/[pcre]/code/trunk/pcre_dfa_exec.c
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Diff of /code/trunk/pcre_dfa_exec.c

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revision 974 by ph10, Thu Apr 19 17:30:38 2012 UTC revision 975 by ph10, Sat Jun 2 11:03:06 2012 UTC
# Line 573  for (;;) Line 573  for (;;)
573    int clen, dlen;    int clen, dlen;
574    unsigned int c, d;    unsigned int c, d;
575    int forced_fail = 0;    int forced_fail = 0;
576    BOOL partial_newline = FALSE;    BOOL partial_newline = FALSE;
577    BOOL could_continue = reset_could_continue;    BOOL could_continue = reset_could_continue;
578    reset_could_continue = FALSE;    reset_could_continue = FALSE;
579    
580    /* Make the new state list into the active state list and empty the    /* Make the new state list into the active state list and empty the
581    new state list. */    new state list. */
582    
# Line 645  for (;;) Line 645  for (;;)
645    
646      /* A negative offset is a special case meaning "hold off going to this      /* A negative offset is a special case meaning "hold off going to this
647      (negated) state until the number of characters in the data field have      (negated) state until the number of characters in the data field have
648      been skipped". If the could_continue flag was passed over from a previous      been skipped". If the could_continue flag was passed over from a previous
649      state, arrange for it to passed on. */      state, arrange for it to passed on. */
650    
651      if (state_offset < 0)      if (state_offset < 0)
# Line 695  for (;;) Line 695  for (;;)
695      permitted.      permitted.
696    
697      We also use this mechanism for opcodes such as OP_TYPEPLUS that take an      We also use this mechanism for opcodes such as OP_TYPEPLUS that take an
698      argument that is not a data character - but is always one byte long because      argument that is not a data character - but is always one byte long because
699      the values are small. We have to take special action to deal with  \P, \p,      the values are small. We have to take special action to deal with  \P, \p,
700      \H, \h, \V, \v and \X in this case. To keep the other cases fast, convert      \H, \h, \V, \v and \X in this case. To keep the other cases fast, convert
701      these ones to new opcodes. */      these ones to new opcodes. */
# Line 894  for (;;) Line 894  for (;;)
894        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
895        case OP_ANY:        case OP_ANY:
896        if (clen > 0 && !IS_NEWLINE(ptr))        if (clen > 0 && !IS_NEWLINE(ptr))
897          {          {
898          if (ptr + 1 >= md->end_subject &&          if (ptr + 1 >= md->end_subject &&
899              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
900              NLBLOCK->nltype == NLTYPE_FIXED &&              NLBLOCK->nltype == NLTYPE_FIXED &&
901              NLBLOCK->nllen == 2 &&              NLBLOCK->nllen == 2 &&
902              c == NLBLOCK->nl[0])              c == NLBLOCK->nl[0])
903            {            {
904            could_continue = partial_newline = TRUE;            could_continue = partial_newline = TRUE;
905            }            }
906          else          else
907            {            {
908            ADD_NEW(state_offset + 1, 0);            ADD_NEW(state_offset + 1, 0);
909            }            }
910          }          }
911        break;        break;
912    
# Line 938  for (;;) Line 938  for (;;)
938          else if (ptr + 1 >= md->end_subject &&          else if (ptr + 1 >= md->end_subject &&
939                   (md->moptions & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) != 0 &&                   (md->moptions & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) != 0 &&
940                   NLBLOCK->nltype == NLTYPE_FIXED &&                   NLBLOCK->nltype == NLTYPE_FIXED &&
941                   NLBLOCK->nllen == 2 &&                   NLBLOCK->nllen == 2 &&
942                   c == NLBLOCK->nl[0])                   c == NLBLOCK->nl[0])
943            {            {
944            if ((md->moptions & PCRE_PARTIAL_HARD) != 0)            if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
945              {              {
946              reset_could_continue = TRUE;              reset_could_continue = TRUE;
947              ADD_NEW_DATA(-(state_offset + 1), 0, 1);              ADD_NEW_DATA(-(state_offset + 1), 0, 1);
948              }              }
949            else could_continue = partial_newline = TRUE;            else could_continue = partial_newline = TRUE;
950            }            }
951          }          }
952        break;        break;
953    
# Line 963  for (;;) Line 963  for (;;)
963          else if (ptr + 1 >= md->end_subject &&          else if (ptr + 1 >= md->end_subject &&
964                   (md->moptions & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) != 0 &&                   (md->moptions & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) != 0 &&
965                   NLBLOCK->nltype == NLTYPE_FIXED &&                   NLBLOCK->nltype == NLTYPE_FIXED &&
966                   NLBLOCK->nllen == 2 &&                   NLBLOCK->nllen == 2 &&
967                   c == NLBLOCK->nl[0])                   c == NLBLOCK->nl[0])
968            {            {
969            if ((md->moptions & PCRE_PARTIAL_HARD) != 0)            if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
970              {              {
971              reset_could_continue = TRUE;              reset_could_continue = TRUE;
972              ADD_NEW_DATA(-(state_offset + 1), 0, 1);              ADD_NEW_DATA(-(state_offset + 1), 0, 1);
973              }              }
974            else could_continue = partial_newline = TRUE;            else could_continue = partial_newline = TRUE;
975            }            }
976          }          }
977        else if (IS_NEWLINE(ptr))        else if (IS_NEWLINE(ptr))
978          { ADD_ACTIVE(state_offset + 1, 0); }          { ADD_ACTIVE(state_offset + 1, 0); }
# Line 1138  for (;;) Line 1138  for (;;)
1138          if (d == OP_ANY && ptr + 1 >= md->end_subject &&          if (d == OP_ANY && ptr + 1 >= md->end_subject &&
1139              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
1140              NLBLOCK->nltype == NLTYPE_FIXED &&              NLBLOCK->nltype == NLTYPE_FIXED &&
1141              NLBLOCK->nllen == 2 &&              NLBLOCK->nllen == 2 &&
1142              c == NLBLOCK->nl[0])              c == NLBLOCK->nl[0])
1143            {            {
1144            could_continue = partial_newline = TRUE;            could_continue = partial_newline = TRUE;
1145            }            }
1146          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1147              (c < 256 &&              (c < 256 &&
1148                (d != OP_ANY || !IS_NEWLINE(ptr)) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
# Line 1169  for (;;) Line 1169  for (;;)
1169          if (d == OP_ANY && ptr + 1 >= md->end_subject &&          if (d == OP_ANY && ptr + 1 >= md->end_subject &&
1170              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
1171              NLBLOCK->nltype == NLTYPE_FIXED &&              NLBLOCK->nltype == NLTYPE_FIXED &&
1172              NLBLOCK->nllen == 2 &&              NLBLOCK->nllen == 2 &&
1173              c == NLBLOCK->nl[0])              c == NLBLOCK->nl[0])
1174            {            {
1175            could_continue = partial_newline = TRUE;            could_continue = partial_newline = TRUE;
1176            }            }
1177          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1178              (c < 256 &&              (c < 256 &&
1179                (d != OP_ANY || !IS_NEWLINE(ptr)) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
# Line 1199  for (;;) Line 1199  for (;;)
1199          if (d == OP_ANY && ptr + 1 >= md->end_subject &&          if (d == OP_ANY && ptr + 1 >= md->end_subject &&
1200              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
1201              NLBLOCK->nltype == NLTYPE_FIXED &&              NLBLOCK->nltype == NLTYPE_FIXED &&
1202              NLBLOCK->nllen == 2 &&              NLBLOCK->nllen == 2 &&
1203              c == NLBLOCK->nl[0])              c == NLBLOCK->nl[0])
1204            {            {
1205            could_continue = partial_newline = TRUE;            could_continue = partial_newline = TRUE;
1206            }            }
1207          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1208              (c < 256 &&              (c < 256 &&
1209                (d != OP_ANY || !IS_NEWLINE(ptr)) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
# Line 1227  for (;;) Line 1227  for (;;)
1227          if (d == OP_ANY && ptr + 1 >= md->end_subject &&          if (d == OP_ANY && ptr + 1 >= md->end_subject &&
1228              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
1229              NLBLOCK->nltype == NLTYPE_FIXED &&              NLBLOCK->nltype == NLTYPE_FIXED &&
1230              NLBLOCK->nllen == 2 &&              NLBLOCK->nllen == 2 &&
1231              c == NLBLOCK->nl[0])              c == NLBLOCK->nl[0])
1232            {            {
1233            could_continue = partial_newline = TRUE;            could_continue = partial_newline = TRUE;
1234            }            }
1235          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1236              (c < 256 &&              (c < 256 &&
1237                (d != OP_ANY || !IS_NEWLINE(ptr)) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
# Line 1256  for (;;) Line 1256  for (;;)
1256          if (d == OP_ANY && ptr + 1 >= md->end_subject &&          if (d == OP_ANY && ptr + 1 >= md->end_subject &&
1257              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&              (md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
1258              NLBLOCK->nltype == NLTYPE_FIXED &&              NLBLOCK->nltype == NLTYPE_FIXED &&
1259              NLBLOCK->nllen == 2 &&              NLBLOCK->nllen == 2 &&
1260              c == NLBLOCK->nl[0])              c == NLBLOCK->nl[0])
1261            {            {
1262            could_continue = partial_newline = TRUE;            could_continue = partial_newline = TRUE;
1263            }            }
1264          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1265              (c < 256 &&              (c < 256 &&
1266                (d != OP_ANY || !IS_NEWLINE(ptr)) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
# Line 1909  for (;;) Line 1909  for (;;)
1909            ncount++;            ncount++;
1910            nptr += ndlen;            nptr += ndlen;
1911            }            }
1912          if (nptr >= end_subject && (md->moptions & PCRE_PARTIAL_HARD) != 0)          if (nptr >= end_subject && (md->moptions & PCRE_PARTIAL_HARD) != 0)
1913              reset_could_continue = TRUE;              reset_could_continue = TRUE;
1914          if (++count >= GET2(code, 1))          if (++count >= GET2(code, 1))
1915            { ADD_NEW_DATA(-(state_offset + 2 + IMM2_SIZE), 0, ncount); }            { ADD_NEW_DATA(-(state_offset + 2 + IMM2_SIZE), 0, ncount); }
1916          else          else
# Line 2124  for (;;) Line 2124  for (;;)
2124            ncount++;            ncount++;
2125            nptr += nclen;            nptr += nclen;
2126            }            }
2127          if (nptr >= end_subject && (md->moptions & PCRE_PARTIAL_HARD) != 0)          if (nptr >= end_subject && (md->moptions & PCRE_PARTIAL_HARD) != 0)
2128              reset_could_continue = TRUE;              reset_could_continue = TRUE;
2129          ADD_NEW_DATA(-(state_offset + 1), 0, ncount);          ADD_NEW_DATA(-(state_offset + 1), 0, ncount);
2130          }          }
2131        break;        break;
# Line 2151  for (;;) Line 2151  for (;;)
2151          break;          break;
2152    
2153          case 0x000d:          case 0x000d:
2154          if (ptr + 1 >= end_subject)          if (ptr + 1 >= end_subject)
2155            {            {
2156            ADD_NEW(state_offset + 1, 0);            ADD_NEW(state_offset + 1, 0);
2157            if ((md->moptions & PCRE_PARTIAL_HARD) != 0)            if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
2158              reset_could_continue = TRUE;              reset_could_continue = TRUE;
2159            }            }
2160          else if (ptr[1] == 0x0a)          else if (ptr[1] == 0x0a)
2161            {            {
2162            ADD_NEW_DATA(-(state_offset + 1), 0, 1);            ADD_NEW_DATA(-(state_offset + 1), 0, 1);
2163            }            }
2164          else          else
2165            {            {
2166            ADD_NEW(state_offset + 1, 0);            ADD_NEW(state_offset + 1, 0);
2167            }            }
2168          break;          break;
2169          }          }
2170        break;        break;
# Line 2277  for (;;) Line 2277  for (;;)
2277    
2278        case OP_NOTI:        case OP_NOTI:
2279        if (clen > 0)        if (clen > 0)
2280          {          {
2281          unsigned int otherd;          unsigned int otherd;
2282  #ifdef SUPPORT_UTF  #ifdef SUPPORT_UTF
2283          if (utf && d >= 128)          if (utf && d >= 128)
# Line 2291  for (;;) Line 2291  for (;;)
2291          otherd = TABLE_GET(d, fcc, d);          otherd = TABLE_GET(d, fcc, d);
2292          if (c != d && c != otherd)          if (c != d && c != otherd)
2293            { ADD_NEW(state_offset + dlen + 1, 0); }            { ADD_NEW(state_offset + dlen + 1, 0); }
2294          }          }
2295        break;        break;
2296    
2297        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
# Line 3047  for (;;) Line 3047  for (;;)
3047    
3048    The "could_continue" variable is true if a state could have continued but    The "could_continue" variable is true if a state could have continued but
3049    for the fact that the end of the subject was reached. */    for the fact that the end of the subject was reached. */
3050    
3051    if (new_count <= 0)    if (new_count <= 0)
3052      {      {
3053      if (rlevel == 1 &&                               /* Top level, and */      if (rlevel == 1 &&                               /* Top level, and */
# Line 3064  for (;;) Line 3064  for (;;)
3064            (                                          /* or ... */            (                                          /* or ... */
3065            ptr >= end_subject &&                /* End of subject and */            ptr >= end_subject &&                /* End of subject and */
3066            ptr > md->start_used_ptr)            /* Inspected non-empty string */            ptr > md->start_used_ptr)            /* Inspected non-empty string */
3067            )            )
3068          )          )
3069        {        {
3070        if (offsetcount >= 2)        if (offsetcount >= 2)
3071          {          {
# Line 3172  if (re->magic_number != MAGIC_NUMBER) Line 3172  if (re->magic_number != MAGIC_NUMBER)
3172      PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;      PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;
3173  if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;  if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
3174    
3175  /* If restarting after a partial match, do some sanity checks on the contents  /* If restarting after a partial match, do some sanity checks on the contents
3176  of the workspace. */  of the workspace. */
3177    
3178  if ((options & PCRE_DFA_RESTART) != 0)  if ((options & PCRE_DFA_RESTART) != 0)
3179    {    {
3180    if ((workspace[0] & (-2)) != 0 || workspace[1] < 1 ||    if ((workspace[0] & (-2)) != 0 || workspace[1] < 1 ||
3181      workspace[1] > (wscount - 2)/INTS_PER_STATEBLOCK)      workspace[1] > (wscount - 2)/INTS_PER_STATEBLOCK)
3182        return PCRE_ERROR_DFA_BADRESTART;        return PCRE_ERROR_DFA_BADRESTART;
3183    }    }
3184    
3185  /* Set up study, callout, and table data */  /* Set up study, callout, and table data */
3186    
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