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/* vim:set et ts=4 sts=4:
*
* ibus-pinyin - The Chinese PinYin engine for IBus
*
* Copyright (c) 2011 Peng Wu <alexepico@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "PYLibPinyin.h"
#include <pinyin.h>
#include "PYPConfig.h"
#define LIBPINYIN_SAVE_TIMEOUT (5 * 60)
using namespace PY;
std::unique_ptr<LibPinyinBackEnd> LibPinyinBackEnd::m_instance;
static LibPinyinBackEnd libpinyin_backend;
LibPinyinBackEnd::LibPinyinBackEnd () {
m_timeout_id = 0;
m_timer = g_timer_new();
m_pinyin_context = NULL;
m_chewing_context = NULL;
}
LibPinyinBackEnd::~LibPinyinBackEnd () {
g_timer_destroy (m_timer);
if (m_timeout_id != 0) {
saveUserDB ();
g_source_remove (m_timeout_id);
}
if (m_pinyin_context)
pinyin_fini(m_pinyin_context);
m_pinyin_context = NULL;
if (m_chewing_context)
pinyin_fini(m_chewing_context);
m_chewing_context = NULL;
}
pinyin_instance_t *
LibPinyinBackEnd::allocPinyinInstance ()
{
if (NULL == m_pinyin_context) {
gchar * userdir = g_build_filename (g_get_home_dir(), ".cache",
"ibus", "libpinyin", NULL);
int retval = g_mkdir_with_parents (userdir, 0700);
if (retval) {
g_free(userdir); userdir = NULL;
}
m_pinyin_context = pinyin_init ("/usr/share/libpinyin/data", userdir);
g_free(userdir);
}
setPinyinOptions (&LibPinyinPinyinConfig::instance ());
return pinyin_alloc_instance (m_pinyin_context);
}
void
LibPinyinBackEnd::freePinyinInstance (pinyin_instance_t *instance)
{
pinyin_free_instance (instance);
}
pinyin_instance_t *
LibPinyinBackEnd::allocChewingInstance ()
{
if (NULL == m_chewing_context) {
gchar * userdir = g_build_filename (g_get_home_dir(), ".cache",
"ibus", "libbopomofo", NULL);
int retval = g_mkdir_with_parents (userdir, 0700);
if (retval) {
g_free(userdir); userdir = NULL;
}
m_chewing_context = pinyin_init ("/usr/share/libpinyin/data", NULL);
g_free(userdir);
}
setChewingOptions (&LibPinyinBopomofoConfig::instance ());
return pinyin_alloc_instance (m_chewing_context);
}
void
LibPinyinBackEnd::freeChewingInstance (pinyin_instance_t *instance)
{
pinyin_free_instance (instance);
}
void
LibPinyinBackEnd::init (void) {
g_assert (NULL == m_instance.get ());
LibPinyinBackEnd * backend = new LibPinyinBackEnd;
m_instance.reset (backend);
}
void
LibPinyinBackEnd::finalize (void) {
m_instance.reset ();
}
/* Here are the double pinyin keyboard scheme mapping table. */
static const struct{
gint double_pinyin_keyboard;
DoublePinyinScheme scheme;
} double_pinyin_options [] = {
{0, DOUBLE_PINYIN_MS},
{1, DOUBLE_PINYIN_ZRM},
{2, DOUBLE_PINYIN_ABC},
{3, DOUBLE_PINYIN_ZIGUANG},
{4, DOUBLE_PINYIN_PYJJ},
{5, DOUBLE_PINYIN_XHE}
};
gboolean
LibPinyinBackEnd::setPinyinOptions (Config *config)
{
if (NULL == m_pinyin_context)
return FALSE;
const gint map = config->doublePinyinSchema ();
for (guint i = 0; i < G_N_ELEMENTS (double_pinyin_options); i++) {
if (map == double_pinyin_options[i].double_pinyin_keyboard) {
/* set double pinyin scheme. */
DoublePinyinScheme scheme = double_pinyin_options[i].scheme;
pinyin_set_double_pinyin_scheme (m_pinyin_context, scheme);
}
}
pinyin_set_options (m_pinyin_context, config->option());
return TRUE;
}
/* Here are the chewing keyboard scheme mapping table. */
static const struct {
gint bopomofo_keyboard;
ChewingScheme scheme;
} chewing_options [] = {
{0, CHEWING_STANDARD},
{1, CHEWING_GINYIEH},
{2, CHEWING_ETEN},
{3, CHEWING_IBM}
};
gboolean
LibPinyinBackEnd::setChewingOptions (Config *config)
{
if (NULL == m_chewing_context)
return FALSE;
const gint map = config->bopomofoKeyboardMapping ();
for (guint i = 0; i < G_N_ELEMENTS (chewing_options); i++) {
if (map == chewing_options[i].bopomofo_keyboard) {
/* TODO: set chewing scheme. */
ChewingScheme scheme = chewing_options[i].scheme;
pinyin_set_chewing_scheme (m_chewing_context, scheme);
}
}
pinyin_set_options(m_chewing_context, config->option());
return TRUE;
}
void
LibPinyinBackEnd::modified (void)
{
/* Restart the timer */
g_timer_start (m_timer);
if (m_timeout_id != 0)
return;
m_timeout_id = g_timeout_add_seconds (LIBPINYIN_SAVE_TIMEOUT,
LibPinyinBackEnd::timeoutCallback,
static_cast<gpointer> (this));
}
gboolean
LibPinyinBackEnd::timeoutCallback (gpointer data)
{
LibPinyinBackEnd *self = static_cast<LibPinyinBackEnd *> (data);
/* Get the elapsed time since last modification of database. */
guint elapsed = (guint)g_timer_elapsed (self->m_timer, NULL);
if (elapsed >= LIBPINYIN_SAVE_TIMEOUT &&
self->saveUserDB ()) {
self->m_timeout_id = 0;
return FALSE;
}
return TRUE;
}
gboolean
LibPinyinBackEnd::saveUserDB (void)
{
if (m_pinyin_context)
pinyin_save (m_pinyin_context);
if (m_chewing_context)
pinyin_save (m_chewing_context);
return TRUE;
}
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