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- 'use strict'
- let { nanoid } = require('nanoid/non-secure')
- let { isAbsolute, resolve } = require('path')
- let { SourceMapConsumer, SourceMapGenerator } = require('source-map-js')
- let { fileURLToPath, pathToFileURL } = require('url')
- let CssSyntaxError = require('./css-syntax-error')
- let PreviousMap = require('./previous-map')
- let terminalHighlight = require('./terminal-highlight')
- let fromOffsetCache = Symbol('fromOffsetCache')
- let sourceMapAvailable = Boolean(SourceMapConsumer && SourceMapGenerator)
- let pathAvailable = Boolean(resolve && isAbsolute)
- class Input {
- constructor(css, opts = {}) {
- if (
- css === null ||
- typeof css === 'undefined' ||
- (typeof css === 'object' && !css.toString)
- ) {
- throw new Error(`PostCSS received ${css} instead of CSS string`)
- }
- this.css = css.toString()
- if (this.css[0] === '\uFEFF' || this.css[0] === '\uFFFE') {
- this.hasBOM = true
- this.css = this.css.slice(1)
- } else {
- this.hasBOM = false
- }
- if (opts.from) {
- if (
- !pathAvailable ||
- /^\w+:\/\//.test(opts.from) ||
- isAbsolute(opts.from)
- ) {
- this.file = opts.from
- } else {
- this.file = resolve(opts.from)
- }
- }
- if (pathAvailable && sourceMapAvailable) {
- let map = new PreviousMap(this.css, opts)
- if (map.text) {
- this.map = map
- let file = map.consumer().file
- if (!this.file && file) this.file = this.mapResolve(file)
- }
- }
- if (!this.file) {
- this.id = '<input css ' + nanoid(6) + '>'
- }
- if (this.map) this.map.file = this.from
- }
- error(message, line, column, opts = {}) {
- let endColumn, endLine, result
- if (line && typeof line === 'object') {
- let start = line
- let end = column
- if (typeof start.offset === 'number') {
- let pos = this.fromOffset(start.offset)
- line = pos.line
- column = pos.col
- } else {
- line = start.line
- column = start.column
- }
- if (typeof end.offset === 'number') {
- let pos = this.fromOffset(end.offset)
- endLine = pos.line
- endColumn = pos.col
- } else {
- endLine = end.line
- endColumn = end.column
- }
- } else if (!column) {
- let pos = this.fromOffset(line)
- line = pos.line
- column = pos.col
- }
- let origin = this.origin(line, column, endLine, endColumn)
- if (origin) {
- result = new CssSyntaxError(
- message,
- origin.endLine === undefined
- ? origin.line
- : { column: origin.column, line: origin.line },
- origin.endLine === undefined
- ? origin.column
- : { column: origin.endColumn, line: origin.endLine },
- origin.source,
- origin.file,
- opts.plugin
- )
- } else {
- result = new CssSyntaxError(
- message,
- endLine === undefined ? line : { column, line },
- endLine === undefined ? column : { column: endColumn, line: endLine },
- this.css,
- this.file,
- opts.plugin
- )
- }
- result.input = { column, endColumn, endLine, line, source: this.css }
- if (this.file) {
- if (pathToFileURL) {
- result.input.url = pathToFileURL(this.file).toString()
- }
- result.input.file = this.file
- }
- return result
- }
- fromOffset(offset) {
- let lastLine, lineToIndex
- if (!this[fromOffsetCache]) {
- let lines = this.css.split('\n')
- lineToIndex = new Array(lines.length)
- let prevIndex = 0
- for (let i = 0, l = lines.length; i < l; i++) {
- lineToIndex[i] = prevIndex
- prevIndex += lines[i].length + 1
- }
- this[fromOffsetCache] = lineToIndex
- } else {
- lineToIndex = this[fromOffsetCache]
- }
- lastLine = lineToIndex[lineToIndex.length - 1]
- let min = 0
- if (offset >= lastLine) {
- min = lineToIndex.length - 1
- } else {
- let max = lineToIndex.length - 2
- let mid
- while (min < max) {
- mid = min + ((max - min) >> 1)
- if (offset < lineToIndex[mid]) {
- max = mid - 1
- } else if (offset >= lineToIndex[mid + 1]) {
- min = mid + 1
- } else {
- min = mid
- break
- }
- }
- }
- return {
- col: offset - lineToIndex[min] + 1,
- line: min + 1
- }
- }
- mapResolve(file) {
- if (/^\w+:\/\//.test(file)) {
- return file
- }
- return resolve(this.map.consumer().sourceRoot || this.map.root || '.', file)
- }
- origin(line, column, endLine, endColumn) {
- if (!this.map) return false
- let consumer = this.map.consumer()
- let from = consumer.originalPositionFor({ column, line })
- if (!from.source) return false
- let to
- if (typeof endLine === 'number') {
- to = consumer.originalPositionFor({ column: endColumn, line: endLine })
- }
- let fromUrl
- if (isAbsolute(from.source)) {
- fromUrl = pathToFileURL(from.source)
- } else {
- fromUrl = new URL(
- from.source,
- this.map.consumer().sourceRoot || pathToFileURL(this.map.mapFile)
- )
- }
- let result = {
- column: from.column,
- endColumn: to && to.column,
- endLine: to && to.line,
- line: from.line,
- url: fromUrl.toString()
- }
- if (fromUrl.protocol === 'file:') {
- if (fileURLToPath) {
- result.file = fileURLToPath(fromUrl)
- } else {
- /* c8 ignore next 2 */
- throw new Error(`file: protocol is not available in this PostCSS build`)
- }
- }
- let source = consumer.sourceContentFor(from.source)
- if (source) result.source = source
- return result
- }
- toJSON() {
- let json = {}
- for (let name of ['hasBOM', 'css', 'file', 'id']) {
- if (this[name] != null) {
- json[name] = this[name]
- }
- }
- if (this.map) {
- json.map = { ...this.map }
- if (json.map.consumerCache) {
- json.map.consumerCache = undefined
- }
- }
- return json
- }
- get from() {
- return this.file || this.id
- }
- }
- module.exports = Input
- Input.default = Input
- if (terminalHighlight && terminalHighlight.registerInput) {
- terminalHighlight.registerInput(Input)
- }
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