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ZyElite/depot_tools

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git-crrev-parse 1.97 KB
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#!/usr/bin/env bash
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This git extension converts a chromium commit number to its git commit hash.
# It accepts the following input formats:
#
# $ git crrev-parse Cr-Commit-Position: refs/heads/main@{#311769}
# $ git crrev-parse ' Cr-Commit-Position: refs/heads/main@{#311769}'
# $ git crrev-parse 'Cr-Commit-Position: refs/heads/main@{#311769}'
# $ git crrev-parse refs/heads/main@{#311769}
#
# It also works for branches (assuming you have branches in your local
# checkout):
#
# $ git crrev-parse refs/branch-heads/2278@{#2}
#
# If you don't specify a branch, refs/heads/main is assumed:
#
# $ git crrev-parse @{#311769}
# $ git crrev-parse 311769
# Developer note: this script makes heavy use of prefix/suffix/pattern
# substitution for bash variables. Refer to the "Parameter Expansion"
# section of the man page for bash.
while [ -n "$1" ]; do
if [[ "$1" = "Cr-Commit-Position:" ]] && [[ "$2" =~ .*@\{#[0-9][0-9]*\} ]]; then
commit_pos="$2"
shift
else
commit_pos="${1#*Cr-Commit-Position: }"
fi
ref="${commit_pos%@\{#*\}}"
if [ "$ref" = "$commit_pos" -o -z "$ref" ]; then
ref="refs/heads/main"
fi
remote_ref="${ref/refs\/heads/refs\/remotes\/origin}"
remote_ref="${remote_ref/refs\/branch-heads/refs\/remotes\/branch-heads}"
remote_ref="${remote_ref//\\}"
num="${commit_pos#*@\{\#}"
num="${num%\}}"
if [ -z "$ref" -o -z "$num" ]; then
git rev-parse "$1"
else
# When the ref is not specified on the command-line, accept either
# Cr-refs/heads/master@{#$NUM} or refs/heads/main@{#$NUM}.
if [[ "$ref" = "refs/heads/main" ]]; then
grep_str="^Cr-Commit-Position: refs/heads/(master|main)@\\{#$num\\}"
else
grep_str="^Cr-Commit-Position: $ref@\\{#$num\\}"
fi
git rev-list -n 1 --extended-regexp --grep="$grep_str" "$remote_ref"
fi
shift
done
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