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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Based on apr's make_export.awk, which is
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# based on Ryan Bloom's make_export.pl
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/^#[ \t]*if(def)? (AP[RU]?_|!?defined).*/ {
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if (old_filename != FILENAME) {
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if (old_filename != "") printf("%s", line)
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old_filename = FILENAME
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macro_stack[macro_no++] = macro
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macro = substr($0, length($1)+2)
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line = line "#ifdef " macro "\n"
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line = line "#endif /* " macro " */\n"
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macro = macro_stack[--macro_no]
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function add_symbol (sym_name) {
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for (i = 0; i < count; i++) {
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line = line sym_name "\n"
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/^[ \t]*(extern[ \t]+)?AP[RU]?_DECLARE_DATA .*;$/ {
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gsub( /[*;]/, "", varname);
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gsub( /\[.*\]/, "", varname);