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# Copyright (c) 2015, 2025, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is designed to work with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation. The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have either included with
# the program or referenced in the documentation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Parameters:
# TARGET_DIR - path where "protobuf_lite" directory will be created
# PROTO_FILE - path to proto file being converted to protobuf-lite version
# PROTO_FILE_FLAGS - (optional) comma-separated list of flags used for file processing:
# "// ifdef FLAG: ..." is replaced with "..." if "FLAG" is defined
GET_FILENAME_COMPONENT(PROTO_FILE_WD ${PROTO_FILE} NAME)
FILE(READ ${PROTO_FILE} PROTO_FILE_CONTENTS)
IF(PROTO_FILE_FLAGS)
STRING(REPLACE "," "|" PROTO_FILE_FLAGS ${PROTO_FILE_FLAGS})
FOREACH(LINE ${PROTO_FILE_CONTENTS})
STRING(REGEX REPLACE
"([\\t ]*)//[\\t ]*ifdef[\\t ]+(${PROTO_FILE_FLAGS})[\\t ]*:[\\t ]*(.*)" "\\1\\3"
LINE ${LINE}
)
LIST(APPEND NEW_PROTO_FILE_CONTENTS "${LINE}")
ENDFOREACH()
ELSE()
SET(NEW_PROTO_FILE_CONTENTS ${PROTO_FILE_CONTENTS})
ENDIF()
STRING(REGEX REPLACE
"//[\\t ]+ifndef[\\t ]+${PROTO_FILE_FLAGS}.*//[\\t ]+endif[\\t ]*" ""
NEW_PROTO_FILE_CONTENTS "${NEW_PROTO_FILE_CONTENTS}")
STRING(REGEX REPLACE
"(\r*\n)([^\r\n]*//[\\t ]+comment_out_if[\\t ]+${PROTO_FILE_FLAGS})" "\\1// \\2"
NEW_PROTO_FILE_CONTENTS "${NEW_PROTO_FILE_CONTENTS}")
FILE(MAKE_DIRECTORY "${TARGET_DIR}")
FILE(WRITE "${TARGET_DIR}/${PROTO_FILE_WD}" "${NEW_PROTO_FILE_CONTENTS}")
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