merge(third_party/cgit): Import at master of 2020-01-11

Imported commit '723dc8fbcb' as
'third_party/cgit'.

third_party/cgit/ui-summary.c

@@ -0,0 +1,148 @@
+/* ui-summary.c: functions for generating repo summary page
+ *
+ * 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-summary.h"
+#include "html.h"
+#include "ui-blob.h"
+#include "ui-log.h"
+#include "ui-plain.h"
+#include "ui-refs.h"
+#include "ui-shared.h"
+
+static int urls;
+
+static void print_url(const char *url)
+{
+	int columns = 3;
+
+	if (ctx.repo->enable_log_filecount)
+		columns++;
+	if (ctx.repo->enable_log_linecount)
+		columns++;
+
+	if (urls++ == 0) {
+		htmlf("<tr class='nohover'><td colspan='%d'>&nbsp;</td></tr>", columns);
+		htmlf("<tr class='nohover'><th class='left' colspan='%d'>Clone</th></tr>\n", columns);
+	}
+
+	htmlf("<tr><td colspan='%d'><a rel='vcs-git' href='", columns);
+	html_url_path(url);
+	html("' title='");
+	html_attr(ctx.repo->name);
+	html(" Git repository'>");
+	html_txt(url);
+	html("</a></td></tr>\n");
+}
+
+void cgit_print_summary(void)
+{
+	int columns = 3;
+
+	if (ctx.repo->enable_log_filecount)
+		columns++;
+	if (ctx.repo->enable_log_linecount)
+		columns++;
+
+	cgit_print_layout_start();
+	html("<table summary='repository info' class='list nowrap'>");
+	cgit_print_branches(ctx.cfg.summary_branches);
+	htmlf("<tr class='nohover'><td colspan='%d'>&nbsp;</td></tr>", columns);
+	cgit_print_tags(ctx.cfg.summary_tags);
+	if (ctx.cfg.summary_log > 0) {
+		htmlf("<tr class='nohover'><td colspan='%d'>&nbsp;</td></tr>", columns);
+		cgit_print_log(ctx.qry.head, 0, ctx.cfg.summary_log, NULL,
+			       NULL, NULL, 0, 0, 0);
+	}
+	urls = 0;
+	cgit_add_clone_urls(print_url);
+	html("</table>");
+	cgit_print_layout_end();
+}
+
+/* The caller must free the return value. */
+static char* append_readme_path(const char *filename, const char *ref, const char *path)
+{
+	char *file, *base_dir, *full_path, *resolved_base = NULL, *resolved_full = NULL;
+	/* If a subpath is specified for the about page, make it relative
+	 * to the directory containing the configured readme. */
+
+	file = xstrdup(filename);
+	base_dir = dirname(file);
+	if (!strcmp(base_dir, ".") || !strcmp(base_dir, "..")) {
+		if (!ref) {
+			free(file);
+			return NULL;
+		}
+		full_path = xstrdup(path);
+	} else
+		full_path = fmtalloc("%s/%s", base_dir, path);
+
+	if (!ref) {
+		resolved_base = realpath(base_dir, NULL);
+		resolved_full = realpath(full_path, NULL);
+		if (!resolved_base || !resolved_full || !starts_with(resolved_full, resolved_base)) {
+			free(full_path);
+			full_path = NULL;
+		}
+	}
+
+	free(file);
+	free(resolved_base);
+	free(resolved_full);
+
+	return full_path;
+}
+
+void cgit_print_repo_readme(const char *path)
+{
+	char *filename, *ref, *mimetype;
+	int free_filename = 0;
+
+	mimetype = get_mimetype_for_filename(path);
+	if (mimetype && (!strncmp(mimetype, "image/", 6) || !strncmp(mimetype, "video/", 6))) {
+		ctx.page.mimetype = mimetype;
+		ctx.page.charset = NULL;
+		cgit_print_plain();
+		free(mimetype);
+		return;
+	}
+	free(mimetype);
+
+	cgit_print_layout_start();
+	if (ctx.repo->readme.nr == 0)
+		goto done;
+
+	filename = ctx.repo->readme.items[0].string;
+	ref = ctx.repo->readme.items[0].util;
+
+	if (path) {
+		free_filename = 1;
+		filename = append_readme_path(filename, ref, path);
+		if (!filename)
+			goto done;
+	}
+
+	/* Print the calculated readme, either from the git repo or from the
+	 * filesystem, while applying the about-filter.
+	 */
+	html("<div id='summary'>");
+	cgit_open_filter(ctx.repo->about_filter, filename);
+	if (ref)
+		cgit_print_file(filename, ref, 1);
+	else
+		html_include(filename);
+	cgit_close_filter(ctx.repo->about_filter);
+
+	html("</div>");
+	if (free_filename)
+		free(filename);
+
+done:
+	cgit_print_layout_end();
+}