72 lines
2.0 KiB
TypeScript
72 lines
2.0 KiB
TypeScript
/**
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* Strip terminal bracketed-paste leaks and repeated artifact tails from composer
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* text before it is shown in the UI or sent to the gateway.
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*
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* Mirrors hermes_cli/input_sanitize.py (CLI/TUI gateway defensive path).
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*/
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const BRACKETED_PASTE_BOUNDARY_START = /(^|[\s\n>:\]\)])\[200~/g
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const BRACKETED_PASTE_BOUNDARY_END = /\[201~(?=$|[\s\n<[():;.,!?])/g
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const BRACKETED_PASTE_DEGRADED_START = /(^|[\s\n>:\]\)])00~/g
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const BRACKETED_PASTE_DEGRADED_END = /01~(?=$|[\s\n<[():;.,!?])/g
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const DESKTOP_PASTE_ARTIFACT = '~[[e'
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/** Strip leaked bracketed-paste wrapper markers from user-visible text. */
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export function stripLeakedBracketedPasteWrappers(text: string): string {
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if (!text) {
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return text
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}
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let cleaned = text
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.replace(/\x1b\[200~/g, '')
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.replace(/\x1b\[201~/g, '')
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.replace(/\^\[\[200~/g, '')
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.replace(/\^\[\[201~/g, '')
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cleaned = cleaned.replace(BRACKETED_PASTE_BOUNDARY_START, '$1')
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cleaned = cleaned.replace(BRACKETED_PASTE_BOUNDARY_END, '')
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cleaned = cleaned.replace(BRACKETED_PASTE_DEGRADED_START, '$1')
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cleaned = cleaned.replace(BRACKETED_PASTE_DEGRADED_END, '')
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return cleaned
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}
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/** Drop a trailing run of the desktop ~[[e corruption signature (#62557). */
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export function collapseRepeatedInputArtifacts(text: string, minRepeats = 4): string {
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if (!text) {
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return text
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}
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const marker = DESKTOP_PASTE_ARTIFACT
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let index = text.length
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let repeatCount = 0
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while (index >= marker.length && text.slice(index - marker.length, index) === marker) {
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repeatCount += 1
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index -= marker.length
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}
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if (repeatCount < minRepeats) {
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return text
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}
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let start = index
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if (start >= 2 && text.slice(start - 2, start) === '[e') {
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start -= 2
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} else if (start >= 1 && text[start - 1] === '[') {
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start -= 1
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}
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return text.slice(0, start)
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}
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/** Normalize composer text before submit or draft persistence. */
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export function sanitizeComposerInput(text: string): string {
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if (!text) {
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return text
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}
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return collapseRepeatedInputArtifacts(stripLeakedBracketedPasteWrappers(text))
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}
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