remove deps

DESCRIPTION

@@ -1,9 +1,12 @@
 Package: dsn
-Title: Data Source Name Helpers for Use With GDAL
-Version: 0.0.1.9010
+Title: Data Source Name and Description Helpers for Use With 'GDAL'
+Version: 0.0.1.9011
 Authors@R: 
-    person("Michael", "Sumner", , "[email protected]", role = c("aut", "cre"))
-Description: Simple helpers for GDAL data source names (DSN), for prefix and suffix and other handling. 
+ c(person("Michael", "Sumner", , "[email protected]", role = c("aut", "cre")), 
+      person("Matt", "Dowle", role = "ctb", comment = "wrote the source code used here in C_addr, originally in data.table"))
+Description: Simple helpers for 'GDAL' data source names ('DSN'), prefix and 
+ suffix and other handling. 'GDAL' is the Geospatial Data Abstraction Library, 
+ not used by this package directly. 
 License: MIT + file LICENSE
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)

NAMESPACE

@@ -13,3 +13,4 @@ export(unvsicurl)
 export(vrtcon)
 export(vsicurl)
 importFrom(lobstr,obj_addr)
+useDynLib(dsn, .registration = TRUE)

NEWS.md

@@ -1,8 +1,10 @@
 # dev
 
+* New internal C_addr, to replace lobstr import. 
+
 * `vsicurl()` gains pc_url_signing with the `sign` arg (GDAL >= 3.5). 
 
-* All data source functions have been removed to spatial.datasources. 
+* All data source functions have been removed to hypertidy/sds, so countrycode no longer needed. 
 
 * New `nsdic_seaice()` for the GeoTIFF images. 
 

R/dsn-package.R

@@ -0,0 +1,6 @@
+#' @keywords internal
+"_PACKAGE"
+## usethis namespace: start
+#' @useDynLib dsn, .registration = TRUE
+## usethis namespace: end
+NULL

R/mem.R

@@ -46,7 +46,7 @@ mem <- function(x, extent = NULL, projection = "") {
   offset <- c(Int32 = 4, Float64 = 8, Byte = 1)[type]
   gt <- ext_dim(extent, dimension)
 
-  addr <- as.double(lobstr::obj_addr(x)) + 6 * offset
+  addr <- as.double(addr(x)) + 6 * offset
 
   spatialref <- ""
 
@@ -60,3 +60,20 @@ mem <- function(x, extent = NULL, projection = "") {
   dsn
 
 }
+
+
+
+#' Get address of object
+#'
+#' This is primarily for use by mem().
+#'
+#' Adapted from data.table::address
+#'
+#' @param x object to get address of
+#'
+#' @return address as a string
+#'
+#' @noRd
+addr <- function(x) {
+    .Call("C_addr", x = x, PACKAGE = "dsn")
+}

src/.gitignore

@@ -0,0 +1,3 @@
+*.o
+*.so
+*.dll

src/addr.c

@@ -0,0 +1,9 @@
+#include <Rinternals.h>
+
+SEXP C_addr(SEXP x)
+{
+  // A better way than : http://stackoverflow.com/a/10913296/403310
+  char buffer[32];
+  snprintf(buffer, 32, "%p", (void *)x);
+  return(Rf_mkString(buffer));
+}

src/init.c

@@ -0,0 +1,17 @@
+#include <Rinternals.h>
+#include <R_ext/Rdynload.h>
+
+
+
+/* .Call calls */
+extern SEXP C_addr(SEXP x);
+
+static const R_CallMethodDef CallEntries[] = {
+    {"C_addr", (DL_FUNC) &C_addr, 1},
+    {NULL, NULL, 0}
+};
+
+void R_init_addr(DllInfo *dll) {
+    R_registerRoutines(dll, NULL, CallEntries, NULL, NULL);
+    R_useDynamicSymbols(dll, FALSE);
+}