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Copy pathMapServerMapFileLoader.cs
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Copy pathMapServerMapFileLoader.cs
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496 lines (461 loc) · 20.6 KB
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using System;
using System.Collections.Generic;
using System.IO;
using Common.Logging;
using System.Drawing;
using SharpMap.Layers;
using System.Globalization;
using SharpMap.Styles;
using GeoAPI.Geometries;
namespace SharpMap.Serialization
{
/// <summary>
/// Creates a SharpMap MapObject from a MapServer MAP File
/// </summary>
public static class MapServerMapFileLoader
{
private static readonly ILog _logger = LogManager.GetLogger(typeof(MapServerMapFileLoader));
/// <summary>
/// Loads a map from a map file
/// </summary>
/// <param name="filePath">Path to the map file</param>
/// <returns>A map</returns>
public static Map LoadMapFile(string filePath)
{
Map m = null;
if (File.Exists(filePath))
{
using (FileStream fs = File.OpenRead(filePath))
{
m = LoadMapFile(fs, Path.GetDirectoryName(filePath));
fs.Close();
}
}
return m;
}
/// <summary>
/// Loads a map from a map file stream
/// </summary>
/// <param name="s">A map file stream</param>
/// <param name="basePath">Path to the folder of the map file stream</param>
/// <returns>A map</returns>
public static Map LoadMapFile(Stream s, string basePath)
{
Map m = new Map();
using (StreamReader sr = new StreamReader(s))
{
try
{
string line;
while ((line = sr.ReadLine()) != null)
{
line = TrimFixLine(line);
string[] parts = ParseLine(line);
if (parts != null && parts.Length > 0)
{
if (string.Compare(parts[0], "MAP", StringComparison.InvariantCultureIgnoreCase) == 0)
{
ParseMap(sr, m, basePath);
}
}
}
}
catch (Exception ee)
{
_logger.Error("Exception when loading MapFile", ee);
}
finally
{
sr.Close();
}
}
return m;
}
/// <summary>
/// Parses the MAP element
/// </summary>
/// <param name="sr">A text reader</param>
/// <param name="m">The map</param>
/// <param name="basePath">Path to the folder of the map file stream</param>
private static void ParseMap(TextReader sr, Map m, string basePath)
{
string line;
while ((line = sr.ReadLine()) != null)
{
line = TrimFixLine(line);
string[] parts = ParseLine(line);
string shapePath = basePath;
if (parts != null && parts.Length > 0)
{
if (string.Compare(parts[0], "ANGLE", StringComparison.InvariantCultureIgnoreCase) == 0)
{
//TODO
}
else if (string.Compare(parts[0], "SHAPEPATH", StringComparison.InvariantCultureIgnoreCase) == 0)
{
shapePath = parts[1];
}
else if (string.Compare(parts[0], "EXTENT", StringComparison.InvariantCultureIgnoreCase) == 0)
{
var env = new Envelope(Convert.ToDouble(parts[1], CultureInfo.InvariantCulture),
Convert.ToDouble(parts[3], CultureInfo.InvariantCulture),
Convert.ToDouble(parts[2], CultureInfo.InvariantCulture),
Convert.ToDouble(parts[4], CultureInfo.InvariantCulture));
m.ZoomToBox(env);
}
else if (string.Compare(parts[0], "IMAGECOLOR", StringComparison.InvariantCultureIgnoreCase) == 0)
{
m.BackColor = Color.FromArgb(Convert.ToInt32(parts[1]), Convert.ToInt32(parts[2]), Convert.ToInt32(parts[3]));
}
else if (string.Compare(parts[0], "LAYER", StringComparison.InvariantCultureIgnoreCase) == 0)
{
ParseLayer(sr, m, shapePath);
}
else if (string.Compare(parts[0], "WEB", StringComparison.InvariantCultureIgnoreCase) == 0)
{
//Just parse it to the END element
while ((line = sr.ReadLine()) != null)
{
line = TrimFixLine(line);
parts = ParseLine(line);
if (parts != null && parts.Length > 0)
{
if (string.Compare(parts[0], "END", StringComparison.InvariantCultureIgnoreCase) == 0)
{
break;
}
}
}
}
else if (string.Compare(parts[0], "END", StringComparison.InvariantCultureIgnoreCase) == 0)
{
return;
}
}
}
}
/// <summary>
/// Parses a Layer element
/// </summary>
/// <param name="sr">A text reader</param>
/// <param name="m">The map</param>
/// <param name="shapePath">Path to the geodata file</param>
private static void ParseLayer(TextReader sr, Map m, string shapePath)
{
string line;
double maxScale = double.MaxValue;
double minScale = double.MinValue;
string connType = "local";
string name = "";
string data = "";
string type = "";
string classItem = "";
List<ClassElement> classes = new List<ClassElement>();
while ((line = sr.ReadLine()) != null)
{
line = TrimFixLine(line);
string[] parts = ParseLine(line);
if (parts != null && parts.Length > 0)
{
if (string.Compare(parts[0], "CLASS", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classes.Add(ParseClass(sr));
}
else if (string.Compare(parts[0], "CLASSITEM", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classItem = parts[1];
}
else if (string.Compare(parts[0], "END", StringComparison.InvariantCultureIgnoreCase) == 0)
{
var lay = new VectorLayer(name);
lay.MaxVisible = maxScale;
lay.MinVisible = minScale;
if (connType == "local")
{
if (!Path.HasExtension(data))
data = data + ".shp";
Data.Providers.ShapeFile sf = new Data.Providers.ShapeFile(data, true);
lay.DataSource = sf;
}
ApplyStyling(lay, classes,classItem, type);
m.Layers.Add(lay);
return;
}
else if (string.Compare(parts[0], "MAXSCALEDENOM", StringComparison.InvariantCultureIgnoreCase) == 0)
{
maxScale = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "TYPE", StringComparison.InvariantCultureIgnoreCase) == 0)
{
type = parts[1];
}
else if (string.Compare(parts[0], "MINSCALEDENOM", StringComparison.InvariantCultureIgnoreCase) == 0)
{
minScale = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "NAME", StringComparison.InvariantCultureIgnoreCase) == 0)
{
name = parts[1];
}
else if (string.Compare(parts[0], "OPACITY", StringComparison.InvariantCultureIgnoreCase) == 0)
{
minScale = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "DATA", StringComparison.InvariantCultureIgnoreCase) == 0)
{
data = parts[1];
if (!Path.IsPathRooted(data))
{
data = Path.Combine(shapePath, data);
}
}
}
}
}
private static void ApplyStyling(ILayer lay, IReadOnlyList<ClassElement> classes, string classItem, string type)
{
if (!(lay is VectorLayer vLay))
return;
if (classes.Count == 1)
{
/*Simple case.. only one class*/
vLay.Style = CreateStyle(classes[0].Styles.ToArray(), type);
lay.MaxVisible = classes[0].MaxScale;
lay.MinVisible = classes[0].MinScale;
}
else
{
/* Need to apply themes for be able to do this..*/
//(lay as VectorLayer).Theme = new SharpMap.Rendering.Thematics.C
Dictionary<string, IStyle> styleMap = new Dictionary<string, IStyle>();
foreach (var c in classes)
{
styleMap.Add(c.Expression, CreateStyle(c.Styles.ToArray(), type));
}
vLay.Theme = new Rendering.Thematics.UniqueValuesTheme<string>(classItem, styleMap, new VectorStyle());
}
}
private static VectorStyle CreateStyle(StyleElement[] styles, string type)
{
if (styles.Length == 1)
{
VectorStyle vs = new VectorStyle();
vs.Symbol = null;
vs.Fill = null;
vs.Line = null;
if (string.Compare(type, "point", StringComparison.InvariantCultureIgnoreCase) == 0)
{
Brush b = new SolidBrush(styles[0].Color);
vs.PointColor = b;
vs.PointSize = (float)styles[0].Size;
if (styles[0].Offset != Point.Empty)
{
vs.SymbolOffset = new PointF(styles[0].Offset.X, styles[0].Offset.Y);
}
}
else if (string.Compare(type, "line", StringComparison.InvariantCultureIgnoreCase) == 0)
{
vs.Line = new Pen(styles[0].Color, (float)styles[0].Width);
if (styles[0].Offset != Point.Empty)
{
vs.LineOffset = styles[0].Offset.Y;
}
}
else if (string.Compare(type, "polygon", StringComparison.InvariantCultureIgnoreCase) == 0)
{
Brush b = new SolidBrush(styles[0].Color);
vs.Fill = b;
}
if (styles[0].OutlineColor != Color.Empty)
{
vs.EnableOutline = true;
vs.Outline = new Pen(styles[0].OutlineColor);
}
return vs;
}
else
{
GroupStyle gs = new GroupStyle();
for (int i = 0; i < styles.Length; i++)
gs.AddStyle(CreateStyle(new [] { styles[i] }, type));
return gs;
}
}
private static ClassElement ParseClass(TextReader sr)
{
string line;
ClassElement classEl = new ClassElement()
{
MaxScale = double.MaxValue,
MinScale = double.MinValue,
Styles = new List<StyleElement>()
};
while ((line = sr.ReadLine()) != null)
{
line = TrimFixLine(line);
string[] parts = ParseLine(line);
if (parts != null && parts.Length > 0)
{
if (string.Compare(parts[0],"END", StringComparison.InvariantCultureIgnoreCase) == 0)
{
return classEl;
}
else if (string.Compare(parts[0], "STYLE", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classEl.Styles.Add(ParseStyle(sr));
}
else if (string.Compare(parts[0], "MAXSCALEDENOM", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classEl.MaxScale = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "MINSCALEDENOM", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classEl.MinScale = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "EXPRESSION", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classEl.Expression = parts[1];
}
else if (string.Compare(parts[0], "NAME", StringComparison.InvariantCultureIgnoreCase) == 0)
{
classEl.Name= parts[1];
}
}
}
return null;
}
private static StyleElement ParseStyle(TextReader sr)
{
string line;
StyleElement styleEl = new StyleElement()
{
Angle = 0,
LineCap = System.Drawing.Drawing2D.LineCap.Round,
LineJoin = System.Drawing.Drawing2D.LineJoin.Round,
BackGroundColor = Color.Empty,
OutlineColor = Color.Empty,
Size = 1,
Offset = Point.Empty
};
while ((line = sr.ReadLine()) != null)
{
line = TrimFixLine(line);
string[] parts = ParseLine(line);
if (parts != null && parts.Length > 0)
{
if (string.Compare(parts[0], "END", StringComparison.InvariantCultureIgnoreCase) == 0)
{
return styleEl;
}
else if (string.Compare(parts[0], "BACKGROUNDCOLOR", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.BackGroundColor = Color.FromArgb(int.Parse(parts[1]), int.Parse(parts[2]), int.Parse(parts[3]));
}
else if (string.Compare(parts[0], "COLOR", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.Color = Color.FromArgb(int.Parse(parts[1]), int.Parse(parts[2]), int.Parse(parts[3]));
}
else if (string.Compare(parts[0], "EXPRESSION", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.Offset = new Point(int.Parse(parts[1]), int.Parse(parts[2]));
}
else if (string.Compare(parts[0], "SIZE", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.Size = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "WIDTH", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.Width = Convert.ToDouble(parts[1], CultureInfo.InvariantCulture);
}
else if (string.Compare(parts[0], "WIDTH", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.Symbol = parts[1];
}
else if (string.Compare(parts[0], "OUTLINECOLOR", StringComparison.InvariantCultureIgnoreCase) == 0)
{
styleEl.OutlineColor = Color.FromArgb(int.Parse(parts[1]), int.Parse(parts[2]), int.Parse(parts[3]));
}
else if (string.Compare(parts[0], "LINECAP", StringComparison.InvariantCultureIgnoreCase) == 0)
{
switch(parts[1].ToLower())
{
case "square":
styleEl.LineCap = System.Drawing.Drawing2D.LineCap.Square;
break;
case "round":
styleEl.LineCap = System.Drawing.Drawing2D.LineCap.Round;
break;
case "butt":
styleEl.LineCap = System.Drawing.Drawing2D.LineCap.Flat;
break;
}
}
else if (string.Compare(parts[0], "LINEJOIN", StringComparison.InvariantCultureIgnoreCase) == 0)
{
switch (parts[1].ToLower())
{
case "miter":
styleEl.LineJoin = System.Drawing.Drawing2D.LineJoin.Miter;
break;
case "round":
styleEl.LineJoin = System.Drawing.Drawing2D.LineJoin.Round;
break;
case "bevel":
styleEl.LineJoin = System.Drawing.Drawing2D.LineJoin.Bevel;
break;
}
}
}
}
return null;
}
private static string TrimFixLine(string line)
{
int pos = line.IndexOf('#');
if (pos == 0)
return "";
if (pos > 0)
{
line = line.Substring(0, pos);
}
return line.Trim();
}
static string[] ParseLine(string line)
{
char[] parmChars = line.ToCharArray();
bool inQuote = false;
for (int index = 0; index < parmChars.Length; index++)
{
if (parmChars[index] == '"' || parmChars[index] == '\'')
inQuote = !inQuote;
if (!inQuote && parmChars[index] == ' ')
parmChars[index] = '\n';
}
string[] parts = new string(parmChars).Split(new [] {'\n'}, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < parts.Length; i++)
parts[i] = parts[i].Trim(' ', '\"','\'');
return parts;
}
class StyleElement
{
public Color Color { get; set; }
public Color OutlineColor { get; set; }
public string Symbol { get; set; }
public double Angle { get; set; }
public double Size { get; set; }
public double Width { get; set; }
public Color BackGroundColor { get; set; }
public System.Drawing.Drawing2D.LineCap LineCap { get; set; }
public System.Drawing.Drawing2D.LineJoin LineJoin { get; set; }
public Point Offset { get; set; }
}
class ClassElement
{
public string Name { get; set; }
public double MinScale { get; set; }
public double MaxScale { get; set; }
public string Expression { get; set; }
public List<StyleElement> Styles { get; set; }
}
}
}
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