32 lines
907 B
TypeScript
32 lines
907 B
TypeScript
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import { computeLineHash } from "./hash-computation"
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export function generateHashlineDiff(oldContent: string, newContent: string, filePath: string): string {
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const oldLines = oldContent.split("\n")
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const newLines = newContent.split("\n")
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let diff = `--- ${filePath}\n+++ ${filePath}\n`
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const maxLines = Math.max(oldLines.length, newLines.length)
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for (let i = 0; i < maxLines; i += 1) {
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const oldLine = oldLines[i] ?? ""
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const newLine = newLines[i] ?? ""
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const lineNum = i + 1
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const hash = computeLineHash(lineNum, newLine)
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if (i >= oldLines.length) {
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diff += `+ ${lineNum}#${hash}:${newLine}\n`
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continue
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}
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if (i >= newLines.length) {
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diff += `- ${lineNum}# :${oldLine}\n`
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continue
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}
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if (oldLine !== newLine) {
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diff += `- ${lineNum}# :${oldLine}\n`
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diff += `+ ${lineNum}#${hash}:${newLine}\n`
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}
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}
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return diff
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}
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