Add support for command shortcuts

So that distinct substrings of commands,
can be used as shortcuts.

3 files changed, 26 insertions, 1 deletions

diff --git a/src/commands.c b/src/commands.c
index 4683068..3e4e7aa 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -3,6 +3,7 @@
 #include "cmumble.h"
 
 #include <glib.h>
+#include <string.h>
 
 #include <readline/readline.h>
 #include <readline/history.h>
@@ -67,6 +68,24 @@ static const struct cmumble_command commands[] = {
 	{ NULL, NULL , NULL}
 };
 
+const char *
+cmumble_command_complete(const char *text)
+{
+	int i = 0;
+	int found_index = -1;
+
+	do {
+		if (strncmp(commands[i].name, text, strlen(text)) == 0) {
+			/* Found at least two matches, so do not complete. */
+			if (found_index >= 0)
+				return text;
+			found_index = i;
+		}
+	} while (commands[++i].name);
+
+	return found_index >= 0 ? commands[found_index].name : text;
+}
+
 void
 cmumble_commands_init(struct cmumble_context *ctx)
 {
diff --git a/src/commands.h b/src/commands.h
index c95f238..1c56860 100644
--- a/src/commands.h
+++ b/src/commands.h
@@ -12,4 +12,7 @@ struct cmumble_command {
 void
 cmumble_commands_init(struct cmumble_context *ctx);
 
+const char *
+cmumble_command_complete(const char *text);
+
 #endif /* _COMMANDS_H_ */
diff --git a/src/io.c b/src/io.c
index 7c69447..1d4d4ec 100644
--- a/src/io.c
+++ b/src/io.c
@@ -66,6 +66,7 @@ static void
 process_line(char *line)
 {
 	struct cmumble_context *ctx = global_rl_user_data;
+	const char *cmd;
 	int i;
 
 	g_assert(global_rl_user_data);
@@ -80,8 +81,10 @@ process_line(char *line)
 		return;
 	}
 
+	cmd = cmumble_command_complete(line);
+
 	for (i = 0; ctx->commands[i].name; ++i) {
-		if (strcmp(line, ctx->commands[i].name) == 0) {
+		if (strcmp(cmd, ctx->commands[i].name) == 0) {
 			ctx->commands[i].callback(ctx);
 			break;
 		}