/*
 *
 * UNICON - The Console Chinese & I18N
 * Copyright (c) 1999-2002
 *
 * This file is part of UNICON, a console Chinese & I18N
 *
 * 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 of the License, 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.
 *
 * See the file COPYING directory of this archive
 * Author: see CREDITS
 */

#ifndef	_INPUT_MODULE_H_
#define	_INPUT_MODULE_H_

#define MAX_PY_NUM 520
 /* 1-520 for GBK PY */
#define MAX_EACH_PY 80   /* MAX NUMBER of PYs share the same header */
#define MAX_EACH_HZ 1024 /* Never been used ? */
#define MAX_PY_LEN 10
#define MAX_SELECT_PH 800 /* py="yi" has 471 HZ's */
#define MAX_TMP_SELECT 100 /* MAX NUMBER of PY's for each possible input */
#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 int bool;
#define true     1
#define false    0
#define SUCCESS  0

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_short 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,sys_num;
  int FuzzyPinyin;   // zh-ch-sh z-c-s
  UsrPhrase *usrph[MAX_PY_NUM];  //user defined phrase
  int SelectionLen;
  int BootCount;
/* Above variables are untuched by Reset */

  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[KEYLEN(MAX_PHRASE_LEN)];
  int lenkey;   // the pinyin keys of current selected phrase

  ChoiceItem sel[MAX_SELECT_PH];  // final selection
  u_char selwt[MAX_SELECT_PH];
  Phrase *tempsel[MAX_PHRASE_LEN][MAX_TMP_SELECT];  // temperoray usage
  u_char tempselwt[MAX_PHRASE_LEN][MAX_TMP_SELECT];
  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
  int nTotalCurSel;        /* Total Selection */
  int flg_english;
} InputModule;   // about 30KB


/* PinYin input */

 int  InitPinyinInput (InputModule *p, char *szPath);
 void PinyinInputCleanup();
 int SaveUsrPhrase(InputModule *p, char *pathname);
 int SavePhraseFrequency(InputModule *p, char *pathname);
 void ResetPinyinInput(InputModule *inmd);
 int  Pinyin_KeyFilter (InputModule *inmd, u_char key, char *buf, int *len);
 int  Pinyin_KeyPressed (InputModule *inmd, u_char key);
 void RefreshPYInputArea(InputModule *inmd);
 int UnloadSysPhrase (InputModule *p);
 int UnloadUserPhrase (InputModule *p);

#endif