67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file autocompletion.cpp Generic auto-completion engine. */
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#include "stdafx.h"
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#include "autocompletion.h"
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#include "console_internal.h"
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#include "town.h"
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#include "network/network_base.h"
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#include "safeguards.h"
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bool AutoCompletion::AutoComplete()
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{
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// We are pressing TAB for the first time after reset.
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if (this->suggestions.empty()) {
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this->InitSuggestions(this->textbuf->buf);
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if (this->suggestions.empty()) {
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return false;
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}
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this->ApplySuggestion(prefix, suggestions[0]);
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return true;
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}
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// We are pressing TAB again on the same text.
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if (this->current_suggestion_index + 1 < this->suggestions.size()) {
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this->ApplySuggestion(prefix, this->suggestions[++this->current_suggestion_index]);
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} else {
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// We are out of options, restore original text.
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this->textbuf->Assign(initial_buf);
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this->Reset();
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}
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return true;
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}
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void AutoCompletion::Reset()
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{
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this->prefix = "";
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this->query = "";
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this->initial_buf.clear();
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this->suggestions.clear();
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this->current_suggestion_index = 0;
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}
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void AutoCompletion::InitSuggestions(std::string_view text)
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{
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this->initial_buf = text;
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size_t space_pos = this->initial_buf.find_last_of(' ');
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this->query = this->initial_buf;
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if (space_pos == std::string::npos) {
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this->prefix = "";
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} else {
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this->prefix = this->query.substr(0, space_pos + 1);
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this->query.remove_prefix(space_pos + 1);
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}
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this->suggestions = this->GetSuggestions(prefix, query);
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this->current_suggestion_index = 0;
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}
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