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00060 #ifndef GEOS_IO_H
00061 #define GEOS_IO_H
00062
00063 #include <memory>
00064 #include <iostream>
00065 #include <string>
00066 #include <geos/platform.h>
00067 #include <geos/geom.h>
00068 #include <geos/util.h>
00069
00070 using namespace std;
00071
00072 namespace geos {
00073
00078 class ParseException: public GEOSException {
00079 public:
00080 ParseException();
00081 ParseException(string msg);
00082 ParseException(string msg, string var);
00083 ParseException(string msg, double num);
00084 ~ParseException();
00085 };
00086
00087 class StringTokenizer {
00088 public:
00089 enum {
00090 TT_EOF,
00091 TT_EOL,
00092 TT_NUMBER,
00093 TT_WORD
00094 };
00095 StringTokenizer();
00096 StringTokenizer(string txt);
00097 ~StringTokenizer();
00098 int nextToken();
00099 int peekNextToken();
00100 double getNVal();
00101 string getSVal();
00102 private:
00103 string str;
00104 string stok;
00105 double ntok;
00106 };
00107
00112 class WKTReader {
00113 public:
00114
00115
00124 WKTReader(const GeometryFactory *gf);
00125
00126 ~WKTReader();
00127
00129 Geometry* read(string wellKnownText);
00130
00131
00132
00133 protected:
00134 CoordinateSequence* getCoordinates(StringTokenizer *tokenizer);
00135 double getNextNumber(StringTokenizer *tokenizer);
00136 string getNextEmptyOrOpener(StringTokenizer *tokenizer);
00137 string getNextCloserOrComma(StringTokenizer *tokenizer);
00138 string getNextCloser(StringTokenizer *tokenizer);
00139 string getNextWord(StringTokenizer *tokenizer);
00140 Geometry* readGeometryTaggedText(StringTokenizer *tokenizer);
00141 Point* readPointText(StringTokenizer *tokenizer);
00142 LineString* readLineStringText(StringTokenizer *tokenizer);
00143 LinearRing* readLinearRingText(StringTokenizer *tokenizer);
00144 MultiPoint* readMultiPointText(StringTokenizer *tokenizer);
00145 Polygon* readPolygonText(StringTokenizer *tokenizer);
00146 MultiLineString* readMultiLineStringText(StringTokenizer *tokenizer);
00147 MultiPolygon* readMultiPolygonText(StringTokenizer *tokenizer);
00148 GeometryCollection* readGeometryCollectionText(StringTokenizer *tokenizer);
00149 private:
00150 const GeometryFactory *geometryFactory;
00151 const PrecisionModel *precisionModel;
00152 Coordinate* getPreciseCoordinate(StringTokenizer *tokenizer);
00153 bool isNumberNext(StringTokenizer *tokenizer);
00154 };
00155
00156 class Writer {
00157 public:
00158 Writer();
00159 ~Writer();
00160 void write(string txt);
00161 string toString();
00162 private:
00163 string str;
00164 };
00165
00187 class WKTWriter {
00188 public:
00189 WKTWriter();
00190 ~WKTWriter();
00191
00192
00193
00194
00196 string write(const Geometry *geometry);
00197
00198
00199 void write(const Geometry *geometry, Writer *writer);
00200
00201 string writeFormatted(const Geometry *geometry);
00202
00203 void writeFormatted(const Geometry *geometry, Writer *writer);
00204
00205 protected:
00206 string formatter;
00207 void appendGeometryTaggedText(const Geometry *geometry, int level, Writer *writer);
00208 void appendPointTaggedText(const Coordinate* coordinate, int level, Writer *writer, const PrecisionModel* precisionModel);
00209 void appendLineStringTaggedText(const LineString *lineString, int level, Writer *writer);
00210 void appendLinearRingTaggedText(const LinearRing *lineString, int level, Writer *writer);
00211 void appendPolygonTaggedText(const Polygon *polygon, int level, Writer *writer);
00212 void appendMultiPointTaggedText(const MultiPoint *multipoint, int level, Writer *writer);
00213 void appendMultiLineStringTaggedText(const MultiLineString *multiLineString, int level,Writer *writer);
00214 void appendMultiPolygonTaggedText(const MultiPolygon *multiPolygon, int level, Writer *writer);
00215 void appendGeometryCollectionTaggedText(const GeometryCollection *geometryCollection, int level,Writer *writer);
00216 void appendPointText(const Coordinate* coordinate, int level, Writer *writer, const PrecisionModel* precisionModel);
00217 void appendCoordinate(const Coordinate* coordinate, Writer *writer, const PrecisionModel* precisionModel);
00218 string writeNumber(double d);
00219 void appendLineStringText(const LineString *lineString, int level, bool doIndent, Writer *writer);
00220 void appendPolygonText(const Polygon *polygon, int level, bool indentFirst, Writer *writer);
00221 void appendMultiPointText(const MultiPoint *multiPoint, int level, Writer *writer);
00222 void appendMultiLineStringText(const MultiLineString *multiLineString, int level, bool indentFirst,Writer *writer);
00223 void appendMultiPolygonText(const MultiPolygon *multiPolygon, int level, Writer *writer);
00224 void appendGeometryCollectionText(const GeometryCollection *geometryCollection, int level,Writer *writer);
00225 private:
00226 enum {
00227 INDENT = 2
00228 };
00229
00230 static string createFormatter(const PrecisionModel* precisionModel);
00231 bool isFormatted;
00232 int level;
00233 void writeFormatted(const Geometry *geometry, bool isFormatted, Writer *writer);
00234 void indent(int level, Writer *writer);
00235 };
00236 }
00237 #endif