X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=dict%2Fscan.c;h=7236cb0e352ff63c17e4def48ac432303640a1d2;hp=fc80b6f851736d446cdc1a7599242bfba5cb54d0;hb=5437b50633032595afe6f87dc0f989bc92a5aea8;hpb=34191838c4bcf0e1149dde9ea56ceb2a2ff6aebf diff --git a/dict/scan.c b/dict/scan.c index fc80b6f..7236cb0 100644 --- a/dict/scan.c +++ b/dict/scan.c @@ -1,19 +1,26 @@ -/* - * Copyright (C) 1994, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: scan.c,v $ - * Revision 1.3 1995-10-06 11:06:07 adam - * Bug fixes. - * - * Revision 1.2 1995/10/06 10:43:16 adam - * Minor changes. - * - * Revision 1.1 1995/10/06 09:04:18 adam - * First version of scan. - * - */ +/* $Id: scan.c,v 1.16 2004-11-19 10:26:55 heikki Exp $ + Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002 + Index Data Aps + +This file is part of the Zebra server. + +Zebra 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, or (at your option) any later +version. + +Zebra 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 Zebra; see the file LICENSE.zebra. If not, write to the +Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. +*/ + + #include #include #include @@ -21,9 +28,9 @@ #include -void dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, - int start, int *count, - int (*userfunc)(Dict_char *, const char *, int pos), +int dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, + int start, int *count, void *client, + int (*userfunc)(char *, const char *, int, void *), int dir) { int lo, hi, j; @@ -33,11 +40,16 @@ void dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, dict_bf_readp (dict->dbf, ptr, &p); hi = DICT_nodir(p)-1; - if (start == 0 && dir == -1) - lo = hi; - else + if (start != -1) lo = start; - indxp = (short*) ((char*) p+DICT_pagesize(dict)-sizeof(short)); + else + { + if (dir == -1) + lo = hi; + else + lo = 0; + } + indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short)); while (lo <= hi && lo >= 0 && *count > 0) { @@ -51,7 +63,8 @@ void dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, for (j = 0; info[j] != DICT_EOS; j++) str[pos+j] = info[j]; str[pos+j] = DICT_EOS; - (*userfunc)(str, info+(j+1)*sizeof(Dict_char), *count * dir); + (*userfunc)((char*) str, info+(j+1)*sizeof(Dict_char), + *count * dir, client); --(*count); } else @@ -71,21 +84,28 @@ void dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, if (info[sizeof(Dict_ptr)+sizeof(Dict_char)]) { str[pos+1] = DICT_EOS; - (*userfunc)(str, info+sizeof(Dict_ptr)+sizeof(Dict_char), - *count * dir); + if ((*userfunc)((char*) str, + info+sizeof(Dict_ptr)+sizeof(Dict_char), + *count * dir, client)) + return 1; --(*count); } if (*count > 0 && subptr) - dict_scan_trav (dict, subptr, pos+1, str, 0, count, - userfunc, dir); + { + dict_scan_trav (dict, subptr, pos+1, str, -1, count, + client, userfunc, dir); + dict_bf_readp (dict->dbf, ptr, &p); + indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short)); + } } lo += dir; } + return 0; } - + int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, - int *before, int *after, - int (*userfunc)(Dict_char *, const char *, int)) + int *before, int *after, void *client, + int (*userfunc)(char *, const char *, int, void *)) { int cmp = 0, mid, lo, hi; void *p; @@ -93,9 +113,11 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, char *info; dict_bf_readp (dict->dbf, ptr, &p); + if (!p) + return 0; mid = lo = 0; hi = DICT_nodir(p)-1; - indxp = (short*) ((char*) p+DICT_pagesize(dict)-sizeof(short)); + indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short)); while (lo <= hi) { mid = (lo+hi)/2; @@ -108,9 +130,14 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, cmp = dict_strcmp ((Dict_char*) info, str + pos); if (!cmp) { - (*userfunc)(str, info+(dict_strlen(info)+1)*sizeof(Dict_char) - , *after); - --(*after); + if (*after) + { + (*userfunc)((char *) str, info+ + (dict_strlen((Dict_char*) info)+1) + *sizeof(Dict_char), + *after, client); + --(*after); + } break; } } @@ -133,18 +160,26 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, { if (info[sizeof(Dict_ptr)+sizeof(Dict_char)]) { - (*userfunc)(str, - info+sizeof(Dict_ptr)+sizeof(Dict_char), - *after); - --(*after); + if (*after) + { + (*userfunc)((char*) str, + info+sizeof(Dict_ptr)+ + sizeof(Dict_char), + *after, client); + --(*after); + } } - if (*after > 0 && subptr) - dict_scan_trav (dict, subptr, pos+1, str, 0, - after, userfunc, 1); + if (*after && subptr) + if (dict_scan_trav (dict, subptr, pos+1, str, -1, + after, client, userfunc, 1)) + return 1; + } + else if (subptr) + { + if (dict_scan_r (dict, subptr, pos+1, str, before, after, + client, userfunc)) + return 1; } - else if (*after > 0 && subptr) - dict_scan_r (dict, subptr, pos+1, str, before, after, - userfunc); break; } } @@ -156,19 +191,29 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str, if (lo>hi && cmp < 0) ++mid; if (*after) - dict_scan_trav (dict, ptr, pos, str, cmp ? mid : mid+1, after, - userfunc, 1); - if (*before && mid > 1) - dict_scan_trav (dict, ptr, pos, str, mid-1, before, - userfunc, -1); + if (dict_scan_trav (dict, ptr, pos, str, cmp ? mid : mid+1, after, + client, userfunc, 1)) + return 1; + if (*before && mid > 0) + if (dict_scan_trav (dict, ptr, pos, str, mid-1, before, + client, userfunc, -1)) + return 1; return 0; } -int dict_scan (Dict dict, Dict_char *str, int *before, int *after, - int (*f)(Dict_char *name, const char *info, int pos)) +int dict_scan (Dict dict, char *str, int *before, int *after, void *client, + int (*f)(char *name, const char *info, int pos, void *client)) { int i; - i = dict_scan_r (dict, 1, 0, str, before, after, f); - return i; -} + yaz_log (YLOG_DEBUG, "dict_scan"); + for (i = 0; str[i]; i++) + { + yaz_log (YLOG_DEBUG, " %3d %c", str[i], + (str[i] > ' ' && str[i] < 127) ? str[i] : '?'); + } + if (!dict->head.root) + return 0; + return dict_scan_r (dict, dict->head.root, 0, (Dict_char *) str, + before, after, client, f); +}