Streaming.Osm.Internal.Parser

Documentation

header :: Parser ()

Parse a BlobHeader.

advance :: Int -> Parser ()

Borrowed from Attoparsec.

blob :: Parser Blob

Called a Blob in the OSM literature.

block :: Parser Block

Called a PrimitiveBlock in the OSM literature.

stringTable :: Parser (Vector ByteString)

The String Table will never be empty, since all Elements have non-geographic metadata (username, etc.) which contain Strings. The result must be a Vector, since we need random access to its contents.

node :: Vector ByteString -> Parser Node

Parse a Node. Uses unsafeIndex to quickly retrieve its tag Strings, assuming that the Node's key/value pairs will always index a legal value in the given String Table.

dense :: Vector ByteString -> Parser [Node]

Parse a DenseNodes in a similar way to node.

denseTags :: Vector ByteString -> [Int] -> [Map ByteString ByteString]

Interpret a list of flattened key-value pairs as Tag metadata Maps.

way :: Vector ByteString -> Parser Way

Parse a Way.

relation :: Vector ByteString -> Parser Relation

Parse a Relation.

info :: Int -> Vector ByteString -> Parser Info

Parse an Info.

denseInfo :: [Int] -> Vector ByteString -> Parser [Maybe Info]

Parse a DenseInfo message.

varint :: Parser Int

Parse some Varint, which may be made up of multiple bytes.

packed :: ByteString -> [Int]

Reparse a ByteString as a list of some Varints.

ints :: ByteString -> [Int]

Decode some packed, Z-encoded, delta-encoded Ints.

offset :: Int -> Double

Restore truncated LatLng values to their true Double representation.

toffset :: Int -> Int

Restore truncated timestamps to the number of millis since the 1970 epoch.

booly :: Int -> Maybe Bool

Try to parse a Bool from a bit.