mirror of
https://github.com/libretro/scummvm.git
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4441ca4b3e
- Rewrote the sci_opcodes enum so that it's easier to read - Made the engine error out if data is sent to an invalid selector (which is a fatal condition) svn-id: r41069
665 lines
18 KiB
C++
665 lines
18 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program 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
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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// Main vocabulary support functions and word lookup
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#include "sci/vocabulary.h"
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#include "sci/resource.h"
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#include "sci/engine/state.h"
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#include "sci/engine/kernel.h"
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#include "sci/console.h"
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namespace Sci {
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#if 0
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/**
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* Vocabulary class names.
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* These strange names were taken from an SCI01 interpreter.
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*/
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const char *class_names[] = {"",
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"",
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"conj", // conjunction
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"ass", // ?
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"pos", // preposition ?
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"art", // article
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"adj", // adjective
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"pron", // pronoun
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"noun", // noun
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"auxv", // auxillary verb
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"adv", // adverb
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"verb", // verb
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"",
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"",
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"",
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""
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};
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int *vocab_get_classes(ResourceManager *resmgr, int* count) {
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Resource* r;
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int *c;
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unsigned int i;
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if ((r = resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_CLASSES, 0)) == NULL)
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return 0;
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c = (int *)malloc(sizeof(int) * r->size / 2);
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for (i = 2; i < r->size; i += 4) {
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c[i/4] = READ_LE_UINT16(r->data + i);
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}
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*count = r->size / 4;
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return c;
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}
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int vocab_get_class_count(ResourceManager *resmgr) {
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Resource* r;
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if ((r = resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_CLASSES, 0)) == 0)
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return 0;
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return r->size / 4;
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}
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#endif
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Vocabulary::Vocabulary(ResourceManager *resmgr, bool isOldSci0) : _resmgr(resmgr), _isOldSci0(isOldSci0) {
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_parserRules = NULL;
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_vocabVersion = kVocabularySCI0;
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memset(&_selectorMap, 0, sizeof(_selectorMap)); // FIXME: Remove this once/if we C++ify selector_map_t
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debug(2, "Initializing vocabulary");
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if (_resmgr->_sciVersion < SCI_VERSION_01_VGA && getParserWords()) {
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getSuffixes();
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if (getBranches())
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// Now build a GNF grammar out of this
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_parserRules = buildGNF();
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} else {
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debug(2, "Assuming that this game does not use a parser.");
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_parserRules = NULL;
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}
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getOpcodes();
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if (!getSelectorNames()) {
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error("Vocabulary: Could not retrieve selector names");
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}
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// Map a few special selectors for later use
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mapSelectors();
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getKernelNames();
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}
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Vocabulary::~Vocabulary() {
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freeRuleList(_parserRules);
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_parserWords.clear();
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_selectorNames.clear();
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_opcodes.clear();
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_kernelNames.clear();
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_parserBranches.clear();
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freeSuffixes();
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}
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bool Vocabulary::getSelectorNames() {
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int count;
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Resource *r = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SNAMES, 0);
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if (!r) // No such resource?
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return false;
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count = READ_LE_UINT16(r->data) + 1; // Counter is slightly off
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for (int i = 0; i < count; i++) {
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int offset = READ_LE_UINT16(r->data + 2 + i * 2);
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int len = READ_LE_UINT16(r->data + offset);
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Common::String tmp((const char *)r->data + offset + 2, len);
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_selectorNames.push_back(tmp);
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// Early SCI versions used the LSB in the selector ID as a read/write
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// toggle. To compensate for that, we add every selector name twice.
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if (_isOldSci0)
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_selectorNames.push_back(tmp);
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}
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return true;
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}
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bool Vocabulary::getOpcodes() {
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int count, i = 0;
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Resource* r = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_OPCODES, 0);
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_opcodes.clear();
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// if the resource couldn't be loaded, leave
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if (r == NULL) {
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warning("unable to load vocab.%03d", VOCAB_RESOURCE_OPCODES);
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return false;
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}
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count = READ_LE_UINT16(r->data);
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_opcodes.resize(count);
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for (i = 0; i < count; i++) {
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int offset = READ_LE_UINT16(r->data + 2 + i * 2);
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int len = READ_LE_UINT16(r->data + offset) - 2;
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_opcodes[i].type = READ_LE_UINT16(r->data + offset + 2);
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// QFG3 has empty opcodes
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_opcodes[i].name = len > 0 ? Common::String((char *)r->data + offset + 4, len) : "Dummy";
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#if 1 //def VOCABULARY_DEBUG
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printf("Opcode %02X: %s, %d\n", i, _opcodes[i].name.c_str(), _opcodes[i].type);
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#endif
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}
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return true;
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}
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bool Vocabulary::getParserWords() {
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char currentword[256] = ""; // They're not going to use words longer than 255 ;-)
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int currentwordpos = 0;
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// First try to load the SCI0 vocab resource.
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Resource *resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI0_MAIN_VOCAB, 0);
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if (!resource) {
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warning("SCI0: Could not find a main vocabulary, trying SCI01");
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI1_MAIN_VOCAB, 0);
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_vocabVersion = kVocabularySCI1;
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}
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if (!resource) {
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warning("SCI1: Could not find a main vocabulary");
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return false; // NOT critical: SCI1 games and some demos don't have one!
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}
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unsigned int seeker;
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if (_vocabVersion == kVocabularySCI1)
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seeker = 255 * 2; // vocab.900 starts with 255 16-bit pointers which we don't use
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else
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seeker = 26 * 2; // vocab.000 starts with 26 16-bit pointers which we don't use
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if (resource->size < seeker) {
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warning("Invalid main vocabulary encountered: Too small");
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return false;
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// Now this ought to be critical, but it'll just cause parse() and said() not to work
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}
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_parserWords.clear();
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while (seeker < resource->size) {
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byte c;
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currentwordpos = resource->data[seeker++]; // Parts of previous words may be re-used
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if (_vocabVersion == kVocabularySCI1) {
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c = 1;
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while (seeker < resource->size && currentwordpos < 255 && c) {
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c = resource->data[seeker++];
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currentword[currentwordpos++] = c;
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}
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if (seeker == resource->size) {
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warning("SCI1: Vocabulary not usable, disabling");
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_parserWords.clear();
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return false;
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}
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} else {
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do {
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c = resource->data[seeker++];
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currentword[currentwordpos++] = c & 0x7f; // 0x80 is used to terminate the string
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} while (c < 0x80);
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}
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currentword[currentwordpos] = 0;
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// Now decode class and group:
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c = resource->data[seeker + 1];
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ResultWord newWord;
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newWord._class = ((resource->data[seeker]) << 4) | ((c & 0xf0) >> 4);
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newWord._group = (resource->data[seeker + 2]) | ((c & 0x0f) << 8);
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// Add the word to the list
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_parserWords[currentword] = newWord;
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seeker += 3;
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}
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return true;
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}
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const char *Vocabulary::getAnyWordFromGroup(int group) {
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if (group == VOCAB_MAGIC_NUMBER_GROUP)
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return "{number}";
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for (WordMap::const_iterator i = _parserWords.begin(); i != _parserWords.end(); ++i)
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if (i->_value._group == group)
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return i->_key.c_str();
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return "{invalid}";
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}
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bool Vocabulary::getSuffixes() {
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// Determine if we can find a SCI1 suffix vocabulary first
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Resource* resource = NULL;
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if (_vocabVersion == kVocabularySCI0)
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI0_SUFFIX_VOCAB, 1);
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else
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI1_SUFFIX_VOCAB, 1);
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if (!resource)
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return false; // No vocabulary found
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unsigned int seeker = 1;
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while ((seeker < resource->size - 1) && (resource->data[seeker + 1] != 0xff)) {
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suffix_t suffix;
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suffix.alt_suffix = (const char *)resource->data + seeker;
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suffix.alt_suffix_length = strlen(suffix.alt_suffix);
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seeker += suffix.alt_suffix_length + 1; // Hit end of string
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suffix.class_mask = (int16)READ_BE_UINT16(resource->data + seeker);
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seeker += 2;
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// Beginning of next string - skip leading '*'
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seeker++;
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suffix.word_suffix = (const char *)resource->data + seeker;
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suffix.word_suffix_length = strlen(suffix.word_suffix);
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seeker += suffix.word_suffix_length + 1;
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suffix.result_class = (int16)READ_BE_UINT16(resource->data + seeker);
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seeker += 3; // Next entry
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_parserSuffixes.push_back(suffix);
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}
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return true;
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}
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void Vocabulary::freeSuffixes() {
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Resource* resource = NULL;
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if (_vocabVersion == kVocabularySCI0)
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI0_SUFFIX_VOCAB, 0);
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else
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI1_SUFFIX_VOCAB, 0);
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if (resource && resource->status == kResStatusLocked)
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_resmgr->unlockResource(resource, resource->number, kResourceTypeVocab);
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_parserSuffixes.clear();
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}
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bool Vocabulary::getBranches() {
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Resource *resource = NULL;
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if (_vocabVersion == kVocabularySCI0)
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI0_PARSE_TREE_BRANCHES, 0);
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else
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resource = _resmgr->findResource(kResourceTypeVocab, VOCAB_RESOURCE_SCI1_PARSE_TREE_BRANCHES, 0);
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_parserBranches.clear();
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if (!resource)
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return false; // No parser tree data found
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int branches_nr = resource->size / 20;
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if (branches_nr == 0) {
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warning("Parser tree data is empty");
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return false;
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}
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_parserBranches.resize(branches_nr);
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for (int i = 0; i < branches_nr; i++) {
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byte *base = resource->data + i * 20;
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_parserBranches[i].id = (int16)READ_LE_UINT16(base);
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for (int k = 0; k < 9; k++)
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_parserBranches[i].data[k] = READ_LE_UINT16(base + 2 + 2 * k);
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_parserBranches[i].data[9] = 0; // Always terminate
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}
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if (!_parserBranches[branches_nr - 1].id) // branch lists may be terminated by empty rules
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_parserBranches.remove_at(branches_nr - 1);
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return true;
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}
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ResultWord Vocabulary::lookupWord(const char *word, int word_len) {
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Common::String tempword(word, word_len);
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// Remove all dashes from tempword
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for (uint i = 0; i < tempword.size(); ) {
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if (tempword[i] == '-')
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tempword.deleteChar(i);
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else
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++i;
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}
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// Look it up:
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WordMap::iterator dict_word = _parserWords.find(tempword);
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// Match found? Return it!
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if (dict_word != _parserWords.end()) {
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return dict_word->_value;
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}
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// Now try all suffixes
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for (SuffixList::const_iterator suffix = _parserSuffixes.begin(); suffix != _parserSuffixes.end(); ++suffix)
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if (suffix->alt_suffix_length <= word_len) {
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int suff_index = word_len - suffix->alt_suffix_length;
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// Offset of the start of the suffix
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if (scumm_strnicmp(suffix->alt_suffix, word + suff_index, suffix->alt_suffix_length) == 0) { // Suffix matched!
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// Terminate word at suffix start position...:
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Common::String tempword2(word, MIN(word_len, suff_index));
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// ...and append "correct" suffix
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tempword2 += Common::String(suffix->word_suffix, suffix->word_suffix_length);
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dict_word = _parserWords.find(tempword2);
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if ((dict_word != _parserWords.end()) && (dict_word->_value._class & suffix->class_mask)) { // Found it?
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// Use suffix class
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ResultWord tmp = dict_word->_value;
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tmp._class = suffix->result_class;
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return tmp;
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}
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}
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}
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// No match so far? Check if it's a number.
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ResultWord retval = { -1, -1 };
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char *tester;
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if ((strtol(tempword.c_str(), &tester, 10) >= 0) && (*tester == '\0')) { // Do we have a complete number here?
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ResultWord tmp = { VOCAB_CLASS_NUMBER, VOCAB_MAGIC_NUMBER_GROUP };
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retval = tmp;
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}
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return retval;
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}
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void Vocabulary::decypherSaidBlock(byte *addr) {
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int nextitem;
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do {
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nextitem = *addr++;
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if (nextitem < 0xf0) {
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nextitem = nextitem << 8 | *addr++;
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sciprintf(" %s[%03x]", getAnyWordFromGroup(nextitem), nextitem);
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nextitem = 42; // Make sure that group 0xff doesn't abort
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} else switch (nextitem) {
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case 0xf0:
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sciprintf(" ,");
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break;
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case 0xf1:
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sciprintf(" &");
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break;
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case 0xf2:
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sciprintf(" /");
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break;
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case 0xf3:
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sciprintf(" (");
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break;
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case 0xf4:
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sciprintf(" )");
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break;
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case 0xf5:
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sciprintf(" [");
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break;
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case 0xf6:
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sciprintf(" ]");
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break;
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case 0xf7:
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sciprintf(" #");
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break;
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case 0xf8:
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sciprintf(" <");
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break;
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case 0xf9:
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sciprintf(" >");
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break;
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case 0xff:
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break;
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}
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} while (nextitem != 0xff);
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sciprintf("\n");
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}
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bool Vocabulary::tokenizeString(ResultWordList &retval, const char *sentence, char **error) {
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const char *lastword = sentence;
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int pos_in_sentence = 0;
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char c;
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int wordlen = 0;
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*error = NULL;
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do {
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c = sentence[pos_in_sentence++];
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if (isalnum(c) || (c == '-' && wordlen))
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++wordlen;
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// Continue on this word */
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// Words may contain a '-', but may not
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// start with one.
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else {
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if (wordlen) { // Finished a word?
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ResultWord lookup_result = lookupWord(lastword, wordlen);
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// Look it up
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if (lookup_result._class == -1) { // Not found?
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*error = (char *)calloc(wordlen + 1, 1);
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strncpy(*error, lastword, wordlen); // Set the offending word
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retval.clear();
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return false; // And return with error
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}
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// Copy into list
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retval.push_back(lookup_result);
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}
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lastword = sentence + pos_in_sentence;
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wordlen = 0;
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}
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} while (c); // Until terminator is hit
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return true;
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}
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void Vocabulary::printSuffixes() {
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char word_buf[256], alt_buf[256];
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Sci::Console *con = ((SciEngine *)g_engine)->_console;
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int i = 0;
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for (SuffixList::const_iterator suf = _parserSuffixes.begin(); suf != _parserSuffixes.end(); ++suf) {
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strncpy(word_buf, suf->word_suffix, suf->word_suffix_length);
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word_buf[suf->word_suffix_length] = 0;
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strncpy(alt_buf, suf->alt_suffix, suf->alt_suffix_length);
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alt_buf[suf->alt_suffix_length] = 0;
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con->DebugPrintf("%4d: (%03x) -%12s => -%12s (%03x)\n", i, suf->class_mask, word_buf, alt_buf, suf->result_class);
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++i;
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}
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}
|
|
|
|
void Vocabulary::printParserWords() {
|
|
Sci::Console *con = ((SciEngine *)g_engine)->_console;
|
|
|
|
int j = 0;
|
|
for (WordMap::iterator i = _parserWords.begin(); i != _parserWords.end(); ++i) {
|
|
con->DebugPrintf("%4d: %03x [%03x] %20s |", j, i->_value._class, i->_value._group, i->_key.c_str());
|
|
if (j % 3 == 0)
|
|
con->DebugPrintf("\n");
|
|
j++;
|
|
}
|
|
|
|
con->DebugPrintf("\n");
|
|
}
|
|
|
|
void Vocabulary::copyParserListsFrom(Vocabulary *voc) {
|
|
voc->copyParserListsTo(_parserSuffixes, *_parserRules, _parserBranches, _parserWords);
|
|
}
|
|
|
|
void Vocabulary::copyParserListsTo(SuffixList &parserSuffixes, parse_rule_list_t &parserRules,
|
|
Common::Array<parse_tree_branch_t> &parserBranches, WordMap &parserWords) {
|
|
parserSuffixes = _parserSuffixes;
|
|
parserRules = *_parserRules;
|
|
parserBranches = _parserBranches;
|
|
parserWords = _parserWords;
|
|
}
|
|
|
|
void Vocabulary::copyKernelListsFrom(Vocabulary *voc) {
|
|
voc->copyKernelListsTo(_opcodes, _selectorNames, _kernelNames);
|
|
}
|
|
|
|
void Vocabulary::copyKernelListsTo(Common::Array<opcode> &opcodes, Common::StringList &selectorNames,
|
|
Common::StringList &kernelNames) {
|
|
_opcodes = opcodes;
|
|
_selectorNames = selectorNames;
|
|
_kernelNames = kernelNames;
|
|
}
|
|
|
|
int Vocabulary::findSelector(const char *selectorName) {
|
|
for (uint pos = 0; pos < _selectorNames.size(); ++pos) {
|
|
if (_selectorNames[pos] == selectorName)
|
|
return pos;
|
|
}
|
|
|
|
warning("Could not map '%s' to any selector", selectorName);
|
|
|
|
return -1;
|
|
}
|
|
|
|
bool Vocabulary::hasKernelFunction(const char *functionName) {
|
|
Common::StringList::const_iterator it = Common::find(_kernelNames.begin(), _kernelNames.end(), functionName);
|
|
return (it != _kernelNames.end());
|
|
}
|
|
|
|
void _vocab_recursive_ptree_dump_treelike(parse_tree_node_t *nodes, int nr, int prevnr) {
|
|
if ((nr > VOCAB_TREE_NODES)/* || (nr < prevnr)*/) {
|
|
sciprintf("Error(%04x)", nr);
|
|
return;
|
|
}
|
|
|
|
if (nodes[nr].type == PARSE_TREE_NODE_LEAF)
|
|
//sciprintf("[%03x]%04x", nr, nodes[nr].content.value);
|
|
sciprintf("%x", nodes[nr].content.value);
|
|
else {
|
|
int lbranch = nodes[nr].content.branches[0];
|
|
int rbranch = nodes[nr].content.branches[1];
|
|
//sciprintf("<[%03x]", nr);
|
|
sciprintf("<");
|
|
|
|
if (lbranch)
|
|
_vocab_recursive_ptree_dump_treelike(nodes, lbranch, nr);
|
|
else
|
|
sciprintf("NULL");
|
|
|
|
sciprintf(",");
|
|
|
|
if (rbranch)
|
|
_vocab_recursive_ptree_dump_treelike(nodes, rbranch, nr);
|
|
else
|
|
sciprintf("NULL");
|
|
|
|
sciprintf(">");
|
|
}
|
|
}
|
|
|
|
void _vocab_recursive_ptree_dump(parse_tree_node_t *nodes, int nr, int prevnr, int blanks) {
|
|
int lbranch = nodes[nr].content.branches[0];
|
|
int rbranch = nodes[nr].content.branches[1];
|
|
int i;
|
|
|
|
if (nodes[nr].type == PARSE_TREE_NODE_LEAF) {
|
|
sciprintf("vocab_dump_parse_tree: Error: consp is nil for element %03x\n", nr);
|
|
return;
|
|
}
|
|
|
|
if ((nr > VOCAB_TREE_NODES)/* || (nr < prevnr)*/) {
|
|
sciprintf("Error(%04x))", nr);
|
|
return;
|
|
}
|
|
|
|
if (lbranch) {
|
|
if (nodes[lbranch].type == PARSE_TREE_NODE_BRANCH) {
|
|
sciprintf("\n");
|
|
for (i = 0; i < blanks; i++)
|
|
sciprintf(" ");
|
|
sciprintf("(");
|
|
_vocab_recursive_ptree_dump(nodes, lbranch, nr, blanks + 1);
|
|
sciprintf(")\n");
|
|
for (i = 0; i < blanks; i++)
|
|
sciprintf(" ");
|
|
} else
|
|
sciprintf("%x", nodes[lbranch].content.value);
|
|
sciprintf(" ");
|
|
}/* else sciprintf ("nil");*/
|
|
|
|
if (rbranch) {
|
|
if (nodes[rbranch].type == PARSE_TREE_NODE_BRANCH)
|
|
_vocab_recursive_ptree_dump(nodes, rbranch, nr, blanks);
|
|
else
|
|
sciprintf("%x", nodes[rbranch].content.value);
|
|
}/* else sciprintf("nil");*/
|
|
}
|
|
|
|
void vocab_dump_parse_tree(const char *tree_name, parse_tree_node_t *nodes) {
|
|
//_vocab_recursive_ptree_dump_treelike(nodes, 0, 0);
|
|
sciprintf("(setq %s \n'(", tree_name);
|
|
_vocab_recursive_ptree_dump(nodes, 0, 0, 1);
|
|
sciprintf("))\n");
|
|
}
|
|
|
|
void vocab_synonymize_tokens(ResultWordList &words, const SynonymList &synonyms) {
|
|
if (synonyms.empty())
|
|
return; // No synonyms: Nothing to check
|
|
|
|
for (ResultWordList::iterator i = words.begin(); i != words.end(); ++i)
|
|
for (SynonymList::const_iterator sync = synonyms.begin(); sync != synonyms.end(); ++sync)
|
|
if (i->_group == sync->replaceant)
|
|
i->_group = sync->replacement;
|
|
}
|
|
|
|
} // End of namespace Sci
|