[PATCH 10/11] config: add tree-readme list

[Andy Green]

Allows the user to specify a list of filenames that should be
rendered inline with tree view, if present in the directory.

Signed-off-by: Andy Green <andy at warmcat.com>
---
 cgit.c       |   11 ++++++++++-
 cgit.h       |    1 +
 cgitrc.5.txt |    7 +++++++
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/cgit.c b/cgit.c
index 975e573..017ce78 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1,6 +1,6 @@
 /* cgit.c: cgi for the git scm
  *
- * Copyright (C) 2006-2014 cgit Development Team <cgit at lists.zx2c4.com>
+ * Copyright (C) 2006-2018 cgit Development Team <cgit at lists.zx2c4.com>
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
@@ -39,6 +39,12 @@ static void add_render_filter(const char *name, const char *cmd)
 	item->util = filter;
 }
 
+static void add_tree_readme(const char *name)
+{
+	string_list_insert(&ctx.cfg.tree_readme, name);
+}
+
+
 static void process_cached_repolist(const char *path);
 
 static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
@@ -301,6 +307,8 @@ static void config_cb(const char *name, const char *value)
 		add_mimetype(name + 9, value);
 	else if (starts_with(name, "render."))
 		add_render_filter(name + 7, value);
+	else if (!strcmp(name, "tree-readme"))
+		add_tree_readme(value);
 	else if (!strcmp(name, "include"))
 		parse_configfile(expand_macros(value), config_cb);
 }
@@ -435,6 +443,7 @@ static void prepare_context(void)
 	ctx.page.etag = NULL;
 	string_list_init(&ctx.cfg.mimetypes, 1);
 	string_list_init(&ctx.cfg.render_filters, 1);
+	string_list_init(&ctx.cfg.tree_readme, 1);
 	if (ctx.env.script_name)
 		ctx.cfg.script_name = xstrdup(ctx.env.script_name);
 	if (ctx.env.query_string)
diff --git a/cgit.h b/cgit.h
index a19742f..1076568 100644
--- a/cgit.h
+++ b/cgit.h
@@ -261,6 +261,7 @@ struct cgit_config {
 	int branch_sort;
 	int commit_sort;
 	struct string_list mimetypes;
+	struct string_list tree_readme;
 	struct string_list render_filters;
 	struct cgit_filter *about_filter;
 	struct cgit_filter *commit_filter;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 793a0c1..5111197 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -469,6 +469,13 @@ strict-export::
 	repositories to match those exported by git-daemon. This option must
 	be defined prior to scan-path.
 
+tree-readme::
+	Append given filename to the list of filenames to be rendered after the
+	tree navigation in tree view, if present in the directory being viewed.  Eg,
+	'tree-readme=README.md'.  There must also be a corresponding render.
+	entry for the readme suffix, eg,
+	'render.md=/usr/libexec/cgit/filters/html-converters/md2html'
+
 virtual-root::
 	Url which, if specified, will be used as root for all cgit links. It
 	will also cause cgit to generate 'virtual urls', i.e. urls like