Fix string too long on Windows

Signed-off-by: David Laseca Perez <davidlaseca@eprosima.com>

Author: David-LP99

ddsrouter_yaml/CMakeLists.txt

@@ -80,6 +80,18 @@ compile_test_library(
 file(READ "${PROJECT_SOURCE_DIR}/../resources/configurations/ddsrouter_config_schema.json"
     DDSROUTER_CONFIG_SCHEMA_CONTENT)
 
+# Split into <=16000-char chunks to work around MSVC C2026 string literal size limit.
+# Adjacent string literals are concatenated by the compiler.
+string(LENGTH "${DDSROUTER_CONFIG_SCHEMA_CONTENT}" _schema_len)
+set(_chunk_size 16000)
+set(DDSROUTER_CONFIG_SCHEMA_CHUNKS "")
+set(_offset 0)
+while(_offset LESS _schema_len)
+    string(SUBSTRING "${DDSROUTER_CONFIG_SCHEMA_CONTENT}" ${_offset} ${_chunk_size} _chunk)
+    string(APPEND DDSROUTER_CONFIG_SCHEMA_CHUNKS "    R\"json(${_chunk})json\"\n")
+    math(EXPR _offset "${_offset} + ${_chunk_size}")
+endwhile()
+
 configure_file(
     "${PROJECT_SOURCE_DIR}/include/ddsrouter_yaml/DdsRouterConfigSchema.hpp.in"
     "${CMAKE_CURRENT_BINARY_DIR}/include/ddsrouter_yaml/DdsRouterConfigSchema.hpp"

ddsrouter_yaml/include/ddsrouter_yaml/DdsRouterConfigSchema.hpp.in

@@ -14,4 +14,5 @@
 
 #pragma once
 
-static const char* DDSROUTER_CONFIG_SCHEMA = R"json(@DDSROUTER_CONFIG_SCHEMA_CONTENT@)json";
+static const char* DDSROUTER_CONFIG_SCHEMA =
+@DDSROUTER_CONFIG_SCHEMA_CHUNKS@;