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-rw-r--r--Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h6
-rw-r--r--Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m218
2 files changed, 213 insertions, 11 deletions
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h
index c37e286d..7d141991 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.h
@@ -44,8 +44,12 @@ typedef struct st_point_2d_
@interface MCPGeometryData : NSObject <NSCoding, NSCopying>
{
+ // Holds the WKB bytes coming from SQL server
Byte *geoBuffer;
+
+ // Holds the buffer length
NSUInteger bufferLength;
+
}
- (id)initWithBytes:(Byte*)geoData length:(NSUInteger)length;
@@ -54,5 +58,7 @@ typedef struct st_point_2d_
- (NSUInteger)length;
- (NSData*)data;
- (NSString*)wktString;
+- (NSInteger)wkbType;
+- (NSString*)wktType;
@end
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
index 172596a0..1c511af3 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
@@ -29,6 +29,7 @@
#define SIZEOF_STORED_DOUBLE 8
#define POINT_DATA_SIZE (SIZEOF_STORED_DOUBLE*2)
#define WKB_HEADER_SIZE (1+SIZEOF_STORED_UINT32)
+#define BUFFER_START 4
@implementation MCPGeometryData
@@ -104,20 +105,17 @@
{
char byteOrder;
- UInt32 geoType, numberOfItems, numberOfSubItems;
+ UInt32 geoType, numberOfItems, numberOfSubItems, numberOfSubSubItems, numberOfCollectionItems;
st_point_2d aPoint;
- NSUInteger ptr, i, j;
+ NSUInteger i, j, k, n; // Loop counter for numberOf...Items
+ NSUInteger ptr = BUFFER_START; // pointer to geoBuffer while parsing
NSMutableString *wkt = [NSMutableString string];
- BOOL raw = NO; // is needed later
-
if (bufferLength < WKB_HEADER_SIZE)
return @"Header Error";
- ptr = (raw) ? 0 : 4;
-
byteOrder = geoBuffer[ptr];
if(byteOrder != 0x1)
@@ -200,21 +198,219 @@
break;
case wkb_multipolygon:
- // NSLog(@"ml %@", geoData);
-
- [wkt setString:@"MULTIPOLYGON be patient"];
+ [wkt setString:@"MULTIPOLYGON("];
+ numberOfItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+ for(i=0; i < numberOfItems; i++) {
+ numberOfSubItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ [wkt appendString:@"("];
+ for(j=0; j < numberOfSubItems; j++) {
+ numberOfSubSubItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ [wkt appendString:@"("];
+ for(k=0; k < numberOfSubSubItems; k++) {
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (k < numberOfSubSubItems-1) ? @"," : @""];
+ ptr += POINT_DATA_SIZE;
+ }
+ [wkt appendFormat:@")%@", (j < numberOfSubItems-1) ? @"," : @""];
+ }
+ ptr += WKB_HEADER_SIZE;
+ [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""];
+ }
+ [wkt appendString:@")"];
+ return wkt;
break;
case wkb_geometrycollection:
- [wkt setString:@"GEOMETRYCOLLECTION be patient"];
+ [wkt setString:@"GEOMETRYCOLLECTION("];
+ numberOfCollectionItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+
+ for(n=0; n < numberOfCollectionItems; n++) {
+
+ byteOrder = geoBuffer[ptr];
+
+ if(byteOrder != 0x1)
+ return @"Byte order not yet supported";
+
+ ptr++;
+ geoType = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+
+ switch(geoType) {
+
+ case wkb_point:
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"POINT(%.16g %.16g)", aPoint.x, aPoint.y];
+ ptr += POINT_DATA_SIZE;
+ break;
+
+ case wkb_linestring:
+ [wkt appendString:@"LINESTRING("];
+ numberOfItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ for(i=0; i < numberOfItems; i++) {
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i < numberOfItems-1) ? @"," : @""];
+ ptr += POINT_DATA_SIZE;
+ }
+ [wkt appendString:@")"];
+ break;
+
+ case wkb_polygon:
+ [wkt appendString:@"POLYGON("];
+ numberOfItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ for(i=0; i < numberOfItems; i++) {
+ numberOfSubItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ [wkt appendString:@"("];
+ for(j=0; j < numberOfSubItems; j++) {
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j < numberOfSubItems-1) ? @"," : @""];
+ ptr += POINT_DATA_SIZE;
+ }
+ [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""];
+ }
+ [wkt appendString:@")"];
+ break;
+
+ case wkb_multipoint:
+ [wkt appendString:@"MULTIPOINT("];
+ numberOfItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+ for(i=0; i < numberOfItems; i++) {
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i < numberOfItems-1) ? @"," : @""];
+ ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE;
+ }
+ ptr -= WKB_HEADER_SIZE;
+ [wkt appendString:@")"];
+ break;
+
+ case wkb_multilinestring:
+ [wkt appendString:@"MULTILINESTRING("];
+ numberOfItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+ for(i=0; i < numberOfItems; i++) {
+ numberOfSubItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ [wkt appendString:@"("];
+ for(j=0; j < numberOfSubItems; j++) {
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j < numberOfSubItems-1) ? @"," : @""];
+ ptr += POINT_DATA_SIZE;
+ }
+ ptr += WKB_HEADER_SIZE;
+ [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""];
+ }
+ ptr -= WKB_HEADER_SIZE;
+ [wkt appendString:@")"];
+ break;
+
+ case wkb_multipolygon:
+ [wkt appendString:@"MULTIPOLYGON("];
+ numberOfItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+ for(i=0; i < numberOfItems; i++) {
+ numberOfSubItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ [wkt appendString:@"("];
+ for(j=0; j < numberOfSubItems; j++) {
+ numberOfSubSubItems = geoBuffer[ptr];
+ ptr += SIZEOF_STORED_UINT32;
+ [wkt appendString:@"("];
+ for(k=0; k < numberOfSubSubItems; k++) {
+ memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE);
+ [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (k < numberOfSubSubItems-1) ? @"," : @""];
+ ptr += POINT_DATA_SIZE;
+ }
+ [wkt appendFormat:@")%@", (j < numberOfSubItems-1) ? @"," : @""];
+ }
+ ptr += WKB_HEADER_SIZE;
+ [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""];
+ }
+ ptr -= WKB_HEADER_SIZE;
+ [wkt appendString:@")"];
+ break;
+
+ default:
+ return @"Error geometrycollection type parsing";
+ }
+ [wkt appendString:(n < numberOfCollectionItems-1) ? @"," : @""];
+ }
+ [wkt appendString:@")"];
+ return wkt;
break;
default:
return @"Error geometry type parsing";
}
- return wkt;
+ return @"Error while parsing";
}
+/**
+ * Return the WKB type of the geoBuffer ie if buffer represents a POINT, LINESTRING, etc.
+ * according to stored wkbType in header file. It returns -1 if an error occurred.
+ */
+- (NSInteger)wkbType
+{
+ char byteOrder;
+ UInt32 geoType;
+
+ NSUInteger ptr = BUFFER_START; // pointer to geoBuffer while parsing
+
+ if (bufferLength < WKB_HEADER_SIZE)
+ return @"Header Error";
+
+ byteOrder = geoBuffer[ptr];
+
+ if(byteOrder != 0x1)
+ return -1;
+
+ ptr++;
+ geoType = geoBuffer[ptr];
+
+ if(geoType > 0 && geoType < 8)
+ return geoType;
+ else
+ return -1;
+
+}
+
+/**
+ * Return the WKT type of the geoBuffer ie if buffer represents a POINT, LINESTRING, etc.
+ * according to stored wkbType in header file. It returns nil if an error occurred.
+ */
+- (NSString*)wktType
+{
+ switch([self wkbType])
+ {
+ case wkb_point:
+ return @"POINT";
+ case wkb_linestring:
+ return @"LINESTRING";
+ case wkb_polygon:
+ return @"POLYGON";
+ case wkb_multipoint:
+ return @"MULTIPOINT";
+ case wkb_multilinestring:
+ return @"MULTILINESTRING";
+ case wkb_multipolygon:
+ return @"MULTIPOLYGON";
+ case wkb_geometrycollection:
+ return @"GEOMETRYCOLLECTION";
+ default:
+ return nil;
+ }
+ return nil;
+}
+
+/**
+ * dealloc
+ */
- (void)dealloc
{
if(geoBuffer && bufferLength) free(geoBuffer);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-19 20:40:02 +0000