add s/switch/switch_/g step to proto custom command

Author: lia-viam

src/viam/api/CMakeLists.txt

@@ -113,6 +113,16 @@ if (VIAMCPPSDK_USE_DYNAMIC_PROTOS)
     )
   endif()
 
+  # List of names of non-compilable generated code
+  # The Switch component generates protobuf which uses `switch` as a namespace.
+  # This needs to be processed below.
+  set(VIAMCPPSDK_SWITCH_REPLACE_PATHS     
+    ${PROTO_GEN_DIR}/component/switch/v1/switch.grpc.pb.cc
+    ${PROTO_GEN_DIR}/component/switch/v1/switch.grpc.pb.h
+    ${PROTO_GEN_DIR}/component/switch/v1/switch.pb.cc
+    ${PROTO_GEN_DIR}/component/switch/v1/switch.pb.h
+  )
+
   add_custom_command(
     OUTPUT
     # Unfortunately, there isn't a good way to know in advance what
@@ -245,6 +255,9 @@ if (VIAMCPPSDK_USE_DYNAMIC_PROTOS)
     COMMAND ${BUF_COMMAND} generate ${BUF_GOOGLE_API_SOURCE} --template buf.gen.yaml --path google/rpc --path google/api
     COMMAND ${BUF_COMMAND} generate ${BUF_VIAM_GOUTILS_SOURCE} --template buf.gen.yaml
     COMMAND ${BUF_COMMAND} generate ${BUF_VIAM_API_SOURCE} --template buf.gen.yaml --path ${BUF_PROTO_COMPONENTS_JOINED}
+
+    # After generating the protos, include a step to invoke a search-and-replace for switch -> switch_ in the Switch component files
+    COMMAND ${CMAKE_COMMAND} "-DSWITCH_REPLACE_PATHS=\"${VIAMCPPSDK_SWITCH_REPLACE_PATHS}\"" -P ${CMAKE_CURRENT_SOURCE_DIR}/viamcppsdk_replace_switch.cmake 
     MAIN_DEPENDENCY buf.gen.yaml
   )
 

src/viam/api/viamcppsdk_replace_switch.cmake

@@ -0,0 +1,10 @@
+if (NOT SWITCH_REPLACE_PATHS)
+    message(FATAL_ERROR "Please provide SWITCH_REPLACE_PATHS argument to switch replace script")
+endif()
+
+foreach(SOURCE ${SWITCH_REPLACE_PATHS})
+    file(READ "${SOURCE}" _src_text)
+    string(REPLACE "namespace switch " "namespace switch_ " _src_text "${_src_text}")
+    string(REPLACE "::switch::" "::switch_::" _src_text "${_src_text}")
+    file(WRITE "${SOURCE}" "${_src_text}")
+endforeach()