| 1 | const child_process = require('child_process');
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| 2 | const path = require('path');
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| 3 |
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| 4 |
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| 5 | function getBranch(tag, git) {
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| 6 | let branch = '';
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| 7 | if (tag === 'auto') {
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| 8 | try {
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| 9 | branch = child_process.execSync(
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| 10 | `git tag --sort -version:refname`,
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| 11 | { cwd: git }
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| 12 | ).toString().split('\n')[1];
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| 13 | } catch (e) {
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| 14 | throw new Error('Failed to get tag automatically, please specify manually by `tag:tagName` in `option.tag`');
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| 15 | }
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| 16 | } else if (/^(tag|branch):/.test(tag)) {
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| 17 | branch = tag.replace(/^(tag|branch):/, '');
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| 18 | }
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| 19 | return branch;
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| 20 | }
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| 21 |
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| 22 | exports = module.exports = function createDiff(option) {
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| 23 | let branch = getBranch(option.tag, option.git);
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| 24 | if (!branch) {
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| 25 | throw new Error('Invalid argument: `option.tag` must be auto|tag:tagName|branch:branchName');
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| 26 | }
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| 27 |
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| 28 | try {
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| 29 | child_process.execSync(
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| 30 | `git clone -l -b ${branch} ${option.git} ${option.dir} >& /dev/null`
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| 31 | );
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| 32 | } catch (e) {
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| 33 | throw new Error(`Git branch ${branch} not exist.`);
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| 34 | }
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| 35 |
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| 36 | console.log(`diff branch: ${branch}`);
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| 37 | return path.join(
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| 38 | option.dir,
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| 39 | option.root.replace(option.git, '')
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| 40 | );
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| 41 | };
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