var fs = require('fs');
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var path = require('path');
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var pify = require('pify');
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var stat = pify(fs.stat);
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var readFile = pify(fs.readFile);
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var resolve = path.resolve;
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var cache = Object.create(null);
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function convert(content, encoding) {
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if (Buffer.isEncoding(encoding)) {
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return content.toString(encoding);
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}
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return content;
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}
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module.exports = function (path, encoding) {
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path = resolve(path);
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return stat(path).then(function (stats) {
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var item = cache[path];
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if (item && item.mtime.getTime() === stats.mtime.getTime()) {
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return convert(item.content, encoding);
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}
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return readFile(path).then(function (data) {
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cache[path] = {
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mtime: stats.mtime,
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content: data
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};
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return convert(data, encoding);
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});
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}).catch(function (err) {
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cache[path] = null;
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return Promise.reject(err);
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});
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};
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module.exports.sync = function (path, encoding) {
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path = resolve(path);
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try {
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var stats = fs.statSync(path);
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var item = cache[path];
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if (item && item.mtime.getTime() === stats.mtime.getTime()) {
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return convert(item.content, encoding);
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}
|
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var data = fs.readFileSync(path);
|
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cache[path] = {
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mtime: stats.mtime,
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content: data
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};
|
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return convert(data, encoding);
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} catch (err) {
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cache[path] = null;
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throw err;
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}
|
|
};
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module.exports.get = function (path, encoding) {
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path = resolve(path);
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if (cache[path]) {
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return convert(cache[path].content, encoding);
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}
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return null;
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};
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module.exports.clear = function () {
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cache = Object.create(null);
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};
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