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Add a command queue to standardize and simplify commands that call other

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commands and allow a command to block execution of subsequent commands. This
allows run-shell and if-shell to be synchronous which has been much requested.

Each client has a default command queue and commands are consumed one at a time
from it. A command may suspend execution from the queue by returning
CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example
run-shell does this from the callback that is fired after the job is freed.

When the command queue becomes empty, command clients are automatically exited
(unless attaching). A callback is also fired - this is used for nested commands
in, for example, if-shell which can block execution of the client's cmdq until
a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the old
curclient/cmdclient distinction - a cmdq is bound to one client (or none if in
the configuration file), this is a command client if c->session is NULL
otherwise an attached client.
This commit is contained in:
Nicholas Marriott
2013-02-23 22:25:58 +00:00
parent 357da035b9
commit 3964309c67
86 changed files with 1218 additions and 1219 deletions
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8
cmd-list-commands.c
View File

@ -24,7 +24,7 @@
* List all commands with usages.
*/
enum cmd_retval cmd_list_commands_exec(struct cmd *, struct cmd_ctx *);
enum cmd_retval cmd_list_commands_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_list_commands_entry = {
"list-commands", "lscm",
@ -37,16 +37,16 @@ const struct cmd_entry cmd_list_commands_entry = {
};
enum cmd_retval
cmd_list_commands_exec(unused struct cmd *self, struct cmd_ctx *ctx)
cmd_list_commands_exec(unused struct cmd *self, struct cmd_q *cmdq)
{
const struct cmd_entry **entryp;
for (entryp = cmd_table; *entryp != NULL; entryp++) {
if ((*entryp)->alias != NULL) {
ctx->print(ctx, "%s (%s) %s", (*entryp)->name,
cmdq_print(cmdq, "%s (%s) %s", (*entryp)->name,
(*entryp)->alias, (*entryp)->usage);
} else {
ctx->print(ctx, "%s %s", (*entryp)->name,
cmdq_print(cmdq, "%s %s", (*entryp)->name,
(*entryp)->usage);
}
}