/* ui-patch.c: generate patch view * * Copyright (C) 2007 Lars Hjemli * * Licensed under GNU General Public License v2 *   (see COPYING for full license text) */ #include "cgit.h"#include "html.h"#include "ui-shared.h" static void print_line(char *line, int len){	char c = line[len-1]; 	line[len-1] = '\0';	htmlf("%s\n", line);	line[len-1] = c;} static void header(unsigned char *sha1, char *path1, int mode1,		   unsigned char *sha2, char *path2, int mode2){	char *abbrev1, *abbrev2;	int subproject; 	subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));	htmlf("diff --git a/%s b/%s\n", path1, path2); 	if (is_null_sha1(sha1))		path1 = "dev/null";	if (is_null_sha1(sha2))		path2 = "dev/null"; 	if (mode1 == 0)		htmlf("new file mode %.6o\n", mode2); 	if (mode2 == 0)		htmlf("deleted file mode %.6o\n", mode1); 	if (!subproject) {		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));		htmlf("index %s..%s", abbrev1, abbrev2);		free(abbrev1);		free(abbrev2);		if (mode1 != 0 && mode2 != 0) {			htmlf(" %.6o", mode1);			if (mode2 != mode1)				htmlf("..%.6o", mode2);		}		htmlf("\n--- a/%s\n", path1);		htmlf("+++ b/%s\n", path2);	}} static void filepair_cb(struct diff_filepair *pair){	unsigned long old_size = 0;	unsigned long new_size = 0;	int binary = 0; 	header(pair->one->sha1, pair->one->path, pair->one->mode,	       pair->two->sha1, pair->two->path, pair->two->mode);	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {		if (S_ISGITLINK(pair->one->mode))			print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);		if (S_ISGITLINK(pair->two->mode))			print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);		return;	}	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,			    &new_size, &binary, 0, 0, print_line))		html("Error running diff");	if (binary)		html("Binary files differ\n");} void cgit_print_patch(char *hex, const char *prefix){	struct commit *commit;	struct commitinfo *info;	unsigned char sha1[20], old_sha1[20];	char *patchname; 	if (!hex)		hex = ctx.qry.head; 	if (get_sha1(hex, sha1)) {		cgit_print_error(fmt("Bad object id: %s", hex));		return;	}	commit = lookup_commit_reference(sha1);	if (!commit) {		cgit_print_error(fmt("Bad commit reference: %s", hex));		return;	}	info = cgit_parse_commit(commit); 	if (commit->parents && commit->parents->item)		hashcpy(old_sha1, commit->parents->item->object.sha1);	else		hashclr(old_sha1); 	patchname = fmt("%s.patch", sha1_to_hex(sha1));	ctx.page.mimetype = "text/plain";	ctx.page.filename = patchname;	cgit_print_http_headers(&ctx);	htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));	htmlf("From: %s", info->author);	if (!ctx.cfg.noplainemail) {		htmlf(" %s", info->author_email);	}	html("\n");	html("Date: ");	cgit_print_date(info->author_date, "%a, %d %b %Y %H:%M:%S %z%n", ctx.cfg.local_time);	htmlf("Subject: %s\n\n", info->subject);	if (info->msg && *info->msg) {		htmlf("%s", info->msg);		if (info->msg[strlen(info->msg) - 1] != '\n')			html("\n");	}	html("---\n");	if (prefix)		htmlf("(limited to '%s')\n\n", prefix);	cgit_diff_tree(old_sha1, sha1, filepair_cb, prefix, 0);	html("--\n");	htmlf("cgit %s\n", CGIT_VERSION);	cgit_free_commitinfo(info);}