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+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * Copyright (C) 2002-2022 Németh László
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Hunspell is based on MySpell which is Copyright (C) 2002 Kevin Hendricks.
+ *
+ * Contributor(s): David Einstein, Davide Prina, Giuseppe Modugno,
+ * Gianluca Turconi, Simon Brouwer, Noll János, Bíró Árpád,
+ * Goldman Eleonóra, Sarlós Tamás, Bencsáth Boldizsár, Halácsy Péter,
+ * Dvornik László, Gefferth András, Nagy Viktor, Varga Dániel, Chris Halls,
+ * Rene Engelhard, Bram Moolenaar, Dafydd Jones, Harri Pitkänen
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+/*
+ * Copyright 2002 Kevin B. Hendricks, Stratford, Ontario, Canada
+ * And Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. All modifications to the source code must be clearly marked as
+ * such. Binary redistributions based on modified source code
+ * must be clearly marked as modified versions in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY KEVIN B. HENDRICKS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * KEVIN B. HENDRICKS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <time.h>
+
+#include "suggestmgr.hxx"
+#include "htypes.hxx"
+#include "csutil.hxx"
+
+const w_char W_VLINE = {'\0', '|'};
+
+#define MAX_CHAR_DISTANCE 4
+
+SuggestMgr::SuggestMgr(const char* tryme, unsigned int maxn, AffixMgr* aptr) {
+ // register affix manager and check in string of chars to
+ // try when building candidate suggestions
+ pAMgr = aptr;
+
+ csconv = NULL;
+
+ ckeyl = 0;
+ ckey = NULL;
+
+ ctryl = 0;
+ ctry = NULL;
+
+ utf8 = 0;
+ langnum = 0;
+ complexprefixes = 0;
+
+ maxSug = maxn;
+ nosplitsugs = 0;
+ maxngramsugs = MAXNGRAMSUGS;
+ maxcpdsugs = MAXCOMPOUNDSUGS;
+
+ if (pAMgr) {
+ langnum = pAMgr->get_langnum();
+ ckey = pAMgr->get_key_string();
+ nosplitsugs = pAMgr->get_nosplitsugs();
+ if (pAMgr->get_maxngramsugs() >= 0)
+ maxngramsugs = pAMgr->get_maxngramsugs();
+ utf8 = pAMgr->get_utf8();
+ if (pAMgr->get_maxcpdsugs() >= 0)
+ maxcpdsugs = pAMgr->get_maxcpdsugs();
+ if (!utf8) {
+ csconv = get_current_cs(pAMgr->get_encoding());
+ }
+ complexprefixes = pAMgr->get_complexprefixes();
+ }
+
+ if (ckey) {
+ if (utf8) {
+ ckeyl = u8_u16(ckey_utf, ckey);
+ } else {
+ ckeyl = strlen(ckey);
+ }
+ }
+
+ if (tryme) {
+ ctry = mystrdup(tryme);
+ if (ctry)
+ ctryl = strlen(ctry);
+ if (ctry && utf8) {
+ ctryl = u8_u16(ctry_utf, tryme);
+ }
+ }
+
+ // language with possible dash usage
+ // (latin letters or dash in TRY characters)
+ lang_with_dash_usage = (ctry &&
+ ((strchr(ctry, '-') != NULL) || (strchr(ctry, 'a') != NULL)));
+}
+
+SuggestMgr::~SuggestMgr() {
+ pAMgr = NULL;
+ if (ckey)
+ free(ckey);
+ ckey = NULL;
+ ckeyl = 0;
+ if (ctry)
+ free(ctry);
+ ctry = NULL;
+ ctryl = 0;
+ maxSug = 0;
+#ifdef MOZILLA_CLIENT
+ delete[] csconv;
+#endif
+}
+
+void SuggestMgr::testsug(std::vector<std::string>& wlst,
+ const std::string& candidate,
+ int cpdsuggest,
+ int* timer,
+ clock_t* timelimit) {
+ int cwrd = 1;
+ if (wlst.size() == maxSug)
+ return;
+ for (size_t k = 0; k < wlst.size(); ++k) {
+ if (wlst[k] == candidate) {
+ cwrd = 0;
+ break;
+ }
+ }
+ if ((cwrd) && checkword(candidate, cpdsuggest, timer, timelimit)) {
+ wlst.push_back(candidate);
+ }
+}
+
+/* generate suggestions for a misspelled word
+ * pass in address of array of char * pointers
+ * onlycompoundsug: probably bad suggestions (need for ngram sugs, too)
+ * return value: true, if there is a good suggestion
+ * (REP, ph: or a dictionary word pair)
+ */
+bool SuggestMgr::suggest(std::vector<std::string>& slst,
+ const char* w,
+ int* onlycompoundsug) {
+ int nocompoundtwowords = 0;
+ std::vector<w_char> word_utf;
+ int wl = 0;
+ size_t nsugorig = slst.size();
+ std::string w2;
+ const char* word = w;
+ size_t oldSug = 0;
+ bool good_suggestion = false;
+
+ // word reversing wrapper for complex prefixes
+ if (complexprefixes) {
+ w2.assign(w);
+ if (utf8)
+ reverseword_utf(w2);
+ else
+ reverseword(w2);
+ word = w2.c_str();
+ }
+
+ if (utf8) {
+ wl = u8_u16(word_utf, word);
+ if (wl == -1) {
+ return false;
+ }
+ }
+
+ for (int cpdsuggest = 0; (cpdsuggest < 2) && (nocompoundtwowords == 0) && !good_suggestion;
+ cpdsuggest++) {
+
+ clock_t timelimit;
+ // initialize both in non-compound and compound cycles
+ timelimit = clock();
+
+ // limit compound suggestion
+ if (cpdsuggest > 0)
+ oldSug = slst.size();
+
+ // suggestions for an uppercase word (html -> HTML)
+ if (slst.size() < maxSug) {
+ size_t i = slst.size();
+ if (utf8)
+ capchars_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ capchars(slst, word, cpdsuggest);
+ if (slst.size() > i)
+ good_suggestion = true;
+ }
+
+ // perhaps we made a typical fault of spelling
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ size_t i = slst.size();
+ replchars(slst, word, cpdsuggest);
+ if (slst.size() > i)
+ good_suggestion = true;
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // perhaps we made chose the wrong char from a related set
+ if ((slst.size() < maxSug) &&
+ (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ mapchars(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // only suggest compound words when no other suggestion
+ if ((cpdsuggest == 0) && (slst.size() > nsugorig))
+ nocompoundtwowords = 1;
+
+ // did we swap the order of chars by mistake
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ swapchar_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ swapchar(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we swap the order of non adjacent chars by mistake
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ longswapchar_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ longswapchar(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we just hit the wrong key in place of a good char (case and keyboard)
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ badcharkey_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ badcharkey(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we add a char that should not be there
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ extrachar_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ extrachar(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we forgot a char
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ forgotchar_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ forgotchar(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we move a char
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ movechar_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ movechar(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we just hit the wrong key in place of a good char
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ badchar_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ badchar(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // did we double two characters
+ if ((slst.size() < maxSug) && (!cpdsuggest || (slst.size() < oldSug + maxcpdsugs))) {
+ if (utf8)
+ doubletwochars_utf(slst, word_utf.data(), wl, cpdsuggest);
+ else
+ doubletwochars(slst, word, cpdsuggest);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ // perhaps we forgot to hit space and two words ran together
+ // (dictionary word pairs have top priority here, so
+ // we always suggest them, in despite of nosplitsugs, and
+ // drop compound word and other suggestions)
+ if (!cpdsuggest || (!nosplitsugs && slst.size() < oldSug + maxcpdsugs)) {
+ good_suggestion = twowords(slst, word, cpdsuggest, good_suggestion);
+ }
+ if (clock() > timelimit + TIMELIMIT_SUGGESTION)
+ return good_suggestion;
+
+ } // repeating ``for'' statement compounding support
+
+ if (!nocompoundtwowords && (!slst.empty()) && onlycompoundsug)
+ *onlycompoundsug = 1;
+
+ return good_suggestion;
+}
+
+// suggestions for an uppercase word (html -> HTML)
+void SuggestMgr::capchars_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ mkallcap_utf(candidate_utf, langnum);
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+}
+
+// suggestions for an uppercase word (html -> HTML)
+void SuggestMgr::capchars(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+ mkallcap(candidate, csconv);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+}
+
+// suggestions for when chose the wrong char out of a related set
+int SuggestMgr::mapchars(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate;
+ clock_t timelimit;
+ int timer;
+
+ int wl = strlen(word);
+ if (wl < 2 || !pAMgr)
+ return wlst.size();
+
+ const std::vector<mapentry>& maptable = pAMgr->get_maptable();
+ if (maptable.empty())
+ return wlst.size();
+
+ timelimit = clock();
+ timer = MINTIMER;
+ return map_related(word, candidate, 0, wlst, cpdsuggest,
+ maptable, &timer, &timelimit);
+}
+
+int SuggestMgr::map_related(const char* word,
+ std::string& candidate,
+ int wn,
+ std::vector<std::string>& wlst,
+ int cpdsuggest,
+ const std::vector<mapentry>& maptable,
+ int* timer,
+ clock_t* timelimit) {
+ if (*(word + wn) == '\0') {
+ int cwrd = 1;
+ for (size_t m = 0; m < wlst.size(); ++m) {
+ if (wlst[m] == candidate) {
+ cwrd = 0;
+ break;
+ }
+ }
+ if ((cwrd) && checkword(candidate, cpdsuggest, timer, timelimit)) {
+ if (wlst.size() < maxSug) {
+ wlst.push_back(candidate);
+ }
+ }
+ return wlst.size();
+ }
+ int in_map = 0;
+ for (size_t j = 0; j < maptable.size(); ++j) {
+ for (size_t k = 0; k < maptable[j].size(); ++k) {
+ size_t len = maptable[j][k].size();
+ if (strncmp(maptable[j][k].c_str(), word + wn, len) == 0) {
+ in_map = 1;
+ size_t cn = candidate.size();
+ for (size_t l = 0; l < maptable[j].size(); ++l) {
+ candidate.resize(cn);
+ candidate.append(maptable[j][l]);
+ map_related(word, candidate, wn + len, wlst,
+ cpdsuggest, maptable, timer, timelimit);
+ if (!(*timer))
+ return wlst.size();
+ }
+ }
+ }
+ }
+ if (!in_map) {
+ candidate.push_back(*(word + wn));
+ map_related(word, candidate, wn + 1, wlst, cpdsuggest,
+ maptable, timer, timelimit);
+ }
+ return wlst.size();
+}
+
+// suggestions for a typical fault of spelling, that
+// differs with more, than 1 letter from the right form.
+int SuggestMgr::replchars(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate;
+ int wl = strlen(word);
+ if (wl < 2 || !pAMgr)
+ return wlst.size();
+ const std::vector<replentry>& reptable = pAMgr->get_reptable();
+ for (size_t i = 0; i < reptable.size(); ++i) {
+ const char* r = word;
+ // search every occurence of the pattern in the word
+ while ((r = strstr(r, reptable[i].pattern.c_str())) != NULL) {
+ int type = (r == word) ? 1 : 0;
+ if (r - word + reptable[i].pattern.size() == strlen(word))
+ type += 2;
+ while (type && reptable[i].outstrings[type].empty())
+ type = (type == 2 && r != word) ? 0 : type - 1;
+ const std::string&out = reptable[i].outstrings[type];
+ if (out.empty()) {
+ ++r;
+ continue;
+ }
+ candidate.assign(word);
+ candidate.resize(r - word);
+ candidate.append(reptable[i].outstrings[type]);
+ candidate.append(r + reptable[i].pattern.size());
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ // check REP suggestions with space
+ size_t sp = candidate.find(' ');
+ if (sp != std::string::npos) {
+ size_t prev = 0;
+ while (sp != std::string::npos) {
+ std::string prev_chunk = candidate.substr(prev, sp - prev);
+ if (checkword(prev_chunk, 0, NULL, NULL)) {
+ size_t oldns = wlst.size();
+ std::string post_chunk = candidate.substr(sp + 1);
+ testsug(wlst, post_chunk, cpdsuggest, NULL, NULL);
+ if (oldns < wlst.size()) {
+ wlst[wlst.size() - 1] = candidate;
+ }
+ }
+ prev = sp + 1;
+ sp = candidate.find(' ', prev);
+ }
+ }
+ r++; // search for the next letter
+ }
+ }
+ return wlst.size();
+}
+
+// perhaps we doubled two characters
+// (for example vacation -> vacacation)
+// The recognized pattern with regex back-references:
+// "(.)(.)\1\2\1" or "..(.)(.)\1\2"
+
+int SuggestMgr::doubletwochars(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ int state = 0;
+ int wl = strlen(word);
+ if (wl < 5 || !pAMgr)
+ return wlst.size();
+ for (int i = 2; i < wl; i++) {
+ if (word[i] == word[i - 2]) {
+ state++;
+ if (state == 3 || (state == 2 && i >= 4)) {
+ std::string candidate(word, word + i - 1);
+ candidate.insert(candidate.end(), word + i + 1, word + wl);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ state = 0;
+ }
+ } else {
+ state = 0;
+ }
+ }
+ return wlst.size();
+}
+
+// perhaps we doubled two characters
+// (for example vacation -> vacacation)
+// The recognized pattern with regex back-references:
+// "(.)(.)\1\2\1" or "..(.)(.)\1\2"
+
+int SuggestMgr::doubletwochars_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ int state = 0;
+ if (wl < 5 || !pAMgr)
+ return wlst.size();
+ for (int i = 2; i < wl; i++) {
+ if (word[i] == word[i - 2]) {
+ state++;
+ if (state == 3 || (state == 2 && i >= 4)) {
+ std::vector<w_char> candidate_utf(word, word + i - 1);
+ candidate_utf.insert(candidate_utf.end(), word + i + 1, word + wl);
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ state = 0;
+ }
+ } else {
+ state = 0;
+ }
+ }
+ return wlst.size();
+}
+
+// error is wrong char in place of correct one (case and keyboard related
+// version)
+int SuggestMgr::badcharkey(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+
+ // swap out each char one by one and try uppercase and neighbor
+ // keyboard chars in its place to see if that makes a good word
+ for (size_t i = 0; i < candidate.size(); ++i) {
+ char tmpc = candidate[i];
+ // check with uppercase letters
+ candidate[i] = csconv[((unsigned char)tmpc)].cupper;
+ if (tmpc != candidate[i]) {
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ candidate[i] = tmpc;
+ }
+ // check neighbor characters in keyboard string
+ if (!ckey)
+ continue;
+ char* loc = strchr(ckey, tmpc);
+ while (loc) {
+ if ((loc > ckey) && (*(loc - 1) != '|')) {
+ candidate[i] = *(loc - 1);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ if ((*(loc + 1) != '|') && (*(loc + 1) != '\0')) {
+ candidate[i] = *(loc + 1);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ loc = strchr(loc + 1, tmpc);
+ }
+ candidate[i] = tmpc;
+ }
+ return wlst.size();
+}
+
+// error is wrong char in place of correct one (case and keyboard related
+// version)
+int SuggestMgr::badcharkey_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::string candidate;
+ std::vector<w_char> candidate_utf(word, word + wl);
+ // swap out each char one by one and try all the tryme
+ // chars in its place to see if that makes a good word
+ for (int i = 0; i < wl; i++) {
+ w_char tmpc = candidate_utf[i];
+ // check with uppercase letters
+ candidate_utf[i] = upper_utf(candidate_utf[i], 1);
+ if (tmpc != candidate_utf[i]) {
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ candidate_utf[i] = tmpc;
+ }
+ // check neighbor characters in keyboard string
+ if (!ckey)
+ continue;
+ size_t loc = 0;
+ while ((loc < ckeyl) && ckey_utf[loc] != tmpc)
+ ++loc;
+ while (loc < ckeyl) {
+ if ((loc > 0) && ckey_utf[loc - 1] != W_VLINE) {
+ candidate_utf[i] = ckey_utf[loc - 1];
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ if (((loc + 1) < ckeyl) && (ckey_utf[loc + 1] != W_VLINE)) {
+ candidate_utf[i] = ckey_utf[loc + 1];
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ do {
+ loc++;
+ } while ((loc < ckeyl) && ckey_utf[loc] != tmpc);
+ }
+ candidate_utf[i] = tmpc;
+ }
+ return wlst.size();
+}
+
+// error is wrong char in place of correct one
+int SuggestMgr::badchar(std::vector<std::string>& wlst, const char* word, int cpdsuggest) {
+ std::string candidate(word);
+ clock_t timelimit = clock();
+ int timer = MINTIMER;
+ // swap out each char one by one and try all the tryme
+ // chars in its place to see if that makes a good word
+ for (size_t j = 0; j < ctryl; ++j) {
+ for (std::string::reverse_iterator aI = candidate.rbegin(), aEnd = candidate.rend(); aI != aEnd; ++aI) {
+ char tmpc = *aI;
+ if (ctry[j] == tmpc)
+ continue;
+ *aI = ctry[j];
+ testsug(wlst, candidate, cpdsuggest, &timer, &timelimit);
+ if (!timer)
+ return wlst.size();
+ *aI = tmpc;
+ }
+ }
+ return wlst.size();
+}
+
+// error is wrong char in place of correct one
+int SuggestMgr::badchar_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ std::string candidate;
+ clock_t timelimit = clock();
+ int timer = MINTIMER;
+ // swap out each char one by one and try all the tryme
+ // chars in its place to see if that makes a good word
+ for (size_t j = 0; j < ctryl; ++j) {
+ for (int i = wl - 1; i >= 0; i--) {
+ w_char tmpc = candidate_utf[i];
+ if (tmpc == ctry_utf[j])
+ continue;
+ candidate_utf[i] = ctry_utf[j];
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, &timer, &timelimit);
+ if (!timer)
+ return wlst.size();
+ candidate_utf[i] = tmpc;
+ }
+ }
+ return wlst.size();
+}
+
+// error is word has an extra letter it does not need
+int SuggestMgr::extrachar_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ if (candidate_utf.size() < 2)
+ return wlst.size();
+ // try omitting one char of word at a time
+ for (size_t i = 0; i < candidate_utf.size(); ++i) {
+ size_t index = candidate_utf.size() - 1 - i;
+ w_char tmpc = candidate_utf[index];
+ candidate_utf.erase(candidate_utf.begin() + index);
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ candidate_utf.insert(candidate_utf.begin() + index, tmpc);
+ }
+ return wlst.size();
+}
+
+// error is word has an extra letter it does not need
+int SuggestMgr::extrachar(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+ if (candidate.size() < 2)
+ return wlst.size();
+ // try omitting one char of word at a time
+ for (size_t i = 0; i < candidate.size(); ++i) {
+ size_t index = candidate.size() - 1 - i;
+ char tmpc = candidate[index];
+ candidate.erase(candidate.begin() + index);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ candidate.insert(candidate.begin() + index, tmpc);
+ }
+ return wlst.size();
+}
+
+// error is missing a letter it needs
+int SuggestMgr::forgotchar(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+ clock_t timelimit = clock();
+ int timer = MINTIMER;
+
+ // try inserting a tryme character before every letter (and the null
+ // terminator)
+ for (size_t k = 0; k < ctryl; ++k) {
+ for (size_t i = 0; i <= candidate.size(); ++i) {
+ size_t index = candidate.size() - i;
+ candidate.insert(candidate.begin() + index, ctry[k]);
+ testsug(wlst, candidate, cpdsuggest, &timer, &timelimit);
+ if (!timer)
+ return wlst.size();
+ candidate.erase(candidate.begin() + index);
+ }
+ }
+ return wlst.size();
+}
+
+// error is missing a letter it needs
+int SuggestMgr::forgotchar_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ clock_t timelimit = clock();
+ int timer = MINTIMER;
+
+ // try inserting a tryme character at the end of the word and before every
+ // letter
+ for (size_t k = 0; k < ctryl; ++k) {
+ for (size_t i = 0; i <= candidate_utf.size(); ++i) {
+ size_t index = candidate_utf.size() - i;
+ candidate_utf.insert(candidate_utf.begin() + index, ctry_utf[k]);
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, &timer, &timelimit);
+ if (!timer)
+ return wlst.size();
+ candidate_utf.erase(candidate_utf.begin() + index);
+ }
+ }
+ return wlst.size();
+}
+
+/* error is should have been two words
+ * return value is true, if there is a dictionary word pair,
+ * or there was already a good suggestion before calling
+ * this function.
+ */
+bool SuggestMgr::twowords(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest,
+ bool good) {
+ int c2;
+ int forbidden = 0;
+ int cwrd;
+
+ int wl = strlen(word);
+ if (wl < 3)
+ return false;
+
+ if (langnum == LANG_hu)
+ forbidden = check_forbidden(word, wl);
+
+ char* candidate = (char*)malloc(wl + 2);
+ strcpy(candidate + 1, word);
+
+ // split the string into two pieces after every char
+ // if both pieces are good words make them a suggestion
+ for (char* p = candidate + 1; p[1] != '\0'; p++) {
+ p[-1] = *p;
+ // go to end of the UTF-8 character
+ while (utf8 && ((p[1] & 0xc0) == 0x80)) {
+ *p = p[1];
+ p++;
+ }
+ if (utf8 && p[1] == '\0')
+ break; // last UTF-8 character
+
+ // Suggest only word pairs, if they are listed in the dictionary.
+ // For example, adding "a lot" to the English dic file will
+ // result only "alot" -> "a lot" suggestion instead of
+ // "alto, slot, alt, lot, allot, aloft, aloe, clot, plot, blot, a lot".
+ // Note: using "ph:alot" keeps the other suggestions:
+ // a lot ph:alot
+ // alot -> a lot, alto, slot...
+ *p = ' ';
+ if (!cpdsuggest && checkword(candidate, cpdsuggest, NULL, NULL)) {
+ // remove not word pair suggestions
+ if (!good) {
+ good = true;
+ wlst.clear();
+ }
+ wlst.insert(wlst.begin(), candidate);
+ }
+
+ // word pairs with dash?
+ if (lang_with_dash_usage) {
+ *p = '-';
+
+ if (!cpdsuggest && checkword(candidate, cpdsuggest, NULL, NULL)) {
+ // remove not word pair suggestions
+ if (!good) {
+ good = true;
+ wlst.clear();
+ }
+ wlst.insert(wlst.begin(), candidate);
+ }
+ }
+
+ if (wlst.size() < maxSug && !nosplitsugs && !good) {
+ *p = '\0';
+ int c1 = checkword(candidate, cpdsuggest, NULL, NULL);
+ if (c1) {
+ c2 = checkword((p + 1), cpdsuggest, NULL, NULL);
+ if (c2) {
+ // spec. Hungarian code (TODO need a better compound word support)
+ if ((langnum == LANG_hu) && !forbidden &&
+ // if 3 repeating letter, use - instead of space
+ (((p[-1] == p[1]) &&
+ (((p > candidate + 1) && (p[-1] == p[-2])) || (p[-1] == p[2]))) ||
+ // or multiple compounding, with more, than 6 syllables
+ ((c1 == 3) && (c2 >= 2))))
+ *p = '-';
+ else
+ *p = ' ';
+
+ cwrd = 1;
+ for (size_t k = 0; k < wlst.size(); ++k) {
+ if (wlst[k] == candidate) {
+ cwrd = 0;
+ break;
+ }
+ }
+
+ if (cwrd && (wlst.size() < maxSug))
+ wlst.push_back(candidate);
+
+ // add two word suggestion with dash, depending on the language
+ // Note that cwrd doesn't modified for REP twoword sugg.
+ if ( !nosplitsugs && lang_with_dash_usage &&
+ mystrlen(p + 1) > 1 && mystrlen(candidate) - mystrlen(p) > 1) {
+ *p = '-';
+ for (size_t k = 0; k < wlst.size(); ++k) {
+ if (wlst[k] == candidate) {
+ cwrd = 0;
+ break;
+ }
+ }
+
+ if ((wlst.size() < maxSug) && cwrd)
+ wlst.push_back(candidate);
+ }
+ }
+ }
+ }
+ }
+ free(candidate);
+ return good;
+}
+
+// error is adjacent letter were swapped
+int SuggestMgr::swapchar(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+ if (candidate.size() < 2)
+ return wlst.size();
+
+ // try swapping adjacent chars one by one
+ for (size_t i = 0; i < candidate.size() - 1; ++i) {
+ std::swap(candidate[i], candidate[i+1]);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ std::swap(candidate[i], candidate[i+1]);
+ }
+
+ // try double swaps for short words
+ // ahev -> have, owudl -> would
+ if (candidate.size() == 4 || candidate.size() == 5) {
+ candidate[0] = word[1];
+ candidate[1] = word[0];
+ candidate[2] = word[2];
+ candidate[candidate.size() - 2] = word[candidate.size() - 1];
+ candidate[candidate.size() - 1] = word[candidate.size() - 2];
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ if (candidate.size() == 5) {
+ candidate[0] = word[0];
+ candidate[1] = word[2];
+ candidate[2] = word[1];
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ }
+
+ return wlst.size();
+}
+
+// error is adjacent letter were swapped
+int SuggestMgr::swapchar_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ if (candidate_utf.size() < 2)
+ return wlst.size();
+
+ std::string candidate;
+ // try swapping adjacent chars one by one
+ for (size_t i = 0; i < candidate_utf.size() - 1; ++i) {
+ std::swap(candidate_utf[i], candidate_utf[i+1]);
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ std::swap(candidate_utf[i], candidate_utf[i+1]);
+ }
+
+ // try double swaps for short words
+ // ahev -> have, owudl -> would, suodn -> sound
+ if (candidate_utf.size() == 4 || candidate_utf.size() == 5) {
+ candidate_utf[0] = word[1];
+ candidate_utf[1] = word[0];
+ candidate_utf[2] = word[2];
+ candidate_utf[candidate_utf.size() - 2] = word[candidate_utf.size() - 1];
+ candidate_utf[candidate_utf.size() - 1] = word[candidate_utf.size() - 2];
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ if (candidate_utf.size() == 5) {
+ candidate_utf[0] = word[0];
+ candidate_utf[1] = word[2];
+ candidate_utf[2] = word[1];
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ }
+ return wlst.size();
+}
+
+// error is not adjacent letter were swapped
+int SuggestMgr::longswapchar(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+ // try swapping not adjacent chars one by one
+ for (std::string::iterator p = candidate.begin(); p < candidate.end(); ++p) {
+ for (std::string::iterator q = candidate.begin(); q < candidate.end(); ++q) {
+ size_t distance = std::abs(std::distance(q, p));
+ if (distance > 1 && distance <= MAX_CHAR_DISTANCE) {
+ std::swap(*p, *q);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ std::swap(*p, *q);
+ }
+ }
+ }
+ return wlst.size();
+}
+
+// error is adjacent letter were swapped
+int SuggestMgr::longswapchar_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ // try swapping not adjacent chars
+ for (std::vector<w_char>::iterator p = candidate_utf.begin(); p < candidate_utf.end(); ++p) {
+ for (std::vector<w_char>::iterator q = candidate_utf.begin(); q < candidate_utf.end(); ++q) {
+ size_t distance = std::abs(std::distance(q, p));
+ if (distance > 1 && distance <= MAX_CHAR_DISTANCE) {
+ std::swap(*p, *q);
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ std::swap(*p, *q);
+ }
+ }
+ }
+ return wlst.size();
+}
+
+// error is a letter was moved
+int SuggestMgr::movechar(std::vector<std::string>& wlst,
+ const char* word,
+ int cpdsuggest) {
+ std::string candidate(word);
+ if (candidate.size() < 2)
+ return wlst.size();
+
+ // try moving a char
+ for (std::string::iterator p = candidate.begin(); p < candidate.end(); ++p) {
+ for (std::string::iterator q = p + 1; q < candidate.end() && std::distance(p, q) <= MAX_CHAR_DISTANCE; ++q) {
+ std::swap(*q, *(q - 1));
+ if (std::distance(p, q) < 2)
+ continue; // omit swap char
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ std::copy(word, word + candidate.size(), candidate.begin());
+ }
+
+ for (std::string::reverse_iterator p = candidate.rbegin(), pEnd = candidate.rend() - 1; p != pEnd; ++p) {
+ for (std::string::reverse_iterator q = p + 1, qEnd = candidate.rend(); q != qEnd && std::distance(p, q) <= MAX_CHAR_DISTANCE; ++q) {
+ std::swap(*q, *(q - 1));
+ if (std::distance(p, q) < 2)
+ continue; // omit swap char
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ std::copy(word, word + candidate.size(), candidate.begin());
+ }
+
+ return wlst.size();
+}
+
+// error is a letter was moved
+int SuggestMgr::movechar_utf(std::vector<std::string>& wlst,
+ const w_char* word,
+ int wl,
+ int cpdsuggest) {
+ std::vector<w_char> candidate_utf(word, word + wl);
+ if (candidate_utf.size() < 2)
+ return wlst.size();
+
+ // try moving a char
+ for (std::vector<w_char>::iterator p = candidate_utf.begin(); p < candidate_utf.end(); ++p) {
+ for (std::vector<w_char>::iterator q = p + 1; q < candidate_utf.end() && std::distance(p, q) <= MAX_CHAR_DISTANCE; ++q) {
+ std::swap(*q, *(q - 1));
+ if (std::distance(p, q) < 2)
+ continue; // omit swap char
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ std::copy(word, word + candidate_utf.size(), candidate_utf.begin());
+ }
+
+ for (std::vector<w_char>::reverse_iterator p = candidate_utf.rbegin(); p < candidate_utf.rend(); ++p) {
+ for (std::vector<w_char>::reverse_iterator q = p + 1; q < candidate_utf.rend() && std::distance(p, q) <= MAX_CHAR_DISTANCE; ++q) {
+ std::swap(*q, *(q - 1));
+ if (std::distance(p, q) < 2)
+ continue; // omit swap char
+ std::string candidate;
+ u16_u8(candidate, candidate_utf);
+ testsug(wlst, candidate, cpdsuggest, NULL, NULL);
+ }
+ std::copy(word, word + candidate_utf.size(), candidate_utf.begin());
+ }
+
+ return wlst.size();
+}
+
+// generate a set of suggestions for very poorly spelled words
+void SuggestMgr::ngsuggest(std::vector<std::string>& wlst,
+ const char* w,
+ const std::vector<HashMgr*>& rHMgr,
+ int captype) {
+ int lval;
+ int sc;
+ int lp, lpphon;
+ int nonbmp = 0;
+
+ // exhaustively search through all root words
+ // keeping track of the MAX_ROOTS most similar root words
+ struct hentry* roots[MAX_ROOTS];
+ char* rootsphon[MAX_ROOTS];
+ int scores[MAX_ROOTS];
+ int scoresphon[MAX_ROOTS];
+ for (int i = 0; i < MAX_ROOTS; i++) {
+ roots[i] = NULL;
+ scores[i] = -100 * i;
+ rootsphon[i] = NULL;
+ scoresphon[i] = -100 * i;
+ }
+ lp = MAX_ROOTS - 1;
+ lpphon = MAX_ROOTS - 1;
+ int low = NGRAM_LOWERING;
+
+ std::string w2;
+ const char* word = w;
+
+ // word reversing wrapper for complex prefixes
+ if (complexprefixes) {
+ w2.assign(w);
+ if (utf8)
+ reverseword_utf(w2);
+ else
+ reverseword(w2);
+ word = w2.c_str();
+ }
+
+ std::vector<w_char> u8;
+ int nc = strlen(word);
+ int n = (utf8) ? u8_u16(u8, word) : nc;
+
+ // set character based ngram suggestion for words with non-BMP Unicode
+ // characters
+ if (n == -1) {
+ utf8 = 0; // XXX not state-free
+ n = nc;
+ nonbmp = 1;
+ low = 0;
+ }
+
+ struct hentry* hp = NULL;
+ int col = -1;
+ phonetable* ph = (pAMgr) ? pAMgr->get_phonetable() : NULL;
+ std::string target;
+ std::string candidate;
+ std::vector<w_char> w_candidate;
+ if (ph) {
+ if (utf8) {
+ u8_u16(w_candidate, word);
+ mkallcap_utf(w_candidate, langnum);
+ u16_u8(candidate, w_candidate);
+ } else {
+ candidate.assign(word);
+ if (!nonbmp)
+ mkallcap(candidate, csconv);
+ }
+ target = phonet(candidate, *ph); // XXX phonet() is 8-bit (nc, not n)
+ }
+
+ FLAG forbiddenword = pAMgr ? pAMgr->get_forbiddenword() : FLAG_NULL;
+ FLAG nosuggest = pAMgr ? pAMgr->get_nosuggest() : FLAG_NULL;
+ FLAG nongramsuggest = pAMgr ? pAMgr->get_nongramsuggest() : FLAG_NULL;
+ FLAG onlyincompound = pAMgr ? pAMgr->get_onlyincompound() : FLAG_NULL;
+
+ std::vector<w_char> w_word, w_target;
+ if (utf8) {
+ u8_u16(w_word, word);
+ u8_u16(w_target, target);
+ }
+
+ std::string f;
+ std::vector<w_char> w_f;
+
+ for (size_t i = 0; i < rHMgr.size(); ++i) {
+ while (0 != (hp = rHMgr[i]->walk_hashtable(col, hp))) {
+ // skip exceptions
+ if (
+ // skip it, if the word length different by 5 or
+ // more characters (to avoid strange suggestions)
+ // (except Unicode characters over BMP)
+ (((abs(n - hp->clen) > 4) && !nonbmp)) ||
+ // don't suggest capitalized dictionary words for
+ // lower case misspellings in ngram suggestions, except
+ // - PHONE usage, or
+ // - in the case of German, where not only proper
+ // nouns are capitalized, or
+ // - the capitalized word has special pronunciation
+ ((captype == NOCAP) && (hp->var & H_OPT_INITCAP) &&
+ !ph && (langnum != LANG_de) && !(hp->var & H_OPT_PHON)) ||
+ // or it has one of the following special flags
+ ((hp->astr) && (pAMgr) &&
+ (TESTAFF(hp->astr, forbiddenword, hp->alen) ||
+ TESTAFF(hp->astr, ONLYUPCASEFLAG, hp->alen) ||
+ TESTAFF(hp->astr, nosuggest, hp->alen) ||
+ TESTAFF(hp->astr, nongramsuggest, hp->alen) ||
+ TESTAFF(hp->astr, onlyincompound, hp->alen)))
+ )
+ continue;
+
+ if (utf8) {
+ u8_u16(w_f, HENTRY_WORD(hp));
+
+ int leftcommon = leftcommonsubstring(w_word, w_f);
+ if (low) {
+ // lowering dictionary word
+ mkallsmall_utf(w_f, langnum);
+ }
+ sc = ngram(3, w_word, w_f, NGRAM_LONGER_WORSE) + leftcommon;
+ } else {
+ f.assign(HENTRY_WORD(hp));
+
+ int leftcommon = leftcommonsubstring(word, f.c_str());
+ if (low) {
+ // lowering dictionary word
+ mkallsmall(f, csconv);
+ }
+ sc = ngram(3, word, f, NGRAM_LONGER_WORSE) + leftcommon;
+ }
+
+ // check special pronunciation
+ f.clear();
+ if ((hp->var & H_OPT_PHON) &&
+ copy_field(f, HENTRY_DATA(hp), MORPH_PHON)) {
+ int sc2;
+ if (utf8) {
+ u8_u16(w_f, f);
+
+ int leftcommon = leftcommonsubstring(w_word, w_f);
+ if (low) {
+ // lowering dictionary word
+ mkallsmall_utf(w_f, langnum);
+ }
+ sc2 = ngram(3, w_word, w_f, NGRAM_LONGER_WORSE) + leftcommon;
+ } else {
+ int leftcommon = leftcommonsubstring(word, f.c_str());
+ if (low) {
+ // lowering dictionary word
+ mkallsmall(f, csconv);
+ }
+ sc2 = ngram(3, word, f, NGRAM_LONGER_WORSE) + leftcommon;
+ }
+ if (sc2 > sc)
+ sc = sc2;
+ }
+
+ int scphon = -20000;
+ if (ph && (sc > 2) && (abs(n - (int)hp->clen) <= 3)) {
+ if (utf8) {
+ u8_u16(w_candidate, HENTRY_WORD(hp));
+ mkallcap_utf(w_candidate, langnum);
+ u16_u8(candidate, w_candidate);
+ } else {
+ candidate = HENTRY_WORD(hp);
+ mkallcap(candidate, csconv);
+ }
+ f = phonet(candidate, *ph);
+ if (utf8) {
+ u8_u16(w_f, f);
+ scphon = 2 * ngram(3, w_target, w_f,
+ NGRAM_LONGER_WORSE);
+ } else {
+ scphon = 2 * ngram(3, target, f,
+ NGRAM_LONGER_WORSE);
+ }
+ }
+
+ if (sc > scores[lp]) {
+ scores[lp] = sc;
+ roots[lp] = hp;
+ lval = sc;
+ for (int j = 0; j < MAX_ROOTS; j++)
+ if (scores[j] < lval) {
+ lp = j;
+ lval = scores[j];
+ }
+ }
+
+ if (scphon > scoresphon[lpphon]) {
+ scoresphon[lpphon] = scphon;
+ rootsphon[lpphon] = HENTRY_WORD(hp);
+ lval = scphon;
+ for (int j = 0; j < MAX_ROOTS; j++)
+ if (scoresphon[j] < lval) {
+ lpphon = j;
+ lval = scoresphon[j];
+ }
+ }
+ }
+ }
+
+ // find minimum threshold for a passable suggestion
+ // mangle original word three differnt ways
+ // and score them to generate a minimum acceptable score
+ std::vector<w_char> w_mw;
+ int thresh = 0;
+ for (int sp = 1; sp < 4; sp++) {
+ if (utf8) {
+ w_mw = w_word;
+ for (int k = sp; k < n; k += 4) {
+ w_mw[k].l = '*';
+ w_mw[k].h = 0;
+ }
+
+ if (low) {
+ // lowering dictionary word
+ mkallsmall_utf(w_mw, langnum);
+ }
+
+ thresh += ngram(n, w_word, w_mw, NGRAM_ANY_MISMATCH);
+ } else {
+ std::string mw = word;
+ for (int k = sp; k < n; k += 4)
+ mw[k] = '*';
+
+ if (low) {
+ // lowering dictionary word
+ mkallsmall(mw, csconv);
+ }
+
+ thresh += ngram(n, word, mw, NGRAM_ANY_MISMATCH);
+ }
+ }
+ thresh = thresh / 3;
+ thresh--;
+
+ // now expand affixes on each of these root words and
+ // and use length adjusted ngram scores to select
+ // possible suggestions
+ char* guess[MAX_GUESS];
+ char* guessorig[MAX_GUESS];
+ int gscore[MAX_GUESS];
+ for (int i = 0; i < MAX_GUESS; i++) {
+ guess[i] = NULL;
+ guessorig[i] = NULL;
+ gscore[i] = -100 * i;
+ }
+
+ lp = MAX_GUESS - 1;
+
+ struct guessword* glst;
+ glst = (struct guessword*)calloc(MAX_WORDS, sizeof(struct guessword));
+ if (!glst) {
+ if (nonbmp)
+ utf8 = 1;
+ return;
+ }
+
+ for (int i = 0; i < MAX_ROOTS; i++) {
+ if (roots[i]) {
+ struct hentry* rp = roots[i];
+
+ f.clear();
+ const char *field = NULL;
+ if ((rp->var & H_OPT_PHON) && copy_field(f, HENTRY_DATA(rp), MORPH_PHON))
+ field = f.c_str();
+ int nw = pAMgr->expand_rootword(
+ glst, MAX_WORDS, HENTRY_WORD(rp), rp->blen, rp->astr, rp->alen, word,
+ nc, field);
+
+ for (int k = 0; k < nw; k++) {
+ if (utf8) {
+ u8_u16(w_f, glst[k].word);
+
+ int leftcommon = leftcommonsubstring(w_word, w_f);
+ if (low) {
+ // lowering dictionary word
+ mkallsmall_utf(w_f, langnum);
+ }
+
+ sc = ngram(n, w_word, w_f, NGRAM_ANY_MISMATCH) + leftcommon;
+ } else {
+ f = glst[k].word;
+
+ int leftcommon = leftcommonsubstring(word, f.c_str());
+ if (low) {
+ // lowering dictionary word
+ mkallsmall(f, csconv);
+ }
+
+ sc = ngram(n, word, f, NGRAM_ANY_MISMATCH) + leftcommon;
+ }
+
+ if (sc > thresh) {
+ if (sc > gscore[lp]) {
+ if (guess[lp]) {
+ free(guess[lp]);
+ if (guessorig[lp]) {
+ free(guessorig[lp]);
+ guessorig[lp] = NULL;
+ }
+ }
+ gscore[lp] = sc;
+ guess[lp] = glst[k].word;
+ guessorig[lp] = glst[k].orig;
+ lval = sc;
+ for (int j = 0; j < MAX_GUESS; j++)
+ if (gscore[j] < lval) {
+ lp = j;
+ lval = gscore[j];
+ }
+ } else {
+ free(glst[k].word);
+ if (glst[k].orig)
+ free(glst[k].orig);
+ }
+ } else {
+ free(glst[k].word);
+ if (glst[k].orig)
+ free(glst[k].orig);
+ }
+ }
+ }
+ }
+ free(glst);
+
+ // now we are done generating guesses
+ // sort in order of decreasing score
+
+ bubblesort(&guess[0], &guessorig[0], &gscore[0], MAX_GUESS);
+ if (ph)
+ bubblesort(&rootsphon[0], NULL, &scoresphon[0], MAX_ROOTS);
+
+ // weight suggestions with a similarity index, based on
+ // the longest common subsequent algorithm and resort
+
+ int is_swap = 0;
+ int re = 0;
+ double fact = 1.0;
+ if (pAMgr) {
+ int maxd = pAMgr->get_maxdiff();
+ if (maxd >= 0)
+ fact = (10.0 - maxd) / 5.0;
+ }
+
+ std::vector<w_char> w_gl;
+ for (int i = 0; i < MAX_GUESS; i++) {
+ if (guess[i]) {
+ // lowering guess[i]
+ std::string gl;
+ int len;
+ if (utf8) {
+ len = u8_u16(w_gl, guess[i]);
+ mkallsmall_utf(w_gl, langnum);
+ u16_u8(gl, w_gl);
+ } else {
+ gl.assign(guess[i]);
+ if (!nonbmp)
+ mkallsmall(gl, csconv);
+ len = strlen(guess[i]);
+ }
+
+ int _lcs = lcslen(word, gl.c_str());
+
+ // same characters with different casing
+ if ((n == len) && (n == _lcs)) {
+ gscore[i] += 2000;
+ break;
+ }
+ // using 2-gram instead of 3, and other weightening
+
+ if (utf8) {
+ u8_u16(w_gl, gl);
+ //w_gl is lowercase already at this point
+ re = ngram(2, w_word, w_gl, NGRAM_ANY_MISMATCH + NGRAM_WEIGHTED);
+ if (low) {
+ w_f = w_word;
+ // lowering dictionary word
+ mkallsmall_utf(w_f, langnum);
+ re += ngram(2, w_gl, w_f, NGRAM_ANY_MISMATCH + NGRAM_WEIGHTED);
+ } else {
+ re += ngram(2, w_gl, w_word, NGRAM_ANY_MISMATCH + NGRAM_WEIGHTED);
+ }
+ } else {
+ //gl is lowercase already at this point
+ re = ngram(2, word, gl, NGRAM_ANY_MISMATCH + NGRAM_WEIGHTED);
+ if (low) {
+ f = word;
+ // lowering dictionary word
+ mkallsmall(f, csconv);
+ re += ngram(2, gl, f, NGRAM_ANY_MISMATCH + NGRAM_WEIGHTED);
+ } else {
+ re += ngram(2, gl, word, NGRAM_ANY_MISMATCH + NGRAM_WEIGHTED);
+ }
+ }
+
+ int ngram_score, leftcommon_score;
+ if (utf8) {
+ //w_gl is lowercase already at this point
+ ngram_score = ngram(4, w_word, w_gl, NGRAM_ANY_MISMATCH);
+ leftcommon_score = leftcommonsubstring(w_word, w_gl);
+ } else {
+ //gl is lowercase already at this point
+ ngram_score = ngram(4, word, gl, NGRAM_ANY_MISMATCH);
+ leftcommon_score = leftcommonsubstring(word, gl.c_str());
+ }
+ gscore[i] =
+ // length of longest common subsequent minus length difference
+ 2 * _lcs - abs((int)(n - len)) +
+ // weight length of the left common substring
+ leftcommon_score +
+ // weight equal character positions
+ (!nonbmp && commoncharacterpositions(word, gl.c_str(), &is_swap)
+ ? 1
+ : 0) +
+ // swap character (not neighboring)
+ ((is_swap) ? 10 : 0) +
+ // ngram
+ ngram_score +
+ // weighted ngrams
+ re +
+ // different limit for dictionaries with PHONE rules
+ (ph ? (re < len * fact ? -1000 : 0)
+ : (re < (n + len) * fact ? -1000 : 0));
+ }
+ }
+
+ bubblesort(&guess[0], &guessorig[0], &gscore[0], MAX_GUESS);
+
+ // phonetic version
+ if (ph)
+ for (int i = 0; i < MAX_ROOTS; i++) {
+ if (rootsphon[i]) {
+ // lowering rootphon[i]
+ std::string gl;
+ int len;
+ if (utf8) {
+ len = u8_u16(w_gl, rootsphon[i]);
+ mkallsmall_utf(w_gl, langnum);
+ u16_u8(gl, w_gl);
+ } else {
+ gl.assign(rootsphon[i]);
+ if (!nonbmp)
+ mkallsmall(gl, csconv);
+ len = strlen(rootsphon[i]);
+ }
+
+ // weight length of the left common substring
+ int leftcommon_score;
+ if (utf8)
+ leftcommon_score = leftcommonsubstring(w_word, w_gl);
+ else
+ leftcommon_score = leftcommonsubstring(word, gl.c_str());
+ // heuristic weigthing of ngram scores
+ scoresphon[i] += 2 * lcslen(word, gl) - abs((int)(n - len)) +
+ leftcommon_score;
+ }
+ }
+
+ if (ph)
+ bubblesort(&rootsphon[0], NULL, &scoresphon[0], MAX_ROOTS);
+
+ // copy over
+ size_t oldns = wlst.size();
+
+ int same = 0;
+ for (int i = 0; i < MAX_GUESS; i++) {
+ if (guess[i]) {
+ if ((wlst.size() < oldns + maxngramsugs) && (wlst.size() < maxSug) &&
+ (!same || (gscore[i] > 1000))) {
+ int unique = 1;
+ // leave only excellent suggestions, if exists
+ if (gscore[i] > 1000)
+ same = 1;
+ else if (gscore[i] < -100) {
+ same = 1;
+ // keep the best ngram suggestions, unless in ONLYMAXDIFF mode
+ if (wlst.size() > oldns || (pAMgr && pAMgr->get_onlymaxdiff())) {
+ free(guess[i]);
+ if (guessorig[i])
+ free(guessorig[i]);
+ continue;
+ }
+ }
+ for (size_t j = 0; j < wlst.size(); ++j) {
+ // don't suggest previous suggestions or a previous suggestion with
+ // prefixes or affixes
+ if ((!guessorig[i] && strstr(guess[i], wlst[j].c_str())) ||
+ (guessorig[i] && strstr(guessorig[i], wlst[j].c_str())) ||
+ // check forbidden words
+ !checkword(guess[i], 0, NULL, NULL)) {
+ unique = 0;
+ break;
+ }
+ }
+ if (unique) {
+ if (guessorig[i]) {
+ wlst.push_back(guessorig[i]);
+ } else {
+ wlst.push_back(guess[i]);
+ }
+ }
+ free(guess[i]);
+ if (guessorig[i])
+ free(guessorig[i]);
+ } else {
+ free(guess[i]);
+ if (guessorig[i])
+ free(guessorig[i]);
+ }
+ }
+ }
+
+ oldns = wlst.size();
+ if (ph)
+ for (int i = 0; i < MAX_ROOTS; i++) {
+ if (rootsphon[i]) {
+ if ((wlst.size() < oldns + MAXPHONSUGS) && (wlst.size() < maxSug)) {
+ int unique = 1;
+ for (size_t j = 0; j < wlst.size(); ++j) {
+ // don't suggest previous suggestions or a previous suggestion with
+ // prefixes or affixes
+ if (strstr(rootsphon[i], wlst[j].c_str()) ||
+ // check forbidden words
+ !checkword(rootsphon[i], 0, NULL, NULL)) {
+ unique = 0;
+ break;
+ }
+ }
+ if (unique) {
+ wlst.push_back(rootsphon[i]);
+ }
+ }
+ }
+ }
+
+ if (nonbmp)
+ utf8 = 1;
+}
+
+// see if a candidate suggestion is spelled correctly
+// needs to check both root words and words with affixes
+
+// obsolote MySpell-HU modifications:
+// return value 2 and 3 marks compounding with hyphen (-)
+// `3' marks roots without suffix
+int SuggestMgr::checkword(const std::string& word,
+ int cpdsuggest,
+ int* timer,
+ clock_t* timelimit) {
+ // check time limit
+ if (timer) {
+ (*timer)--;
+ if (!(*timer) && timelimit) {
+ if ((clock() - *timelimit) > TIMELIMIT)
+ return 0;
+ *timer = MAXPLUSTIMER;
+ }
+ }
+
+ if (pAMgr) {
+ struct hentry* rv = NULL;
+ int nosuffix = 0;
+
+ if (cpdsuggest == 1) {
+ if (pAMgr->get_compound()) {
+ struct hentry* rv2 = NULL;
+ struct hentry* rwords[100]; // buffer for COMPOUND pattern checking
+ rv = pAMgr->compound_check(word, 0, 0, 100, 0, NULL, (hentry**)&rwords, 0, 1, 0); // EXT
+ if (rv &&
+ (!(rv2 = pAMgr->lookup(word.c_str())) || !rv2->astr ||
+ !(TESTAFF(rv2->astr, pAMgr->get_forbiddenword(), rv2->alen) ||
+ TESTAFF(rv2->astr, pAMgr->get_nosuggest(), rv2->alen))))
+ return 3; // XXX obsolote categorisation + only ICONV needs affix
+ // flag check?
+ }
+ return 0;
+ }
+
+ rv = pAMgr->lookup(word.c_str());
+
+ if (rv) {
+ if ((rv->astr) &&
+ (TESTAFF(rv->astr, pAMgr->get_forbiddenword(), rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_nosuggest(), rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_substandard(), rv->alen)))
+ return 0;
+ while (rv) {
+ if (rv->astr &&
+ (TESTAFF(rv->astr, pAMgr->get_needaffix(), rv->alen) ||
+ TESTAFF(rv->astr, ONLYUPCASEFLAG, rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_onlyincompound(), rv->alen))) {
+ rv = rv->next_homonym;
+ } else
+ break;
+ }
+ } else
+ rv = pAMgr->prefix_check(word.c_str(), word.size(),
+ 0); // only prefix, and prefix + suffix XXX
+
+ if (rv) {
+ nosuffix = 1;
+ } else {
+ rv = pAMgr->suffix_check(word.c_str(), word.size(), 0, NULL,
+ FLAG_NULL, FLAG_NULL, IN_CPD_NOT); // only suffix
+ }
+
+ if (!rv && pAMgr->have_contclass()) {
+ rv = pAMgr->suffix_check_twosfx(word.c_str(), word.size(), 0, NULL, FLAG_NULL);
+ if (!rv)
+ rv = pAMgr->prefix_check_twosfx(word.c_str(), word.size(), 0, FLAG_NULL);
+ }
+
+ // check forbidden words
+ if ((rv) && (rv->astr) &&
+ (TESTAFF(rv->astr, pAMgr->get_forbiddenword(), rv->alen) ||
+ TESTAFF(rv->astr, ONLYUPCASEFLAG, rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_nosuggest(), rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_onlyincompound(), rv->alen)))
+ return 0;
+
+ if (rv) { // XXX obsolote
+ if ((pAMgr->get_compoundflag()) &&
+ TESTAFF(rv->astr, pAMgr->get_compoundflag(), rv->alen))
+ return 2 + nosuffix;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int SuggestMgr::check_forbidden(const char* word, int len) {
+ if (pAMgr) {
+ struct hentry* rv = pAMgr->lookup(word);
+ if (rv && rv->astr &&
+ (TESTAFF(rv->astr, pAMgr->get_needaffix(), rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_onlyincompound(), rv->alen)))
+ rv = NULL;
+ if (!(pAMgr->prefix_check(word, len, 1)))
+ rv = pAMgr->suffix_check(word, len, 0, NULL,
+ FLAG_NULL, FLAG_NULL, IN_CPD_NOT); // prefix+suffix, suffix
+ // check forbidden words
+ if ((rv) && (rv->astr) &&
+ TESTAFF(rv->astr, pAMgr->get_forbiddenword(), rv->alen))
+ return 1;
+ }
+ return 0;
+}
+
+std::string SuggestMgr::suggest_morph(const std::string& in_w) {
+ std::string result;
+
+ struct hentry* rv = NULL;
+
+ if (!pAMgr)
+ return std::string();
+
+ std::string w(in_w);
+
+ // word reversing wrapper for complex prefixes
+ if (complexprefixes) {
+ if (utf8)
+ reverseword_utf(w);
+ else
+ reverseword(w);
+ }
+
+ rv = pAMgr->lookup(w.c_str());
+
+ while (rv) {
+ if ((!rv->astr) ||
+ !(TESTAFF(rv->astr, pAMgr->get_forbiddenword(), rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_needaffix(), rv->alen) ||
+ TESTAFF(rv->astr, pAMgr->get_onlyincompound(), rv->alen))) {
+ if (!HENTRY_FIND(rv, MORPH_STEM)) {
+ result.push_back(MSEP_FLD);
+ result.append(MORPH_STEM);
+ result.append(w);
+ }
+ if (HENTRY_DATA(rv)) {
+ result.push_back(MSEP_FLD);
+ result.append(HENTRY_DATA2(rv));
+ }
+ result.push_back(MSEP_REC);
+ }
+ rv = rv->next_homonym;
+ }
+
+ std::string st = pAMgr->affix_check_morph(w.c_str(), w.size());
+ if (!st.empty()) {
+ result.append(st);
+ }
+
+ if (pAMgr->get_compound() && result.empty()) {
+ struct hentry* rwords[100]; // buffer for COMPOUND pattern checking
+ pAMgr->compound_check_morph(w.c_str(), w.size(), 0, 0, 100, 0, NULL, (hentry**)&rwords, 0, result,
+ NULL);
+ }
+
+ line_uniq(result, MSEP_REC);
+
+ return result;
+}
+
+static int get_sfxcount(const char* morph) {
+ if (!morph || !*morph)
+ return 0;
+ int n = 0;
+ const char* old = morph;
+ morph = strstr(morph, MORPH_DERI_SFX);
+ if (!morph)
+ morph = strstr(old, MORPH_INFL_SFX);
+ if (!morph)
+ morph = strstr(old, MORPH_TERM_SFX);
+ while (morph) {
+ n++;
+ old = morph;
+ morph = strstr(morph + 1, MORPH_DERI_SFX);
+ if (!morph)
+ morph = strstr(old + 1, MORPH_INFL_SFX);
+ if (!morph)
+ morph = strstr(old + 1, MORPH_TERM_SFX);
+ }
+ return n;
+}
+
+/* affixation */
+std::string SuggestMgr::suggest_hentry_gen(hentry* rv, const char* pattern) {
+ std::string result;
+ int sfxcount = get_sfxcount(pattern);
+
+ if (get_sfxcount(HENTRY_DATA(rv)) > sfxcount)
+ return result;
+
+ if (HENTRY_DATA(rv)) {
+ std::string aff = pAMgr->morphgen(HENTRY_WORD(rv), rv->blen, rv->astr, rv->alen,
+ HENTRY_DATA(rv), pattern, 0);
+ if (!aff.empty()) {
+ result.append(aff);
+ result.push_back(MSEP_REC);
+ }
+ }
+
+ // check all allomorphs
+ char* p = NULL;
+ if (HENTRY_DATA(rv))
+ p = (char*)strstr(HENTRY_DATA2(rv), MORPH_ALLOMORPH);
+ while (p) {
+ p += MORPH_TAG_LEN;
+ int plen = fieldlen(p);
+ std::string allomorph(p, plen);
+ struct hentry* rv2 = pAMgr->lookup(allomorph.c_str());
+ while (rv2) {
+ // if (HENTRY_DATA(rv2) && get_sfxcount(HENTRY_DATA(rv2)) <=
+ // sfxcount) {
+ if (HENTRY_DATA(rv2)) {
+ char* st = (char*)strstr(HENTRY_DATA2(rv2), MORPH_STEM);
+ if (st && (strncmp(st + MORPH_TAG_LEN, HENTRY_WORD(rv),
+ fieldlen(st + MORPH_TAG_LEN)) == 0)) {
+ std::string aff = pAMgr->morphgen(HENTRY_WORD(rv2), rv2->blen, rv2->astr,
+ rv2->alen, HENTRY_DATA(rv2), pattern, 0);
+ if (!aff.empty()) {
+ result.append(aff);
+ result.push_back(MSEP_REC);
+ }
+ }
+ }
+ rv2 = rv2->next_homonym;
+ }
+ p = strstr(p + plen, MORPH_ALLOMORPH);
+ }
+
+ return result;
+}
+
+std::string SuggestMgr::suggest_gen(const std::vector<std::string>& desc, const std::string& in_pattern) {
+ if (desc.empty() || !pAMgr)
+ return std::string();
+
+ const char* pattern = in_pattern.c_str();
+ std::string result2;
+ std::string newpattern;
+ struct hentry* rv = NULL;
+
+ // search affixed forms with and without derivational suffixes
+ while (1) {
+ for (size_t k = 0; k < desc.size(); ++k) {
+ std::string result;
+
+ // add compound word parts (except the last one)
+ const char* s = desc[k].c_str();
+ const char* part = strstr(s, MORPH_PART);
+ if (part) {
+ const char* nextpart = strstr(part + 1, MORPH_PART);
+ while (nextpart) {
+ std::string field;
+ copy_field(field, part, MORPH_PART);
+ result.append(field);
+ part = nextpart;
+ nextpart = strstr(part + 1, MORPH_PART);
+ }
+ s = part;
+ }
+
+ std::string tok(s);
+ size_t pos = tok.find(" | ");
+ while (pos != std::string::npos) {
+ tok[pos + 1] = MSEP_ALT;
+ pos = tok.find(" | ", pos);
+ }
+ std::vector<std::string> pl = line_tok(tok, MSEP_ALT);
+ for (size_t i = 0; i < pl.size(); ++i) {
+ // remove inflectional and terminal suffixes
+ size_t is = pl[i].find(MORPH_INFL_SFX);
+ if (is != std::string::npos)
+ pl[i].resize(is);
+ size_t ts = pl[i].find(MORPH_TERM_SFX);
+ while (ts != std::string::npos) {
+ pl[i][ts] = '_';
+ ts = pl[i].find(MORPH_TERM_SFX);
+ }
+ const char* st = strstr(s, MORPH_STEM);
+ if (st) {
+ copy_field(tok, st, MORPH_STEM);
+ rv = pAMgr->lookup(tok.c_str());
+ while (rv) {
+ std::string newpat(pl[i]);
+ newpat.append(pattern);
+ std::string sg = suggest_hentry_gen(rv, newpat.c_str());
+ if (sg.empty())
+ sg = suggest_hentry_gen(rv, pattern);
+ if (!sg.empty()) {
+ std::vector<std::string> gen = line_tok(sg, MSEP_REC);
+ for (size_t j = 0; j < gen.size(); ++j) {
+ result2.push_back(MSEP_REC);
+ result2.append(result);
+ if (pl[i].find(MORPH_SURF_PFX) != std::string::npos) {
+ std::string field;
+ copy_field(field, pl[i], MORPH_SURF_PFX);
+ result2.append(field);
+ }
+ result2.append(gen[j]);
+ }
+ }
+ rv = rv->next_homonym;
+ }
+ }
+ }
+ }
+
+ if (!result2.empty() || !strstr(pattern, MORPH_DERI_SFX))
+ break;
+
+ newpattern.assign(pattern);
+ mystrrep(newpattern, MORPH_DERI_SFX, MORPH_TERM_SFX);
+ pattern = newpattern.c_str();
+ }
+ return result2;
+}
+
+// generate an n-gram score comparing s1 and s2, UTF16 version
+int SuggestMgr::ngram(int n,
+ const std::vector<w_char>& su1,
+ const std::vector<w_char>& su2,
+ int opt) {
+ int nscore = 0;
+ int ns;
+ int l1;
+ int l2;
+ int test = 0;
+
+ l1 = su1.size();
+ l2 = su2.size();
+ if (l2 == 0)
+ return 0;
+ for (int j = 1; j <= n; j++) {
+ ns = 0;
+ for (int i = 0; i <= (l1 - j); i++) {
+ int k = 0;
+ for (int l = 0; l <= (l2 - j); l++) {
+ for (k = 0; k < j; k++) {
+ const w_char& c1 = su1[i + k];
+ const w_char& c2 = su2[l + k];
+ if ((c1.l != c2.l) || (c1.h != c2.h))
+ break;
+ }
+ if (k == j) {
+ ns++;
+ break;
+ }
+ }
+ if (k != j && opt & NGRAM_WEIGHTED) {
+ ns--;
+ test++;
+ if (i == 0 || i == l1 - j)
+ ns--; // side weight
+ }
+ }
+ nscore = nscore + ns;
+ if (ns < 2 && !(opt & NGRAM_WEIGHTED))
+ break;
+ }
+
+ ns = 0;
+ if (opt & NGRAM_LONGER_WORSE)
+ ns = (l2 - l1) - 2;
+ if (opt & NGRAM_ANY_MISMATCH)
+ ns = abs(l2 - l1) - 2;
+ ns = (nscore - ((ns > 0) ? ns : 0));
+ return ns;
+}
+
+// generate an n-gram score comparing s1 and s2, non-UTF16 version
+int SuggestMgr::ngram(int n,
+ const std::string& s1,
+ const std::string& s2,
+ int opt) {
+ int nscore = 0;
+ int ns;
+ int l1;
+ int l2;
+ int test = 0;
+
+ l2 = s2.size();
+ if (l2 == 0)
+ return 0;
+ l1 = s1.size();
+ for (int j = 1; j <= n; j++) {
+ ns = 0;
+ for (int i = 0; i <= (l1 - j); i++) {
+ //s2 is haystack, s1[i..i+j) is needle
+ if (s2.find(s1.c_str()+i, 0, j) != std::string::npos) {
+ ns++;
+ } else if (opt & NGRAM_WEIGHTED) {
+ ns--;
+ test++;
+ if (i == 0 || i == l1 - j)
+ ns--; // side weight
+ }
+ }
+ nscore = nscore + ns;
+ if (ns < 2 && !(opt & NGRAM_WEIGHTED))
+ break;
+ }
+
+ ns = 0;
+ if (opt & NGRAM_LONGER_WORSE)
+ ns = (l2 - l1) - 2;
+ if (opt & NGRAM_ANY_MISMATCH)
+ ns = abs(l2 - l1) - 2;
+ ns = (nscore - ((ns > 0) ? ns : 0));
+ return ns;
+}
+
+// length of the left common substring of s1 and (decapitalised) s2, UTF version
+int SuggestMgr::leftcommonsubstring(
+ const std::vector<w_char>& su1,
+ const std::vector<w_char>& su2) {
+ int l1 = su1.size();
+ int l2 = su2.size();
+ // decapitalize dictionary word
+ if (complexprefixes) {
+ if (l1 && l2 && su1[l1 - 1] == su2[l2 - 1])
+ return 1;
+ } else {
+ unsigned short idx = su2.empty() ? 0 : (su2[0].h << 8) + su2[0].l;
+ unsigned short otheridx = su1.empty() ? 0 : (su1[0].h << 8) + su1[0].l;
+ if (otheridx != idx && (otheridx != unicodetolower(idx, langnum)))
+ return 0;
+ int i;
+ for (i = 1; (i < l1) && (i < l2) && (su1[i].l == su2[i].l) &&
+ (su1[i].h == su2[i].h);
+ i++)
+ ;
+ return i;
+ }
+ return 0;
+}
+
+// length of the left common substring of s1 and (decapitalised) s2, non-UTF
+int SuggestMgr::leftcommonsubstring(
+ const char* s1,
+ const char* s2) {
+ if (complexprefixes) {
+ int l1 = strlen(s1);
+ int l2 = strlen(s2);
+ if (l1 <= l2 && s2[l1 - 1] == s2[l2 - 1])
+ return 1;
+ } else if (csconv) {
+ const char* olds = s1;
+ // decapitalise dictionary word
+ if ((*s1 != *s2) && (*s1 != csconv[((unsigned char)*s2)].clower))
+ return 0;
+ do {
+ s1++;
+ s2++;
+ } while ((*s1 == *s2) && (*s1 != '\0'));
+ return (int)(s1 - olds);
+ }
+ return 0;
+}
+
+int SuggestMgr::commoncharacterpositions(const char* s1,
+ const char* s2,
+ int* is_swap) {
+ int num = 0;
+ int diff = 0;
+ int diffpos[2];
+ *is_swap = 0;
+ if (utf8) {
+ std::vector<w_char> su1;
+ std::vector<w_char> su2;
+ int l1 = u8_u16(su1, s1);
+ int l2 = u8_u16(su2, s2);
+
+ if (l1 <= 0 || l2 <= 0)
+ return 0;
+
+ // decapitalize dictionary word
+ if (complexprefixes) {
+ su2[l2 - 1] = lower_utf(su2[l2 - 1], langnum);
+ } else {
+ su2[0] = lower_utf(su2[0], langnum);
+ }
+ for (int i = 0; (i < l1) && (i < l2); i++) {
+ if (su1[i] == su2[i]) {
+ num++;
+ } else {
+ if (diff < 2)
+ diffpos[diff] = i;
+ diff++;
+ }
+ }
+ if ((diff == 2) && (l1 == l2) &&
+ (su1[diffpos[0]] == su2[diffpos[1]]) &&
+ (su1[diffpos[1]] == su2[diffpos[0]]))
+ *is_swap = 1;
+ } else {
+ size_t i;
+ std::string t(s2);
+ // decapitalize dictionary word
+ if (complexprefixes) {
+ size_t l2 = t.size();
+ t[l2 - 1] = csconv[(unsigned char)t[l2 - 1]].clower;
+ } else {
+ mkallsmall(t, csconv);
+ }
+ for (i = 0; i < t.size() && (*(s1 + i) != 0); ++i) {
+ if (*(s1 + i) == t[i]) {
+ num++;
+ } else {
+ if (diff < 2)
+ diffpos[diff] = i;
+ diff++;
+ }
+ }
+ if ((diff == 2) && (*(s1 + i) == 0) && i == t.size() &&
+ (*(s1 + diffpos[0]) == t[diffpos[1]]) &&
+ (*(s1 + diffpos[1]) == t[diffpos[0]]))
+ *is_swap = 1;
+ }
+ return num;
+}
+
+int SuggestMgr::mystrlen(const char* word) {
+ if (utf8) {
+ std::vector<w_char> w;
+ return u8_u16(w, word);
+ } else
+ return strlen(word);
+}
+
+// sort in decreasing order of score
+void SuggestMgr::bubblesort(char** rword, char** rword2, int* rsc, int n) {
+ int m = 1;
+ while (m < n) {
+ int j = m;
+ while (j > 0) {
+ if (rsc[j - 1] < rsc[j]) {
+ int sctmp = rsc[j - 1];
+ char* wdtmp = rword[j - 1];
+ rsc[j - 1] = rsc[j];
+ rword[j - 1] = rword[j];
+ rsc[j] = sctmp;
+ rword[j] = wdtmp;
+ if (rword2) {
+ wdtmp = rword2[j - 1];
+ rword2[j - 1] = rword2[j];
+ rword2[j] = wdtmp;
+ }
+ j--;
+ } else
+ break;
+ }
+ m++;
+ }
+ return;
+}
+
+// longest common subsequence
+void SuggestMgr::lcs(const char* s,
+ const char* s2,
+ int* l1,
+ int* l2,
+ char** result) {
+ int n, m;
+ std::vector<w_char> su;
+ std::vector<w_char> su2;
+ char* b;
+ char* c;
+ int i;
+ int j;
+ if (utf8) {
+ m = u8_u16(su, s);
+ n = u8_u16(su2, s2);
+ } else {
+ m = strlen(s);
+ n = strlen(s2);
+ }
+ c = (char*)malloc((m + 1) * (n + 1));
+ b = (char*)malloc((m + 1) * (n + 1));
+ if (!c || !b) {
+ if (c)
+ free(c);
+ if (b)
+ free(b);
+ *result = NULL;
+ return;
+ }
+ for (i = 1; i <= m; i++)
+ c[i * (n + 1)] = 0;
+ for (j = 0; j <= n; j++)
+ c[j] = 0;
+ for (i = 1; i <= m; i++) {
+ for (j = 1; j <= n; j++) {
+ if (((utf8) && (su[i - 1] == su2[j - 1])) ||
+ ((!utf8) && (s[i - 1] == s2[j - 1]))) {
+ c[i * (n + 1) + j] = c[(i - 1) * (n + 1) + j - 1] + 1;
+ b[i * (n + 1) + j] = LCS_UPLEFT;
+ } else if (c[(i - 1) * (n + 1) + j] >= c[i * (n + 1) + j - 1]) {
+ c[i * (n + 1) + j] = c[(i - 1) * (n + 1) + j];
+ b[i * (n + 1) + j] = LCS_UP;
+ } else {
+ c[i * (n + 1) + j] = c[i * (n + 1) + j - 1];
+ b[i * (n + 1) + j] = LCS_LEFT;
+ }
+ }
+ }
+ *result = b;
+ free(c);
+ *l1 = m;
+ *l2 = n;
+}
+
+int SuggestMgr::lcslen(const char* s, const char* s2) {
+ int m;
+ int n;
+ int i;
+ int j;
+ char* result;
+ int len = 0;
+ lcs(s, s2, &m, &n, &result);
+ if (!result)
+ return 0;
+ i = m;
+ j = n;
+ while ((i != 0) && (j != 0)) {
+ if (result[i * (n + 1) + j] == LCS_UPLEFT) {
+ len++;
+ i--;
+ j--;
+ } else if (result[i * (n + 1) + j] == LCS_UP) {
+ i--;
+ } else
+ j--;
+ }
+ free(result);
+ return len;
+}
+
+int SuggestMgr::lcslen(const std::string& s, const std::string& s2) {
+ return lcslen(s.c_str(), s2.c_str());
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 16:26:42 +0000