annotate data/fileio/FileSource.cpp @ 763:2b3a8ae04597 qt5

Get remainder of svcore building with Qt5
author Chris Cannam
date Mon, 11 Mar 2013 13:55:22 +0000
parents 3b2409646cc0
children 95d4a59295b7
rev   line source
Chris@208 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@208 2
Chris@208 3 /*
Chris@208 4 Sonic Visualiser
Chris@208 5 An audio file viewer and annotation editor.
Chris@208 6 Centre for Digital Music, Queen Mary, University of London.
Chris@208 7 This file copyright 2007 QMUL.
Chris@208 8
Chris@208 9 This program is free software; you can redistribute it and/or
Chris@208 10 modify it under the terms of the GNU General Public License as
Chris@208 11 published by the Free Software Foundation; either version 2 of the
Chris@208 12 License, or (at your option) any later version. See the file
Chris@208 13 COPYING included with this distribution for more information.
Chris@208 14 */
Chris@208 15
Chris@317 16 #include "FileSource.h"
Chris@357 17
Chris@208 18 #include "base/TempDirectory.h"
Chris@208 19 #include "base/Exceptions.h"
Chris@392 20 #include "base/ProgressReporter.h"
Chris@502 21 #include "system/System.h"
Chris@208 22
Chris@762 23 #include <QNetworkAccessManager>
Chris@762 24 #include <QNetworkReply>
Chris@208 25 #include <QFileInfo>
Chris@208 26 #include <QDir>
Chris@392 27 #include <QCoreApplication>
Chris@208 28
Chris@208 29 #include <iostream>
Chris@405 30 #include <cstdlib>
Chris@208 31
Chris@608 32 #include <unistd.h>
Chris@608 33
Chris@763 34 //#define DEBUG_FILE_SOURCE 1
Chris@327 35
Chris@208 36 int
Chris@317 37 FileSource::m_count = 0;
Chris@208 38
Chris@208 39 QMutex
Chris@317 40 FileSource::m_fileCreationMutex;
Chris@208 41
Chris@317 42 FileSource::RemoteRefCountMap
Chris@317 43 FileSource::m_refCountMap;
Chris@304 44
Chris@317 45 FileSource::RemoteLocalMap
Chris@317 46 FileSource::m_remoteLocalMap;
Chris@304 47
Chris@304 48 QMutex
Chris@317 49 FileSource::m_mapMutex;
Chris@304 50
Chris@529 51 #ifdef DEBUG_FILE_SOURCE
Chris@529 52 static int extantCount = 0;
Chris@529 53 static std::map<QString, int> urlExtantCountMap;
Chris@529 54 static void incCount(QString url) {
Chris@529 55 ++extantCount;
Chris@529 56 if (urlExtantCountMap.find(url) == urlExtantCountMap.end()) {
Chris@529 57 urlExtantCountMap[url] = 1;
Chris@529 58 } else {
Chris@529 59 ++urlExtantCountMap[url];
Chris@529 60 }
Chris@529 61 std::cerr << "FileSource: Now " << urlExtantCountMap[url] << " for this url, " << extantCount << " total" << std::endl;
Chris@529 62 }
Chris@529 63 static void decCount(QString url) {
Chris@529 64 --extantCount;
Chris@529 65 --urlExtantCountMap[url];
Chris@529 66 std::cerr << "FileSource: Now " << urlExtantCountMap[url] << " for this url, " << extantCount << " total" << std::endl;
Chris@529 67 }
Chris@529 68 #endif
Chris@529 69
Chris@762 70 static QNetworkAccessManager nm;
Chris@762 71
Chris@520 72 FileSource::FileSource(QString fileOrUrl, ProgressReporter *reporter,
Chris@520 73 QString preferredContentType) :
Chris@614 74 m_url(fileOrUrl, QUrl::StrictMode),
Chris@316 75 m_localFile(0),
Chris@762 76 m_reply(0),
Chris@520 77 m_preferredContentType(preferredContentType),
Chris@316 78 m_ok(false),
Chris@316 79 m_lastStatus(0),
Chris@706 80 m_resource(fileOrUrl.startsWith(':')),
Chris@316 81 m_remote(isRemote(fileOrUrl)),
Chris@316 82 m_done(false),
Chris@316 83 m_leaveLocalFile(false),
Chris@392 84 m_reporter(reporter),
Chris@316 85 m_refCounted(false)
Chris@316 86 {
Chris@706 87 if (m_resource) { // qrc file
Chris@706 88 m_url = QUrl("qrc" + fileOrUrl);
Chris@706 89 }
Chris@706 90
Chris@661 91 if (m_url.toString() == "") {
Chris@661 92 m_url = QUrl(fileOrUrl, QUrl::TolerantMode);
Chris@661 93 }
Chris@661 94
Chris@327 95 #ifdef DEBUG_FILE_SOURCE
Chris@706 96 std::cerr << "FileSource::FileSource(" << fileOrUrl << "): url <" << m_url.toString() << ">" << std::endl;
Chris@529 97 incCount(m_url.toString());
Chris@327 98 #endif
Chris@316 99
Chris@316 100 if (!canHandleScheme(m_url)) {
Chris@762 101 std::cerr << "FileSource::FileSource: ERROR: Unsupported scheme in URL \"" << m_url.toString() << "\"" << std::endl;
Chris@316 102 m_errorString = tr("Unsupported scheme in URL");
Chris@316 103 return;
Chris@316 104 }
Chris@316 105
Chris@357 106 init();
Chris@316 107
Chris@614 108 if (!isRemote() &&
Chris@614 109 !isAvailable()) {
Chris@614 110 #ifdef DEBUG_FILE_SOURCE
Chris@706 111 std::cerr << "FileSource::FileSource: Failed to open local file with URL \"" << m_url.toString() << "\"; trying again assuming filename was encoded" << std::endl;
Chris@614 112 #endif
Chris@762 113 m_url = QUrl::fromEncoded(fileOrUrl.toLatin1());
Chris@614 114 init();
Chris@614 115 }
Chris@614 116
Chris@316 117 if (isRemote() &&
Chris@316 118 (fileOrUrl.contains('%') ||
Chris@316 119 fileOrUrl.contains("--"))) { // for IDNA
Chris@316 120
Chris@316 121 waitForStatus();
Chris@316 122
Chris@316 123 if (!isAvailable()) {
Chris@336 124
Chris@316 125 // The URL was created on the assumption that the string
Chris@316 126 // was human-readable. Let's try again, this time
Chris@316 127 // assuming it was already encoded.
Chris@317 128 std::cerr << "FileSource::FileSource: Failed to retrieve URL \""
Chris@316 129 << fileOrUrl.toStdString()
Chris@316 130 << "\" as human-readable URL; "
Chris@316 131 << "trying again treating it as encoded URL"
Chris@316 132 << std::endl;
Chris@336 133
Chris@336 134 // even though our cache file doesn't exist (because the
Chris@336 135 // resource was 404), we still need to ensure we're no
Chris@336 136 // longer associating a filename with this url in the
Chris@336 137 // refcount map -- or createCacheFile will think we've
Chris@336 138 // already done all the work and no request will be sent
Chris@336 139 deleteCacheFile();
Chris@336 140
Chris@762 141 m_url = QUrl::fromEncoded(fileOrUrl.toLatin1());
Chris@336 142
Chris@336 143 m_ok = false;
Chris@336 144 m_done = false;
Chris@336 145 m_lastStatus = 0;
Chris@357 146 init();
Chris@316 147 }
Chris@316 148 }
Chris@325 149
Chris@325 150 if (!isRemote()) {
Chris@325 151 emit statusAvailable();
Chris@325 152 emit ready();
Chris@325 153 }
Chris@497 154
Chris@504 155 #ifdef DEBUG_FILE_SOURCE
Chris@762 156 std::cerr << "FileSource::FileSource(string) exiting" << std::endl;
Chris@504 157 #endif
Chris@316 158 }
Chris@316 159
Chris@469 160 FileSource::FileSource(QUrl url, ProgressReporter *reporter) :
Chris@304 161 m_url(url),
Chris@208 162 m_localFile(0),
Chris@762 163 m_reply(0),
Chris@208 164 m_ok(false),
Chris@210 165 m_lastStatus(0),
Chris@706 166 m_resource(false),
Chris@316 167 m_remote(isRemote(url.toString())),
Chris@208 168 m_done(false),
Chris@316 169 m_leaveLocalFile(false),
Chris@392 170 m_reporter(reporter),
Chris@316 171 m_refCounted(false)
Chris@208 172 {
Chris@327 173 #ifdef DEBUG_FILE_SOURCE
Chris@762 174 std::cerr << "FileSource::FileSource(" << url.toString() << ") [as url]" << std::endl;
Chris@529 175 incCount(m_url.toString());
Chris@327 176 #endif
Chris@316 177
Chris@316 178 if (!canHandleScheme(m_url)) {
Chris@762 179 std::cerr << "FileSource::FileSource: ERROR: Unsupported scheme in URL \"" << m_url.toString() << "\"" << std::endl;
Chris@316 180 m_errorString = tr("Unsupported scheme in URL");
Chris@208 181 return;
Chris@208 182 }
Chris@208 183
Chris@357 184 init();
Chris@497 185
Chris@504 186 #ifdef DEBUG_FILE_SOURCE
Chris@762 187 std::cerr << "FileSource::FileSource(url) exiting" << std::endl;
Chris@504 188 #endif
Chris@316 189 }
Chris@304 190
Chris@317 191 FileSource::FileSource(const FileSource &rf) :
Chris@316 192 QObject(),
Chris@316 193 m_url(rf.m_url),
Chris@316 194 m_localFile(0),
Chris@762 195 m_reply(0),
Chris@316 196 m_ok(rf.m_ok),
Chris@316 197 m_lastStatus(rf.m_lastStatus),
Chris@706 198 m_resource(rf.m_resource),
Chris@316 199 m_remote(rf.m_remote),
Chris@316 200 m_done(false),
Chris@316 201 m_leaveLocalFile(false),
Chris@392 202 m_reporter(rf.m_reporter),
Chris@316 203 m_refCounted(false)
Chris@316 204 {
Chris@327 205 #ifdef DEBUG_FILE_SOURCE
Chris@762 206 std::cerr << "FileSource::FileSource(" << m_url.toString() << ") [copy ctor]" << std::endl;
Chris@529 207 incCount(m_url.toString());
Chris@327 208 #endif
Chris@304 209
Chris@316 210 if (!canHandleScheme(m_url)) {
Chris@762 211 std::cerr << "FileSource::FileSource: ERROR: Unsupported scheme in URL \"" << m_url.toString() << "\"" << std::endl;
Chris@316 212 m_errorString = tr("Unsupported scheme in URL");
Chris@304 213 return;
Chris@304 214 }
Chris@304 215
Chris@469 216 if (!isRemote()) {
Chris@316 217 m_localFilename = rf.m_localFilename;
Chris@316 218 } else {
Chris@316 219 QMutexLocker locker(&m_mapMutex);
Chris@327 220 #ifdef DEBUG_FILE_SOURCE
Chris@762 221 std::cerr << "FileSource::FileSource(copy ctor): ref count is "
Chris@762 222 << m_refCountMap[m_url] << std::endl;
Chris@327 223 #endif
Chris@316 224 if (m_refCountMap[m_url] > 0) {
Chris@316 225 m_refCountMap[m_url]++;
Chris@327 226 #ifdef DEBUG_FILE_SOURCE
Chris@316 227 std::cerr << "raised it to " << m_refCountMap[m_url] << std::endl;
Chris@327 228 #endif
Chris@316 229 m_localFilename = m_remoteLocalMap[m_url];
Chris@316 230 m_refCounted = true;
Chris@316 231 } else {
Chris@316 232 m_ok = false;
Chris@316 233 m_lastStatus = 404;
Chris@316 234 }
Chris@316 235 }
Chris@316 236
Chris@316 237 m_done = true;
Chris@497 238
Chris@504 239 #ifdef DEBUG_FILE_SOURCE
Chris@762 240 std::cerr << "FileSource::FileSource(" << m_url.toString() << ") [copy ctor]: note: local filename is \"" << m_localFilename << "\"" << std::endl;
Chris@527 241 #endif
Chris@527 242
Chris@527 243 #ifdef DEBUG_FILE_SOURCE
Chris@762 244 std::cerr << "FileSource::FileSource(copy ctor) exiting" << std::endl;
Chris@504 245 #endif
Chris@316 246 }
Chris@316 247
Chris@317 248 FileSource::~FileSource()
Chris@316 249 {
Chris@327 250 #ifdef DEBUG_FILE_SOURCE
Chris@686 251 std::cerr << "FileSource(" << m_url.toString() << ")::~FileSource" << std::endl;
Chris@529 252 decCount(m_url.toString());
Chris@327 253 #endif
Chris@316 254
Chris@316 255 cleanup();
Chris@316 256
Chris@469 257 if (isRemote() && !m_leaveLocalFile) deleteCacheFile();
Chris@316 258 }
Chris@316 259
Chris@316 260 void
Chris@357 261 FileSource::init()
Chris@316 262 {
Chris@706 263 if (isResource()) {
Chris@355 264 #ifdef DEBUG_FILE_SOURCE
Chris@706 265 std::cerr << "FileSource::init: Is a resource" << std::endl;
Chris@706 266 #endif
Chris@706 267 QString resourceFile = m_url.toString();
Chris@706 268 resourceFile.replace(QRegExp("^qrc:"), ":");
Chris@706 269
Chris@706 270 if (!QFileInfo(resourceFile).exists()) {
Chris@706 271 #ifdef DEBUG_FILE_SOURCE
Chris@706 272 std::cerr << "FileSource::init: Resource file of this name does not exist, switching to non-resource URL" << std::endl;
Chris@706 273 #endif
Chris@706 274 m_url = resourceFile;
Chris@706 275 m_resource = false;
Chris@706 276 }
Chris@706 277 }
Chris@706 278
Chris@706 279 if (!isRemote() && !isResource()) {
Chris@706 280 #ifdef DEBUG_FILE_SOURCE
Chris@706 281 std::cerr << "FileSource::init: Not a remote URL" << std::endl;
Chris@355 282 #endif
Chris@355 283 bool literal = false;
Chris@316 284 m_localFilename = m_url.toLocalFile();
Chris@342 285 if (m_localFilename == "") {
Chris@342 286 // QUrl may have mishandled the scheme (e.g. in a DOS path)
Chris@342 287 m_localFilename = m_url.toString();
Chris@355 288 literal = true;
Chris@342 289 }
Chris@439 290 m_localFilename = QFileInfo(m_localFilename).absoluteFilePath();
Chris@439 291
Chris@355 292 #ifdef DEBUG_FILE_SOURCE
Chris@706 293 std::cerr << "FileSource::init: URL translates to local filename \""
Chris@706 294 << m_localFilename << "\" (with literal=" << literal << ")"
Chris@706 295 << std::endl;
Chris@355 296 #endif
Chris@316 297 m_ok = true;
Chris@355 298 m_lastStatus = 200;
Chris@355 299
Chris@316 300 if (!QFileInfo(m_localFilename).exists()) {
Chris@355 301 if (literal) {
Chris@355 302 m_lastStatus = 404;
Chris@355 303 } else {
Chris@614 304 #ifdef DEBUG_FILE_SOURCE
Chris@706 305 std::cerr << "FileSource::init: Local file of this name does not exist, trying URL as a literal filename" << std::endl;
Chris@614 306 #endif
Chris@355 307 // Again, QUrl may have been mistreating us --
Chris@355 308 // e.g. dropping a part that looks like query data
Chris@355 309 m_localFilename = m_url.toString();
Chris@355 310 literal = true;
Chris@355 311 if (!QFileInfo(m_localFilename).exists()) {
Chris@355 312 m_lastStatus = 404;
Chris@355 313 }
Chris@355 314 }
Chris@316 315 }
Chris@355 316
Chris@316 317 m_done = true;
Chris@316 318 return;
Chris@316 319 }
Chris@316 320
Chris@316 321 if (createCacheFile()) {
Chris@327 322 #ifdef DEBUG_FILE_SOURCE
Chris@706 323 std::cerr << "FileSource::init: Already have this one" << std::endl;
Chris@327 324 #endif
Chris@316 325 m_ok = true;
Chris@316 326 if (!QFileInfo(m_localFilename).exists()) {
Chris@316 327 m_lastStatus = 404;
Chris@316 328 } else {
Chris@316 329 m_lastStatus = 200;
Chris@316 330 }
Chris@316 331 m_done = true;
Chris@316 332 return;
Chris@316 333 }
Chris@316 334
Chris@208 335 if (m_localFilename == "") return;
Chris@706 336
Chris@208 337 m_localFile = new QFile(m_localFilename);
Chris@208 338 m_localFile->open(QFile::WriteOnly);
Chris@208 339
Chris@706 340 if (isResource()) {
Chris@706 341
Chris@706 342 // Absent resource file case was dealt with at the top -- this
Chris@706 343 // is the successful case
Chris@706 344
Chris@706 345 QString resourceFileName = m_url.toString();
Chris@706 346 resourceFileName.replace(QRegExp("^qrc:"), ":");
Chris@706 347 QFile resourceFile(resourceFileName);
Chris@706 348 resourceFile.open(QFile::ReadOnly);
Chris@706 349 QByteArray ba(resourceFile.readAll());
Chris@706 350
Chris@706 351 #ifdef DEBUG_FILE_SOURCE
Chris@706 352 std::cerr << "Copying " << ba.size() << " bytes from resource file to cache file" << std::endl;
Chris@706 353 #endif
Chris@706 354
Chris@706 355 qint64 written = m_localFile->write(ba);
Chris@706 356 m_localFile->close();
Chris@706 357 delete m_localFile;
Chris@706 358 m_localFile = 0;
Chris@706 359
Chris@706 360 if (written != ba.size()) {
Chris@706 361 #ifdef DEBUG_FILE_SOURCE
Chris@706 362 std::cerr << "Copy failed (wrote " << written << " bytes)" << std::endl;
Chris@706 363 #endif
Chris@706 364 m_ok = false;
Chris@706 365 return;
Chris@706 366 } else {
Chris@706 367 m_ok = true;
Chris@706 368 m_lastStatus = 200;
Chris@706 369 m_done = true;
Chris@706 370 }
Chris@706 371
Chris@706 372 } else {
Chris@706 373
Chris@706 374 QString scheme = m_url.scheme().toLower();
Chris@316 375
Chris@327 376 #ifdef DEBUG_FILE_SOURCE
Chris@706 377 std::cerr << "FileSource::init: Don't have local copy of \""
Chris@706 378 << m_url.toString() << "\", retrieving" << std::endl;
Chris@327 379 #endif
Chris@208 380
Chris@762 381 if (scheme == "http" || scheme == "https" || scheme == "ftp") {
Chris@762 382 initRemote();
Chris@520 383 #ifdef DEBUG_FILE_SOURCE
Chris@762 384 std::cerr << "FileSource: initRemote returned" << std::endl;
Chris@520 385 #endif
Chris@706 386 } else {
Chris@706 387 m_remote = false;
Chris@706 388 m_ok = false;
Chris@706 389 }
Chris@208 390 }
Chris@208 391
Chris@208 392 if (m_ok) {
Chris@316 393
Chris@316 394 QMutexLocker locker(&m_mapMutex);
Chris@316 395
Chris@316 396 if (m_refCountMap[m_url] > 0) {
Chris@316 397 // someone else has been doing the same thing at the same time,
Chris@316 398 // but has got there first
Chris@316 399 cleanup();
Chris@316 400 m_refCountMap[m_url]++;
Chris@327 401 #ifdef DEBUG_FILE_SOURCE
Chris@706 402 std::cerr << "FileSource::init: Another FileSource has got there first, abandoning our download and using theirs" << std::endl;
Chris@327 403 #endif
Chris@316 404 m_localFilename = m_remoteLocalMap[m_url];
Chris@316 405 m_refCounted = true;
Chris@316 406 m_ok = true;
Chris@316 407 if (!QFileInfo(m_localFilename).exists()) {
Chris@316 408 m_lastStatus = 404;
Chris@316 409 }
Chris@316 410 m_done = true;
Chris@316 411 return;
Chris@316 412 }
Chris@304 413
Chris@304 414 m_remoteLocalMap[m_url] = m_localFilename;
Chris@304 415 m_refCountMap[m_url]++;
Chris@316 416 m_refCounted = true;
Chris@304 417
Chris@706 418 if (m_reporter && !m_done) {
Chris@392 419 m_reporter->setMessage
Chris@392 420 (tr("Downloading %1...").arg(m_url.toString()));
Chris@392 421 connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
Chris@357 422 connect(this, SIGNAL(progress(int)),
Chris@392 423 m_reporter, SLOT(setProgress(int)));
Chris@316 424 }
Chris@208 425 }
Chris@208 426 }
Chris@208 427
Chris@316 428 void
Chris@762 429 FileSource::initRemote()
Chris@208 430 {
Chris@316 431 m_ok = true;
Chris@316 432
Chris@762 433 QNetworkRequest req;
Chris@762 434 req.setUrl(m_url);
Chris@762 435
Chris@762 436 if (m_preferredContentType != "") {
Chris@520 437 #ifdef DEBUG_FILE_SOURCE
Chris@520 438 std::cerr << "FileSource: indicating preferred content type of \""
Chris@686 439 << m_preferredContentType << "\"" << std::endl;
Chris@520 440 #endif
Chris@762 441 req.setRawHeader
Chris@762 442 ("Accept",
Chris@762 443 QString("%1, */*").arg(m_preferredContentType).toLatin1());
Chris@520 444 }
Chris@316 445
Chris@762 446 m_reply = nm.get(req);
Chris@762 447
Chris@762 448 connect(m_reply, SIGNAL(readyRead()),
Chris@762 449 this, SLOT(readyRead()));
Chris@762 450 connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)),
Chris@762 451 this, SLOT(replyFailed(QNetworkReply::NetworkError)));
Chris@762 452 connect(m_reply, SIGNAL(finished()),
Chris@762 453 this, SLOT(replyFinished()));
Chris@762 454 connect(m_reply, SIGNAL(metadataChanged()),
Chris@762 455 this, SLOT(metadataChanged()));
Chris@762 456 connect(m_reply, SIGNAL(downloadProgress(qint64, qint64)),
Chris@762 457 this, SLOT(downloadProgress(qint64, qint64)));
Chris@211 458 }
Chris@211 459
Chris@211 460 void
Chris@317 461 FileSource::cleanup()
Chris@211 462 {
Chris@470 463 if (m_done) {
Chris@470 464 delete m_localFile; // does not actually delete the file
Chris@470 465 m_localFile = 0;
Chris@470 466 }
Chris@211 467 m_done = true;
Chris@762 468 if (m_reply) {
Chris@762 469 QNetworkReply *r = m_reply;
Chris@762 470 m_reply = 0;
Chris@762 471 r->abort();
Chris@762 472 r->deleteLater();
Chris@214 473 }
Chris@470 474 if (m_localFile) {
Chris@470 475 delete m_localFile; // does not actually delete the file
Chris@470 476 m_localFile = 0;
Chris@470 477 }
Chris@208 478 }
Chris@208 479
Chris@208 480 bool
Chris@317 481 FileSource::isRemote(QString fileOrUrl)
Chris@304 482 {
Chris@342 483 // Note that a "scheme" with length 1 is probably a DOS drive letter
Chris@316 484 QString scheme = QUrl(fileOrUrl).scheme().toLower();
Chris@342 485 if (scheme == "" || scheme == "file" || scheme.length() == 1) return false;
Chris@342 486 return true;
Chris@304 487 }
Chris@304 488
Chris@304 489 bool
Chris@317 490 FileSource::canHandleScheme(QUrl url)
Chris@208 491 {
Chris@342 492 // Note that a "scheme" with length 1 is probably a DOS drive letter
Chris@208 493 QString scheme = url.scheme().toLower();
Chris@762 494 return (scheme == "http" || scheme == "https" ||
Chris@762 495 scheme == "ftp" || scheme == "file" || scheme == "qrc" ||
Chris@706 496 scheme == "" || scheme.length() == 1);
Chris@208 497 }
Chris@208 498
Chris@210 499 bool
Chris@317 500 FileSource::isAvailable()
Chris@210 501 {
Chris@316 502 waitForStatus();
Chris@211 503 bool available = true;
Chris@211 504 if (!m_ok) available = false;
Chris@211 505 else available = (m_lastStatus / 100 == 2);
Chris@327 506 #ifdef DEBUG_FILE_SOURCE
Chris@762 507 std::cerr << "FileSource::isAvailable: " << (available ? "yes" : "no")
Chris@762 508 << std::endl;
Chris@327 509 #endif
Chris@211 510 return available;
Chris@210 511 }
Chris@210 512
Chris@208 513 void
Chris@317 514 FileSource::waitForStatus()
Chris@316 515 {
Chris@316 516 while (m_ok && (!m_done && m_lastStatus == 0)) {
Chris@316 517 // std::cerr << "waitForStatus: processing (last status " << m_lastStatus << ")" << std::endl;
Chris@392 518 QCoreApplication::processEvents();
Chris@316 519 }
Chris@316 520 }
Chris@316 521
Chris@316 522 void
Chris@317 523 FileSource::waitForData()
Chris@208 524 {
Chris@211 525 while (m_ok && !m_done) {
Chris@762 526 // std::cerr << "FileSource::waitForData: calling QApplication::processEvents" << std::endl;
Chris@392 527 QCoreApplication::processEvents();
Chris@497 528 usleep(10000);
Chris@208 529 }
Chris@208 530 }
Chris@208 531
Chris@316 532 void
Chris@317 533 FileSource::setLeaveLocalFile(bool leave)
Chris@316 534 {
Chris@316 535 m_leaveLocalFile = leave;
Chris@316 536 }
Chris@316 537
Chris@208 538 bool
Chris@317 539 FileSource::isOK() const
Chris@208 540 {
Chris@208 541 return m_ok;
Chris@208 542 }
Chris@208 543
Chris@208 544 bool
Chris@317 545 FileSource::isDone() const
Chris@208 546 {
Chris@208 547 return m_done;
Chris@208 548 }
Chris@208 549
Chris@316 550 bool
Chris@706 551 FileSource::isResource() const
Chris@706 552 {
Chris@706 553 return m_resource;
Chris@706 554 }
Chris@706 555
Chris@706 556 bool
Chris@317 557 FileSource::isRemote() const
Chris@316 558 {
Chris@316 559 return m_remote;
Chris@316 560 }
Chris@316 561
Chris@316 562 QString
Chris@317 563 FileSource::getLocation() const
Chris@316 564 {
Chris@316 565 return m_url.toString();
Chris@316 566 }
Chris@316 567
Chris@208 568 QString
Chris@317 569 FileSource::getLocalFilename() const
Chris@208 570 {
Chris@208 571 return m_localFilename;
Chris@208 572 }
Chris@208 573
Chris@208 574 QString
Chris@678 575 FileSource::getBasename() const
Chris@678 576 {
Chris@678 577 return QFileInfo(m_localFilename).fileName();
Chris@678 578 }
Chris@678 579
Chris@678 580 QString
Chris@317 581 FileSource::getContentType() const
Chris@316 582 {
Chris@316 583 return m_contentType;
Chris@316 584 }
Chris@316 585
Chris@316 586 QString
Chris@317 587 FileSource::getExtension() const
Chris@316 588 {
Chris@316 589 if (m_localFilename != "") {
Chris@316 590 return QFileInfo(m_localFilename).suffix().toLower();
Chris@316 591 } else {
Chris@316 592 return QFileInfo(m_url.toLocalFile()).suffix().toLower();
Chris@316 593 }
Chris@316 594 }
Chris@316 595
Chris@316 596 QString
Chris@317 597 FileSource::getErrorString() const
Chris@208 598 {
Chris@208 599 return m_errorString;
Chris@208 600 }
Chris@208 601
Chris@208 602 void
Chris@762 603 FileSource::readyRead()
Chris@208 604 {
Chris@762 605 m_localFile->write(m_reply->readAll());
Chris@208 606 }
Chris@208 607
Chris@208 608 void
Chris@762 609 FileSource::metadataChanged()
Chris@210 610 {
Chris@520 611 #ifdef DEBUG_FILE_SOURCE
Chris@762 612 std::cerr << "FileSource::metadataChanged" << std::endl;
Chris@520 613 #endif
Chris@497 614
Chris@762 615 if (!m_reply) {
Chris@762 616 std::cerr << "WARNING: FileSource::metadataChanged() called without a reply object being known to us" << std::endl;
Chris@762 617 return;
Chris@762 618 }
Chris@762 619
Chris@762 620 int status =
Chris@762 621 m_reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
Chris@762 622
Chris@762 623 if (status / 100 == 3) {
Chris@762 624 QString location = m_reply->header
Chris@762 625 (QNetworkRequest::LocationHeader).toString();
Chris@496 626 #ifdef DEBUG_FILE_SOURCE
Chris@762 627 std::cerr << "FileSource::metadataChanged: redirect to \""
Chris@762 628 << location << "\" received" << std::endl;
Chris@496 629 #endif
Chris@496 630 if (location != "") {
Chris@496 631 QUrl newUrl(location);
Chris@496 632 if (newUrl != m_url) {
Chris@497 633 cleanup();
Chris@497 634 deleteCacheFile();
Chris@529 635 #ifdef DEBUG_FILE_SOURCE
Chris@529 636 decCount(m_url.toString());
Chris@529 637 incCount(newUrl.toString());
Chris@529 638 #endif
Chris@496 639 m_url = newUrl;
Chris@497 640 m_localFile = 0;
Chris@496 641 m_lastStatus = 0;
Chris@497 642 m_done = false;
Chris@497 643 m_refCounted = false;
Chris@496 644 init();
Chris@496 645 return;
Chris@496 646 }
Chris@496 647 }
Chris@496 648 }
Chris@497 649
Chris@762 650 m_lastStatus = status;
Chris@210 651 if (m_lastStatus / 100 >= 4) {
Chris@210 652 m_errorString = QString("%1 %2")
Chris@762 653 .arg(status)
Chris@762 654 .arg(m_reply->attribute
Chris@762 655 (QNetworkRequest::HttpReasonPhraseAttribute).toString());
Chris@327 656 #ifdef DEBUG_FILE_SOURCE
Chris@762 657 std::cerr << "FileSource::metadataChanged: "
Chris@762 658 << m_errorString << std::endl;
Chris@327 659 #endif
Chris@211 660 } else {
Chris@327 661 #ifdef DEBUG_FILE_SOURCE
Chris@762 662 std::cerr << "FileSource::metadataChanged: "
Chris@762 663 << m_lastStatus << std::endl;
Chris@327 664 #endif
Chris@762 665 m_contentType =
Chris@762 666 m_reply->header(QNetworkRequest::ContentTypeHeader).toString();
Chris@325 667 }
Chris@325 668 emit statusAvailable();
Chris@210 669 }
Chris@210 670
Chris@210 671 void
Chris@762 672 FileSource::downloadProgress(qint64 done, qint64 total)
Chris@208 673 {
Chris@208 674 int percent = int((double(done) / double(total)) * 100.0 - 0.1);
Chris@208 675 emit progress(percent);
Chris@210 676 }
Chris@210 677
Chris@210 678 void
Chris@317 679 FileSource::cancelled()
Chris@210 680 {
Chris@210 681 m_done = true;
Chris@316 682 cleanup();
Chris@316 683
Chris@210 684 m_ok = false;
Chris@210 685 m_errorString = tr("Download cancelled");
Chris@208 686 }
Chris@208 687
Chris@208 688 void
Chris@762 689 FileSource::replyFinished()
Chris@208 690 {
Chris@327 691 emit progress(100);
Chris@327 692
Chris@327 693 #ifdef DEBUG_FILE_SOURCE
Chris@762 694 std::cerr << "FileSource::replyFinished()" << std::endl;
Chris@327 695 #endif
Chris@211 696
Chris@211 697 if (m_done) return;
Chris@211 698
Chris@762 699 bool error = (m_lastStatus / 100 >= 4);
Chris@210 700
Chris@211 701 cleanup();
Chris@208 702
Chris@211 703 if (!error) {
Chris@208 704 QFileInfo fi(m_localFilename);
Chris@208 705 if (!fi.exists()) {
Chris@208 706 m_errorString = tr("Failed to create local file %1").arg(m_localFilename);
Chris@211 707 error = true;
Chris@208 708 } else if (fi.size() == 0) {
Chris@208 709 m_errorString = tr("File contains no data!");
Chris@211 710 error = true;
Chris@208 711 }
Chris@208 712 }
Chris@211 713
Chris@211 714 if (error) {
Chris@327 715 #ifdef DEBUG_FILE_SOURCE
Chris@469 716 std::cerr << "FileSource::done: error is " << error << ", deleting cache file" << std::endl;
Chris@327 717 #endif
Chris@316 718 deleteCacheFile();
Chris@211 719 }
Chris@211 720
Chris@211 721 m_ok = !error;
Chris@520 722 if (m_localFile) m_localFile->flush();
Chris@211 723 m_done = true;
Chris@304 724 emit ready();
Chris@211 725 }
Chris@211 726
Chris@211 727 void
Chris@763 728 FileSource::replyFailed(QNetworkReply::NetworkError)
Chris@763 729 {
Chris@763 730 emit progress(100);
Chris@763 731 m_errorString = m_reply->errorString();
Chris@763 732 m_ok = false;
Chris@763 733 m_done = true;
Chris@763 734 cleanup();
Chris@763 735 emit ready();
Chris@763 736 }
Chris@763 737
Chris@763 738 void
Chris@317 739 FileSource::deleteCacheFile()
Chris@211 740 {
Chris@327 741 #ifdef DEBUG_FILE_SOURCE
Chris@762 742 std::cerr << "FileSource::deleteCacheFile(\"" << m_localFilename << "\")" << std::endl;
Chris@327 743 #endif
Chris@211 744
Chris@211 745 cleanup();
Chris@211 746
Chris@316 747 if (m_localFilename == "") {
Chris@316 748 return;
Chris@316 749 }
Chris@211 750
Chris@316 751 if (!isRemote()) {
Chris@327 752 #ifdef DEBUG_FILE_SOURCE
Chris@316 753 std::cerr << "not a cache file" << std::endl;
Chris@327 754 #endif
Chris@316 755 return;
Chris@316 756 }
Chris@316 757
Chris@316 758 if (m_refCounted) {
Chris@304 759
Chris@304 760 QMutexLocker locker(&m_mapMutex);
Chris@316 761 m_refCounted = false;
Chris@304 762
Chris@304 763 if (m_refCountMap[m_url] > 0) {
Chris@304 764 m_refCountMap[m_url]--;
Chris@327 765 #ifdef DEBUG_FILE_SOURCE
Chris@316 766 std::cerr << "reduced ref count to " << m_refCountMap[m_url] << std::endl;
Chris@327 767 #endif
Chris@304 768 if (m_refCountMap[m_url] > 0) {
Chris@304 769 m_done = true;
Chris@304 770 return;
Chris@304 771 }
Chris@304 772 }
Chris@304 773 }
Chris@304 774
Chris@211 775 m_fileCreationMutex.lock();
Chris@211 776
Chris@211 777 if (!QFile(m_localFilename).remove()) {
Chris@469 778 #ifdef DEBUG_FILE_SOURCE
Chris@686 779 std::cerr << "FileSource::deleteCacheFile: ERROR: Failed to delete file \"" << m_localFilename << "\"" << std::endl;
Chris@469 780 #endif
Chris@211 781 } else {
Chris@327 782 #ifdef DEBUG_FILE_SOURCE
Chris@762 783 std::cerr << "FileSource::deleteCacheFile: Deleted cache file \"" << m_localFilename << "\"" << std::endl;
Chris@327 784 #endif
Chris@211 785 m_localFilename = "";
Chris@211 786 }
Chris@211 787
Chris@211 788 m_fileCreationMutex.unlock();
Chris@211 789
Chris@208 790 m_done = true;
Chris@208 791 }
Chris@208 792
Chris@316 793 bool
Chris@317 794 FileSource::createCacheFile()
Chris@208 795 {
Chris@316 796 {
Chris@316 797 QMutexLocker locker(&m_mapMutex);
Chris@316 798
Chris@327 799 #ifdef DEBUG_FILE_SOURCE
Chris@762 800 std::cerr << "FileSource::createCacheFile: refcount is " << m_refCountMap[m_url] << std::endl;
Chris@327 801 #endif
Chris@316 802
Chris@316 803 if (m_refCountMap[m_url] > 0) {
Chris@316 804 m_refCountMap[m_url]++;
Chris@316 805 m_localFilename = m_remoteLocalMap[m_url];
Chris@327 806 #ifdef DEBUG_FILE_SOURCE
Chris@316 807 std::cerr << "raised it to " << m_refCountMap[m_url] << std::endl;
Chris@327 808 #endif
Chris@316 809 m_refCounted = true;
Chris@316 810 return true;
Chris@316 811 }
Chris@316 812 }
Chris@316 813
Chris@208 814 QDir dir;
Chris@208 815 try {
Chris@208 816 dir = TempDirectory::getInstance()->getSubDirectoryPath("download");
Chris@208 817 } catch (DirectoryCreationFailed f) {
Chris@327 818 #ifdef DEBUG_FILE_SOURCE
Chris@317 819 std::cerr << "FileSource::createCacheFile: ERROR: Failed to create temporary directory: " << f.what() << std::endl;
Chris@327 820 #endif
Chris@208 821 return "";
Chris@208 822 }
Chris@208 823
Chris@316 824 QString filepart = m_url.path().section('/', -1, -1,
Chris@316 825 QString::SectionSkipEmpty);
Chris@208 826
Chris@457 827 QString extension = "";
Chris@457 828 if (filepart.contains('.')) extension = filepart.section('.', -1);
Chris@457 829
Chris@208 830 QString base = filepart;
Chris@208 831 if (extension != "") {
Chris@208 832 base = base.left(base.length() - extension.length() - 1);
Chris@208 833 }
Chris@208 834 if (base == "") base = "remote";
Chris@208 835
Chris@208 836 QString filename;
Chris@208 837
Chris@208 838 if (extension == "") {
Chris@208 839 filename = base;
Chris@208 840 } else {
Chris@208 841 filename = QString("%1.%2").arg(base).arg(extension);
Chris@208 842 }
Chris@208 843
Chris@208 844 QString filepath(dir.filePath(filename));
Chris@208 845
Chris@327 846 #ifdef DEBUG_FILE_SOURCE
Chris@706 847 std::cerr << "FileSource::createCacheFile: URL is \"" << m_url.toString() << "\", dir is \"" << dir.path() << "\", base \"" << base << "\", extension \"" << extension << "\", filebase \"" << filename << "\", filename \"" << filepath << "\"" << std::endl;
Chris@327 848 #endif
Chris@208 849
Chris@316 850 QMutexLocker fcLocker(&m_fileCreationMutex);
Chris@316 851
Chris@208 852 ++m_count;
Chris@208 853
Chris@208 854 if (QFileInfo(filepath).exists() ||
Chris@208 855 !QFile(filepath).open(QFile::WriteOnly)) {
Chris@208 856
Chris@327 857 #ifdef DEBUG_FILE_SOURCE
Chris@317 858 std::cerr << "FileSource::createCacheFile: Failed to create local file \""
Chris@686 859 << filepath << "\" for URL \""
Chris@686 860 << m_url.toString() << "\" (or file already exists): appending suffix instead" << std::endl;
Chris@327 861 #endif
Chris@208 862
Chris@208 863 if (extension == "") {
Chris@208 864 filename = QString("%1_%2").arg(base).arg(m_count);
Chris@208 865 } else {
Chris@208 866 filename = QString("%1_%2.%3").arg(base).arg(m_count).arg(extension);
Chris@208 867 }
Chris@208 868 filepath = dir.filePath(filename);
Chris@208 869
Chris@208 870 if (QFileInfo(filepath).exists() ||
Chris@208 871 !QFile(filepath).open(QFile::WriteOnly)) {
Chris@208 872
Chris@327 873 #ifdef DEBUG_FILE_SOURCE
Chris@317 874 std::cerr << "FileSource::createCacheFile: ERROR: Failed to create local file \""
Chris@686 875 << filepath << "\" for URL \""
Chris@686 876 << m_url.toString() << "\" (or file already exists)" << std::endl;
Chris@327 877 #endif
Chris@208 878
Chris@208 879 return "";
Chris@208 880 }
Chris@208 881 }
Chris@208 882
Chris@327 883 #ifdef DEBUG_FILE_SOURCE
Chris@706 884 std::cerr << "FileSource::createCacheFile: url "
Chris@686 885 << m_url.toString() << " -> local filename "
Chris@706 886 << filepath << std::endl;
Chris@327 887 #endif
Chris@316 888
Chris@316 889 m_localFilename = filepath;
Chris@208 890
Chris@316 891 return false;
Chris@208 892 }
Chris@327 893