1/* ui-diff.c: show diff between two blobs
 2 *
 3 * Copyright (C) 2006 Lars Hjemli
 4 *
 5 * Licensed under GNU General Public License v2
 6 *   (see COPYING for full license text)
 7 */
 8
 9#include "cgit.h"
10
11
12/*
13 * print a single line returned from xdiff
14 */
15static void print_line(char *line, int len)
16{
17	char *class = "ctx";
18	char c = line[len-1];
19
20	if (line[0] == '+')
21		class = "add";
22	else if (line[0] == '-')
23		class = "del";
24	else if (line[0] == '@')
25		class = "hunk";
26
27	htmlf("<div class='%s'>", class);
28	line[len-1] = '\0';
29	html_txt(line);
30	html("</div>");
31	line[len-1] = c;
32}
33
34void cgit_print_diff(const char *old_hex, const char *new_hex)
35{
36	unsigned char sha1[20], sha2[20];
37
38	get_sha1(old_hex, sha1);
39	get_sha1(new_hex, sha2);
40
41	html("<table class='diff'><tr><td>");
42	if (cgit_diff_files(sha1, sha2, print_line))
43		cgit_print_error("Error running diff");
44	html("</td></tr></table>");
45}