Buckets:
| import stringWidth from 'string-width'; | |
| import stripAnsi from 'strip-ansi'; | |
| import ansiStyles from 'ansi-styles'; | |
| const ESCAPES = new Set([ | |
| '\u001B', | |
| '\u009B', | |
| ]); | |
| const END_CODE = 39; | |
| const ANSI_ESCAPE_BELL = '\u0007'; | |
| const ANSI_CSI = '['; | |
| const ANSI_OSC = ']'; | |
| const ANSI_SGR_TERMINATOR = 'm'; | |
| const ANSI_ESCAPE_LINK = `${ANSI_OSC}8;;`; | |
| const wrapAnsiCode = code => `${ESCAPES.values().next().value}${ANSI_CSI}${code}${ANSI_SGR_TERMINATOR}`; | |
| const wrapAnsiHyperlink = uri => `${ESCAPES.values().next().value}${ANSI_ESCAPE_LINK}${uri}${ANSI_ESCAPE_BELL}`; | |
| // Calculate the length of words split on ' ', ignoring | |
| // the extra characters added by ansi escape codes | |
| const wordLengths = string => string.split(' ').map(character => stringWidth(character)); | |
| // Wrap a long word across multiple rows | |
| // Ansi escape codes do not count towards length | |
| const wrapWord = (rows, word, columns) => { | |
| const characters = [...word]; | |
| let isInsideEscape = false; | |
| let isInsideLinkEscape = false; | |
| let visible = stringWidth(stripAnsi(rows[rows.length - 1])); | |
| for (const [index, character] of characters.entries()) { | |
| const characterLength = stringWidth(character); | |
| if (visible + characterLength <= columns) { | |
| rows[rows.length - 1] += character; | |
| } else { | |
| rows.push(character); | |
| visible = 0; | |
| } | |
| if (ESCAPES.has(character)) { | |
| isInsideEscape = true; | |
| isInsideLinkEscape = characters.slice(index + 1).join('').startsWith(ANSI_ESCAPE_LINK); | |
| } | |
| if (isInsideEscape) { | |
| if (isInsideLinkEscape) { | |
| if (character === ANSI_ESCAPE_BELL) { | |
| isInsideEscape = false; | |
| isInsideLinkEscape = false; | |
| } | |
| } else if (character === ANSI_SGR_TERMINATOR) { | |
| isInsideEscape = false; | |
| } | |
| continue; | |
| } | |
| visible += characterLength; | |
| if (visible === columns && index < characters.length - 1) { | |
| rows.push(''); | |
| visible = 0; | |
| } | |
| } | |
| // It's possible that the last row we copy over is only | |
| // ansi escape characters, handle this edge-case | |
| if (!visible && rows[rows.length - 1].length > 0 && rows.length > 1) { | |
| rows[rows.length - 2] += rows.pop(); | |
| } | |
| }; | |
| // Trims spaces from a string ignoring invisible sequences | |
| const stringVisibleTrimSpacesRight = string => { | |
| const words = string.split(' '); | |
| let last = words.length; | |
| while (last > 0) { | |
| if (stringWidth(words[last - 1]) > 0) { | |
| break; | |
| } | |
| last--; | |
| } | |
| if (last === words.length) { | |
| return string; | |
| } | |
| return words.slice(0, last).join(' ') + words.slice(last).join(''); | |
| }; | |
| // The wrap-ansi module can be invoked in either 'hard' or 'soft' wrap mode | |
| // | |
| // 'hard' will never allow a string to take up more than columns characters | |
| // | |
| // 'soft' allows long words to expand past the column length | |
| const exec = (string, columns, options = {}) => { | |
| if (options.trim !== false && string.trim() === '') { | |
| return ''; | |
| } | |
| let returnValue = ''; | |
| let escapeCode; | |
| let escapeUrl; | |
| const lengths = wordLengths(string); | |
| let rows = ['']; | |
| for (const [index, word] of string.split(' ').entries()) { | |
| if (options.trim !== false) { | |
| rows[rows.length - 1] = rows[rows.length - 1].trimStart(); | |
| } | |
| let rowLength = stringWidth(rows[rows.length - 1]); | |
| if (index !== 0) { | |
| if (rowLength >= columns && (options.wordWrap === false || options.trim === false)) { | |
| // If we start with a new word but the current row length equals the length of the columns, add a new row | |
| rows.push(''); | |
| rowLength = 0; | |
| } | |
| if (rowLength > 0 || options.trim === false) { | |
| rows[rows.length - 1] += ' '; | |
| rowLength++; | |
| } | |
| } | |
| // In 'hard' wrap mode, the length of a line is never allowed to extend past 'columns' | |
| if (options.hard && lengths[index] > columns) { | |
| const remainingColumns = (columns - rowLength); | |
| const breaksStartingThisLine = 1 + Math.floor((lengths[index] - remainingColumns - 1) / columns); | |
| const breaksStartingNextLine = Math.floor((lengths[index] - 1) / columns); | |
| if (breaksStartingNextLine < breaksStartingThisLine) { | |
| rows.push(''); | |
| } | |
| wrapWord(rows, word, columns); | |
| continue; | |
| } | |
| if (rowLength + lengths[index] > columns && rowLength > 0 && lengths[index] > 0) { | |
| if (options.wordWrap === false && rowLength < columns) { | |
| wrapWord(rows, word, columns); | |
| continue; | |
| } | |
| rows.push(''); | |
| } | |
| if (rowLength + lengths[index] > columns && options.wordWrap === false) { | |
| wrapWord(rows, word, columns); | |
| continue; | |
| } | |
| rows[rows.length - 1] += word; | |
| } | |
| if (options.trim !== false) { | |
| rows = rows.map(row => stringVisibleTrimSpacesRight(row)); | |
| } | |
| const pre = [...rows.join('\n')]; | |
| for (const [index, character] of pre.entries()) { | |
| returnValue += character; | |
| if (ESCAPES.has(character)) { | |
| const {groups} = new RegExp(`(?:\\${ANSI_CSI}(?<code>\\d+)m|\\${ANSI_ESCAPE_LINK}(?<uri>.*)${ANSI_ESCAPE_BELL})`).exec(pre.slice(index).join('')) || {groups: {}}; | |
| if (groups.code !== undefined) { | |
| const code = Number.parseFloat(groups.code); | |
| escapeCode = code === END_CODE ? undefined : code; | |
| } else if (groups.uri !== undefined) { | |
| escapeUrl = groups.uri.length === 0 ? undefined : groups.uri; | |
| } | |
| } | |
| const code = ansiStyles.codes.get(Number(escapeCode)); | |
| if (pre[index + 1] === '\n') { | |
| if (escapeUrl) { | |
| returnValue += wrapAnsiHyperlink(''); | |
| } | |
| if (escapeCode && code) { | |
| returnValue += wrapAnsiCode(code); | |
| } | |
| } else if (character === '\n') { | |
| if (escapeCode && code) { | |
| returnValue += wrapAnsiCode(escapeCode); | |
| } | |
| if (escapeUrl) { | |
| returnValue += wrapAnsiHyperlink(escapeUrl); | |
| } | |
| } | |
| } | |
| return returnValue; | |
| }; | |
| // For each newline, invoke the method separately | |
| export default function wrapAnsi(string, columns, options) { | |
| return String(string) | |
| .normalize() | |
| .replace(/\r\n/g, '\n') | |
| .split('\n') | |
| .map(line => exec(line, columns, options)) | |
| .join('\n'); | |
| } | |
Xet Storage Details
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- 5.78 kB
- Xet hash:
- 5c38b8f1cd0d4d9647b46fe94438fb84c4e39a823692e783d800b657399afb62
·
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