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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <pulse/xmalloc.h>
#include <pulsecore/core-util.h>
#include <pulsecore/ioline.h>
#include <pulsecore/module.h>
#include <pulsecore/client.h>
#include <pulsecore/tokenizer.h>
#include <pulsecore/strbuf.h>
#include <pulsecore/cli-text.h>
#include <pulsecore/cli-command.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include "cli.h"
#define PROMPT ">>> "
struct pa_cli {
pa_core *core;
pa_ioline *line;
pa_cli_eof_cb_t eof_callback;
void *userdata;
pa_client *client;
bool fail, kill_requested;
int defer_kill;
bool interactive;
char *last_line;
};
static void line_callback(pa_ioline *line, const char *s, void *userdata);
static void client_kill(pa_client *c);
pa_cli* pa_cli_new(pa_core *core, pa_iochannel *io, pa_module *m) {
char cname[256];
pa_cli *c;
pa_client_new_data data;
pa_client *client;
pa_assert(io);
pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
pa_client_new_data_init(&data);
data.driver = __FILE__;
data.module = m;
pa_proplist_sets(data.proplist, PA_PROP_APPLICATION_NAME, cname);
client = pa_client_new(core, &data);
pa_client_new_data_done(&data);
if (!client)
return NULL;
c = pa_xnew0(pa_cli, 1);
c->core = core;
c->client = client;
pa_assert_se(c->line = pa_ioline_new(io));
c->client->kill = client_kill;
c->client->userdata = c;
pa_ioline_set_callback(c->line, line_callback, c);
return c;
}
void pa_cli_free(pa_cli *c) {
pa_assert(c);
pa_ioline_close(c->line);
pa_ioline_unref(c->line);
pa_client_free(c->client);
pa_xfree(c->last_line);
pa_xfree(c);
}
static void client_kill(pa_client *client) {
pa_cli *c;
pa_assert(client);
pa_assert_se(c = client->userdata);
pa_log_debug("CLI client killed.");
if (c->defer_kill)
c->kill_requested = true;
else if (c->eof_callback)
c->eof_callback(c, c->userdata);
}
static void line_callback(pa_ioline *line, const char *s, void *userdata) {
pa_strbuf *buf;
pa_cli *c = userdata;
char *p;
pa_assert(line);
pa_assert(c);
if (!s) {
pa_log_debug("CLI got EOF from user.");
if (c->eof_callback)
c->eof_callback(c, c->userdata);
return;
}
/* Magic command, like they had in AT Hayes Modems! Those were the good days! */
if (pa_streq(s, "/"))
s = c->last_line;
else if (s[0]) {
pa_xfree(c->last_line);
c->last_line = pa_xstrdup(s);
}
pa_assert_se(buf = pa_strbuf_new());
c->defer_kill++;
if (pa_streq(s, "hello")) {
pa_strbuf_printf(buf, "Welcome to PulseAudio %s! "
"Use \"help\" for usage information.\n", PACKAGE_VERSION);
c->interactive = true;
}
else
pa_cli_command_execute_line(c->core, s, buf, &c->fail);
c->defer_kill--;
pa_ioline_puts(line, p = pa_strbuf_tostring_free(buf));
pa_xfree(p);
if (c->kill_requested) {
if (c->eof_callback)
c->eof_callback(c, c->userdata);
} else if (c->interactive)
pa_ioline_puts(line, PROMPT);
}
void pa_cli_set_eof_callback(pa_cli *c, pa_cli_eof_cb_t cb, void *userdata) {
pa_assert(c);
c->eof_callback = cb;
c->userdata = userdata;
}
pa_module *pa_cli_get_module(pa_cli *c) {
pa_assert(c);
return c->client->module;
}
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