GRIB lightweight clone: Add test

tests/CMakeLists.txt

@@ -17,6 +17,7 @@ list(APPEND test_c_bins
     grib_indexing
     grib_fieldset
     grib_multi_from_message
+    grib_clone_lightweight
     grib_read_index
     unit_tests
     bufr_keys_iter
@@ -171,6 +172,7 @@ if( HAVE_BUILD_TOOLS )
         grib_headers_only
         grib_unpack_subarray
         grib_count
+        grib_clone_lightweight
         bufr_templates
         bufr_dump_data
         bufr_dump_descriptors

tests/grib_clone_lightweight.cc

@@ -0,0 +1,86 @@
+/*
+ * (C) Copyright 2005- ECMWF.
+ *
+ * This software is licensed under the terms of the Apache Licence Version 2.0
+ * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
+ * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
+ */
+#include <stdio.h>
+#include "eccodes.h"
+#undef NDEBUG
+#include <assert.h>
+
+static void usage(const char* app)
+{
+    fprintf(stderr, "Usage is: %s input_file ouput_file\n", app);
+}
+
+int main(int argc, char* argv[])
+{
+    FILE* in                    = NULL;
+    FILE* out                   = NULL;
+    codes_handle* source_handle = NULL;
+    const void* buffer          = NULL;
+    int err                     = 0;
+
+    long totalLength_src = 0, totalLength_dst = 0;
+    long edition = 0;
+    long dataSectionLength_src = 0, dataSectionLength_dst = 0;
+    long bitmapPresent_dst = 0, isConstant = 0;
+    size_t messageLength_src = 0, messageLength_dst = 0;
+
+    if (argc != 3) {
+        usage(argv[0]);
+        return 1;
+    }
+
+    in  = fopen(argv[1], "rb");
+    assert(in);
+    out = fopen(argv[2], "wb");
+    assert(out);
+
+    while ((source_handle = codes_handle_new_from_file(0, in, PRODUCT_GRIB, &err)) != NULL) {
+        codes_handle* clone_handle = codes_handle_clone_lightweight(source_handle);
+        assert(clone_handle);
+
+        CODES_CHECK(codes_get_message(source_handle, &buffer, &messageLength_src), 0);
+        CODES_CHECK(codes_get_message(clone_handle, &buffer, &messageLength_dst), 0);
+        assert( messageLength_src > messageLength_dst );
+
+        CODES_CHECK(codes_get_long(source_handle, "totalLength", &totalLength_src), 0);
+        CODES_CHECK(codes_get_long(clone_handle, "totalLength", &totalLength_dst), 0);
+        assert(totalLength_src > totalLength_dst);
+
+        CODES_CHECK(codes_get_long(source_handle, "edition", &edition), 0);
+        if (edition == 1) {
+            CODES_CHECK(codes_get_long(source_handle, "section4Length", &dataSectionLength_src), 0);
+            CODES_CHECK(codes_get_long(clone_handle, "section4Length", &dataSectionLength_dst), 0);
+        } else if (edition == 2) {
+            CODES_CHECK(codes_get_long(source_handle, "section7Length", &dataSectionLength_src), 0);
+            CODES_CHECK(codes_get_long(clone_handle, "section7Length", &dataSectionLength_dst), 0);
+        }
+        //printf("sectionLengths: %ld %ld\n", dataSectionLength_src, dataSectionLength_dst);
+        assert( dataSectionLength_src > dataSectionLength_dst );
+
+        codes_get_long(clone_handle, "bitmapPresent", &bitmapPresent_dst);
+        assert(bitmapPresent_dst == 0);
+        codes_get_long(clone_handle, "isConstant", &isConstant);
+        assert(isConstant == 1);
+
+        /* write out the cloned buffer */
+        if (fwrite(buffer, 1, messageLength_dst, out) != messageLength_dst) {
+            perror(argv[1]);
+            return 1;
+        }
+        codes_handle_delete(clone_handle);
+        codes_handle_delete(source_handle);
+    }
+
+    fclose(out);
+    fclose(in);
+
+    printf("All OK\n");
+    return 0;
+}

tests/grib_clone_lightweight.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+# (C) Copyright 2005- ECMWF.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
+# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
+#
+
+. ./include.ctest.sh
+
+label="grib_clone_lightweight_test"
+temp=temp.$label.grib
+
+inputs="
+  sst_globus0083.grib
+  sample.grib2
+  mixed.grib
+"
+
+for f in $inputs; do
+    infile=$data_dir/$f
+    rm -f $temp
+    $EXEC ${test_dir}/grib_clone_lightweight $infile $temp
+    ${tools_dir}/grib_compare -H -b totalLength $infile $temp
+done
+
+# Clean up
+rm -f $temp