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* The MIT License (MIT)
*
* Copyright (c) 2019 Mark van Seventer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// Strict mode.
'use strict'
// Standard lib.
const path = require('path')
// Package modules.
const bubbleError = require('bubble-stream-error')
const sharp = require('sharp')
const urlTemplate = require('url-template')
// Local modules.
const queue = require('./queue')
// Configure.
const EXTENSIONS = {
dz: '', // Determined by tile.container.
jpeg: '.jpg',
png: '.png',
tiff: '.tiff',
webp: '.webp'
}
// Exports.
module.exports = {
// Convert a list of files.
files: (input, output) => {
const template = urlTemplate.parse(output) // Parse output template.
// Process files.
const promises = input.map((src) => {
// Destination.
src = path.resolve(src) // Absolute path.
let dest = template.expand(path.parse(src))
// Path separator for windows is encoded by url-template.
// @see https://github.com/vseventer/sharp-cli/issues/8
Iif (process.platform === 'win32') {
dest = dest.split('%5C').join(path.sep)
}
// Absolute path.
dest = path.resolve(dest)
// Process file.
const transformer = queue.drain(sharp(src))
// If output was not a template, re-use source name.
if (output === dest) {
const defaultExt = path.extname(src)
const desiredExt = transformer.options.formatOut
dest = path.format({
dir: output,
name: path.basename(src, defaultExt),
ext: desiredExt in EXTENSIONS ? EXTENSIONS[desiredExt] : defaultExt
})
}
// Save to file.
return transformer
.toFile(dest)
.then((info) => Object.assign(info, { src: src, path: dest }))
})
return Promise.all(promises)
},
// Convert a stream.
stream: (inStream, outStream) => {
return new Promise((resolve, reject) => {
const transformer = queue.drain(sharp())
// Pipe, and return as promise.
bubbleError(inStream, transformer, outStream)
inStream.pipe(transformer).pipe(outStream)
outStream.once('error', reject)
outStream.on('finish', resolve)
})
}
}
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