mssql2

FIGURE = INTERIOR_RING: 0x00 STROKE: 0x01 EXTERIOR_RING: 0x02 FIGURE_V2 = POINT: 0x00 LINE: 0x01 ARC: 0x02 COMPOSITE_CURVE: 0x03 SHAPE = POINT: 0x01 LINESTRING: 0x02 POLYGON: 0x03 MULTIPOINT: 0x04 MULTILINESTRING: 0x05 MULTIPOLYGON: 0x06 GEOMETRY_COLLECTION: 0x07 SHAPE_V2 = POINT: 0x01 LINESTRING: 0x02 POLYGON: 0x03 MULTIPOINT: 0x04 MULTILINESTRING: 0x05 MULTIPOLYGON: 0x06 GEOMETRY_COLLECTION: 0x07 CIRCULAR_STRING: 0x08 COMPOUND_CURVE: 0x09 CURVE_POLYGON: 0x0A FULL_GLOBE: 0x0B SEGMENT = LINE: 0x00 ARC: 0x01 FIRST_LINE: 0x02 FIRST_ARC: 0x03 class Point x: 0 y: 0 z: null m: null parseGeography = (buffer, geometry = false) -> # s2.1.1 + s.2.1.2 srid = buffer.readInt32LE 0 if srid is -1 then return null value = srid: srid version: buffer.readUInt8 4 flags = buffer.readUInt8 5 buffer.position = 6 #console.log "srid", srid #console.log "version", version properties = Z: if flags & (1 << 0) then true else false M: if flags & (1 << 1) then true else false V: if flags & (1 << 2) then true else false P: if flags & (1 << 3) then true else false L: if flags & (1 << 4) then true else false if value.version is 2 properties.H = if flags & (1 << 3) then true else false #console.log "properties", properties if properties.P numberOfPoints = 1 else if properties.L numberOfPoints = 2 else numberOfPoints = buffer.readUInt32LE buffer.position buffer.position += 4 #console.log "numberOfPoints", numberOfPoints value.points = parsePoints buffer, numberOfPoints if properties.Z parseZ buffer, value.points if properties.M parseM buffer, value.points #console.log "points", points if properties.P numberOfFigures = 1 else if properties.L numberOfFigures = 1 else numberOfFigures = buffer.readUInt32LE buffer.position buffer.position += 4 #console.log "numberOfFigures", numberOfFigures value.figures = parseFigures buffer, numberOfFigures, properties #console.log "figures", figures if properties.P numberOfShapes = 1 else if properties.L numberOfShapes = 1 else numberOfShapes = buffer.readUInt32LE buffer.position buffer.position += 4 #console.log "numberOfShapes", numberOfShapes value.shapes = parseShapes buffer, numberOfShapes, properties #console.log "shapes", shapes if value.version is 2 numberOfSegments = buffer.readUInt32LE buffer.position buffer.position += 4 #console.log "numberOfSegments", numberOfSegments value.segments = parseSegments buffer, numberOfSegments #console.log "segments", segments else value.segments = [] value parsePoints = (buffer, count) -> # s2.1.5 + s2.1.6 points = [] if count < 1 then return points for i in [1..count] points.push (point = new Point) point.x = buffer.readDoubleLE buffer.position point.y = buffer.readDoubleLE buffer.position + 8 buffer.position += 16 points parseZ = (buffer, points) -> # s2.1.1 + s.2.1.2 if points < 1 then return for point in points point.z = buffer.readDoubleLE buffer.position buffer.position += 8 parseM = (buffer, points) -> # s2.1.1 + s.2.1.2 if points < 1 then return for point in points point.m = buffer.readDoubleLE buffer.position buffer.position += 8 parseFigures = (buffer, count, properties) -> # s2.1.3 figures = [] if count < 1 then return figures if properties.P figures.push attribute: 0x01 pointOffset: 0 else if properties.L figures.push attribute: 0x01 pointOffset: 0 else for i in [1..count] figures.push attribute: buffer.readUInt8 buffer.position pointOffset: buffer.readInt32LE buffer.position + 1 buffer.position += 5 figures parseShapes = (buffer, count, properties) -> # s2.1.4 shapes = [] if count < 1 then return shapes if properties.P shapes.push parentOffset: -1 figureOffset: 0 type: 0x01 else if properties.L shapes.push parentOffset: -1 figureOffset: 0 type: 0x02 else for i in [1..count] shapes.push parentOffset: buffer.readInt32LE buffer.position figureOffset: buffer.readInt32LE buffer.position + 4 type: buffer.readUInt8 buffer.position + 8 buffer.position += 9 shapes parseSegments = (buffer, count) -> # s2.1.7 segments = [] if count < 1 then return segments for i in [1..count] segments.push type: buffer.readUInt8 buffer.position buffer.position++ segments exports.PARSERS = geography: (buffer) -> parseGeography buffer geometry: (buffer) -> parseGeography buffer, true