degesch: prepare for user/channel buffers
That is, prepare all the required data structures and their relations. I'm not particularly good at this, so let's just hope it will work out.
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8c38b1b9b8
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5502975505
221
degesch.c
221
degesch.c
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@ -91,7 +91,7 @@ static struct config_item g_config_table[] =
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// --- Application data --------------------------------------------------------
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// All text stored in our data structures is encoded in UTF-8.
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// Or at least should be.
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// Or at least should be. The exception is IRC identifiers.
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/// Shorthand to set an error and return failure from the function
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#define FAIL(...) \
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@ -100,27 +100,163 @@ static struct config_item g_config_table[] =
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return false; \
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BLOCK_END
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static void user_unref (void *p);
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static void channel_unref (void *p);
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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struct nick_info
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struct user_channel
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{
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char *nickname; ///< Literal nickname
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char mode_char; ///< Op/voice/... character
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bool away; ///< User is away
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LIST_HEADER (struct user_channel)
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// XXX: maybe a good candidate for deduplication (away status)
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struct channel *channel; ///< Reference to channel
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};
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static void
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nick_info_destroy (void *p)
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static struct user_channel *
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user_channel_new (void)
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{
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struct nick_info *self = p;
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free (self->nickname);
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struct user_channel *self = xcalloc (1, sizeof *self);
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return self;
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}
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static void
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user_channel_destroy (void *p)
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{
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struct user_channel *self = p;
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channel_unref (self->channel);
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free (self);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// We keep references to user information in channels and buffers,
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// as well as in the name lookup table.
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struct user
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{
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size_t ref_count; ///< Reference count
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// TODO: eventually a reference to the server
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char *nickname; ///< Literal nickname
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// TODO: write code to poll for the away status
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bool away; ///< User is away
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struct user_channel *channels; ///< Channels the user is on
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};
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static struct user *
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user_new (void)
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{
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struct user *self = xcalloc (1, sizeof *self);
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self->ref_count = 1;
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return self;
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}
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static void
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user_destroy (struct user *self)
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{
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free (self->nickname);
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LIST_FOR_EACH (struct user_channel, iter, self->channels)
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user_channel_destroy (iter);
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free (self);
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}
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static struct user *
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user_ref (struct user *self)
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{
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self->ref_count++;
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return self;
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}
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static void
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user_unref (void *p)
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{
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struct user *self = p;
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if (!--self->ref_count)
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user_destroy (self);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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struct channel_user
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{
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LIST_HEADER (struct channel_user)
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struct user *user; ///< Reference to user
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char mode_char; ///< Op/voice/... character, or zero
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};
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static struct channel_user *
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channel_user_new (void)
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{
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struct channel_user *self = xcalloc (1, sizeof *self);
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return self;
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}
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static void
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channel_user_destroy (void *p)
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{
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struct channel_user *self = p;
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user_unref (self->user);
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free (self);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// We keep references to channels in their users and buffers,
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// as well as in the name lookup table.
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struct channel
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{
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size_t ref_count; ///< Reference count
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// TODO: eventually a reference to the server
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char *name; ///< Channel name
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char *mode; ///< Channel mode
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char *topic; ///< Channel topic
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struct channel_user *users; ///< Channel users
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};
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static struct channel *
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channel_new (void)
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{
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struct channel *self = xcalloc (1, sizeof *self);
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self->ref_count = 1;
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return self;
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}
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static void
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channel_destroy (void *p)
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{
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struct channel *self = p;
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free (self->name);
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free (self->mode);
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free (self->topic);
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LIST_FOR_EACH (struct channel_user, iter, self->users)
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channel_user_destroy (iter);
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free (self);
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}
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static struct channel *
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channel_ref (struct channel *self)
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{
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self->ref_count++;
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return self;
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}
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static void
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channel_unref (void *p)
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{
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struct channel *self = p;
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if (!--self->ref_count)
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channel_destroy (self);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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enum buffer_line_flags
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{
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BUFFER_LINE_HIGHLIGHT = 1 << 0 ///< The user was highlighted by this
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@ -202,20 +338,18 @@ struct buffer
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unsigned unseen_messages_count; ///< # messages since last visited
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// Channel information:
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// Origin information:
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char *mode; ///< Channel mode
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char *topic; ///< Channel topic
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struct str_map nicks; ///< Maps nicks to "nick_info"
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struct user *user; ///< Reference to user
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struct channel *channel; ///< Reference to channel
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// TODO: eventually a reference to the server for server buffers
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};
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static struct buffer *
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buffer_new (void)
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{
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struct buffer *self = xcalloc (1, sizeof *self);
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str_map_init (&self->nicks);
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self->nicks.key_xfrm = irc_strxfrm;
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self->nicks.free = nick_info_destroy;
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return self;
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}
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@ -225,9 +359,12 @@ buffer_destroy (struct buffer *self)
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free (self->name);
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// Can't really free "history" here
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free (self->saved_line);
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free (self->mode);
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free (self->topic);
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str_map_free (&self->nicks);
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LIST_FOR_EACH (struct buffer_line, iter, self->lines)
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buffer_line_destroy (iter);
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if (self->user)
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user_unref (self->user);
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if (self->channel)
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channel_unref (self->channel);
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free (self);
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}
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@ -260,7 +397,23 @@ struct app_context
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SSL_CTX *ssl_ctx; ///< SSL context
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SSL *ssl; ///< SSL connection
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// TODO: channels?
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// TODO: an output queue to prevent excess floods (this will be needed
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// especially for away status polling)
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// XXX: there can be buffers for non-existent users
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// TODO: user buffers rename on nick changes
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// TODO: move entries in "irc_buffer_map" and "irc_users" when that happens
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// TODO: user buffers may merge when an existing user renames to match
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// the name of a buffer for a non-existent user
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// TODO: initialize key_strxfrm according to server properties;
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// note that collisions may arise on reconnecting
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// TODO: when disconnected, get rid of all users everywhere;
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// maybe also broadcast all buffers about the disconnection event
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// TODO: when getting connected again, rejoin all current channels
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struct str_map irc_users; ///< IRC user data
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struct str_map irc_channels; ///< IRC channel data
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struct str_map irc_buffer_map; ///< Maps IRC identifiers to buffers
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// TODO: initialize and update these two values
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// TODO: probably issue a USERHOST message for ourselves after connecting
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@ -288,6 +441,7 @@ struct app_context
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struct buffer *buffers_tail; ///< The tail of our buffers
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// XXX: when we go multiserver, there will be collisions
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// TODO: make buffer names unique like weechat does
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struct str_map buffers_by_name; ///< Excludes GLOBAL and SERVER
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struct buffer *global_buffer; ///< The global buffer
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@ -328,13 +482,22 @@ app_context_init (struct app_context *self)
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str_init (&self->read_buffer);
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self->irc_ready = false;
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str_map_init (&self->irc_users);
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self->irc_users.free = user_unref;
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self->irc_users.key_xfrm = irc_strxfrm;
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str_map_init (&self->irc_channels);
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self->irc_channels.free = channel_unref;
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self->irc_channels.key_xfrm = irc_strxfrm;
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str_map_init (&self->irc_buffer_map);
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self->irc_buffer_map.key_xfrm = irc_strxfrm;
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poller_init (&self->poller);
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str_map_init (&self->buffers_by_name);
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self->buffers_by_name.key_xfrm = irc_strxfrm;
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self->last_displayed_msg_time = time (NULL);
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poller_init (&self->poller);
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char *encoding = nl_langinfo (CODESET);
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#ifdef __linux__
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encoding = xstrdup_printf ("%s//TRANSLIT", encoding);
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@ -370,15 +533,19 @@ app_context_free (struct app_context *self)
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if (self->ssl_ctx)
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SSL_CTX_free (self->ssl_ctx);
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str_map_free (&self->irc_users);
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str_map_free (&self->irc_channels);
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str_map_free (&self->irc_buffer_map);
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free (self->irc_nickname);
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free (self->irc_user_mode);
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poller_free (&self->poller);
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LIST_FOR_EACH (struct buffer, iter, self->buffers)
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buffer_destroy (iter);
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str_map_free (&self->buffers_by_name);
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poller_free (&self->poller);
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iconv_close (self->latin1_to_utf8);
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iconv_close (self->term_from_utf8);
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iconv_close (self->term_to_utf8);
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@ -1373,8 +1540,8 @@ make_prompt (struct app_context *ctx, struct str *output)
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str_append_printf (output, "%d:%s",
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buffer_get_index (ctx, buffer), buffer->name);
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if (buffer->type == BUFFER_CHANNEL && *buffer->mode)
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str_append_printf (output, "(%s)", buffer->mode);
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if (buffer->type == BUFFER_CHANNEL && *buffer->channel->mode)
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str_append_printf (output, "(%s)", buffer->channel->mode);
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if (buffer != ctx->global_buffer)
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{
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