53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
'use strict';
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var probeStream = require('./stream');
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var probeHttp = require('./http');
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var nextTick = require('next-tick');
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var merge = require('deepmerge');
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/* eslint-disable consistent-return */
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module.exports = function get_image_size(src, options, callback) {
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if (typeof src.on === 'function' && typeof src.emit === 'function') {
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// looks like an EventEmitter, treating it as a stream
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callback = options;
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if (!callback) return probeStream(src);
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probeStream(src)
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.then(function (size) { nextTick(callback.bind(null, null, size)); })
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.catch(function (err) { nextTick(callback.bind(null, err)); });
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return;
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}
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// HTTP (not stream)
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if (typeof src === 'string') {
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// `probe(string [, options, callback])`
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if (typeof options === 'function') {
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callback = options;
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options = {};
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}
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options = options || {};
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} else {
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// Legacy style, `probe(object [, callback])`
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callback = options;
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options = merge({}, src, { clone: true });
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src = options.url;
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delete options.url;
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}
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if (!callback) return probeHttp(src, options);
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probeHttp(src, options)
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.then(function (size) { nextTick(callback.bind(null, null, size)); })
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.catch(function (err) { nextTick(callback.bind(null, err)); });
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};
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module.exports.parsers = require('./lib/parsers_stream');
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module.exports.sync = require('./sync');
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module.exports.Error = require('./lib/common').ProbeError;
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