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#!/usr/bin/env node |
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const argv = require('minimist')(process.argv.slice(2), { |
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string: ['filter'] |
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}); |
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const chalk = require('chalk'); |
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const exec = require('child_process').exec; |
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const FILTER_REGEXP = /^[ACDMRTUXB]*$/i; |
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const ADDED_REGEXP = /^(A.*)$/gm; |
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const DELETED_REGEXP = /^(D.*)$/gm; |
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const MODIFIED_REGEXP = /^(M.*)$/gm; |
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const RENAMED_REGEXP = /^([R|C].*)$/gm; |
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const help = !!argv.help; |
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const revisions = argv._ && typeof argv._[0] === 'string' && argv._[0].length > 0 ? argv._[0] : null; |
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const filter = argv.filter === undefined ? '' : FILTER_REGEXP.test(argv.filter) ? argv.filter : null; |
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const callHelpMsg = ` |
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Call this script with \`--help\` to see all options.`; |
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const revisionsMsg = ` |
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An argument of \`<revision>\`, \`<revision>..<revision>\`, or \`<revision>...<revision>\` is required to pass to \`git diff\`. |
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See https://git-scm.com/docs/git-diff for more info.` |
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const filterMsg = ` |
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\`--filter\` argument expects a value containing any of the following: |
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- Added (A) |
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- Copied (C) |
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- Deleted (D) |
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- Modified (M) |
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- Renamed (R) |
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- Type (i.e. regular file, symlink, submodule, …) changed (T) |
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- Unmerged (U) |
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- Unknown (X) |
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- Pairing Broken (B) |
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For example, pass 'ad' to exclude added and deleted results. |
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See 'diff-filter' documentation on https://git-scm.com/docs/git-diff for more info.`; |
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/** |
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* Handle `--help` |
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*/ |
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if (help) { |
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const helpMsg = ` |
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This script calls \`git diff --name-status\` and optionally adds \`--diff-filter\` when using \`--filter\`. |
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Examples: |
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npx ./index.js v1.0.0 |
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npx ./index.js v1.0.0 --filter mr |
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${revisionsMsg} |
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${filterMsg}`; |
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console.log(helpMsg) |
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process.exit(0); |
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} |
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/** |
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* Check revisions argument |
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*/ |
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if (!revisions) { |
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const revisionsErrorMsg = `${revisionsMsg}${callHelpMsg}` |
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emitError(TypeError(revisionsErrorMsg)); |
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} |
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/** |
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* Check `filter` argument |
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*/ |
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if (filter === null) { |
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const filterErrorMsg = `${filterMsg}${callHelpMsg}`; |
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emitError(TypeError(filterErrorMsg)); |
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} |
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/** |
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* Colorizes `git diff --name-status` terminal output |
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* @param {string} input |
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*/ |
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function gitNameStatusColorize(input) { |
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let output = input.replace(ADDED_REGEXP, chalk.green('$&')); |
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output = output.replace(DELETED_REGEXP, chalk.red('$&')); |
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output = output.replace(MODIFIED_REGEXP, chalk.cyan('$&')); |
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output = output.replace(RENAMED_REGEXP, chalk.yellow('$&')); |
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console.log(output) |
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} |
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/** |
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* Prints error in red and exists |
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* @param {any} err |
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*/ |
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function emitError(err) { |
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console.log(chalk.red.bold(err)); |
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process.exit(1); |
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} |
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/** |
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* Execute `git diff` |
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*/ |
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exec(`git diff --name-status ${revisions}` + (filter.length > 0 ? ` --diff-filter ${filter}` : ''), |
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(error, stdout, stderr) => { |
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if (error !== null) { |
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emitError(error, stderr); |
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} |
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gitNameStatusColorize(stdout); |
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}); |
