Add support for OSC 8 hyperlinks (HTML-like anchors)

backport of 1c6f8db736efc62d9a9b38bfbc43ec03c8544696
from gnome-terminal

1 files changed, 50 insertions, 0 deletions

diff --git a/src/terminal-util.c b/src/terminal-util.c
index ede72da..d0f1864 100644
--- a/src/terminal-util.c
+++ b/src/terminal-util.c
@@ -22,6 +22,7 @@
 
 #include <config.h>
 
+#define _GNU_SOURCE /* for strchrnul */
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -707,6 +708,55 @@ terminal_util_add_proxy_env (GHashTable *env_table)
 	g_object_unref (settings_socks);
 }
 
+/**
+ * terminal_util_hyperlink_uri_label:
+ * @uri: a URI
+ *
+ * Formats @uri to be displayed in a tooltip.
+ * Performs URI-decoding and converts IDN hostname to UTF-8.
+ *
+ * Returns: (transfer full): The human readable URI as plain text
+ */
+char *terminal_util_hyperlink_uri_label (const char *uri)
+{
+	char *unesc = NULL;
+	gboolean replace_hostname;
+
+	if (uri == NULL)
+		return NULL;
+
+	unesc = g_uri_unescape_string(uri, NULL);
+	if (unesc == NULL)
+		unesc = g_strdup(uri);
+
+	if (g_ascii_strncasecmp(unesc, "ftp://", 6) == 0 ||
+		g_ascii_strncasecmp(unesc, "http://", 7) == 0 ||
+		g_ascii_strncasecmp(unesc, "https://", 8) == 0)
+	{
+		char *unidn = NULL;
+
+		char *hostname = strchr(unesc, '/') + 2;
+		char *hostname_end = strchrnul(hostname, '/');
+		char save = *hostname_end;
+		*hostname_end = '\0';
+		unidn = g_hostname_to_unicode(hostname);
+		replace_hostname = unidn != NULL && g_ascii_strcasecmp(unidn, hostname) != 0;
+		*hostname_end = save;
+		if (replace_hostname)
+		{
+			char *new_unesc = g_strdup_printf("%.*s%s%s",
+			                                  (int) (hostname - unesc),
+			                                  unesc,
+			                                  unidn,
+			                                  hostname_end);
+			g_free(unesc);
+			unesc = new_unesc;
+		}
+		g_free(unidn);
+	}
+	return unesc;
+}
+
 /* Bidirectional object/widget binding */
 
 typedef struct