[pulseaudio] / src / polypcore / cli-command.c

/* $Id$ */

/***
  This file is part of polypaudio.
 
  polypaudio 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 of the License,
  or (at your option) any later version.
 
  polypaudio 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 polypaudio; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include <errno.h>

#include "cli-command.h"
#include "module.h"
#include "sink.h"
#include "source.h"
#include "client.h"
#include "sink-input.h"
#include "source-output.h"
#include "tokenizer.h"
#include "strbuf.h"
#include "namereg.h"
#include "cli-text.h"
#include "core-scache.h"
#include "sample-util.h"
#include "sound-file.h"
#include "play-memchunk.h"
#include "autoload.h"
#include "xmalloc.h"
#include "sound-file-stream.h"
#include "props.h"
#include "util.h"

struct command {
    const char *name;
    int (*proc) (pa_core *c, pa_tokenizer*t, pa_strbuf *buf, int *fail);
    const char *help;
    unsigned args;
};

#define INCLUDE_META ".include"
#define FAIL_META ".fail"
#define NOFAIL_META ".nofail"

/* Prototypes for all available commands */
static int pa_cli_command_exit(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_help(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_modules(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_clients(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_sinks(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_sources(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_sink_inputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_source_outputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_stat(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_info(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_unload(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_sink_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_sink_input_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_sink_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_source_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_kill_client(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_kill_sink_input(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_kill_source_output(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_scache_play(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_scache_remove(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_scache_list(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_scache_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_scache_load_dir(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_play_file(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_autoload_list(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_autoload_add(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_autoload_remove(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_dump(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);
static int pa_cli_command_list_props(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail);


/* A method table for all available commands */

static const struct command commands[] = {
    { "exit",                    pa_cli_command_exit,               "Terminate the daemon",         1 },
    { "help",                    pa_cli_command_help,               "Show this help",               1 },
    { "list-modules",            pa_cli_command_modules,            "List loaded modules",          1 },
    { "list-sinks",              pa_cli_command_sinks,              "List loaded sinks",            1 },
    { "list-sources",            pa_cli_command_sources,            "List loaded sources",          1 },
    { "list-clients",            pa_cli_command_clients,            "List loaded clients",          1 },
    { "list-sink-inputs",        pa_cli_command_sink_inputs,        "List sink inputs",             1 },
    { "list-source-outputs",     pa_cli_command_source_outputs,     "List source outputs",          1 },
    { "stat",                    pa_cli_command_stat,               "Show memory block statistics", 1 },
    { "info",                    pa_cli_command_info,               "Show comprehensive status",    1 },
    { "ls",                      pa_cli_command_info,               NULL,                           1 },
    { "list",                    pa_cli_command_info,               NULL,                           1 },
    { "load-module",             pa_cli_command_load,               "Load a module (args: name, arguments)",                     3},
    { "unload-module",           pa_cli_command_unload,             "Unload a module (args: index)",                             2},
    { "set-sink-volume",         pa_cli_command_sink_volume,        "Set the volume of a sink (args: index|name, volume)",             3},
    { "set-sink-input-volume",   pa_cli_command_sink_input_volume,  "Set the volume of a sink input (args: index|name, volume)", 3},
    { "set-default-sink",        pa_cli_command_sink_default,       "Set the default sink (args: index|name)", 2},
    { "set-default-source",      pa_cli_command_source_default,     "Set the default source (args: index|name)", 2},
    { "kill-client",             pa_cli_command_kill_client,        "Kill a client (args: index)", 2},
    { "kill-sink-input",         pa_cli_command_kill_sink_input,    "Kill a sink input (args: index)", 2},
    { "kill-source-output",      pa_cli_command_kill_source_output, "Kill a source output (args: index)", 2},
    { "list-samples",            pa_cli_command_scache_list,        "List all entries in the sample cache", 1},
    { "play-sample",             pa_cli_command_scache_play,        "Play a sample from the sample cache (args: name, sink|index)", 3},
    { "remove-sample",           pa_cli_command_scache_remove,      "Remove a sample from the sample cache (args: name)", 2},
    { "load-sample",             pa_cli_command_scache_load,        "Load a sound file into the sample cache (args: name, filename)", 3},
    { "load-sample-lazy",        pa_cli_command_scache_load,        "Lazily load a sound file into the sample cache (args: name, filename)", 3},
    { "load-sample-dir-lazy",    pa_cli_command_scache_load_dir,    "Lazily load all files in a directory into the sample cache (args: pathname)", 2},
    { "play-file",               pa_cli_command_play_file,          "Play a sound file (args: filename, sink|index)", 3},
    { "list-autoload",           pa_cli_command_autoload_list,      "List autoload entries", 1},
    { "add-autoload-sink",       pa_cli_command_autoload_add,       "Add autoload entry for a sink (args: sink, module name, arguments)", 4},
    { "add-autoload-source",     pa_cli_command_autoload_add,       "Add autoload entry for a source (args: source, module name, arguments)", 4},
    { "remove-autoload-sink",    pa_cli_command_autoload_remove,    "Remove autoload entry for a sink (args: name)", 2},
    { "remove-autoload-source",  pa_cli_command_autoload_remove,    "Remove autoload entry for a source (args: name)", 2},
    { "dump",                    pa_cli_command_dump,               "Dump daemon configuration", 1},
    { "list-props",              pa_cli_command_list_props,         NULL, 1},
    { NULL, NULL, NULL, 0 }
};

static const char whitespace[] = " \t\n\r";
static const char linebreak[] = "\n\r";

static uint32_t parse_index(const char *n) {
    uint32_t idx;

    if (pa_atou(n, &idx) < 0)
        return (uint32_t) PA_IDXSET_INVALID;

    return idx;
}

static int pa_cli_command_exit(pa_core *c, pa_tokenizer *t, PA_GCC_UNUSED pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    assert(c && c->mainloop && t);
    c->mainloop->quit(c->mainloop, 0);
    return 0;
}

static int pa_cli_command_help(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const struct command*command;
    assert(c && t && buf);

    pa_strbuf_puts(buf, "Available commands:\n");
    
    for (command = commands; command->name; command++)
        if (command->help)
            pa_strbuf_printf(buf, "    %-25s %s\n", command->name, command->help);
    return 0;
}

static int pa_cli_command_modules(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_module_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_clients(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_client_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_sinks(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_sink_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_sources(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_source_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_sink_inputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_sink_input_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_source_outputs(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_source_output_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_stat(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char s[256];
    assert(c && t);

    pa_bytes_snprint(s, sizeof(s), c->memblock_stat->total_size);
    pa_strbuf_printf(buf, "Memory blocks currently allocated: %u, size: %s.\n",
                     c->memblock_stat->total,
                     s);

    pa_bytes_snprint(s, sizeof(s), c->memblock_stat->allocated_size);
    pa_strbuf_printf(buf, "Memory blocks allocated during the whole lifetime: %u, size: %s.\n",
                     c->memblock_stat->allocated,
                     s);

    pa_bytes_snprint(s, sizeof(s), pa_scache_total_size(c));
    pa_strbuf_printf(buf, "Total sample cache size: %s.\n", s);

    pa_sample_spec_snprint(s, sizeof(s), &c->default_sample_spec);
    pa_strbuf_printf(buf, "Default sample spec: %s\n", s);

    pa_strbuf_printf(buf, "Default sink name: %s\n"
                     "Default source name: %s\n",
                     pa_namereg_get_default_sink_name(c),
                     pa_namereg_get_default_source_name(c));

    return 0;
}

static int pa_cli_command_info(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    assert(c && t);
    pa_cli_command_stat(c, t, buf, fail);
    pa_cli_command_modules(c, t, buf, fail);
    pa_cli_command_sinks(c, t, buf, fail);
    pa_cli_command_sources(c, t, buf, fail);
    pa_cli_command_clients(c, t, buf, fail);
    pa_cli_command_sink_inputs(c, t, buf, fail);
    pa_cli_command_source_outputs(c, t, buf, fail);
    pa_cli_command_scache_list(c, t, buf, fail);
    pa_cli_command_autoload_list(c, t, buf, fail);
    return 0;
}

static int pa_cli_command_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    pa_module *m;
    const char *name;
    assert(c && t);

    if (!(name = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify the module name and optionally arguments.\n");
        return -1;
    }
    
    if (!(m = pa_module_load(c, name,  pa_tokenizer_get(t, 2)))) {
        pa_strbuf_puts(buf, "Module load failed.\n");
        return -1;
    }

    return 0;
}

static int pa_cli_command_unload(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    pa_module *m;
    uint32_t idx;
    const char *i;
    char *e;
    assert(c && t);

    if (!(i = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify the module index.\n");
        return -1;
    }

    idx = (uint32_t) strtoul(i, &e, 10);
    if (*e || !(m = pa_idxset_get_by_index(c->modules, idx))) {
        pa_strbuf_puts(buf, "Invalid module index.\n");
        return -1;
    }

    pa_module_unload_request(m);
    return 0;
}

static int pa_cli_command_sink_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n, *v;
    pa_sink *sink;
    uint32_t volume;
    pa_cvolume cvolume;

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x100 is normal volume)\n");
        return -1;
    }

    if (pa_atou(v, &volume) < 0) {
        pa_strbuf_puts(buf, "Failed to parse volume.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK, 1))) {
        pa_strbuf_puts(buf, "No sink found by this name or index.\n");
        return -1;
    }

    pa_cvolume_set(&cvolume, sink->sample_spec.channels, volume);
    pa_sink_set_volume(sink, PA_MIXER_HARDWARE, &cvolume);
    return 0;
}

static int pa_cli_command_sink_input_volume(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n, *v;
    pa_sink_input *si;
    pa_volume_t volume;
    pa_cvolume cvolume;
    uint32_t idx;

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(v = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x100 is normal volume)\n");
        return -1;
    }

    if (pa_atou(v, &volume) < 0) {
        pa_strbuf_puts(buf, "Failed to parse volume.\n");
        return -1;
    }

    if (!(si = pa_idxset_get_by_index(c->sink_inputs, (uint32_t) idx))) {
        pa_strbuf_puts(buf, "No sink input found with this index.\n");
        return -1;
    }

    pa_cvolume_set(&cvolume, si->sample_spec.channels, volume);
    pa_sink_input_set_volume(si, &cvolume);
    return 0;
}

static int pa_cli_command_sink_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n;
    assert(c && t);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
        return -1;
    }

    pa_namereg_set_default(c, n, PA_NAMEREG_SINK);
    return 0;
}

static int pa_cli_command_source_default(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n;
    assert(c && t);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
        return -1;
    }

    pa_namereg_set_default(c, n, PA_NAMEREG_SOURCE);
    return 0;
}

static int pa_cli_command_kill_client(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n;
    pa_client *client;
    uint32_t idx;
    assert(c && t);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a client by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(client = pa_idxset_get_by_index(c->clients, idx))) {
        pa_strbuf_puts(buf, "No client found by this index.\n");
        return -1;
    }

    pa_client_kill(client);
    return 0;
}

static int pa_cli_command_kill_sink_input(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n;
    pa_sink_input *sink_input;
    uint32_t idx;
    assert(c && t);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(sink_input = pa_idxset_get_by_index(c->sink_inputs, idx))) {
        pa_strbuf_puts(buf, "No sink input found by this index.\n");
        return -1;
    }

    pa_sink_input_kill(sink_input);
    return 0;
}

static int pa_cli_command_kill_source_output(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    const char *n;
    pa_source_output *source_output;
    uint32_t idx;
    assert(c && t);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
        return -1;
    }

    if ((idx = parse_index(n)) == PA_IDXSET_INVALID) {
        pa_strbuf_puts(buf, "Failed to parse index.\n");
        return -1;
    }

    if (!(source_output = pa_idxset_get_by_index(c->source_outputs, idx))) {
        pa_strbuf_puts(buf, "No source output found by this index.\n");
        return -1;
    }

    pa_source_output_kill(source_output);
    return 0;
}

static int pa_cli_command_scache_list(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_scache_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_scache_play(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *n, *sink_name;
    pa_sink *sink;
    assert(c && t && buf && fail);

    if (!(n = pa_tokenizer_get(t, 1)) || !(sink_name = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a sample name and a sink name.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK, 1))) {
        pa_strbuf_puts(buf, "No sink by that name.\n");
        return -1;
    }

    if (pa_scache_play_item(c, n, sink, NULL) < 0) {
        pa_strbuf_puts(buf, "Failed to play sample.\n");
        return -1;
    }

    return 0;
}

static int pa_cli_command_scache_remove(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *n;
    assert(c && t && buf && fail);

    if (!(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a sample name.\n");
        return -1;
    }

    if (pa_scache_remove_item(c, n) < 0) {
        pa_strbuf_puts(buf, "Failed to remove sample.\n");
        return -1;
    }

    return 0;
}

static int pa_cli_command_scache_load(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *fname, *n;
    int r;
    assert(c && t && buf && fail);

    if (!(fname = pa_tokenizer_get(t, 2)) || !(n = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a file name and a sample name.\n");
        return -1;
    }

    if (strstr(pa_tokenizer_get(t, 0), "lazy"))
        r = pa_scache_add_file_lazy(c, n, fname, NULL);
    else
        r = pa_scache_add_file(c, n, fname, NULL);

    if (r < 0)
        pa_strbuf_puts(buf, "Failed to load sound file.\n");

    return 0;
}

static int pa_cli_command_scache_load_dir(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *pname;
    assert(c && t && buf && fail);

    if (!(pname = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a path name.\n");
        return -1;
    }

    if (pa_scache_add_directory_lazy(c, pname) < 0) {
        pa_strbuf_puts(buf, "Failed to load directory.\n");
        return -1;
    }

    return 0;
}

static int pa_cli_command_play_file(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *fname, *sink_name;
    pa_sink *sink;
    assert(c && t && buf && fail);

    if (!(fname = pa_tokenizer_get(t, 1)) || !(sink_name = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a file name and a sink name.\n");
        return -1;
    }

    if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK, 1))) {
        pa_strbuf_puts(buf, "No sink by that name.\n");
        return -1;
    }


    return pa_play_file(sink, fname, NULL);
}

static int pa_cli_command_autoload_add(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *a, *b;
    assert(c && t && buf && fail);

    if (!(a = pa_tokenizer_get(t, 1)) || !(b = pa_tokenizer_get(t, 2))) {
        pa_strbuf_puts(buf, "You need to specify a device name, a filename or a module name and optionally module arguments\n");
        return -1;
    }

    pa_autoload_add(c, a, strstr(pa_tokenizer_get(t, 0), "sink") ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE, b, pa_tokenizer_get(t, 3), NULL);
    
    return 0;
}

static int pa_cli_command_autoload_remove(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, int *fail) {
    const char *name;
    assert(c && t && buf && fail);
    
    if (!(name = pa_tokenizer_get(t, 1))) {
        pa_strbuf_puts(buf, "You need to specify a device name\n");
        return -1;
    }

    if (pa_autoload_remove_by_name(c, name, strstr(pa_tokenizer_get(t, 0), "sink") ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE) < 0) {
        pa_strbuf_puts(buf, "Failed to remove autload entry\n");
        return -1;
    }

    return 0;        
}

static int pa_cli_command_autoload_list(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    char *s;
    assert(c && t);
    s = pa_autoload_list_to_string(c);
    assert(s);
    pa_strbuf_puts(buf, s);
    pa_xfree(s);
    return 0;
}

static int pa_cli_command_list_props(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    assert(c && t);
    pa_property_dump(c, buf);
    return 0;
}

static int pa_cli_command_dump(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, PA_GCC_UNUSED int *fail) {
    pa_module *m;
    pa_sink *s;
    int nl;
    const char *p;
    uint32_t idx;
    char txt[256];
    time_t now;
    void *i;
    pa_autoload_entry *a;
    
    assert(c && t);

    time(&now);

#ifdef HAVE_CTIME_R
    pa_strbuf_printf(buf, "### Configuration dump generated at %s\n", ctime_r(&now, txt));
#else
    pa_strbuf_printf(buf, "### Configuration dump generated at %s\n", ctime(&now));
#endif

    
    for (m = pa_idxset_first(c->modules, &idx); m; m = pa_idxset_next(c->modules, &idx)) {
        if (m->auto_unload)
            continue;

        pa_strbuf_printf(buf, "load-module %s", m->name);

        if (m->argument)
            pa_strbuf_printf(buf, " %s", m->argument);

        pa_strbuf_puts(buf, "\n");
    }

    nl = 0;

    for (s = pa_idxset_first(c->sinks, &idx); s; s = pa_idxset_next(c->sinks, &idx)) {
        if (s->owner && s->owner->auto_unload)
            continue;

        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = 1;
        }

        pa_strbuf_printf(buf, "set-sink-volume %s 0x%03x\n", s->name, pa_cvolume_avg(pa_sink_get_volume(s, PA_MIXER_HARDWARE)));
    }


    if (c->autoload_hashmap) {
        nl = 0;
        
        i = NULL;
        while ((a = pa_hashmap_iterate(c->autoload_hashmap, &i, NULL))) {

            if (!nl) {
                pa_strbuf_puts(buf, "\n");
                nl = 1;
            }
            
            pa_strbuf_printf(buf, "add-autoload-%s %s %s", a->type == PA_NAMEREG_SINK ? "sink" : "source", a->name, a->module);
            
            if (a->argument)
                pa_strbuf_printf(buf, " %s", a->argument);
            
            pa_strbuf_puts(buf, "\n");
        }
    }

    nl = 0;
    
    if ((p = pa_namereg_get_default_sink_name(c))) {
        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = 1;
        }
        pa_strbuf_printf(buf, "set-default-sink %s\n", p);
    }

    if ((p = pa_namereg_get_default_source_name(c))) {
        if (!nl) {
            pa_strbuf_puts(buf, "\n");
            nl = 1;
        }
        pa_strbuf_printf(buf, "set-default-source %s\n", p);
    }

    pa_strbuf_puts(buf, "\n### EOF\n");

    return 0;
}


int pa_cli_command_execute_line(pa_core *c, const char *s, pa_strbuf *buf, int *fail) {
    const char *cs;
    
    cs = s+strspn(s, whitespace);

    if (*cs == '#' || !*cs)
        return 0;
    else if (*cs == '.') {
        if (!strcmp(cs, FAIL_META))
            *fail = 1;
        else if (!strcmp(cs, NOFAIL_META))
            *fail = 0;
        else {
            size_t l;
            l = strcspn(cs, whitespace);

            if (l == sizeof(INCLUDE_META)-1 && !strncmp(cs, INCLUDE_META, l)) {
                const char *filename = cs+l+strspn(cs+l, whitespace);

                if (pa_cli_command_execute_file(c, filename, buf, fail) < 0)
                    if (*fail) return -1;
            } else {
                pa_strbuf_printf(buf, "Invalid meta command: %s\n", cs);
                if (*fail) return -1;
            }
        }
    } else {
        const struct command*command;
        int unknown = 1;
        size_t l;
        
        l = strcspn(cs, whitespace);

        for (command = commands; command->name; command++) 
            if (strlen(command->name) == l && !strncmp(cs, command->name, l)) {
                int ret;
                pa_tokenizer *t = pa_tokenizer_new(cs, command->args);
                assert(t);
                ret = command->proc(c, t, buf, fail);
                pa_tokenizer_free(t);
                unknown = 0;

                if (ret < 0 && *fail)
                    return -1;
                
                break;
            }

        if (unknown) {
            pa_strbuf_printf(buf, "Unknown command: %s\n", cs);
            if (*fail)
                return -1;
        }
    }

    return 0;
}

int pa_cli_command_execute_file(pa_core *c, const char *fn, pa_strbuf *buf, int *fail) {
    char line[256];
    FILE *f = NULL;
    int ret = -1;
    assert(c && fn && buf);

    if (!(f = fopen(fn, "r"))) {
        pa_strbuf_printf(buf, "open('%s') failed: %s\n", fn, strerror(errno));
        if (!*fail)
            ret = 0;
        goto fail;
    }

    while (fgets(line, sizeof(line), f)) {
        char *e = line + strcspn(line, linebreak);
        *e = 0;

        if (pa_cli_command_execute_line(c, line, buf, fail) < 0 && *fail)
            goto fail;
    }

    ret = 0;

fail:
    if (f)
        fclose(f);

    return ret;
}

int pa_cli_command_execute(pa_core *c, const char *s, pa_strbuf *buf, int *fail) {
    const char *p;
    assert(c && s && buf && fail);

    p = s;
    while (*p) {
        size_t l = strcspn(p, linebreak);
        char *line = pa_xstrndup(p, l);
        
        if (pa_cli_command_execute_line(c, line, buf, fail) < 0&& *fail) {
            pa_xfree(line);
            return -1;
        }
        pa_xfree(line);

        p += l;
        p += strspn(p, linebreak);
    }

    return 0;
}