/*
 * Copyright 1999.1 by Li ZhenChun  zhchli@163.net  All Rights Reserved
 *
 * CCE - Console Chinese Environment -
 * Copyright (C) 1998-1999 Rui He (herui@cs.duke.edu)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
#ifndef	_INPUT_MODULE_H_
#define	_INPUT_MODULE_H_

#define MAX_PY_NUM 520
 /* 1-405 */
#define MAX_EACH_PY 80
#define MAX_EACH_HZ 1024
#define MAX_PY_LEN 10
#define MAX_SELECT_PH 1000
#define MAX_RES_NAME_LEN 60
#define MAX_CHAR_NUM 10
#define MAX_INPUT_BUF 100
#define MAX_HZ_BUF 250

#define MAX_PHRASE_LEN 14
#define MAX_KEY_LEN 18 /* MAX_PHRASE_LEN*10/8+1 */
#define MAX_PHRASE_COUNT 250
  /* same keyphrase phrase count, 106 in fact */

#define KEYLEN(len) (len*10/8 +1)
//#define SEL_AREA_WIDTH 50
#define PINYIN_AREA_WIDTH 20

/* Max single char pinyin length: 6, zhuang, chuang ... */

typedef struct 
{
  u_short key;
  char py[MAX_PY_LEN];   // 7 + 2 = 9 bytes
} PinYin;

/* UsrPhrase is a linked list structure */
typedef struct _UsrPhrase
{
    struct _UsrPhrase *next;
    u_short len;    // phrase len
    u_short count;  // phrase number
    u_char key[0]; // pinyin key [len+1]
}UsrPhrase;

#define SizeOfPhrase(len,count)  ( 4 + len*10/8 +1 + (count)*((len)*2+1) )

typedef struct _Phrase
{
  u_short len;   // phrase len
  u_short count; // phrase number
  u_char key[0];  // pinyin key [len+1]
}Phrase;

typedef struct _SysPhrase
{
  u_short count;
  Phrase phrase[0];
}SysPhrase;

typedef struct _ChoiceItem
{
   Phrase *head;  // pointer to the len field
   u_char index;    // index of the phrase in that 
}ChoiceItem;

typedef char PYString[MAX_PY_LEN];

typedef struct _InputModule
{
  PinYin pytab[26][MAX_EACH_PY];
      // MAX_EACH_PY = 38    a[], b[], c[] ....
      // map the pinyin to keys
  SysPhrase *sysph[MAX_PY_NUM];   // system phrases
  int sys_size;

  int FuzzyPinyin;   // zh-ch-sh z-c-s
  UsrPhrase *usrph[MAX_PY_NUM];  //user defined phrase

  char inbuf[MAX_INPUT_BUF];	/* input buffer for keystrokes */
      // whole inputed pinyin string
  char inbuftmp[MAX_INPUT_BUF];
      // un-selected pinyin string
  char pybuftmp[MAX_INPUT_BUF];
      // selected pinyin string, hanzi

  PYString pinyin[2*MAX_PHRASE_LEN];
     // MAX_PY_LEN = 7, MAX_PHRASE_LEN = 6
  int lenpy;
      // current total pinyin len
  int pinyinpos;
     // current pinyin position

  u_char key[MAX_PHRASE_LEN+1];
  int lenkey;   // the pinyin keys of current selected phrase

  ChoiceItem sel[MAX_SELECT_PH];  // final selection
  Phrase *tempsel[MAX_PHRASE_LEN][500];  // temperoray usage
  int seltotal[MAX_PHRASE_LEN];

  int len;   // total selectable char/phrases
  int startpos;
  int endpos;   // startpos and endpos of showed selection

  char iapybuf[MAX_INPUT_BUF];
      // selected hanzi and inputed pinyin area
  char iahzbuf[MAX_HZ_BUF];
      // MAX_HZ_BUF = 250

} InputModule;   // about 30KB


/* PinYin input */

 void InitPinyinInput(InputModule* inmd);
 void PinyinInputCleanup(InputModule *inmd);
 void ResetPinyinInput(InputModule *inmd);
 void Pinyin_HZFilter(int tty_fd, u_char key);
 void RefreshPYInputArea(InputModule *inmd);

extern InputModule Pinyin_Module;

#endif