/* ui-diff.c: show diff between two blobs
*
* 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-diff.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;
unsigned int binary:1;
} *items;
static int use_ssdiff = 0;
static struct diff_filepair *current_filepair;
static const char *current_prefix;
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);
if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) {
htmlf(" (%s from ",
info->status == DIFF_STATUS_COPIED ? "copied" : "renamed");
html_txt(info->old_path);
html(")");
}
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_lines(char *line, int len)
{
if (line && (len > 0)) {
if (line[0] == '+')
lines_added++;
else if (line[0] == '-')
lines_removed++;
}
}
static int show_filepair(struct diff_filepair *pair)
{
/* Always show if we have no limiting prefix. */
if (!current_prefix)
return 1;
/* Show if either path in the pair be<style>pre { line-height: 125%; }
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm"> * Since git has it's own cache.h which we include,</span>
<span class="cm"> * lets test on CGIT_CACHE_H to avoid confusion</span>
<span class="cm"> */</span>
<span class="cp">#ifndef CGIT_CACHE_H</span>
<span class="cp">#define CGIT_CACHE_H</span>
<span class="k">struct</span><span class="w"> </span><span class="nc">cacheitem</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="n">name</span><span class="p">;</span>
<span class="w"> </span><span class="k">struct</span><span class="w"> </span><span class="nc">stat</span><span class="w"> </span><span class="n">st</span><span class="p">;</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">ttl</span><span class="p">;</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">fd</span><span class="p">;</span>
<span class="p">};</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="nf">cache_safe_filename</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="n">unsafe</span><span class="p">);</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">cache_lock</span><span class="p">(</span><span class="k">struct</span><span class="w"> </span><span class="nc">cacheitem</span><span class="w"> </span><span class="o">*</span><span class="n">item</span><span class="p">);</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">cache_unlock</span><span class="p">(</span><span class="k">struct</span><span class="w"> </span><span class="nc">cacheitem</span><span class="w"> </span><span class="o">*</span><span class="n">item</span><span class="p">);</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">cache_cancel_lock</span><span class="p">(</span><span class="k">struct</span><span class="w"> </span><span class="nc">cacheitem</span><span class="w"> </span><span class="o">*</span><span class="n">item</span><span class="p">);</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">cache_exist</span><span class="p">(</span><span class="k">struct</span><span class="w"> </span><span class="nc">cacheitem</span><span class="w"> </span><span class="o">*</span><span class="n">item</span><span class="p">);</span>
<span class="k">extern</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">cache_expired</span><span class="p">(</span><span class="k">struct</span><span class="w"> </span><span class="nc">cacheitem</span><span class="w"> </span><span class="o">*</span><span class="n">item</span><span class="p">);</span>
<span class="cp">#endif </span><span class="cm">/* CGIT_CACHE_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 2025-04-09 05:13:07 +0000</div>
</div> <!-- id=cgit -->
</body>
</html>
should show a diff
* of the file, showing the diff stat limited to a single file is
* pretty useless. All links from this point on will be to
* individual files, so we simply reset the difftype in the query
* here to avoid propagating DIFF_STATONLY to the individual files.
*/
if (difftype == DIFF_STATONLY)
ctx.qry.difftype = ctx.cfg.difftype;
cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);
if (difftype == DIFF_STATONLY)
return;
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>");
if (show_ctrls)
cgit_print_layout_end();
}