git/xdiff/xhistogram.c

/*
 * Copyright (C) 2010, Google Inc.
 * and other copyright owners as documented in JGit's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "xinclude.h"

#define MAX_PTR …
#define MAX_CNT …

#define LINE_END(n) …
#define LINE_END_PTR(n) …

struct histindex { … };

struct region { … };

#define LINE_MAP(i, a) …

#define NEXT_PTR(index, ptr) …

#define CNT(index, ptr) …

#define REC(env, s, l) …

static int cmp_recs(xrecord_t *r1, xrecord_t *r2)
{ … }

#define CMP(i, s1, l1, s2, l2) …

#define TABLE_HASH(index, side, line) …

static int scanA(struct histindex *index, int line1, int count1)
{ … }

static int try_lcs(struct histindex *index, struct region *lcs, int b_ptr,
	int line1, int count1, int line2, int count2)
{ … }

static int fall_back_to_classic_diff(xpparam_t const *xpp, xdfenv_t *env,
		int line1, int count1, int line2, int count2)
{ … }

static inline void free_index(struct histindex *index)
{ … }

static int find_lcs(xpparam_t const *xpp, xdfenv_t *env,
		    struct region *lcs,
		    int line1, int count1, int line2, int count2)
{ … }

static int histogram_diff(xpparam_t const *xpp, xdfenv_t *env,
	int line1, int count1, int line2, int count2)
{ … }

int xdl_do_histogram_diff(xpparam_t const *xpp, xdfenv_t *env)
{ … }