/
preProcessPattern.js
148 lines (118 loc) · 4.13 KB
/
preProcessPattern.js
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import path from 'path';
import isGlob from 'is-glob';
import escape from './utils/escape';
import isObject from './utils/isObject';
import { stat } from './utils/promisify';
// https://www.debuggex.com/r/VH2yS2mvJOitiyr3
const isTemplateLike = /(\[ext\])|(\[name\])|(\[path\])|(\[folder\])|(\[emoji(:\d+)?\])|(\[(\w+:)?(hash|contenthash)(:\w+)?(:\d+)?\])|(\[\d+\])/;
/* eslint-disable no-param-reassign */
export default function preProcessPattern(globalRef, pattern) {
const {
info,
debug,
warning,
context,
inputFileSystem,
fileDependencies,
contextDependencies,
compilation,
} = globalRef;
pattern =
typeof pattern === 'string'
? {
from: pattern,
}
: Object.assign({}, pattern);
if (pattern.from === '') {
throw new Error('[copy-webpack-plugin] path "from" cannot be empty string');
}
pattern.to = pattern.to || '';
pattern.context = pattern.context || context;
if (!path.isAbsolute(pattern.context)) {
pattern.context = path.join(context, pattern.context);
}
pattern.ignore = globalRef.ignore.concat(pattern.ignore || []);
info(`processing from: '${pattern.from}' to: '${pattern.to}'`);
switch (true) {
// if toType already exists
case !!pattern.toType:
break;
case isTemplateLike.test(pattern.to):
pattern.toType = 'template';
break;
case path.extname(pattern.to) === '' || pattern.to.slice(-1) === '/':
pattern.toType = 'dir';
break;
default:
pattern.toType = 'file';
}
debug(`determined '${pattern.to}' is a '${pattern.toType}'`);
// If we know it's a glob, then bail early
if (isObject(pattern.from) && pattern.from.glob) {
pattern.fromType = 'glob';
const globOptions = Object.assign({}, pattern.from);
delete globOptions.glob;
pattern.glob = escape(pattern.context, pattern.from.glob);
pattern.globOptions = globOptions;
pattern.absoluteFrom = path.resolve(pattern.context, pattern.from.glob);
return Promise.resolve(pattern);
}
if (path.isAbsolute(pattern.from)) {
pattern.absoluteFrom = pattern.from;
} else {
pattern.absoluteFrom = path.resolve(pattern.context, pattern.from);
}
debug(
`determined '${pattern.from}' to be read from '${pattern.absoluteFrom}'`
);
const noStatsHandler = () => {
// If from doesn't appear to be a glob, then log a warning
if (isGlob(pattern.from) || pattern.from.indexOf('*') !== -1) {
pattern.fromType = 'glob';
pattern.glob = escape(pattern.context, pattern.from);
// We need to add context directory as dependencies to avoid problems when new files added in directories
// when we already in watch mode and this directories are not in context dependencies
contextDependencies.add(pattern.context);
} else {
const msg = `unable to locate '${pattern.from}' at '${
pattern.absoluteFrom
}'`;
const warningMsg = `[copy-webpack-plugin] ${msg}`;
// only display the same message once
if (compilation.errors.indexOf(warningMsg) === -1) {
warning(msg);
compilation.errors.push(warningMsg);
}
pattern.fromType = 'nonexistent';
}
};
return stat(inputFileSystem, pattern.absoluteFrom)
.catch(() => noStatsHandler())
.then((stats) => {
if (!stats) {
noStatsHandler();
return pattern;
}
if (stats.isDirectory()) {
contextDependencies.add(pattern.absoluteFrom);
pattern.fromType = 'dir';
pattern.context = pattern.absoluteFrom;
pattern.glob = escape(pattern.absoluteFrom, '**/*');
pattern.absoluteFrom = path.join(pattern.absoluteFrom, '**/*');
pattern.globOptions = {
dot: true,
};
} else if (stats.isFile()) {
fileDependencies.add(pattern.absoluteFrom);
pattern.fromType = 'file';
pattern.context = path.dirname(pattern.absoluteFrom);
pattern.glob = escape(pattern.absoluteFrom);
pattern.globOptions = {
dot: true,
};
} else if (!pattern.fromType) {
info(`Unrecognized file type for ${pattern.from}`);
}
return pattern;
});
}