Merge RFC4 (#1865)

This commit is the result of the squashing of rfc4_dev branch in a single
commit. It implements mostly RFC 4 related work.

* Grid handling:
  - remove obsolete and presumably unfinished implementation of grid catalog functionality
  - all grid functionality is in grids.cpp/.hpp
  - vertical and horizontal grid shift: rework to no longer load whole grid into memory
  - remove hgrids and vgrids member from PJ structure, and store them in hgridshift/vgridshift/deformation structures
  - build systems: add optional libtiff dependency. Must be explicitly disabled if not desired
  - add support for horizontal and vertical grids in GeoTIFF, if libtiff is available
  - add GenericShiftGridSet and GenericShiftGrid classes, relying on TIFF grids, that can be used for generic purpose grid-based adjustment
  - add a +proj=xyzgridshift method to perform geocentric translation by grid. Used for French NTF to RGF93 transformation using gr3df97a.tif grid
  - deformation: add support for +grids= for GeoTIFF grids
  - horizontal grid shift: fix failures on points slightly outside a subgrid (fixes #209)

* File management:
  - add a filemanager.cpp/.hpp to deal with file related work
  - test for legacy proj_api.h fileapi
  - proj.h: add proj_context_set_fileapi() and proj_context_set_sqlite3_vfs_name() (fixes #866)
  - add capability to read resource files from the user writable directory

* Network access:
  - build systems: add optional curl dependency
  - add a curl-based default implementation for network related functionality
  - proj.h: add C API to control network functionality, and optionaly provide network callbacks
  - add data/proj.ini with default settings
  - add a SQLite3 local cache of downloaded chunks
  - add proj_is_download_needed() and proj_download_file()

* Use Win32 Unicode APIs and expect all strings to be UTF-8 (fixes #1765)
  For backward compatibility, if PROJ_LIB content is found to be not UTF-8 or
  pointing to a non existing directory, then an attempt at interpretating it
  in the ANSI page encoding is done.
  proj_context_set_search_paths() now assumes strings to be in UTF-8, and
  functions returning paths will also return values in UTF-8.

1 files changed, 9 insertions, 9 deletions

diff --git a/test/unit/test_operation.cpp b/test/unit/test_operation.cpp
index b2c13b6c..8ee5814b 100644
--- a/test/unit/test_operation.cpp
+++ b/test/unit/test_operation.cpp
@@ -4832,7 +4832,7 @@ TEST(operation, geogCRS_to_geogCRS_context_concatenated_operation) {
 
     EXPECT_TRUE(nn_dynamic_pointer_cast<ConcatenatedOperation>(list[0]) !=
                 nullptr);
-    auto grids = list[0]->gridsNeeded(DatabaseContext::create());
+    auto grids = list[0]->gridsNeeded(DatabaseContext::create(), false);
     EXPECT_EQ(grids.size(), 1U);
 }
 
@@ -6508,7 +6508,7 @@ TEST(operation, transformation_height_to_PROJ_string) {
     EXPECT_EQ(transf->exportToPROJString(PROJStringFormatter::create().get()),
               "+proj=vgridshift +grids=egm08_25.gtx +multiplier=1");
 
-    auto grids = transf->gridsNeeded(DatabaseContext::create());
+    auto grids = transf->gridsNeeded(DatabaseContext::create(), false);
     ASSERT_EQ(grids.size(), 1U);
     auto gridDesc = *(grids.begin());
     EXPECT_EQ(gridDesc.shortName, "egm08_25.gtx");
@@ -6820,7 +6820,7 @@ TEST(operation, compoundCRS_with_boundGeogCRS_and_boundVerticalCRS_to_geogCRS) {
               "+step +proj=unitconvert +xy_in=rad +xy_out=deg "
               "+step +proj=axisswap +order=2,1");
 
-    auto grids = op->gridsNeeded(DatabaseContext::create());
+    auto grids = op->gridsNeeded(DatabaseContext::create(), false);
     EXPECT_EQ(grids.size(), 1U);
 
     auto opInverse = CoordinateOperationFactory::create()->createOperation(
@@ -8262,8 +8262,8 @@ TEST(operation, isPROJInstantiable) {
         auto transformation = Transformation::createGeocentricTranslations(
             PropertyMap(), GeographicCRS::EPSG_4269, GeographicCRS::EPSG_4326,
             1.0, 2.0, 3.0, {});
-        EXPECT_TRUE(
-            transformation->isPROJInstantiable(DatabaseContext::create()));
+        EXPECT_TRUE(transformation->isPROJInstantiable(
+            DatabaseContext::create(), false));
     }
 
     // Missing grid
@@ -8271,8 +8271,8 @@ TEST(operation, isPROJInstantiable) {
         auto transformation = Transformation::createNTv2(
             PropertyMap(), GeographicCRS::EPSG_4807, GeographicCRS::EPSG_4326,
             "foo.gsb", std::vector<PositionalAccuracyNNPtr>());
-        EXPECT_FALSE(
-            transformation->isPROJInstantiable(DatabaseContext::create()));
+        EXPECT_FALSE(transformation->isPROJInstantiable(
+            DatabaseContext::create(), false));
     }
 
     // Unsupported method
@@ -8283,8 +8283,8 @@ TEST(operation, isPROJInstantiable) {
                          PropertyMap(), std::vector<OperationParameterNNPtr>{}),
             std::vector<GeneralParameterValueNNPtr>{},
             std::vector<PositionalAccuracyNNPtr>{});
-        EXPECT_FALSE(
-            transformation->isPROJInstantiable(DatabaseContext::create()));
+        EXPECT_FALSE(transformation->isPROJInstantiable(
+            DatabaseContext::create(), false));
     }
 }