save and restore clock modes

git-svn-id: svn://localhost/ardour2/trunk@1283 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/ardour/ardour/location.h

@@ -153,6 +153,7 @@ class Locations : public PBD::StatefulDestructible
 	Location* end_location() const;
 	Location* start_location() const;
 
+	int next_available_name(string& result,string base);
 	uint32_t num_range_markers() const;
 
 	int set_current (Location *, bool want_lock = true);

libs/ardour/ardour/session.h

@@ -392,6 +392,7 @@ class Session : public PBD::StatefulDestructible
 
 	void set_auto_punch_location (Location *);
 	void set_auto_loop_location (Location *);
+	int location_name(string& result, string base = string(""));
 
 	void reset_input_monitor_state ();
 

libs/ardour/location.cc

@@ -36,6 +36,8 @@
 
 #include "i18n.h"
 
+#define SUFFIX_MAX 32
+
 using namespace std;
 using namespace ARDOUR;
 using namespace sigc;
@@ -401,6 +403,40 @@ Locations::set_current (Location *loc, bool want_lock)
 	return ret;
 }
 
+int
+Locations::next_available_name(string& result,string base)
+{
+	LocationList::iterator i;
+	Location* location;
+	string temp;
+	string::size_type l;
+	int suffix;
+	char buf[32];
+	bool available[SUFFIX_MAX+1];
+
+	result = base;
+	for (int k=1; k<SUFFIX_MAX; k++) {
+		available[k] = true;
+	}
+	l = base.length();
+	for (i = locations.begin(); i != locations.end(); ++i) {
+		location =* i;
+		temp = location->name();
+		if (l && !temp.find(base,0)) {
+			suffix = atoi(temp.substr(l,3));
+			if (suffix) available[suffix] = false;
+		}
+	}
+	for (int k=1; k<=SUFFIX_MAX; k++) {
+		if (available[k]) { 
+			snprintf (buf, 31, "%d", k);
+			result += buf;
+			return 1;
+		}
+	}
+	return 0;
+}
+
 int
 Locations::set_current_unlocked (Location *loc)
 {