74 lines
2.2 KiB
TypeScript
74 lines
2.2 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/** A parsed commit message. */
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export interface ParsedCommitMessage {
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header: string;
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body: string;
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bodyWithoutLinking: string;
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type: string;
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scope: string;
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subject: string;
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isFixup: boolean;
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isSquash: boolean;
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isRevert: boolean;
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}
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/** Regex determining if a commit is a fixup. */
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const FIXUP_PREFIX_RE = /^fixup! /i;
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/** Regex finding all github keyword links. */
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const GITHUB_LINKING_RE = /((closed?s?)|(fix(es)?(ed)?)|(resolved?s?))\s\#(\d+)/ig;
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/** Regex determining if a commit is a squash. */
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const SQUASH_PREFIX_RE = /^squash! /i;
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/** Regex determining if a commit is a revert. */
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const REVERT_PREFIX_RE = /^revert:? /i;
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/** Regex determining the scope of a commit if provided. */
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const TYPE_SCOPE_RE = /^(\w+)(?:\(([^)]+)\))?\:\s(.+)$/;
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/** Regex determining the entire header line of the commit. */
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const COMMIT_HEADER_RE = /^(.*)/i;
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/** Regex determining the body of the commit. */
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const COMMIT_BODY_RE = /^.*\n\n([\s\S]*)$/;
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/** Parse a full commit message into its composite parts. */
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export function parseCommitMessage(commitMsg: string): ParsedCommitMessage {
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let header = '';
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let body = '';
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let bodyWithoutLinking = '';
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let type = '';
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let scope = '';
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let subject = '';
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if (COMMIT_HEADER_RE.test(commitMsg)) {
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header = COMMIT_HEADER_RE.exec(commitMsg)![1]
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.replace(FIXUP_PREFIX_RE, '')
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.replace(SQUASH_PREFIX_RE, '');
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}
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if (COMMIT_BODY_RE.test(commitMsg)) {
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body = COMMIT_BODY_RE.exec(commitMsg)![1];
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bodyWithoutLinking = body.replace(GITHUB_LINKING_RE, '');
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}
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if (TYPE_SCOPE_RE.test(header)) {
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const parsedCommitHeader = TYPE_SCOPE_RE.exec(header)!;
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type = parsedCommitHeader[1];
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scope = parsedCommitHeader[2];
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subject = parsedCommitHeader[3];
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}
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return {
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header,
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body,
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bodyWithoutLinking,
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type,
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scope,
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subject,
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isFixup: FIXUP_PREFIX_RE.test(commitMsg),
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isSquash: SQUASH_PREFIX_RE.test(commitMsg),
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isRevert: REVERT_PREFIX_RE.test(commitMsg),
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};
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}
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