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90 lines
2.6 KiB
90 lines
2.6 KiB
3 years ago
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'use strict';
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var utils = require('../utils');
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// internal
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var reEscComments = /\\#/g;
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// note that '^^' is used in place of escaped comments
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var reUnescapeComments = /\^\^/g;
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var reComments = /#.*$/;
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var reEscapeChars = /[.|\-[\]()\\]/g;
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var reAsterisk = /\*/g;
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module.exports = add;
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/**
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* Converts file patterns or regular expressions to nodemon
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* compatible RegExp matching rules. Note: the `rules` argument
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* object is modified to include the new rule and new RegExp
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*
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* ### Example:
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*
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* var rules = { watch: [], ignore: [] };
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* add(rules, 'watch', '*.js');
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* add(rules, 'ignore', '/public/');
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* add(rules, 'watch', ':(\d)*\.js'); // note: string based regexp
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* add(rules, 'watch', /\d*\.js/);
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*
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* @param {Object} rules containing `watch` and `ignore`. Also updated during
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* execution
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* @param {String} which must be either "watch" or "ignore"
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* @param {String|RegExp} the actual rule.
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*/
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function add(rules, which, rule) {
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if (!{ ignore: 1, watch: 1}[which]) {
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throw new Error('rules/index.js#add requires "ignore" or "watch" as the ' +
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'first argument');
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}
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if (Array.isArray(rule)) {
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rule.forEach(function (rule) {
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add(rules, which, rule);
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});
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return;
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}
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// support the rule being a RegExp, but reformat it to
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// the custom :<regexp> format that we're working with.
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if (rule instanceof RegExp) {
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// rule = ':' + rule.toString().replace(/^\/(.*?)\/$/g, '$1');
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utils.log.error('RegExp format no longer supported, but globs are.');
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return;
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}
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// remove comments and trim lines
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// this mess of replace methods is escaping "\#" to allow for emacs temp files
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// first up strip comments and remove blank head or tails
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rule = (rule || '').replace(reEscComments, '^^')
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.replace(reComments, '')
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.replace(reUnescapeComments, '#').trim();
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var regexp = false;
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if (typeof rule === 'string' && rule.substring(0, 1) === ':') {
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rule = rule.substring(1);
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utils.log.error('RegExp no longer supported: ' + rule);
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regexp = true;
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} else if (rule.length === 0) {
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// blank line (or it was a comment)
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return;
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}
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if (regexp) {
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// rules[which].push(rule);
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} else {
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// rule = rule.replace(reEscapeChars, '\\$&')
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// .replace(reAsterisk, '.*');
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rules[which].push(rule);
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// compile a regexp of all the rules for this ignore or watch
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var re = rules[which].map(function (rule) {
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return rule.replace(reEscapeChars, '\\$&')
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.replace(reAsterisk, '.*');
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}).join('|');
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// used for the directory matching
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rules[which].re = new RegExp(re);
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}
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}
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