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60 lines
2.0 KiB
60 lines
2.0 KiB
#!/usr/bin/env bash
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# Copyright (C) 2016 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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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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#
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# Nominally used to generate the "Version.java" file, but in theory could be used
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# for any super simple template generation as well.
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if [[ $# -lt 4 ]]; then
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echo "Usage: $(basename $0) <template-file> <template-variable> <value-file> <value-variable>" >&2
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echo ""
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echo 'For example, ./generate-version-file src/main/resources/org/testng/internal/VersionTemplateJava "@version@" kobalt/src/Build.kt "VERSION"'
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exit 1
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fi
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template_file="$1"
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template_variable="$2"
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value_file="$3"
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value_variable="$4"
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if ! [[ -f $template_file ]]; then
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echo "Error: Template file $template_file does not exist." >&2
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exit 1
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fi
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if ! [[ -f $value_file ]]; then
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echo "Error: Value file $value_File does not exist." >&2
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exit 1
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fi
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# Read a 'val VERSION = "SOME_VERSION"' from the file, trim down to $SOME_VERSION.
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stored_value="$(egrep "val[[:space:]]+$value_variable" "$value_file" | awk 'NF>1{print $NF}' | tr -d '"')"
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if [[ $? -ne 0 ]]; then
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echo "Error: Could not find value $value_variable in $value_file of syntax 'val $value_variable = \"SOME_VALUE\"'" >&2
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exit 1
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fi
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# Ensure that the template does indeed have @version@
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if ! grep --silent "$template_variable" "$template_file"; then
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echo "Error: Template file $template_file has no instances of template variable $template_variable." >&2
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exit 1
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fi
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set -e
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# Apply the template, replacing @version@ with the VERSION.
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sed -e "s:$template_variable:$stored_value:g" "$template_file"
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