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