Import c version pinyin engine

1 files changed, 246 insertions, 0 deletions

diff --git a/src/DoublePinyinEditor.cc b/src/DoublePinyinEditor.cc
new file mode 100644
index 0000000..eb872a9
--- /dev/null
+++ b/src/DoublePinyinEditor.cc
@@ -0,0 +1,246 @@
+#include "Config.h"
+#include "DoublePinyinEditor.h"
+
+namespace PY {
+
+#include "DoublePinyinTable.h"
+
+DoublePinyinEditor::DoublePinyinEditor (void)
+{
+}
+
+static inline gint
+char_to_id (gint ch)
+{
+    switch (ch) {
+    case IBUS_a ... IBUS_z:
+        return ch - IBUS_a;
+    case IBUS_semicolon:
+        return 26;
+    default:
+        return -1;
+    }
+}
+
+inline const Pinyin *
+DoublePinyinEditor::isPinyin (gchar i, gchar j)
+{
+    const Pinyin *pinyin;
+    gint schema = Config::doublePinyinSchema ();
+    gint sheng = double_pinyin_map[schema].sheng[char_to_id(i)];
+    const gint *yun = double_pinyin_map[schema].yun[char_to_id(j)];
+
+    if (sheng == PINYIN_ID_VOID || yun[0] == PINYIN_ID_VOID)
+        return NULL;
+
+    if (sheng == PINYIN_ID_ZERO && yun[0] == PINYIN_ID_ZERO)
+        return NULL;
+
+    pinyin = m_parser.isPinyin (sheng, yun[0], Config::option () & PINYIN_FUZZY_ALL);
+    if (pinyin == NULL && yun[1] != PINYIN_ID_ZERO)
+        pinyin = m_parser.isPinyin (sheng, yun[1], Config::option () & PINYIN_FUZZY_ALL);
+    return pinyin;
+}
+
+gboolean
+DoublePinyinEditor::insert (gint ch)
+{
+    /* is full */
+    if (G_UNLIKELY (m_text.length () >= MAX_PINYIN_LEN))
+        return FALSE;
+
+    gint i = char_to_id (ch);
+    if (i < 0)
+        return FALSE;
+
+    m_text.insert (m_cursor++, ch);
+
+    if (m_cursor != m_pinyin_len + 2)
+        return TRUE;
+
+    const Pinyin *pinyin = isPinyin (m_text[m_cursor - 2], ch);
+    if (pinyin == NULL)
+        return TRUE;
+    m_pinyin << pinyin;
+    m_pinyin_len += 2;
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::removeCharBefore (void)
+{
+    if (G_UNLIKELY (m_cursor == 0))
+        return FALSE;
+
+    m_cursor --;
+    m_text.erase (m_cursor, 1);
+
+    if (m_cursor < m_pinyin_len) {
+        m_pinyin.pop ();
+        m_pinyin_len -= 2;
+    }
+
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::removeCharAfter (void)
+{
+    if (G_UNLIKELY (m_cursor == m_text.length ()))
+        return FALSE;
+
+    m_text.erase (m_cursor, 1);
+
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::removeWordBefore (void)
+{
+    if (G_UNLIKELY (m_cursor == 0))
+        return FALSE;
+
+    guint cursor;
+
+    if (G_UNLIKELY (m_cursor > m_pinyin_len)) {
+        cursor = m_pinyin_len;
+    }
+    else {
+        m_pinyin.pop ();
+        cursor = m_cursor - 2;
+        m_pinyin_len -= 2;
+    }
+
+    m_text.erase (cursor, m_cursor - cursor);
+    m_cursor = cursor;
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::removeWordAfter (void)
+{
+    if (G_UNLIKELY (m_cursor == m_text.length ()))
+        return FALSE;
+
+    m_text.erase (m_cursor, -1);
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::moveCursorLeft (void)
+{
+    if (G_UNLIKELY (m_cursor == 0))
+        return FALSE;
+    m_cursor --;
+
+    if (m_cursor >= m_pinyin_len)
+        return TRUE;
+
+    m_pinyin.pop ();
+    m_pinyin_len -= 2;
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::moveCursorRight (void)
+{
+    if (G_UNLIKELY (m_cursor == m_text.length ()))
+        return FALSE;
+
+    m_cursor ++;
+    updatePinyin ();
+
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::moveCursorLeftByWord (void)
+{
+    if (G_UNLIKELY (m_cursor == 0))
+        return FALSE;
+
+    if (G_UNLIKELY (m_cursor > m_pinyin_len)) {
+        m_cursor = m_pinyin_len;
+        return TRUE;
+    }
+
+    m_pinyin.pop ();
+    m_cursor -= 2;
+    m_pinyin_len -= 2;
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::moveCursorRightByWord (void)
+{
+    return moveCursorToEnd ();
+}
+
+gboolean
+DoublePinyinEditor::moveCursorToBegin (void)
+{
+    if (G_UNLIKELY (m_cursor == 0))
+        return FALSE;
+
+    m_cursor = 0;
+    m_pinyin.removeAll ();
+    m_pinyin_len = 0;
+
+    return TRUE;
+}
+
+gboolean
+DoublePinyinEditor::moveCursorToEnd (void)
+{
+    if (G_UNLIKELY (m_cursor == m_text.length ()))
+        return FALSE;
+
+    m_cursor = m_text.length ();
+    updatePinyin  ();
+
+    return TRUE;
+}
+gboolean
+DoublePinyinEditor::reset (void)
+{
+        gboolean retval = FALSE;
+        if (m_cursor != 0) {
+            m_cursor = 0;
+            retval = TRUE;
+        }
+
+        if (m_text.length () != 0) {
+            m_text.truncate (0);
+            retval = TRUE;
+        }
+
+        if (retval)
+            updatePinyin ();
+
+        return retval;
+    }
+
+
+void
+DoublePinyinEditor::updatePinyin (void)
+{
+    if (G_UNLIKELY (m_text.isEmpty ())) {
+        m_pinyin.removeAll ();
+        m_pinyin_len = 0;
+        return;
+    }
+
+    m_pinyin.removeAll ();
+    m_pinyin_len = 0;
+    for (guint i = 0; i + 1 < m_cursor; i+= 2) {
+        const Pinyin *pinyin = isPinyin (m_text[i], m_text[i + 1]);
+        if (pinyin == NULL)
+            break;
+        m_pinyin << pinyin;
+        m_pinyin_len += 2;
+    }
+}
+
+};
+
+