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Resolve fatal crash due to text insertion

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This commit is contained in:
Beingpax 2025-12-02 08:19:20 +05:45
parent 88676362b4
commit 45a2b72bfd
1 changed files with 15 additions and 6 deletions
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21
VoiceInk/Services/TextInsertionFormatter.swift
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@ -38,14 +38,22 @@ class TextInsertionFormatter {
} }
let cursorPosition = rangeValue.location let cursorPosition = rangeValue.location
let beforeStart = max(0, cursorPosition - 100)
let textBefore = String(text[text.index(text.startIndex, offsetBy: beforeStart)..<text.index(text.startIndex, offsetBy: cursorPosition)])
let afterEnd = min(text.count, cursorPosition + 100) guard let cursorUTF16Index = text.utf16.index(text.utf16.startIndex, offsetBy: cursorPosition, limitedBy: text.utf16.endIndex),
let textAfter = String(text[text.index(text.startIndex, offsetBy: cursorPosition)..<text.index(text.startIndex, offsetBy: afterEnd)]) let cursorStringIndex = cursorUTF16Index.samePosition(in: text) else {
return nil
}
let charBefore = cursorPosition > 0 ? text[text.index(text.startIndex, offsetBy: cursorPosition - 1)] : nil let searchRangeLength = 100
let charAfter = cursorPosition < text.count ? text[text.index(text.startIndex, offsetBy: cursorPosition)] : nil
let beforeStartIndex = text.index(cursorStringIndex, offsetBy: -searchRangeLength, limitedBy: text.startIndex) ?? text.startIndex
let textBefore = String(text[beforeStartIndex..<cursorStringIndex])
let afterEndIndex = text.index(cursorStringIndex, offsetBy: searchRangeLength, limitedBy: text.endIndex) ?? text.endIndex
let textAfter = String(text[cursorStringIndex..<afterEndIndex])
let charBefore = cursorStringIndex > text.startIndex ? text[text.index(before: cursorStringIndex)] : nil
let charAfter = cursorStringIndex < text.endIndex ? text[cursorStringIndex] : nil
return InsertionContext( return InsertionContext(
textBefore: textBefore, textBefore: textBefore,
@ -164,3 +172,4 @@ class TextInsertionFormatter {
return false return false
} }
} }