Fully end to end encrypted anonymous chat program. Server only stores public key lookup for users and the encrypted messages. No credentials are transfered to the server, but kept in local browser storage. This allows 100% safe chatting.
https://safechat.ch
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58 lines
1.1 KiB
58 lines
1.1 KiB
var utils = require('../utils') |
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, nodes = require('../nodes') |
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, Image = require('./image'); |
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/** |
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* Return the width and height of the given `img` path. |
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* |
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* Examples: |
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* |
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* image-size('foo.png') |
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* // => 200px 100px |
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* |
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* image-size('foo.png')[0] |
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* // => 200px |
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* |
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* image-size('foo.png')[1] |
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* // => 100px |
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* |
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* Can be used to test if the image exists, |
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* using an optional argument set to `true` |
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* (without this argument this function throws error |
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* if there is no such image). |
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* |
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* Example: |
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* |
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* image-size('nosuchimage.png', true)[0] |
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* // => 0 |
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* |
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* @param {String} img |
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* @param {Boolean} ignoreErr |
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* @return {Expression} |
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* @api public |
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*/ |
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module.exports = function imageSize(img, ignoreErr) { |
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utils.assertType(img, 'string', 'img'); |
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try { |
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var img = new Image(this, img.string); |
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} catch (err) { |
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if (ignoreErr) { |
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return [new nodes.Unit(0), new nodes.Unit(0)]; |
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} else { |
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throw err; |
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} |
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} |
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// Read size |
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img.open(); |
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var size = img.size(); |
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img.close(); |
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// Return (w h) |
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var expr = []; |
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expr.push(new nodes.Unit(size[0], 'px')); |
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expr.push(new nodes.Unit(size[1], 'px')); |
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return expr; |
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};
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