/**
 * Git Diff Parser
 *
 * Parse git diffs to extract added/deleted content for attribution matching.
 * Includes line-level hashing and move detection.
 */
import type { DiffHunk, DeletedBlock, MoveMapping } from "../types";
export interface DiffFile {
    path: string;
    status: "added" | "modified" | "deleted";
}
export interface CommitDiff {
    files: DiffFile[];
    raw: string;
}
/**
 * Get the diff for a specific commit (compared to its parent)
 */
export declare function getCommitDiff(repoRoot: string, sha: string): Promise<CommitDiff>;
/**
 * Get raw diff string (legacy compatibility)
 */
export declare function getCommitDiffRaw(repoRoot: string, sha: string): Promise<string>;
/**
 * Get full diff including both additions and deletions (for move detection)
 */
export declare function getFullCommitDiff(repoRoot: string, sha: string): Promise<string>;
/**
 * Parse a unified diff to extract added hunks with line-level data
 */
export declare function parseDiff(diffOutput: string): DiffHunk[];
/**
 * Parse deleted blocks from a diff (for move detection)
 */
export declare function parseDeletedBlocks(diffOutput: string): DeletedBlock[];
/**
 * Detect moved code blocks between deletions and additions
 */
export declare function detectMoves(deletedBlocks: DeletedBlock[], addedHunks: DiffHunk[]): MoveMapping[];
/**
 * Build a line-level move index for quick lookup
 */
export declare function buildMoveIndex(moves: MoveMapping[]): Map<string, {
    fromPath: string;
    fromLine: number;
}>;
/**
 * Get parsed diff hunks for a commit with line-level data
 */
export declare function getCommitHunks(repoRoot: string, sha: string): Promise<DiffHunk[]>;
/**
 * Get move mappings for a commit
 */
export declare function getCommitMoves(repoRoot: string, sha: string): Promise<MoveMapping[]>;