReaderFactory::getKnownExtensions()) .arg(DataFileReaderFactory::getKnownExtensions()); break; }; if (lastPath == "") { char *home = getenv("HOME"); if (home) lastPath = home; else lastPath = "."; } else if (QFileInfo(lastPath).isDir()) { lastPath = QFileInfo(lastPath).canonicalPath(); } else { lastPath = QFileInfo(lastPath).absoluteDir().canonicalPath(); } QSettings settings; settings.beginGroup("FileFinder"); lastPath = settings.value(settingsKey, lastPath).toString(); QString path = ""; // Use our own QFileDialog just for symmetry with getSaveFileName below QFileDialog dialog; dialog.setFilters(filter.split('\n')); dialog.setWindowTitle(title); dialog.setDirectory(lastPath); dialog.setAcceptMode(QFileDialog::AcceptOpen); dialog.setFileMode(QFileDialog::ExistingFile); if (dialog.exec()) { QStringList files = dialog.selectedFiles(); if (!files.empty()) path = *files.begin(); QFileInfo fi(path); if (!fi.exists()) { QMessageBox::critical(0, tr("File does not exist"), tr("File \"%1\" does not exist").arg(path)); path = ""; } else if (!fi.isReadable()) { QMessageBox::critical(0, tr("File is not readable"), tr("File \"%1\" can not be read").arg(path)); path = ""; } else if (fi.isDir()) { QMessageBox::critical(0, tr("Directory selected"), tr("File \"%1\" is a directory").arg(path)); path = ""; } else if (!fi.isFile()) { QMessageBox::critical(0, tr("Non-file selected"), tr("Path \"%1\" is not a file").arg(path)); path = ""; } else if (fi.size() == 0) { QMessageBox::critical(0, tr("File is empty"), tr("File \"%1\" is empty").arg(path)); path = ""; } } if (path != "") { settings.setValue(settingsKey, QFileInfo(path).absoluteDir().canonicalPath()); } return path; } QString FileFinder::getSaveFileName(FileType type, QString fallbackLocation) { QString settingsKey; QString lastPath = fallbackLocation; QString title = tr("Select file"); QString filter = tr("All files (*.*)"); switch (type) { case SessionFile: settingsKey = "savesessionpath"; title = tr("Select a session file"); filter = tr("Sonic Visualiser session files (*.sv)\nAll files (*.*)"); break; case AudioFile: settingsKey = "saveaudiopath"; title = "Select an audio file"; title = tr("Select a file to export to"); filter = tr("WAV audio files (*.wav)\nAll files (*.*)"); break; case LayerFile: settingsKey = "savelayerpath"; title = tr("Select a file to export to"); filter = tr("Sonic Visualiser Layer XML files (*.svl)\nComma-separated data files (*.csv)\nMIDI files (*.mid)\nText files (*.txt)\nAll files (*.*)"); break; case LayerFileNoMidi: settingsKey = "savelayerpath"; title = tr("Select a file to export to"); filter = tr("Sonic Visualiser Layer XML files (*.svl)\nComma-separated data files (*.csv)\nText files (*.txt)\nAll files (*.*)"); break; case SessionOrAudioFile: std::cerr << "ERROR: Internal error: FileFinder::getSaveFileName: SessionOrAudioFile cannot be used here" << std::endl; abort(); case ImageFile: settingsKey = "saveimagepath"; title = tr("Select a file to export to"); filter = tr("Portable Network Graphics files (*.png)\nAll files (*.*)"); break; case AnyFile: std::cerr << "ERROR: Internal error: FileFinder::getSaveFileName: AnyFile cannot be used here" << std::endl; abort(); }; if (lastPath == "") { char *home = getenv("HOME"); if (home) lastPath = home; else lastPath = "."; } else if (QFileInfo(lastPath).isDir()) { lastPath = QFileInfo(lastPath).canonicalPath(); } else { lastPath = QFileInfo(lastPath).absoluteDir().canonicalPath(); } QSettings settings; settings.beginGroup("FileFinder"); lastPath = settings.value(settingsKey, lastPath).toString(); QString path = ""; // Use our own QFileDialog instead of static functions, as we may // need to adjust the file extension based on the selected filter QFileDialog dialog; dialog.setFilters(filter.split('\n')); dialog.setWindowTitle(title); dialog.setDirectory(lastPath); dialog.setAcceptMode(QFileDialog::AcceptSave); dialog.setFileMode(QFileDialog::AnyFile); dialog.setConfirmOverwrite(false); // we'll do that if (type == SessionFile) { dialog.setDefaultSuffix("sv"); } else if (type == AudioFile) { dialog.setDefaultSuffix("wav"); } else if (type == ImageFile) { dialog.setDefaultSuffix("png"); } bool good = false; while (!good) { path = ""; if (!dialog.exec()) break; QStringList files = dialog.selectedFiles(); if (files.empty()) break; path = *files.begin(); QFileInfo fi(path); std::cerr << "type = " << type << ", suffix = " << fi.suffix().toStdString() << std::endl; if ((type == LayerFile || type == LayerFileNoMidi) && fi.suffix() == "") { QString expectedExtension; QString selectedFilter = dialog.selectedFilter(); if (selectedFilter.contains(".svl")) { expectedExtension = "svl"; } else if (selectedFilter.contains(".txt")) { expectedExtension = "txt"; } else if (selectedFilter.contains(".csv")) { expectedExtension = "csv"; } else if (selectedFilter.contains(".mid")) { expectedExtension = "mid"; } std::cerr << "expected extension = " << expectedExtension.toStdString() << std::endl; if (expectedExtension != "") { path = QString("%1.%2").arg(path).arg(expectedExtension); fi = QFileInfo(path); } } if (fi.isDir()) { QMessageBox::critical(0, tr("Directory selected"), tr("File \"%1\" is a directory").arg(path)); continue; } if (fi.exists()) { if (QMessageBox::question(0, tr("File exists"), tr("The file \"%1\" already exists.\nDo you want to overwrite it?").arg(path), QMessageBox::Ok, QMessageBox::Cancel) != QMessageBox::Ok) { continue; } } good = true; } if (path != "") { settings.setValue(settingsKey, QFileInfo(path).absoluteDir().canonicalPath()); } return path; } void FileFinder::registerLastOpenedFilePath(FileType type, QString path) { QString settingsKey; switch (type) { case SessionFile: settingsKey = "sessionpath"; break; case AudioFile: settingsKey = "audiopath"; break; case LayerFile: settingsKey = "layerpath"; break; case LayerFileNoMidi: settingsKey = "layerpath"; break; case SessionOrAudioFile: settingsKey = "lastpath"; break; case ImageFile: settingsKey = "imagepath"; break; case AnyFile: settingsKey = "lastpath"; break; } if (path != "") { QSettings settings; settings.beginGroup("FileFinder"); path = QFileInfo(path).absoluteDir().canonicalPath(); settings.setValue(settingsKey, path); settings.setValue("lastpath", path); } } QString FileFinder::find(FileType type, QString location, QString lastKnownLocation) { if (FileSource::canHandleScheme(location)) { if (FileSource(location).isAvailable()) { std::cerr << "FileFinder::find: ok, it's available... returning" << std::endl; return location; } } if (QFileInfo(location).exists()) return location; QString foundAt = ""; if ((foundAt = findRelative(location, lastKnownLocation)) != "") { return foundAt; } if ((foundAt = findRelative(location, m_lastLocatedLocation)) != "") { return foundAt; } return locateInteractive(type, location); } QString FileFinder::findRelative(QString location, QString relativeTo) { if (relativeTo == "") return ""; std::cerr << "Looking for \"" << location.toStdString() << "\" next to \"" << relativeTo.toStdString() << "\"..." << std::endl; QString fileName; QString resolved; if (FileSource::isRemote(location)) { fileName = QUrl(location).path().section('/', -1, -1, QString::SectionSkipEmpty); } else { if (QUrl(location).scheme() == "file") { location = QUrl(location).toLocalFile(); } fileName = QFileInfo(location).fileName(); } if (FileSource::isRemote(relativeTo)) { resolved = QUrl(relativeTo).resolved(fileName).toString(); if (!FileSource(resolved).isAvailable()) resolved = ""; std::cerr << "resolved: " << resolved.toStdString() << std::endl; } else { if (QUrl(relativeTo).scheme() == "file") { relativeTo = QUrl(relativeTo).toLocalFile(); } resolved = QFileInfo(relativeTo).dir().filePath(fileName); if (!QFileInfo(resolved).exists() || !QFileInfo(resolved).isFile() || !QFileInfo(resolved).isReadable()) { resolved = ""; } } return resolved; } QString FileFinder::locateInteractive(FileType type, QString thing) { QString question; if (type == AudioFile) { question = tr("Audio file \"%1\" could not be opened.\nDo you want to locate it?"); } else { question = tr("File \"%1\" could not be opened.\nDo you want to locate it?"); } QString path = ""; bool done = false; while (!done) { int rv = QMessageBox::question (0, tr("Failed to open file"), question.arg(thing), tr("Locate file..."), tr("Use URL..."), tr("Cancel"), 0, 2); switch (rv) { case 0: // Locate file if (QFileInfo(thing).dir().exists()) { path = QFileInfo(thing).dir().canonicalPath(); } path = getOpenFileName(type, path); done = (path != ""); break; case 1: // Use URL { bool ok = false; path = QInputDialog::getText (0, tr("Use URL"), tr("Please enter the URL to use for this file:"), QLineEdit::Normal, "", &ok); if (ok && path != "") { if (FileSource(path).isAvailable()) { done = true; } else { QMessageBox::critical (0, tr("Failed to open location"), tr("URL \"%1\" could not be opened").arg(path)); path = ""; } } break; } case 2: // Cancel path = ""; done = true; break; } } if (path != "") m_lastLocatedLocation = path; return path; }