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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* Copyright (C) 2005 Takuro Ashie
* Copyright (C) 2012 CSSlayer
*
* 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, 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "reading.h"
#include "factory.h"
#include "imengine.h"
#include "utils.h"
ReadingSegment::ReadingSegment ()
{
}
ReadingSegment::~ReadingSegment ()
{
}
static const char *
find_romaji (std::string c)
{
ConvRule *table = fcitx_anthy_romaji_typing_rule;
for (unsigned int i = 0; table[i].string; i++) {
std::string kana = table[i].result;
if (c == kana)
return table[i].string;
}
return "";
}
static void
to_half (std::string &dest, std::string &src)
{
WideRule *table = fcitx_anthy_wide_table;
for (unsigned int i = 0; i < util_utf8_string_length(src); i++) {
bool found = false;
std::string kana1 = util_utf8_string_substr(src, i, 1);
for (unsigned int i = 0; table[i].code; i++) {
std::string kana2 = table[i].wide;
if (kana1 == kana2) {
dest += table[i].code;
found = true;
break;
}
}
if (!found)
dest += kana1;
}
}
// Only a romaji string can be splited with raw key string.
// Other typing method aren't supported splitting raw key string.
void
ReadingSegment::split (ReadingSegments &segments)
{
if (util_utf8_string_length(kana) <= 1)
segments.push_back (*this);
std::string half;
to_half (half, kana);
bool same_with_raw = half == raw;
std::string::iterator it;
for (unsigned int i = 0; i < util_utf8_string_length(kana); i++) {
std::string c = util_utf8_string_substr(kana, i, 1);
ReadingSegment seg;
seg.kana = c;
if (same_with_raw)
to_half (seg.raw, c);
else
seg.raw = find_romaji (c);
segments.push_back (seg);
}
}
Reading::Reading (AnthyInstance &anthy)
: m_anthy (anthy),
//m_key2kana_tables (tables),
m_key2kana_normal (anthy, m_key2kana_tables),
m_kana (anthy),
m_nicola (anthy, m_nicola_tables),
m_key2kana (&m_key2kana_normal),
m_segment_pos (0),
m_caret_offset (0)
{
m_nicola_tables.set_typing_method (FCITX_ANTHY_TYPING_METHOD_NICOLA);
}
Reading::~Reading ()
{
}
bool
Reading::can_process_key_event (const KeyEvent & key)
{
if (m_kana.can_append (key))
return true;
return m_key2kana->can_append (key);
}
bool
Reading::process_key_event (const KeyEvent & key)
{
if (!can_process_key_event (key))
return false;
if (m_caret_offset != 0) {
split_segment (m_segment_pos);
reset_pending ();
}
bool was_pending;
if (m_kana.can_append (key))
was_pending = m_kana.is_pending ();
else
was_pending = m_key2kana->is_pending ();
std::string raw;
std::string result, pending;
bool need_commiting;
if (m_kana.can_append (key))
need_commiting = m_kana.append (key, result, pending, raw);
else
need_commiting = m_key2kana->append (key, result, pending, raw);
ReadingSegments::iterator begin = m_segments.begin ();
// fix previous segment and prepare next segment if needed
if (!result.empty () || !pending.empty ()) {
if (!was_pending || // previous segment was already fixed
need_commiting) // previous segment has been fixed
{
ReadingSegment c;
m_segments.insert (begin + m_segment_pos, c);
m_segment_pos++;
}
}
// fill segment
if (result.length() > 0 && pending.length () > 0) {
m_segments[m_segment_pos - 1].kana = result;
ReadingSegment c;
c.raw += raw;
c.kana = pending;
m_segments.insert (begin + m_segment_pos, c);
m_segment_pos++;
} else if (result.length () > 0) {
m_segments[m_segment_pos - 1].raw += raw;
m_segments[m_segment_pos - 1].kana = result;
} else if (pending.length () > 0) {
m_segments[m_segment_pos - 1].raw += raw;
m_segments[m_segment_pos - 1].kana = pending;
} else {
}
return false;
}
void
Reading::finish (void)
{
if (!m_key2kana->is_pending ()) return;
std::string result;
result = m_key2kana->flush_pending ();
if (result.length () > 0)
m_segments[m_segment_pos - 1].kana = result;
}
void
Reading::clear (void)
{
m_key2kana_normal.clear ();
m_kana.clear ();
m_nicola.clear ();
m_segments.clear ();
m_segment_pos = 0;
m_caret_offset = 0;
}
std::string
Reading::get_by_char (unsigned int start, int len, StringType type)
{
std::string str;
unsigned int pos = 0, end = len > 0 ? start + len : get_length_by_char () - start;
std::string kana;
std::string raw;
if (start >= end)
return str;
if (start >= get_length_by_char ())
return str;
switch (type) {
case FCITX_ANTHY_STRING_LATIN:
raw = get_raw_by_char (start, len);
str = raw;
return str;
case FCITX_ANTHY_STRING_WIDE_LATIN:
raw = get_raw_by_char (start, len);
util_convert_to_wide (str, raw);
return str;
default:
break;
}
for (unsigned int i = 0; i < m_segments.size (); i++) {
if (pos >= start || pos + util_utf8_string_length(m_segments[i].kana) > start) {
unsigned int startstart = 0, len;
if (pos >= start)
startstart = 0;
else
startstart = pos - start;
if (pos + util_utf8_string_length(m_segments[i].kana) > end)
len = end - start;
else
len = util_utf8_string_length(m_segments[i].kana);
kana += util_utf8_string_substr(m_segments[i].kana, startstart, len);
}
pos += util_utf8_string_length(m_segments[i].kana);
if (pos >= end)
break;
}
switch (type) {
case FCITX_ANTHY_STRING_HIRAGANA:
str = kana;
break;
case FCITX_ANTHY_STRING_KATAKANA:
util_convert_to_katakana (str, kana);
break;
case FCITX_ANTHY_STRING_HALF_KATAKANA:
util_convert_to_katakana (str, kana, true);
break;
default:
break;
}
return str;
}
std::string
Reading::get_raw_by_char (unsigned int start, int len)
{
std::string str;
unsigned int pos = 0, end = len > 0 ? start + len : get_length_by_char () - start;
if (start >= end)
return str;
for (unsigned int i = 0; i < m_segments.size (); i++) {
if (pos >= start || pos + util_utf8_string_length(m_segments[i].kana) > start) {
// FIXME!
str += m_segments[i].raw;
}
pos += util_utf8_string_length(m_segments[i].kana);
if (pos >= end)
break;
}
return str;
}
void
Reading::split_segment (unsigned int seg_id)
{
if (seg_id >= m_segments.size ())
return;
unsigned int pos = 0;
for (unsigned int i = 0; i < seg_id && i < m_segments.size (); i++)
pos += m_segments[i].kana.length ();
unsigned int caret = get_caret_pos ();
unsigned int seg_len = m_segments[seg_id].kana.length ();
bool caret_was_in_the_segment = false;
if (caret > pos && caret < pos + seg_len)
caret_was_in_the_segment = true;
ReadingSegments segments;
m_segments[seg_id].split (segments);
m_segments.erase (m_segments.begin () + seg_id);
for (int j = segments.size () - 1; j >= 0; j--) {
m_segments.insert (m_segments.begin () + seg_id, segments[j]);
if (m_segment_pos > seg_id)
m_segment_pos++;
}
if (caret_was_in_the_segment) {
m_segment_pos += m_caret_offset;
m_caret_offset = 0;
}
}
bool
Reading::append (const KeyEvent & key,
const std::string & string)
{
bool was_pending;
std::string result, pending;
bool need_commiting;
if (!m_kana.can_append (key, true) &&
!m_key2kana->can_append (key, true))
return false;
if (m_caret_offset != 0) {
split_segment (m_segment_pos);
reset_pending ();
}
if (m_kana.can_append (key))
was_pending = m_kana.is_pending ();
else
was_pending = m_key2kana->is_pending ();
if (m_kana.can_append (key))
need_commiting = m_kana.append (string, result, pending);
else
need_commiting = m_key2kana->append (string, result, pending);
ReadingSegments::iterator begin = m_segments.begin ();
// fix previous segment and prepare next segment if needed
if (!result.empty () || !pending.empty ()) {
if (!was_pending || // previous segment was already fixed
need_commiting) // previous segment has been fixed
{
ReadingSegment c;
m_segments.insert (begin + m_segment_pos, c);
m_segment_pos++;
}
}
// fill segment
if (result.length() > 0 && pending.length () > 0) {
m_segments[m_segment_pos - 1].kana = result;
ReadingSegment c;
c.raw += string;
c.kana = pending;
m_segments.insert (begin + m_segment_pos, c);
m_segment_pos++;
} else if (result.length () > 0) {
m_segments[m_segment_pos - 1].raw += string;
m_segments[m_segment_pos - 1].kana = result;
} else if (pending.length () > 0) {
m_segments[m_segment_pos - 1].raw += string;
m_segments[m_segment_pos - 1].kana = pending;
} else {
}
return false;
}
void
Reading::erase (unsigned int start, int len, bool allow_split)
{
if (m_segments.size () <= 0)
return;
if (get_length_by_char () < start)
return;
if (len < 0)
len = get_length_by_char () - start;
// erase
unsigned int pos = 0;
for (int i = 0; i <= (int) m_segments.size (); i++) {
if (pos < start) {
// we have not yet reached start position.
if (i == (int) m_segments.size ())
break;
pos += util_utf8_string_length(m_segments[i].kana);
} else if (pos == start) {
// we have reached start position.
if (i == (int) m_segments.size ())
break;
if (allow_split &&
pos + util_utf8_string_length(m_segments[i].kana) > start + len)
{
// we have overshooted the end position!
// we have to split this segment
split_segment (i);
} else {
// This segment is completely in the rage, erase it!
len -= util_utf8_string_length(m_segments[i].kana);
m_segments.erase (m_segments.begin () + i);
if ((int) m_segment_pos > i)
m_segment_pos--;
}
// retry from the same position
i--;
} else {
// we have overshooted the start position!
if (allow_split) {
pos -= util_utf8_string_length(m_segments[i - 1].kana);
split_segment (i - 1);
// retry from the previous position
i -= 2;
} else {
// we have overshooted the start position, but have not been
// allowed to split the segment.
// So remove all string of previous segment.
len -= pos - start;
pos -= util_utf8_string_length(m_segments[i - 1].kana);
m_segments.erase (m_segments.begin () + i - 1);
if ((int) m_segment_pos > i - 1)
m_segment_pos--;
// retry from the previous position
i -= 2;
}
}
// Now all letters in the range are removed.
// Exit the loop.
if (len <= 0)
break;
}
// reset values
if (m_segments.size () <= 0) {
clear ();
} else {
reset_pending ();
}
}
void
Reading::reset_pending (void)
{
if (m_key2kana->is_pending ())
m_key2kana->clear ();
if (m_kana.is_pending ())
m_kana.clear ();
if (m_segment_pos <= 0)
return;
m_key2kana->reset_pending (m_segments[m_segment_pos - 1].kana,
m_segments[m_segment_pos - 1].raw);
m_kana.reset_pending (m_segments[m_segment_pos - 1].kana,
m_segments[m_segment_pos - 1].raw);
// FIXME! this code breaks pending state on normal input mode.
m_key2kana->reset_pseudo_ascii_mode();
for (unsigned int i = 0; i < m_segment_pos; i++)
m_key2kana->process_pseudo_ascii_mode(m_segments[i].kana);
}
unsigned int
Reading::get_length (void)
{
unsigned int len = 0;
for (unsigned int i = 0; i < m_segments.size (); i++)
len += m_segments[i].kana.length();
return len;
}
unsigned int
Reading::get_length_by_char (void)
{
unsigned int len = 0;
for (unsigned int i = 0; i < m_segments.size (); i++)
len += util_utf8_string_length(m_segments[i].kana);
return len;
}
unsigned int
Reading::get_caret_pos_by_char (void)
{
unsigned int pos = 0;
unsigned int i;
for (i = 0;
i < m_segment_pos && i < m_segments.size ();
i++)
{
pos += util_utf8_string_length(m_segments[i].kana);
}
pos += m_caret_offset;
return pos;
}
unsigned int
Reading::get_caret_pos (void)
{
unsigned int pos = 0;
unsigned int i;
for (i = 0;
i < m_segment_pos && i < m_segments.size ();
i++)
{
pos += m_segments[i].kana.length();
}
if (i < m_segments.size() && m_caret_offset) {
char* temp = strdup(m_segments[i].kana.c_str());
char* nth = fcitx_utf8_get_nth_char(temp, m_caret_offset);
pos += (nth - temp);
free(temp);
}
return pos;
}
// FIXME! add "allow_split" argument.
void
Reading::set_caret_pos_by_char (unsigned int pos)
{
if (pos == get_caret_pos_by_char ())
return;
m_key2kana->clear ();
m_kana.clear ();
if (pos >= get_length_by_char ()) {
m_segment_pos = m_segments.size ();
} else if (pos == 0 || m_segments.size () <= 0) {
m_segment_pos = 0;
} else {
unsigned int i, tmp_pos = 0;
for (i = 0; tmp_pos <= pos; i++)
tmp_pos += util_utf8_string_length(m_segments[i].kana);
if (tmp_pos == pos) {
m_segment_pos = i + 1;
} else if (tmp_pos < get_caret_pos_by_char ()) {
m_segment_pos = i;
} else if (tmp_pos > get_caret_pos_by_char ()) {
m_segment_pos = i + 1;
}
}
reset_pending ();
}
void
Reading::move_caret (int step, bool allow_split)
{
if (step == 0)
return;
m_key2kana->clear ();
m_kana.clear ();
if (allow_split) {
unsigned int pos = get_caret_pos_by_char ();
if (step < 0 && pos < (int) abs (step)) {
// lower limit
m_segment_pos = 0;
} else if (step > 0 && pos + step > get_length_by_char ()) {
// upper limit
m_segment_pos = m_segments.size ();
} else {
unsigned int new_pos = pos + step;
ReadingSegments::iterator it;
pos = 0;
m_segment_pos = 0;
m_caret_offset = 0;
for (it = m_segments.begin (); pos < new_pos; it++) {
if (pos + util_utf8_string_length(it->kana) > new_pos) {
m_caret_offset = new_pos - pos;
break;
} else {
m_segment_pos++;
pos += util_utf8_string_length(it->kana);
}
}
}
} else {
if (step < 0 && m_segment_pos < (int) abs (step)) {
// lower limit
m_segment_pos = 0;
} else if (step > 0 && m_segment_pos + step > m_segments.size ()) {
// upper limit
m_segment_pos = m_segments.size ();
} else {
// other
m_segment_pos += step;
}
}
reset_pending ();
}
void
Reading::set_typing_method (TypingMethod method)
{
Key2KanaTable *fundamental_table = NULL;
if (method == FCITX_ANTHY_TYPING_METHOD_NICOLA) {
fundamental_table = m_anthy.get_config()->m_custom_nicola_table;
m_key2kana = &m_nicola;
m_nicola_tables.set_typing_method (method, fundamental_table);
m_nicola.set_case_sensitive (true);
} else if (method == FCITX_ANTHY_TYPING_METHOD_KANA) {
fundamental_table = m_anthy.get_config()->m_custom_kana_table;
m_key2kana = &m_key2kana_normal;
m_key2kana_tables.set_typing_method (method, fundamental_table);
m_key2kana_normal.set_case_sensitive (true);
} else {
fundamental_table = m_anthy.get_config()->m_custom_romaji_table;
m_key2kana = &m_key2kana_normal;
m_key2kana_tables.set_typing_method (method, fundamental_table);
m_key2kana_normal.set_case_sensitive (false);
}
}
TypingMethod
Reading::get_typing_method (void)
{
if (m_key2kana == &m_nicola)
return FCITX_ANTHY_TYPING_METHOD_NICOLA;
else
return m_key2kana_tables.get_typing_method ();
}
void
Reading::set_period_style (PeriodStyle style)
{
m_key2kana_tables.set_period_style (style);
}
PeriodStyle
Reading::get_period_style (void)
{
return m_key2kana_tables.get_period_style ();
}
void
Reading::set_comma_style (CommaStyle style)
{
m_key2kana_tables.set_comma_style (style);
}
CommaStyle
Reading::get_comma_style (void)
{
return m_key2kana_tables.get_comma_style ();
}
void
Reading::set_bracket_style (BracketStyle style)
{
m_key2kana_tables.set_bracket_style (style);
}
BracketStyle
Reading::get_bracket_style (void)
{
return m_key2kana_tables.get_bracket_style ();
}
void
Reading::set_slash_style (SlashStyle style)
{
m_key2kana_tables.set_slash_style (style);
}
SlashStyle
Reading::get_slash_style (void)
{
return m_key2kana_tables.get_slash_style ();
}
void
Reading::set_symbol_width (bool half)
{
m_key2kana_tables.set_symbol_width (half);
}
bool
Reading::get_symbol_width (void)
{
return m_key2kana_tables.symbol_is_half ();
}
void
Reading::set_number_width (bool half)
{
m_key2kana_tables.set_number_width (half);
}
bool
Reading::get_number_width (void)
{
return m_key2kana_tables.number_is_half ();
}
void
Reading::set_pseudo_ascii_mode (int mode)
{
m_key2kana_normal.set_pseudo_ascii_mode (mode);
}
bool
Reading::is_pseudo_ascii_mode (void)
{
return m_key2kana_normal.is_pseudo_ascii_mode ();
}
void
Reading::reset_pseudo_ascii_mode (void)
{
if (m_key2kana_normal.is_pseudo_ascii_mode () &&
m_key2kana_normal.is_pending ())
{
ReadingSegment c;
ReadingSegments::iterator it = m_segments.begin ();
/* separate to another segment */
m_key2kana_normal.reset_pseudo_ascii_mode ();
m_segments.insert (it + m_segment_pos, c);
m_segment_pos++;
}
}
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