110 lines
3.6 KiB
Bash
Executable File
110 lines
3.6 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2021 The Kubernetes Authors.
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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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changelog="$(git rev-parse --show-toplevel)/CHANGELOG.md"
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function util::changelog::has_release {
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local release=$1
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return $(grep -q "^# $release$" $changelog)
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}
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# find_release_start returns the number of the first line of the given release
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function util::changelog::find_release_start {
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local release=$1
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echo $(grep -n "^# $release$" $changelog | head -1 | cut -d: -f1)
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}
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# find_release_end returns the number of the last line of the given release
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function util::changelog::find_release_end {
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local release=$1
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local release_start=$(util::changelog::find_release_start $release)
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local next_release_index=0
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local releases=($(grep -n "^# " $changelog | cut -d: -f1))
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for i in "${!releases[@]}"; do
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if [[ "${releases[$i]}" = "$release_start" ]]; then
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next_release_index=$((i+1))
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break
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fi
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done
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# return the line before the next release
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echo $((${releases[${next_release_index}]}-1))
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}
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# has_section returns if the given section exists between start and end
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function util::changelog::has_section_in_range {
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local section="$1"
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local start=$2
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local end=$3
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local lines=($(grep -n "$section" "$changelog" | cut -d: -f1))
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for i in "${!lines[@]}"; do
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if [[ ${lines[$i]} -ge $start && ${lines[$i]} -le $end ]]; then
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return 0
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fi
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done
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return 1
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}
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# find_section returns the number of the first line of the given section
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function util::changelog::find_section_in_range {
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local section="$1"
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local start=$2
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local end=$3
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local line="0"
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local lines=($(grep -n "$section" "$changelog" | cut -d: -f1))
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for i in "${!lines[@]}"; do
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if [[ ${lines[$i]} -ge $start && ${lines[$i]} -le $end ]]; then
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line=${lines[$i]}
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break
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fi
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done
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echo $line
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}
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# write_changelog writes release_notes to section in target_release
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function util::changelog::write_changelog {
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local target_release="$1"
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local section="$2"
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local release_notes="$3"
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# find the place in the changelog that we want to edit
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local line_to_edit="1"
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if util::changelog::has_release $target_release; then
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# the target release exists
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release_first_line=$(util::changelog::find_release_start $target_release)
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release_last_line=$(util::changelog::find_release_end $target_release)
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if util::changelog::has_section_in_range "$section" "$release_first_line" "$release_last_line"; then
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# prepend to existing section
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line_to_edit=$(($(util::changelog::find_section_in_range "$section" "$release_first_line" "$release_last_line")+1))
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else
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# add a new section; plus 4 so that the section is placed below "Kubernetes API Version"
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line_to_edit=$(($(util::changelog::find_release_start $target_release)+4))
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release_notes="$section\n$release_notes\n"
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fi
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else
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# add a new release
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release_notes="# $target_release\n\nKubernetes API Version: To Be Updated\n\n$section\n$release_notes\n"
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fi
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echo "Writing the following release notes to CHANGELOG line $line_to_edit:"
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echo -e $release_notes
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# update changelog
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sed -i "${line_to_edit}i${release_notes}" $changelog
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}
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