/* 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, 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)
		pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
div#cgit {
	padding: 0em;
	margin: 0em;
	font-family: sans-serif;
	font-size: 10pt;
	color: #333;
	background: white;
	padding: 4px;
}

div#cgit a {
	color: blue;
	text-decoration: none;
}

div#cgit a:hover {
	text-decoration: underline;
}

div#cgit table {
      border-collapse: collapse;
}

div#cgit table#header {
	width: 100%;
	margin-bottom: 1em;
}

div#cgit table#header td.logo {
	width: 96px;
	vertical-align: top;
}

div#cgit table#header td.main {
	font-size: 250%;
	padding-left: 10px;
	white-space: nowrap;
}

div#cgit table#header td.main a {
	color: #000;
}

div#cgit table#header td.form {
	text-align: right;
	vertical-align: bottom;
	padding-right: 1em;
	padding-bottom: 2px;
	white-space: nowrap;
}

div#cgit table#header td.form form,
div#cgit table#header td.form input,
div#cgit table#header td.form select {
	font-size: 90%;
}

div#cgit table#header td.sub {
	color: #777;
	border-top: solid 1px #ccc;
	padding-left: 10px;
}

div#cgit table.tabs {
	border-bottom: solid 3px #ccc;
	border-collapse: collapse;
	margin-top: 2em;
	margin-bottom: 0px;
	width: 100%;
}

div#cgit table.tabs td {
	padding: 0px 1em;
	vertical-align: bottom;
}

div#cgit table.tabs td a {
	padding: 2px 0.75em;
	color: #777;
	font-size: 110%;
}

div#cgit table.tabs td a.active {
	color: #000;
	background-color: #ccc;
}

div#cgit table.tabs td.form {
	text-align: right;
}

div#cgit table.tabs td.form form {
	padding-bottom: 2px;
	font-size: 90%;
	white-space: nowrap;
}

div#cgit table.tabs td.form input,
div#cgit table.tabs td.form select {
	font-size: 90%;
}

div#cgit div.path {
	margin: 0px;
	padding: 5px 2em 2px 2em;
	color: #000;
	background-color: #eee;
}

div#cgit div.content {
	margin: 0px;
	padding: 2em;
	border-bottom: solid 3px #ccc;
}


div#cgit table.list {
	width: 100%;
	border: none;
	border-collapse: collapse;
}

div#cgit table.list tr {
	background: white;
}

div#cgit table.list tr.logheader {
	background: #eee;
}

div#cgit table.list tr:hover {
	background: #eee;
}

div#cgit table.list tr.nohover:hover {
	background: white;
}

div#cgit table.list th {
	font-weight: bold;
	/* color: #888;
	border-top: dashed 1px #888;
	border-bottom: dashed 1px #888;
	*/
	padding: 0.1em 0.5em 0.05em 0.5em;
	vertical-align: baseline;
}

div#cgit table.list td {
	border: none;
	padding: 0.1em 0.5em 0.1em 0.5em;
}

div#cgit table.list td.commitgraph {
	font-family: monospace;
	white-space: pre;
}

div#cgit table.list td.commitgraph .column1 {
	color: #a00;
}

div#cgit table.list td.commitgraph .column2 {
	color: #0a0;
}

div#cgit table.list td.commitgraph .column3 {
	color: #aa0;
}

div#cgit table.list td.commitgraph .column4 {
	color: #00a;
}

div#cgit table.list td.commitgraph .column5 {
	color: #a0a;
}

div#cgit table.list td.commitgraph .column6 {
	color: #0aa;
}

div#cgit table.list td.logsubject {
	font-family: monospace;
	font-weight: bold;
}

div#cgit table.list td.logmsg {
	font-family: monospace;
	white-space: pre;
	padding: 0 0.5em;
}

div#cgit table.list td a {
	color: black;
}

div#cgit table.list td a.ls-dir {
	font-weight: bold;
	color: #00f;
}

div#cgit table.list td a:hover {
	color: #00f;
}

div#cgit img {
	border: none;
}

div#cgit input#switch-btn {
	margin: 2px 0px 0px 0px;
}

div#cgit td#sidebar input.txt {
	width: 100%;
	margin: 2px 0px 0px 0px;
}

div#cgit table#grid {
	margin: 0px;
}

div#cgit td#content {
	vertical-align: top;
	padding: 1em 2em 1em 1em;
	border: none;
}

div#cgit div#summary {
	vertical-align: top;
	margin-bottom: 1em;
}

div#cgit table#downloads {
	float: right;
	border-collapse: collapse;
	border: solid 1px #777;
	margin-left: 0.5em;
	margin-bottom: 0.5em;
}

div#cgit table#downloads th {
	background-color: #ccc;
}

div#cgit div#blob {
	border: solid 1px black;
}

div#cgit div.error {
	color: red;
	font-weight: bold;
	margin: 1em 2em;
}

div#cgit a.ls-blob, div#cgit a.ls-dir, div#cgit a.ls-mod {
	font-family: monospace;
}

div#cgit td.ls-size {
	text-align: right;
	font-family: monospace;
	width: 10em;
}

div#cgit td.ls-mode {
	font-family: monospace;
	width: 10em;
}

div#cgit table.blob {
	margin-top: 0.5em;
	border-top: solid 1px black;
}

div#cgit table.blob td.lines {
	margin: 0; padding: 0 0 0 0.5em;
	vertical-align: top;
	color: black;
}

div#cgit table.blob td.linenumbers {
	margin: 0; padding: 0 0.5em 0 0.5em;
	vertical-align: top;
	text-align: right;
	border-right: 1px solid gray;
}

div#cgit table.blob pre {
	padding: 0; margin: 0;
}

div#cgit table.blob a.no, div#cgit table.ssdiff a.no {
	color: gray;
	text-align: right;
	text-decoration: none;
}

div#cgit table.blob a.no a:hover {
	color: black;
}

div#cgit table.bin-blob {
	margin-top: 0.5em;
	border: solid 1px black;
}

div#cgit table.bin-blob th {
	font-family: monospace;
	white-space: pre;
	border: solid 1px #777;
	padding: 0.5em 1em;
}

div#cgit table.bin-blob td {
	font-family: monospace;
	white-space: pre;
	border-left: solid 1px #777;
	padding: 0em 1em;
}

div#cgit table.nowrap td {
	white-space: nowrap;
}

div#cgit table.commit-info {
	border-collapse: collapse;
	margin-top: 1.5em;
}

div#cgit div.cgit-panel {
	float: right;
	margin-top: 1.5em;
}

div#cgit div.cgit-panel table {
	border-collapse: collapse;
	border: solid 1px #aaa;
	background-color: #eee;
}

div#cgit div.cgit-panel th {
	text-align: center;
}

div#cgit div.cgit-panel td {
	padding: 0.25em 0.5em;
}

div#cgit div.cgit-panel td.label {
	padding-right: 0.5em;
}

div#cgit div.cgit-panel td.ctrl {
	padding-left: 0.5em;
}

div#cgit table.commit-info th {
	text-align: left;
	font-weight: normal;
	padding: 0.1em 1em 0.1em 0.1em;
	vertical-align: top;
}

div#cgit table.commit-info td {
	font-weight: normal;
	padding: 0.1em 1em 0.1em 0.1em;
}

div#cgit div.commit-subject {
	font-weight: bold;
	font-size: 125%;
	margin: 1.5em 0em 0.5em 0em;
	padding: 0em;
}

div#cgit div.commit-msg {
	white-space: pre;
	font-family: monospace;
}

div#cgit div.notes-header {
	font-weight: bold;
	padding-top: 1.5em;
}

div#cgit div.notes {
	white-space: pre;
	font-family: monospace;
	border: solid 1px #ee9;
	background-color: #ffd;
	padding: 0.3em 2em 0.3em 1em;
	float: left;
}

div#cgit div.notes-footer {
	clear: left;
}

div#cgit div.diffstat-header {
	font-weight: bold;
	padding-top: 1.5em;
}

div#cgit table.diffstat {
	border-collapse: collapse;
	border: solid 1px #aaa;
	background-color: #eee;
}

div#cgit table.diffstat th {
	font-weight: normal;
	text-align: left;
	text-decoration: underline;
	padding: 0.1em 1em 0.1em 0.1em;
	font-size: 100%;
}

div#cgit table.diffstat td {
	padding: 0.2em 0.2em 0.1em 0.1em;
	font-size: 100%;
	border: none;
}

div#cgit table.diffstat td.mode {
	white-space: nowrap;
}

div#cgit table.diffstat td span.modechange {
	padding-left: 1em;
	color: red;
}

div#cgit table.diffstat td.add a {
	color: green;
}

div#cgit table.diffstat td.del a {
	color: red;
}

div#cgit table.diffstat td.upd a {
	color: blue;
}

div#cgit table.diffstat td.graph {
	width: 500px;
	vertical-align: middle;
}

div#cgit table.diffstat td.graph table {
	border: none;
}

div#cgit table.diffstat td.graph td {
	padding: 0px;
	border: 0px;
	height: 7pt;
}

div#cgit table.diffstat td.graph td.add {
	background-color: #5c5;
}

div#cgit table.diffstat td.graph td.rem {
	background-color: #c55;
}

div#cgit div.diffstat-summary {
	color: #888;
	padding-top: 0.5em;
}

div#cgit table.diff {
	width: 100%;
}

div#cgit table.diff td {
	font-family: monospace;
	white-space: pre;
}

div#cgit table.diff td div.head {
	font-weight: bold;
	margin-top: 1em;
	color: black;
}

div#cgit table.diff td div.hunk {
	color: #009;
}

div#cgit table.diff td div.add {
	color: green;
}

div#cgit table.diff td div.del {
	color: red;
}

div#cgit .sha1 {
	font-family: monospace;
	font-size: 90%;
}

div#cgit .left {
	text-align: left;
}

div#cgit .right {
	text-align: right;
}

div#cgit table.list td.reposection {
	font-style: italic;
	color: #888;
}

div#cgit a.button {
	font-size: 80%;
	padding: 0em 0.5em;
}

div#cgit a.primary {
	font-size: 100%;
}

div#cgit a.secondary {
	font-size: 90%;
}

div#cgit td.toplevel-repo {

}

div#cgit table.list td.sublevel-repo {
	padding-left: 1.5em;
}

div#cgit div.pager {
	text-align: center;
	margin: 1em 0em 0em 0em;
}

div#cgit div.pager a {
	color: #777;
	margin: 0em 0.5em;
}

div#cgit div.pager .current {
	font-weight: bold;
}

div#cgit span.age-mins {
	font-weight: bold;
	color: #080;
}

div#cgit span.age-hours {
	color: #080;
}

div#cgit span.age-days {
	color: #040;
}

div#cgit span.age-weeks {
	color: #444;
}

div#cgit span.age-months {
	color: #888;
}

div#cgit span.age-years {
	color: #bbb;
}
div#cgit div.footer {
	margin-top: 0.5em;
	text-align: center;
	font-size: 80%;
	color: #ccc;
}
div#cgit a.branch-deco {
	color: #000;
	margin: 0px 0.5em;
	padding: 0px 0.25em;
	background-color: #88ff88;
	border: solid 1px #007700;
}
div#cgit a.tag-deco {
	color: #000;
	margin: 0px 0.5em;
	padding: 0px 0.25em;
	background-color: #ffff88;
	border: solid 1px #777700;
}
div#cgit a.remote-deco {
	color: #000;
	margin: 0px 0.5em;
	padding: 0px 0.25em;
	background-color: #ccccff;
	border: solid 1px #000077;
}
div#cgit a.deco {
	color: #000;
	margin: 0px 0.5em;
	padding: 0px 0.25em;
	background-color: #ff8888;
	border: solid 1px #770000;
}

div#cgit div.commit-subject a.branch-deco,
div#cgit div.commit-subject a.tag-deco,
div#cgit div.commit-subject a.remote-deco,
div#cgit div.commit-subject a.deco {
	margin-left: 1em;
	font-size: 75%;
}

div#cgit table.stats {
	border: solid 1px black;
	border-collapse: collapse;
}

div#cgit table.stats th {
	text-align: left;
	padding: 1px 0.5em;
	background-color: #eee;
	border: solid 1px black;
}

div#cgit table.stats td {
	text-align: right;
	padding: 1px 0.5em;
	border: solid 1px black;
}

div#cgit table.stats td.total {
	font-weight: bold;
	text-align: left;
}

div#cgit table.stats td.sum {
	color: #c00;
	font-weight: bold;
/*	background-color: #eee; */
}

div#cgit table.stats td.left {
	text-align: left;
}

div#cgit table.vgraph {
	border-collapse: separate;
	border: solid 1px black;
	height: 200px;
}

div#cgit table.vgraph th {
	background-color: #eee;
	font-weight: bold;
	border: solid 1px white;
	padding: 1px 0.5em;
}

div#cgit table.vgraph td {
	vertical-align: bottom;
	padding: 0px 10px;
}

div#cgit table.vgraph div.bar {
	background-color: #eee;
}

div#cgit table.hgraph {
	border: solid 1px black;
	width: 800px;
}

div#cgit table.hgraph th {
	background-color: #eee;
	font-weight: bold;
	border: solid 1px black;
	padding: 1px 0.5em;
}

div#cgit table.hgraph td {
	vertical-align: middle;
	padding: 2px 2px;
}

div#cgit table.hgraph div.bar {
	background-color: #eee;
	height: 1em;
}

div#cgit table.ssdiff {
	width: 100%;
}

div#cgit table.ssdiff td {
	font-size: 75%;
	font-family: monospace;
	white-space: pre;
	padding: 1px 4px 1px 4px;
	border-left: solid 1px #aaa;
	border-right: solid 1px #aaa;
}

div#cgit table.ssdiff td.add {
	color: black;
	background: #cfc;
	min-width: 50%;
}

div#cgit table.ssdiff td.add_dark {
	color: black;
	background: #aca;
	min-width: 50%;
}

div#cgit table.ssdiff span.add {
	background: #cfc;
	font-weight: bold;
}

div#cgit table.ssdiff td.del {
	color: black;
	background: #fcc;
	min-width: 50%;
}

div#cgit table.ssdiff td.del_dark {
	color: black;
	background: #caa;
	min-width: 50%;
}

div#cgit table.ssdiff span.del {
	background: #fcc;
	font-weight: bold;
}

div#cgit table.ssdiff td.changed {
	color: black;
	background: #ffc;
	min-width: 50%;
}

div#cgit table.ssdiff td.changed_dark {
	color: black;
	background: #cca;
	min-width: 50%;
}

div#cgit table.ssdiff td.lineno {
	color: black;
	background: #eee;
	text-align: right;
	width: 3em;
	min-width: 3em;
}

div#cgit table.ssdiff td.hunk {
	color: black;
	background: #ccf;
	border-top: solid 1px #aaa;
	border-bottom: solid 1px #aaa;
}

div#cgit table.ssdiff td.head {
	border-top: solid 1px #aaa;
	border-bottom: solid 1px #aaa;
}

div#cgit table.ssdiff td.head div.head {
	font-weight: bold;
	color: black;
}

div#cgit table.ssdiff td.foot {
	border-top: solid 1px #aaa;
        border-left: none;
        border-right: none;
        border-bottom: none;
}

div#cgit table.ssdiff td.space {
	border: none;
}

div#cgit table.ssdiff td.space div {
	min-height: 3em;
}

/* Syntax highlighting */
div#cgit table.blob .num  { color:#2928ff; }
div#cgit table.blob .esc  { color:#ff00ff; }
div#cgit table.blob .str  { color:#ff0000; }
div#cgit table.blob .dstr { color:#818100; }
div#cgit table.blob .slc  { color:#838183; font-style:italic; }
div#cgit table.blob .com  { color:#838183; font-style:italic; }
div#cgit table.blob .dir  { color:#008200; }
div#cgit table.blob .sym  { color:#000000; }
div#cgit table.blob .kwa  { color:#000000; font-weight:bold; }
div#cgit table.blob .kwb  { color:#830000; }
div#cgit table.blob .kwc  { color:#000000; font-weight:bold; }
div#cgit table.blob .kwd  { color:#010181; }