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[READ-ONLY] Mirror of https://github.com/flo-bit/shapecraft. flo-bit.dev/shapecraft
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6.8 kB · 265 lines
JavaScript
at commit 049ef598
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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 lineToIndexCache = Symbol('lineToIndexCache')
let sourceMapAvailable = Boolean(SourceMapConsumer && SourceMapGenerator)let pathAvailable = Boolean(resolve && isAbsolute)
function getLineToIndex(input) { if (input[lineToIndexCache]) return input[lineToIndexCache] let lines = input.css.split('\n') let 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 }
input[lineToIndexCache] = lineToIndex return lineToIndex}
class Input { get from() { return this.file || this.id }
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 }
this.document = this.css if (opts.document) this.document = opts.document.toString()
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, endOffset, offset, result
if (line && typeof line === 'object') { let start = line let end = column if (typeof start.offset === 'number') { offset = start.offset let pos = this.fromOffset(offset) line = pos.line column = pos.col } else { line = start.line column = start.column offset = this.fromLineAndColumn(line, column) } if (typeof end.offset === 'number') { endOffset = end.offset let pos = this.fromOffset(endOffset) endLine = pos.line endColumn = pos.col } else { endLine = end.line endColumn = end.column endOffset = this.fromLineAndColumn(end.line, end.column) } } else if (!column) { offset = line let pos = this.fromOffset(offset) line = pos.line column = pos.col } else { offset = this.fromLineAndColumn(line, column) }
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, endOffset, line, offset, source: this.css } if (this.file) { if (pathToFileURL) { result.input.url = pathToFileURL(this.file).toString() } result.input.file = this.file }
return result }
fromLineAndColumn(line, column) { let lineToIndex = getLineToIndex(this) let index = lineToIndex[line - 1] return index + column - 1 }
fromOffset(offset) { let lineToIndex = getLineToIndex(this) let 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 }}
module.exports = InputInput.default = Input
if (terminalHighlight && terminalHighlight.registerInput) { terminalHighlight.registerInput(Input)}