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add command registration chaining

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Adds the ability to chain registration structures.  Modules can define a
command with the 'chain' and 'num_chain' fields defined in their
registration table, and the register_commands() function will initialize
these commands.  If the registration record creates a new command, then
the chained commands are created under it; otherwise, they are created
in the same context as the other commands (i.e. the parent argument).
This commit is contained in:
Zachary T Welch
2009-11-21 13:59:51 -08:00
parent 607634f967
commit 60ba4641d6
2 changed files with 37 additions and 8 deletions
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30
src/helper/command.c
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@@ -331,18 +331,36 @@ struct command* register_command(struct command_context *context,
int register_commands(struct command_context *cmd_ctx, struct command *parent,
const struct command_registration *cmds)
{
int retval = ERROR_OK;
unsigned i;
for (i = 0; cmds[i].name; i++)
for (i = 0; cmds[i].name || cmds[i].chain; i++)
{
struct command *c = register_command(cmd_ctx, parent, cmds + i);
if (NULL != c)
continue;
const struct command_registration *cr = cmds + i;
struct command *c = NULL;
if (NULL != cr->name)
{
c = register_command(cmd_ctx, parent, cr);
if (NULL == c)
{
retval = ERROR_FAIL;
break;
}
}
if (NULL != cr->chain)
{
struct command *p = c ? : parent;
retval = register_commands(cmd_ctx, p, cr->chain);
if (ERROR_OK != retval)
break;
}
}
if (ERROR_OK != retval)
{
for (unsigned j = 0; j < i; j++)
unregister_command(cmd_ctx, parent, cmds[j].name);
return ERROR_FAIL;
}
return ERROR_OK;
return retval;
}
int unregister_all_commands(struct command_context *context,