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support paths with blanks and avoid race condition when updating potentials

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This commit is contained in:
Axel Kohlmeyer
2022-09-02 21:33:30 -04:00
parent 03f319604f
commit f30fba0061
1 changed files with 6 additions and 4 deletions
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10
cmake/Modules/LAMMPSUtils.cmake
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@ -110,14 +110,16 @@ function(FetchPotentials pkgfolder potfolder)
math(EXPR plusone "${blank}+1")
string(SUBSTRING ${line} 0 ${blank} pot)
string(SUBSTRING ${line} ${plusone} -1 sum)
if(EXISTS ${LAMMPS_POTENTIALS_DIR}/${pot})
if(EXISTS "${LAMMPS_POTENTIALS_DIR}/${pot}")
file(MD5 "${LAMMPS_POTENTIALS_DIR}/${pot}" oldsum)
endif()
if(NOT sum STREQUAL oldsum)
message(STATUS "Checking external potential ${pot} from ${LAMMPS_POTENTIALS_URL}")
file(DOWNLOAD "${LAMMPS_POTENTIALS_URL}/${pot}.${sum}" "${CMAKE_BINARY_DIR}/${pot}"
message(STATUS "Downloading external potential ${pot} from ${LAMMPS_POTENTIALS_URL}")
string(MD5 TMP_EXT "${CMAKE_BINARY_DIR}")
file(DOWNLOAD "${LAMMPS_POTENTIALS_URL}/${pot}.${sum}" "${CMAKE_BINARY_DIR}/${pot}.${TMP_EXT}"
EXPECTED_HASH MD5=${sum} SHOW_PROGRESS)
file(COPY "${CMAKE_BINARY_DIR}/${pot}" DESTINATION ${LAMMPS_POTENTIALS_DIR})
file(COPY "${CMAKE_BINARY_DIR}/${pot}.${TMP_EXT}" DESTINATION "${LAMMPS_POTENTIALS_DIR}")
file(RENAME "${LAMMPS_POTENTIALS_DIR}/${pot}.${TMP_EXT}" "${LAMMPS_POTENTIALS_DIR}/${pot}")
endif()
endforeach()
endif()