499 lines
10 KiB
C++
499 lines
10 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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// ------------------------------------------------------------------
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// The Goldware Library
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// Copyright (C) 1990-1999 Odinn Sorensen
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// Copyright (C) 1999-2000 Alexander S. Aganichev
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// ------------------------------------------------------------------
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free
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// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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// MA 02111-1307, USA
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// ------------------------------------------------------------------
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// $Id$
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// ------------------------------------------------------------------
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// GoldED nodelist indexing.
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// ------------------------------------------------------------------
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#include <gcrcall.h>
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#include <gfilutil.h>
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#include <gmemdbg.h>
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#include <gstrall.h>
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#include <gftnnlge.h>
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// ------------------------------------------------------------------
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static char* make_goldnode_name(char* inp) {
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if(*inp == NUL)
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return inp;
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char buf[100];
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char* p;
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char* q;
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// Convert underlines to spaces
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p = inp;
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while(*p)
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if(*(p++) == '_')
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*(p-1) = ' ';
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// Strip leading spaces
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p = inp;
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while(isspace(*p))
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p++;
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q = &inp[strlen(p)-1];
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// Strip trailing spaces
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while(isspace(*q))
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*q-- = NUL;
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// Search for last space or point
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while(*q != ' ' and *q != '.' and q > p)
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q--;
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// If last char is a point, find last space instead
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if(*(q+1) == 0)
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while(*q != ' ' and q > p)
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q--;
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// Exchange last name and first name(s)
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if(p != q) {
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strcpy(stpcpy(buf, q+1), ", ");
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*(q+(*q == '.' ? 1 : 0)) = NUL;
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strcat(buf, p);
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strcpy(inp, buf);
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}
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struplow(inp);
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return inp;
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::fetchdata() {
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int currfileno = (int)((current.pos >> 24) & 0xFF);
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// currfileno == 0xFF: Entry is taken from a userlist, no nodelist available
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if(currfileno != lastfileno) {
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if(fhx != -1)
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::close(fhx);
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if(currfileno != 0xff) {
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fhx = ::sopen(nodelist[currfileno].filename, O_RDONLY|O_BINARY, SH_DENYNO, S_STDRD);
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lastfileno = currfileno;
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} else {
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fhx = -1;
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lastfileno = -1;
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}
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}
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strunrevname(data.name, current.name);
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*data.status = NUL;
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*data.system = NUL;
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*data.location = NUL;
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*data.phone = NUL;
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*data.flags = NUL;
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*data.baud = NUL;
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if(fhx != -1) {
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char buf[256];
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buf[255] = NUL;
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lseekset(fhx, current.pos & 0x00FFFFFFL);
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read(fhx, buf, 255);
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if(*buf != ';') {
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char* end = strchr(buf, '\r');
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if(end)
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*end = NUL;
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data.unpack(buf);
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}
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}
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data.addr = current.addr;
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data.addr.make_string(data.address);
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::getnode() {
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#ifdef DEBUG
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printf("<%05ld> ", node);
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#endif
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long seekto = node - 1L;
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if(not namebrowse) {
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if(index32) {
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lseekset(fha, seekto*(long)sizeof(dword));
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dword nseekto;
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read(fha, &nseekto, sizeof(dword));
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seekto = nseekto;
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}
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else {
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lseekset(fha, seekto*(long)sizeof(word));
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word nseekto;
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read(fha, &nseekto, sizeof(word));
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seekto = nseekto;
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}
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}
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lseekset(fhn, seekto*(long)sizeof(_GEIdx));
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read(fhn, ¤t, sizeof(_GEIdx));
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}
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// ------------------------------------------------------------------
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int ftn_golded_nodelist_index::namecmp() const {
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#ifdef DEBUG
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printf("[%s] [%s] ", searchname, current.name);
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#endif
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const char* a = searchname;
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const char* b = current.name;
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int n = 1;
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int d;
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while(1) {
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d = g_tolower(*a) - g_tolower(*b);
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if((d != 0) or (*a == NUL) or (*b == NUL))
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break;
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a++;
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b++;
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n++;
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}
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return d != 0 ? (d > 0 ? n : -n) : 0;
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}
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// ------------------------------------------------------------------
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int ftn_golded_nodelist_index::addrcmp() const {
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#ifdef DEBUG
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printf("[%d:%d/%d.%d] [%d:%d/%d.%d] ",
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searchaddr.zone, searchaddr.net, searchaddr.node, searchaddr.point,
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current.addr.zone, current.addr.net, current.addr.node, current.addr.point
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);
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#endif
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return searchaddr.compare(current.addr);
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::searchfirst() {
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if(maxnode) {
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long mid;
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long left = 0;
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long right = maxnode;
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int diff = 0;
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int prevdiff;
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do {
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mid = (left+right)/2;
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node = mid + 1;
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getnode();
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prevdiff = diff;
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diff = namebrowse ? namecmp() : addrcmp();
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#ifdef DEBUG
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printf("(%d)\n", diff);
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#endif
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if(diff < 0)
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right = mid - 1;
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else if(diff > 0)
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left = mid + 1;
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else {
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exactmatch = true;
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fetchdata();
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return true;
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}
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} while(left < right);
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if(left < maxnode) {
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node = left + 1;
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getnode();
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prevdiff = diff;
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diff = namebrowse ? namecmp() : addrcmp();
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#ifdef DEBUG
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printf("(%d)\n", diff);
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#endif
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if(diff == 0) {
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exactmatch = true;
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fetchdata();
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return true;
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}
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}
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if(absolute(prevdiff) > absolute(diff))
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previous();
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else {
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prevdiff = diff;
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if(next()) {
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diff = namebrowse ? namecmp() : addrcmp();
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#ifdef DEBUG
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printf("(%d)\n", diff);
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#endif
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if(absolute(prevdiff) >= absolute(diff))
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previous();
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}
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else
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fetchdata();
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}
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}
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exactmatch = false;
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return false;
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::search() {
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if(searchfirst()) {
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// Search backwards until first exact match is found
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while(previous()) {
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if(not exactmatch) {
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next();
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break;
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}
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}
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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ftn_golded_nodelist_index::ftn_golded_nodelist_index() {
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fha = fhn = fhx = -1;
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nodelist = NULL;
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nodelists = 0;
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lastfileno = -1;
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isopen = false;
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}
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// ------------------------------------------------------------------
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ftn_golded_nodelist_index::~ftn_golded_nodelist_index() {
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if(isopen)
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close();
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::open() {
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if(isopen)
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close();
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fha = ::sopen(AddPath(nlpath, "goldnode.gxa"), O_RDONLY|O_BINARY, SH_DENYNO, S_STDRD);
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if(fha == -1) {
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close();
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return false;
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}
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fhn = ::sopen(AddPath(nlpath, "goldnode.gxn"), O_RDONLY|O_BINARY, SH_DENYNO, S_STDRD);
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if(fhn == -1) {
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close();
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return false;
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}
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FILE* fp = fopen(AddPath(nlpath, "goldnode.gxl"), "rt");
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if(fp == NULL) {
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close();
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return false;
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}
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// Read the list index
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char buf[256];
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nodelists = 0;
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while(fgets(buf, sizeof(buf), fp)) {
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nodelist = (fstamp*)throw_realloc(nodelist, (nodelists+1)*sizeof(fstamp));
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char* key;
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char* val=buf;
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getkeyval(&key, &val);
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strcpy(nodelist[nodelists].filename, key);
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MapPath(nodelist[nodelists].filename);
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nodelist[nodelists].stamp = atol(val);
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nodelists++;
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}
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fclose(fp);
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maxnode = filelength(fha) / sizeof(word);
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if(filelength(fhn) / sizeof(_GEIdx) < (size_t)maxnode) {
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maxnode = filelength(fha) / sizeof(dword);
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index32 = true;
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}
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else
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index32 = false;
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isopen = true;
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return true;
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::close() {
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throw_release(nodelist);
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nodelists = 0;
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lastfileno = -1;
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if(fha != -1) ::close(fha); fha = -1;
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if(fhn != -1) ::close(fhn); fhn = -1;
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if(fhx != -1) ::close(fhx); fhx = -1;
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isopen = false;
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::find(const char* lookup_name) {
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namebrowse = true;
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make_goldnode_name(strcpy(searchname, lookup_name));
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return search();
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::find(const ftn_addr& addr) {
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namebrowse = false;
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searchaddr = addr;
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return search();
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::previous() {
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if(node > 1) {
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node--;
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getnode();
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fetchdata();
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compare();
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool ftn_golded_nodelist_index::next() {
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if(node < maxnode) {
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node++;
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getnode();
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fetchdata();
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compare();
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::first() {
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node = 1;
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getnode();
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fetchdata();
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compare();
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::last() {
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node = maxnode;
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getnode();
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fetchdata();
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compare();
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::push_state() {
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statenode = node;
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}
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// ------------------------------------------------------------------
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void ftn_golded_nodelist_index::pop_state() {
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node = statenode;
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getnode();
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fetchdata();
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compare();
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}
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// ------------------------------------------------------------------
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const char* ftn_golded_nodelist_index::index_name() const {
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#if defined(__UNIX__)
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return namebrowse ? "goldnode.gxn" : "goldnode.gxa";
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#else
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return namebrowse ? "GOLDNODE.GXN" : "GOLDNODE.GXA";
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#endif
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}
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// ------------------------------------------------------------------
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const char* ftn_golded_nodelist_index::nodelist_name() const {
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if(lastfileno == -1)
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return index_name();
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const char* ptr = strrchr(nodelist[lastfileno].filename, '\\');
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return ptr ? ptr+1 : nodelist[lastfileno].filename;
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}
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// ------------------------------------------------------------------
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