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# Cross-platform recursive copy with exclusion support
#
# Required:
# COPY_SOURCE – source directory
# COPY_DEST – destination directory
#
# Optional:
# EXCLUDE_FILES – pipe-separated file patterns to exclude
# EXCLUDE_FOLDERS – pipe-separated folder patterns to exclude
if(NOT COPY_SOURCE OR NOT COPY_DEST)
message(FATAL_ERROR "COPY_SOURCE and COPY_DEST must be set.")
endif()
# Replace "|" with ";" to convert the exclusion patterns back into a list
if(EXCLUDE_FILES)
string(REPLACE "|" ";" EXCLUDE_FILES "${EXCLUDE_FILES}")
endif()
if(EXCLUDE_FOLDERS)
string(REPLACE "|" ";" EXCLUDE_FOLDERS "${EXCLUDE_FOLDERS}")
endif()
message(STATUS "Copying from ${COPY_SOURCE} to ${COPY_DEST}")
if(CMAKE_HOST_WIN32)
set(robocopy_args
"${COPY_SOURCE}" "${COPY_DEST}"
/S /MT /R:0 /W:0 /NP
)
if(EXCLUDE_FILES)
list(APPEND robocopy_args /XF ${EXCLUDE_FILES})
endif()
if(EXCLUDE_FOLDERS)
list(APPEND robocopy_args /XD ${EXCLUDE_FOLDERS})
endif()
execute_process(
COMMAND robocopy.exe ${robocopy_args}
RESULT_VARIABLE rc
)
if(rc GREATER 7) # Allows for "files copied" and "no files copied" cases, but treats actual errors as failures
message(FATAL_ERROR "robocopy failed (exit code ${rc})")
endif()
elseif(CMAKE_HOST_UNIX)
set(rsync_args -av)
foreach(pattern IN LISTS EXCLUDE_FILES)
list(APPEND rsync_args "--exclude=${pattern}")
endforeach()
foreach(pattern IN LISTS EXCLUDE_FOLDERS)
list(APPEND rsync_args "--exclude=${pattern}")
endforeach()
# Trailing slashes ensure rsync copies contents, not the directory itself
execute_process(
COMMAND rsync ${rsync_args} "${COPY_SOURCE}/" "${COPY_DEST}/"
RESULT_VARIABLE rs
)
if(rs GREATER 0) # Any non-zero exit code indicates an error
message(FATAL_ERROR "rsync failed (exit code ${rs})")
endif()
else()
message(FATAL_ERROR "Unsupported host platform for asset copying.")
endif()
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