source: trip-planner-front/node_modules/postcss/lib/input.js@ 6fe77af

Last change on this file since 6fe77af was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 4.9 KB
Line 
1'use strict'
2
3let { SourceMapConsumer, SourceMapGenerator } = require('source-map-js')
4let { fileURLToPath, pathToFileURL } = require('url')
5let { resolve, isAbsolute } = require('path')
6let { nanoid } = require('nanoid/non-secure')
7
8let terminalHighlight = require('./terminal-highlight')
9let CssSyntaxError = require('./css-syntax-error')
10let PreviousMap = require('./previous-map')
11
12let fromOffsetCache = Symbol('fromOffsetCache')
13
14let sourceMapAvailable = Boolean(SourceMapConsumer && SourceMapGenerator)
15let pathAvailable = Boolean(resolve && isAbsolute)
16
17class Input {
18 constructor(css, opts = {}) {
19 if (
20 css === null ||
21 typeof css === 'undefined' ||
22 (typeof css === 'object' && !css.toString)
23 ) {
24 throw new Error(`PostCSS received ${css} instead of CSS string`)
25 }
26
27 this.css = css.toString()
28
29 if (this.css[0] === '\uFEFF' || this.css[0] === '\uFFFE') {
30 this.hasBOM = true
31 this.css = this.css.slice(1)
32 } else {
33 this.hasBOM = false
34 }
35
36 if (opts.from) {
37 if (
38 !pathAvailable ||
39 /^\w+:\/\//.test(opts.from) ||
40 isAbsolute(opts.from)
41 ) {
42 this.file = opts.from
43 } else {
44 this.file = resolve(opts.from)
45 }
46 }
47
48 if (pathAvailable && sourceMapAvailable) {
49 let map = new PreviousMap(this.css, opts)
50 if (map.text) {
51 this.map = map
52 let file = map.consumer().file
53 if (!this.file && file) this.file = this.mapResolve(file)
54 }
55 }
56
57 if (!this.file) {
58 this.id = '<input css ' + nanoid(6) + '>'
59 }
60 if (this.map) this.map.file = this.from
61 }
62
63 fromOffset(offset) {
64 let lastLine, lineToIndex
65 if (!this[fromOffsetCache]) {
66 let lines = this.css.split('\n')
67 lineToIndex = new Array(lines.length)
68 let prevIndex = 0
69
70 for (let i = 0, l = lines.length; i < l; i++) {
71 lineToIndex[i] = prevIndex
72 prevIndex += lines[i].length + 1
73 }
74
75 this[fromOffsetCache] = lineToIndex
76 } else {
77 lineToIndex = this[fromOffsetCache]
78 }
79 lastLine = lineToIndex[lineToIndex.length - 1]
80
81 let min = 0
82 if (offset >= lastLine) {
83 min = lineToIndex.length - 1
84 } else {
85 let max = lineToIndex.length - 2
86 let mid
87 while (min < max) {
88 mid = min + ((max - min) >> 1)
89 if (offset < lineToIndex[mid]) {
90 max = mid - 1
91 } else if (offset >= lineToIndex[mid + 1]) {
92 min = mid + 1
93 } else {
94 min = mid
95 break
96 }
97 }
98 }
99 return {
100 line: min + 1,
101 col: offset - lineToIndex[min] + 1
102 }
103 }
104
105 error(message, line, column, opts = {}) {
106 let result
107 if (!column) {
108 let pos = this.fromOffset(line)
109 line = pos.line
110 column = pos.col
111 }
112 let origin = this.origin(line, column)
113 if (origin) {
114 result = new CssSyntaxError(
115 message,
116 origin.line,
117 origin.column,
118 origin.source,
119 origin.file,
120 opts.plugin
121 )
122 } else {
123 result = new CssSyntaxError(
124 message,
125 line,
126 column,
127 this.css,
128 this.file,
129 opts.plugin
130 )
131 }
132
133 result.input = { line, column, source: this.css }
134 if (this.file) {
135 if (pathToFileURL) {
136 result.input.url = pathToFileURL(this.file).toString()
137 }
138 result.input.file = this.file
139 }
140
141 return result
142 }
143
144 origin(line, column) {
145 if (!this.map) return false
146 let consumer = this.map.consumer()
147
148 let from = consumer.originalPositionFor({ line, column })
149 if (!from.source) return false
150
151 let fromUrl
152
153 if (isAbsolute(from.source)) {
154 fromUrl = pathToFileURL(from.source)
155 } else {
156 fromUrl = new URL(
157 from.source,
158 this.map.consumer().sourceRoot || pathToFileURL(this.map.mapFile)
159 )
160 }
161
162 let result = {
163 url: fromUrl.toString(),
164 line: from.line,
165 column: from.column
166 }
167
168 if (fromUrl.protocol === 'file:') {
169 if (fileURLToPath) {
170 result.file = fileURLToPath(fromUrl)
171 } else {
172 // istanbul ignore next
173 throw new Error(`file: protocol is not available in this PostCSS build`)
174 }
175 }
176
177 let source = consumer.sourceContentFor(from.source)
178 if (source) result.source = source
179
180 return result
181 }
182
183 mapResolve(file) {
184 if (/^\w+:\/\//.test(file)) {
185 return file
186 }
187 return resolve(this.map.consumer().sourceRoot || this.map.root || '.', file)
188 }
189
190 get from() {
191 return this.file || this.id
192 }
193
194 toJSON() {
195 let json = {}
196 for (let name of ['hasBOM', 'css', 'file', 'id']) {
197 if (this[name] != null) {
198 json[name] = this[name]
199 }
200 }
201 if (this.map) {
202 json.map = { ...this.map }
203 if (json.map.consumerCache) {
204 json.map.consumerCache = undefined
205 }
206 }
207 return json
208 }
209}
210
211module.exports = Input
212Input.default = Input
213
214if (terminalHighlight && terminalHighlight.registerInput) {
215 terminalHighlight.registerInput(Input)
216}
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