/ Check-in [96ea6004]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Improve the performance of the fts5 porter tokenizer implementation.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | fts5
Files: files | file ages | folders
SHA1:96ea600440de05ee663e71c3f0d0de2c64108bf9
User & Date: dan 2015-01-17 17:48:10
Context
2015-01-17
20:01
Ensure an up to date copy of the fts5 configuration has been loaded into memory before attempting to modify the same configuration. check-in: f30afd20 user: dan tags: fts5
17:48
Improve the performance of the fts5 porter tokenizer implementation. check-in: 96ea6004 user: dan tags: fts5
2015-01-13
17:25
Fix prefix indexes so that they work in characters, not bytes. check-in: af8d43a4 user: dan tags: fts5
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to ext/fts5/fts5_tokenize.c.

439
440
441
442
443
444
445

446
447
448
449
450
451
452
...
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
...
662
663
664
665
666
667
668






669
670
671
672
673
674
675
676


677
678
679
680
681
682
683
684
685

686



687
688
689
690
691

692
693
694
695
696
697
698
699
700
701
702
703
704
705




706







707







708



709







710
711
712



713



714



715











716







717







718



719







720







721







722



















































723




724








725




726
727
728


729
730





731








732








733




734




735




736




737
738
739


740
741





742




743




744








745




746




747




748








749




750




751


















752
753








754







755




756








757







758







759


















760
761
762


763




764
















































765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790





791
792
793
794
795
796
797
798
799
800
801
      ** largest possible utf-8 character.  */
      if( (zOut-aFold)+6>nFold ){
        aFold = sqlite3_malloc(nFold*2);
        if( aFold==0 ){
          rc = SQLITE_NOMEM;
          goto tokenize_done;
        }

        memcpy(aFold, p->aFold, nFold);
        sqlite3_free(p->aFold);
        p->aFold = aFold;
        p->nFold = nFold = nFold*2;
      }

      if( *zCsr & 0x80 ){
................................................................................
  int rc = SQLITE_OK;
  PorterTokenizer *pRet;
  void *pUserdata = 0;

  pRet = (PorterTokenizer*)sqlite3_malloc(sizeof(PorterTokenizer));
  if( pRet ){
    memset(pRet, 0, sizeof(PorterTokenizer));
    rc = pApi->xFindTokenizer(pApi, "ascii", &pUserdata, &pRet->tokenizer);
  }else{
    rc = SQLITE_NOMEM;
  }
  if( rc==SQLITE_OK ){
    rc = pRet->tokenizer.xCreate(pUserdata, 0, 0, &pRet->pTokenizer);
  }

................................................................................
    if( fts5PorterIsVowel(zStem[i], i>0) ){
      return 1;
    }
  }
  return 0;
}







static int fts5PorterCb(
  void *pCtx, 
  const char *pToken, 
  int nToken, 
  int iStart, 
  int iEnd
){
  PorterContext *p = (PorterContext*)pCtx;



  PorterRule aStep1A[] = {
    { "sses", 4,  0, "ss", 2 },
    { "ies",  3,  0, "i",  1  },
    { "ss",   2,  0, "ss", 2 },
    { "s",    1,  0, "",   0 },
    { 0, 0, 0, 0 }
  };


  PorterRule aStep1B[] = {



    { "eed", 3,  fts5Porter_MGt0,  "ee", 2 },
    { "ed",  2,  fts5Porter_Vowel, "",   0 },
    { "ing", 3,  fts5Porter_Vowel, "",   0 },
    { 0, 0, 0, 0 }
  };


  PorterRule aStep1B2[] = {
    { "at", 2,  0, "ate", 3 },
    { "bl", 2,  0, "ble", 3 },
    { "iz", 2,  0, "ize", 3 },
    { 0, 0, 0, 0 }
  };

  PorterRule aStep1C[] = {
    { "y",  1,  fts5Porter_Vowel, "i", 1 },
    { 0, 0, 0, 0 }
  };

  PorterRule aStep2[] = {




    { "ational", 7, fts5Porter_MGt0, "ate", 3}, 







    { "tional", 6, fts5Porter_MGt0, "tion", 4}, 







    { "enci", 4, fts5Porter_MGt0, "ence", 4}, 



    { "anci", 4, fts5Porter_MGt0, "ance", 4}, 







    { "izer", 4, fts5Porter_MGt0, "ize", 3}, 
    { "logi", 4, fts5Porter_MGt0, "log", 3},     /* added post 1979 */
    { "bli", 3, fts5Porter_MGt0, "ble", 3},      /* modified post 1979 */



    { "alli", 4, fts5Porter_MGt0, "al", 2}, 



    { "entli", 5, fts5Porter_MGt0, "ent", 3}, 



    { "eli", 3, fts5Porter_MGt0, "e", 1}, 











    { "ousli", 5, fts5Porter_MGt0, "ous", 3}, 







    { "ization", 7, fts5Porter_MGt0, "ize", 3}, 







    { "ation", 5, fts5Porter_MGt0, "ate", 3}, 



    { "ator", 4, fts5Porter_MGt0, "ate", 3}, 







    { "alism", 5, fts5Porter_MGt0, "al", 2}, 







    { "iveness", 7, fts5Porter_MGt0, "ive", 3}, 







    { "fulness", 7, fts5Porter_MGt0, "ful", 3}, 



















































    { "ousness", 7, fts5Porter_MGt0, "ous", 3}, 




    { "aliti", 5, fts5Porter_MGt0, "al", 2}, 








    { "iviti", 5, fts5Porter_MGt0, "ive", 3}, 




    { "biliti", 6, fts5Porter_MGt0, "ble", 3}, 
    { 0, 0, 0, 0 }
  };



  PorterRule aStep3[] = {





    { "icate", 5, fts5Porter_MGt0, "ic", 2}, 








    { "ative", 5, fts5Porter_MGt0, "", 0}, 








    { "alize", 5, fts5Porter_MGt0, "al", 2}, 




    { "iciti", 5, fts5Porter_MGt0, "ic", 2}, 




    { "ical", 4, fts5Porter_MGt0, "ic", 2}, 




    { "ful", 3, fts5Porter_MGt0, "", 0}, 




    { "ness", 4, fts5Porter_MGt0, "", 0}, 
    { 0, 0, 0, 0 }
  };



  PorterRule aStep4[] = {





    { "al", 2, fts5Porter_MGt1, "", 0}, 




    { "ance", 4, fts5Porter_MGt1, "", 0}, 




    { "ence", 4, fts5Porter_MGt1, "", 0}, 








    { "er", 2, fts5Porter_MGt1, "", 0}, 




    { "ic", 2, fts5Porter_MGt1, "", 0}, 




    { "able", 4, fts5Porter_MGt1, "", 0}, 




    { "ible", 4, fts5Porter_MGt1, "", 0}, 








    { "ant", 3, fts5Porter_MGt1, "", 0}, 




    { "ement", 5, fts5Porter_MGt1, "", 0}, 




    { "ment", 4, fts5Porter_MGt1, "", 0}, 


















    { "ent", 3, fts5Porter_MGt1, "", 0}, 
    { "ion", 3, fts5Porter_MGt1_and_S_or_T, "", 0}, 








    { "ou", 2, fts5Porter_MGt1, "", 0}, 







    { "ism", 3, fts5Porter_MGt1, "", 0}, 




    { "ate", 3, fts5Porter_MGt1, "", 0}, 








    { "iti", 3, fts5Porter_MGt1, "", 0}, 







    { "ous", 3, fts5Porter_MGt1, "", 0}, 







    { "ive", 3, fts5Porter_MGt1, "", 0}, 


















    { "ize", 3, fts5Porter_MGt1, "", 0}, 
    { 0, 0, 0, 0 }
  };
























































  char *aBuf;
  int nBuf;
  int n;

  if( nToken>FTS5_PORTER_MAX_TOKEN || nToken<3 ) goto pass_through;
  aBuf = p->aBuf;
  nBuf = nToken;
  memcpy(aBuf, pToken, nBuf);

  /* Step 1. */
  fts5PorterApply(aBuf, &nBuf, aStep1A);
  n = fts5PorterApply(aBuf, &nBuf, aStep1B);
  if( n==1 || n==2 ){
    if( fts5PorterApply(aBuf, &nBuf, aStep1B2)<0 ){
      char c = aBuf[nBuf-1];
      if( fts5PorterIsVowel(c, 0)==0 
       && c!='l' && c!='s' && c!='z' && c==aBuf[nBuf-2] 
      ){
        nBuf--;
      }else if( fts5Porter_MEq1(aBuf, nBuf) && fts5Porter_Ostar(aBuf, nBuf) ){
        aBuf[nBuf++] = 'e';
      }
    }
  }
  fts5PorterApply(aBuf, &nBuf, aStep1C);






  /* Steps 2 through 4. */
  fts5PorterApply(aBuf, &nBuf, aStep2);
  fts5PorterApply(aBuf, &nBuf, aStep3);
  fts5PorterApply(aBuf, &nBuf, aStep4);

  /* Step 5a. */
  if( nBuf>0 && aBuf[nBuf-1]=='e' ){
    if( fts5Porter_MGt1(aBuf, nBuf-1) 
     || (fts5Porter_MEq1(aBuf, nBuf-1) && !fts5Porter_Ostar(aBuf, nBuf-1))
    ){
      nBuf--;







>







 







|







 







>
>
>
>
>
>
|
<
<
<
<
|
<
<
>
>
|
<
<
|
|
|
|
<
|
>
|
>
>
>
|
<
<
<
<
>
|
|
|
|
<
<
<
|
<
<
<
<
|
<
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
|
>
>
>
>
>
>
>
|
<
<
>
>
>
|
>
>
>
|
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
>
>
>
>
|
>
>
>
>
>
>
>
>
|
>
>
>
>
|
<
<
>
>
|
<
>
>
>
>
>
|
>
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
<
<
>
>
|
<
>
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
>
>
>
>
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
>
>
>
>
>
>
>
>
|
>
>
>
>
|
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
<
>
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
|
>
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
<
<
>
>
|
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>


<







|
|
|
<










<

>
>
>
>
>

|
|
|







439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
...
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
...
663
664
665
666
667
668
669
670
671
672
673
674
675
676




677


678
679
680


681
682
683
684

685
686
687
688
689
690
691




692
693
694
695
696



697




698

699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731


732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870


871
872
873

874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917


918
919
920

921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998

999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064


1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122

1123
1124
1125
1126
1127
1128
1129
1130
1131
1132

1133
1134
1135
1136
1137
1138
1139
1140
1141
1142

1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
      ** largest possible utf-8 character.  */
      if( (zOut-aFold)+6>nFold ){
        aFold = sqlite3_malloc(nFold*2);
        if( aFold==0 ){
          rc = SQLITE_NOMEM;
          goto tokenize_done;
        }
        zOut = &aFold[zOut - p->aFold];
        memcpy(aFold, p->aFold, nFold);
        sqlite3_free(p->aFold);
        p->aFold = aFold;
        p->nFold = nFold = nFold*2;
      }

      if( *zCsr & 0x80 ){
................................................................................
  int rc = SQLITE_OK;
  PorterTokenizer *pRet;
  void *pUserdata = 0;

  pRet = (PorterTokenizer*)sqlite3_malloc(sizeof(PorterTokenizer));
  if( pRet ){
    memset(pRet, 0, sizeof(PorterTokenizer));
    rc = pApi->xFindTokenizer(pApi, "unicode61", &pUserdata, &pRet->tokenizer);
  }else{
    rc = SQLITE_NOMEM;
  }
  if( rc==SQLITE_OK ){
    rc = pRet->tokenizer.xCreate(pUserdata, 0, 0, &pRet->pTokenizer);
  }

................................................................................
    if( fts5PorterIsVowel(zStem[i], i>0) ){
      return 1;
    }
  }
  return 0;
}


/**************************************************************************
***************************************************************************
** GENERATED CODE STARTS HERE (mkportersteps.tcl)
*/

static int fts5PorterStep4(char *aBuf, int *pnBuf){




  int ret = 0;


  int nBuf = *pnBuf;
  switch( aBuf[nBuf-2] ){
    


    case 'a': 
      if( nBuf>2 && 0==memcmp("al", &aBuf[nBuf-2], 2) ){
        if( fts5Porter_MGt1(aBuf, nBuf-2) ){
          *pnBuf = nBuf - 2;

        }
      }
      break;
  
    case 'c': 
      if( nBuf>4 && 0==memcmp("ance", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt1(aBuf, nBuf-4) ){




          *pnBuf = nBuf - 4;
        }
      }else if( nBuf>4 && 0==memcmp("ence", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt1(aBuf, nBuf-4) ){
          *pnBuf = nBuf - 4;



        }




      }

      break;
  
    case 'e': 
      if( nBuf>2 && 0==memcmp("er", &aBuf[nBuf-2], 2) ){
        if( fts5Porter_MGt1(aBuf, nBuf-2) ){
          *pnBuf = nBuf - 2;
        }
      }
      break;
  
    case 'i': 
      if( nBuf>2 && 0==memcmp("ic", &aBuf[nBuf-2], 2) ){
        if( fts5Porter_MGt1(aBuf, nBuf-2) ){
          *pnBuf = nBuf - 2;
        }
      }
      break;
  
    case 'l': 
      if( nBuf>4 && 0==memcmp("able", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt1(aBuf, nBuf-4) ){
          *pnBuf = nBuf - 4;
        }
      }else if( nBuf>4 && 0==memcmp("ible", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt1(aBuf, nBuf-4) ){
          *pnBuf = nBuf - 4;
        }
      }
      break;
  
    case 'n': 
      if( nBuf>3 && 0==memcmp("ant", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){


          *pnBuf = nBuf - 3;
        }
      }else if( nBuf>5 && 0==memcmp("ement", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt1(aBuf, nBuf-5) ){
          *pnBuf = nBuf - 5;
        }
      }else if( nBuf>4 && 0==memcmp("ment", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt1(aBuf, nBuf-4) ){
          *pnBuf = nBuf - 4;
        }
      }else if( nBuf>3 && 0==memcmp("ent", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
    case 'o': 
      if( nBuf>3 && 0==memcmp("ion", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1_and_S_or_T(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }else if( nBuf>2 && 0==memcmp("ou", &aBuf[nBuf-2], 2) ){
        if( fts5Porter_MGt1(aBuf, nBuf-2) ){
          *pnBuf = nBuf - 2;
        }
      }
      break;
  
    case 's': 
      if( nBuf>3 && 0==memcmp("ism", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
    case 't': 
      if( nBuf>3 && 0==memcmp("ate", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }else if( nBuf>3 && 0==memcmp("iti", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
    case 'u': 
      if( nBuf>3 && 0==memcmp("ous", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
    case 'v': 
      if( nBuf>3 && 0==memcmp("ive", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
    case 'z': 
      if( nBuf>3 && 0==memcmp("ize", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt1(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
  }
  return ret;
}
  

static int fts5PorterStep1B2(char *aBuf, int *pnBuf){
  int ret = 0;
  int nBuf = *pnBuf;
  switch( aBuf[nBuf-2] ){
    
    case 'a': 
      if( nBuf>2 && 0==memcmp("at", &aBuf[nBuf-2], 2) ){
        memcpy(&aBuf[nBuf-2], "ate", 3);
        *pnBuf = nBuf - 2 + 3;
        ret = 1;
      }
      break;
  
    case 'b': 
      if( nBuf>2 && 0==memcmp("bl", &aBuf[nBuf-2], 2) ){
        memcpy(&aBuf[nBuf-2], "ble", 3);
        *pnBuf = nBuf - 2 + 3;
        ret = 1;
      }
      break;
  
    case 'i': 
      if( nBuf>2 && 0==memcmp("iz", &aBuf[nBuf-2], 2) ){
        memcpy(&aBuf[nBuf-2], "ize", 3);
        *pnBuf = nBuf - 2 + 3;
        ret = 1;
      }
      break;
  
  }
  return ret;
}
  

static int fts5PorterStep2(char *aBuf, int *pnBuf){
  int ret = 0;
  int nBuf = *pnBuf;
  switch( aBuf[nBuf-2] ){
    
    case 'a': 
      if( nBuf>7 && 0==memcmp("ational", &aBuf[nBuf-7], 7) ){
        if( fts5Porter_MGt0(aBuf, nBuf-7) ){
          memcpy(&aBuf[nBuf-7], "ate", 3);
          *pnBuf = nBuf - 7 + 3;
        }
      }else if( nBuf>6 && 0==memcmp("tional", &aBuf[nBuf-6], 6) ){
        if( fts5Porter_MGt0(aBuf, nBuf-6) ){
          memcpy(&aBuf[nBuf-6], "tion", 4);
          *pnBuf = nBuf - 6 + 4;
        }
      }
      break;
  
    case 'c': 
      if( nBuf>4 && 0==memcmp("enci", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){
          memcpy(&aBuf[nBuf-4], "ence", 4);
          *pnBuf = nBuf - 4 + 4;
        }
      }else if( nBuf>4 && 0==memcmp("anci", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){


          memcpy(&aBuf[nBuf-4], "ance", 4);
          *pnBuf = nBuf - 4 + 4;
        }

      }
      break;
  
    case 'e': 
      if( nBuf>4 && 0==memcmp("izer", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){
          memcpy(&aBuf[nBuf-4], "ize", 3);
          *pnBuf = nBuf - 4 + 3;
        }
      }
      break;
  
    case 'g': 
      if( nBuf>4 && 0==memcmp("logi", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){
          memcpy(&aBuf[nBuf-4], "log", 3);
          *pnBuf = nBuf - 4 + 3;
        }
      }
      break;
  
    case 'l': 
      if( nBuf>3 && 0==memcmp("bli", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt0(aBuf, nBuf-3) ){
          memcpy(&aBuf[nBuf-3], "ble", 3);
          *pnBuf = nBuf - 3 + 3;
        }
      }else if( nBuf>4 && 0==memcmp("alli", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){
          memcpy(&aBuf[nBuf-4], "al", 2);
          *pnBuf = nBuf - 4 + 2;
        }
      }else if( nBuf>5 && 0==memcmp("entli", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "ent", 3);
          *pnBuf = nBuf - 5 + 3;
        }
      }else if( nBuf>3 && 0==memcmp("eli", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt0(aBuf, nBuf-3) ){
          memcpy(&aBuf[nBuf-3], "e", 1);
          *pnBuf = nBuf - 3 + 1;
        }
      }else if( nBuf>5 && 0==memcmp("ousli", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){


          memcpy(&aBuf[nBuf-5], "ous", 3);
          *pnBuf = nBuf - 5 + 3;
        }

      }
      break;
  
    case 'o': 
      if( nBuf>7 && 0==memcmp("ization", &aBuf[nBuf-7], 7) ){
        if( fts5Porter_MGt0(aBuf, nBuf-7) ){
          memcpy(&aBuf[nBuf-7], "ize", 3);
          *pnBuf = nBuf - 7 + 3;
        }
      }else if( nBuf>5 && 0==memcmp("ation", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "ate", 3);
          *pnBuf = nBuf - 5 + 3;
        }
      }else if( nBuf>4 && 0==memcmp("ator", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){
          memcpy(&aBuf[nBuf-4], "ate", 3);
          *pnBuf = nBuf - 4 + 3;
        }
      }
      break;
  
    case 's': 
      if( nBuf>5 && 0==memcmp("alism", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "al", 2);
          *pnBuf = nBuf - 5 + 2;
        }
      }else if( nBuf>7 && 0==memcmp("iveness", &aBuf[nBuf-7], 7) ){
        if( fts5Porter_MGt0(aBuf, nBuf-7) ){
          memcpy(&aBuf[nBuf-7], "ive", 3);
          *pnBuf = nBuf - 7 + 3;
        }
      }else if( nBuf>7 && 0==memcmp("fulness", &aBuf[nBuf-7], 7) ){
        if( fts5Porter_MGt0(aBuf, nBuf-7) ){
          memcpy(&aBuf[nBuf-7], "ful", 3);
          *pnBuf = nBuf - 7 + 3;
        }
      }else if( nBuf>7 && 0==memcmp("ousness", &aBuf[nBuf-7], 7) ){
        if( fts5Porter_MGt0(aBuf, nBuf-7) ){
          memcpy(&aBuf[nBuf-7], "ous", 3);
          *pnBuf = nBuf - 7 + 3;
        }
      }
      break;
  
    case 't': 
      if( nBuf>5 && 0==memcmp("aliti", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "al", 2);
          *pnBuf = nBuf - 5 + 2;
        }
      }else if( nBuf>5 && 0==memcmp("iviti", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "ive", 3);
          *pnBuf = nBuf - 5 + 3;
        }
      }else if( nBuf>6 && 0==memcmp("biliti", &aBuf[nBuf-6], 6) ){
        if( fts5Porter_MGt0(aBuf, nBuf-6) ){
          memcpy(&aBuf[nBuf-6], "ble", 3);
          *pnBuf = nBuf - 6 + 3;
        }
      }
      break;
  
  }
  return ret;
}
  

static int fts5PorterStep3(char *aBuf, int *pnBuf){
  int ret = 0;
  int nBuf = *pnBuf;
  switch( aBuf[nBuf-2] ){
    
    case 'a': 
      if( nBuf>4 && 0==memcmp("ical", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){

          memcpy(&aBuf[nBuf-4], "ic", 2);
          *pnBuf = nBuf - 4 + 2;
        }
      }
      break;
  
    case 's': 
      if( nBuf>4 && 0==memcmp("ness", &aBuf[nBuf-4], 4) ){
        if( fts5Porter_MGt0(aBuf, nBuf-4) ){
          *pnBuf = nBuf - 4;
        }
      }
      break;
  
    case 't': 
      if( nBuf>5 && 0==memcmp("icate", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "ic", 2);
          *pnBuf = nBuf - 5 + 2;
        }
      }else if( nBuf>5 && 0==memcmp("iciti", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "ic", 2);
          *pnBuf = nBuf - 5 + 2;
        }
      }
      break;
  
    case 'u': 
      if( nBuf>3 && 0==memcmp("ful", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt0(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
        }
      }
      break;
  
    case 'v': 
      if( nBuf>5 && 0==memcmp("ative", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          *pnBuf = nBuf - 5;
        }
      }
      break;
  
    case 'z': 
      if( nBuf>5 && 0==memcmp("alize", &aBuf[nBuf-5], 5) ){
        if( fts5Porter_MGt0(aBuf, nBuf-5) ){
          memcpy(&aBuf[nBuf-5], "al", 2);
          *pnBuf = nBuf - 5 + 2;
        }
      }
      break;
  
  }
  return ret;
}
  

static int fts5PorterStep1B(char *aBuf, int *pnBuf){
  int ret = 0;
  int nBuf = *pnBuf;
  switch( aBuf[nBuf-2] ){
    
    case 'e': 
      if( nBuf>3 && 0==memcmp("eed", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_MGt0(aBuf, nBuf-3) ){


          memcpy(&aBuf[nBuf-3], "ee", 2);
          *pnBuf = nBuf - 3 + 2;
        }
      }else if( nBuf>2 && 0==memcmp("ed", &aBuf[nBuf-2], 2) ){
        if( fts5Porter_Vowel(aBuf, nBuf-2) ){
          *pnBuf = nBuf - 2;
          ret = 1;
        }
      }
      break;
  
    case 'n': 
      if( nBuf>3 && 0==memcmp("ing", &aBuf[nBuf-3], 3) ){
        if( fts5Porter_Vowel(aBuf, nBuf-3) ){
          *pnBuf = nBuf - 3;
          ret = 1;
        }
      }
      break;
  
  }
  return ret;
}
  
/* 
** GENERATED CODE ENDS HERE (mkportersteps.tcl)
***************************************************************************
**************************************************************************/

static void fts5PorterStep1A(char *aBuf, int *pnBuf){
  int nBuf = *pnBuf;
  if( aBuf[nBuf-1]=='s' ){
    if( aBuf[nBuf-2]=='e' ){
      if( (nBuf>4 && aBuf[nBuf-4]=='s' && aBuf[nBuf-3]=='s') 
       || (nBuf>3 && aBuf[nBuf-3]=='i' )
      ){
        *pnBuf = nBuf-2;
      }else{
        *pnBuf = nBuf-1;
      }
    }
    else if( aBuf[nBuf-2]!='s' ){
      *pnBuf = nBuf-1;
    }
  }
}

static int fts5PorterCb(
  void *pCtx, 
  const char *pToken, 
  int nToken, 
  int iStart, 
  int iEnd
){
  PorterContext *p = (PorterContext*)pCtx;

  char *aBuf;
  int nBuf;


  if( nToken>FTS5_PORTER_MAX_TOKEN || nToken<3 ) goto pass_through;
  aBuf = p->aBuf;
  nBuf = nToken;
  memcpy(aBuf, pToken, nBuf);

  /* Step 1. */
  fts5PorterStep1A(aBuf, &nBuf);
  if( fts5PorterStep1B(aBuf, &nBuf) ){
    if( fts5PorterStep1B2(aBuf, &nBuf)==0 ){

      char c = aBuf[nBuf-1];
      if( fts5PorterIsVowel(c, 0)==0 
       && c!='l' && c!='s' && c!='z' && c==aBuf[nBuf-2] 
      ){
        nBuf--;
      }else if( fts5Porter_MEq1(aBuf, nBuf) && fts5Porter_Ostar(aBuf, nBuf) ){
        aBuf[nBuf++] = 'e';
      }
    }
  }


  /* Step 1C. */
  if( aBuf[nBuf-1]=='y' && fts5Porter_Vowel(aBuf, nBuf-1) ){
    aBuf[nBuf-1] = 'i';
  }

  /* Steps 2 through 4. */
  fts5PorterStep2(aBuf, &nBuf);
  fts5PorterStep3(aBuf, &nBuf);
  fts5PorterStep4(aBuf, &nBuf);

  /* Step 5a. */
  if( nBuf>0 && aBuf[nBuf-1]=='e' ){
    if( fts5Porter_MGt1(aBuf, nBuf-1) 
     || (fts5Porter_MEq1(aBuf, nBuf-1) && !fts5Porter_Ostar(aBuf, nBuf-1))
    ){
      nBuf--;

Added ext/fts5/mkportersteps.tcl.





























































































































































































































































































































































































































































>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
#
# 2014 Jun 09
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#-------------------------------------------------------------------------
#
# This script generates the implementations of the following C functions,
# which are part of the porter tokenizer implementation:
#
#   static int fts5PorterStep1B(char *aBuf, int *pnBuf);
#   static int fts5PorterStep1B2(char *aBuf, int *pnBuf);
#   static int fts5PorterStep2(char *aBuf, int *pnBuf);
#   static int fts5PorterStep3(char *aBuf, int *pnBuf);
#   static int fts5PorterStep4(char *aBuf, int *pnBuf);
#

set O(Step1B2) {
  { at  {} ate 1 }
  { bl  {} ble 1 }
  { iz  {} ize 1 }
}

set O(Step1B) {
  { "eed"  fts5Porter_MGt0  "ee" 0 }
  { "ed"   fts5Porter_Vowel ""   1 }
  { "ing"  fts5Porter_Vowel ""   1 }
}

set O(Step2) {
  { "ational" fts5Porter_MGt0 "ate" } 
  { "tional"  fts5Porter_MGt0 "tion" } 
  { "enci"    fts5Porter_MGt0 "ence" } 
  { "anci"    fts5Porter_MGt0 "ance" } 
  { "izer"    fts5Porter_MGt0 "ize" } 
  { "logi"    fts5Porter_MGt0 "log" }
  { "bli"     fts5Porter_MGt0 "ble" }
  { "alli"    fts5Porter_MGt0 "al" } 
  { "entli"   fts5Porter_MGt0 "ent" } 
  { "eli"     fts5Porter_MGt0 "e" } 
  { "ousli"   fts5Porter_MGt0 "ous" } 
  { "ization" fts5Porter_MGt0 "ize" } 
  { "ation"   fts5Porter_MGt0 "ate" } 
  { "ator"    fts5Porter_MGt0 "ate" } 
  { "alism"   fts5Porter_MGt0 "al" } 
  { "iveness" fts5Porter_MGt0 "ive" } 
  { "fulness" fts5Porter_MGt0 "ful" } 
  { "ousness" fts5Porter_MGt0 "ous" } 
  { "aliti"   fts5Porter_MGt0 "al" } 
  { "iviti"   fts5Porter_MGt0 "ive" } 
  { "biliti"  fts5Porter_MGt0 "ble" } 
}

set O(Step3) {
  { "icate" fts5Porter_MGt0 "ic" } 
  { "ative" fts5Porter_MGt0 "" } 
  { "alize" fts5Porter_MGt0 "al" } 
  { "iciti" fts5Porter_MGt0 "ic" } 
  { "ical" fts5Porter_MGt0 "ic" } 
  { "ful" fts5Porter_MGt0 "" } 
  { "ness" fts5Porter_MGt0 "" } 
}

set O(Step4) {
  { "al" fts5Porter_MGt1 "" } 
  { "ance" fts5Porter_MGt1 "" } 
  { "ence" fts5Porter_MGt1 "" } 
  { "er" fts5Porter_MGt1 "" } 
  { "ic" fts5Porter_MGt1 "" } 
  { "able" fts5Porter_MGt1 "" } 
  { "ible" fts5Porter_MGt1 "" } 
  { "ant" fts5Porter_MGt1 "" } 
  { "ement" fts5Porter_MGt1 "" } 
  { "ment" fts5Porter_MGt1 "" } 
  { "ent" fts5Porter_MGt1 "" } 
  { "ion" fts5Porter_MGt1_and_S_or_T "" } 
  { "ou"  fts5Porter_MGt1 "" } 
  { "ism" fts5Porter_MGt1 "" } 
  { "ate" fts5Porter_MGt1 "" } 
  { "iti" fts5Porter_MGt1 "" } 
  { "ous" fts5Porter_MGt1 "" } 
  { "ive" fts5Porter_MGt1 "" } 
  { "ize" fts5Porter_MGt1 "" } 
}

proc sort_cb {lhs rhs} {
  set L [string range [lindex $lhs 0] end-1 end-1]
  set R [string range [lindex $rhs 0] end-1 end-1]
  string compare $L $R
}

proc create_step_function {name data} {

  set T(function) {
static int fts5Porter${name}(char *aBuf, int *pnBuf){
  int ret = 0;
  int nBuf = *pnBuf;
  switch( aBuf[nBuf-2] ){
    ${switchbody}
  }
  return ret;
}
  }

  set T(case) {
    case '${k}': 
      ${ifstmts}
      break;
  }

  set T(if_0_0_0) {
      if( ${match} ){
        *pnBuf = nBuf - $n;
      }
  }
  set T(if_1_0_0) {
      if( ${match} ){
        if( ${cond} ){
          *pnBuf = nBuf - $n;
        }
      }
  }
  set T(if_0_1_0) {
      if( ${match} ){
        ${memcpy}
        *pnBuf = nBuf - $n + $nRep;
      }
  }
  set T(if_1_1_0) {
      if( ${match} ){
        if( ${cond} ){
          ${memcpy}
          *pnBuf = nBuf - $n + $nRep;
        }
      }
  }
  set T(if_1_0_1) {
      if( ${match} ){
        if( ${cond} ){
          *pnBuf = nBuf - $n;
          ret = 1;
        }
      }
  }
  set T(if_0_1_1) {
      if( ${match} ){
        ${memcpy}
        *pnBuf = nBuf - $n + $nRep;
        ret = 1;
      }
  }
  set T(if_1_1_1) {
      if( ${match} ){
        if( ${cond} ){
          ${memcpy}
          *pnBuf = nBuf - $n + $nRep;
          ret = 1;
        }
      }
  }

  set switchbody ""

  foreach I $data {
    set k [string range [lindex $I 0] end-1 end-1]
    lappend aCase($k) $I
  }
  foreach k [lsort [array names aCase]] {
    set ifstmts ""
    foreach I $aCase($k) {
      set zSuffix [lindex $I 0]         ;# Suffix text for this rule
      set zRep [lindex $I 2]            ;# Replacement text for rule 
      set xCond [lindex $I 1]           ;# Condition callback (or "")

      set n [string length $zSuffix]
      set nRep [string length $zRep]

      set match "nBuf>$n && 0==memcmp(\"$zSuffix\", &aBuf\[nBuf-$n\], $n)"
      set memcpy "memcpy(&aBuf\[nBuf-$n\], \"$zRep\", $nRep);"
      set cond "${xCond}(aBuf, nBuf-$n)"

      set bMemcpy [expr {$nRep>0}]
      set bCond [expr {$xCond!=""}]
      set bRet [expr {[llength $I]>3 && [lindex $I 3]}]

      set t $T(if_${bCond}_${bMemcpy}_${bRet})
      lappend ifstmts [string trim [subst -nocommands $t]]
    }

    set ifstmts [join $ifstmts "else "]

    append switchbody [subst -nocommands $T(case)]
  }


  puts [subst -nocommands $T(function)]
}


puts [string trim {
/**************************************************************************
***************************************************************************
** GENERATED CODE STARTS HERE (mkportersteps.tcl)
*/
}]
foreach step [array names O] {
  create_step_function $step $O($step)
}
puts [string trim {
/* 
** GENERATED CODE ENDS HERE (mkportersteps.tcl)
***************************************************************************
**************************************************************************/
}]



Added ext/fts5/tool/loadfts5.tcl.















































































































































>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71


proc loadfile {f} {
  set fd [open $f]
  set data [read $fd]
  close $fd
  return $data
}

set ::nRow 0
proc load_hierachy {dir} {
  foreach f [glob -nocomplain -dir $dir *] {
    if {$::O(limit) && $::nRow>=$::O(limit)} break
    if {[file isdir $f]} {
      load_hierachy $f
    } else {
      db eval { INSERT INTO t1 VALUES($f, loadfile($f)) }
      incr ::nRow
    }
  }
}

proc usage {} {
  puts stderr "Usage: $::argv0 ?SWITCHES? DATABASE PATH"
  puts stderr ""
  puts stderr "Switches are:"
  puts stderr "  -fts4     (use fts4 instead of fts5)"
  exit 1
}

set O(vtab)   fts5
set O(tok)    ""
set O(limit)  0

if {[llength $argv]<2} usage
for {set i 0} {$i < [llength $argv]-2} {incr i} {
  set arg [lindex $argv $i]
  switch -- [lindex $argv $i] {
    -fts4 {
      set O(vtab) fts4
    }

    -fts5 {
      set O(vtab) fts5
    }

    -porter {
      set O(tok) ", tokenize=porter"
    }

    -limit {
      incr i
      set O(limit) [lindex $argv $i]
    }

    default {
      usage
    }
  }
}

sqlite3 db [lindex $argv end-1]
db func loadfile loadfile

db transaction {
  db eval "CREATE VIRTUAL TABLE t1 USING $O(vtab) (path, content$O(tok))"
  load_hierachy [lindex $argv end]
}