-- GENERATED by C->Haskell Compiler, version 0.26.2 Budburst, 26 October 2015 (Haskell) -- Edit the ORIGNAL .chs file instead! {-# LINE 1 "src/Data/Grib/Raw/Value.chs" #-} {- | Module : Data.Grib.Raw.Value Copyright : (c) Mattias Jakobsson 2015 License : GPL-3 Maintainer : mjakob422@gmail.com Stability : unstable Portability : portable Access GRIB header and data values. Most of the documentation herein was copied from the official documentation of <https://software.ecmwf.int/wiki/display/GRIB/Module+Index grib_api>. -} module Data.Grib.Raw.Value ( -- * Get values gribGetLong , gribGetDouble , gribGetLongArray , gribGetDoubleArray , gribGetDoubleElement , gribGetDoubleElements , gribGetString , gribGetBytes , gribGetOffset , gribGetSize , gribGetLength -- * Set values , gribSetLong , gribSetDouble , gribSetLongArray , gribSetDoubleArray , gribSetString , gribSetBytes -- * Copy values , gribCopyNamespace ) where import qualified Foreign.C.Types as C2HSImp import qualified Foreign.Ptr as C2HSImp import Foreign ( Ptr, alloca, allocaArray, peek, peekArray, with , withArrayLen ) import Foreign.C ( CDouble, CLong, CSize, CString, peekCStringLen, withCString ) import Data.Grib.Raw.Handle {-# LINE 48 "src/Data/Grib/Raw/Value.chs" #-} import Data.Grib.Raw.Marshal {-# LINE 54 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_offset(grib_handle* h, const char* key, size_t* offset); -- -- |Get the number offset of a key in a message if several keys of -- the same name are present, the offset of the last one is returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. gribGetOffset :: (GribHandle) -> (Key) -> IO ((Int)) gribGetOffset a1 a2 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> alloca $ \a3' -> gribGetOffset'_ a1' a2' a3' >>= \res -> checkStatus res >> peekIntegral a3'>>= \a3'' -> return (a3'') {-# LINE 68 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_size(grib_handle* h, const char* key, size_t* size); -- -- |Get the number of coded value from a key, if several keys of the -- same name are present, the total sum is returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. gribGetSize :: (GribHandle) -> (Key) -> IO ((Int)) gribGetSize a1 a2 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> alloca $ \a3' -> gribGetSize'_ a1' a2' a3' >>= \res -> checkStatus res >> peekIntegral a3'>>= \a3'' -> return (a3'') {-# LINE 82 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_length(grib_handle* h, const char* key, size_t *length); -- -- |Get the length of the string representation of the key, if several -- keys of the same name are present, the maximum length is returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. gribGetLength :: (GribHandle) -> (Key) -> IO ((Int)) gribGetLength a1 a2 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> alloca $ \a3' -> gribGetLength'_ a1' a2' a3' >>= \res -> checkStatus res >> peekIntegral a3'>>= \a3'' -> return (a3'') {-# LINE 96 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_long(grib_handle* h, const char* key, long* value); -- -- |Get a long value from a key, if several keys of the same name are -- present, the last one is returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. gribGetLong :: (GribHandle) -> (Key) -> IO ((Int)) gribGetLong a1 a2 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> alloca $ \a3' -> gribGetLong'_ a1' a2' a3' >>= \res -> checkStatus res >> peekIntegral a3'>>= \a3'' -> return (a3'') {-# LINE 110 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_double(grib_handle* h, const char* key, double* value); -- -- |Get a double value from a key, if several keys of the same name -- are present, the last one is returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. gribGetDouble :: (GribHandle) -> (Key) -> IO ((Double)) gribGetDouble a1 a2 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> alloca $ \a3' -> gribGetDouble'_ a1' a2' a3' >>= \res -> checkStatus res >> peekReal a3'>>= \a3'' -> return (a3'') {-# LINE 124 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_double_element(grib_handle* h, const char* key, int i, -- double* value); -- -- There are no bounds check on i and a too large i often doesn't seem -- to lead to a segmentation fault. -- -- |Get as double the i-th element of the "key" array. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. -- -- __WARNING!__ There is no check if the index is out of bounds. gribGetDoubleElement :: (GribHandle) -> (Key) -> (Int) -> IO ((Double)) gribGetDoubleElement a1 a2 a3 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> let {a3' = fromIntegral a3} in alloca $ \a4' -> gribGetDoubleElement'_ a1' a2' a3' a4' >>= \res -> checkStatus res >> peekReal a4'>>= \a4'' -> return (a4'') {-# LINE 144 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_double_elements(grib_handle* h, const char* key, int* i, -- long size, double* value); -- -- This function is not macro expanded since the length of the output -- arguments depend on the length of the input arguments. -- -- |Get as double array the elements of the "key" array whose indexes -- are listed in the input array i. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. -- -- __WARNING!__ There is no check if the indices are out of bounds. gribGetDoubleElements :: GribHandle -> Key -> [Int] -> IO [Double] gribGetDoubleElements h key is = withGribHandle h $ \h' -> withCString key $ \key' -> withArrayLen (map fromIntegral is) $ \n is' -> allocaArray n $ \ds -> do cCall h' key' is' (fromIntegral n) ds >>= checkStatus fmap (map realToFrac) $ peekArray n ds where cCall = grib_get_double_elements {-# LINE 168 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_string(grib_handle* h, const char* key, char* mesg, -- size_t *length); -- -- This function is not macro expanded since an output marshaller -- would want to return another data type than the corresponding input -- marshaller accepts. -- -- |Get a string value from a key, if several keys of the same name -- are present, the last one is returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribBufferTooSmall@ if the allocated string is -- too small. -- -- This function takes an allocated 'CString' and its length, which is -- used to retrieve the string returned by the IO action. The -- 'CString' is not automatically allocated by this function since it -- could potentially be re-used between multiple calls and the length -- is not known beforehand. gribGetString :: GribHandle -- ^the handle to get the data from -> Key -- ^the key to be searched -> CString -- ^the address of a string where the -- data will be retrieved -> Int -- ^the allocated length of the string -> IO String -- ^an IO action that will return the -- string gribGetString h key cs n = withGribHandle h $ \h' -> withCString key $ \key' -> with (fromIntegral n) $ \n' -> do cCall h' key' cs n' >>= checkStatus fmap (fromIntegral . subtract 1) (peek n') >>= curry peekCStringLen cs where cCall = grib_get_string {-# LINE 205 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_bytes(grib_handle* h, const char* key, unsigned char* bytes, -- size_t *length); -- -- |Get raw bytes values from a key. -- -- If several keys of the same name are present, the last one is -- returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribArrayTooSmall@ if the allocated array is -- too small. gribGetBytes :: (GribHandle) -- ^the handle to get the data from -> (Key) -- ^the key to be searched -> (Bytes) -- ^the address of a byte array where the data will be retrieved -> (Int) -- ^the allocated length of the byte array -> IO ((Bytes), (Int)) -- ^an IO action that will return the address of the byte array and the number of bytes retrieved gribGetBytes a1 a2 a3 a4 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> let {a3' = id a3} in withIntegral a4 $ \a4' -> gribGetBytes'_ a1' a2' a3' a4' >>= \res -> checkStatus res >> let {a3'' = id a3'} in peekIntegral a4'>>= \a4'' -> return (a3'', a4'') {-# LINE 233 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_double_array(grib_handle* h, const char* key, double* vals, -- size_t *length); -- -- This function is not macro expanded since an output marshaller -- would want to return another data type than the corresponding input -- marshaller accepts. -- -- |Get double array values from a key. -- -- If several keys of the same name are present, the last one is -- returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribArrayTooSmall@ if the allocated array is -- too small. -- -- This function takes an allocated array and its length, which is -- used to retrieve the list returned by the IO action. The array is -- not automatically allocated by this function since it could -- potentially be re-used between multiple calls and the length is not -- known beforehand. gribGetDoubleArray :: GribHandle -- ^the handle to get the data from -> Key -- ^the key to be searched -> Ptr CDouble -- ^the address of a double array -- where the data will be retrieved -> Int -- ^the allocated length of the double -- array -> IO [Double] -- ^an IO action that will return the -- data in a list gribGetDoubleArray h key ds n = withGribHandle h $ \h' -> fmap (map realToFrac) $ getArray (cCall h') key ds n where cCall = grib_get_double_array {-# LINE 269 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_get_long_array(grib_handle* h, const char* key, long* vals, -- size_t *length); -- -- This function is not macro expanded since an output marshaller -- would want to return another data type than the corresponding input -- marshaller accepts. -- -- |Get long array values from a key. -- -- If several keys of the same name are present, the last one is -- returned. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribArrayTooSmall@ if the allocated array is -- too small. -- -- This function takes an allocated array and its length, which is -- used to retrieve the list returned by the IO action. The array is -- not automatically allocated by this function since it could -- potentially be re-used between multiple calls and the length is not -- known beforehand. gribGetLongArray :: GribHandle -- ^the handle to get the data from -> Key -- ^the key to be searched -> Ptr CLong -- ^the address of a long array where -- the data will be retrieved -> Int -- ^the allocated length of the long -- array -> IO [Int] -- ^an IO action that will return the -- data in a list gribGetLongArray h key ls n = withGribHandle h $ \h' -> fmap (map fromIntegral) $ getArray (cCall h') key ls n where cCall = grib_get_long_array {-# LINE 305 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_copy_namespace(grib_handle* dest, const char* name, -- grib_handle* src); -- -- |Copy the keys belonging to a given namespace from a source handle -- to a destination handle. -- -- This operation may fail with: -- -- * @isGribException GribNotImplemented@. gribCopyNamespace :: (GribHandle) -- ^destination handle -> (Maybe String) -- ^namespace (pass @Nothing@ to copy all keys) -> (GribHandle) -- ^source handle -> IO () -- ^an IO action that will copy the keys gribCopyNamespace a1 a2 a3 = (withGribHandle) a1 $ \a1' -> maybeWithCString a2 $ \a2' -> (withGribHandle) a3 $ \a3' -> gribCopyNamespace'_ a1' a2' a3' >>= \res -> checkStatus res >> return () {-# LINE 323 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_set_long(grib_handle* h, const char* key, long val); -- -- |Set a long value from a key. -- -- If several keys of the same name are present, the last one is set. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribReadOnly@ if the key is read-only. gribSetLong :: (GribHandle) -> (Key) -> (Int) -> IO () gribSetLong a1 a2 a3 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> let {a3' = fromIntegral a3} in gribSetLong'_ a1' a2' a3' >>= \res -> checkStatus res >> return () {-# LINE 340 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_set_double(grib_handle* h, const char* key, double val); -- -- |Set a double value from a key. -- -- If several keys of the same name are present, the last one is set. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribReadOnly@ if the key is read-only. gribSetDouble :: (GribHandle) -> (Key) -> (Double) -> IO () gribSetDouble a1 a2 a3 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> let {a3' = realToFrac a3} in gribSetDouble'_ a1' a2' a3' >>= \res -> checkStatus res >> return () {-# LINE 358 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_set_string(grib_handle* h, const char* key, const char* mesg, -- size_t *length); -- -- This function is not macro expanded since an output marshaller -- would want to return another data type than the corresponding input -- marshaller accepts. -- -- |Set a string value from a key and return the actual packed length. -- -- If several keys of the same name are present, the last one is set. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribReadOnly@ if the key is read-only. gribSetString :: GribHandle -> Key -> String -> IO Int gribSetString h key msg = withGribHandle h $ \h' -> withCString key $ \key' -> withCString msg $ \msg' -> with (fromIntegral $ length msg) $ \n -> do cCall h' key' msg' n >>= checkStatus fmap fromIntegral $ peek n where cCall = grib_set_string {-# LINE 384 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_set_bytes(grib_handle* h, const char* key, -- const unsigned char* bytes, size_t *length); -- -- |Set a bytes array from a key and return the actual packed length. -- -- If several keys of the same name are present, the last one is set. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing. gribSetBytes :: (GribHandle) -> (Key) -> (Bytes) -> (Int) -> IO ((Int)) gribSetBytes a1 a2 a3 a4 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> let {a3' = id a3} in withIntegral a4 $ \a4' -> gribSetBytes'_ a1' a2' a3' a4' >>= \res -> checkStatus res >> peekIntegral a4'>>= \a4'' -> return (a4'') {-# LINE 401 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_set_double_array(grib_handle* h, const char* key, -- const double* vals, size_t length); -- -- |Set a double array from a key. -- -- If several keys of the same name are present, the last one is set. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribReadOnly@ if the key is read-only. -- -- __WARNING!__ Strange things seem to happen if an empty list is -- passed in. gribSetDoubleArray :: (GribHandle) -> (Key) -> ([Double]) -> IO () gribSetDoubleArray a1 a2 a3 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> withRealArrayLen a3 $ \(a3'1, a3'2) -> gribSetDoubleArray'_ a1' a2' a3'1 a3'2 >>= \res -> checkStatus res >> return () {-# LINE 422 "src/Data/Grib/Raw/Value.chs" #-} -- int grib_set_long_array(grib_handle* h, const char* key, const long* vals, -- size_t length); -- -- |Set a long array from a key. -- -- If several keys of the same name are present, the last one is set. -- -- This operation may fail with: -- -- * @isGribException GribNotFound@ if the key is missing; or -- -- * @isGribException GribReadOnly@ if the key is read-only. gribSetLongArray :: (GribHandle) -> (Key) -> ([Int]) -> IO () gribSetLongArray a1 a2 a3 = (withGribHandle) a1 $ \a1' -> withCString a2 $ \a2' -> withIntegralArrayLen a3 $ \(a3'1, a3'2) -> gribSetLongArray'_ a1' a2' a3'1 a3'2 >>= \res -> checkStatus res >> return () {-# LINE 440 "src/Data/Grib/Raw/Value.chs" #-} foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_offset" gribGetOffset'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_size" gribGetSize'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_length" gribGetLength'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_long" gribGetLong'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CLong) -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_double" gribGetDouble'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CDouble) -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_double_element" gribGetDoubleElement'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> (C2HSImp.CInt -> ((C2HSImp.Ptr C2HSImp.CDouble) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_double_elements" grib_get_double_elements :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CInt) -> (C2HSImp.CLong -> ((C2HSImp.Ptr C2HSImp.CDouble) -> (IO C2HSImp.CInt)))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_string" grib_get_string :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_bytes" gribGetBytes'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CUChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_double_array" grib_get_double_array :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CDouble) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_get_long_array" grib_get_long_array :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CLong) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_copy_namespace" gribCopyNamespace'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr (GribHandle)) -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_set_long" gribSetLong'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> (C2HSImp.CLong -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_set_double" gribSetDouble'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> (C2HSImp.CDouble -> (IO C2HSImp.CInt)))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_set_string" grib_set_string :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_set_bytes" gribSetBytes'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CUChar) -> ((C2HSImp.Ptr CSize) -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_set_double_array" gribSetDoubleArray'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CDouble) -> (CSize -> (IO C2HSImp.CInt))))) foreign import ccall unsafe "Data/Grib/Raw/Value.chs.h grib_set_long_array" gribSetLongArray'_ :: ((C2HSImp.Ptr (GribHandle)) -> ((C2HSImp.Ptr C2HSImp.CChar) -> ((C2HSImp.Ptr C2HSImp.CLong) -> (CSize -> (IO C2HSImp.CInt)))))