From 933bb6c9254ba4761eb960c1b3893a9e57c39fb6 Mon Sep 17 00:00:00 2001
From: Bibiko <bibiko@eva.mpg.de>
Date: Thu, 7 Oct 2010 22:23:29 +0000
Subject: =?UTF-8?q?=E2=80=A2=20enhanced=20spatial=20support=20-=20implemen?=
 =?UTF-8?q?ted=20native=20routine=20to=20immediate=20AsText()=20[MULTIPOLY?=
 =?UTF-8?q?GON=20and=20GEOMETRYCOLLECTION=20are=20not=20yet=20ready]=20-?=
 =?UTF-8?q?=20enabled=20editing=20of=20spatial=20data=20in=20Content=20Vie?=
 =?UTF-8?q?w=20for=20tables=20and=20views=20and=20in=20Custom=20Query=20vi?=
 =?UTF-8?q?a=20wkt=20strings=20which=20will=20be=20saved=20automatically?=
 =?UTF-8?q?=20as=20wkb=20by=20using=20GeomFromText()?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../MCPKit/MCPFoundationKit/MCPGeometryData.h      |  25 +++-
 .../MCPKit/MCPFoundationKit/MCPGeometryData.m      | 126 ++++++++++++++++++++-
 Frameworks/MCPKit/MCPFoundationKit/MCPResult.m     |   2 +-
 .../MCPKit/MCPFoundationKit/MCPStreamingResult.m   |   2 +-
 4 files changed, 145 insertions(+), 10 deletions(-)

(limited to 'Frameworks/MCPKit')

diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h
index 60a7febf..c37e286d 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h
@@ -25,15 +25,34 @@
 #import <Cocoa/Cocoa.h>
 #import <Foundation/Foundation.h>
 
+enum wkbType
+{
+	wkb_point = 1,
+	wkb_linestring = 2,
+	wkb_polygon = 3,
+	wkb_multipoint = 4,
+	wkb_multilinestring = 5,
+	wkb_multipolygon = 6,
+	wkb_geometrycollection = 7
+};
+
+typedef struct st_point_2d_
+{
+	double x;
+	double y;
+} st_point_2d;
+
 @interface MCPGeometryData : NSObject <NSCoding, NSCopying>
 {
-	char *geoBuffer;
+	Byte *geoBuffer;
 	NSUInteger bufferLength;
 }
 
-- (id)initWithData:(NSData*)geoData;
-+ (id)dataWithData:(NSData*)geoData;
+- (id)initWithBytes:(Byte*)geoData length:(NSUInteger)length;
++ (id)dataWithBytes:(Byte*)geoData length:(NSUInteger)length;
 - (NSString*)description;
 - (NSUInteger)length;
+- (NSData*)data;
+- (NSString*)wktString;
 
 @end
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
index 9f7ac19a..6a41e657 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
@@ -25,6 +25,11 @@
 #import "MCPGeometryData.h"
 
 
+#define SIZEOF_STORED_UINT32 4
+#define SIZEOF_STORED_DOUBLE 8
+#define POINT_DATA_SIZE (SIZEOF_STORED_DOUBLE*2)
+#define WKB_HEADER_SIZE (1+SIZEOF_STORED_UINT32)
+
 @implementation MCPGeometryData
 
 - (id)copyWithZone:(NSZone *)zone { return [self retain]; }
@@ -38,20 +43,20 @@
 	return self;
 }
 
-- (id)initWithData:(NSData*)geoData
+- (id)initWithBytes:(Byte*)geoData length:(NSUInteger)length
 {
 	if ((self = [self init])) {
-		bufferLength = [geoData length];
+		bufferLength = length;
 		geoBuffer = malloc(bufferLength);
-		memcpy(geoBuffer, [geoData bytes], bufferLength);
+		memcpy(geoBuffer, geoData, bufferLength);
 	}
 	return self;
 }
 
 
-+ (id)dataWithData:(NSData*)geoData
++ (id)dataWithBytes:(Byte*)geoData length:(NSUInteger)length
 {
-	return [[[MCPGeometryData alloc] initWithData:geoData] autorelease];
+	return [[[MCPGeometryData alloc] initWithBytes:geoData length:length] autorelease];
 }
 
 - (NSString*)description
@@ -64,6 +69,117 @@
 	return bufferLength;
 }
 
+- (NSData*)data
+{
+	return [NSData dataWithBytes:geoBuffer length:bufferLength];
+}
+
+- (NSString*)wktString
+{
+	char byteOrder;
+	UInt32 geoType, c, c1;
+	st_point_2d aPoint;
+	NSUInteger ptr;
+	double x, y;
+	NSMutableString *wkt = [NSMutableString string];
+	NSUInteger i,j;
+	BOOL raw = NO;
+	
+	if (bufferLength < WKB_HEADER_SIZE)
+		return @"Error";
+
+	ptr = (raw) ? 0 : 4;
+
+	byteOrder = geoBuffer[ptr];
+
+	if(byteOrder != 0x1)
+		return @"Byte order not yet supported";
+
+	ptr++;
+	geoType = geoBuffer[ptr];
+	ptr += SIZEOF_STORED_UINT32;
+
+	NSData *d;
+	switch(geoType) {
+		case wkb_point:
+		memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+		return [NSString stringWithFormat:@"POINT(%.16g %.16g)",aPoint.x, aPoint.y];
+		break;
+		case wkb_linestring:
+		[wkt setString:@"LINESTRING("];
+		c = geoBuffer[ptr];
+		ptr += SIZEOF_STORED_UINT32;
+		for(i=0; i<c; i++) {
+			memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+			[wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i<c-1) ? @"," : @""];
+			ptr += POINT_DATA_SIZE;
+		}
+		[wkt appendString:@")"];
+		return wkt;
+		break;
+		case wkb_polygon:
+		[wkt setString:@"POLYGON("];
+		c = geoBuffer[ptr];
+		ptr += SIZEOF_STORED_UINT32;
+		for(i=0; i<c; i++) {
+			c1 = geoBuffer[ptr];
+			ptr += SIZEOF_STORED_UINT32;
+			[wkt appendString:@"("];
+			for(j=0; j<c1; j++) {
+				memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+				[wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j<c1-1) ? @"," : @""];
+				ptr += POINT_DATA_SIZE;
+			}
+			[wkt appendFormat:@")%@",  (i<c-1) ? @"," : @""];
+		}
+		[wkt appendString:@")"];
+		return wkt;
+		break;
+		case wkb_multipoint:
+		[wkt setString:@"MULTIPOINT("];
+		c = geoBuffer[ptr];
+		ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+		for(i=0; i<c; i++) {
+			memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+			[wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i<c-1) ? @"," : @""];
+			ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE;
+		}
+		[wkt appendString:@")"];
+		return wkt;
+		break;
+		case wkb_multilinestring:
+		[wkt setString:@"MULTILINESTRING("];
+		c = geoBuffer[ptr];
+		ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+		for(i=0; i<c; i++) {
+			c1 = geoBuffer[ptr];
+			ptr += SIZEOF_STORED_UINT32;
+			[wkt appendString:@"("];
+			for(j=0; j<c1; j++) {
+				memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+				[wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j<c1-1) ? @"," : @""];
+				ptr += POINT_DATA_SIZE;
+			}
+			ptr += WKB_HEADER_SIZE;
+			[wkt appendFormat:@")%@",  (i<c-1) ? @"," : @""];
+		}
+		[wkt appendString:@")"];
+		return wkt;
+		break;
+		case wkb_multipolygon:
+		// NSLog(@"ml %@", geoData);
+		
+		[wkt setString:@"MULTIPOLYGON be patient"];
+		break;
+		case wkb_geometrycollection:
+		[wkt setString:@"GEOMETRYCOLLECTION be patient"];
+		break;
+		default:
+		return @"Error geometry type parsing";
+	}
+	return wkt;
+}
+
 - (void)dealloc
 {
 	if(geoBuffer && bufferLength) free(geoBuffer);
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPResult.m b/Frameworks/MCPKit/MCPFoundationKit/MCPResult.m
index 82b0636e..24d14193 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPResult.m
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPResult.m
@@ -470,7 +470,7 @@ const OUR_CHARSET our_charsets60[] =
 					break;
 
 				case FIELD_TYPE_GEOMETRY:
-					theCurrentObj = [MCPGeometryData dataWithData:[NSData dataWithBytes:theData length:theLengths[i]]];
+					theCurrentObj = [MCPGeometryData dataWithBytes:theData length:theLengths[i]];
 					break;
 
 				default:
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPStreamingResult.m b/Frameworks/MCPKit/MCPFoundationKit/MCPStreamingResult.m
index 7822d896..d26dbafc 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPStreamingResult.m
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPStreamingResult.m
@@ -322,7 +322,7 @@ void _bytes2bin(Byte *n, NSUInteger nbytes, NSUInteger len, char *buf);
 					break;
 
 				case FIELD_TYPE_GEOMETRY:
-					cellData = [MCPGeometryData dataWithData:[NSData dataWithBytes:theData length:fieldLengths[i]]];
+					cellData = [MCPGeometryData dataWithBytes:theData length:fieldLengths[i]];
 					break;
 
 				default:
-- 
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