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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-delete-buffer.c
View File

@ -26,7 +26,7 @@
* Delete a paste buffer.
*/
enum cmd_retval cmd_delete_buffer_exec(struct cmd *, struct cmd_ctx *);
enum cmd_retval cmd_delete_buffer_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_delete_buffer_entry = {
"delete-buffer", "deleteb",
@ -39,7 +39,7 @@ const struct cmd_entry cmd_delete_buffer_entry = {
};
enum cmd_retval
cmd_delete_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
cmd_delete_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
char *cause;
@ -52,13 +52,13 @@ cmd_delete_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
if (cause != NULL) {
ctx->error(ctx, "buffer %s", cause);
cmdq_error(cmdq, "buffer %s", cause);
free(cause);
return (CMD_RETURN_ERROR);
}
if (paste_free_index(&global_buffers, buffer) != 0) {
ctx->error(ctx, "no buffer %d", buffer);
cmdq_error(cmdq, "no buffer %d", buffer);
return (CMD_RETURN_ERROR);
}