Prepare session-metadata export to external command

1 files changed, 33 insertions, 0 deletions

diff --git a/libs/pbd/system_exec.cc b/libs/pbd/system_exec.cc
index cc5d8d99fe..26f50146c8 100644
--- a/libs/pbd/system_exec.cc
+++ b/libs/pbd/system_exec.cc
@@ -236,6 +236,39 @@ SystemExec::SystemExec (std::string command, const std::map<char, std::string> s
 	make_envp();
 }
 
+char*
+SystemExec::format_key_value_parameter (std::string key, std::string value)
+{
+	size_t start_pos = 0;
+	std::string v1 = value;
+	while((start_pos = v1.find_first_not_of(
+			"abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789(),.\"'",
+			start_pos)) != std::string::npos)
+	{
+		v1.replace(start_pos, 1, "_");
+		start_pos += 1;
+	}
+
+	start_pos = 0;
+	while((start_pos = v1.find("\"", start_pos)) != std::string::npos) {
+		v1.replace(start_pos, 1, "\\\"");
+		start_pos += 2;
+	}
+
+	size_t len = key.length() + v1.length() + 4;
+	char *mds = (char*) calloc(len, sizeof(char));
+#ifdef PLATFORM_WINDOWS
+	/* SystemExec::make_wargs() adds quotes around the complete argument
+	 * windows uses CreateProcess() with a parameter string
+	 * (and not an array list of separate arguments)
+	 */
+	snprintf(mds, len, "%s=%s", key.c_str(), v1.c_str());
+#else
+	snprintf(mds, len, "%s=\"%s\"", key.c_str(), v1.c_str());
+#endif
+	return mds;
+}
+
 void
 SystemExec::make_argp_escaped(std::string command, const std::map<char, std::string> subs)
 {