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@@ -169,6 +169,16 @@ calling any of the functions provided by this module.
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some platforms. The ``ExternalData_NO_SYMLINKS`` variable may be set
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to disable use of symbolic links and enable use of copies instead.
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.. variable:: ExternalData_STATE_ROOT
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.. versionadded:: 4.4
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The ``ExternalData_STATE_ROOT`` variable may be set to place module-managed
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metadata outside ``ExternalData_BINARY_ROOT``. When set, ``ExternalData``
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stores its hash records under this directory while still materializing real
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data files under ``ExternalData_BINARY_ROOT``. By default, hash records
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continue to be placed next to the materialized data.
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.. variable:: ExternalData_OBJECT_STORES
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The ``ExternalData_OBJECT_STORES`` variable may be set to a list of local
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@@ -541,7 +551,7 @@ function(ExternalData_add_target target)
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list(GET tuple 2 exts)
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string(REPLACE "+" ";" exts_list "${exts}")
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list(GET exts_list 0 first_ext)
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set(stamp "-hash-stamp")
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_ExternalData_compute_stamp_file("${file}" stamp_file)
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if(NOT DEFINED "_ExternalData_FILE_${file}")
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set("_ExternalData_FILE_${file}" 1)
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get_property(added DIRECTORY PROPERTY "_ExternalData_FILE_${file}")
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@@ -554,10 +564,11 @@ function(ExternalData_add_target target)
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# List the real file as a second output in case it is a broken link.
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# The files must be listed in this order so CMake can hide from the
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# make tool that a symlink target may not be newer than the input.
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OUTPUT "${file}${stamp}" "${file}"
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OUTPUT "${stamp_file}" "${file}"
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# Run the data fetch/update script.
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COMMAND ${CMAKE_COMMAND} -Drelative_top=${CMAKE_BINARY_DIR}
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-Dfile=${file} -Dname=${name} -Dexts=${exts}
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-Dstamp_file=${stamp_file}
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-DExternalData_ACTION=fetch
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-DExternalData_SHOW_PROGRESS=${_ExternalData_add_target_SHOW_PROGRESS}
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-DExternalData_CONFIG=${config}
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@@ -566,7 +577,7 @@ function(ExternalData_add_target target)
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MAIN_DEPENDENCY "${name}${first_ext}"
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)
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endif()
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list(APPEND files "${file}${stamp}")
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list(APPEND files "${stamp_file}")
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endif()
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endforeach()
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@@ -636,12 +647,40 @@ function(_ExternalData_exact_regex regex_var string)
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endfunction()
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function(_ExternalData_atomic_write file content)
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get_filename_component(dir "${file}" DIRECTORY)
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file(MAKE_DIRECTORY "${dir}")
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_ExternalData_random(random)
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set(tmp "${file}.tmp${random}")
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file(WRITE "${tmp}" "${content}")
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file(RENAME "${tmp}" "${file}")
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endfunction()
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function(_ExternalData_compute_stamp_file file var_stamp)
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if(DEFINED ExternalData_STATE_ROOT AND NOT "${ExternalData_STATE_ROOT}" STREQUAL "")
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_ExternalData_compute_state_relative_path("${file}" relfile)
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set(stamp_file "${ExternalData_STATE_ROOT}/${relfile}-hash-stamp")
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else()
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set(stamp_file "${file}-hash-stamp")
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endif()
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set(${var_stamp} "${stamp_file}" PARENT_SCOPE)
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endfunction()
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function(_ExternalData_compute_state_relative_path file var_relfile)
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if(NOT ExternalData_BINARY_ROOT)
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set(top_bin "${CMAKE_BINARY_DIR}")
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else()
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set(top_bin "${ExternalData_BINARY_ROOT}")
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endif()
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file(RELATIVE_PATH relfile "${top_bin}" "${file}")
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if(IS_ABSOLUTE "${relfile}" OR "${relfile}" MATCHES "^\\.\\./")
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message(FATAL_ERROR
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"File path is not under ExternalData_BINARY_ROOT:\n"
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" file = ${file}\n"
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" ExternalData_BINARY_ROOT = ${top_bin}")
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endif()
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set(${var_relfile} "${relfile}" PARENT_SCOPE)
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endfunction()
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function(_ExternalData_link_content name var_ext)
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if("${ExternalData_LINK_CONTENT}" MATCHES "^(${_ExternalData_REGEX_ALGO})$")
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set(algo "${ExternalData_LINK_CONTENT}")
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@@ -1235,10 +1274,16 @@ if("${ExternalData_ACTION}" STREQUAL "fetch")
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message(FATAL_ERROR "${errorMsg}")
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endif()
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# Check if file already corresponds to the object.
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set(stamp "-hash-stamp")
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if(NOT DEFINED stamp_file OR "${stamp_file}" STREQUAL "")
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if(DEFINED ExternalData_STATE_ROOT AND NOT "${ExternalData_STATE_ROOT}" STREQUAL "")
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message(FATAL_ERROR
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"stamp_file must be provided when ExternalData_STATE_ROOT is set")
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endif()
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set(stamp_file "${file}-hash-stamp")
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endif()
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set(file_up_to_date 0)
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if(EXISTS "${file}" AND EXISTS "${file}${stamp}")
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file(READ "${file}${stamp}" f_hash)
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if(EXISTS "${file}" AND EXISTS "${stamp_file}")
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file(READ "${stamp_file}" f_hash)
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string(STRIP "${f_hash}" f_hash)
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if("${f_hash}" STREQUAL "${hash}")
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set(file_up_to_date 1)
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@@ -1253,7 +1298,7 @@ if("${ExternalData_ACTION}" STREQUAL "fetch")
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endif()
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# Atomically update the hash/timestamp file to record the object referenced.
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_ExternalData_atomic_write("${file}${stamp}" "${hash}\n")
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_ExternalData_atomic_write("${stamp_file}" "${hash}\n")
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elseif("${ExternalData_ACTION}" STREQUAL "local")
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foreach(v file name)
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if(NOT DEFINED "${v}")
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Arkadiusz Lachowicz