/* 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"
#include "html.h"
#include "ui-shared.h"
#include "ui-ssdiff.h"

unsigned char old_rev_sha1[20];
unsigned char new_rev_sha1[20];

static int files, slots;
static int total_adds, total_rems, max_changes;
static int lines_added, lines_removed;

static struct fileinfo {
	char status;
	unsigned char old_sha1[20];
	unsigned char new_sha1[20];
	unsigned short old_mode;
	unsigned short new_mode;
	char *old_path;
	char *new_path;
	unsigned int added;
	unsigned int removed;
	unsigned long old_size;
	unsigned long new_size;
	int binary:1;
} *items;

static int use_ssdiff = 0;
static struct diff_filepair *current_filepair;

struct diff_filespec *cgit_get_current_old_file(void)
{
	return current_filepair->one;
}

struct diff_filespec *cgit_get_current_new_file(void)
{
	return current_filepair->two;
}

static void print_fileinfo(struct fileinfo *info)
{
	char *class;

	switch (info->status) {
	case DIFF_STATUS_ADDED:
		class = "add";
		break;
	case DIFF_STATUS_COPIED:
		class = "cpy";
		break;
	case DIFF_STATUS_DELETED:
		class = "del";
		break;
	case DIFF_STATUS_MODIFIED:
		class = "upd";
		break;
	case DIFF_STATUS_RENAMED:
		class = "mov";
		break;
	case DIFF_STATUS_TYPE_CHANGED:
		class = "typ";
		break;
	case DIFF_STATUS_UNKNOWN:
		class = "unk";
		break;
	case DIFF_STATUS_UNMERGED:
		class = "stg";
		break;
	default:
		die("bug: unhandled diff status %c", info->status);
	}

	html("<tr>");
	htmlf("<td class='mode'>");
	if (is_null_sha1(info->new_sha1)) {
		cgit_print_filemode(info->old_mode);
	} else {
		cgit_print_filemode(info->new_mode);
	}

	if (info->old_mode != info->new_mode &&
	    !is_null_sha1(info->old_sha1) &&
	    !is_null_sha1(info->new_sha1)) {
		html("<span class='modechange'>[");
		cgit_print_filemode(info->old_mode);
		html("]</span>");
	}
	htmlf("</td><td class='%s'>", class);
	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
		       ctx.qry.sha2, info->new_path, 0);
	if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED)
		htmlf(" (%s from %s)",
		      info->status == DIFF_STATUS_COPIED ? "copied" : "renamed",
		      info->old_path);
	html("</td><td class='right'>");
	if (info->binary) {
		htmlf("bin</td><td class='graph'>%ld -> %ld bytes",
		      info->old_size, info->new_size);
		return;
	}
	htmlf("%d", info->added + info->removed);
	html("</td><td class='graph'>");
	htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
	htmlf("<td class='add' style='width: %.1f%%;'/>",
	      info->added * 100.0 / max_changes);
	htmlf("<td class='rem' style='width: %.1f%%;'/>",
	      info->removed * 100.0 / max_changes);
	htmlf("<td class='none' style='width: %.1f%%;'/>",
	      (max_changes - info->removed - info->added) * 100.0 / max_changes);
	html("</tr></table></td></tr>\n");
}

static void count_diff_line<style>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 */</style><div class="highlight"><pre><span></span><span class="cp">#ifndef UI_REPOLIST_H</span>
<span class="cp">#define UI_REPOLIST_H</span>

<span class="k">extern</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">cgit_print_repolist</span><span class="p">();</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">cgit_print_site_readme</span><span class="p">();</span>

<span class="cp">#endif </span><span class="cm">/* UI_REPOLIST_H */</span>
</pre></div>
</code></pre></td></tr></table>
</div> <!-- class=content -->
<div class='footer'>generated by <a href='https://git.zx2c4.com/cgit/about/'>cgit v1.2.3-54-g00ecf</a> (<a href='https://git-scm.com/'>git 2.39.0</a>) at 2025-02-19 07:28:33 +0000</div>
</div> <!-- id=cgit -->
</body>
</html>
if (!commit || parse_commit(commit))
		cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));

	if (old_rev)
		get_sha1(old_rev, old_rev_sha1);
	else if (commit->parents && commit->parents->item)
		hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
	else
		hashclr(old_rev_sha1);

	if (!is_null_sha1(old_rev_sha1)) {
		type = sha1_object_info(old_rev_sha1, &size);
		if (type == OBJ_BAD) {
			cgit_print_error(fmt("Bad object name: %s", sha1_to_hex(old_rev_sha1)));
			return;
		}
		commit2 = lookup_commit_reference(old_rev_sha1);
		if (!commit2 || parse_commit(commit2))
			cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1)));
	}

	if ((ctx.qry.ssdiff && !ctx.cfg.ssdiff) || (!ctx.qry.ssdiff && ctx.cfg.ssdiff))
		use_ssdiff = 1;

	print_ssdiff_link();
	cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);

	if (use_ssdiff) {
		html("<table summary='ssdiff' class='ssdiff'>");
	} else {
		html("<table summary='diff' class='diff'>");
		html("<tr><td>");
	}
	cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix,
		       ctx.qry.ignorews);
	if (!use_ssdiff)
		html("</td></tr>");
	html("</table>");
}