HackMD/lib/utils.js

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JavaScript
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'use strict'
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const fs = require('fs')
const path = require('path')
exports.isSQLite = function isSQLite (sequelize) {
return sequelize.options.dialect === 'sqlite'
}
exports.getImageMimeType = function getImageMimeType (imagePath) {
var fileExtension = /[^.]+$/.exec(imagePath)
switch (fileExtension[0]) {
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case 'bmp':
return 'image/bmp'
case 'gif':
return 'image/gif'
case 'jpg':
case 'jpeg':
return 'image/jpeg'
case 'png':
return 'image/png'
case 'tiff':
return 'image/tiff'
default:
return undefined
}
}
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exports.isRevealTheme = function isRevealTheme (theme) {
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if (fs.existsSync(path.join(__dirname, '..', 'public', 'build', 'reveal.js', 'css', 'theme', theme + '.css'))) {
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return theme
}
return undefined
}