mirror of
https://github.com/firebase/firebase-ios-sdk
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68 lines
2.4 KiB
Bash
68 lines
2.4 KiB
Bash
#!/bin/bash
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# Copyright 2021 Google LLC
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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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# USAGE: git diff -U0 [base_commit] HEAD | get_diff_lines.sh
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#
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# This will generate a JSON output of changed files and their newly added
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# lines.
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oIFS=$IFS
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json_output="["
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# Concatenate files and line indices into a JSON file.
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concatenate() {
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local path=$1
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shift
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IFS=","
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local lines=$@
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echo "{\"file\": \"${path}\", \"added_lines\": [${lines[*]}]}"
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IFS=$oIFS
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}
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diff-lines() {
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local path=
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local line=
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local lines=()
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while read; do
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esc='\033'
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# Skip lines starting with "---". e.g. "--- a/.github/workflows/database.yml".
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# $REPLY, containing one line at a time, here and below are the default variable
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# of `read`.
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if [[ "$REPLY" =~ ---\ (a/)?.* ]]; then
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continue
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# Detect new changed files from `git diff`. e.g. "+++ b/.github/workflows/combine.yml".
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elif [[ "$REPLY" =~ ^\+\+\+\ (b/)?([^[:blank:]$esc]+).* ]]; then
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# Add the last changed file and its indices of added line to the output variable.
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if [ ${#lines[@]} -ne 0 ]; then
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json_output+="$(concatenate "${path}" ${lines[@]}),"
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fi
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# Refresh the array of line indices and file path for the new changed file.
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lines=()
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path=${BASH_REMATCH[2]}
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# Detect the started line index of a changed file, e.g. "@@ -53,0 +54,24 @@ jobs:" where "54" will be fetched.
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elif [[ "$REPLY" =~ @@\ -[0-9]+(,[0-9]+)?\ \+([0-9]+)(,[0-9]+)?\ @@.* ]]; then
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line=${BASH_REMATCH[2]}
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# Detect newly added lines. e.g. "+ storage-combine-integration:"
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elif [[ "$REPLY" =~ ^($esc\[[0-9;]+m)*([+]) ]]; then
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lines+=($line)
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((line++))
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fi
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done
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json_output+=$(concatenate "${path}" ${lines[@]} )
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}
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diff-lines
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json_output="${json_output}]"
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echo $json_output
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