/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qresource.h" #include "qresource_p.h" #include "qresource_iterator_p.h" #include "qset.h" #include "qmutex.h" #include "qdebug.h" #include "qlocale.h" #include "qglobal.h" #include "qvector.h" #include "qdatetime.h" #include "qbytearray.h" #include "qstringlist.h" #include "qendian.h" #include #include #include "private/qabstractfileengine_p.h" #include "private/qsystemerror_p.h" #ifdef Q_OS_UNIX # include "private/qcore_unix_p.h" #endif //#define DEBUG_RESOURCE_MATCH QT_BEGIN_NAMESPACE class QStringSplitter { public: QStringSplitter(const QString &s) : m_string(s), m_data(m_string.constData()), m_len(s.length()), m_pos(0) { m_splitChar = QLatin1Char('/'); } inline bool hasNext() { while (m_pos < m_len && m_data[m_pos] == m_splitChar) ++m_pos; return m_pos < m_len; } inline QStringRef next() { int start = m_pos; while (m_pos < m_len && m_data[m_pos] != m_splitChar) ++m_pos; return QStringRef(&m_string, start, m_pos - start); } QString m_string; const QChar *m_data; QChar m_splitChar; int m_len; int m_pos; }; //resource glue class QResourceRoot { enum Flags { Compressed = 0x01, Directory = 0x02 }; const uchar *tree, *names, *payloads; int version; inline int findOffset(int node) const { return node * (14 + (version >= 0x02 ? 8 : 0)); } //sizeof each tree element uint hash(int node) const; QString name(int node) const; short flags(int node) const; public: mutable QAtomicInt ref; inline QResourceRoot(): tree(0), names(0), payloads(0), version(0) {} inline QResourceRoot(int version, const uchar *t, const uchar *n, const uchar *d) { setSource(version, t, n, d); } virtual ~QResourceRoot() { } int findNode(const QString &path, const QLocale &locale=QLocale()) const; inline bool isContainer(int node) const { return flags(node) & Directory; } inline bool isCompressed(int node) const { return flags(node) & Compressed; } const uchar *data(int node, qint64 *size) const; QDateTime lastModified(int node) const; QStringList children(int node) const; virtual QString mappingRoot() const { return QString(); } bool mappingRootSubdir(const QString &path, QString *match=0) const; inline bool operator==(const QResourceRoot &other) const { return tree == other.tree && names == other.names && payloads == other.payloads && version == other.version; } inline bool operator!=(const QResourceRoot &other) const { return !operator==(other); } enum ResourceRootType { Resource_Builtin, Resource_File, Resource_Buffer }; virtual ResourceRootType type() const { return Resource_Builtin; } protected: inline void setSource(int v, const uchar *t, const uchar *n, const uchar *d) { tree = t; names = n; payloads = d; version = v; } }; static QString cleanPath(const QString &_path) { QString path = QDir::cleanPath(_path); // QDir::cleanPath does not remove two trailing slashes under _Windows_ // due to support for UNC paths. Remove those manually. if (path.startsWith(QLatin1String("//"))) path.remove(0, 1); return path; } Q_DECLARE_TYPEINFO(QResourceRoot, Q_MOVABLE_TYPE); typedef QList ResourceList; struct QResourceGlobalData { QMutex resourceMutex{QMutex::Recursive}; ResourceList resourceList; QStringList resourceSearchPaths; }; Q_GLOBAL_STATIC(QResourceGlobalData, resourceGlobalData) static inline QMutex *resourceMutex() { return &resourceGlobalData->resourceMutex; } static inline ResourceList *resourceList() { return &resourceGlobalData->resourceList; } static inline QStringList *resourceSearchPaths() { return &resourceGlobalData->resourceSearchPaths; } /*! \class QResource \inmodule QtCore \brief The QResource class provides an interface for reading directly from resources. \ingroup io \reentrant \since 4.2 QResource is an object that represents a set of data (and possibly children) relating to a single resource entity. QResource gives direct access to the bytes in their raw format. In this way direct access allows reading data without buffer copying or indirection. Indirection is often useful when interacting with the resource entity as if it is a file, this can be achieved with QFile. The data and children behind a QResource are normally compiled into an application/library, but it is also possible to load a resource at runtime. When loaded at run time the resource file will be loaded as one big set of data and then given out in pieces via references into the resource tree. A QResource can either be loaded with an absolute path, either treated as a file system rooted with a \c{/} character, or in resource notation rooted with a \c{:} character. A relative resource can also be opened which will be found in the list of paths returned by QDir::searchPaths(). A QResource that is representing a file will have data backing it, this data can possibly be compressed, in which case qUncompress() must be used to access the real data; this happens implicitly when accessed through a QFile. A QResource that is representing a directory will have only children and no data. \section1 Dynamic Resource Loading A resource can be left out of an application's binary and loaded when it is needed at run-time by using the registerResource() function. The resource file passed into registerResource() must be a binary resource as created by rcc. Further information about binary resources can be found in \l{The Qt Resource System} documentation. This can often be useful when loading a large set of application icons that may change based on a setting, or that can be edited by a user and later recreated. The resource is immediately loaded into memory, either as a result of a single file read operation, or as a memory mapped file. This approach can prove to be a significant performance gain as only a single file will be loaded, and pieces of data will be given out via the path requested in setFileName(). The unregisterResource() function removes a reference to a particular file. If there are QResource objects that currently reference resources related to the unregistered file, they will continue to be valid but the resource file itself will be removed from the resource roots, and thus no further QResource can be created pointing into this resource data. The resource itself will be unmapped from memory when the last QResource that points to it is destroyed. \sa {The Qt Resource System}, QFile, QDir, QFileInfo */ class QResourcePrivate { public: inline QResourcePrivate(QResource *_q) : q_ptr(_q) { clear(); } inline ~QResourcePrivate() { clear(); } void ensureInitialized() const; void ensureChildren() const; bool load(const QString &file); void clear(); QLocale locale; QString fileName, absoluteFilePath; QList related; uint container : 1; mutable uint compressed : 1; mutable qint64 size; mutable const uchar *data; mutable QStringList children; mutable QDateTime lastModified; QResource *q_ptr; Q_DECLARE_PUBLIC(QResource) }; void QResourcePrivate::clear() { absoluteFilePath.clear(); compressed = 0; data = 0; size = 0; children.clear(); lastModified = QDateTime(); container = 0; for(int i = 0; i < related.size(); ++i) { QResourceRoot *root = related.at(i); if(!root->ref.deref()) delete root; } related.clear(); } bool QResourcePrivate::load(const QString &file) { related.clear(); QMutexLocker lock(resourceMutex()); const ResourceList *list = resourceList(); QString cleaned = cleanPath(file); for(int i = 0; i < list->size(); ++i) { QResourceRoot *res = list->at(i); const int node = res->findNode(cleaned, locale); if(node != -1) { if(related.isEmpty()) { container = res->isContainer(node); if(!container) { data = res->data(node, &size); compressed = res->isCompressed(node); } else { data = 0; size = 0; compressed = 0; } lastModified = res->lastModified(node); } else if(res->isContainer(node) != container) { qWarning("QResourceInfo: Resource [%s] has both data and children!", file.toLatin1().constData()); } res->ref.ref(); related.append(res); } else if(res->mappingRootSubdir(file)) { container = true; data = 0; size = 0; compressed = 0; lastModified = QDateTime(); res->ref.ref(); related.append(res); } } return !related.isEmpty(); } void QResourcePrivate::ensureInitialized() const { if(!related.isEmpty()) return; QResourcePrivate *that = const_cast(this); if(fileName == QLatin1String(":")) that->fileName += QLatin1Char('/'); that->absoluteFilePath = fileName; if(!that->absoluteFilePath.startsWith(QLatin1Char(':'))) that->absoluteFilePath.prepend(QLatin1Char(':')); QStringRef path(&fileName); if(path.startsWith(QLatin1Char(':'))) path = path.mid(1); if(path.startsWith(QLatin1Char('/'))) { that->load(path.toString()); } else { QMutexLocker lock(resourceMutex()); QStringList searchPaths = *resourceSearchPaths(); searchPaths << QLatin1String(""); for(int i = 0; i < searchPaths.size(); ++i) { const QString searchPath(searchPaths.at(i) + QLatin1Char('/') + path); if(that->load(searchPath)) { that->absoluteFilePath = QLatin1Char(':') + searchPath; break; } } } } void QResourcePrivate::ensureChildren() const { ensureInitialized(); if(!children.isEmpty() || !container || related.isEmpty()) return; QString path = absoluteFilePath, k; if(path.startsWith(QLatin1Char(':'))) path = path.mid(1); QSet kids; QString cleaned = cleanPath(path); for(int i = 0; i < related.size(); ++i) { QResourceRoot *res = related.at(i); if(res->mappingRootSubdir(path, &k) && !k.isEmpty()) { if(!kids.contains(k)) { children += k; kids.insert(k); } } else { const int node = res->findNode(cleaned); if(node != -1) { QStringList related_children = res->children(node); for(int kid = 0; kid < related_children.size(); ++kid) { k = related_children.at(kid); if(!kids.contains(k)) { children += k; kids.insert(k); } } } } } } /*! Constructs a QResource pointing to \a file. \a locale is used to load a specific localization of a resource data. \sa QFileInfo, QDir::searchPaths(), setFileName(), setLocale() */ QResource::QResource(const QString &file, const QLocale &locale) : d_ptr(new QResourcePrivate(this)) { Q_D(QResource); d->fileName = file; d->locale = locale; } /*! Releases the resources of the QResource object. */ QResource::~QResource() { } /*! Sets a QResource to only load the localization of resource to for \a locale. If a resource for the specific locale is not found then the C locale is used. \sa setFileName() */ void QResource::setLocale(const QLocale &locale) { Q_D(QResource); d->clear(); d->locale = locale; } /*! Returns the locale used to locate the data for the QResource. */ QLocale QResource::locale() const { Q_D(const QResource); return d->locale; } /*! Sets a QResource to point to \a file. \a file can either be absolute, in which case it is opened directly, if relative then the file will be tried to be found in QDir::searchPaths(). \sa absoluteFilePath() */ void QResource::setFileName(const QString &file) { Q_D(QResource); d->clear(); d->fileName = file; } /*! Returns the full path to the file that this QResource represents as it was passed. \sa absoluteFilePath() */ QString QResource::fileName() const { Q_D(const QResource); d->ensureInitialized(); return d->fileName; } /*! Returns the real path that this QResource represents, if the resource was found via the QDir::searchPaths() it will be indicated in the path. \sa fileName() */ QString QResource::absoluteFilePath() const { Q_D(const QResource); d->ensureInitialized(); return d->absoluteFilePath; } /*! Returns \c true if the resource really exists in the resource hierarchy, false otherwise. */ bool QResource::isValid() const { Q_D(const QResource); d->ensureInitialized(); return !d->related.isEmpty(); } /*! \fn bool QResource::isFile() const Returns \c true if the resource represents a file and thus has data backing it, false if it represents a directory. \sa isDir() */ /*! Returns \c true if the resource represents a file and the data backing it is in a compressed format, false otherwise. \sa data(), isFile() */ bool QResource::isCompressed() const { Q_D(const QResource); d->ensureInitialized(); return d->compressed; } /*! Returns the size of the data backing the resource. \sa data(), isFile() */ qint64 QResource::size() const { Q_D(const QResource); d->ensureInitialized(); return d->size; } /*! Returns direct access to a read only segment of data that this resource represents. If the resource is compressed the data returns is compressed and qUncompress() must be used to access the data. If the resource is a directory 0 is returned. \sa size(), isCompressed(), isFile() */ const uchar *QResource::data() const { Q_D(const QResource); d->ensureInitialized(); return d->data; } /*! Returns the date and time when the file was last modified before packaging into a resource. */ QDateTime QResource::lastModified() const { Q_D(const QResource); d->ensureInitialized(); return d->lastModified; } /*! Returns \c true if the resource represents a directory and thus may have children() in it, false if it represents a file. \sa isFile() */ bool QResource::isDir() const { Q_D(const QResource); d->ensureInitialized(); return d->container; } /*! Returns a list of all resources in this directory, if the resource represents a file the list will be empty. \sa isDir() */ QStringList QResource::children() const { Q_D(const QResource); d->ensureChildren(); return d->children; } /*! \obsolete Use QDir::addSearchPath() with a prefix instead. Adds \a path to the search paths searched in to find resources that are not specified with an absolute path. The \a path must be an absolute path (start with \c{/}). The default search path is to search only in the root (\c{:/}). The last path added will be consulted first upon next QResource creation. */ void QResource::addSearchPath(const QString &path) { if (!path.startsWith(QLatin1Char('/'))) { qWarning("QResource::addResourceSearchPath: Search paths must be absolute (start with /) [%s]", path.toLocal8Bit().data()); return; } QMutexLocker lock(resourceMutex()); resourceSearchPaths()->prepend(path); } /*! \obsolete Use QDir::searchPaths() instead. Returns the current search path list. This list is consulted when creating a relative resource. \sa QDir::addSearchPath(), QDir::setSearchPaths() */ QStringList QResource::searchPaths() { QMutexLocker lock(resourceMutex()); return *resourceSearchPaths(); } inline uint QResourceRoot::hash(int node) const { if(!node) //root return 0; const int offset = findOffset(node); qint32 name_offset = qFromBigEndian(tree + offset); name_offset += 2; //jump past name length return qFromBigEndian(names + name_offset); } inline QString QResourceRoot::name(int node) const { if(!node) // root return QString(); const int offset = findOffset(node); QString ret; qint32 name_offset = qFromBigEndian(tree + offset); const qint16 name_length = qFromBigEndian(names + name_offset); name_offset += 2; name_offset += 4; //jump past hash ret.resize(name_length); QChar *strData = ret.data(); for(int i = 0; i < name_length*2; i+=2) { QChar c(names[name_offset+i+1], names[name_offset+i]); *strData = c; ++strData; } return ret; } int QResourceRoot::findNode(const QString &_path, const QLocale &locale) const { QString path = _path; { QString root = mappingRoot(); if(!root.isEmpty()) { if(root == path) { path = QLatin1Char('/'); } else { if(!root.endsWith(QLatin1Char('/'))) root += QLatin1Char('/'); if(path.size() >= root.size() && path.startsWith(root)) path = path.mid(root.length()-1); if(path.isEmpty()) path = QLatin1Char('/'); } } } #ifdef DEBUG_RESOURCE_MATCH qDebug() << "!!!!" << "START" << path << locale.country() << locale.language(); #endif if(path == QLatin1String("/")) return 0; //the root node is always first qint32 child_count = qFromBigEndian(tree + 6); qint32 child = qFromBigEndian(tree + 10); //now iterate up the tree int node = -1; QStringSplitter splitter(path); while (child_count && splitter.hasNext()) { QStringRef segment = splitter.next(); #ifdef DEBUG_RESOURCE_MATCH qDebug() << " CHILDREN" << segment; for(int j = 0; j < child_count; ++j) { qDebug() << " " << child+j << " :: " << name(child+j); } #endif const uint h = qt_hash(segment); //do the binary search for the hash int l = 0, r = child_count-1; int sub_node = (l+r+1)/2; while(r != l) { const uint sub_node_hash = hash(child+sub_node); if(h == sub_node_hash) break; else if(h < sub_node_hash) r = sub_node - 1; else l = sub_node; sub_node = (l + r + 1) / 2; } sub_node += child; //now do the "harder" compares bool found = false; if(hash(sub_node) == h) { while(sub_node > child && hash(sub_node-1) == h) //backup for collisions --sub_node; for(; sub_node < child+child_count && hash(sub_node) == h; ++sub_node) { //here we go... if(name(sub_node) == segment) { found = true; int offset = findOffset(sub_node); #ifdef DEBUG_RESOURCE_MATCH qDebug() << " TRY" << sub_node << name(sub_node) << offset; #endif offset += 4; //jump past name const qint16 flags = qFromBigEndian(tree + offset); offset += 2; if(!splitter.hasNext()) { if(!(flags & Directory)) { const qint16 country = qFromBigEndian(tree + offset); offset += 2; const qint16 language = qFromBigEndian(tree + offset); offset += 2; #ifdef DEBUG_RESOURCE_MATCH qDebug() << " " << "LOCALE" << country << language; #endif if(country == locale.country() && language == locale.language()) { #ifdef DEBUG_RESOURCE_MATCH qDebug() << "!!!!" << "FINISHED" << __LINE__ << sub_node; #endif return sub_node; } else if((country == QLocale::AnyCountry && language == locale.language()) || (country == QLocale::AnyCountry && language == QLocale::C && node == -1)) { node = sub_node; } continue; } else { #ifdef DEBUG_RESOURCE_MATCH qDebug() << "!!!!" << "FINISHED" << __LINE__ << sub_node; #endif return sub_node; } } if(!(flags & Directory)) return -1; child_count = qFromBigEndian(tree + offset); offset += 4; child = qFromBigEndian(tree + offset); break; } } } if(!found) break; } #ifdef DEBUG_RESOURCE_MATCH qDebug() << "!!!!" << "FINISHED" << __LINE__ << node; #endif return node; } short QResourceRoot::flags(int node) const { if(node == -1) return 0; const int offset = findOffset(node) + 4; //jump past name return qFromBigEndian(tree + offset); } const uchar *QResourceRoot::data(int node, qint64 *size) const { if(node == -1) { *size = 0; return 0; } int offset = findOffset(node) + 4; //jump past name const qint16 flags = qFromBigEndian(tree + offset); offset += 2; offset += 4; //jump past locale if(!(flags & Directory)) { const qint32 data_offset = qFromBigEndian(tree + offset); const quint32 data_length = qFromBigEndian(payloads + data_offset); const uchar *ret = payloads+data_offset+4; *size = data_length; return ret; } *size = 0; return 0; } QDateTime QResourceRoot::lastModified(int node) const { if (node == -1 || version < 0x02) return QDateTime(); const int offset = findOffset(node) + 14; const quint64 timeStamp = qFromBigEndian(tree + offset); if (timeStamp == 0) return QDateTime(); return QDateTime::fromMSecsSinceEpoch(timeStamp); } QStringList QResourceRoot::children(int node) const { if(node == -1) return QStringList(); int offset = findOffset(node) + 4; //jump past name const qint16 flags = qFromBigEndian(tree + offset); offset += 2; QStringList ret; if(flags & Directory) { const qint32 child_count = qFromBigEndian(tree + offset); offset += 4; const qint32 child_off = qFromBigEndian(tree + offset); ret.reserve(child_count); for(int i = child_off; i < child_off+child_count; ++i) ret << name(i); } return ret; } bool QResourceRoot::mappingRootSubdir(const QString &path, QString *match) const { const QString root = mappingRoot(); if(!root.isEmpty()) { const QVector root_segments = root.splitRef(QLatin1Char('/'), QString::SkipEmptyParts), path_segments = path.splitRef(QLatin1Char('/'), QString::SkipEmptyParts); if(path_segments.size() <= root_segments.size()) { int matched = 0; for(int i = 0; i < path_segments.size(); ++i) { if(root_segments[i] != path_segments[i]) break; ++matched; } if(matched == path_segments.size()) { if(match && root_segments.size() > matched) *match = root_segments.at(matched).toString(); return true; } } } return false; } Q_CORE_EXPORT bool qRegisterResourceData(int version, const unsigned char *tree, const unsigned char *name, const unsigned char *data) { QMutexLocker lock(resourceMutex()); if ((version == 0x01 || version == 0x2) && resourceList()) { bool found = false; QResourceRoot res(version, tree, name, data); for(int i = 0; i < resourceList()->size(); ++i) { if(*resourceList()->at(i) == res) { found = true; break; } } if(!found) { QResourceRoot *root = new QResourceRoot(version, tree, name, data); root->ref.ref(); resourceList()->append(root); } return true; } return false; } Q_CORE_EXPORT bool qUnregisterResourceData(int version, const unsigned char *tree, const unsigned char *name, const unsigned char *data) { if (resourceGlobalData.isDestroyed()) return false; QMutexLocker lock(resourceMutex()); if ((version == 0x01 || version == 0x02) && resourceList()) { QResourceRoot res(version, tree, name, data); for(int i = 0; i < resourceList()->size(); ) { if(*resourceList()->at(i) == res) { QResourceRoot *root = resourceList()->takeAt(i); if(!root->ref.deref()) delete root; } else { ++i; } } return true; } return false; } //run time resource creation class QDynamicBufferResourceRoot: public QResourceRoot { QString root; const uchar *buffer; public: inline QDynamicBufferResourceRoot(const QString &_root) : root(_root), buffer(0) { } inline ~QDynamicBufferResourceRoot() { } inline const uchar *mappingBuffer() const { return buffer; } virtual QString mappingRoot() const Q_DECL_OVERRIDE { return root; } virtual ResourceRootType type() const Q_DECL_OVERRIDE { return Resource_Buffer; } // size == -1 means "unknown" bool registerSelf(const uchar *b, int size) { // 5 int "pointers" if (size >= 0 && size < 20) return false; //setup the data now int offset = 0; //magic number if(b[offset+0] != 'q' || b[offset+1] != 'r' || b[offset+2] != 'e' || b[offset+3] != 's') { return false; } offset += 4; const int version = qFromBigEndian(b + offset); offset += 4; const int tree_offset = qFromBigEndian(b + offset); offset += 4; const int data_offset = qFromBigEndian(b + offset); offset += 4; const int name_offset = qFromBigEndian(b + offset); offset += 4; // Some sanity checking for sizes. This is _not_ a security measure. if (size >= 0 && (tree_offset >= size || data_offset >= size || name_offset >= size)) return false; if (version == 0x01 || version == 0x02) { buffer = b; setSource(version, b+tree_offset, b+name_offset, b+data_offset); return true; } return false; } }; #if defined(Q_OS_UNIX) && !defined (Q_OS_NACL) && !defined(Q_OS_INTEGRITY) #define QT_USE_MMAP #endif // most of the headers below are already included in qplatformdefs.h // also this lacks Large File support but that's probably irrelevant #if defined(QT_USE_MMAP) // for mmap QT_BEGIN_INCLUDE_NAMESPACE #include #include QT_END_INCLUDE_NAMESPACE #endif class QDynamicFileResourceRoot: public QDynamicBufferResourceRoot { QString fileName; // for mmap'ed files, this is what needs to be unmapped. uchar *unmapPointer; unsigned int unmapLength; public: inline QDynamicFileResourceRoot(const QString &_root) : QDynamicBufferResourceRoot(_root), unmapPointer(0), unmapLength(0) { } ~QDynamicFileResourceRoot() { #if defined(QT_USE_MMAP) if (unmapPointer) { munmap((char*)unmapPointer, unmapLength); unmapPointer = 0; unmapLength = 0; } else #endif { delete [] mappingBuffer(); } } QString mappingFile() const { return fileName; } virtual ResourceRootType type() const Q_DECL_OVERRIDE { return Resource_File; } bool registerSelf(const QString &f) { bool fromMM = false; uchar *data = 0; unsigned int data_len = 0; #ifdef QT_USE_MMAP #ifndef MAP_FILE #define MAP_FILE 0 #endif #ifndef MAP_FAILED #define MAP_FAILED -1 #endif int fd = QT_OPEN(QFile::encodeName(f), O_RDONLY, #if defined(Q_OS_WIN) _S_IREAD | _S_IWRITE #else 0666 #endif ); if (fd >= 0) { QT_STATBUF st; if (!QT_FSTAT(fd, &st)) { uchar *ptr; ptr = reinterpret_cast( mmap(0, st.st_size, // any address, whole file PROT_READ, // read-only memory MAP_FILE | MAP_PRIVATE, // swap-backed map from file fd, 0)); // from offset 0 of fd if (ptr && ptr != reinterpret_cast(MAP_FAILED)) { data = ptr; data_len = st.st_size; fromMM = true; } } ::close(fd); } #endif // QT_USE_MMAP if(!data) { QFile file(f); if (!file.exists()) return false; data_len = file.size(); data = new uchar[data_len]; bool ok = false; if (file.open(QIODevice::ReadOnly)) ok = (data_len == (uint)file.read((char*)data, data_len)); if (!ok) { delete [] data; data = 0; data_len = 0; return false; } fromMM = false; } if (data && QDynamicBufferResourceRoot::registerSelf(data, data_len)) { if(fromMM) { unmapPointer = data; unmapLength = data_len; } fileName = f; return true; } return false; } }; static QString qt_resource_fixResourceRoot(QString r) { if(!r.isEmpty()) { if(r.startsWith(QLatin1Char(':'))) r = r.mid(1); if(!r.isEmpty()) r = QDir::cleanPath(r); } return r; } /*! \fn bool QResource::registerResource(const QString &rccFileName, const QString &mapRoot) Registers the resource with the given \a rccFileName at the location in the resource tree specified by \a mapRoot, and returns \c true if the file is successfully opened; otherwise returns \c false. \sa unregisterResource() */ bool QResource::registerResource(const QString &rccFilename, const QString &resourceRoot) { QString r = qt_resource_fixResourceRoot(resourceRoot); if(!r.isEmpty() && r[0] != QLatin1Char('/')) { qWarning("QDir::registerResource: Registering a resource [%s] must be rooted in an absolute path (start with /) [%s]", rccFilename.toLocal8Bit().data(), resourceRoot.toLocal8Bit().data()); return false; } QDynamicFileResourceRoot *root = new QDynamicFileResourceRoot(r); if(root->registerSelf(rccFilename)) { root->ref.ref(); QMutexLocker lock(resourceMutex()); resourceList()->append(root); return true; } delete root; return false; } /*! \fn bool QResource::unregisterResource(const QString &rccFileName, const QString &mapRoot) Unregisters the resource with the given \a rccFileName at the location in the resource tree specified by \a mapRoot, and returns \c true if the resource is successfully unloaded and no references exist for the resource; otherwise returns \c false. \sa registerResource() */ bool QResource::unregisterResource(const QString &rccFilename, const QString &resourceRoot) { QString r = qt_resource_fixResourceRoot(resourceRoot); QMutexLocker lock(resourceMutex()); ResourceList *list = resourceList(); for(int i = 0; i < list->size(); ++i) { QResourceRoot *res = list->at(i); if(res->type() == QResourceRoot::Resource_File) { QDynamicFileResourceRoot *root = reinterpret_cast(res); if (root->mappingFile() == rccFilename && root->mappingRoot() == r) { resourceList()->removeAt(i); if(!root->ref.deref()) { delete root; return true; } return false; } } } return false; } /*! \fn bool QResource::registerResource(const uchar *rccData, const QString &mapRoot) \since 4.3 Registers the resource with the given \a rccData at the location in the resource tree specified by \a mapRoot, and returns \c true if the file is successfully opened; otherwise returns \c false. \warning The data must remain valid throughout the life of any QFile that may reference the resource data. \sa unregisterResource() */ bool QResource::registerResource(const uchar *rccData, const QString &resourceRoot) { QString r = qt_resource_fixResourceRoot(resourceRoot); if(!r.isEmpty() && r[0] != QLatin1Char('/')) { qWarning("QDir::registerResource: Registering a resource [%p] must be rooted in an absolute path (start with /) [%s]", rccData, resourceRoot.toLocal8Bit().data()); return false; } QDynamicBufferResourceRoot *root = new QDynamicBufferResourceRoot(r); if (root->registerSelf(rccData, -1)) { root->ref.ref(); QMutexLocker lock(resourceMutex()); resourceList()->append(root); return true; } delete root; return false; } /*! \fn bool QResource::unregisterResource(const uchar *rccData, const QString &mapRoot) \since 4.3 Unregisters the resource with the given \a rccData at the location in the resource tree specified by \a mapRoot, and returns \c true if the resource is successfully unloaded and no references exist into the resource; otherwise returns \c false. \sa registerResource() */ bool QResource::unregisterResource(const uchar *rccData, const QString &resourceRoot) { QString r = qt_resource_fixResourceRoot(resourceRoot); QMutexLocker lock(resourceMutex()); ResourceList *list = resourceList(); for(int i = 0; i < list->size(); ++i) { QResourceRoot *res = list->at(i); if(res->type() == QResourceRoot::Resource_Buffer) { QDynamicBufferResourceRoot *root = reinterpret_cast(res); if (root->mappingBuffer() == rccData && root->mappingRoot() == r) { resourceList()->removeAt(i); if(!root->ref.deref()) { delete root; return true; } return false; } } } return false; } #if !defined(QT_BOOTSTRAPPED) //resource engine class QResourceFileEnginePrivate : public QAbstractFileEnginePrivate { protected: Q_DECLARE_PUBLIC(QResourceFileEngine) private: uchar *map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags); bool unmap(uchar *ptr); void uncompress() const; qint64 offset; QResource resource; mutable QByteArray uncompressed; protected: QResourceFileEnginePrivate() : offset(0) { } }; bool QResourceFileEngine::mkdir(const QString &, bool) const { return false; } bool QResourceFileEngine::rmdir(const QString &, bool) const { return false; } bool QResourceFileEngine::setSize(qint64) { return false; } QStringList QResourceFileEngine::entryList(QDir::Filters filters, const QStringList &filterNames) const { return QAbstractFileEngine::entryList(filters, filterNames); } bool QResourceFileEngine::caseSensitive() const { return true; } QResourceFileEngine::QResourceFileEngine(const QString &file) : QAbstractFileEngine(*new QResourceFileEnginePrivate) { Q_D(QResourceFileEngine); d->resource.setFileName(file); } QResourceFileEngine::~QResourceFileEngine() { } void QResourceFileEngine::setFileName(const QString &file) { Q_D(QResourceFileEngine); d->resource.setFileName(file); } bool QResourceFileEngine::open(QIODevice::OpenMode flags) { Q_D(QResourceFileEngine); if (d->resource.fileName().isEmpty()) { qWarning("QResourceFileEngine::open: Missing file name"); return false; } if(flags & QIODevice::WriteOnly) return false; d->uncompress(); if (!d->resource.isValid()) { d->errorString = QSystemError::stdString(ENOENT); return false; } return true; } bool QResourceFileEngine::close() { Q_D(QResourceFileEngine); d->offset = 0; d->uncompressed.clear(); return true; } bool QResourceFileEngine::flush() { return true; } qint64 QResourceFileEngine::read(char *data, qint64 len) { Q_D(QResourceFileEngine); if(len > size()-d->offset) len = size()-d->offset; if(len <= 0) return 0; if(d->resource.isCompressed()) memcpy(data, d->uncompressed.constData()+d->offset, len); else memcpy(data, d->resource.data()+d->offset, len); d->offset += len; return len; } qint64 QResourceFileEngine::write(const char *, qint64) { return -1; } bool QResourceFileEngine::remove() { return false; } bool QResourceFileEngine::copy(const QString &) { return false; } bool QResourceFileEngine::rename(const QString &) { return false; } bool QResourceFileEngine::link(const QString &) { return false; } qint64 QResourceFileEngine::size() const { Q_D(const QResourceFileEngine); if(!d->resource.isValid()) return 0; if (d->resource.isCompressed()) { d->uncompress(); return d->uncompressed.size(); } return d->resource.size(); } qint64 QResourceFileEngine::pos() const { Q_D(const QResourceFileEngine); return d->offset; } bool QResourceFileEngine::atEnd() const { Q_D(const QResourceFileEngine); if(!d->resource.isValid()) return true; return d->offset == size(); } bool QResourceFileEngine::seek(qint64 pos) { Q_D(QResourceFileEngine); if(!d->resource.isValid()) return false; if(d->offset > size()) return false; d->offset = pos; return true; } bool QResourceFileEngine::isSequential() const { return false; } QAbstractFileEngine::FileFlags QResourceFileEngine::fileFlags(QAbstractFileEngine::FileFlags type) const { Q_D(const QResourceFileEngine); QAbstractFileEngine::FileFlags ret = 0; if(!d->resource.isValid()) return ret; if(type & PermsMask) ret |= QAbstractFileEngine::FileFlags(ReadOwnerPerm|ReadUserPerm|ReadGroupPerm|ReadOtherPerm); if(type & TypesMask) { if(d->resource.isDir()) ret |= DirectoryType; else ret |= FileType; } if(type & FlagsMask) { ret |= ExistsFlag; if(d->resource.absoluteFilePath() == QLatin1String(":/")) ret |= RootFlag; } return ret; } bool QResourceFileEngine::setPermissions(uint) { return false; } QString QResourceFileEngine::fileName(FileName file) const { Q_D(const QResourceFileEngine); if(file == BaseName) { int slash = d->resource.fileName().lastIndexOf(QLatin1Char('/')); if (slash == -1) return d->resource.fileName(); return d->resource.fileName().mid(slash + 1); } else if(file == PathName || file == AbsolutePathName) { const QString path = (file == AbsolutePathName) ? d->resource.absoluteFilePath() : d->resource.fileName(); const int slash = path.lastIndexOf(QLatin1Char('/')); if (slash == -1) return QLatin1String(":"); else if (slash <= 1) return QLatin1String(":/"); return path.left(slash); } else if(file == CanonicalName || file == CanonicalPathName) { const QString absoluteFilePath = d->resource.absoluteFilePath(); if(file == CanonicalPathName) { const int slash = absoluteFilePath.lastIndexOf(QLatin1Char('/')); if (slash != -1) return absoluteFilePath.left(slash); } return absoluteFilePath; } return d->resource.fileName(); } bool QResourceFileEngine::isRelativePath() const { return false; } uint QResourceFileEngine::ownerId(FileOwner) const { static const uint nobodyID = (uint) -2; return nobodyID; } QString QResourceFileEngine::owner(FileOwner) const { return QString(); } QDateTime QResourceFileEngine::fileTime(FileTime time) const { Q_D(const QResourceFileEngine); if (time == ModificationTime) return d->resource.lastModified(); return QDateTime(); } /*! \internal */ QAbstractFileEngine::Iterator *QResourceFileEngine::beginEntryList(QDir::Filters filters, const QStringList &filterNames) { return new QResourceFileEngineIterator(filters, filterNames); } /*! \internal */ QAbstractFileEngine::Iterator *QResourceFileEngine::endEntryList() { return 0; } bool QResourceFileEngine::extension(Extension extension, const ExtensionOption *option, ExtensionReturn *output) { Q_D(QResourceFileEngine); if (extension == MapExtension) { const MapExtensionOption *options = (const MapExtensionOption*)(option); MapExtensionReturn *returnValue = static_cast(output); returnValue->address = d->map(options->offset, options->size, options->flags); return (returnValue->address != 0); } if (extension == UnMapExtension) { const UnMapExtensionOption *options = (const UnMapExtensionOption*)option; return d->unmap(options->address); } return false; } bool QResourceFileEngine::supportsExtension(Extension extension) const { return (extension == UnMapExtension || extension == MapExtension); } uchar *QResourceFileEnginePrivate::map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags) { Q_Q(QResourceFileEngine); Q_UNUSED(flags); if (offset < 0 || size <= 0 || !resource.isValid() || offset + size > resource.size()) { q->setError(QFile::UnspecifiedError, QString()); return 0; } uchar *address = const_cast(resource.data()); return (address + offset); } bool QResourceFileEnginePrivate::unmap(uchar *ptr) { Q_UNUSED(ptr); return true; } void QResourceFileEnginePrivate::uncompress() const { if (resource.isCompressed() && uncompressed.isEmpty() && resource.size()) { #ifndef QT_NO_COMPRESS uncompressed = qUncompress(resource.data(), resource.size()); #else Q_ASSERT(!"QResourceFileEngine::open: Qt built without support for compression"); #endif } } #endif // !defined(QT_BOOTSTRAPPED) QT_END_NAMESPACE