Initial revision

svn-id: r4785

1 files changed, 87 insertions, 0 deletions

diff --git a/scumm/debugrl.cpp b/scumm/debugrl.cpp
new file mode 100644
index 0000000000..8c9366a2f4
--- /dev/null
+++ b/scumm/debugrl.cpp
@@ -0,0 +1,87 @@
+#ifdef HAVE_READLINE
+
+#include "debugrl.h"
+
+// A lot of this was ripped straight from the readline fileman.c example.
+
+char *_debugger_commands[] = {
+	"help",
+	"quit",
+	"go",
+	"actor",
+	"scripts",
+	"exit",
+	(char *)NULL
+};
+
+
+// forwards decls
+char **scumm_debugger_completion(const char *text, int start, int end);
+char *scumm_debugger_command_generator(const char *text, int state);
+
+void initialize_readline()
+{
+	/* Allow conditional parsing of the ~/.inputrc file. */
+	rl_readline_name = "scummvm";
+
+	/* Tell the completer that we want a crack first. */
+	rl_attempted_completion_function = scumm_debugger_completion;
+}
+
+char **scumm_debugger_completion(const char *text, int start, int end)
+{
+
+	char **matches;
+
+	matches = (char **)NULL;
+
+	// If this word is at the start of the line, then it is a command
+	// to complete.
+	if (start == 0) {
+		matches = rl_completion_matches(text, scumm_debugger_command_generator);
+	} else {
+		// At some stage it'd be nice to have symbolic actor name completion
+		// or something similarly groovy. Not right now though.
+	}
+
+	// This just makes sure that readline doesn't try to use its default
+	// completer, which uses filenames in the current dir, if we can't find 
+	// a match, since filenames don't have much use in the debuger :)
+	// There's probably a nice way to do this once, rather than every time.
+	rl_attempted_completion_over = 1;
+
+	return (matches);
+}
+
+
+/* Generator function for command completion.  STATE lets us know whether
+   to start from scratch; without any state (i.e. STATE == 0), then we
+   start at the top of the list. */
+char *scumm_debugger_command_generator(const char *text, int state)
+{
+
+	static int list_index, len;
+	char *name;
+
+	/* If this is a new word to complete, initialize now.  This includes
+	   saving the length of TEXT for efficiency, and initializing the index
+	   variable to 0. */
+	if (!state) {
+		list_index = 0;
+		len = strlen(text);
+	}
+
+	/* Return the next name which partially matches from the command list. */
+	while (name = _debugger_commands[list_index]) {
+		list_index++;
+
+		if (strncmp(name, text, len) == 0)
+			//return (dupstr(name));
+			return strdup(name);
+	}
+
+	/* If no names matched, then return NULL. */
+	return ((char *)NULL);
+}
+
+#endif /* HAVE_READLINE */