diff options
Diffstat (limited to 'node_modules/postcss/lib/input.js')
| -rw-r--r-- | node_modules/postcss/lib/input.js | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/node_modules/postcss/lib/input.js b/node_modules/postcss/lib/input.js new file mode 100644 index 0000000..4b5ee5e --- /dev/null +++ b/node_modules/postcss/lib/input.js @@ -0,0 +1,248 @@ +'use strict' + +let { SourceMapConsumer, SourceMapGenerator } = require('source-map-js') +let { fileURLToPath, pathToFileURL } = require('url') +let { isAbsolute, resolve } = require('path') +let { nanoid } = require('nanoid/non-secure') + +let terminalHighlight = require('./terminal-highlight') +let CssSyntaxError = require('./css-syntax-error') +let PreviousMap = require('./previous-map') + +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 result, endLine, endColumn + + 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) +} |