/* ui-patch.c: generate patch view * * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com> * * Licensed under GNU General Public License v2 *   (see COPYING for full license text) */ #include "cgit.h"#include "ui-patch.h"#include "html.h"#include "ui-shared.h" void cgit_print_patch(const char *new_rev, const char *old_rev,		      const char *prefix){	struct rev_info rev;	struct commit *commit;	unsigned char new_rev_sha1[20], old_rev_sha1[20];	char rev_range[2 * 40 + 3];	char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };	char *patchname; 	if (!new_rev)		new_rev = ctx.qry.head; 	if (cgit_get_sha1(new_rev, new_rev_sha1)) {		cgit_print_error_page(404, "Not found",				"Bad object id: %s", new_rev);		return;	}	commit = lookup_commit_reference(new_rev_sha1);	if (!commit) {		cgit_print_error_page(404, "Not found",				"Bad commit reference: %s", new_rev);		return;	} 	if (old_rev) {		if (cgit_get_sha1(old_rev, old_rev_sha1)) {			cgit_print_error_page(404, "Not found",					"Bad object id: %s", old_rev);			return;		}		if (!lookup_commit_reference(old_rev_sha1)) {			cgit_print_error_page(404, "Not found",					"Bad commit reference: %s", old_rev);			return;		}	} else if (commit->parents && commit->parents->item) {		hashcpy(old_rev_sha1, commit->parents->item->object.oid.hash);	} else {		hashclr(old_rev_sha1);	} 	if (is_null_sha1(old_rev_sha1)) {		memcpy(rev_range, sha1_to_hex(new_rev_sha1), 41);	} else {		sprintf(rev_range, "%s..%s", sha1_to_hex(old_rev_sha1),			sha1_to_hex(new_rev_sha1));	} 	patchname = fmt("%s.patch", rev_range);	ctx.page.mimetype = "text/plain";	ctx.page.filename = patchname;	cgit_print_http_headers(); 	if (ctx.cfg.noplainemail) {		rev_argv[2] = "--format=format:From %H Mon Sep 17 00:00:00 "			      "2001%nFrom: %an%nDate: %aD%n%w(78,0,1)Subject: "			      "%s%n%n%w(0)%b";	} 	init_revisions(&rev, NULL);	rev.abbrev = DEFAULT_ABBREV;	rev.verbose_header = 1;	rev.diff = 1;	rev.show_root_diff = 1;	rev.max_parents = 1;	rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |			DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;	setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,			NULL);	prepare_revision_walk(&rev); 	while ((commit = get_revision(&rev)) != NULL) {		log_tree_commit(&rev, commit);		printf("-- \ncgit %s\n\n", cgit_version);	} 	fflush(stdout);}