intial check in of spit sources

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@650 c8812cc2-4d05-0410-92ff-de0c093fc19c

plugins/spit/qgsshapefile.cpp

@@ -0,0 +1,227 @@
+/***************************************************************************
+                          qgsshapefile.cpp  -  description
+                             -------------------
+    begin                : Fri Dec 19 2003
+    copyright            : (C) 2003 by Denis Antipov
+    email                : 
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+/* $Id$ */
+
+#include <qapplication.h>
+#include <ogrsf_frmts.h>
+#include <ogr_geometry.h>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <cstdio>
+extern "C"
+{
+  #include <libpq-fe.h>
+}
+
+#include "qgsdbfbase.h"
+#include "cpl_error.h"
+#include "qgsshapefile.h"
+
+
+QgsShapeFile::QgsShapeFile(QString name){
+  filename = name;
+  features = 0;
+  OGRRegisterAll();
+  ogrDataSource = OGRSFDriverRegistrar::Open((const char *) filename);
+  if (ogrDataSource != NULL){
+    valid = true;
+    ogrLayer = ogrDataSource->GetLayer(0);
+    features = ogrLayer->GetFeatureCount();
+  }
+  else
+    valid = false;
+  setDefaultTable();
+}
+
+QgsShapeFile::~QgsShapeFile(){
+  delete ogrLayer;
+  delete ogrDataSource;
+  delete filename;
+  delete geom_type;
+}
+
+int QgsShapeFile::getFeatureCount(){
+  return features;
+}
+
+QString QgsShapeFile::getFeatureClass(){
+  OGRFeature *feat = ogrLayer->GetNextFeature();
+  if(feat){
+    OGRGeometry *geom = feat->GetGeometryRef();
+    if(geom){
+      geom_type = QString(geom->getGeometryName());
+
+      QString file(filename);
+      file.replace(file.length()-3, 3, "dbf");
+      // open the dbf file
+      std::ifstream dbf((const char*)file, std::ios::in | std::ios::binary);
+      // read header
+      DbaseHeader dbh;
+      dbf.read((char *)&dbh, sizeof(dbh));
+
+      Fda fda;
+      QString str_type = "varchar(";
+      for(int field_count = 0, bytes_read = sizeof(dbh); bytes_read < dbh.size_hdr-1; field_count++, bytes_read += sizeof(fda)){
+      	dbf.read((char *)&fda, sizeof(fda));
+        switch(fda.field_type){
+          case 'N': if((int)fda.field_decimal>0)
+                      column_types.push_back("float");
+                    else
+                      column_types.push_back("int");          
+                    break;
+          case 'F': column_types.push_back("float");
+                    break;                    
+          case 'D': column_types.push_back("date");
+                    break;
+          case 'C': 
+                    str_type= QString("varchar(%1)").arg(fda.field_length);
+                    column_types.push_back(str_type);
+                    break;
+          case 'L': column_types.push_back("boolean");
+                    break;
+          default:
+                    column_types.push_back("varchar(256)");
+                    break;
+        }
+      }
+      dbf.close();
+      int numFields = feat->GetFieldCount();
+      for(int n=0; n<numFields; n++)
+        column_names.push_back(feat->GetFieldDefnRef(n)->GetNameRef());
+      
+    }else valid = false;
+    delete feat;
+  }else valid = false;
+  
+  ogrLayer->ResetReading();    
+  return valid?geom_type:NULL;
+}
+
+bool QgsShapeFile::is_valid(){
+  return valid;
+}
+
+QString QgsShapeFile::getName(){
+  return filename;
+}
+
+QString QgsShapeFile::getTable(){
+  return table_name;
+}
+
+void QgsShapeFile::setTable(QString new_table){
+  table_name = new_table;
+}
+
+void QgsShapeFile::setDefaultTable(){
+  QString name(filename);
+  name = name.section('/', -1);
+  table_name = name.section('.', 0, 0);
+}
+
+bool QgsShapeFile::insertLayer(QString dbname, QString geom_col, QString srid, PGconn * conn, QProgressDialog * pro, bool &fin){
+  connect(pro, SIGNAL(cancelled()), this, SLOT(cancelImport()));
+  import_cancelled = false;
+  bool result = true;
+  QString message;
+
+  QString query = "CREATE TABLE "+table_name+"(gid int4, ";
+  for(int n=0; n<column_names.size(); n++){
+    query += column_names[n].lower();
+    query += " ";
+    query += column_types[n];
+    if(n < column_names.size() -1)
+      query += ", ";
+  }
+  query += ")";  
+  PGresult *res = PQexec(conn, (const char *)query);
+  message = PQresultErrorMessage(res);  
+  if(message != ""){
+    // flag error and send query and error message to stdout on debug
+    result = false;
+    qWarning(query);
+    qWarning(PQresultErrorMessage(res));
+  }
+  PQclear(res);
+
+  query = "SELECT AddGeometryColumn(\'" + dbname + "\', \'" + table_name + "\', \'"+geom_col+"\', " + srid +
+    ", \'" + QString(geom_type) + "\', 2)";            
+  if(result) res = PQexec(conn, (const char *)query);
+  message = PQresultErrorMessage(res);
+  if(message != "") result = false;
+
+  //adding the data into the table
+  for(int m=0;m<features && result; m++){
+    if(import_cancelled){
+      fin = true;
+      break;
+    }
+    OGRFeature *feat = ogrLayer->GetNextFeature();
+    if(feat){
+      OGRGeometry *geom = feat->GetGeometryRef();
+      if(geom){
+        query = "INSERT INTO "+table_name+QString(" VALUES( %1, ").arg(m);
+        
+        int num = geom->WkbSize();
+        char * geo_temp = new char[num*3];
+        geom->exportToWkt(&geo_temp);
+        QString geometry(geo_temp);
+
+        QString quotes;
+        for(int n=0; n<column_types.size(); n++){
+          if(column_types[n] == "int" || column_types[n] == "float")
+            quotes = " ";
+          else
+            quotes = "\'";
+          query += quotes;
+          
+          // escape single quotes to prevent sql syntax error (no effect for numerics)
+          QString val = feat->GetFieldAsString(n);
+          val.replace("\'","\\\'");
+          val.replace("\'","\\\'");
+          // add escaped value to the query 
+          query += val;
+          query += QString(quotes + ", ");
+
+        }
+        query += QString("GeometryFromText(\'")+geometry+QString("\', ")+srid+QString("))");
+        
+        PQclear(res);       
+        if(result) res = PQexec(conn, (const char *)query);
+        message = PQresultErrorMessage(res);
+        if(message != ""){
+          // flag error and send query and error message to stdout on debug
+          result = false;
+          qWarning(query);
+          qWarning(PQresultErrorMessage(res));
+        }
+        pro->setProgress(pro->progress()+1);
+        qApp->processEvents();
+        delete[] geo_temp;
+      }
+      delete feat;
+    }
+  }
+  ogrLayer->ResetReading();
+  PQclear(res);
+  return result;
+}
+
+void QgsShapeFile::cancelImport(){
+  import_cancelled = true;
+}

plugins/spit/qgsshapefile.h

@@ -0,0 +1,70 @@
+/***************************************************************************
+                          qgsshapefile.h  -  description
+                             -------------------
+    begin                : Fri Dec 19 2003
+    copyright            : (C) 2003 by Denis Antipov
+    email                : 
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+/* $Id$ */
+
+#ifndef QGSSHAPEFILE_H
+#define QGSSHAPEFILE_H
+
+#include <vector>
+#include <qstring.h>
+#include <qobject.h>
+#include <ogrsf_frmts.h>
+#include <qprogressdialog.h>
+extern "C"
+{
+  #include <libpq-fe.h>
+}
+
+
+class OGRLayer;
+class OGRDataSource;
+ 
+class QgsShapeFile : public QObject
+{
+  Q_OBJECT
+  public:
+
+  QgsShapeFile(QString filename);
+  ~QgsShapeFile();
+  int getFeatureCount();
+  QString getFeatureClass();
+  bool insertLayer(QString dbname, QString geom_col, QString srid, struct pg_conn* conn, QProgressDialog * pro, bool &fin);
+    
+  bool is_valid();
+  QString getName();
+  QString getTable();
+  void setTable(QString new_table);
+  void setDefaultTable();
+  std::vector <QString> column_names;
+  std::vector <QString> column_types;
+
+
+  private:
+  QString table_name;
+  OGRDataSource *ogrDataSource;
+  OGRLayer * ogrLayer;
+  bool import_cancelled;
+  bool valid;
+  int features;
+  QString filename;
+  QString geom_type;
+
+  public slots:
+  void cancelImport();
+};
+
+#endif