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/***************************************************************************
                        Vocabulary Document for KDE Edu
    -----------------------------------------------------------------------
    copyright            : (C) 1999-2001 Ewald Arnold
                           (C) 2001 The KDE-EDU team
                           (C) 2005 Peter Hedlung
    email                : peter.hedlund@kdemail.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef KEDUVOCDOCUMENT_H
#define KEDUVOCDOCUMENT_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <tqobject.h>

#include <kurl.h>

#include "keduvocexpression.h"

#define KVD_ZERO_TIME  934329599   // 1999-08-10 23:59:59, never change
#define KVD_VERS_PREFIX " v"       // kvoctrain v0.1.0

/** XML tags and attribute names */

#define KV_DOCTYPE     "kvtml"     // doctype
#define KV_TITLE       "title"     // doc title
#define KV_AUTHOR      "author"    // doc author
#define KV_LICENSE     "license"   // doc license
#define KV_DOC_REM     "remark"    // doc remark
#define KV_LINES       "lines"     // entries
#define KV_GENERATOR   "generator" // who generated the doc
#define KV_COLS        "cols"      // columns
#define KV_ENCODING    "encoding"  // document encoding  (obsolete!)

#define KV_EXPR        "e"         // entry for one expression
#define KV_ORG         "o"         // original expression in specified language
#define KV_TRANS       "t"         // translated expression in specified language
#define KV_LANG        "l"         // language: en, de, it, fr ...
#define KV_QUERY       "q"         // query: org or translation
#define KV_O           "o"         // org
#define KV_T           "t"         // translation
#define KV_GRADE       "g"         // grade of knowledge: 0=well known, x=not known for x times
#define KV_LESS_MEMBER "m"         // member of lesson 1 .. x
#define KV_COUNT       "c"         // number of times queried
#define KV_SIZEHINT    "width"     // recommended column width
#define KV_CHARSET     "charset"   // recommended charset (obsolete!)
#define KV_BAD         "b"         // number of times failed
#define KV_DATE        "d"         // last query date
#define KV_DATE2       "w"         // last query date, compressed format
#define KV_REMARK      "r"         // remark for this entry
#define KV_FAUX_AMI_F  "ff"        // false friend of this entry from org
#define KV_FAUX_AMI_T  "tf"        // false friend of this entry to org
#define KV_SYNONYM     "y"         // synonym (same meaning) of expr
#define KV_ANTONYM     "a"         // antonym (oppositite) of expr
#define KV_PRONUNCE    "p"         // how to pronunce this expression
#define KV_SELECTED    "s"         // entry selected for queries
#define KV_INACTIVE    "i"         // entry inactive (for queries)
#define KV_EXPRTYPE    "t"         // type of expression
#define KV_EXAMPLE     "x"         // example string with word
#define KV_USAGE       "u"         // usage label
#define KV_PARAPHRASE  "h"         // paraphrase for expression

/*
 <type>
  <desc no="1">My type 1</desc>
  <desc no="2">My type 2</desc>
 </type>
*/

#define KV_TYPE_GRP    "type"      // type descriptor group
#define KV_TYPE_DESC   "desc"      // type descriptor
#define KV_TYPE_NO     "no"        // type descriptor number

/*
 <usage>
  <desc no="1">My usage 1</desc>
  <desc no="2">My usage 2</desc>
 </type>
*/

#define KV_USAGE_GRP    "usage"     // usage descriptor group
#define KV_USAGE_DESC   "desc"      // usage descriptor
#define KV_USAGE_NO     "no"        // usage descriptor number

/*
 <lesson width="138">
  <desc no="1">Lesson #1</desc>
  <desc no="2" query="1">Lesson #2</desc>
 </lesson>
*/

#define KV_LESS_GRP    "lesson"    // lesson descriptor group
#define KV_LESS_CURR   "current"   // is current lesson
#define KV_LESS_DESC   "desc"      // lesson descriptor
#define KV_LESS_QUERY  "query"     // lesson contained in query
#define KV_LESS_NO     "no"        // lesson descriptor number

/*
 <tense>
  <desc no="1">user tense #1</desc>
  <desc no="2">user tense #2</desc>
 </tense>
*/

#define KV_TENSE_GRP    "tense"     // tense descriptor group
#define KV_TENSE_DESC   "desc"      // tense descriptor
#define KV_TENSE_NO     "no"        // tense descriptor number

/*
 <options>
  <sort on="1"/>
 </options>
*/

#define KV_OPTION_GRP  "options"   // internal options group
#define KV_OPT_SORT    "sort"      // allow sorting
#define KV_BOOL_FLAG   "on"        // general boolean flag

/*
 <article>
  <e l="de">        lang determines also lang order in entries !!
   <fi>eine</fi>    which must NOT differ
   <fd>die</fd>
   <mi>ein</mi>
   <md>der</md>
   <ni>ein</ni>
   <nd>das</nd>
  </e>
 </article>
*/

#define KV_ARTICLE_GRP "article"   // article descriptor group
#define KV_ART_ENTRY   "e"         // article entry
#define KV_ART_FD      "fd"        // female definite
#define KV_ART_MD      "md"        // male definite
#define KV_ART_ND      "nd"        // natural definite
#define KV_ART_FI      "fi"        // female indefinite
#define KV_ART_MI      "mi"        // male indefinite
#define KV_ART_NI      "ni"        // natural indefinite

/*
 <comparison>
   <l1>good</l1>
   <l2>better</l2>
   <l3>best</l3>
 </comparison>
*/

#define KV_COMPARISON_GRP "comparison"   // comparison descriptor group
#define KV_COMP_L1        "l1"           // base form
#define KV_COMP_L2        "l2"           // next form
#define KV_COMP_L3        "l3"           // last form

/*
 <multiplechoice>
   <mc1>good</mc1>
   <mc2>better</mc2>
   <mc3>best</mc3>
   <mc4>best 2</mc4>
   <mc5>best 3</mc5>
 </multiplechoice>
*/

#define KV_MULTIPLECHOICE_GRP "multiplechoice"   // multiple choice descriptor group
#define KV_MC_1        "mc1"           // choice 1
#define KV_MC_2        "mc2"           // choice 2
#define KV_MC_3        "mc3"           // choice 3
#define KV_MC_4        "mc4"           // choice 4
#define KV_MC_5        "mc5"           // choice 5

/*
 <conjugation>        used in header for definiton of "prefix"
  <e l="de">          lang determines also lang order in entries !!
   <s1>I</s1>         which must NOT differ in subsequent <e>-tags
   <s2>you<2>
   <s3f>he</s3f>
   <s3m>she</s3m>
   <s3n>it</s3n>
   <p1>we</p1>
   <p2>you</p2>
   <p3f>they</p3f>
   <p3m>they</p3m>
   <p3n>they</p3n>
  </e>
 </conjugation>

 <conjugation>        and in entry for definition of tenses of (irreg.) verbs
  <t n="sipa">
   <s1>go</s1>
   <s2>go</s2>
   <s3f>goes</s3f>
   <s3m>goes</s3m>
   <s3n>goes</s3n>
   <p1>go</p1>
   <p2>go</p2>
   <p3f>go</p3f>
   <p3m>go</p3m>
   <p3n>go</p3n>
  </t>
 </conjugation>
*/

#define KV_CONJUG_GRP  "conjugation" // conjugation descriptor group
#define KV_CON_ENTRY   "e"           // conjugation entry (header)
#define KV_CON_TYPE    "t"           // conjugation type  (voc entries)
#define KV_CON_NAME    "n"           // conjugation type name (voc entries)
#define KV_CON_P1S     "s1"          // 1. person singular
#define KV_CON_P2S     "s2"          // 2. person singular
#define KV_CON_P3SF    "s3f"         // 3. person singular female
#define KV_CON_P3SM    "s3m"         // 3. person singular male
#define KV_CON_P3SN    "s3n"         // 3. person singular natural
#define KV_CON_P1P     "p1"          // 1. person plural
#define KV_CON_P2P     "p2"          // 2. person plural
#define KV_CON_P3PF    "p3f"         // 3. person plural female
#define KV_CON_P3PM    "p3m"         // 3. person plural male
#define KV_CON_P3PN    "p3n"         // 3. person plural natural
#define KV_CONJ_COMMON "common"      // female contains common for all three

#define LEX_IDENT_50   "Vocabulary Trainer V5.0"

#define KVTML_EXT        "kvtml"
#define VT5_LEX_EXT      "lex"
#define TQVOCAB_EXT       "qvo"
#define VCB_EXT          "vocab"
#define KVL_EXT          "vl"
#define CSV_EXT          "csv"
#define TXT_EXT          "txt"

#define VCB_SEPARATOR    "__"

class TQTextStream;
class TQStringList;
class MultipleChoice;
class LeitnerSystem;

/*************************************************************
  * This class contains the expressions of your vocabulary
  ************************************************************/

class KEduVocDocument : public TQObject
{
  Q_OBJECT
  
  friend class KEduVocKvtmlWriter;
  friend class KEduVocKvtmlReader;
 
 public:

  enum FileType { kvd_none, automatic,
                  kvtml,
                  kvtbin,
                  vt_lex, vt_vcb, csv /*, kvoclearn, qvocab*/ };

  /** Constructor for the fileclass of the application
   *
   * @param obj calling object
   */
  KEduVocDocument(TQObject* obj);

  /** Destructor for the fileclass of the application */
  ~KEduVocDocument();

  /** indicates that doc is (not) modified
   *
   * @param dirty   new state
   */
  inline void setModified (bool _dirty = true) { emit docModified(dirty = _dirty); }

  /** appends another entry at the end
   *
   * @param expr            expression to append
   */
  inline void appendEntry (KEduVocExpression *expr)
    { vocabulary.push_back (*expr); dirty = true; }

  /** insert an entry
   *
   * @param expr            expression to append
   * @param index           index of entry
   */
  inline void insertEntry(KEduVocExpression *expr, int index)
    { vocabulary.insert(vocabulary.begin()+index, *expr); dirty = true; }

  /** removes entry from doc
   *
   * @param index           index of entry
   */
  void removeEntry (int index);

  /** sorts vocabulary alphabetically
   *
   * @param  index            index expression
   * @result direction of sorting: true = ascending
   */
  bool sort (int index);

  /** removes equal entries (orig + all translations)
   *
   * @result                 number of removed entries
   */
  int cleanUp();

  /** sorts vocabulary by lesson indices
   * @result direction of sorting: true = ascending
   */
  bool sortByLesson_index ();

  /** sorts vocabulary by lesson name
   * @result direction of sorting: true = ascending
   */
  bool sortByLesson_alpha ();

  /** enables sorting
   */
  inline void allowSorting(bool allow) { sort_allowed = allow; }

  /** enables sorting
   */
  inline bool isAllowedSorting() { return sort_allowed; }

  /** returns the modification state of the doc */
  inline bool isModified () const { return dirty; }

  /** returns originals identifier
   */
  TQString getOriginalIdent () const;

  /** set originals identifier
   */
  void setOriginalIdent (const TQString &id);

  /** returns identifier of translation x
   *
   * @param index            number of translation 1..x
   * @result                 ident string: de=german, en=englisch, ..
   */
  TQString getIdent (int index) const;

  /** sets identifier of translation
   *
   * @param index            number of translation 1..x
   * @param lang             ident string: de=german, en=englisch, ..
   */
  void setIdent (int index, const TQString &lang);

  /** removes identifier an the according translation in all entries
   *
   * @param index            number of translation 1..x
   */
  void removeIdent (int index);

  /** determines if given translation is available and where
   *
   * @param lang             identifier of language
   * @result                 index of translation, 0=original, -1=none
   */
  int findIdent (const TQString &lang) const;

  /** returns attribute string
   *
   * @param index            number of attribute
   * @result                 string
   */
  TQString getTypeName (int index) const;

  /** sets attribute string
   *
   * @param index            number of attribute
   * @param str              name of attribute
   */
  void setTypeName (int index, TQString &str);

  /** gets descr of types  */
  inline vector<TQString> getTypeDescr() const { return type_descr; }

  /** sets descr of types  */
  inline void setTypeDescr(vector<TQString> names) { type_descr = names; }

  /** returns tense string
   *
   * @param index            number of tense
   * @result                 string
   */
  TQString getTenseName (int index) const;

  /** sets tense string
   *
   * @param index            number of tense
   * @param str              name of tense
   */
  void setTenseName (int index, TQString &str);

  /** gets descr of tenses  */
  inline vector<TQString> getTenseDescr() const { return tense_descr; }

  /** sets descr of tenses  */
  inline void setTenseDescr(vector<TQString> names) { tense_descr = names; }

  /** returns usage string
   *
   * @param index            number of usage
   * @result                 string
   */
  TQString getUsageName (int index) const;

  /** sets usage string
   *
   * @param index            number of usage
   * @param str              name of usage
   */
  void setUsageName (int index, TQString &str);

  /** gets descr of usages  */
  inline vector<TQString> getUsageDescr() const { return usage_descr; }

  /** sets descr of usages  */
  inline void setUsageDescr(vector<TQString> names) { usage_descr = names; }

  /** open a document file
   *
   * @param url     
   * @result         true if successful
   */
  bool open(const KURL& url, bool append);

  /** saves the data under the given name
   *
   * @param url     if url is empty (or NULL) actual name is preserved
   * @result         true if successful
   */
  bool saveAs(TQObject *parent, const KURL & url, FileType ft, const TQString & generator);

  /** returns count of entries
   */
  inline int numEntries() const { return vocabulary.size(); }

  /** sets grades to KV_NORM_GRADE, counts to 0 ...
   *
   * @param index    index of language 0..x, -1 = all
   * @param lesson   lesson id, if this is 0 all lesson are affected,
   *                 otherwise only matching numbers
   */
  void resetEntry (int index = -1, int lesson = 0);

  /** returns count of different languages
   */
  inline int numLangs() const { return langs.size(); } // org + translations

  /** append new lang ident
   */
  inline void appendLang(const TQString & id) { langs.push_back(id); }

  /** returns pointer to expression object x
   *
   * @param index     index of desired entry
   * @result          pointer to object or NULL if index out of range
   */
  KEduVocExpression *getEntry(int index);

  /** search substring in vocabulary (case insensitive always)
   *
   * @param substr     partial string to search
   * @param id         which language to search: 0=org, 1..x=translation
   * @param first      index from where to start
   * @param last       index of last entry, -1 goes till end
   * @param word_start false: search partial string,
   *                   true:always from beginning of word
   * @param tolerant
   * @result          index of found entry, -1 if none
   */
  int search(TQString substr, int id,
             int first=0, int last=-1, bool word_start = false, bool tolerant=false);

  /** returns url of xml file  */
  inline KURL URL() const {return doc_url; }

  /** sets url of xml file  */
  inline void setURL(const KURL& url) {doc_url = url;}

  /** returns title of xml file  */
  TQString getTitle() const;

  /** returns author of file  */
  TQString getAuthor() const;

  /** returns license of file  */
  TQString getLicense() const;

  /** returns remark of file  */
  TQString getDocRemark() const;

  inline void getQueryLang(TQString &org, TQString &trans) const
    { org = queryorg; trans = querytrans; }

  inline void setQueryLang(const TQString &org, const TQString &trans)
    { queryorg = org; querytrans = trans; }

  /** sets title of xml file  */
  void setTitle(const TQString & title);

  /** sets author of file  */
  void setAuthor(const TQString & author);

  /** sets license of file  */
  void setLicense(const TQString & license);

  /** sets remark of file  */
  void setDocRemark(const TQString & rem);

  /** gets version of loaded file  */
  void getVersion(int &major, int &minor, int &patch);

  /** returns current lesson index  */
  inline int getCurrentLesson() const { return current_lesson; }

  /** sets current lesson index
   * @param lesson    index of lesson
   */
  inline void setCurrentLesson(int lesson) { current_lesson = lesson; }

  /** returns descr of lesson  */
  TQString getLessonDescr(int index) const;

  /** returns lessons in current query  */
  vector<int> getLessonsInQuery() const;

  /** sets lessons in current query  */
  void setLessonsInQuery(vector<int>);

  inline vector<TQString> getLessonDescr() const { return lesson_descr; }

  inline int numLessons () const {return (int) lesson_descr.size(); }

  /** sets descr of lesson  */
  inline void setLessonDescr(vector<TQString> names) { lesson_descr = names; }

  /** returns pointer to conjugations if available
   *
   * @param index            index of translation
   */
  Conjugation getConjugation(int index) const;

  /** sets conjugations
   *
   * @param index            index of translation
   * @param con              conjugation block
   */
  void setConjugation(int index, const Conjugation &con);

  /** returns pointer to articles if available
   *
   * @param index            index of translation
   */
  Article getArticle(int index) const;

  /** sets articles
   *
   * @param index            index of translation
   * @param art              article block
   */
  void setArticle(int index, const Article &art);

  /** compress date */
  TQString compressDate(unsigned long) const;

  /** decompress date */
  unsigned long decompressDate(TQString) const;

  /** returns recommended size
   *
   * @param index            number of expr, -1 = lesson
   * @result                 width of column
   */
  int getSizeHint (int index) const;

  /** sets recommended size
   *
   * @param index            number of expr, -1 = lesson
   * @param width            width of column
   */
  void setSizeHint (int index, const int width);

  bool leitnerSystemActive();
  void setLeitnerSystemActive(bool yes);
  void createStandardLeitnerSystem();
  void setLeitnerSystem( LeitnerSystem* system );
  LeitnerSystem* getLeitnerSystem();

  bool unknownAttribute (int line, const TQString &name, const TQString &attr);
  void unknownElement (int line, const TQString &elem );
  void errorKvtMl (int line, const TQString &text );
  void warningKvtMl (int line, const TQString &text );

  void errorLex (int line, const TQString &text );

  void errorCsv (int line, const TQString &text );

  FileType detectFT(const TQString &filename);

  friend class QueryManager;

signals:
  void progressChanged (KEduVocDocument *, int curr_percent);
  void docModified (bool mod);

protected:

  void Init();

  /** sets version of loaded file  */
  void setVersion(const TQString & ver);

  /* TODO
  bool saveToLex     (TQTextStream& os, TQString &title);
  bool loadFromLex   (TQTextStream& is);
  bool loadLessonLex (TQTextStream& is);
  bool saveLessonLex (TQTextStream& os);
  bool saveTypeNameLex   (TQTextStream& os);
  bool loadTypeNameLex   (TQTextStream& is);

  bool saveToCsv     (TQTextStream& os, TQString &title);
  bool loadFromCsv   (TQTextStream& is);
  bool loadLessonCsv (TQTextStream& is);
  bool saveLessonCsv (TQTextStream& os);
  bool saveTypeNameCsv   (TQTextStream& os);
  bool loadTypeNameCsv   (TQTextStream& is);

  bool saveTypeNameVcb (TQTextStream &os);
  bool loadTypeNameVcb (TQTextStream &is);
  bool saveLessonVcb (TQTextStream &os);
  bool loadLessonVcb (TQTextStream &is);
  bool saveToVcb (TQTextStream& os, TQString &title);
  bool loadFromVcb (TQTextStream& is);
  void errorVcb (int line, const TQString &text );
  */

 private:
  bool                  dirty;
  KURL                  doc_url;
  vector<bool>          sort_lang;
  bool                  sort_lesson;
  bool                  unknown_attr;
  bool                  unknown_elem;
  bool                  sort_allowed;

  // save these to document
  vector<TQString>        langs;      //0= origin, 1,.. translations
  int                    cols,
                         lines;
  int                    current_lesson;
  vector<int>            extraSizehints;
  vector<int>            sizehints;
  TQString                generator;
  TQString                queryorg,
                         querytrans;
  vector<KEduVocExpression>  vocabulary;
  vector<bool>           lessons_in_query;
  vector<TQString>        lesson_descr;
  vector<TQString>        type_descr;
  vector<TQString>        tense_descr;
  vector<TQString>        usage_descr;
  TQString                doctitle;
  TQString                author;
  TQString                license;
  TQString                doc_remark;
  TQString                doc_version;

  vector<Article>        articles;
  vector<Conjugation>    conjugations;

  LeitnerSystem* 	 leitnerSystem;
  bool			 activeLeitnerSystem;
};


#endif // KEDUVOCDOCUMENT_H