add history and auto complete feature in finsh.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@54 bbd45198-f89e-11dd-88c7-29a3b14d5316

finsh/cmd.c

@@ -369,6 +369,112 @@ int list()
 }
 FINSH_FUNCTION_EXPORT(list, list all symbol in system)
 
+int str_is_prefix(const char* prefix, const char* str)
+{
+	while ((*prefix) && (*prefix == *str))
+	{
+		prefix ++;
+		str ++;
+	}
+
+	if (*prefix == 0) return 0;
+	return -1;
+}
+
+void list_prefix(char* prefix)
+{
+	struct finsh_syscall_item* syscall_item;
+	struct finsh_sysvar_item*  sysvar_item;
+	rt_uint16_t func_cnt, var_cnt;
+	const char* name_ptr;
+
+	func_cnt = 0;
+	var_cnt  = 0;
+	{
+		struct finsh_syscall* index;
+		for (index = _syscall_table_begin; index < _syscall_table_end; index ++)
+		{
+			if (str_is_prefix(prefix, index->name) == 0)
+			{
+				if (func_cnt == 0)
+					rt_kprintf("--function:\n");
+
+				func_cnt ++;
+				/* set name_ptr */
+				name_ptr = index->name;
+
+#ifdef FINSH_USING_DESCRIPTION
+				rt_kprintf("%-16s -- %s\n", index->name, index->desc);
+#else
+				rt_kprintf("%s\n", index->name);
+#endif
+			}
+		}
+	}
+
+	/* list syscall list */
+	syscall_item = global_syscall_list;
+	while (syscall_item != NULL)
+	{
+		if (str_is_prefix(prefix, syscall_item->syscall.name) == 0)
+		{
+			if (func_cnt == 0)
+				rt_kprintf("--function:\n");
+			func_cnt ++;
+			/* set name_ptr */
+			name_ptr = syscall_item->syscall.name;
+
+			rt_kprintf("[l] %s\n", syscall_item->syscall.name);
+		}
+		syscall_item = syscall_item->next;
+	}
+
+	{
+		struct finsh_sysvar* index;
+		for (index = _sysvar_table_begin; index < _sysvar_table_end; index ++)
+		{
+			if (str_is_prefix(prefix, index->name) == 0)
+			{
+				if (var_cnt == 0)
+					rt_kprintf("--variable:\n");
+
+				var_cnt ++;
+				/* set name ptr */
+				name_ptr = index->name;
+				
+#ifdef FINSH_USING_DESCRIPTION
+				rt_kprintf("%-16s -- %s\n", index->name, index->desc);
+#else
+				rt_kprintf("%s\n", index->name);
+#endif
+			}
+		}
+	}
+
+	sysvar_item = global_sysvar_list;
+	while (sysvar_item != NULL)
+	{
+		if (str_is_prefix(prefix, sysvar_item->sysvar.name) == 0)
+		{
+			if (var_cnt == 0)
+				rt_kprintf("--variable:\n");
+
+			var_cnt ++;
+			/* set name ptr */
+			name_ptr = sysvar_item->sysvar.name;
+
+			rt_kprintf("[l] %s\n", sysvar_item->sysvar.name);
+		}
+		sysvar_item = sysvar_item->next;
+	}
+	
+	/* only one matched */
+	if ((func_cnt + var_cnt) == 1)
+	{
+		rt_strncpy(prefix, name_ptr, strlen(name_ptr));
+	}
+}
+
 #ifdef FINSH_USING_SYMTAB
 static int dummy = 0;
 FINSH_VAR_EXPORT(dummy, finsh_type_int, dummy variable for finsh)