/// <summary>
/// Computes the sizes of attribute fileds taking into accound
/// attribute values of the features.
/// </summary>
/// <param name="DbaseHeader">The header of the dBase attribute file</param>
/// <param name="Features">Enumerator of features</param>
private void RecountColumnLengths(DbaseFileHeader DbaseHeader, IEnumerable Features)
{
foreach (DbaseFieldDescriptor field in DbaseHeader.DBaseColumns)
{
var fieldValues = Features.OfType <Feature>().Select(f => f[field.Name]);
DbaseHeader.RecountColumnLength(field, fieldValues);
}
}
/// <summary>
/// Initializes a new instance of MapAround.IO.DbaseWriter
/// </summary>
/// <param name="filename">File name</param>
/// <param name="dbaseHeader">A dBase file header</param>
public DbaseWriter(string filename, DbaseFileHeader dbaseHeader)
{
if (filename == null)
throw new ArgumentNullException("filename");
this._header = dbaseHeader;
FileStream filestream = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Write);
_writer = new BinaryWriter(filestream, this._header.Encoding);
}
public DbaseReader(string filename)
{
if (!File.Exists(filename))
throw new FileNotFoundException(String.Format("File \"{0}\" not found", filename));
_filename = filename;
_headerIsParsed = false;
_dbaseHeader = new DbaseFileHeader();
}
public DbaseReader(string filename)
{
if (!File.Exists(filename))
{
throw new FileNotFoundException(String.Format("File \"{0}\" not found", filename));
}
_filename = filename;
_headerIsParsed = false;
_dbaseHeader = new DbaseFileHeader();
}
/// <summary>
/// Gets the header from a dbf file.
/// </summary>
/// <param name="dbfFile">The DBF file.</param>
/// <returns>The dBase file header</returns>
public static DbaseFileHeader GetDbaseHeader(string dbfFile)
{
if (!File.Exists(dbfFile))
{
throw new FileNotFoundException(dbfFile + " not found");
}
DbaseFileHeader header = new DbaseFileHeader();
header.Read(new BinaryReader(new FileStream(dbfFile, FileMode.Open, FileAccess.Read, FileShare.Read)));
return(header);
}
/// <summary>
/// Initializes a new instance of MapAround.IO.DbaseWriter
/// </summary>
/// <param name="filename">File name</param>
/// <param name="dbaseHeader">A dBase file header</param>
public DbaseWriter(string filename, DbaseFileHeader dbaseHeader)
{
if (filename == null)
{
throw new ArgumentNullException("filename");
}
this._header = dbaseHeader;
FileStream filestream = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Write);
_writer = new BinaryWriter(filestream, this._header.Encoding);
}
/// <summary>
/// Generates a dBase file header.
/// </summary>
/// <param name="dbFields">An array containing the dBase filed descriptors</param>
/// <param name="count">The record count</param>
/// <returns>A stub of dBase file header</returns>
public static DbaseFileHeader GetDbaseHeader(DbaseFieldDescriptor[] dbFields, int count)
{
DbaseFileHeader header = new DbaseFileHeader();
header.NumRecords = count;
foreach (DbaseFieldDescriptor dbField in dbFields)
{
header.AddColumn(dbField.Name, dbField.DbaseType, dbField.DataType, dbField.Length, dbField.DecimalCount);
}
return(header);
}
/// <summary>
/// Gets a stub of dBase file header
/// </summary>
/// <param name="feature">The feature</param>
/// <param name="count">The record count</param>
/// <param name="attributeNames">A list containing the attribute names</param>
/// <returns>A stub of dBase file header</returns>
public static DbaseFileHeader GetDbaseHeader(Feature feature, List <string> attributeNames, int count)
{
//string[] names = feature.Layer.FeatureAttributeNames.ToArray();// attribs.GetNames();
string[] names = attributeNames.ToArray();// attribs.GetNames();
DbaseFileHeader header = new DbaseFileHeader();
header.NumRecords = count;
int i = 0;
foreach (string name in names)
{
Type type = feature.Attributes[i].GetType();// attribs.GetType(name);
header.AddColumn(name, type);
i++;
}
header.Encoding = System.Text.ASCIIEncoding.ASCII;
return(header);
}
/// <summary>
/// Computes the count of DBF records
/// </summary>
/// <param name="DbaseHeader">The header of the dBase attribute file</param>
/// <param name="Features">Enumerator of features</param>
private void RecountRecords(DbaseFileHeader DbaseHeader, IEnumerable Features)
{
DbaseHeader.NumRecords = Features.Cast <Feature>().Count();
}
/// <summary>
/// Gets the header from a dbf file.
/// </summary>
/// <param name="dbfFile">The DBF file.</param>
/// <returns>The dBase file header</returns>
public static DbaseFileHeader GetDbaseHeader(string dbfFile)
{
if (!File.Exists(dbfFile))
throw new FileNotFoundException(dbfFile + " not found");
DbaseFileHeader header = new DbaseFileHeader();
header.Read(new BinaryReader(new FileStream(dbfFile, FileMode.Open, FileAccess.Read, FileShare.Read)));
return header;
}
/// <summary>
/// Generates a dBase file header.
/// </summary>
/// <param name="dbFields">An array containing the dBase filed descriptors</param>
/// <param name="count">The record count</param>
/// <returns>A stub of dBase file header</returns>
public static DbaseFileHeader GetDbaseHeader(DbaseFieldDescriptor[] dbFields, int count)
{
DbaseFileHeader header = new DbaseFileHeader();
header.NumRecords = count;
foreach (DbaseFieldDescriptor dbField in dbFields)
header.AddColumn(dbField.Name, dbField.DbaseType, dbField.DataType, dbField.Length, dbField.DecimalCount);
return header;
}
/// <summary>
/// Gets a stub of dBase file header
/// </summary>
/// <param name="feature">The feature</param>
/// <param name="count">The record count</param>
/// <param name="attributeNames">A list containing the attribute names</param>
/// <returns>A stub of dBase file header</returns>
public static DbaseFileHeader GetDbaseHeader(Feature feature, List<string> attributeNames, int count)
{
//string[] names = feature.Layer.FeatureAttributeNames.ToArray();// attribs.GetNames();
string[] names = attributeNames.ToArray();// attribs.GetNames();
DbaseFileHeader header = new DbaseFileHeader();
header.NumRecords = count;
int i = 0;
foreach (string name in names)
{
Type type = feature.Attributes[i].GetType();// attribs.GetType(name);
header.AddColumn(name, type);
i++;
}
header.Encoding = System.Text.ASCIIEncoding.ASCII;
return header;
}
/// <summary>
/// Computes the count of DBF records
/// </summary>
/// <param name="DbaseHeader">The header of the dBase attribute file</param>
/// <param name="Features">Enumerator of features</param>
private void RecountRecords(DbaseFileHeader DbaseHeader, IEnumerable Features)
{
DbaseHeader.NumRecords = Features.Cast<Feature>().Count();
}
/// <summary>
/// Computes the sizes of attribute fileds taking into accound
/// attribute values of the features.
/// </summary>
/// <param name="DbaseHeader">The header of the dBase attribute file</param>
/// <param name="Features">Enumerator of features</param>
private void RecountColumnLengths(DbaseFileHeader DbaseHeader, IEnumerable Features)
{
foreach (DbaseFieldDescriptor field in DbaseHeader.DBaseColumns)
{
var fieldValues = Features.OfType<Feature>().Select(f => f[field.Name]);
DbaseHeader.RecountColumnLength(field, fieldValues);
}
}
