From 90a141be2b0aa79bbc18976da7809921eea43d4e Mon Sep 17 00:00:00 2001
From: sgerwk <sgerwk@aol.com>
Date: Mon, 28 Sep 2020 20:10:55 +0200
Subject: [PATCH] meaningful default save name for data: uri content

---
 src/protocol/uri.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/protocol/uri.c b/src/protocol/uri.c
index 2271892b..56fbe0cf 100644
--- a/src/protocol/uri.c
+++ b/src/protocol/uri.c
@@ -611,6 +611,14 @@ add_uri_to_string(struct string *string, const struct uri *uri,
 
 		if (!uri->datalen) return string;
 
+		if (uri->protocol == PROTOCOL_DATA) {
+			char *e;
+			add_bytes_to_string(string,
+				"data", sizeof("data") - 1);
+			e = get_extension_from_uri((struct uri *) uri);
+			return add_bytes_to_string(string, e, strlen(e));
+		}
+
 		for (pos = filename; *pos && !end_of_dir(*pos); pos++)
 			if (wants(URI_FILENAME) && is_uri_dir_sep(uri, *pos))
 				filename = pos + 1;
@@ -1316,6 +1324,10 @@ get_translated_uri(unsigned char *uristring, unsigned char *cwd)
 	return uri;
 }
 
+#define ADD_EXTENSION_FROM_TYPE(string, type, ext)			\
+	if (!memcmp(uri->data, type ";", sizeof(type ";") - 1)	||	\
+	    !memcmp(uri->data, type ",", sizeof(type ",") - 1))		\
+		return strdup("." ext);
 
 unsigned char *
 get_extension_from_uri(struct uri *uri)
@@ -1326,6 +1338,15 @@ get_extension_from_uri(struct uri *uri)
 
 	assert(pos);
 
+	if (uri->protocol == PROTOCOL_DATA) {
+		ADD_EXTENSION_FROM_TYPE(uri->data, "image/gif",  "gif")
+		ADD_EXTENSION_FROM_TYPE(uri->data, "image/jpeg", "jpg")
+		ADD_EXTENSION_FROM_TYPE(uri->data, "image/png",  "png")
+		ADD_EXTENSION_FROM_TYPE(uri->data, "text/plain", "txt")
+		ADD_EXTENSION_FROM_TYPE(uri->data, "text/html",  "html")
+		return "";
+	}
+
 	for (; *pos && !end_of_dir(*pos); pos++) {
 		if (!afterslash && !extension && *pos == '.') {
 			extension = pos;