From 7dfc2b975fd4a735073536914f5a49b8d80a1104 Mon Sep 17 00:00:00 2001
From: Patrick
Date: Tue, 23 Dec 2025 23:35:13 +0100
Subject: buncha features

---
 cgithub/head-include.html | 10 ++++++++
 ui-blob.c                 |  1 -
 ui-summary.c              | 63 +++++++++++++++++++++++++++++++++--------------
 ui-summary.h              |  2 +-
 ui-tree.c                 | 25 ++++++++++++++++---
 5 files changed, 77 insertions(+), 24 deletions(-)

diff --git a/cgithub/head-include.html b/cgithub/head-include.html
index 204e078..df6e059 100644
--- a/cgithub/head-include.html
+++ b/cgithub/head-include.html
@@ -3,6 +3,16 @@
 <link rel="stylesheet" type="text/css" href="/git/static/cgithub/cgithub/github-markdown-dark.css"/>
 <link rel="stylesheet" type="text/css" href="/git/static/cgithub/cgithub/cgithub.css"/>
 <link rel="stylesheet" type="text/css" href="/git/static/cgithub/cgithub/prism-one-dark.css"/>
+<style>
+/* https://stackoverflow.com/a/20104746 */
+.tab-folder > .tab-content:target ~ .tab-content:last-child, .tab-folder > .tab-content {
+    display: none;
+}
+.tab-folder > :last-child, .tab-folder > .tab-content:target {
+    display: block;
+}
+
+</style>
 
 <script type="module">
     const blob = document.querySelector('div#cgit table.blob td.lines pre code');
diff --git a/ui-blob.c b/ui-blob.c
index cc88d76..3267ed1 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -72,7 +72,6 @@ int cgit_print_oid(const struct object_id *oid)
 	unsigned long size;
 
 	type = oid_object_info(the_repository, oid, &size);
-	html_txtf("trying to print %x<br/>", oid);
 	if (type == OBJ_BAD)
 		return -1;
 	buf = read_object_file(oid, &type, &size);
diff --git a/ui-summary.c b/ui-summary.c
index b3e5cc6..bf75039 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -155,42 +155,69 @@ done:
 // 			int stage, const struct pathspec *pathspec,
 // 			read_tree_fn_t fn, void *context);
 struct get_readme_oid_ctx {
-	const struct object_id *oid;
+	struct object_id *oid;
 	char **filename;
+	const char *path;
+	bool found;
 };
 static int get_readme_oid_cb(const struct object_id *oid, struct strbuf *base,
 		const char *pathname, unsigned mode, int stage, void *cbdata) {
 
+	struct get_readme_oid_ctx *ctx = (struct get_readme_oid_ctx*)cbdata;
+	
 	// TODO: make readme.md configurable
 	const char *readme_name = "readme.md";
-	html(pathname);
-	if (strcmp(pathname, readme_name) == 0) {
-		struct get_readme_oid_ctx *ctx = (struct get_readme_oid_ctx*)cbdata;
-		ctx->oid = oid;
+
+	struct strbuf buffer = STRBUF_INIT;
+	if (base->len > 0)
+		strbuf_addbuf(&buffer, base);
+
+	bool match_base = false;
+	if (ctx->path == NULL)
+		match_base = base->len == 0;
+	else if (strncmp(buffer.buf, ctx->path, buffer.len > 0 ? buffer.len - 1 : 0) == 0)
+		match_base = true;
+	
+	strbuf_addstr(&buffer, pathname);
+	
+	bool match_path = false;
+	if (ctx->path == NULL)
+		match_path = false;
+	else if (strcmp(buffer.buf, ctx->path) == 0)
+		match_path = true;
+	
+	strbuf_release(&buffer);
+
+	if (match_base && strcmp(pathname, readme_name) == 0) {
+		*(ctx->oid) = *oid;
 		*(ctx->filename) = xstrdup(pathname);
-		// TODO: maybe skip by returning != 0
+		ctx->found = true;
+	}
+	else if (match_path) {
+		return READ_TREE_RECURSIVE;
 	}
 
 	return 0;
 }
-const struct object_id * get_readme_oid(const struct tree *tree, char **filename) {
-	struct pathspec paths = {
-		.nr = 0
-	};
-	struct get_readme_oid_ctx ctx = { NULL, filename };
-	read_tree_recursive(the_repository, tree, "", 0, 1,
-		&paths, get_readme_oid_cb, &ctx);
-	return ctx.oid;
+bool get_readme_oid(const struct tree *tree, struct pathspec *paths, struct object_id *oid, char **filename) {
+	struct get_readme_oid_ctx gro_ctx = (struct get_readme_oid_ctx){
+		.oid = oid,
+		.filename = filename,
+		.path = (paths->nr == 1 ? paths->items[0].match : NULL),
+		.found = false };
+	read_tree_recursive(the_repository, tree, "", 0, 0,
+		paths, get_readme_oid_cb, &gro_ctx);
+	return gro_ctx.found;
 }
 
-void cgit_print_repo_readme_no_layout(const struct tree *tree)
+void cgit_print_repo_readme_no_layout(const struct tree *tree, struct pathspec *paths)
 {
 	char *filename = NULL;
-	const struct object_id *readme_oid = get_readme_oid(tree, &filename);
-	if (readme_oid) {
+	struct object_id readme_oid;
+	if (get_readme_oid(tree, paths, &readme_oid, &filename)) {
 		html("<div id='summary'>");
 		cgit_open_filter(ctx.repo->about_filter, filename);
-		cgit_print_oid(readme_oid);
+		cgit_print_oid(&readme_oid);
 		cgit_close_filter(ctx.repo->about_filter);
 
 		html("</div>");
diff --git a/ui-summary.h b/ui-summary.h
index 03ee5e4..29b6c1c 100644
--- a/ui-summary.h
+++ b/ui-summary.h
@@ -3,6 +3,6 @@
 
 extern void cgit_print_summary(void);
 extern void cgit_print_repo_readme(const char *path);
-extern void cgit_print_repo_readme_no_layout(const struct tree *tree);
+extern void cgit_print_repo_readme_no_layout(const struct tree *tree, struct pathspec *paths);
 
 #endif /* UI_SUMMARY_H */
diff --git a/ui-tree.c b/ui-tree.c
index 5e78f64..61049e7 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -23,6 +23,11 @@ static void print_text_buffer(const char *name, char *buf, unsigned long size)
 	unsigned long lineno, idx;
 	const char *numberfmt = "<a id='n%1$d' href='#n%1$d'>%1$d</a>\n";
 
+	bool is_markdown = (strncmp(".md", &name[strlen(name)-3], 3) == 0);
+	if (is_markdown) {
+		html("<div class=\"tab-folder\"><div id=\"code\" class=\"tab-content\">");
+	}
+
 	html("<table summary='blob content' class='blob'>\n");
 
 	if (ctx.cfg.enable_tree_linenumbers) {
@@ -58,6 +63,16 @@ static void print_text_buffer(const char *name, char *buf, unsigned long size)
 	html("<td class='lines'><pre><code>");
 	html_txt(buf);
 	html("</code></pre></td></tr></table>\n");
+
+	if (is_markdown) {
+		html("</div><div id=\"preview\" class=\"tab-content\">");
+
+		cgit_open_filter(ctx.repo->about_filter, name);
+		html_raw(buf, size);
+		cgit_close_filter(ctx.repo->about_filter);
+
+		html("</div></div>");
+	}
 }
 
 #define ROWLEN 32
@@ -109,6 +124,8 @@ static void print_object(const struct object_id *oid, const char *path, const ch
 
 	cgit_print_layout_start();
 	htmlf("blob: %s (", oid_to_hex(oid));
+	html("<a href=\"#preview\">preview</a>) (");
+	html("<a href=\"#code\">code</a>) (");
 	cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 		        rev, path);
 	if (ctx.repo->enable_blame) {
@@ -274,11 +291,11 @@ static void ls_head(void)
 	html("</tr>\n");
 }
 
-static void ls_tail(const struct tree *tree)
+static void ls_tail(const struct tree *tree, struct pathspec *paths)
 {
 	html("</table>\n");
 	if (tree)
-		cgit_print_repo_readme_no_layout(tree);
+		cgit_print_repo_readme_no_layout(tree, paths);
 	cgit_print_layout_end();
 }
 
@@ -299,7 +316,7 @@ static void ls_tree(const struct object_id *oid, const char *path, struct walk_t
 	ls_head();
 	read_tree_recursive(the_repository, tree, "", 0, 1,
 		&paths, ls_item, walk_tree_ctx);
-	ls_tail(tree);
+	ls_tail(tree, &paths);
 }
 
 
@@ -383,7 +400,7 @@ void cgit_print_tree(const char *rev, char *path)
 			    "", 0, 0,
 			    &paths, walk_tree, &walk_tree_ctx);
 	if (walk_tree_ctx.state == 1) {
-		ls_tail(tree);
+		ls_tail(tree, &paths);
 	}
 	else if (walk_tree_ctx.state == 2) {
 		cgit_print_layout_end();
-- 
cgit v1.2.3