function parseDiffWithLineNumbers()

in packages/cli/src/ui/components/messages/DiffRenderer.tsx [21:88]
62 lines of code
17 McCabe index (conditional complexity)

function parseDiffWithLineNumbers(diffContent: string): DiffLine[] {
  const lines = diffContent.split('\n');
  const result: DiffLine[] = [];
  let currentOldLine = 0;
  let currentNewLine = 0;
  let inHunk = false;
  const hunkHeaderRegex = /^@@ -(\d+),?\d* \+(\d+),?\d* @@/;

  for (const line of lines) {
    const hunkMatch = line.match(hunkHeaderRegex);
    if (hunkMatch) {
      currentOldLine = parseInt(hunkMatch[1], 10);
      currentNewLine = parseInt(hunkMatch[2], 10);
      inHunk = true;
      result.push({ type: 'hunk', content: line });
      // We need to adjust the starting point because the first line number applies to the *first* actual line change/context,
      // but we increment *before* pushing that line. So decrement here.
      currentOldLine--;
      currentNewLine--;
      continue;
    }
    if (!inHunk) {
      // Skip standard Git header lines more robustly
      if (
        line.startsWith('--- ') ||
        line.startsWith('+++ ') ||
        line.startsWith('diff --git') ||
        line.startsWith('index ') ||
        line.startsWith('similarity index') ||
        line.startsWith('rename from') ||
        line.startsWith('rename to') ||
        line.startsWith('new file mode') ||
        line.startsWith('deleted file mode')
      )
        continue;
      // If it's not a hunk or header, skip (or handle as 'other' if needed)
      continue;
    }
    if (line.startsWith('+')) {
      currentNewLine++; // Increment before pushing
      result.push({
        type: 'add',
        newLine: currentNewLine,
        content: line.substring(1),
      });
    } else if (line.startsWith('-')) {
      currentOldLine++; // Increment before pushing
      result.push({
        type: 'del',
        oldLine: currentOldLine,
        content: line.substring(1),
      });
    } else if (line.startsWith(' ')) {
      currentOldLine++; // Increment before pushing
      currentNewLine++;
      result.push({
        type: 'context',
        oldLine: currentOldLine,
        newLine: currentNewLine,
        content: line.substring(1),
      });
    } else if (line.startsWith('\\')) {
      // Handle "\ No newline at end of file"
      result.push({ type: 'other', content: line });
    }
  }
  return result;
}