src/Model_FileList.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2012 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #include "Model_FileList.h"
  23
  24 #include "Global.h"
  25
  26 #include <QFileInfo>
  27 #include <QDir>
  28 #include <QFile>
  29 #include <QTextCodec>
  30 #include <QTextStream>
  31 #include <QInputDialog>
  32
  33 #define EXPAND(STR) QString(STR).leftJustified(96, ' ')
  34 #define CHECK_HDR(STR,NAM) (!(STR).compare((NAM), Qt::CaseInsensitive))
  35
  36 ////////////////////////////////////////////////////////////
  37 // Constructor & Destructor
  38 ////////////////////////////////////////////////////////////
  39
  40 FileListModel::FileListModel(void)
  41 :
  42         m_fileIcon(":/icons/page_white_cd.png")
  43 {
  44 }
  45
  46 FileListModel::~FileListModel(void)
  47 {
  48 }
  49
  50 ////////////////////////////////////////////////////////////
  51 // Public Functions
  52 ////////////////////////////////////////////////////////////
  53
  54 int FileListModel::columnCount(const QModelIndex &parent) const
  55 {
  56         return 2;
  57 }
  58
  59 int FileListModel::rowCount(const QModelIndex &parent) const
  60 {
  61         return m_fileList.count();
  62 }
  63
  64 QVariant FileListModel::data(const QModelIndex &index, int role) const
  65 {
  66         if((role == Qt::DisplayRole || role == Qt::ToolTipRole) && index.row() < m_fileList.count() && index.row() >= 0)
  67         {
  68                 switch(index.column())
  69                 {
  70                 case 0:
  71                         return m_fileList.at(index.row()).fileName();
  72                         break;
  73                 case 1:
  74                         return QDir::toNativeSeparators(m_fileList.at(index.row()).filePath());
  75                         break;
  76                 default:
  77                         return QVariant();
  78                         break;
  79                 }
  80         }
  81         else if(role == Qt::DecorationRole && index.column() == 0)
  82         {
  83                 return m_fileIcon;
  84         }
  85         else
  86         {
  87                 return QVariant();
  88         }
  89 }
  90
  91 QVariant FileListModel::headerData(int section, Qt::Orientation orientation, int role) const
  92 {
  93         if(role == Qt::DisplayRole)
  94         {
  95                 if(orientation == Qt::Horizontal)
  96                 {
  97                         switch(section)
  98                         {
  99                         case 0:
 100                                 return QVariant(tr("Title"));
 101                                 break;
 102                         case 1:
 103                                 return QVariant(tr("Full Path"));
 104                                 break;
 105                         default:
 106                                 return QVariant();
 107                                 break;
 108                         }
 109                 }
 110                 else
 111                 {
 112                         if(m_fileList.count() < 10)
 113                         {
 114                                 return QVariant(QString().sprintf("%d", section + 1));
 115                         }
 116                         else if(m_fileList.count() < 100)
 117                         {
 118                                 return QVariant(QString().sprintf("%02d", section + 1));
 119                         }
 120                         else if(m_fileList.count() < 1000)
 121                         {
 122                                 return QVariant(QString().sprintf("%03d", section + 1));
 123                         }
 124                         else
 125                         {
 126                                 return QVariant(QString().sprintf("%04d", section + 1));
 127                         }
 128                 }
 129         }
 130         else
 131         {
 132                 return QVariant();
 133         }
 134 }
 135
 136 void FileListModel::addFile(const QString &filePath)
 137 {
 138         QFileInfo fileInfo(filePath);
 139
 140         for(int i = 0; i < m_fileList.count(); i++)
 141         {
 142                 if(m_fileList.at(i).filePath().compare(fileInfo.canonicalFilePath(), Qt::CaseInsensitive) == 0)
 143                 {
 144                         return;
 145                 }
 146         }
 147
 148         beginResetModel();
 149         m_fileList.append(AudioFileModel(fileInfo.canonicalFilePath(), fileInfo.baseName()));
 150         endResetModel();
 151 }
 152
 153 void FileListModel::addFile(const AudioFileModel &file)
 154 {
 155         for(int i = 0; i < m_fileList.count(); i++)
 156         {
 157                 if(m_fileList.at(i).filePath().compare(file.filePath(), Qt::CaseInsensitive) == 0)
 158                 {
 159                         return;
 160                 }
 161         }
 162
 163         beginResetModel();
 164         m_fileList.append(file);
 165         endResetModel();
 166 }
 167
 168 bool FileListModel::removeFile(const QModelIndex &index)
 169 {
 170         if(index.row() >= 0 && index.row() < m_fileList.count())
 171         {
 172                 beginResetModel();
 173                 m_fileList.removeAt(index.row());
 174                 endResetModel();
 175                 return true;
 176         }
 177         else
 178         {
 179                 return false;
 180         }
 181 }
 182
 183 void FileListModel::clearFiles(void)
 184 {
 185         beginResetModel();
 186         m_fileList.clear();
 187         endResetModel();
 188 }
 189
 190 bool FileListModel::moveFile(const QModelIndex &index, int delta)
 191 {
 192         if(delta != 0 && index.row() >= 0 && index.row() < m_fileList.count() && index.row() + delta >= 0 && index.row() + delta < m_fileList.count())
 193         {
 194                 beginResetModel();
 195                 m_fileList.move(index.row(), index.row() + delta);
 196                 endResetModel();
 197                 return true;
 198         }
 199         else
 200         {
 201                 return false;
 202         }
 203 }
 204
 205 AudioFileModel FileListModel::getFile(const QModelIndex &index)
 206 {
 207         if(index.row() >= 0 && index.row() < m_fileList.count())
 208         {
 209                 return m_fileList.at(index.row());
 210         }
 211         else
 212         {
 213                 return AudioFileModel();
 214         }
 215 }
 216
 217 AudioFileModel &FileListModel::operator[] (const QModelIndex &index)
 218 {
 219         return m_fileList[index.row()];
 220 }
 221
 222 bool FileListModel::setFile(const QModelIndex &index, const AudioFileModel &audioFile)
 223 {
 224         if(index.row() >= 0 && index.row() < m_fileList.count())
 225         {
 226                 beginResetModel();
 227                 m_fileList.replace(index.row(), audioFile);
 228                 endResetModel();
 229                 return true;
 230         }
 231         else
 232         {
 233                 return false;
 234         }
 235 }
 236
 237 int FileListModel::exportToCsv(const QString &outFile)
 238 {
 239         const int nFiles = m_fileList.count();
 240
 241         bool havePosition = false, haveTitle = false, haveArtist = false, haveAlbum = false, haveGenre = false, haveYear = false, haveComment = false;
 242
 243         for(int i = 0; i < nFiles; i++)
 244         {
 245                 if(m_fileList.at(i).filePosition() > 0) havePosition = true;
 246                 if(!m_fileList.at(i).fileName().isEmpty()) haveTitle = true;
 247                 if(!m_fileList.at(i).fileArtist().isEmpty()) haveArtist = true;
 248                 if(!m_fileList.at(i).fileAlbum().isEmpty()) haveAlbum = true;
 249                 if(!m_fileList.at(i).fileGenre().isEmpty()) haveGenre = true;
 250                 if(m_fileList.at(i).fileYear() > 0) haveYear = true;
 251                 if(!m_fileList.at(i).fileComment().isEmpty()) haveComment = true;
 252         }
 253
 254         if(!(haveTitle || haveArtist || haveAlbum || haveGenre || haveYear || haveComment))
 255         {
 256                 return CsvError_NoTags;
 257         }
 258
 259         QFile file(outFile);
 260
 261         if(!file.open(QIODevice::WriteOnly))
 262         {
 263                 return CsvError_FileOpen;
 264         }
 265         else
 266         {
 267                 QStringList line;
 268
 269                 if(havePosition) line << "POSITION";
 270                 if(haveTitle) line << "TITLE";
 271                 if(haveArtist) line << "ARTIST";
 272                 if(haveAlbum) line << "ALBUM";
 273                 if(haveGenre) line << "GENRE";
 274                 if(haveYear) line << "YEAR";
 275                 if(haveComment) line << "COMMENT";
 276
 277                 if(file.write(line.join(";").append("\r\n").toUtf8().prepend("\xef\xbb\xbf")) < 1)
 278                 {
 279                         file.close();
 280                         return CsvError_FileWrite;
 281                 }
 282         }
 283
 284         for(int i = 0; i < nFiles; i++)
 285         {
 286                 QStringList line;
 287
 288                 if(havePosition) line << QString::number(m_fileList.at(i).filePosition());
 289                 if(haveTitle) line << m_fileList.at(i).fileName().trimmed();
 290                 if(haveArtist) line << m_fileList.at(i).fileArtist().trimmed();
 291                 if(haveAlbum) line << m_fileList.at(i).fileAlbum().trimmed();
 292                 if(haveGenre) line << m_fileList.at(i).fileGenre().trimmed();
 293                 if(haveYear) line << QString::number(m_fileList.at(i).fileYear());
 294                 if(haveComment) line << m_fileList.at(i).fileComment().trimmed();
 295
 296                 if(file.write(line.replaceInStrings(";", ",").join(";").append("\r\n").toUtf8()) < 1)
 297                 {
 298                         file.close();
 299                         return CsvError_FileWrite;
 300                 }
 301         }
 302
 303         file.close();
 304         return CsvError_OK;
 305 }
 306
 307 int FileListModel::importFromCsv(QWidget *parent, const QString &inFile)
 308 {
 309         QFile file(inFile);
 310         if(!file.open(QIODevice::ReadOnly))
 311         {
 312                 return CsvError_FileOpen;
 313         }
 314
 315         QTextCodec *codec = NULL;
 316         QByteArray bomCheck = file.peek(16);
 317
 318         if((!bomCheck.isEmpty()) && bomCheck.startsWith("\xef\xbb\xbf"))
 319         {
 320                 codec = QTextCodec::codecForName("UTF-8");
 321         }
 322         else if((!bomCheck.isEmpty()) && bomCheck.startsWith("\xff\xfe"))
 323         {
 324                 codec = QTextCodec::codecForName("UTF-16LE");
 325         }
 326         else if((!bomCheck.isEmpty()) && bomCheck.startsWith("\xfe\xff"))
 327         {
 328                 codec = QTextCodec::codecForName("UTF-16BE");
 329         }
 330         else
 331         {
 332                 const QString systemDefault = tr("(System Default)");
 333
 334                 QStringList codecList;
 335                 codecList.append(systemDefault);
 336                 codecList.append(lamexp_available_codepages());
 337
 338                 QInputDialog *input = new QInputDialog(parent);
 339                 input->setLabelText(EXPAND(tr("Select ANSI Codepage for CSV file:")));
 340                 input->setOkButtonText(tr("OK"));
 341                 input->setCancelButtonText(tr("Cancel"));
 342                 input->setTextEchoMode(QLineEdit::Normal);
 343                 input->setComboBoxItems(codecList);
 344
 345                 if(input->exec() < 1)
 346                 {
 347                         LAMEXP_DELETE(input);
 348                         return CsvError_Aborted;
 349                 }
 350
 351                 if(input->textValue().compare(systemDefault, Qt::CaseInsensitive))
 352                 {
 353                         qDebug("User-selected codec is: %s", input->textValue().toLatin1().constData());
 354                         codec = QTextCodec::codecForName(input->textValue().toLatin1().constData());
 355                 }
 356                 else
 357                 {
 358                         qDebug("Going to use the system's default codec!");
 359                         codec = QTextCodec::codecForName("System");
 360                 }
 361
 362                 LAMEXP_DELETE(input);
 363         }
 364
 365         bomCheck.clear();
 366
 367         //----------------------//
 368
 369         QTextStream stream(&file);
 370         stream.setAutoDetectUnicode(false);
 371         stream.setCodec(codec);
 372
 373         QString headerLine = stream.readLine().simplified();
 374
 375         while(headerLine.isEmpty())
 376         {
 377                 if(stream.atEnd())
 378                 {
 379                         qWarning("The file appears to be empty!");
 380                         return CsvError_FileRead;
 381                 }
 382                 qWarning("Skipping a blank line at beginning of CSV file!");
 383                 headerLine = stream.readLine().simplified();
 384         }
 385
 386         QStringList header = headerLine.split(";", QString::KeepEmptyParts);
 387
 388         const int nCols = header.count();
 389         const int nFiles = m_fileList.count();
 390
 391         if(nCols < 1)
 392         {
 393                 qWarning("Header appears to be empty!");
 394                 return CsvError_FileRead;
 395         }
 396
 397         bool *ignore = new bool[nCols];
 398         memset(ignore, 0, sizeof(bool) * nCols);
 399
 400         for(int i = 0; i < nCols; i++)
 401         {
 402                 if((header[i] = header[i].trimmed()).isEmpty())
 403                 {
 404                         ignore[i] = true;
 405                 }
 406         }
 407
 408         //----------------------//
 409
 410         for(int i = 0; i < nFiles; i++)
 411         {
 412                 if(stream.atEnd())
 413                 {
 414                         LAMEXP_DELETE_ARRAY(ignore);
 415                         return CsvError_Incomplete;
 416                 }
 417
 418                 QString line = stream.readLine().simplified();
 419
 420                 if(line.isEmpty())
 421                 {
 422                         qWarning("Skipping a blank line in CSV file!");
 423                         continue;
 424                 }
 425
 426                 QStringList data = line.split(";", QString::KeepEmptyParts);
 427
 428                 if(data.count() < header.count())
 429                 {
 430                         qWarning("Skipping an incomplete line in CSV file!");
 431                         continue;
 432                 }
 433
 434                 for(int j = 0; j < nCols; j++)
 435                 {
 436                         if(ignore[j])
 437                         {
 438                                 continue;
 439                         }
 440                         else if(CHECK_HDR(header.at(j), "POSITION"))
 441                         {
 442                                 bool ok = false;
 443                                 unsigned int temp = data.at(j).trimmed().toUInt(&ok);
 444                                 if(ok) m_fileList[i].setFilePosition(temp);
 445                         }
 446                         else if(CHECK_HDR(header.at(j), "TITLE"))
 447                         {
 448                                 QString temp = data.at(j).trimmed();
 449                                 if(!temp.isEmpty()) m_fileList[i].setFileName(temp);
 450                         }
 451                         else if(CHECK_HDR(header.at(j), "ARTIST"))
 452                         {
 453                                 QString temp = data.at(j).trimmed();
 454                                 if(!temp.isEmpty()) m_fileList[i].setFileArtist(temp);
 455                         }
 456                         else if(CHECK_HDR(header.at(j), "ALBUM"))
 457                         {
 458                                 QString temp = data.at(j).trimmed();
 459                                 if(!temp.isEmpty()) m_fileList[i].setFileAlbum(temp);
 460                         }
 461                         else if(CHECK_HDR(header.at(j), "GENRE"))
 462                         {
 463                                 QString temp = data.at(j).trimmed();
 464                                 if(!temp.isEmpty()) m_fileList[i].setFileGenre(temp);
 465                         }
 466                         else if(CHECK_HDR(header.at(j), "YEAR"))
 467                         {
 468                                 bool ok = false;
 469                                 unsigned int temp = data.at(j).trimmed().toUInt(&ok);
 470                                 if(ok) m_fileList[i].setFileYear(temp);
 471                         }
 472                         else if(CHECK_HDR(header.at(j), "COMMENT"))
 473                         {
 474                                 QString temp = data.at(j).trimmed();
 475                                 if(!temp.isEmpty()) m_fileList[i].setFileComment(temp);
 476                         }
 477                         else
 478                         {
 479                                 qWarning("Unkonw field '%s' will be ignored!", header.at(j).toUtf8().constData());
 480                                 ignore[j] = true;
 481
 482                                 if(!checkArray(ignore, false, nCols))
 483                                 {
 484                                         qWarning("No known fields left, aborting!");
 485                                         return CsvError_NoTags;
 486                                 }
 487                         }
 488                 }
 489         }
 490
 491         //----------------------//
 492
 493         LAMEXP_DELETE_ARRAY(ignore);
 494         return CsvError_OK;
 495 }
 496
 497 bool FileListModel::checkArray(const bool *a, const bool val, size_t len)
 498 {
 499         for(size_t i = 0; i < len; i++)
 500         {
 501                 if(a[i] == val) return true;
 502         }
 503
 504         return false;
 505 }