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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'
// Package modules.
const yargs = require('yargs')
// Local modules.
const constants = require('./constants')
const pkg = require('../package.json')
const queue = require('./queue')
// Configure.
const IS_TEXT_TERMINAL = process.stdin.isTTY
// Options.
const _global = 'Global Options'
const optimize = 'Optimization Options'
const options = {
// Global options.
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#png
compressionLevel: {
alias: 'c',
desc: 'zlib compression level',
defaultDescription: 9,
group: _global,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#toformat
format: {
alias: 'f',
choices: [ 'input', ...constants.FORMAT ],
default: 'input',
desc: 'Force output to a given format',
group: _global,
nargs: 1
},
// @see https://sharp.pixelplumbing.com/en/stable/api-constructor/
input: {
alias: 'i',
defaultDescription: 'stdin',
demand: IS_TEXT_TERMINAL,
desc: 'Path to (an) image file(s)',
group: _global,
implies: 'output',
normalize: true,
type: 'array'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-input/#limitinputpixels
limitInputPixels: {
alias: 'l',
defaultDescription: 0x3FFF * 0x3FFF,
desc: 'Do not process input images where the number of pixels (width x height) exceeds this limit',
group: _global,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/
output: {
alias: 'o',
defaultDescription: 'stdout',
demand: IS_TEXT_TERMINAL,
desc: 'Directory or URI template to write the image files to',
group: _global,
nargs: 1,
normalize: true,
type: 'string'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#png
progressive: {
alias: 'p',
desc: 'Use progressive (interlace) scan',
group: _global,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#webp
quality: {
alias: 'q',
desc: 'Quality',
defaultDescription: '80',
group: _global,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#withmetadata
withMetadata: {
alias: 'm',
desc: 'Include all metadata (EXIF, XMP, IPTC) from the input image in the output image',
global: true,
group: _global,
type: 'boolean'
},
// Optimization options.
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#png
adaptiveFiltering: {
desc: 'Use adaptive row filtering',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#webp
alphaQuality: {
desc: 'Quality of alpha layer',
defaultDescription: '80',
group: optimize,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
chromaSubsampling: {
desc: 'Set to "4:4:4" to prevent chroma subsampling when quality <= 90',
defaultDescription: '4:2:0',
group: optimize,
nargs: 1,
type: 'string'
},
// @see https://sharp.dimens.io/en/stable/api-output/#png
colors: {
alias: 'colours',
defaultDescription: 256,
desc: 'Maximum number of palette entries',
group: optimize,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
compression: {
choices: constants.TIFF_COMPRESSION,
default: 'jpeg',
desc: 'Compression options',
group: optimize,
nargs: 1,
type: 'string'
},
// @see https://sharp.dimens.io/en/stable/api-output/#png
dither: {
desc: 'Level of Floyd-Steinberg error diffusion',
defaultDescription: '1.0',
group: optimize,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#webp
lossless: {
desc: 'Use lossless compression mode',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#webp
nearLossless: {
desc: 'use near_lossless compression mode',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
optimise: {
alias: 'optimize',
desc: 'Apply optimiseScans, overshootDeringing, and trellisQuantisation',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
optimiseCoding: {
alias: 'optimizeCoding',
default: true,
desc: 'Optimise Huffman coding tables',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
optimiseScans: {
alias: 'optimizeScans',
desc: 'Optimise progressive scans',
group: optimize,
implies: 'progressive',
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
overshootDeringing: {
desc: 'Apply overshoot deringing',
group: optimize,
type: 'boolean'
},
// @see https://sharp.dimens.io/en/stable/api-output/#png
palette: {
desc: 'Quantise to a palette-based image with alpha transparency support',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
predictor: {
choices: constants.TIFF_PREDICTOR,
default: 'horizontal',
desc: 'Compression predictor',
group: optimize,
nargs: 1,
type: 'string'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
pyramid: {
desc: 'Write an image pyramid',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
quantisationTable: {
alias: 'quantizationTable',
defaultDescription: '0',
desc: 'Quantization table to use',
group: optimize,
nargs: 1,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-input/#sequentialread
sequentialRead: {
desc: 'An advanced setting that switches the libvips access method to VIPS_ACCESS_SEQUENTIAL',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
squash: {
desc: 'Squash 8-bit images down to 1 bit',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
tileHeight: {
desc: 'Vertical tile size',
group: optimize,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
tileWidth: {
desc: 'Horizontal tile size',
group: optimize,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
trellisQuantisation: {
desc: 'Apply trellis quantisation',
group: optimize,
type: 'boolean'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
xres: {
defaultDescription: '1.0',
desc: 'Horizontal resolution',
group: optimize,
type: 'number'
},
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
yres: {
defaultDescription: '1.0',
desc: 'Vertical resolution',
group: optimize,
type: 'number'
}
}
// Configure.
const cli = yargs
.strict()
.usage('$0 <options> [command..]')
.options(options)
.example('$0 -i ./input.jpg -o ./out resize 300 200', 'out/input.jpg will be a 300 pixels wide and 200 pixels high image containing a scaled and cropped version of input.jpg')
.example('$0 -i ./input.jpg -o ./out -mq90 rotate 180 -- resize 300 -- flatten "#ff6600" -- overlayWith ./overlay.png --gravity southeast -- sharpen', 'out/input.jpg will be an upside down, 300px wide, alpha channel flattened onto orange background, composited with overlay.png with SE gravity, sharpened, with metadata, 90% quality version of input.jpg')
.epilog('For more information on available options, please visit https://sharp.pixelplumbing.com/')
.showHelpOnFail(false)
// Built-in options.
.help().alias('help', 'h')
.version(pkg.version).alias('version', 'v')
.group([ 'help', 'version' ], 'Misc. Options')
// Commands.
// Avoid `yargs.commandDir()` as it uses insertion order, not alphabetical.
.command(require('../cmd/channel-manipulation/bandbool'))
.command(require('../cmd/operations/blur'))
.command(require('../cmd/operations/boolean'))
.command(require('../cmd/compositing/composite'))
.command(require('../cmd/operations/convolve'))
.command(require('../cmd/channel-manipulation/ensure-alpha'))
.command(require('../cmd/resizing/extend'))
.command(require('../cmd/resizing/extract'))
.command(require('../cmd/channel-manipulation/extract'))
.command(require('../cmd/operations/flatten'))
.command(require('../cmd/operations/flip'))
.command(require('../cmd/operations/flop'))
.command(require('../cmd/operations/gamma'))
.command(require('../cmd/colour-manipulation/greyscale'))
.command(require('../cmd/channel-manipulation/join'))
.command(require('../cmd/operations/linear'))
.command(require('../cmd/operations/median'))
.command(require('../cmd/operations/modulate'))
.command(require('../cmd/operations/negate'))
.command(require('../cmd/operations/normalise'))
.command(require('../cmd/compositing/overlay-with'))
.command(require('../cmd/operations/recomb'))
.command(require('../cmd/channel-manipulation/remove-alpha'))
.command(require('../cmd/resizing/resize'))
.command(require('../cmd/operations/rotate'))
.command(require('../cmd/operations/sharpen'))
.command(require('../cmd/operations/threshold'))
.command(require('../cmd/colour-manipulation/tint'))
.command(require('../cmd/output'))
.command(require('../cmd/colour-manipulation/tocolourspace'))
.command(require('../cmd/resizing/trim'))
// Override `cli.parse` to handle global options.
const originalParse = cli.parse
cli.parse = (argv, context, callback) => {
// Context is optional.
if (typeof context === 'function') {
callback = context
context = { }
}
// Parse and return the arguments.
return originalParse(argv, context, (err, args, output) => {
// Handle arguments.
// NOTE Use queue.unshift to apply global options first.
Eif (args !== null) {
// Require at least one input file.
// NOTE: check here b/c https://github.com/yargs/yargs/issues/403
if (args.input && args.input.length === 0) {
err = new Error('Not enough arguments following: i, input')
}
// Global Options.
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#toformat
if (args.format !== options.format.default) {
queue.unshift([ 'format', (sharp) => sharp.toFormat(args.format) ])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#jpeg
if (
args.chromaSubsampling ||
args.optimise ||
args.optimiseCoding !== true ||
args.optimiseScans ||
args.overshootDeringing ||
args.progressive ||
args.quantisationTable ||
args.quality ||
args.trellisQuantisation
) {
queue.unshift([ 'jpeg', (sharp) => {
return sharp.jpeg({
chromaSubsampling: args.chromaSubsampling,
force: false,
optimiseCoding: args.optimiseCoding,
optimiseScans: args.optimise || args.optimiseScans,
overshootDeringing: args.optimise || args.overshootDeringing,
progressive: args.progressive,
quality: args.quality,
quantisationTable: args.quantisationTable,
trellisQuantisation: args.optimise || args.trellisQuantisation
})
}])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-input/#limitinputpixels
if (undefined !== args.limitInputPixels) {
queue.unshift([ 'limitInputPixels', (sharp) => sharp.limitInputPixels(args.limitInputPixels) ])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#png
if (args.adaptiveFiltering || args.colors || args.compressionLevel ||
args.dither || args.palette || args.progressive) {
queue.unshift([ 'png', (sharp) => {
return sharp.png({
adaptiveFiltering: args.adaptiveFiltering,
colors: args.colors,
compressionLevel: args.compressionLevel,
dither: args.dither,
force: false,
palette: args.palette,
progressive: args.progressive
})
}])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-input/#sequentialread
if (args.sequentialRead) {
queue.unshift([ 'sequentialRead', (sharp) => sharp.sequentialRead() ])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tiff
if (args.compression !== options.compression.default ||
args.predictor !== options.predictor.default ||
args.pyramid || args.quality || args.squash || args.tileHeight ||
args.tileWidth || args.xres || args.yres) {
queue.unshift([ 'tiff', (sharp) => {
return sharp.tiff({
compression: args.compression,
force: false,
predictor: args.predictor,
pyramid: args.pyramid,
quality: args.quality,
squash: args.squash,
tile: args.tileWidth !== undefined || args.tileHeight !== undefined,
tileHeight: args.tileHeight || args.tileWidth,
tileWidth: args.tileWidth || args.tileHeight,
xres: args.xres,
yres: args.yres
})
}])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#webp
if (args.alphaQuality || args.quality || args.lossless || args.nearLossless) {
queue.unshift([ 'webp', (sharp) => {
return sharp.webp({
alphaQuality: args.alphaQuality,
force: false,
lossless: args.lossless,
nearLossless: args.nearLossless,
quality: args.quality
})
}])
}
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#withmetadata
if (args.withMetadata) {
queue.unshift([ 'withMetadata', (sharp) => sharp.withMetadata() ])
}
}
// Invoke original.
return callback(err, args, output)
})
}
// Exports.
module.exports = cli
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