/* ui-diff.c: show diff between two blobs * * Copyright (C) 2006 Lars Hjemli * * Licensed under GNU General Public License v2 *   (see COPYING for full license text) */ #include "cgit.h"  /* * print a single line returned from xdiff */static void print_line(char *line, int len){	char *class = "ctx";	char c = line[len-1]; 	if (line[0] == '+')		class = "add";	else if (line[0] == '-')		class = "del";	else if (line[0] == '@')		class = "hunk"; 	htmlf("<div class='%s'>", class);	line[len-1] = '\0';	html_txt(line);	html("</div>");	line[len-1] = c;} static void filepair_cb(struct diff_filepair *pair){	html("<tr><th>");	html_txt(pair->two->path);	html("</th></tr>");	html("<tr><td>");	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))		cgit_print_error("Error running diff");	html("</tr></td>");} void cgit_print_diff(const char *old_hex, const char *new_hex, char *path){	unsigned char sha1[20], sha2[20];	enum object_type type;	unsigned long size; 	get_sha1(old_hex, sha1);	get_sha1(new_hex, sha2); 	type = sha1_object_info(sha1, &size);	if (type == OBJ_BAD) {		type = sha1_object_info(sha2, &size);		if (type == OBJ_BAD) {			cgit_print_error(fmt("Bad object names: %s, %s", old_hex, new_hex));			return;		}	} 	html("<table class='diff'>");	switch(type) {	case OBJ_BLOB:		if (path)			htmlf("<tr><th>%s</th></tr>", path);		html("<tr><td>");		if (cgit_diff_files(sha1, sha2, print_line))			cgit_print_error("Error running diff");		html("</tr></td>");		break;	case OBJ_TREE:		cgit_diff_tree(sha1, sha2, filepair_cb);		break;	default:		cgit_print_error(fmt("Unhandled object type: %s",				     typename(type)));		break;	}	html("</td></tr></table>");}