/*
* nncmpp -- the MPD client you never knew you needed
*
* Copyright (c) 2016 - 2018, Přemysl Janouch <p@janouch.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "config.h"
// We "need" to have an enum for attributes before including liberty.
// Avoiding colours in the defaults here in order to support dumb terminals.
#define ATTRIBUTE_TABLE(XX) \
XX( NORMAL, "normal", -1, -1, 0 ) \
XX( HIGHLIGHT, "highlight", -1, -1, A_BOLD ) \
/* Gauge */ \
XX( ELAPSED, "elapsed", -1, -1, A_REVERSE ) \
XX( REMAINS, "remains", -1, -1, A_UNDERLINE ) \
/* Tab bar */ \
XX( TAB_BAR, "tab_bar", -1, -1, A_REVERSE ) \
XX( TAB_ACTIVE, "tab_active", -1, -1, A_UNDERLINE ) \
/* Listview */ \
XX( HEADER, "header", -1, -1, A_UNDERLINE ) \
XX( EVEN, "even", -1, -1, 0 ) \
XX( ODD, "odd", -1, -1, 0 ) \
XX( DIRECTORY, "directory", -1, -1, 0 ) \
XX( SELECTION, "selection", -1, -1, A_REVERSE ) \
/* Cyan is good with both black and white.
* Can't use A_REVERSE because bold'd be bright.
* Unfortunately ran out of B&W attributes. */ \
XX( MULTISELECT, "multiselect",-1, 6, 0 ) \
XX( SCROLLBAR, "scrollbar", -1, -1, 0 ) \
/* These are for debugging only */ \
XX( WARNING, "warning", 3, -1, 0 ) \
XX( ERROR, "error", 1, -1, 0 ) \
XX( INCOMING, "incoming", 2, -1, 0 ) \
XX( OUTGOING, "outgoing", 4, -1, 0 )
enum
{
#define XX(name, config, fg_, bg_, attrs_) ATTRIBUTE_ ## name,
ATTRIBUTE_TABLE (XX)
#undef XX
ATTRIBUTE_COUNT
};
// My battle-tested C framework acting as a GLib replacement. Its one big
// disadvantage is missing support for i18n but that can eventually be added
// as an optional feature. Localised applications look super awkward, though.
// User data for logger functions to enable formatted logging
#define print_fatal_data ((void *) ATTRIBUTE_ERROR)
#define print_error_data ((void *) ATTRIBUTE_ERROR)
#define print_warning_data ((void *) ATTRIBUTE_WARNING)
#define LIBERTY_WANT_POLLER
#define LIBERTY_WANT_ASYNC
#define LIBERTY_WANT_PROTO_HTTP
#define LIBERTY_WANT_PROTO_MPD
#include "liberty/liberty.c"
#include "liberty/liberty-tui.c"
#define HAVE_LIBERTY
#include "line-editor.c"
#include <math.h>
#include <locale.h>
#include <termios.h>
#ifndef TIOCGWINSZ
#include <sys/ioctl.h>
#endif // ! TIOCGWINSZ
// ncurses is notoriously retarded for input handling, we need something
// different if only to receive mouse events reliably.
#include "termo.h"
// We need cURL to extract links from Internet stream playlists. It'd be way
// too much code to do this all by ourselves, and there's nothing better around.
#include <curl/curl.h>
#define APP_TITLE PROGRAM_NAME ///< Left top corner
// --- Utilities ---------------------------------------------------------------
// The standard endwin/refresh sequence makes the terminal flicker
static void
update_curses_terminal_size (void)
{
#if defined (HAVE_RESIZETERM) && defined (TIOCGWINSZ)
struct winsize size;
if (!ioctl (STDOUT_FILENO, TIOCGWINSZ, (char *) &size))
{
char *row = getenv ("LINES");
char *col = getenv ("COLUMNS");
unsigned long tmp;
resizeterm (
(row && xstrtoul (&tmp, row, 10)) ? tmp : size.ws_row,
(col && xstrtoul (&tmp, col, 10)) ? tmp : size.ws_col);
}
#else // HAVE_RESIZETERM && TIOCGWINSZ
endwin ();
refresh ();
#endif // HAVE_RESIZETERM && TIOCGWINSZ
}
static int64_t
clock_msec (clockid_t clock)
{
struct timespec tp;
hard_assert (clock_gettime (clock, &tp) != -1);
return (int64_t) tp.tv_sec * 1000 + (int64_t) tp.tv_nsec / 1000000;
}
static bool
xstrtoul_map (const struct str_map *map, const char *key, unsigned long *out)
{
const char *field = str_map_find (map, key);
return field && xstrtoul (out, field, 10);
}
static const char *
xbasename (const char *path)
{
const char *last_slash = strrchr (path, '/');
return last_slash ? last_slash + 1 : path;
}
static char *
latin1_to_utf8 (const char *latin1)
{
struct str converted = str_make ();
while (*latin1)
{
uint8_t c = *latin1++;
if (c < 0x80)
str_append_c (&converted, c);
else
{
str_append_c (&converted, 0xC0 | (c >> 6));
str_append_c (&converted, 0x80 | (c & 0x3F));
}
}
return str_steal (&converted);
}
static void
cstr_uncapitalize (char *s)
{
if (isupper (s[0]) && islower (s[1]))
s[0] = tolower_ascii (s[0]);
}
static int
print_curl_debug (CURL *easy, curl_infotype type, char *data, size_t len,
void *ud)
{
(void) easy;
(void) ud;
(void) type;
char copy[len + 1];
for (size_t i = 0; i < len; i++)
{
uint8_t c = data[i];
copy[i] = c >= 32 || c == '\n' ? c : '.';
}
copy[len] = '\0';
char *next;
for (char *p = copy; p; p = next)
{
if ((next = strchr (p, '\n')))
*next++ = '\0';
if (!*p)
continue;
if (!utf8_validate (p, strlen (p)))
{
char *fixed = latin1_to_utf8 (p);
print_debug ("cURL: %s", fixed);
free (fixed);
}
else
print_debug ("cURL: %s", p);
}
return 0;
}
static char *
mpd_parse_kv (char *line, char **value)
{
char *key = mpd_client_parse_kv (line, value);
if (!key) print_debug ("%s: %s", "erroneous MPD output", line);
return key;
}
// --- cURL async wrapper ------------------------------------------------------
// You are meant to subclass this structure, no user_data pointers needed
struct poller_curl_task;
/// Receives notification for finished transfers
typedef void (*poller_curl_done_fn)
(CURLMsg *msg, struct poller_curl_task *task);
struct poller_curl_task
{
CURL *easy; ///< cURL easy interface handle
char curl_error[CURL_ERROR_SIZE]; ///< cURL error info buffer
poller_curl_done_fn on_done; ///< Done callback
};
struct poller_curl_fd
{
LIST_HEADER (struct poller_curl_fd)
struct poller_fd fd; ///< Poller FD
};
struct poller_curl
{
struct poller *poller; ///< Parent poller
struct poller_timer timer; ///< cURL timer
CURLM *multi; ///< cURL multi interface handle
struct poller_curl_fd *fds; ///< List of all FDs
};
static void
poller_curl_collect (struct poller_curl *self, curl_socket_t s, int ev_bitmask)
{
int running = 0;
CURLMcode res;
// XXX: ignoring errors, in particular CURLM_CALL_MULTI_PERFORM
if ((res = curl_multi_socket_action (self->multi, s, ev_bitmask, &running)))
print_debug ("cURL: %s", curl_multi_strerror (res));
CURLMsg *msg;
while ((msg = curl_multi_info_read (self->multi, &running)))
if (msg->msg == CURLMSG_DONE)
{
struct poller_curl_task *task = NULL;
hard_assert (!curl_easy_getinfo
(msg->easy_handle, CURLINFO_PRIVATE, &task));
task->on_done (msg, task);
}
}
static void
poller_curl_on_socket (const struct pollfd *pfd, void *user_data)
{
int mask = 0;
if (pfd->revents & POLLIN) mask |= CURL_CSELECT_IN;
if (pfd->revents & POLLOUT) mask |= CURL_CSELECT_OUT;
if (pfd->revents & POLLERR) mask |= CURL_CSELECT_ERR;
poller_curl_collect (user_data, pfd->fd, mask);
}
static int
poller_curl_on_socket_action (CURL *easy, curl_socket_t s, int what,
void *user_data, void *socket_data)
{
(void) easy;
struct poller_curl *self = user_data;
struct poller_curl_fd *fd;
if (!(fd = socket_data))
{
fd = xmalloc (sizeof *fd);
LIST_PREPEND (self->fds, fd);
fd->fd = poller_fd_make (self->poller, s);
fd->fd.dispatcher = poller_curl_on_socket;
fd->fd.user_data = self;
curl_multi_assign (self->multi, s, fd);
}
if (what == CURL_POLL_REMOVE)
{
poller_fd_reset (&fd->fd);
LIST_UNLINK (self->fds, fd);
free (fd);
}
else
{
short events = 0;
if (what == CURL_POLL_IN) events = POLLIN;
if (what == CURL_POLL_OUT) events = POLLOUT;
if (what == CURL_POLL_INOUT) events = POLLIN | POLLOUT;
poller_fd_set (&fd->fd, events);
}
return 0;
}
static void
poller_curl_on_timer (void *user_data)
{
poller_curl_collect (user_data, CURL_SOCKET_TIMEOUT, 0);
}
static int
poller_curl_on_timer_change (CURLM *multi, long timeout_ms, void *user_data)
{
(void) multi;
struct poller_curl *self = user_data;
if (timeout_ms < 0)
poller_timer_reset (&self->timer);
else
poller_timer_set (&self->timer, timeout_ms);
return 0;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static bool
poller_curl_init (struct poller_curl *self, struct poller *poller,
struct error **e)
{
memset (self, 0, sizeof *self);
if (!(self->multi = curl_multi_init ()))
return error_set (e, "cURL setup failed");
CURLMcode mres;
if ((mres = curl_multi_setopt (self->multi,
CURLMOPT_SOCKETFUNCTION, poller_curl_on_socket_action))
|| (mres = curl_multi_setopt (self->multi,
CURLMOPT_TIMERFUNCTION, poller_curl_on_timer_change))
|| (mres = curl_multi_setopt (self->multi, CURLMOPT_SOCKETDATA, self))
|| (mres = curl_multi_setopt (self->multi, CURLMOPT_TIMERDATA, self)))
{
curl_multi_cleanup (self->multi);
return error_set (e, "%s: %s",
"cURL setup failed", curl_multi_strerror (mres));
}
self->timer = poller_timer_make ((self->poller = poller));
self->timer.dispatcher = poller_curl_on_timer;
self->timer.user_data = self;
return true;
}
static void
poller_curl_free (struct poller_curl *self)
{
curl_multi_cleanup (self->multi);
poller_timer_reset (&self->timer);
LIST_FOR_EACH (struct poller_curl_fd, iter, self->fds)
{
poller_fd_reset (&iter->fd);
free (iter);
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/// Initialize a task with a new easy instance that can be used with the poller
static bool
poller_curl_spawn (struct poller_curl_task *task, struct error **e)
{
CURL *easy;
if (!(easy = curl_easy_init ()))
return error_set (e, "cURL setup failed");
// We already take care of SIGPIPE, and native DNS timeouts are only
// a problem for people without the AsynchDNS feature.
//
// Unfortunately, cURL doesn't allow custom callbacks for DNS.
// The most we could try is parse out the hostname and provide an address
// override for it using CURLOPT_RESOLVE. Or be our own SOCKS4A/5 proxy.
CURLcode res;
if ((res = curl_easy_setopt (easy, CURLOPT_NOSIGNAL, 1L))
|| (res = curl_easy_setopt (easy, CURLOPT_ERRORBUFFER, task->curl_error))
|| (res = curl_easy_setopt (easy, CURLOPT_PRIVATE, task)))
{
curl_easy_cleanup (easy);
return error_set (e, "%s", curl_easy_strerror (res));
}
task->easy = easy;
return true;
}
static bool
poller_curl_add (struct poller_curl *self, CURL *easy, struct error **e)
{
CURLMcode mres;
// "CURLMOPT_TIMERFUNCTION [...] will be called from within this function"
if ((mres = curl_multi_add_handle (self->multi, easy)))
return error_set (e, "%s", curl_multi_strerror (mres));
return true;
}
static bool
poller_curl_remove (struct poller_curl *self, CURL *easy, struct error **e)
{
CURLMcode mres;
if ((mres = curl_multi_remove_handle (self->multi, easy)))
return error_set (e, "%s", curl_multi_strerror (mres));
return true;
}
// --- Compact map -------------------------------------------------------------
// MPD provides us with a hefty amount of little key-value maps. The overhead
// of str_map for such constant (string -> string) maps is too high and it's
// much better to serialize them (mainly cache locality and memory efficiency).
//
// This isn't intended to be reusable and has case insensitivity built-in.
typedef uint8_t *compact_map_t; ///< Compacted (string -> string) map
static compact_map_t
compact_map (struct str_map *map)
{
struct str s = str_make ();
struct str_map_iter iter = str_map_iter_make (map);
char *value;
static const size_t zero = 0, alignment = sizeof zero;
while ((value = str_map_iter_next (&iter)))
{
size_t entry_len = iter.link->key_length + 1 + strlen (value) + 1;
size_t padding_len = (alignment - entry_len % alignment) % alignment;
entry_len += padding_len;
str_append_data (&s, &entry_len, sizeof entry_len);
str_append_printf (&s, "%s%c%s%c", iter.link->key, 0, value, 0);
str_append_data (&s, &zero, padding_len);
}
str_append_data (&s, &zero, sizeof zero);
return (compact_map_t) str_steal (&s);
}
static char *
compact_map_find (compact_map_t data, const char *needle)
{
size_t entry_len;
while ((entry_len = *(size_t *) data))
{
data += sizeof entry_len;
if (!strcasecmp_ascii (needle, (const char *) data))
return (char *) data + strlen (needle) + 1;
data += entry_len;
}
return NULL;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
struct item_list
{
compact_map_t *items; ///< Compacted (string -> string) maps
size_t len; ///< Length
size_t alloc; ///< Allocated items
};
static struct item_list
item_list_make (void)
{
struct item_list self = {};
self.items = xcalloc (sizeof *self.items, (self.alloc = 16));
return self;
}
static void
item_list_free (struct item_list *self)
{
for (size_t i = 0; i < self->len; i++)
free (self->items[i]);
free (self->items);
}
static bool
item_list_set (struct item_list *self, int i, struct str_map *item)
{
if (i < 0 || (size_t) i >= self->len)
return false;
free (self->items[i]);
self->items[i] = compact_map (item);
return true;
}
static compact_map_t
item_list_get (struct item_list *self, int i)
{
if (i < 0 || (size_t) i >= self->len || !self->items[i])
return NULL;
return self->items[i];
}
static void
item_list_resize (struct item_list *self, size_t len)
{
// Make the allocated array big enough but not too large
size_t new_alloc = self->alloc;
while (new_alloc < len)
new_alloc <<= 1;
while ((new_alloc >> 1) >= len
&& (new_alloc - len) >= 1024)
new_alloc >>= 1;
for (size_t i = len; i < self->len; i++)
free (self->items[i]);
if (new_alloc != self->alloc)
self->items = xreallocarray (self->items,
sizeof *self->items, (self->alloc = new_alloc));
for (size_t i = self->len; i < len; i++)
self->items[i] = NULL;
self->len = len;
}
// --- Application -------------------------------------------------------------
// Function names are prefixed mostly because of curses which clutters the
// global namespace and makes it harder to distinguish what functions relate to.
// The user interface is focused on conceptual simplicity. That is important
// since we're not using any TUI framework (which are mostly a lost cause to me
// in the post-Unicode era and not worth pursuing), and the code would get
// bloated and incomprehensible fast. We mostly rely on "row_buffer" to write
// text from left to right row after row while keeping track of cells.
//
// There is an independent top pane displaying general status information,
// followed by a tab bar and a listview served by a per-tab event handler.
//
// For simplicity, the listview can only work with items that are one row high.
struct tab;
enum action;
/// Try to handle an action in the tab
typedef bool (*tab_action_fn) (enum action action);
/// Draw an item to the screen using the row buffer API
typedef void (*tab_item_draw_fn)
(size_t item_index, struct row_buffer *buffer, int width);
struct tab
{
LIST_HEADER (struct tab)
char *name; ///< Visible identifier
size_t name_width; ///< Visible width of the name
char *header; ///< The header, should there be any
// Implementation:
tab_action_fn on_action; ///< User action handler callback
tab_item_draw_fn on_item_draw; ///< Item draw callback
// Provided by tab owner:
bool can_multiselect; ///< Multiple items can be selected
size_t item_count; ///< Total item count
// Managed by the common handler:
int item_top; ///< Index of the topmost item
int item_selected; ///< Index of the selected item
int item_mark; ///< Multiselect second point index
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
enum player_state { PLAYER_STOPPED, PLAYER_PLAYING, PLAYER_PAUSED };
// Basically a container for most of the globals; no big sense in handing
// around a pointer to this, hence it is a simple global variable as well.
// There is enough global state as it is.
static struct app_context
{
// Event loop:
struct poller poller; ///< Poller
bool quitting; ///< Quit signal for the event loop
bool polling; ///< The event loop is running
struct poller_fd tty_event; ///< Terminal input event
struct poller_fd signal_event; ///< Signal FD event
struct poller_timer message_timer; ///< Message timeout
char *message; ///< Message to show in the statusbar
// Connection:
struct mpd_client client; ///< MPD client interface
struct poller_timer connect_event; ///< MPD reconnect timer
enum player_state state; ///< Player state
struct str_map playback_info; ///< Current song info
struct poller_timer elapsed_event; ///< Seconds elapsed event
int64_t elapsed_since; ///< Time of the next tick
// TODO: initialize these to -1
int song; ///< Current song index
int song_elapsed; ///< Song elapsed in seconds
int song_duration; ///< Song duration in seconds
int volume; ///< Current volume
struct item_list playlist; ///< Current playlist
uint32_t playlist_version; ///< Playlist version
int playlist_time; ///< Play time in seconds
// Data:
struct config config; ///< Program configuration
struct strv streams; ///< List of "name NUL URI NUL"
struct tab *help_tab; ///< Special help tab
struct tab *tabs; ///< All other tabs
struct tab *active_tab; ///< Active tab
struct tab *last_tab; ///< Previous tab
// Emulated widgets:
int header_height; ///< Height of the header
int tabs_offset; ///< Offset to tabs or -1
int controls_offset; ///< Offset to player controls or -1
int gauge_offset; ///< Offset to the gauge or -1
int gauge_width; ///< Width of the gauge, if present
struct line_editor editor; ///< Line editor
struct poller_idle refresh_event; ///< Refresh the screen
// Terminal:
termo_t *tk; ///< termo handle
struct poller_timer tk_timer; ///< termo timeout timer
bool locale_is_utf8; ///< The locale is Unicode
bool use_partial_boxes; ///< Use Unicode box drawing chars
struct attrs attrs[ATTRIBUTE_COUNT];
}
g;
/// Shortcut to retrieve named terminal attributes
#define APP_ATTR(name) g.attrs[ATTRIBUTE_ ## name].attrs
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
tab_init (struct tab *self, const char *name)
{
memset (self, 0, sizeof *self);
// Add some padding for decorative purposes
self->name = xstrdup_printf (" %s ", name);
// Assuming tab names are pure ASCII, otherwise this would be inaccurate
// and we'd need to filter it first to replace invalid chars with '?'
self->name_width = u8_strwidth ((uint8_t *) self->name, locale_charset ());
self->item_selected = 0;
self->item_mark = -1;
}
static void
tab_free (struct tab *self)
{
free (self->name);
}
static struct tab_range { int from, upto; }
tab_selection_range (struct tab *self)
{
if (self->item_selected < 0 || !self->item_count)
return (struct tab_range) { -1, -1 };
if (self->item_mark < 0)
return (struct tab_range) { self->item_selected, self->item_selected };
return (struct tab_range) { MIN (self->item_selected, self->item_mark),
MAX (self->item_selected, self->item_mark) };
}
// --- Configuration -----------------------------------------------------------
static struct config_schema g_config_settings[] =
{
{ .name = "address",
.comment = "Address to connect to the MPD server",
.type = CONFIG_ITEM_STRING,
.default_ = "\"localhost\"" },
{ .name = "password",
.comment = "Password to use for MPD authentication",
.type = CONFIG_ITEM_STRING },
{ .name = "root",
.comment = "Where all the files MPD is playing are located",
.type = CONFIG_ITEM_STRING },
{}
};
static struct config_schema g_config_colors[] =
{
#define XX(name_, config, fg_, bg_, attrs_) \
{ .name = config, .type = CONFIG_ITEM_STRING },
ATTRIBUTE_TABLE (XX)
#undef XX
{}
};
static const char *
get_config_string (struct config_item *root, const char *key)
{
struct config_item *item = config_item_get (root, key, NULL);
hard_assert (item);
if (item->type == CONFIG_ITEM_NULL)
return NULL;
hard_assert (config_item_type_is_string (item->type));
return item->value.string.str;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
load_config_settings (struct config_item *subtree, void *user_data)
{
config_schema_apply_to_object (g_config_settings, subtree, user_data);
}
static void
load_config_colors (struct config_item *subtree, void *user_data)
{
config_schema_apply_to_object (g_config_colors, subtree, user_data);
// The attributes cannot be changed dynamically right now, so it doesn't
// make much sense to make use of "on_change" callbacks either.
// For simplicity, we should reload the entire table on each change anyway.
const char *value;
#define XX(name, config, fg_, bg_, attrs_) \
if ((value = get_config_string (subtree, config))) \
g.attrs[ATTRIBUTE_ ## name] = attrs_decode (value);
ATTRIBUTE_TABLE (XX)
#undef XX
}
static int
app_casecmp (const uint8_t *a, const uint8_t *b)
{
int res;
// XXX: this seems to produce some strange results
if (u8_casecmp (a, strlen ((const char *) a), b, strlen ((const char *) b),
NULL, NULL, &res))
res = u8_strcmp (a, b);
return res;
}
static int
strv_sort_utf8_cb (const void *a, const void *b)
{
return app_casecmp (*(const uint8_t **) a, *(const uint8_t **) b);
}
static void
load_config_streams (struct config_item *subtree, void *user_data)
{
(void) user_data;
// XXX: we can't use the tab in load_config_streams() because it hasn't
// been initialized yet, and we cannot initialize it before the
// configuration has been loaded. Thus we load it into the app_context.
struct str_map_iter iter = str_map_iter_make (&subtree->value.object);
struct config_item *item;
while ((item = str_map_iter_next (&iter)))
if (!config_item_type_is_string (item->type))
print_warning ("`%s': stream URIs must be strings", iter.link->key);
else
{
strv_append_owned (&g.streams, xstrdup_printf ("%s%c%s",
iter.link->key, 0, item->value.string.str));
}
qsort (g.streams.vector, g.streams.len,
sizeof *g.streams.vector, strv_sort_utf8_cb);
}
static void
app_load_configuration (void)
{
struct config *config = &g.config;
config_register_module (config, "settings", load_config_settings, NULL);
config_register_module (config, "colors", load_config_colors, NULL);
config_register_module (config, "streams", load_config_streams, NULL);
// Bootstrap configuration, so that we can access schema items at all
config_load (config, config_item_object ());
char *filename = resolve_filename
(PROGRAM_NAME ".conf", resolve_relative_config_filename);
if (!filename)
return;
struct error *e = NULL;
struct config_item *root = config_read_from_file (filename, &e);
free (filename);
if (e)
{
print_error ("error loading configuration: %s", e->message);
error_free (e);
exit (EXIT_FAILURE);
}
if (root)
{
config_load (&g.config, root);
config_schema_call_changed (g.config.root);
}
}
// --- Application -------------------------------------------------------------
static void
app_init_attributes (void)
{
#define XX(name, config, fg_, bg_, attrs_) \
g.attrs[ATTRIBUTE_ ## name].fg = fg_; \
g.attrs[ATTRIBUTE_ ## name].bg = bg_; \
g.attrs[ATTRIBUTE_ ## name].attrs = attrs_;
ATTRIBUTE_TABLE (XX)
#undef XX
}
static void
app_init_context (void)
{
poller_init (&g.poller);
g.client = mpd_client_make (&g.poller);
g.config = config_make ();
g.streams = strv_make ();
g.playlist = item_list_make ();
g.playback_info = str_map_make (free);
g.playback_info.key_xfrm = tolower_ascii_strxfrm;
// This is also approximately what libunistring does internally,
// since the locale name is canonicalized by locale_charset().
// Note that non-Unicode locales are handled pretty inefficiently.
g.locale_is_utf8 = !strcasecmp_ascii (locale_charset (), "UTF-8");
// It doesn't work 100% (e.g. incompatible with undelining in urxvt)
// TODO: make this configurable
g.use_partial_boxes = g.locale_is_utf8;
app_init_attributes ();
}
static void
app_init_terminal (void)
{
TERMO_CHECK_VERSION;
if (!(g.tk = termo_new (STDIN_FILENO, NULL, 0)))
abort ();
if (!initscr () || nonl () == ERR)
abort ();
// By default we don't use any colors so they're not required...
if (start_color () == ERR
|| use_default_colors () == ERR
|| COLOR_PAIRS <= ATTRIBUTE_COUNT)
return;
for (int a = 0; a < ATTRIBUTE_COUNT; a++)
{
// ...thus we can reset back to defaults even after initializing some
if (g.attrs[a].fg >= COLORS || g.attrs[a].fg < -1
|| g.attrs[a].bg >= COLORS || g.attrs[a].bg < -1)
{
app_init_attributes ();
return;
}
init_pair (a + 1, g.attrs[a].fg, g.attrs[a].bg);
g.attrs[a].attrs |= COLOR_PAIR (a + 1);
}
}
static void
app_free_context (void)
{
mpd_client_free (&g.client);
str_map_free (&g.playback_info);
strv_free (&g.streams);
item_list_free (&g.playlist);
line_editor_free (&g.editor);
config_free (&g.config);
poller_free (&g.poller);
free (g.message);
if (g.tk)
termo_destroy (g.tk);
}
static void
app_quit (void)
{
g.quitting = true;
// So far there's nothing for us to wait on, so let's just stop looping;
// otherwise we might want to e.g. cleanly bring down the MPD interface
g.polling = false;
}
static bool
app_is_character_in_locale (ucs4_t ch)
{
// Avoid the overhead joined with calling iconv() for all characters.
if (g.locale_is_utf8)
return true;
// The library really creates a new conversion object every single time
// and doesn't provide any smarter APIs. Luckily, most users use UTF-8.
size_t len;
char *tmp = u32_conv_to_encoding (locale_charset (), iconveh_error,
&ch, 1, NULL, NULL, &len);
if (!tmp)
return false;
free (tmp);
return true;
}
// --- Rendering ---------------------------------------------------------------
static void
app_invalidate (void)
{
poller_idle_set (&g.refresh_event);
}
static void
app_flush_buffer (struct row_buffer *buf, int width, chtype attrs)
{
row_buffer_align (buf, width, attrs);
row_buffer_flush (buf);
row_buffer_free (buf);
}
/// Write the given UTF-8 string padded with spaces.
/// @param[in] attrs Text attributes for the text, including padding.
static void
app_write_line (const char *str, chtype attrs)
{
struct row_buffer buf = row_buffer_make ();
row_buffer_append (&buf, str, attrs);
app_flush_buffer (&buf, COLS, attrs);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
app_flush_header (struct row_buffer *buf, chtype attrs)
{
move (g.header_height++, 0);
app_flush_buffer (buf, COLS, attrs);
}
static void
app_draw_song_info (void)
{
compact_map_t map;
if (!(map = item_list_get (&g.playlist, g.song)))
return;
chtype attr_normal = APP_ATTR (NORMAL);
chtype attr_highlight = APP_ATTR (HIGHLIGHT);
char *title;
if ((title = compact_map_find (map, "title"))
|| (title = compact_map_find (map, "name"))
|| (title = compact_map_find (map, "file")))
{
struct row_buffer buf = row_buffer_make ();
row_buffer_append (&buf, title, attr_highlight);
app_flush_header (&buf, attr_normal);
}
char *artist = compact_map_find (map, "artist");
char *album = compact_map_find (map, "album");
if (!artist && !album)
return;
struct row_buffer buf = row_buffer_make ();
if (artist)
row_buffer_append_args (&buf, " by " + !buf.total_width, attr_normal,
artist, attr_highlight, NULL);
if (album)
row_buffer_append_args (&buf, " from " + !buf.total_width, attr_normal,
album, attr_highlight, NULL);
app_flush_header (&buf, attr_normal);
}
static char *
app_time_string (int seconds)
{
int minutes = seconds / 60; seconds %= 60;
int hours = minutes / 60; minutes %= 60;
struct str s = str_make ();
if (hours)
str_append_printf (&s, "%d:%02d:", hours, minutes);
else
str_append_printf (&s, "%d:", minutes);
str_append_printf (&s, "%02d", seconds);
return str_steal (&s);
}
static void
app_write_time (struct row_buffer *buf, int seconds, chtype attrs)
{
char *s = app_time_string (seconds);
row_buffer_append (buf, s, attrs);
free (s);
}
static void
app_write_gauge (struct row_buffer *buf, float ratio, int width)
{
if (ratio < 0) ratio = 0;
if (ratio > 1) ratio = 1;
// Always compute it in exactly eight times the resolution,
// because sometimes Unicode is even useful
int len_left = ratio * width * 8 + 0.5;
static const char *partials[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉" };
int remainder = len_left % 8;
len_left /= 8;
const char *partial = NULL;
if (g.use_partial_boxes)
partial = partials[remainder];
else
len_left += remainder >= (int) 4;
int len_right = width - len_left;
row_buffer_space (buf, len_left, APP_ATTR (ELAPSED));
if (partial && len_right-- > 0)
row_buffer_append (buf, partial, APP_ATTR (REMAINS));
row_buffer_space (buf, len_right, APP_ATTR (REMAINS));
}
static void
app_draw_status (void)
{
if (g.state != PLAYER_STOPPED)
app_draw_song_info ();
chtype attr_normal = APP_ATTR (NORMAL);
chtype attr_highlight = APP_ATTR (HIGHLIGHT);
struct row_buffer buf = row_buffer_make ();
bool stopped = g.state == PLAYER_STOPPED;
chtype attr_song_action = stopped ? attr_normal : attr_highlight;
const char *toggle = g.state == PLAYER_PLAYING ? "||" : "|>";
row_buffer_append_args (&buf,
"<<", attr_song_action, " ", attr_normal,
toggle, attr_highlight, " ", attr_normal,
"[]", attr_song_action, " ", attr_normal,
">>", attr_song_action, " ", attr_normal,
NULL);
if (stopped)
row_buffer_append (&buf, "Stopped", attr_normal);
else
{
if (g.song_elapsed >= 0)
{
app_write_time (&buf, g.song_elapsed, attr_normal);
row_buffer_append (&buf, " ", attr_normal);
}
if (g.song_duration >= 1)
{
row_buffer_append (&buf, "/ ", attr_normal);
app_write_time (&buf, g.song_duration, attr_normal);
row_buffer_append (&buf, " ", attr_normal);
}
row_buffer_append (&buf, " ", attr_normal);
}
// It gets a bit complicated due to the only right-aligned item on the row
char *volume = NULL;
int remaining = COLS - buf.total_width;
if (g.volume >= 0)
{
volume = xstrdup_printf (" %3d%%", g.volume);
remaining -= strlen (volume);
}
if (!stopped && g.song_elapsed >= 0 && g.song_duration >= 1
&& remaining > 0)
{
g.gauge_offset = buf.total_width;
g.gauge_width = remaining;
app_write_gauge (&buf,
(float) g.song_elapsed / g.song_duration, remaining);
}
else
row_buffer_space (&buf, remaining, attr_normal);
if (volume)
{
row_buffer_append (&buf, volume, attr_normal);
free (volume);
}
g.controls_offset = g.header_height;
app_flush_header (&buf, attr_normal);
}
static void
app_draw_header (void)
{
g.header_height = 0;
g.tabs_offset = -1;
g.controls_offset = -1;
g.gauge_offset = -1;
g.gauge_width = 0;
switch (g.client.state)
{
case MPD_CONNECTED:
app_draw_status ();
break;
case MPD_CONNECTING:
move (g.header_height++, 0);
app_write_line ("Connecting to MPD...", APP_ATTR (NORMAL));
break;
case MPD_DISCONNECTED:
move (g.header_height++, 0);
app_write_line ("Disconnected", APP_ATTR (NORMAL));
}
chtype attrs[2] = { APP_ATTR (TAB_BAR), APP_ATTR (TAB_ACTIVE) };
// The help tab is disguised so that it's not too intruding
struct row_buffer buf = row_buffer_make ();
row_buffer_append (&buf, APP_TITLE, attrs[g.active_tab == g.help_tab]);
row_buffer_append (&buf, " ", attrs[false]);
g.tabs_offset = g.header_height;
LIST_FOR_EACH (struct tab, iter, g.tabs)
row_buffer_append (&buf, iter->name, attrs[iter == g.active_tab]);
app_flush_header (&buf, attrs[false]);
const char *header = g.active_tab->header;
if (header)
{
buf = row_buffer_make ();
row_buffer_append (&buf, header, APP_ATTR (HEADER));
app_flush_header (&buf, APP_ATTR (HEADER));
}
}
static int
app_fitting_items (void)
{
// The raw number of items that would have fit on the terminal
return LINES - g.header_height - 1 /* status bar */;
}
static int
app_visible_items (void)
{
return MAX (0, app_fitting_items ());
}
/// Figure out scrollbar appearance. @a s is the minimal slider length as well
/// as the scrollbar resolution per @a visible item.
struct scrollbar { long length, start; }
app_compute_scrollbar (struct tab *tab, long visible, long s)
{
long top = tab->item_top, total = tab->item_count;
if (total < visible)
return (struct scrollbar) { 0, 0 };
if (visible == 1)
return (struct scrollbar) { s, 0 };
if (visible == 2)
return (struct scrollbar) { s, top >= total / 2 ? s : 0 };
// Only be at the top or bottom when the top or bottom item can be seen.
// The algorithm isn't optimal but it's a bitch to get right.
double available_length = s * visible - 2 - s + 1;
double lenf = s + available_length * visible / total, length = 0.;
long offset = 1 + available_length * top / total + modf (lenf, &length);
if (top == 0)
return (struct scrollbar) { length, 0 };
if (top + visible >= total)
return (struct scrollbar) { length, s * visible - length };
return (struct scrollbar) { length, offset };
}
static void
app_draw_scrollbar (void)
{
// This assumes that we can write to the one-before-last column,
// i.e. that it's not covered by any double-wide character (and that
// ncurses comes to the right results when counting characters).
//
// We could also precompute the scrollbar and append it to each row
// as we render them, plus all the unoccupied rows.
struct tab *tab = g.active_tab;
int visible_items = app_visible_items ();
hard_assert (tab->item_count != 0);
if (!g.use_partial_boxes)
{
struct scrollbar bar = app_compute_scrollbar (tab, visible_items, 1);
for (int row = 0; row < visible_items; row++)
{
move (g.header_height + row, COLS - 1);
if (row < bar.start || row >= bar.start + bar.length)
addch (' ' | APP_ATTR (SCROLLBAR));
else
addch (' ' | APP_ATTR (SCROLLBAR) | A_REVERSE);
}
return;
}
struct scrollbar bar = app_compute_scrollbar (tab, visible_items, 8);
bar.length += bar.start;
int start_part = bar.start % 8; bar.start /= 8;
int end_part = bar.length % 8; bar.length /= 8;
// Even with this, the solid part must be at least one character high
static const char *partials[] = { "█", "▇", "▆", "▅", "▄", "▃", "▂", "▁" };
for (int row = 0; row < visible_items; row++)
{
chtype attrs = APP_ATTR (SCROLLBAR);
if (row > bar.start && row <= bar.length)
attrs ^= A_REVERSE;
const char *c = " ";
if (row == bar.start) c = partials[start_part];
if (row == bar.length) c = partials[end_part];
move (g.header_height + row, COLS - 1);
struct row_buffer buf = row_buffer_make ();
row_buffer_append (&buf, c, attrs);
row_buffer_flush (&buf);
row_buffer_free (&buf);
}
}
static void
app_draw_view (void)
{
move (g.header_height, 0);
clrtobot ();
struct tab *tab = g.active_tab;
bool want_scrollbar = (int) tab->item_count > app_visible_items ();
int view_width = COLS - want_scrollbar;
int to_show =
MIN (app_fitting_items (), (int) tab->item_count - tab->item_top);
for (int row = 0; row < to_show; row++)
{
int item_index = tab->item_top + row;
int row_attrs = (item_index & 1) ? APP_ATTR (ODD) : APP_ATTR (EVEN);
bool override_colors = true;
if (item_index == tab->item_selected)
row_attrs = APP_ATTR (SELECTION);
else if (tab->item_mark > -1 &&
((item_index >= tab->item_mark && item_index <= tab->item_selected)
|| (item_index >= tab->item_selected && item_index <= tab->item_mark)))
row_attrs = APP_ATTR (MULTISELECT);
else
override_colors = false;
struct row_buffer buf = row_buffer_make ();
tab->on_item_draw (item_index, &buf, view_width);
// Combine attributes used by the handler with the defaults.
// Avoiding attrset() because of row_buffer_flush().
for (size_t i = 0; i < buf.chars_len; i++)
{
chtype *attrs = &buf.chars[i].attrs;
if (override_colors)
*attrs = (*attrs & ~(A_COLOR | A_REVERSE)) | row_attrs;
else if ((*attrs & A_COLOR) && (row_attrs & A_COLOR))
*attrs |= (row_attrs & ~A_COLOR);
else
*attrs |= row_attrs;
}
move (g.header_height + row, 0);
app_flush_buffer (&buf, view_width, row_attrs);
}
if (want_scrollbar)
app_draw_scrollbar ();
}
static void
app_write_mpd_status_playlist (struct row_buffer *buf)
{
struct str stats = str_make ();
if (g.playlist.len == 1)
str_append_printf (&stats, "1 song ");
else
str_append_printf (&stats, "%zu songs ", g.playlist.len);
int hours = g.playlist_time / 3600;
int minutes = g.playlist_time % 3600 / 60;
if (hours || minutes)
{
str_append_c (&stats, ' ');
if (hours == 1)
str_append_printf (&stats, " 1 hour");
else if (hours)
str_append_printf (&stats, " %d hours", hours);
if (minutes == 1)
str_append_printf (&stats, " 1 minute");
else if (minutes)
str_append_printf (&stats, " %d minutes", minutes);
}
row_buffer_append (buf, stats.str, APP_ATTR (NORMAL));
str_free (&stats);
}
static void
app_write_mpd_status (struct row_buffer *buf)
{
struct str_map *map = &g.playback_info;
if (g.active_tab->item_mark > -1)
{
struct tab_range r = tab_selection_range (g.active_tab);
char *msg = xstrdup_printf (r.from == r.upto
? "Selected %d item" : "Selected %d items", r.upto - r.from + 1);
row_buffer_append (buf, msg, APP_ATTR (HIGHLIGHT));
free (msg);
}
else if (str_map_find (map, "updating_db"))
row_buffer_append (buf, "Updating database...", APP_ATTR (NORMAL));
else
app_write_mpd_status_playlist (buf);
const char *s;
bool repeat = (s = str_map_find (map, "repeat")) && strcmp (s, "0");
bool random = (s = str_map_find (map, "random")) && strcmp (s, "0");
bool single = (s = str_map_find (map, "single")) && strcmp (s, "0");
bool consume = (s = str_map_find (map, "consume")) && strcmp (s, "0");
struct row_buffer right = row_buffer_make ();
chtype a[2] = { APP_ATTR (NORMAL), APP_ATTR (HIGHLIGHT) };
if (repeat) row_buffer_append_args (&right,
" ", APP_ATTR (NORMAL), "repeat", a[repeat], NULL);
if (random) row_buffer_append_args (&right,
" ", APP_ATTR (NORMAL), "random", a[random], NULL);
if (single) row_buffer_append_args (&right,
" ", APP_ATTR (NORMAL), "single", a[single], NULL);
if (consume) row_buffer_append_args (&right,
" ", APP_ATTR (NORMAL), "consume", a[consume], NULL);
row_buffer_space (buf,
MAX (0, COLS - buf->total_width - right.total_width),
APP_ATTR (NORMAL));
row_buffer_append_buffer (buf, &right);
row_buffer_free (&right);
}
static void
app_draw_statusbar (void)
{
int caret = -1;
struct row_buffer buf = row_buffer_make ();
if (g.message)
row_buffer_append (&buf, g.message, APP_ATTR (HIGHLIGHT));
else if (g.editor.line)
caret = line_editor_write (&g.editor, &buf, COLS, APP_ATTR (HIGHLIGHT));
else if (g.client.state == MPD_CONNECTED)
app_write_mpd_status (&buf);
move (LINES - 1, 0);
app_flush_buffer (&buf, COLS, APP_ATTR (NORMAL));
curs_set (0);
if (caret != -1)
{
move (LINES - 1, caret);
curs_set (1);
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/// Checks what items are visible and returns if the range was alright
static bool
app_fix_view_range (void)
{
struct tab *tab = g.active_tab;
if (tab->item_top < 0)
{
tab->item_top = 0;
return false;
}
// If the contents are at least as long as the screen, always fill it
int max_item_top = (int) tab->item_count - app_visible_items ();
// But don't let that suggest a negative offset
max_item_top = MAX (max_item_top, 0);
if (tab->item_top > max_item_top)
{
tab->item_top = max_item_top;
return false;
}
return true;
}
static void
app_on_refresh (void *user_data)
{
(void) user_data;
poller_idle_reset (&g.refresh_event);
app_draw_header ();
app_fix_view_range();
app_draw_view ();
app_draw_statusbar ();
refresh ();
}
// --- Actions -----------------------------------------------------------------
/// Scroll down (positive) or up (negative) @a n items
static bool
app_scroll (int n)
{
g.active_tab->item_top += n;
app_invalidate ();
return app_fix_view_range ();
}
static void
app_ensure_selection_visible (void)
{
struct tab *tab = g.active_tab;
if (tab->item_selected < 0 || !tab->item_count)
return;
int too_high = tab->item_top - tab->item_selected;
if (too_high > 0)
app_scroll (-too_high);
int too_low = tab->item_selected
- (tab->item_top + app_visible_items () - 1);
if (too_low > 0)
app_scroll (too_low);
}
static bool
app_move_selection (int diff)
{
struct tab *tab = g.active_tab;
int fixed = tab->item_selected + diff;
fixed = MIN (fixed, (int) tab->item_count - 1);
fixed = MAX (fixed, 0);
bool result = !diff || tab->item_selected != fixed;
tab->item_selected = fixed;
app_invalidate ();
app_ensure_selection_visible ();
return result;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
app_prepend_tab (struct tab *tab)
{
LIST_PREPEND (g.tabs, tab);
app_invalidate ();
}
static void
app_switch_tab (struct tab *tab)
{
if (tab == g.active_tab)
return;
g.last_tab = g.active_tab;
g.active_tab = tab;
app_invalidate ();
}
static bool
app_goto_tab (int tab_index)
{
int i = 0;
LIST_FOR_EACH (struct tab, iter, g.tabs)
if (i++ == tab_index)
{
app_switch_tab (iter);
return true;
}
return false;
}
// --- Actions -----------------------------------------------------------------
#define ACTIONS(XX) \
XX( NONE, "Do nothing" ) \
\
XX( QUIT, "Quit" ) \
XX( REDRAW, "Redraw screen" ) \
XX( HELP_TAB, "Switch to help tab" ) \
XX( LAST_TAB, "Switch to previous tab" ) \
\
XX( MPD_TOGGLE, "Toggle play/pause" ) \
XX( MPD_STOP, "Stop playback" ) \
XX( MPD_PREVIOUS, "Previous song" ) \
XX( MPD_NEXT, "Next song" ) \
XX( MPD_BACKWARD, "Seek backwards" ) \
XX( MPD_FORWARD, "Seek forwards" ) \
XX( MPD_VOLUME_UP, "Increase volume" ) \
XX( MPD_VOLUME_DOWN, "Decrease volume" ) \
\
XX( MPD_SEARCH, "Global search" ) \
XX( MPD_ADD, "Add selection to playlist" ) \
XX( MPD_REPLACE, "Replace playlist" ) \
XX( MPD_REPEAT, "Toggle repeat" ) \
XX( MPD_RANDOM, "Toggle random playback" ) \
XX( MPD_SINGLE, "Toggle single song playback" ) \
XX( MPD_CONSUME, "Toggle consume" ) \
XX( MPD_UPDATE_DB, "Update MPD database" ) \
XX( MPD_COMMAND, "Send raw command to MPD" ) \
\
XX( CHOOSE, "Choose item" ) \
XX( DELETE, "Delete item" ) \
XX( UP, "Go up a level" ) \
XX( MULTISELECT, "Toggle multiselect" ) \
\
XX( SCROLL_UP, "Scroll up" ) \
XX( SCROLL_DOWN, "Scroll down" ) \
XX( MOVE_UP, "Move selection up" ) \
XX( MOVE_DOWN, "Move selection down" ) \
\
XX( GOTO_TOP, "Go to top" ) \
XX( GOTO_BOTTOM, "Go to bottom" ) \
XX( GOTO_ITEM_PREVIOUS, "Go to previous item" ) \
XX( GOTO_ITEM_NEXT, "Go to next item" ) \
XX( GOTO_PAGE_PREVIOUS, "Go to previous page" ) \
XX( GOTO_PAGE_NEXT, "Go to next page" ) \
\
XX( GOTO_VIEW_TOP, "Select top item" ) \
XX( GOTO_VIEW_CENTER, "Select center item" ) \
XX( GOTO_VIEW_BOTTOM, "Select bottom item" ) \
\
XX( EDITOR_CONFIRM, "Confirm input" ) \
\
XX( EDITOR_B_CHAR, "Go back a character" ) \
XX( EDITOR_F_CHAR, "Go forward a character" ) \
XX( EDITOR_B_WORD, "Go back a word" ) \
XX( EDITOR_F_WORD, "Go forward a word" ) \
XX( EDITOR_HOME, "Go to start of line" ) \
XX( EDITOR_END, "Go to end of line" ) \
\
XX( EDITOR_B_DELETE, "Delete last character" ) \
XX( EDITOR_F_DELETE, "Delete next character" ) \
XX( EDITOR_B_KILL_WORD, "Delete last word" ) \
XX( EDITOR_B_KILL_LINE, "Delete everything up to BOL" ) \
XX( EDITOR_F_KILL_LINE, "Delete everything up to EOL" )
enum action
{
#define XX(name, description) ACTION_ ## name,
ACTIONS (XX)
#undef XX
ACTION_COUNT
};
static struct action_info
{
const char *name; ///< Name for user bindings
const char *description; ///< Human-readable description
}
g_actions[] =
{
#define XX(name, description) { #name, description },
ACTIONS (XX)
#undef XX
};
/// Accept a more human format of action-name instead of ACTION_NAME
static int action_toupper (int c) { return c == '-' ? '_' : toupper_ascii (c); }
static int
action_resolve (const char *name)
{
const unsigned char *s = (const unsigned char *) name;
for (int i = 0; i < ACTION_COUNT; i++)
{
const char *target = g_actions[i].name;
for (size_t k = 0; action_toupper (s[k]) == target[k]; k++)
if (!s[k] && !target[k])
return i;
}
return -1;
}
// --- User input handling -----------------------------------------------------
static void
mpd_client_vsend_command (struct mpd_client *self, va_list ap)
{
struct strv v = strv_make ();
const char *command;
while ((command = va_arg (ap, const char *)))
strv_append (&v, command);
mpd_client_send_commandv (self, v.vector);
strv_free (&v);
}
/// Send a command to MPD without caring about the response
static bool mpd_client_send_simple (struct mpd_client *self, ...)
ATTRIBUTE_SENTINEL;
static void
mpd_on_simple_response (const struct mpd_response *response,
const struct strv *data, void *user_data)
{
(void) data;
(void) user_data;
if (!response->success)
print_error ("%s: %s", "command failed", response->message_text);
}
static bool
mpd_client_send_simple (struct mpd_client *self, ...)
{
if (self->state != MPD_CONNECTED)
return false;
va_list ap;
va_start (ap, self);
mpd_client_vsend_command (self, ap);
va_end (ap);
mpd_client_add_task (self, mpd_on_simple_response, NULL);
mpd_client_idle (self, 0);
return true;
}
#define MPD_SIMPLE(...) \
mpd_client_send_simple (&g.client, __VA_ARGS__, NULL)
static bool
app_setvol (int value)
{
char *volume = xstrdup_printf ("%d", MAX (0, MIN (100, value)));
bool result = g.volume >= 0 && MPD_SIMPLE ("setvol", volume);
free (volume);
return result;
}
static void
app_on_editor_end (bool confirmed)
{
struct mpd_client *c = &g.client;
if (!confirmed)
return;
size_t len;
char *u8 = (char *) u32_to_u8 (g.editor.line, g.editor.len + 1, NULL, &len);
mpd_client_send_command_raw (c, u8);
free (u8);
mpd_client_add_task (c, mpd_on_simple_response, NULL);
mpd_client_idle (c, 0);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static bool
app_mpd_toggle (const char *name)
{
const char *s = str_map_find (&g.playback_info, name);
bool value = s && strcmp (s, "0");
return MPD_SIMPLE (name, value ? "0" : "1");
}
static bool
app_process_action (enum action action)
{
// First let the tab try to handle this
struct tab *tab = g.active_tab;
if (tab->on_action && tab->on_action (action))
{
app_invalidate ();
return true;
}
switch (action)
{
case ACTION_NONE:
return true;
case ACTION_QUIT:
// It is a pseudomode, avoid surprising the user
if (tab->item_mark > -1)
{
tab->item_mark = -1;
app_invalidate ();
return true;
}
app_quit ();
return true;
case ACTION_REDRAW:
clear ();
app_invalidate ();
return true;
case ACTION_MPD_COMMAND:
line_editor_start (&g.editor, ':');
g.editor.on_end = app_on_editor_end;
app_invalidate ();
return true;
default:
return false;
case ACTION_MULTISELECT:
if (!tab->can_multiselect
|| !tab->item_count || tab->item_selected < 0)
return false;
app_invalidate ();
if (tab->item_mark > -1)
tab->item_mark = -1;
else
tab->item_mark = tab->item_selected;
return true;
case ACTION_LAST_TAB:
if (!g.last_tab)
return false;
app_switch_tab (g.last_tab);
return true;
case ACTION_HELP_TAB:
app_switch_tab (g.help_tab);
return true;
case ACTION_MPD_TOGGLE:
if (g.state == PLAYER_PLAYING) return MPD_SIMPLE ("pause", "1");
if (g.state == PLAYER_PAUSED) return MPD_SIMPLE ("pause", "0");
return MPD_SIMPLE ("play");
case ACTION_MPD_STOP: return MPD_SIMPLE ("stop");
case ACTION_MPD_PREVIOUS: return MPD_SIMPLE ("previous");
case ACTION_MPD_NEXT: return MPD_SIMPLE ("next");
case ACTION_MPD_FORWARD: return MPD_SIMPLE ("seekcur", "+10");
case ACTION_MPD_BACKWARD: return MPD_SIMPLE ("seekcur", "-10");
case ACTION_MPD_REPEAT: return app_mpd_toggle ("repeat");
case ACTION_MPD_RANDOM: return app_mpd_toggle ("random");
case ACTION_MPD_SINGLE: return app_mpd_toggle ("single");
case ACTION_MPD_CONSUME: return app_mpd_toggle ("consume");
case ACTION_MPD_UPDATE_DB: return MPD_SIMPLE ("update");
case ACTION_MPD_VOLUME_UP: return app_setvol (g.volume + 10);
case ACTION_MPD_VOLUME_DOWN: return app_setvol (g.volume - 10);
// XXX: these should rather be parametrized
case ACTION_SCROLL_UP: return app_scroll (-3);
case ACTION_SCROLL_DOWN: return app_scroll (3);
case ACTION_GOTO_TOP:
if (tab->item_count)
{
g.active_tab->item_selected = 0;
app_ensure_selection_visible ();
app_invalidate ();
}
return true;
case ACTION_GOTO_BOTTOM:
if (tab->item_count)
{
g.active_tab->item_selected =
MAX (0, (int) g.active_tab->item_count - 1);
app_ensure_selection_visible ();
app_invalidate ();
}
return true;
case ACTION_GOTO_ITEM_PREVIOUS: return app_move_selection (-1);
case ACTION_GOTO_ITEM_NEXT: return app_move_selection (1);
case ACTION_GOTO_PAGE_PREVIOUS:
app_scroll (-app_visible_items ());
return app_move_selection (-app_visible_items ());
case ACTION_GOTO_PAGE_NEXT:
app_scroll (app_visible_items ());
return app_move_selection (app_visible_items ());
case ACTION_GOTO_VIEW_TOP:
g.active_tab->item_selected = g.active_tab->item_top;
return app_move_selection (0);
case ACTION_GOTO_VIEW_CENTER:
g.active_tab->item_selected = g.active_tab->item_top;
return app_move_selection (MAX (0, app_visible_items () / 2 - 1));
case ACTION_GOTO_VIEW_BOTTOM:
g.active_tab->item_selected = g.active_tab->item_top;
return app_move_selection (MAX (0, app_visible_items () - 1));
}
return false;
}
static bool
app_editor_process_action (enum action action)
{
app_invalidate ();
switch (action)
{
case ACTION_QUIT:
line_editor_abort (&g.editor, false);
g.editor.on_end = NULL;
return true;
case ACTION_EDITOR_CONFIRM:
line_editor_abort (&g.editor, true);
g.editor.on_end = NULL;
return true;
default:
return false;
case ACTION_EDITOR_B_CHAR:
return line_editor_action (&g.editor, LINE_EDITOR_B_CHAR);
case ACTION_EDITOR_F_CHAR:
return line_editor_action (&g.editor, LINE_EDITOR_F_CHAR);
case ACTION_EDITOR_B_WORD:
return line_editor_action (&g.editor, LINE_EDITOR_B_WORD);
case ACTION_EDITOR_F_WORD:
return line_editor_action (&g.editor, LINE_EDITOR_F_WORD);
case ACTION_EDITOR_HOME:
return line_editor_action (&g.editor, LINE_EDITOR_HOME);
case ACTION_EDITOR_END:
return line_editor_action (&g.editor, LINE_EDITOR_END);
case ACTION_EDITOR_B_DELETE:
return line_editor_action (&g.editor, LINE_EDITOR_B_DELETE);
case ACTION_EDITOR_F_DELETE:
return line_editor_action (&g.editor, LINE_EDITOR_F_DELETE);
case ACTION_EDITOR_B_KILL_WORD:
return line_editor_action (&g.editor, LINE_EDITOR_B_KILL_WORD);
case ACTION_EDITOR_B_KILL_LINE:
return line_editor_action (&g.editor, LINE_EDITOR_B_KILL_LINE);
case ACTION_EDITOR_F_KILL_LINE:
return line_editor_action (&g.editor, LINE_EDITOR_F_KILL_LINE);
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static bool
app_process_left_mouse_click (int line, int column, bool double_click)
{
if (line == g.controls_offset)
{
// XXX: there could be a push_widget(buf, text, attrs, handler)
// function to help with this but it might not be worth it
enum action action = ACTION_NONE;
if (column >= 0 && column <= 1) action = ACTION_MPD_PREVIOUS;
if (column >= 3 && column <= 4) action = ACTION_MPD_TOGGLE;
if (column >= 6 && column <= 7) action = ACTION_MPD_STOP;
if (column >= 9 && column <= 10) action = ACTION_MPD_NEXT;
if (action)
return app_process_action (action);
int gauge_offset = column - g.gauge_offset;
if (g.gauge_offset < 0
|| gauge_offset < 0 || gauge_offset >= g.gauge_width)
return false;
float position = (float) gauge_offset / g.gauge_width;
if (g.song_duration >= 1)
{
char *where = xstrdup_printf ("%f", position * g.song_duration);
MPD_SIMPLE ("seekcur", where);
free (where);
}
}
else if (line == g.tabs_offset)
{
struct tab *winner = NULL;
int indent = strlen (APP_TITLE);
if (column < indent)
{
app_switch_tab (g.help_tab);
return true;
}
for (struct tab *iter = g.tabs; !winner && iter; iter = iter->next)
{
if (column < (indent += iter->name_width))
winner = iter;
}
if (!winner)
return false;
app_switch_tab (winner);
}
else if (line >= g.header_height)
{
struct tab *tab = g.active_tab;
int row_index = line - g.header_height;
if (row_index < 0
|| row_index >= (int) tab->item_count - tab->item_top)
return false;
// TODO: handle the scrollbar a bit better than this
int visible_items = app_visible_items ();
if ((int) tab->item_count > visible_items && column == COLS - 1)
tab->item_top = (float) row_index / visible_items
* (int) tab->item_count - visible_items / 2;
else
tab->item_selected = row_index + tab->item_top;
app_invalidate ();
if (double_click)
app_process_action (ACTION_CHOOSE);
}
return true;
}
static bool
app_process_mouse (termo_mouse_event_t type, int line, int column, int button,
bool double_click)
{
if (type != TERMO_MOUSE_PRESS)
return true;
if (g.editor.line)
line_editor_abort (&g.editor, false);
if (button == 1)
return app_process_left_mouse_click (line, column, double_click);
else if (button == 4)
return app_process_action (ACTION_SCROLL_UP);
else if (button == 5)
return app_process_action (ACTION_SCROLL_DOWN);
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static struct binding
{
termo_key_t decoded; ///< Decoded key definition
enum action action; ///< Action to take
int order; ///< Order for stable sorting
}
*g_normal_keys, *g_editor_keys;
static size_t g_normal_keys_len, g_editor_keys_len;
static struct binding_default
{
const char *key; ///< Key definition
enum action action; ///< Action to take
}
g_normal_defaults[] =
{
{ "Escape", ACTION_QUIT },
{ "q", ACTION_QUIT },
{ "C-l", ACTION_REDRAW },
{ "M-Tab", ACTION_LAST_TAB },
{ "F1", ACTION_HELP_TAB },
{ "Home", ACTION_GOTO_TOP },
{ "End", ACTION_GOTO_BOTTOM },
{ "M-<", ACTION_GOTO_TOP },
{ "M->", ACTION_GOTO_BOTTOM },
{ "g", ACTION_GOTO_TOP },
{ "G", ACTION_GOTO_BOTTOM },
{ "S-Up", ACTION_MOVE_UP },
{ "S-Down", ACTION_MOVE_DOWN },
{ "Up", ACTION_GOTO_ITEM_PREVIOUS },
{ "Down", ACTION_GOTO_ITEM_NEXT },
{ "k", ACTION_GOTO_ITEM_PREVIOUS },
{ "j", ACTION_GOTO_ITEM_NEXT },
{ "PageUp", ACTION_GOTO_PAGE_PREVIOUS },
{ "PageDown", ACTION_GOTO_PAGE_NEXT },
{ "C-p", ACTION_GOTO_ITEM_PREVIOUS },
{ "C-n", ACTION_GOTO_ITEM_NEXT },
{ "C-b", ACTION_GOTO_PAGE_PREVIOUS },
{ "C-f", ACTION_GOTO_PAGE_NEXT },
{ "H", ACTION_GOTO_VIEW_TOP },
{ "M", ACTION_GOTO_VIEW_CENTER },
{ "L", ACTION_GOTO_VIEW_BOTTOM },
// Not sure how to set these up, they're pretty arbitrary so far
{ "Enter", ACTION_CHOOSE },
{ "Delete", ACTION_DELETE },
{ "d", ACTION_DELETE },
{ "Backspace", ACTION_UP },
{ "v", ACTION_MULTISELECT },
{ "/", ACTION_MPD_SEARCH },
{ "a", ACTION_MPD_ADD },
{ "r", ACTION_MPD_REPLACE },
{ ":", ACTION_MPD_COMMAND },
{ "<", ACTION_MPD_PREVIOUS },
{ ">", ACTION_MPD_NEXT },
{ "Left", ACTION_MPD_PREVIOUS },
{ "Right", ACTION_MPD_NEXT },
{ "M-Left", ACTION_MPD_BACKWARD },
{ "M-Right", ACTION_MPD_FORWARD },
{ "h", ACTION_MPD_PREVIOUS },
{ "l", ACTION_MPD_NEXT },
{ "Space", ACTION_MPD_TOGGLE },
{ "C-Space", ACTION_MPD_STOP },
{ "u", ACTION_MPD_UPDATE_DB },
{ "M-PageUp", ACTION_MPD_VOLUME_UP },
{ "M-PageDown", ACTION_MPD_VOLUME_DOWN },
},
g_editor_defaults[] =
{
{ "Left", ACTION_EDITOR_B_CHAR },
{ "Right", ACTION_EDITOR_F_CHAR },
{ "C-b", ACTION_EDITOR_B_CHAR },
{ "C-f", ACTION_EDITOR_F_CHAR },
{ "M-b", ACTION_EDITOR_B_WORD },
{ "M-f", ACTION_EDITOR_F_WORD },
{ "Home", ACTION_EDITOR_HOME },
{ "End", ACTION_EDITOR_END },
{ "C-a", ACTION_EDITOR_HOME },
{ "C-e", ACTION_EDITOR_END },
{ "C-h", ACTION_EDITOR_B_DELETE },
{ "DEL", ACTION_EDITOR_B_DELETE },
{ "Backspace", ACTION_EDITOR_B_DELETE },
{ "C-d", ACTION_EDITOR_F_DELETE },
{ "Delete", ACTION_EDITOR_F_DELETE },
{ "C-u", ACTION_EDITOR_B_KILL_LINE },
{ "C-k", ACTION_EDITOR_F_KILL_LINE },
{ "C-w", ACTION_EDITOR_B_KILL_WORD },
{ "C-g", ACTION_QUIT },
{ "Escape", ACTION_QUIT },
{ "Enter", ACTION_EDITOR_CONFIRM },
};
static int
app_binding_cmp (const void *a, const void *b)
{
const struct binding *aa = a, *bb = b;
int cmp = termo_keycmp (g.tk, &aa->decoded, &bb->decoded);
return cmp ? cmp : bb->order - aa->order;
}
static bool
app_next_binding (struct str_map_iter *iter, termo_key_t *key, int *action)
{
struct config_item *v;
while ((v = str_map_iter_next (iter)))
{
*action = ACTION_NONE;
if (*termo_strpkey_utf8 (g.tk,
iter->link->key, key, TERMO_FORMAT_ALTISMETA))
print_error ("%s: invalid binding", iter->link->key);
else if (v->type == CONFIG_ITEM_NULL)
return true;
else if (v->type != CONFIG_ITEM_STRING)
print_error ("%s: bindings must be strings", iter->link->key);
else if ((*action = action_resolve (v->value.string.str)) >= 0)
return true;
else
print_error ("%s: unknown action: %s",
iter->link->key, v->value.string.str);
}
return false;
}
static struct binding *
app_init_bindings (const char *keymap,
struct binding_default *defaults, size_t defaults_len, size_t *result_len)
{
ARRAY (struct binding, a)
ARRAY_INIT_SIZED (a, defaults_len);
// Order for stable sorting
size_t order = 0;
termo_key_t decoded;
for (size_t i = 0; i < defaults_len; i++)
{
hard_assert (!*termo_strpkey_utf8 (g.tk,
defaults[i].key, &decoded, TERMO_FORMAT_ALTISMETA));
a[a_len++] = (struct binding) { decoded, defaults[i].action, order++ };
}
struct config_item *root = config_item_get (g.config.root, keymap, NULL);
if (root && root->type == CONFIG_ITEM_OBJECT)
{
struct str_map_iter iter = str_map_iter_make (&root->value.object);
ARRAY_RESERVE (a, iter.map->len);
int action;
while (app_next_binding (&iter, &decoded, &action))
a[a_len++] = (struct binding) { decoded, action, order++ };
}
// Use the helper field to use the last mappings of identical bindings
size_t out = 0;
qsort (a, a_len, sizeof *a, app_binding_cmp);
for (size_t in = 0; in < a_len; in++)
{
a[in].order = 0;
if (!out || termo_keycmp (g.tk, &a[in].decoded, &a[out - 1].decoded))
a[out++] = a[in];
}
*result_len = out;
return a;
}
static bool
app_process_termo_event (termo_key_t *event)
{
struct binding dummy = { *event, 0, 0 }, *binding;
if (g.editor.line)
{
if ((binding = bsearch (&dummy, g_editor_keys, g_editor_keys_len,
sizeof *binding, app_binding_cmp)))
return app_editor_process_action (binding->action);
if (event->type != TERMO_TYPE_KEY || event->modifiers != 0)
return false;
line_editor_insert (&g.editor, event->code.codepoint);
app_invalidate ();
return true;
}
if ((binding = bsearch (&dummy, g_normal_keys, g_normal_keys_len,
sizeof *binding, app_binding_cmp)))
return app_process_action (binding->action);
// TODO: parametrize actions, put this among other bindings
if (!(event->modifiers & ~TERMO_KEYMOD_ALT)
&& event->code.codepoint >= '0'
&& event->code.codepoint <= '9')
{
int n = event->code.codepoint - '0';
if (app_goto_tab ((n == 0 ? 10 : n) - 1))
return true;
}
return false;
}
// --- Current tab -------------------------------------------------------------
static struct tab g_current_tab;
static void
current_tab_on_item_draw (size_t item_index, struct row_buffer *buffer,
int width)
{
// TODO: configurable output, maybe dynamically sized columns
int length_len = 1 /*separator */ + 2 /* h */ + 3 /* m */+ 3 /* s */;
compact_map_t map = item_list_get (&g.playlist, item_index);
const char *artist = compact_map_find (map, "artist");
const char *title = compact_map_find (map, "title");
chtype attrs = (int) item_index == g.song ? A_BOLD : 0;
if (artist && title)
row_buffer_append_args (buffer,
artist, attrs, " - ", attrs, title, attrs, NULL);
else
row_buffer_append (buffer, compact_map_find (map, "file"), attrs);
row_buffer_align (buffer, width - length_len, attrs);
char *s = NULL;
unsigned long n;
const char *time = compact_map_find (map, "time");
if (!time || !xstrtoul (&n, time, 10) || !(s = app_time_string (n)))
s = xstrdup ("?");
char *right_aligned = xstrdup_printf ("%*s", length_len, s);
row_buffer_append (buffer, right_aligned, attrs);
free (right_aligned);
free (s);
}
static void
mpd_on_move_response (const struct mpd_response *response,
const struct strv *data, void *user_data)
{
(void) data;
*(bool *) user_data = false;
if (!response->success)
print_error ("%s: %s", "command failed", response->message_text);
}
static void
current_tab_move (int from, int to)
{
compact_map_t map;
const char *id;
if (!(map = item_list_get (&g.playlist, from))
|| !(id = compact_map_find (map, "id")))
return;
char *target_str = xstrdup_printf ("%d", to);
mpd_client_send_command (&g.client, "moveid", id, target_str, NULL);
free (target_str);
}
static bool
current_tab_move_selection (int diff)
{
static bool already_moving;
if (already_moving || diff == 0)
return true;
struct mpd_client *c = &g.client;
if (c->state != MPD_CONNECTED)
return false;
struct tab *tab = &g_current_tab;
struct tab_range range = tab_selection_range (tab);
if (range.from + diff < 0
|| range.upto + diff >= (int) tab->item_count)
return false;
mpd_client_list_begin (c);
if (diff < 0)
for (int i = range.from; i <= range.upto; i++)
current_tab_move (i, i + diff);
else
for (int i = range.upto; i >= range.from; i--)
current_tab_move (i, i + diff);
mpd_client_list_end (c);
mpd_client_add_task (c, mpd_on_move_response, &already_moving);
mpd_client_idle (c, 0);
return already_moving = true;
}
static bool
current_tab_on_action (enum action action)
{
struct tab *tab = &g_current_tab;
compact_map_t map = item_list_get (&g.playlist, tab->item_selected);
switch (action)
{
const char *id;
case ACTION_MOVE_UP:
return current_tab_move_selection (-1);
case ACTION_MOVE_DOWN:
return current_tab_move_selection (+1);
case ACTION_CHOOSE:
tab->item_mark = -1;
return map && (id = compact_map_find (map, "id"))
&& MPD_SIMPLE ("playid", id);
case ACTION_DELETE:
{
struct mpd_client *c = &g.client;
struct tab_range range = tab_selection_range (tab);
if (range.from < 0 || c->state != MPD_CONNECTED)
return false;
mpd_client_list_begin (c);
for (int i = range.from; i <= range.upto; i++)
{
if ((map = item_list_get (&g.playlist, i))
&& (id = compact_map_find (map, "id")))
mpd_client_send_command (c, "deleteid", id, NULL);
}
mpd_client_list_end (c);
mpd_client_add_task (c, mpd_on_simple_response, NULL);
mpd_client_idle (c, 0);
return true;
}
default:
return false;
}
}
static void
current_tab_update (void)
{
g_current_tab.item_count = g.playlist.len;
g_current_tab.item_mark =
MIN ((int) g.playlist.len - 1, g_current_tab.item_mark);
app_invalidate ();
}
static struct tab *
current_tab_init (void)
{
struct tab *super = &g_current_tab;
tab_init (super, "Current");
super->can_multiselect = true;
super->on_action = current_tab_on_action;
super->on_item_draw = current_tab_on_item_draw;
return super;
}
// --- Library tab -------------------------------------------------------------
struct library_level
{
LIST_HEADER (struct library_level)
int item_top; ///< Stored state
int item_selected; ///< Stored state
char path[]; ///< Path of the level
};
static struct
{
struct tab super; ///< Parent class
struct str path; ///< Current path
struct strv items; ///< Current items (type, name, path)
struct library_level *above; ///< Upper levels
bool searching; ///< Search mode is active
}
g_library_tab;
enum
{
// This list is also ordered by ASCII and important for sorting
LIBRARY_ROOT = '/', ///< Root entry
LIBRARY_UP = '^', ///< Upper directory
LIBRARY_DIR = 'd', ///< Directory
LIBRARY_FILE = 'f' ///< File
};
struct library_tab_item
{
int type; ///< Type of the item
const char *name; ///< Visible name
const char *path; ///< MPD path
};
static void
library_tab_add (int type, const char *name, const char *path)
{
strv_append_owned (&g_library_tab.items,
xstrdup_printf ("%c%s%c%s", type, name, 0, path));
}
static struct library_tab_item
library_tab_resolve (const char *raw)
{
struct library_tab_item item;
item.type = *raw++;
item.name = raw;
item.path = strchr (raw, '\0') + 1;
return item;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
library_tab_on_item_draw (size_t item_index, struct row_buffer *buffer,
int width)
{
(void) width;
hard_assert (item_index < g_library_tab.items.len);
struct library_tab_item x =
library_tab_resolve (g_library_tab.items.vector[item_index]);
const char *prefix, *name;
switch (x.type)
{
case LIBRARY_ROOT: prefix = "/"; name = ""; break;
case LIBRARY_UP: prefix = "/"; name = ".."; break;
case LIBRARY_DIR: prefix = "/"; name = x.name; break;
case LIBRARY_FILE: prefix = " "; name = x.name; break;
default: hard_assert (!"invalid item type");
}
chtype attrs = x.type != LIBRARY_FILE ? APP_ATTR (DIRECTORY) : 0;
row_buffer_append_args (buffer, prefix, attrs, name, attrs, NULL);
}
static char
library_tab_header_type (const char *key)
{
if (!strcasecmp_ascii (key, "file")) return LIBRARY_FILE;
if (!strcasecmp_ascii (key, "directory")) return LIBRARY_DIR;
return 0;
}
static void
library_tab_chunk (char type, const char *path, struct str_map *map)
{
const char *artist = str_map_find (map, "artist");
const char *title = str_map_find (map, "title");
char *name = (artist && title)
? xstrdup_printf ("%s - %s", artist, title)
: xstrdup (xbasename (path));
library_tab_add (type, name, path);
free (name);
}
static int
library_tab_compare (char **a, char **b)
{
struct library_tab_item xa = library_tab_resolve (*a);
struct library_tab_item xb = library_tab_resolve (*b);
if (xa.type != xb.type)
return xa.type - xb.type;
return app_casecmp ((uint8_t *) xa.path, (uint8_t *) xb.path);
}
static char *
library_tab_parent (void)
{
struct str *path = &g_library_tab.path;
if (!path->len)
return NULL;
char *last_slash;
if ((last_slash = strrchr (path->str, '/')))
return xstrndup (path->str, last_slash - path->str);
return xstrdup ("");
}
static bool
library_tab_is_above (const char *above, const char *subdir)
{
size_t above_len = strlen (above);
if (strncmp (above, subdir, above_len))
return false;
// The root is an empty string and is above anything other than itself
return subdir[above_len] == '/' || (*subdir && !*above);
}
static void
library_tab_change_level (const char *new_path)
{
struct str *path = &g_library_tab.path;
if (!strcmp (path->str, new_path))
return;
struct library_level *above;
if (library_tab_is_above (path->str, new_path))
{
above = xcalloc (1, sizeof *above + path->len + 1);
above->item_top = g_library_tab.super.item_top;
above->item_selected = g_library_tab.super.item_selected;
memcpy (above->path, path->str, path->len);
LIST_PREPEND (g_library_tab.above, above);
// Select the ".." entry to reflect Norton Commander
g_library_tab.super.item_top = 0;
g_library_tab.super.item_selected = 1;
}
else while ((above = g_library_tab.above)
&& !library_tab_is_above (above->path, new_path))
{
if (!strcmp (above->path, new_path))
{
g_library_tab.super.item_top = above->item_top;
g_library_tab.super.item_selected = above->item_selected;
}
g_library_tab.above = above->next;
free (above);
}
str_reset (path);
str_append (path, new_path);
free (g_library_tab.super.header);
g_library_tab.super.header = NULL;
g_library_tab.super.item_mark = -1;
if (path->len)
g_library_tab.super.header = xstrdup_printf ("/%s", path->str);
}
static void
library_tab_load_data (const struct strv *data)
{
strv_reset (&g_library_tab.items);
char *parent = library_tab_parent ();
if (parent)
{
library_tab_add (LIBRARY_ROOT, "", "");
library_tab_add (LIBRARY_UP, "", parent);
free (parent);
}
struct str_map map = str_map_make (NULL);
map.key_xfrm = tolower_ascii_strxfrm;
char *key, *value, type;
for (size_t i = data->len; i--; )
if (!(key = mpd_parse_kv (data->vector[i], &value)))
continue;
else if (!(type = library_tab_header_type (key)))
str_map_set (&map, key, value);
else
{
library_tab_chunk (type, value, &map);
str_map_clear (&map);
}
str_map_free (&map);
struct strv *items = &g_library_tab.items;
qsort (items->vector, items->len, sizeof *items->vector,
(int (*) (const void *, const void *)) library_tab_compare);
g_library_tab.super.item_count = items->len;
// XXX: this unmarks even if just the database updates
g_library_tab.super.item_mark = -1;
// Don't force the selection visible when there's no need to touch it
if (g_library_tab.super.item_selected >= (int) items->len)
app_move_selection (0);
app_invalidate ();
}
static void
library_tab_on_data (const struct mpd_response *response,
const struct strv *data, void *user_data)
{
char *new_path = user_data;
if (!response->success)
{
print_error ("cannot read directory: %s", response->message_text);
free (new_path);
return;
}
g_library_tab.searching = false;
library_tab_change_level (new_path);
free (new_path);
library_tab_load_data (data);
}
static void
library_tab_reload (const char *new_path)
{
if (!new_path && g_library_tab.searching)
return; // TODO: perhaps we should call search_on_changed()
char *path = new_path
? xstrdup (new_path)
: xstrdup (g_library_tab.path.str);
struct mpd_client *c = &g.client;
mpd_client_send_command (c, "lsinfo", *path ? path : "/", NULL);
mpd_client_add_task (c, library_tab_on_data, path);
mpd_client_idle (c, 0);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
library_tab_on_search_data (const struct mpd_response *response,
const struct strv *data, void *user_data)
{
(void) user_data;
if (!g_library_tab.searching)
return;
if (!response->success)
{
print_error ("cannot search: %s", response->message_text);
return;
}
library_tab_load_data (data);
}
static void
search_on_changed (void)
{
struct mpd_client *c = &g.client;
size_t len;
char *u8 = (char *) u32_to_u8 (g.editor.line, g.editor.len + 1, NULL, &len);
mpd_client_send_command (c, "search", "any", u8, NULL);
free (u8);
mpd_client_add_task (c, library_tab_on_search_data, NULL);
mpd_client_idle (c, 0);
}
static void
search_on_end (bool confirmed)
{
if (!confirmed)
library_tab_reload (g_library_tab.above->path);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static bool
library_tab_is_range_playable (struct tab_range range)
{
for (int i = range.from; i <= range.upto; i++)
{
struct library_tab_item x =
library_tab_resolve (g_library_tab.items.vector[i]);
if (x.type == LIBRARY_DIR || x.type == LIBRARY_FILE)
return true;
}
return false;
}
static bool
library_tab_on_action (enum action action)
{
struct mpd_client *c = &g.client;
if (c->state != MPD_CONNECTED)
return false;
struct tab *tab = &g_library_tab.super;
struct tab_range range = tab_selection_range (tab);
if (range.from < 0)
return false;
struct library_tab_item x =
library_tab_resolve (g_library_tab.items.vector[range.from]);
switch (action)
{
case ACTION_CHOOSE:
// I can't think of a reasonable way of handling that
if (range.from != range.upto)
break;
switch (x.type)
{
case LIBRARY_ROOT:
case LIBRARY_UP:
case LIBRARY_DIR: library_tab_reload (x.path); break;
case LIBRARY_FILE: MPD_SIMPLE ("add", x.path); break;
default: hard_assert (!"invalid item type");
}
tab->item_mark = -1;
return true;
case ACTION_UP:
{
char *parent = library_tab_parent ();
if (parent)
{
library_tab_reload (parent);
free (parent);
}
return parent != NULL;
}
case ACTION_MPD_SEARCH:
{
line_editor_start (&g.editor, '/');
g.editor.on_changed = search_on_changed;
g.editor.on_end = search_on_end;
// We just need to be deeper but not match anything real,
// in order to keep the rest of the codebase functional as-is
if (!g_library_tab.searching)
{
char *fake_subdir = xstrdup_printf ("%s/", g_library_tab.path.str);
library_tab_change_level (fake_subdir);
free (fake_subdir);
}
free (tab->header);
tab->header = xstrdup_printf ("Global search");
g_library_tab.searching = true;
// Since we've already changed the header, empty the list,
// although to be consistent we should also ask to search for "",
// which dumps the database
struct strv empty = strv_make ();
library_tab_load_data (&empty);
strv_free (&empty);
app_invalidate ();
return true;
}
case ACTION_MPD_ADD:
if (!library_tab_is_range_playable (range))
break;
for (int i = range.from; i <= range.upto; i++)
{
struct library_tab_item x =
library_tab_resolve (g_library_tab.items.vector[i]);
if (x.type == LIBRARY_DIR || x.type == LIBRARY_FILE)
MPD_SIMPLE ("add", x.path);
}
tab->item_mark = -1;
return true;
case ACTION_MPD_REPLACE:
if (!library_tab_is_range_playable (range))
break;
// Clears the playlist (which stops playback), add what user wanted
// to replace it with, and eventually restore playback;
// I can't think of a reliable alternative that omits the "play"
mpd_client_list_begin (c);
mpd_client_send_command (c, "clear", NULL);
for (int i = range.from; i <= range.upto; i++)
{
struct library_tab_item x =
library_tab_resolve (g_library_tab.items.vector[i]);
if (x.type == LIBRARY_DIR || x.type == LIBRARY_FILE)
mpd_client_send_command (c, "add", x.path, NULL);
}
if (g.state == PLAYER_PLAYING)
mpd_client_send_command (c, "play", NULL);
mpd_client_list_end (c);
mpd_client_add_task (c, mpd_on_simple_response, NULL);
mpd_client_idle (c, 0);
tab->item_mark = -1;
return true;
default:
break;
}
return false;
}
static struct tab *
library_tab_init (void)
{
g_library_tab.path = str_make ();
g_library_tab.items = strv_make ();
struct tab *super = &g_library_tab.super;
tab_init (super, "Library");
super->can_multiselect = true;
super->on_action = library_tab_on_action;
super->on_item_draw = library_tab_on_item_draw;
return super;
}
// --- Streams -----------------------------------------------------------------
// MPD can only parse m3u8 playlists, and only when it feels like doing so
struct stream_tab_task
{
struct poller_curl_task curl; ///< Superclass
struct str data; ///< Downloaded data
bool polling; ///< Still downloading
bool replace; ///< Should playlist be replaced?
};
static bool
is_content_type (const char *content_type,
const char *expected_type, const char *expected_subtype)
{
char *type = NULL, *subtype = NULL;
bool result = http_parse_media_type (content_type, &type, &subtype, NULL)
&& !strcasecmp_ascii (type, expected_type)
&& !strcasecmp_ascii (subtype, expected_subtype);
free (type);
free (subtype);
return result;
}
static void
streams_tab_filter (char *line, regex_t *re, struct strv *out)
{
regmatch_t groups[2];
if (regexec (re, line, 2, groups, 0) == REG_NOMATCH)
return;
// It may happen that playlist files contain useless, invalid quotes,
// let's be liberal in what we accept
regoff_t start = groups[1].rm_so, end = groups[1].rm_eo;
while (end > start + 1 && line[start] == '"' && line[end - 1] == '"')
{
start++;
end--;
}
char *target = xstrndup (line + start, end - start);
if (utf8_validate (target, end - start))
strv_append_owned (out, target);
else
{
strv_append_owned (out, latin1_to_utf8 (target));
free (target);
}
}
static void
streams_tab_parse_playlist (const char *playlist, const char *content_type,
struct strv *out)
{
// We accept a lot of very broken stuff because this is the real world
struct strv lines = strv_make ();
cstr_split (playlist, "\r\n", true, &lines);
// Since this excludes '"', it should even work for XMLs (w/o entities)
const char *extract_re =
"(https?://([][a-z0-9._~:/?#@!$&'()*+,;=-]|%[a-f0-9]{2})+)";
if ((lines.len && !strcasecmp_ascii (lines.vector[0], "[playlist]"))
|| (content_type && is_content_type (content_type, "audio", "x-scpls")))
extract_re = "^File[^=]*=(.+)";
else if ((lines.len && !strcasecmp_ascii (lines.vector[0], "#EXTM3U"))
|| (content_type && is_content_type (content_type, "audio", "x-mpegurl")))
extract_re = "^([^#].*)";
regex_t *re = regex_compile (extract_re, REG_EXTENDED, NULL);
hard_assert (re != NULL);
for (size_t i = 0; i < lines.len; i++)
streams_tab_filter (lines.vector[i], re, out);
regex_free (re);
strv_free (&lines);
}
static bool
streams_tab_extract_links (struct str *data, const char *content_type,
struct strv *out)
{
// Since playlists are also "audio/*", this seems like a sane thing to do
for (size_t i = 0; i < data->len; i++)
{
uint8_t c = data->str[i];
if ((c < 32) & (c != '\t') & (c != '\r') & (c != '\n'))
return false;
}
streams_tab_parse_playlist (data->str, content_type, out);
return true;
}
static void
streams_tab_on_downloaded (CURLMsg *msg, struct poller_curl_task *task)
{
struct stream_tab_task *self =
CONTAINER_OF (task, struct stream_tab_task, curl);
self->polling = false;
if (msg->data.result
&& msg->data.result != CURLE_WRITE_ERROR)
{
cstr_uncapitalize (self->curl.curl_error);
print_error ("%s", self->curl.curl_error);
return;
}
struct mpd_client *c = &g.client;
if (c->state != MPD_CONNECTED)
return;
CURL *easy = msg->easy_handle;
CURLcode res;
long code;
char *type, *uri;
if ((res = curl_easy_getinfo (easy, CURLINFO_RESPONSE_CODE, &code))
|| (res = curl_easy_getinfo (easy, CURLINFO_CONTENT_TYPE, &type))
|| (res = curl_easy_getinfo (easy, CURLINFO_EFFECTIVE_URL, &uri)))
{
print_error ("%s: %s",
"cURL info retrieval failed", curl_easy_strerror (res));
return;
}
// cURL is not willing to parse the ICY header, the code is zero then
if (code && code != 200)
{
print_error ("%s: %ld", "unexpected HTTP response", code);
return;
}
mpd_client_list_begin (c);
if (self->replace)
mpd_client_send_command (c, "clear", NULL);
struct strv links = strv_make ();
if (!streams_tab_extract_links (&self->data, type, &links))
strv_append (&links, uri);
for (size_t i = 0; i < links.len; i++)
mpd_client_send_command (c, "add", links.vector[i], NULL);
if (self->replace && g.state == PLAYER_PLAYING)
mpd_client_send_command (c, "play", NULL);
strv_free (&links);
mpd_client_list_end (c);
mpd_client_add_task (c, mpd_on_simple_response, NULL);
mpd_client_idle (c, 0);
}
static size_t
write_callback (char *ptr, size_t size, size_t nmemb, void *user_data)
{
struct str *buf = user_data;
str_append_data (buf, ptr, size * nmemb);
// Invoke CURLE_WRITE_ERROR when we've received enough data for a playlist
if (buf->len >= (1 << 16))
return 0;
return size * nmemb;
}
static bool
streams_tab_process (const char *uri, bool replace, struct error **e)
{
struct poller poller;
poller_init (&poller);
struct poller_curl pc;
hard_assert (poller_curl_init (&pc, &poller, NULL));
struct stream_tab_task task;
hard_assert (poller_curl_spawn (&task.curl, NULL));
CURL *easy = task.curl.easy;
task.data = str_make ();
task.replace = replace;
bool result = false;
CURLcode res;
if ((res = curl_easy_setopt (easy, CURLOPT_FOLLOWLOCATION, 1L))
|| (res = curl_easy_setopt (easy, CURLOPT_NOPROGRESS, 1L))
// TODO: make the timeout a bit larger once we're asynchronous
|| (res = curl_easy_setopt (easy, CURLOPT_TIMEOUT, 5L))
// Not checking anything, we just want some data, any data
|| (res = curl_easy_setopt (easy, CURLOPT_SSL_VERIFYPEER, 0L))
|| (res = curl_easy_setopt (easy, CURLOPT_SSL_VERIFYHOST, 0L))
|| (res = curl_easy_setopt (easy, CURLOPT_URL, uri))
|| (res = curl_easy_setopt (easy, CURLOPT_VERBOSE, (long) g_debug_mode))
|| (res = curl_easy_setopt (easy, CURLOPT_DEBUGFUNCTION, print_curl_debug))
|| (res = curl_easy_setopt (easy, CURLOPT_WRITEDATA, &task.data))
|| (res = curl_easy_setopt (easy, CURLOPT_WRITEFUNCTION, write_callback)))
{
error_set (e, "%s: %s", "cURL setup failed", curl_easy_strerror (res));
goto error;
}
task.curl.on_done = streams_tab_on_downloaded;
hard_assert (poller_curl_add (&pc, task.curl.easy, NULL));
// TODO: don't run a subloop, run the task fully asynchronously
task.polling = true;
while (task.polling)
poller_run (&poller);
hard_assert (poller_curl_remove (&pc, task.curl.easy, NULL));
result = true;
error:
curl_easy_cleanup (task.curl.easy);
str_free (&task.data);
poller_curl_free (&pc);
poller_free (&poller);
return result;
}
static bool
streams_tab_on_action (enum action action)
{
struct tab *tab = g.active_tab;
if (tab->item_selected < 0 || !tab->item_count)
return false;
// For simplicity the URL is the string following the stream name
const char *uri = 1 + strchr (g.streams.vector[tab->item_selected], 0);
struct error *e = NULL;
switch (action)
{
case ACTION_MPD_REPLACE:
streams_tab_process (uri, true, &e);
break;
case ACTION_CHOOSE:
case ACTION_MPD_ADD:
streams_tab_process (uri, false, &e);
break;
default:
return false;
}
if (e)
{
print_error ("%s", e->message);
error_free (e);
}
return true;
}
static void
streams_tab_on_item_draw (size_t item_index, struct row_buffer *buffer,
int width)
{
(void) width;
row_buffer_append (buffer, g.streams.vector[item_index], 0);
}
static struct tab *
streams_tab_init (void)
{
static struct tab super;
tab_init (&super, "Streams");
super.on_action = streams_tab_on_action;
super.on_item_draw = streams_tab_on_item_draw;
super.item_count = g.streams.len;
return &super;
}
// --- Info tab ----------------------------------------------------------------
static struct
{
struct tab super; ///< Parent class
struct strv keys; ///< Data keys
struct strv values; ///< Data values
}
g_info_tab;
static void
info_tab_on_item_draw (size_t item_index, struct row_buffer *buffer, int width)
{
(void) width;
// It looks like we could do with a generic list structure that just
// stores formatted row_buffers. Let's see for other tabs:
// - Current -- unusable, has dynamic column alignment
// - Library -- could work for the "icons"
// - Streams -- useless
// - Debug -- it'd take up considerably more space
// However so far we're only showing show key-value pairs.
row_buffer_append_args (buffer,
g_info_tab.keys.vector[item_index], A_BOLD, ":", A_BOLD, NULL);
row_buffer_space (buffer, 8 - buffer->total_width, 0);
row_buffer_append (buffer, g_info_tab.values.vector[item_index], 0);
}
static void
info_tab_add (compact_map_t data, const char *field)
{
const char *value = compact_map_find (data, field);
if (!value) value = "";
strv_append (&g_info_tab.keys, field);
strv_append (&g_info_tab.values, value);
g_info_tab.super.item_count++;
}
static void
info_tab_update (void)
{
strv_reset (&g_info_tab.keys);
strv_reset (&g_info_tab.values);
g_info_tab.super.item_count = 0;
compact_map_t map;
if ((map = item_list_get (&g.playlist, g.song)))
{
info_tab_add (map, "Title");
info_tab_add (map, "Artist");
info_tab_add (map, "Album");
info_tab_add (map, "Track");
info_tab_add (map, "Genre");
// Yes, it is "file", but this is also for display
info_tab_add (map, "File");
}
}
static struct tab *
info_tab_init (void)
{
g_info_tab.keys = strv_make ();
g_info_tab.values = strv_make ();
struct tab *super = &g_info_tab.super;
tab_init (super, "Info");
super->on_item_draw = info_tab_on_item_draw;
return super;
}
// --- Help tab ----------------------------------------------------------------
static struct
{
struct tab super; ///< Parent class
ARRAY (enum action, actions) ///< Actions for content
struct strv lines; ///< Visible content
}
g_help_tab;
static bool
help_tab_on_action (enum action action)
{
struct tab *tab = &g_help_tab.super;
if (tab->item_selected < 0
|| tab->item_selected >= (int) g_help_tab.actions_len
|| action != ACTION_CHOOSE)
return false;
action = g_help_tab.actions[tab->item_selected];
return action != ACTION_NONE
&& action != ACTION_CHOOSE // avoid recursion
&& app_process_action (action);
}
static void
help_tab_strfkey (const termo_key_t *key, struct strv *out)
{
// For display purposes, this is highly desirable
int flags = termo_get_flags (g.tk);
termo_set_flags (g.tk, flags | TERMO_FLAG_SPACESYMBOL);
termo_key_t fixed = *key;
termo_canonicalise (g.tk, &fixed);
termo_set_flags (g.tk, flags);
char buf[16];
termo_strfkey_utf8 (g.tk, buf, sizeof buf, &fixed, TERMO_FORMAT_ALTISMETA);
strv_append (out, buf);
}
static void
help_tab_assign_action (enum action action)
{
hard_assert (g_help_tab.lines.len > g_help_tab.actions_len);
size_t to_push = g_help_tab.lines.len - g_help_tab.actions_len;
ARRAY_RESERVE (g_help_tab.actions, to_push);
for (size_t i = 1; i < to_push; i++)
g_help_tab.actions[g_help_tab.actions_len++] = ACTION_NONE;
g_help_tab.actions[g_help_tab.actions_len++] = action;
}
static void
help_tab_group (struct binding *keys, size_t len, struct strv *out,
bool bound[ACTION_COUNT])
{
for (enum action i = 0; i < ACTION_COUNT; i++)
{
struct strv ass = strv_make ();
for (size_t k = 0; k < len; k++)
if (keys[k].action == i)
help_tab_strfkey (&keys[k].decoded, &ass);
if (ass.len)
{
char *joined = strv_join (&ass, ", ");
strv_append_owned (out, xstrdup_printf
(" %-30s %s", g_actions[i].description, joined));
free (joined);
bound[i] = true;
help_tab_assign_action (i);
}
strv_free (&ass);
}
}
static void
help_tab_unbound (struct strv *out, bool bound[ACTION_COUNT])
{
for (enum action i = 0; i < ACTION_COUNT; i++)
if (!bound[i])
{
strv_append_owned (out,
xstrdup_printf (" %-30s", g_actions[i].description));
help_tab_assign_action (i);
}
}
static void
help_tab_on_item_draw (size_t item_index, struct row_buffer *buffer, int width)
{
(void) width;
hard_assert (item_index < g_help_tab.lines.len);
const char *line = g_help_tab.lines.vector[item_index];
row_buffer_append (buffer, line, *line == ' ' ? 0 : A_BOLD);
}
static struct tab *
help_tab_init (void)
{
ARRAY_INIT (g_help_tab.actions);
struct strv *lines = &g_help_tab.lines;
*lines = strv_make ();
bool bound[ACTION_COUNT] = { [ACTION_NONE] = true };
strv_append (lines, "Normal mode actions");
help_tab_group (g_normal_keys, g_normal_keys_len, lines, bound);
strv_append (lines, "");
strv_append (lines, "Editor mode actions");
help_tab_group (g_editor_keys, g_editor_keys_len, lines, bound);
strv_append (lines, "");
bool have_unbound = false;
for (enum action i = 0; i < ACTION_COUNT; i++)
if (!bound[i])
have_unbound = true;
if (have_unbound)
{
strv_append (lines, "Unbound actions");
help_tab_unbound (lines, bound);
strv_append (lines, "");
}
struct tab *super = &g_help_tab.super;
tab_init (super, "Help");
super->on_action = help_tab_on_action;
super->on_item_draw = help_tab_on_item_draw;
super->item_count = lines->len;
return super;
}
// --- Debug tab ---------------------------------------------------------------
struct debug_item
{
char *text; ///< Logged line
int64_t timestamp; ///< Timestamp
chtype attrs; ///< Line attributes
};
static struct
{
struct tab super; ///< Parent class
ARRAY (struct debug_item, items) ///< Items
bool active; ///< The tab is present
}
g_debug_tab;
static void
debug_tab_on_item_draw (size_t item_index, struct row_buffer *buffer, int width)
{
hard_assert (item_index < g_debug_tab.items_len);
struct debug_item *item = &g_debug_tab.items[item_index];
char buf[16];
struct tm tm;
time_t when = item->timestamp / 1000;
strftime (buf, sizeof buf, "%T", localtime_r (&when, &tm));
char *prefix = xstrdup_printf
("%s.%03d", buf, (int) (item->timestamp % 1000));
row_buffer_append (buffer, prefix, 0);
free (prefix);
row_buffer_append (buffer, " ", item->attrs);
row_buffer_append (buffer, item->text, item->attrs);
// We override the formatting including colors -- do it for the whole line
row_buffer_align (buffer, width, item->attrs);
}
static void
debug_tab_push (char *message, chtype attrs)
{
ARRAY_RESERVE (g_debug_tab.items, 1);
struct debug_item *item = &g_debug_tab.items[g_debug_tab.items_len++];
g_debug_tab.super.item_count = g_debug_tab.items_len;
item->text = message;
item->attrs = attrs;
item->timestamp = clock_msec (CLOCK_REALTIME);
app_invalidate ();
}
static struct tab *
debug_tab_init (void)
{
ARRAY_INIT (g_debug_tab.items);
g_debug_tab.active = true;
struct tab *super = &g_debug_tab.super;
tab_init (super, "Debug");
super->on_item_draw = debug_tab_on_item_draw;
return super;
}
// --- MPD interface -----------------------------------------------------------
static void
mpd_read_time (const char *value, int *sec, int *optional_msec)
{
if (!value)
return;
char *end, *period = strchr (value, '.');
if (optional_msec && period)
{
unsigned long n = strtoul (period + 1, &end, 10);
if (*end)
return;
*optional_msec = MIN (INT_MAX, n);
}
unsigned long n = strtoul (value, &end, 10);
if (end == period || !*end)
*sec = MIN (INT_MAX, n);
}
static void
mpd_update_playlist_time (void)
{
g.playlist_time = 0;
// It would also be possible to retrieve this from "stats" -> "playtime"
unsigned long n;
for (size_t i = 0; i < g.playlist.len; i++)
{
compact_map_t map = item_list_get (&g.playlist, i);
const char *time = compact_map_find (map, "time");
if (time && xstrtoul (&n, time, 10))
g.playlist_time += n;
}
}
static void
mpd_update_playback_state (void)
{
struct str_map *map = &g.playback_info;
g.song_elapsed = g.song_duration = g.volume = g.song = -1;
uint32_t last_playlist_version = g.playlist_version;
g.playlist_version = 0;
const char *state;
g.state = PLAYER_STOPPED;
if ((state = str_map_find (map, "state")))
{
if (!strcmp (state, "play")) g.state = PLAYER_PLAYING;
if (!strcmp (state, "pause")) g.state = PLAYER_PAUSED;
}
// Values in "time" are always rounded. "elapsed", introduced in MPD 0.16,
// is in millisecond precision and "duration" as well, starting with 0.20.
// Prefer the more precise values but use what we have.
const char *time = str_map_find (map, "time");
const char *elapsed = str_map_find (map, "elapsed");
const char *duration = str_map_find (map, "duration");
struct strv fields = strv_make ();
if (time)
{
cstr_split (time, ":", false, &fields);
if (fields.len >= 1 && !elapsed) elapsed = fields.vector[0];
if (fields.len >= 2 && !duration) duration = fields.vector[1];
}
int msec_past_second = 0;
mpd_read_time (elapsed, &g.song_elapsed, &msec_past_second);
mpd_read_time (duration, &g.song_duration, NULL);
strv_free (&fields);
// We could also just poll the server each half a second but let's not
poller_timer_reset (&g.elapsed_event);
if (g.state == PLAYER_PLAYING)
{
poller_timer_set (&g.elapsed_event, 1000 - msec_past_second);
g.elapsed_since = clock_msec (CLOCK_BEST) - msec_past_second;
}
// The server sends -1 when nothing is being played right now
unsigned long n;
if (xstrtoul_map (map, "volume", &n)) g.volume = n;
if (xstrtoul_map (map, "playlist", &n)) g.playlist_version = n;
if (xstrtoul_map (map, "song", &n)) g.song = n;
if (g.playlist_version != last_playlist_version)
mpd_update_playlist_time ();
app_invalidate ();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
mpd_process_info_data (const struct strv *data)
{
struct str_map *map = &g.playback_info;
// First there's the status, followed by playlist items chunked by "file"
unsigned long n; char *key, *value;
for (size_t i = 0; i < data->len - 1 && data->vector[i]; i++)
{
if (!(key = mpd_parse_kv (data->vector[i], &value)))
continue;
if (!strcasecmp_ascii (key, "playlistlength")
&& xstrtoul (&n, value, 10))
item_list_resize (&g.playlist, n);
str_map_set (map, key, xstrdup (value));
}
// It's much better to process the playlist from the back
struct str_map item = str_map_make (NULL);
item.key_xfrm = tolower_ascii_strxfrm;
for (size_t i = data->len - 1; i-- && data->vector[i]; )
{
if (!(key = mpd_parse_kv (data->vector[i], &value)))
continue;
str_map_set (&item, key, value);
if (!strcasecmp_ascii (key, "file"))
{
if (xstrtoul_map (&item, "pos", &n))
item_list_set (&g.playlist, n, &item);
str_map_clear (&item);
}
}
str_map_free (&item);
}
/// Find a song by its id in the current playlist. Expensive, rarely called.
static ssize_t
mpd_find_pos_of_id (const char *desired_id)
{
compact_map_t map;
const char *id;
for (size_t i = 0; i < g.playlist.len; i++)
{
if ((map = item_list_get (&g.playlist, i))
&& (id = compact_map_find (map, "id"))
&& !strcmp (id, desired_id))
return i;
}
return -1;
}
static char *
mpd_id_of_pos (int pos)
{
compact_map_t map = item_list_get (&g.playlist, pos);
return map ? compact_map_find (map, "id") : NULL;
}
static void
mpd_process_info (const struct strv *data)
{
int *selected = &g_current_tab.item_selected;
int *marked = &g_current_tab.item_mark;
char *prev_sel_id = mpd_id_of_pos (*selected);
char *prev_mark_id = mpd_id_of_pos (*marked);
if (prev_sel_id) prev_sel_id = xstrdup (prev_sel_id);
if (prev_mark_id) prev_mark_id = xstrdup (prev_mark_id);
mpd_process_info_data (data);
const char *sel_id = mpd_id_of_pos (*selected);
const char *mark_id = mpd_id_of_pos (*marked);
if (prev_mark_id && (!mark_id || strcmp (prev_mark_id, mark_id)))
*marked = mpd_find_pos_of_id (prev_mark_id);
if (prev_sel_id && (!sel_id || strcmp (prev_sel_id, sel_id)))
{
if ((*selected = mpd_find_pos_of_id (prev_sel_id)) < 0)
*marked = -1;
app_move_selection (0);
}
free (prev_sel_id);
free (prev_mark_id);
}
static void
mpd_on_info_response (const struct mpd_response *response,
const struct strv *data, void *user_data)
{
(void) user_data;
// TODO: preset an error player state?
str_map_clear (&g.playback_info);
if (!response->success)
print_error ("%s: %s",
"MPD status retrieval failed", response->message_text);
else if (!data->len)
print_debug ("empty MPD status response");
else
mpd_process_info (data);
mpd_update_playback_state ();
current_tab_update ();
info_tab_update ();
}
static void
mpd_on_tick (void *user_data)
{
(void) user_data;
int64_t diff_msec = clock_msec (CLOCK_BEST) - g.elapsed_since;
int elapsed_sec = diff_msec / 1000;
int elapsed_msec = diff_msec % 1000;
g.song_elapsed += elapsed_sec;
g.elapsed_since += elapsed_sec * 1000;
poller_timer_set (&g.elapsed_event, 1000 - elapsed_msec);
app_invalidate ();
}
static void
mpd_request_info (void)
{
struct mpd_client *c = &g.client;
mpd_client_list_ok_begin (c);
mpd_client_send_command (c, "status", NULL);
char *last_version = xstrdup_printf ("%" PRIu32, g.playlist_version);
mpd_client_send_command (c, "plchanges", last_version, NULL);
free (last_version);
mpd_client_list_end (c);
mpd_client_add_task (c, mpd_on_info_response, NULL);
mpd_client_idle (c, 0);
}
static void
mpd_on_events (unsigned subsystems, void *user_data)
{
(void) user_data;
struct mpd_client *c = &g.client;
if (subsystems & MPD_SUBSYSTEM_DATABASE)
library_tab_reload (NULL);
if (subsystems & (MPD_SUBSYSTEM_PLAYER | MPD_SUBSYSTEM_OPTIONS
| MPD_SUBSYSTEM_PLAYLIST | MPD_SUBSYSTEM_MIXER | MPD_SUBSYSTEM_UPDATE))
mpd_request_info ();
else
mpd_client_idle (c, 0);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
mpd_queue_reconnect (void)
{
poller_timer_set (&g.connect_event, 5 * 1000);
}
static void
mpd_on_password_response (const struct mpd_response *response,
const struct strv *data, void *user_data)
{
(void) data;
(void) user_data;
struct mpd_client *c = &g.client;
if (response->success)
{
mpd_request_info ();
library_tab_reload (NULL);
}
else
{
print_error ("%s: %s",
"MPD authentication failed", response->message_text);
mpd_client_send_command (c, "close", NULL);
}
}
static void
mpd_on_connected (void *user_data)
{
(void) user_data;
struct mpd_client *c = &g.client;
const char *password =
get_config_string (g.config.root, "settings.password");
if (password)
{
mpd_client_send_command (c, "password", password, NULL);
mpd_client_add_task (c, mpd_on_password_response, NULL);
}
else
{
mpd_request_info ();
library_tab_reload (NULL);
}
}
static void
mpd_on_failure (void *user_data)
{
(void) user_data;
// This is also triggered both by a failed connect and a clean disconnect
print_debug ("connection to MPD failed");
mpd_queue_reconnect ();
str_map_clear (&g.playback_info);
item_list_resize (&g.playlist, 0);
mpd_update_playback_state ();
current_tab_update ();
info_tab_update ();
}
static void
mpd_on_io_hook (void *user_data, bool outgoing, const char *line)
{
(void) user_data;
if (outgoing)
debug_tab_push (xstrdup_printf ("<< %s", line), APP_ATTR (OUTGOING));
else
debug_tab_push (xstrdup_printf (">> %s", line), APP_ATTR (INCOMING));
}
static void
app_on_reconnect (void *user_data)
{
(void) user_data;
struct mpd_client *c = &g.client;
c->on_failure = mpd_on_failure;
c->on_connected = mpd_on_connected;
c->on_event = mpd_on_events;
if (g_debug_mode)
c->on_io_hook = mpd_on_io_hook;
// We accept hostname/IPv4/IPv6 in pseudo-URL format, as well as sockets
char *address = xstrdup (get_config_string (g.config.root,
"settings.address")), *p = address, *host = address, *port = "6600";
// Unwrap IPv6 addresses in format_host_port_pair() format
char *right_bracket = strchr (p, ']');
if (p[0] == '[' && right_bracket)
{
*right_bracket = '\0';
host = p + 1;
p = right_bracket + 1;
}
char *colon = strchr (p, ':');
if (colon)
{
*colon = '\0';
port = colon + 1;
}
struct error *e = NULL;
if (!mpd_client_connect (c, host, port, &e))
{
print_error ("%s: %s", "cannot connect to MPD", e->message);
error_free (e);
mpd_queue_reconnect ();
}
free (address);
}
// --- Signals -----------------------------------------------------------------
static int g_signal_pipe[2]; ///< A pipe used to signal... signals
/// Program termination has been requested by a signal
static volatile sig_atomic_t g_termination_requested;
/// The window has changed in size
static volatile sig_atomic_t g_winch_received;
static void
signals_postpone_handling (char id)
{
int original_errno = errno;
if (write (g_signal_pipe[1], &id, 1) == -1)
soft_assert (errno == EAGAIN);
errno = original_errno;
}
static void
signals_superhandler (int signum)
{
switch (signum)
{
case SIGWINCH:
g_winch_received = true;
signals_postpone_handling ('w');
break;
case SIGINT:
case SIGTERM:
g_termination_requested = true;
signals_postpone_handling ('t');
break;
default:
hard_assert (!"unhandled signal");
}
}
static void
signals_setup_handlers (void)
{
if (pipe (g_signal_pipe) == -1)
exit_fatal ("%s: %s", "pipe", strerror (errno));
set_cloexec (g_signal_pipe[0]);
set_cloexec (g_signal_pipe[1]);
// So that the pipe cannot overflow; it would make write() block within
// the signal handler, which is something we really don't want to happen.
// The same holds true for read().
set_blocking (g_signal_pipe[0], false);
set_blocking (g_signal_pipe[1], false);
signal (SIGPIPE, SIG_IGN);
struct sigaction sa;
sa.sa_flags = SA_RESTART;
sa.sa_handler = signals_superhandler;
sigemptyset (&sa.sa_mask);
if (sigaction (SIGWINCH, &sa, NULL) == -1
|| sigaction (SIGINT, &sa, NULL) == -1
|| sigaction (SIGTERM, &sa, NULL) == -1)
exit_fatal ("sigaction: %s", strerror (errno));
}
// --- Initialisation, event handling ------------------------------------------
static void
app_on_tty_event (termo_key_t *event, int64_t event_ts)
{
// Simple double click detection via release--press delay, only a bit
// complicated by the fact that we don't know what's being released
static termo_key_t last_event;
static int64_t last_event_ts;
static int last_button;
int y, x, button, y_last, x_last;
termo_mouse_event_t type, type_last;
if (termo_interpret_mouse (g.tk, event, &type, &button, &y, &x))
{
bool double_click = termo_interpret_mouse
(g.tk, &last_event, &type_last, NULL, &y_last, &x_last)
&& event_ts - last_event_ts < 500
&& type_last == TERMO_MOUSE_RELEASE && type == TERMO_MOUSE_PRESS
&& y_last == y && x_last == x && last_button == button;
if (!app_process_mouse (type, y, x, button, double_click))
beep ();
// Prevent interpreting triple clicks as two double clicks
if (double_click)
last_button = 0;
else if (type == TERMO_MOUSE_PRESS)
last_button = button;
}
else if (!app_process_termo_event (event))
beep ();
last_event = *event;
last_event_ts = event_ts;
}
static void
app_on_tty_readable (const struct pollfd *fd, void *user_data)
{
(void) user_data;
if (fd->revents & ~(POLLIN | POLLHUP | POLLERR))
print_debug ("fd %d: unexpected revents: %d", fd->fd, fd->revents);
poller_timer_reset (&g.tk_timer);
termo_advisereadable (g.tk);
termo_key_t event;
int64_t event_ts = clock_msec (CLOCK_BEST);
termo_result_t res;
while ((res = termo_getkey (g.tk, &event)) == TERMO_RES_KEY)
app_on_tty_event (&event, event_ts);
if (res == TERMO_RES_AGAIN)
poller_timer_set (&g.tk_timer, termo_get_waittime (g.tk));
else if (res == TERMO_RES_ERROR || res == TERMO_RES_EOF)
app_quit ();
}
static void
app_on_key_timer (void *user_data)
{
(void) user_data;
termo_key_t event;
if (termo_getkey_force (g.tk, &event) == TERMO_RES_KEY)
if (!app_process_termo_event (&event))
beep ();
}
static void
app_on_signal_pipe_readable (const struct pollfd *fd, void *user_data)
{
(void) user_data;
char id = 0;
(void) read (fd->fd, &id, 1);
if (g_termination_requested && !g.quitting)
app_quit ();
if (g_winch_received)
{
g_winch_received = false;
update_curses_terminal_size ();
app_invalidate ();
}
}
static void
app_on_message_timer (void *user_data)
{
(void) user_data;
free (g.message);
g.message = NULL;
app_invalidate ();
}
static void
app_log_handler (void *user_data, const char *quote, const char *fmt,
va_list ap)
{
// We certainly don't want to end up in a possibly infinite recursion
static bool in_processing;
if (in_processing)
return;
in_processing = true;
struct str message = str_make ();
str_append (&message, quote);
str_append_vprintf (&message, fmt, ap);
// If the standard error output isn't redirected, try our best at showing
// the message to the user
if (!isatty (STDERR_FILENO))
fprintf (stderr, "%s\n", message.str);
else if (g_debug_tab.active)
debug_tab_push (str_steal (&message),
user_data == NULL ? 0 : g.attrs[(intptr_t) user_data].attrs);
else
{
free (g.message);
g.message = xstrdup (message.str);
app_invalidate ();
poller_timer_set (&g.message_timer, 5000);
}
str_free (&message);
in_processing = false;
}
static void
app_init_poller_events (void)
{
g.signal_event = poller_fd_make (&g.poller, g_signal_pipe[0]);
g.signal_event.dispatcher = app_on_signal_pipe_readable;
poller_fd_set (&g.signal_event, POLLIN);
g.tty_event = poller_fd_make (&g.poller, STDIN_FILENO);
g.tty_event.dispatcher = app_on_tty_readable;
poller_fd_set (&g.tty_event, POLLIN);
g.message_timer = poller_timer_make (&g.poller);
g.message_timer.dispatcher = app_on_message_timer;
g.tk_timer = poller_timer_make (&g.poller);
g.tk_timer.dispatcher = app_on_key_timer;
g.connect_event = poller_timer_make (&g.poller);
g.connect_event.dispatcher = app_on_reconnect;
poller_timer_set (&g.connect_event, 0);
g.elapsed_event = poller_timer_make (&g.poller);
g.elapsed_event.dispatcher = mpd_on_tick;
g.refresh_event = poller_idle_make (&g.poller);
g.refresh_event.dispatcher = app_on_refresh;
}
int
main (int argc, char *argv[])
{
static const struct opt opts[] =
{
{ 'd', "debug", NULL, 0, "run in debug mode" },
{ 'h', "help", NULL, 0, "display this help and exit" },
{ 'V', "version", NULL, 0, "output version information and exit" },
{ 0, NULL, NULL, 0, NULL }
};
struct opt_handler oh =
opt_handler_make (argc, argv, opts, NULL, "MPD client.");
int c;
while ((c = opt_handler_get (&oh)) != -1)
switch (c)
{
case 'd':
g_debug_mode = true;
break;
case 'h':
opt_handler_usage (&oh, stdout);
exit (EXIT_SUCCESS);
case 'V':
printf (PROGRAM_NAME " " PROGRAM_VERSION "\n");
exit (EXIT_SUCCESS);
default:
print_error ("wrong options");
opt_handler_usage (&oh, stderr);
exit (EXIT_FAILURE);
}
argc -= optind;
argv += optind;
if (argc)
{
opt_handler_usage (&oh, stderr);
exit (EXIT_FAILURE);
}
opt_handler_free (&oh);
// We only need to convert to and from the terminal encoding
if (!setlocale (LC_CTYPE, ""))
print_warning ("failed to set the locale");
app_init_context ();
app_load_configuration ();
app_init_terminal ();
signals_setup_handlers ();
app_init_poller_events ();
g_normal_keys = app_init_bindings ("normal",
g_normal_defaults, N_ELEMENTS (g_normal_defaults), &g_normal_keys_len);
g_editor_keys = app_init_bindings ("editor",
g_editor_defaults, N_ELEMENTS (g_editor_defaults), &g_editor_keys_len);
if (g_debug_mode)
app_prepend_tab (debug_tab_init ());
// Redirect all messages from liberty to a special tab so they're not lost
g_log_message_real = app_log_handler;
app_prepend_tab (info_tab_init ());
if (g.streams.len)
app_prepend_tab (streams_tab_init ());
app_prepend_tab (library_tab_init ());
app_prepend_tab (current_tab_init ());
app_switch_tab ((g.help_tab = help_tab_init ()));
g.polling = true;
while (g.polling)
poller_run (&g.poller);
endwin ();
g_log_message_real = log_message_stdio;
app_free_context ();
return 0;
}