QGIS API Documentation 3.41.0-Master (3440c17df1d)
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qgsarchive.cpp
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1/***************************************************************************
2 qgsarchive.cpp
3 ----------------
4
5 begin : July 07, 2017
6 copyright : (C) 2017 by Paul Blottiere
8 ***************************************************************************/
9
10/***************************************************************************
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 ***************************************************************************/
18
19#include "qgsarchive.h"
20#include "qgsziputils.h"
21#include "qgsmessagelog.h"
22#include "qgsauxiliarystorage.h"
23
24
25#ifdef Q_OS_WIN
26#include <windows.h>
27#endif
28
29#include <QStandardPaths>
30#include <QUuid>
31
33 : mDir( new QTemporaryDir() )
34{
35}
36
38 : mFiles( other.mFiles )
39 , mDir( new QTemporaryDir() )
40{
41}
42
44{
45 if ( this != &other )
46 {
47 mFiles = other.mFiles;
48 mDir.reset( new QTemporaryDir() );
49 }
50
51 return *this;
52}
53
54QString QgsArchive::dir() const
55{
56 return mDir->path();
57}
58
60{
61 mDir.reset( new QTemporaryDir() );
62 mFiles.clear();
63}
64
65bool QgsArchive::zip( const QString &filename )
66{
67 const QString tempPath = QStandardPaths::standardLocations( QStandardPaths::TempLocation ).at( 0 );
68 const QString uuid = QUuid::createUuid().toString();
69 QFile tmpFile( tempPath + QDir::separator() + uuid );
70
71 // zip content
72 if ( ! QgsZipUtils::zip( tmpFile.fileName(), mFiles ) )
73 {
74 const QString err = QObject::tr( "Unable to zip content" );
75 QgsMessageLog::logMessage( err, QStringLiteral( "QgsArchive" ) );
76 return false;
77 }
78
79 // remove existing zip file
80 if ( QFile::exists( filename ) )
81 QFile::remove( filename );
82
83#ifdef Q_OS_WIN
84 // Clear temporary flag (see GH #32118)
85 DWORD dwAttrs;
86#ifdef UNICODE
87 dwAttrs = GetFileAttributes( qUtf16Printable( tmpFile.fileName() ) );
88 SetFileAttributes( qUtf16Printable( tmpFile.fileName() ), dwAttrs & ~ FILE_ATTRIBUTE_TEMPORARY );
89#else
90 dwAttrs = GetFileAttributes( tmpFile.fileName().toLocal8Bit( ).data( ) );
91 SetFileAttributes( tmpFile.fileName().toLocal8Bit( ).data( ), dwAttrs & ~ FILE_ATTRIBUTE_TEMPORARY );
92#endif
93
94#endif // Q_OS_WIN
95
96 // save zip archive
97 if ( ! tmpFile.rename( filename ) )
98 {
99 const QString err = QObject::tr( "Unable to save zip file '%1'" ).arg( filename );
100 QgsMessageLog::logMessage( err, QStringLiteral( "QgsArchive" ) );
101 return false;
102 }
103
104 return true;
105}
106
107bool QgsArchive::unzip( const QString &filename )
108{
109 clear();
110 return QgsZipUtils::unzip( filename, mDir->path(), mFiles );
111}
112
113void QgsArchive::addFile( const QString &file )
114{
115 mFiles.append( file );
116}
117
118bool QgsArchive::removeFile( const QString &file )
119{
120 bool rc = false;
121
122 if ( !file.isEmpty() && mFiles.contains( file ) && QFile::exists( file ) )
123 rc = QFile::remove( file );
124
125 mFiles.removeOne( file );
126
127 return rc;
128}
129
130QStringList QgsArchive::files() const
131{
132 return mFiles;
133}
134
136{
137 return QFileInfo::exists( mDir->path() );
138}
139
141{
142 const auto constFiles = files();
143 for ( const QString &file : constFiles )
144 {
145 const QFileInfo fileInfo( file );
146 if ( fileInfo.suffix().compare( QLatin1String( "qgs" ), Qt::CaseInsensitive ) == 0 )
147 return file;
148 }
149
150 return QString();
151}
152
153bool QgsProjectArchive::unzip( const QString &filename )
154{
155 if ( QgsArchive::unzip( filename ) )
156 return ! projectFile().isEmpty();
157 else
158 return false;
159}
160
165
167{
168 const QString extension = QgsAuxiliaryStorage::extension();
169
170 const QStringList fileList = files();
171 for ( const QString &file : fileList )
172 {
173 const QFileInfo fileInfo( file );
174 if ( fileInfo.suffix().compare( extension, Qt::CaseInsensitive ) == 0 )
175 return file;
176 }
177
178 return QString();
179}
Class allowing to manage the zip/unzip actions.
Definition qgsarchive.h:35
QgsArchive & operator=(const QgsArchive &other)
virtual bool unzip(const QString &zipFilename)
Clear the current content of this archive and unzip.
bool zip(const QString &zipFilename)
Zip the content of this archive.
void clear()
Clear the current content of this archive and create a new temporary directory.
bool exists() const
Returns true if the archive exists on the filesystem, false otherwise.
void addFile(const QString &filename)
Add a new file to this archive.
bool removeFile(const QString &filename)
Remove a file from this archive and from the filesystem.
QString dir() const
Returns the current temporary directory.
QStringList files() const
Returns the list of files within this archive.
static QString extension()
Returns the extension used for auxiliary databases.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
QString projectFile() const
Returns the current .qgs project file or an empty string if there's none.
QString auxiliaryStorageFile() const
Returns the current .qgd auxiliary storage file or an empty string if there's none.
bool clearProjectFile()
Remove the current .qgs project file from the temporary directory.
bool unzip(const QString &zipFilename) override
Clear the current content of this archive and unzip.
CORE_EXPORT bool zip(const QString &zip, const QStringList &files)
Zip the list of files in the zip file.
CORE_EXPORT bool unzip(const QString &zip, const QString &dir, QStringList &files, bool checkConsistency=true)
Unzip a zip file in an output directory.