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00056 #ifndef GEOS_IO_H
00057 #define GEOS_IO_H
00058
00059 #include <memory>
00060 #include <iostream>
00061 #include <string>
00062
00063
00064
00065 #include <geos/platform.h>
00066 #include <geos/geom.h>
00067 #include <geos/util.h>
00068
00069 using namespace std;
00070
00071 namespace geos {
00072
00077 class ParseException: public GEOSException {
00078 public:
00079 ParseException();
00080 ParseException(string msg);
00081 ParseException(string msg, string var);
00082 ParseException(string msg, double num);
00083 ~ParseException();
00084 };
00085
00086 class StringTokenizer {
00087 public:
00088 enum {
00089 TT_EOF,
00090 TT_EOL,
00091 TT_NUMBER,
00092 TT_WORD
00093 };
00094 StringTokenizer();
00095 StringTokenizer(string txt);
00096 ~StringTokenizer();
00097 int nextToken();
00098 int peekNextToken();
00099 double getNVal();
00100 string getSVal();
00101 private:
00102 string str;
00103 string stok;
00104 double ntok;
00105 };
00106
00111 class WKTReader {
00112 public:
00113
00114
00123 WKTReader(const GeometryFactory *gf);
00124
00125 ~WKTReader();
00126
00128 Geometry* read(string wellKnownText);
00129
00130
00131
00132 protected:
00133 CoordinateSequence* getCoordinates(StringTokenizer *tokenizer);
00134 double getNextNumber(StringTokenizer *tokenizer);
00135 string getNextEmptyOrOpener(StringTokenizer *tokenizer);
00136 string getNextCloserOrComma(StringTokenizer *tokenizer);
00137 string getNextCloser(StringTokenizer *tokenizer);
00138 string getNextWord(StringTokenizer *tokenizer);
00139 Geometry* readGeometryTaggedText(StringTokenizer *tokenizer);
00140 Point* readPointText(StringTokenizer *tokenizer);
00141 LineString* readLineStringText(StringTokenizer *tokenizer);
00142 LinearRing* readLinearRingText(StringTokenizer *tokenizer);
00143 MultiPoint* readMultiPointText(StringTokenizer *tokenizer);
00144 Polygon* readPolygonText(StringTokenizer *tokenizer);
00145 MultiLineString* readMultiLineStringText(StringTokenizer *tokenizer);
00146 MultiPolygon* readMultiPolygonText(StringTokenizer *tokenizer);
00147 GeometryCollection* readGeometryCollectionText(StringTokenizer *tokenizer);
00148 private:
00149 const GeometryFactory *geometryFactory;
00150 const PrecisionModel *precisionModel;
00151 Coordinate* getPreciseCoordinate(StringTokenizer *tokenizer);
00152 bool isNumberNext(StringTokenizer *tokenizer);
00153 };
00154
00155 class Writer {
00156 public:
00157 Writer();
00158 ~Writer();
00159 void write(string txt);
00160 string toString();
00161 private:
00162 string str;
00163 };
00164
00186 class WKTWriter {
00187 public:
00188 WKTWriter();
00189 ~WKTWriter();
00190
00191
00192
00193
00195 string write(const Geometry *geometry);
00196
00197
00198 void write(const Geometry *geometry, Writer *writer);
00199
00200 string writeFormatted(const Geometry *geometry);
00201
00202 void writeFormatted(const Geometry *geometry, Writer *writer);
00203
00204 protected:
00205 string formatter;
00206 void appendGeometryTaggedText(const Geometry *geometry, int level, Writer *writer);
00207 void appendPointTaggedText(const Coordinate* coordinate, int level, Writer *writer, const PrecisionModel* precisionModel);
00208 void appendLineStringTaggedText(const LineString *lineString, int level, Writer *writer);
00209 void appendLinearRingTaggedText(const LinearRing *lineString, int level, Writer *writer);
00210 void appendPolygonTaggedText(const Polygon *polygon, int level, Writer *writer);
00211 void appendMultiPointTaggedText(const MultiPoint *multipoint, int level, Writer *writer);
00212 void appendMultiLineStringTaggedText(const MultiLineString *multiLineString, int level,Writer *writer);
00213 void appendMultiPolygonTaggedText(const MultiPolygon *multiPolygon, int level, Writer *writer);
00214 void appendGeometryCollectionTaggedText(const GeometryCollection *geometryCollection, int level,Writer *writer);
00215 void appendPointText(const Coordinate* coordinate, int level, Writer *writer, const PrecisionModel* precisionModel);
00216 void appendCoordinate(const Coordinate* coordinate, Writer *writer, const PrecisionModel* precisionModel);
00217 string writeNumber(double d);
00218 void appendLineStringText(const LineString *lineString, int level, bool doIndent, Writer *writer);
00219 void appendPolygonText(const Polygon *polygon, int level, bool indentFirst, Writer *writer);
00220 void appendMultiPointText(const MultiPoint *multiPoint, int level, Writer *writer);
00221 void appendMultiLineStringText(const MultiLineString *multiLineString, int level, bool indentFirst,Writer *writer);
00222 void appendMultiPolygonText(const MultiPolygon *multiPolygon, int level, Writer *writer);
00223 void appendGeometryCollectionText(const GeometryCollection *geometryCollection, int level,Writer *writer);
00224 private:
00225 enum {
00226 INDENT = 2
00227 };
00228
00229 static string createFormatter(const PrecisionModel* precisionModel);
00230 bool isFormatted;
00231 int level;
00232 void writeFormatted(const Geometry *geometry, bool isFormatted, Writer *writer);
00233 void indent(int level, Writer *writer);
00234 };
00235 }
00236 #endif