use VSIReadDir() from gdal instead of quazip for listing .zip files and remove quazip entirely, including HAVE_ZLIB variable ; set default scanZip to 2 (Basic Scan)

Author: etiennesky

CMakeLists.txt

@@ -258,20 +258,6 @@ FIND_PROGRAM(QT_LRELEASE_EXECUTABLE
     NO_DEFAULT_PATH
     )
 
-
-#############################################################
-# search for zlib optional, used by quazip
-# this uses script provided by cmake
-# if WIN32 should use zlib from QT
-FIND_PACKAGE(ZLIB)
-IF (ZLIB_FOUND)
-  MESSAGE(STATUS "Found zlib: ${ZLIB_LIBRARY}")
-  SET(HAVE_ZLIB TRUE)
-ELSE (ZLIB_FOUND)
-  MESSAGE(STATUS "Could not find zlib (optional)")
-ENDIF(ZLIB_FOUND)
-
-
 #############################################################
 # enable warnings
 

PROVENANCE

@@ -68,35 +68,4 @@ licensed under the GPL or LGPL, version 2.
 == External Source Files ==
 The following files are included in the QGIS source tree from external
 sources. The source, license, and copyright are noted for each.
-=== src/core/quazip ===
-QuaZIP is the C++ wrapper for the Gilles Vollant's ZIP/UNZIP package
-using Trolltech's Qt library. 
-Copyright (C) 2005-2011 Sergey A. Tachenov
-Added to the QGIS source tree 17 April 2012 as part of a patch from 
-Etienne Tourigny <etourigny.dev@gmail.com>
-
- * COPYING
- * ioapi.h     
- * JlCompress.h  
- * quaadler32.cpp  
- * quachecksum32.h  
- * quacrc32.h  
- * quazipfile.cpp  
- * quazipfileinfo.h  
- * quazip.h       
- * quazipnewinfo.h  
- * unzip.c  
- * zip.c
- * crypt.h  
- * JlCompress.cpp  
- * qioapi.cpp    
- * quaadler32.h    
- * quacrc32.cpp 
- * quazip.cpp  
- * quazipfile.h    
- * quazip_global.h   
- * quazipnewinfo.cpp  
- * README.txt   
- * unzip.h  
- * zip.h
 

cmake_templates/qgsconfig.h.in

@@ -31,8 +31,6 @@
 
 #cmakedefine HAVE_SPATIALITE
 
-#cmakedefine HAVE_ZLIB
-
 #cmakedefine HAVE_MSSQL
 
 #cmakedefine HAVE_PYTHON

src/app/qgsoptions.cpp

@@ -210,17 +210,9 @@ QgsOptions::QgsOptions( QWidget *parent, Qt::WFlags fl ) :
   cmbScanZipInBrowser->clear();
   cmbScanZipInBrowser->addItem( tr( "No" ) );           // 0
   cmbScanZipInBrowser->addItem( tr( "Passthru" ) );     // 1
-  // only add these options if zlib is available
-#ifdef HAVE_ZLIB
   cmbScanZipInBrowser->addItem( tr( "Basic scan" ) );   // 2
   cmbScanZipInBrowser->addItem( tr( "Full scan" ) );    // 3
-  cmbScanZipInBrowser->setCurrentIndex( settings.value( "/qgis/scanZipInBrowser", 1 ).toInt() );
-#else
-  if ( settings.value( "/qgis/scanZipInBrowser", 1 ) == 0 )
-    cmbScanZipInBrowser->setCurrentIndex( 0 );
-  else
-    cmbScanZipInBrowser->setCurrentIndex( 1 );
-#endif
+  cmbScanZipInBrowser->setCurrentIndex( settings.value( "/qgis/scanZipInBrowser", 2 ).toInt() );
 
   // set the display update threshold
   spinBoxUpdateThreshold->setValue( settings.value( "/Map/updateThreshold" ).toInt() );

src/core/CMakeLists.txt

@@ -177,23 +177,6 @@ SET(QGIS_CORE_SRCS
   qgsspatialindex.cpp
 )
 
-IF(HAVE_ZLIB)
-  ADD_DEFINITIONS(-DQUAZIP_BUILD)
-
-  SET(QGIS_CORE_SRCS
-    ${QGIS_CORE_SRCS}
-    quazip/unzip.c  
-    quazip/zip.c
-    quazip/JlCompress.cpp
-    quazip/qioapi.cpp
-    quazip/quaadler32.cpp
-    quazip/quacrc32.cpp
-    quazip/quazip.cpp
-    quazip/quazipfile.cpp
-    quazip/quazipnewinfo.cpp
-    )
-ENDIF(HAVE_ZLIB)
-
 IF(WIN32)
   SET(QGIS_CORE_SRCS
     ${QGIS_CORE_SRCS}
@@ -298,13 +281,6 @@ SET(QGIS_CORE_MOC_HDRS
   gps/qextserialport/qextserialenumerator.h
 )
 
-IF (HAVE_ZLIB)
-  SET(QGIS_CORE_MOC_HDRS
-    ${QGIS_CORE_MOC_HDRS}
-    quazip/quazipfile.h
-    )
-ENDIF(HAVE_ZLIB)
-
 
 IF (QT_MOBILITY_LOCATION_FOUND)
   SET(QGIS_CORE_MOC_HDRS
@@ -541,11 +517,6 @@ ELSE (WITH_INTERNAL_SPATIALITE)
   TARGET_LINK_LIBRARIES(qgis_core ${SQLITE3_LIBRARY})
 ENDIF (WITH_INTERNAL_SPATIALITE)
 
-IF (HAVE_ZLIB)
-  INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIRS})
-  TARGET_LINK_LIBRARIES(qgis_core ${ZLIB_LIBRARY})
-ENDIF (HAVE_ZLIB)
-
 IF (APPLE)
   SET_TARGET_PROPERTIES(qgis_core PROPERTIES BUILD_WITH_INSTALL_RPATH TRUE)
 ENDIF (APPLE)

src/core/qgsdataitem.cpp

@@ -36,11 +36,9 @@
 #include "qgsproviderregistry.h"
 #include "qgsconfig.h"
 
-// use internal quazip for /vsizip support
-#ifdef HAVE_ZLIB
-#define QUAZIP_STATIC
-#include <quazip/quazip.h>
-#endif
+// use GDAL VSI mechanism
+#include "cpl_vsi.h"
+#include "cpl_string.h"
 
 // shared icons
 const QIcon &QgsLayerItem::iconPoint()
@@ -449,7 +447,7 @@ QVector<QgsDataItem*> QgsDirectoryItem::createChildren( )
   QVector<QgsDataItem*> children;
   QDir dir( mPath );
   QSettings settings;
-  bool scanZip = ( settings.value( "/qgis/scanZipInBrowser", 1 ).toInt() != 0 );
+  bool scanZip = ( settings.value( "/qgis/scanZipInBrowser", 2 ).toInt() != 0 );
 
   QStringList entries = dir.entryList( QDir::AllDirs | QDir::NoDotAndDotDot, QDir::Name | QDir::IgnoreCase );
   foreach( QString subdir, entries )
@@ -775,14 +773,70 @@ QgsZipItem::~QgsZipItem()
 {
 }
 
+// internal function to scan a vsidir (zip or tar file) recursively
+// hopefully this will make it to GDAL
+char **VSIReadDirRecursive1( const char *pszPath )
+{
+  char **papszFiles = NULL;
+  char **papszFiles1 = NULL;
+  char **papszFiles2 = NULL;
+  VSIStatBufL psStatBuf;
+  char szTemp1[1096];
+  char szTemp2[1096];
+
+  // get listing
+  papszFiles1 = VSIReadDir( pszPath );
+  if ( ! papszFiles1 )
+    return NULL;
+
+  // get files and directories inside listing
+  for ( int i = 0; i < CSLCount( papszFiles1 ); i++ )
+  {
+    // build complete file name for stat
+    strcpy( szTemp1, pszPath );
+    strcat( szTemp1, ( char* )"/" ); // this might not be ok on windows
+    strcat( szTemp1, papszFiles1[i] );
+    // if is file, add it
+    if ( VSIStatL( szTemp1, &psStatBuf ) == 0 &&
+         VSI_ISREG( psStatBuf.st_mode ) )
+    {
+      papszFiles = CSLAddString( papszFiles, papszFiles1[i] );
+    }
+    else if ( VSIStatL( szTemp1, &psStatBuf ) == 0 &&
+              VSI_ISDIR( psStatBuf.st_mode ) )
+    {
+      // add directory entry
+      strcpy( szTemp2, papszFiles1[i] );
+      strcat( szTemp2, ( char* )"/" ); // this might not be ok on windows
+      papszFiles = CSLAddString( papszFiles, szTemp2 );
+      // recursively add files inside directory
+      papszFiles2 = VSIReadDirRecursive1( szTemp1 );
+      if ( papszFiles2 )
+      {
+        for ( int j = 0; j < CSLCount( papszFiles2 ); j++ )
+        {
+          strcpy( szTemp2, papszFiles1[i] );
+          strcat( szTemp2, ( char* )"/" ); // this might not be ok on windows
+          strcat( szTemp2, papszFiles2[j] );
+          papszFiles = CSLAddString( papszFiles, szTemp2 );
+        }
+        CSLDestroy( papszFiles2 );
+      }
+    }
+  }
+  CSLDestroy( papszFiles1 );
+
+  return papszFiles;
+}
+
 QVector<QgsDataItem*> QgsZipItem::createChildren( )
 {
   QVector<QgsDataItem*> children;
   QString tmpPath;
   QString childPath;
 
   QSettings settings;
-  int scanZipSetting = settings.value( "/qgis/scanZipInBrowser", 1 ).toInt();
+  int scanZipSetting = settings.value( "/qgis/scanZipInBrowser", 2 ).toInt();
 
   mZipFileList.clear();
 
@@ -794,15 +848,6 @@ QVector<QgsDataItem*> QgsZipItem::createChildren( )
     return children;
   }
 
-#ifndef HAVE_ZLIB
-  // if zlib not available, only support Passthru
-  if ( scanZipSetting == 2 || scanZipSetting == 3 )
-  {
-    scanZipSetting = 1;
-    settings.setValue( "/qgis/scanZipInBrowser", 1 );
-  }
-#endif
-
   // if scanZipBrowser == 1 (Passthru): do not scan zip and allow to open directly with /vsizip/
   if ( scanZipSetting == 1 )
   {
@@ -811,32 +856,25 @@ QVector<QgsDataItem*> QgsZipItem::createChildren( )
     return children;
   }
 
-#ifdef HAVE_ZLIB
-  QgsDebugMsg( QString( "Open file %1 with quazip" ).arg( path() ) );
   // get list of files inside zip file
-  QuaZip zip( path() );
-  if ( ! zip.open( QuaZip::mdUnzip ) || ! zip.isOpen() )
+  QgsDebugMsg( QString( "Open file %1 with gdal vsi" ).arg( path() ) );
+  char **papszSiblingFiles = VSIReadDirRecursive1( QString( "/vsizip/" + path() ).toLocal8Bit().constData() );
+  if ( papszSiblingFiles )
   {
-    QgsDebugMsg( QString( "Zip error: %1" ).arg( zip.getZipError() ) );
-  }
-  else
-  {
-    for ( bool more = zip.goToFirstFile(); more; more = zip.goToNextFile() )
+    for ( int i = 0; i < CSLCount( papszSiblingFiles ); i++ )
     {
-      tmpPath = zip.getCurrentFileName();
+      tmpPath = papszSiblingFiles[i];
+      QgsDebugMsg( QString( "Read file %1" ).arg( tmpPath ) );
       // skip directories (files ending with /)
       if ( tmpPath.right( 1 ) != "/" )
         mZipFileList << tmpPath;
     }
-    zip.close();
+    CSLDestroy( papszSiblingFiles );
   }
-  if ( zip.getZipError() != UNZ_OK )
+  else
   {
-    QgsDebugMsg( QString( "Zip error: %1" ).arg( zip.getZipError() ) );
+    QgsDebugMsg( QString( "Error reading %1" ).arg( path() ) );
   }
-#else
-  QgsDebugMsg( QString( "Cannot open file %1 with quazip - zlib not configured" ).arg( path() ) );
-#endif
 
   // loop over files inside zip
   foreach( QString fileName, mZipFileList )
@@ -898,7 +936,7 @@ QVector<QgsDataItem*> QgsZipItem::createChildren( )
 QgsDataItem* QgsZipItem::itemFromPath( QgsDataItem* parent, QString path, QString name )
 {
   QSettings settings;
-  int scanZipSetting = settings.value( "/qgis/scanZipInBrowser", 1 ).toInt();
+  int scanZipSetting = settings.value( "/qgis/scanZipInBrowser", 2 ).toInt();
   QString vsizipPath = path;
   int zipFileCount = 0;
   QFileInfo fileInfo( path );