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#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include "ioline.h"
#include "cli.h"
#include "module.h"
#include "sink.h"
#include "source.h"
#include "client.h"
#include "sinkinput.h"
#include "sourceoutput.h"
#include "tokenizer.h"
#include "strbuf.h"
struct cli {
struct core *core;
struct ioline *line;
void (*eof_callback)(struct cli *c, void *userdata);
void *userdata;
};
struct command {
const char *name;
void (*proc) (struct cli *cli, struct tokenizer*t);
const char *help;
unsigned args;
};
static void line_callback(struct ioline *line, const char *s, void *userdata);
static void cli_command_exit(struct cli *c, struct tokenizer *t);
static void cli_command_help(struct cli *c, struct tokenizer *t);
static void cli_command_modules(struct cli *c, struct tokenizer *t);
static void cli_command_clients(struct cli *c, struct tokenizer *t);
static void cli_command_sinks(struct cli *c, struct tokenizer *t);
static void cli_command_sources(struct cli *c, struct tokenizer *t);
static void cli_command_sink_inputs(struct cli *c, struct tokenizer *t);
static void cli_command_source_outputs(struct cli *c, struct tokenizer *t);
static void cli_command_stat(struct cli *c, struct tokenizer *t);
static void cli_command_info(struct cli *c, struct tokenizer *t);
static void cli_command_load(struct cli *c, struct tokenizer *t);
static void cli_command_unload(struct cli *c, struct tokenizer *t);
static const struct command commands[] = {
{ "exit", cli_command_exit, "Terminate the daemon", 1 },
{ "help", cli_command_help, "Show this help", 1 },
{ "modules", cli_command_modules, "List loaded modules", 1 },
{ "sinks", cli_command_sinks, "List loaded sinks", 1 },
{ "sources", cli_command_sources, "List loaded sources", 1 },
{ "clients", cli_command_clients, "List loaded clients", 1 },
{ "sink_inputs", cli_command_sink_inputs, "List sink inputs", 1 },
{ "source_outputs", cli_command_source_outputs, "List source outputs", 1 },
{ "stat", cli_command_stat, "Show memory block statistics", 1 },
{ "info", cli_command_info, "Show comprehensive status", 1 },
{ "load", cli_command_load, "Load a module (given by name and arguments)", 3 },
{ "unload", cli_command_unload, "Unload a module (specified by index)", 2 },
{ NULL, NULL, NULL, 0 }
};
static const char prompt[] = ">>> ";
struct cli* cli_new(struct core *core, struct iochannel *io) {
struct cli *c;
assert(io);
c = malloc(sizeof(struct cli));
assert(c);
c->core = core;
c->line = ioline_new(io);
assert(c->line);
c->userdata = NULL;
c->eof_callback = NULL;
ioline_set_callback(c->line, line_callback, c);
ioline_puts(c->line, "Welcome to polypaudio! Use \"help\" for usage information.\n");
ioline_puts(c->line, prompt);
return c;
}
void cli_free(struct cli *c) {
assert(c);
ioline_free(c->line);
free(c);
}
static void line_callback(struct ioline *line, const char *s, void *userdata) {
struct cli *c = userdata;
const char *cs;
const char delimiter[] = " \t\n\r";
assert(line && c);
if (!s) {
fprintf(stderr, "CLI client exited\n");
if (c->eof_callback)
c->eof_callback(c, c->userdata);
return;
}
cs = s+strspn(s, delimiter);
if (*cs && *cs != '#') {
const struct command*command;
int unknown = 1;
size_t l;
l = strcspn(s, delimiter);
for (command = commands; command->name; command++)
if (strlen(command->name) == l && !strncmp(s, command->name, l)) {
struct tokenizer *t = tokenizer_new(s, command->args);
assert(t);
command->proc(c, t);
tokenizer_free(t);
unknown = 0;
break;
}
if (unknown)
ioline_puts(line, "Unknown command\n");
}
ioline_puts(c->line, prompt);
}
void cli_set_eof_callback(struct cli *c, void (*cb)(struct cli*c, void *userdata), void *userdata) {
assert(c && cb);
c->eof_callback = cb;
c->userdata = userdata;
}
static void cli_command_exit(struct cli *c, struct tokenizer *t) {
assert(c && c->core && c->core->mainloop && t);
mainloop_quit(c->core->mainloop, -1);
}
static void cli_command_help(struct cli *c, struct tokenizer *t) {
const struct command*command;
struct strbuf *strbuf;
char *p;
assert(c && t);
strbuf = strbuf_new();
assert(strbuf);
strbuf_puts(strbuf, "Available commands:\n");
for (command = commands; command->name; command++)
strbuf_printf(strbuf, " %-20s %s\n", command->name, command->help);
ioline_puts(c->line, p = strbuf_tostring_free(strbuf));
free(p);
}
static void cli_command_modules(struct cli *c, struct tokenizer *t) {
char *s;
assert(c && t);
s = module_list_to_string(c->core);
assert(s);
ioline_puts(c->line, s);
free(s);
}
static void cli_command_clients(struct cli *c, struct tokenizer *t) {
char *s;
assert(c && t);
s = client_list_to_string(c->core);
assert(s);
ioline_puts(c->line, s);
free(s);
}
static void cli_command_sinks(struct cli *c, struct tokenizer *t) {
char *s;
assert(c && t);
s = sink_list_to_string(c->core);
assert(s);
ioline_puts(c->line, s);
free(s);
}
static void cli_command_sources(struct cli *c, struct tokenizer *t) {
char *s;
assert(c && t);
s = source_list_to_string(c->core);
assert(s);
ioline_puts(c->line, s);
free(s);
}
static void cli_command_sink_inputs(struct cli *c, struct tokenizer *t) {
char *s;
assert(c && t);
s = sink_input_list_to_string(c->core);
assert(s);
ioline_puts(c->line, s);
free(s);
}
static void cli_command_source_outputs(struct cli *c, struct tokenizer *t) {
char *s;
assert(c && t);
s = source_output_list_to_string(c->core);
assert(s);
ioline_puts(c->line, s);
free(s);
}
static void cli_command_stat(struct cli *c, struct tokenizer *t) {
char txt[256];
assert(c && t);
snprintf(txt, sizeof(txt), "Memory blocks allocated: %u, total size: %u bytes.\n", memblock_count, memblock_total);
ioline_puts(c->line, txt);
}
static void cli_command_info(struct cli *c, struct tokenizer *t) {
assert(c && t);
cli_command_stat(c, t);
cli_command_modules(c, t);
cli_command_sources(c, t);
cli_command_sinks(c, t);
cli_command_clients(c, t);
cli_command_sink_inputs(c, t);
cli_command_source_outputs(c, t);
}
static void cli_command_load(struct cli *c, struct tokenizer *t) {
struct module *m;
const char *name;
char txt[256];
assert(c && t);
if (!(name = tokenizer_get(t, 1))) {
ioline_puts(c->line, "You need to specfiy the module name and optionally arguments.\n");
return;
}
if (!(m = module_load(c->core, name, tokenizer_get(t, 2)))) {
ioline_puts(c->line, "Module load failed.\n");
return;
}
snprintf(txt, sizeof(txt), "Module successfully loaded, index: %u.\n", m->index);
ioline_puts(c->line, txt);
}
static void cli_command_unload(struct cli *c, struct tokenizer *t) {
struct module *m;
uint32_t index;
const char *i;
char *e;
assert(c && t);
if (!(i = tokenizer_get(t, 1))) {
ioline_puts(c->line, "You need to specfiy the module index.\n");
return;
}
index = (uint32_t) strtoul(i, &e, 10);
if (*e || !(m = idxset_get_by_index(c->core->modules, index))) {
ioline_puts(c->line, "Invalid module index.\n");
return;
}
module_unload_request(c->core, m);
}
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