100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <cassert>
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#include <string.h>
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#ifdef SYSTEM_LIBEXTTEXTCAT
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#include <libexttextcat/textcat.h>
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#else
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#include <textcat.h>
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#endif
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#include "guess.hxx"
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/* Old textcat.h versions defined bad spelled constants. */
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#ifndef TEXTCAT_RESULT_UNKNOWN_STR
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#define TEXTCAT_RESULT_UNKNOWN_STR _TEXTCAT_RESULT_UNKOWN
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#endif
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#ifndef TEXTCAT_RESULT_SHORT_STR
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#define TEXTCAT_RESULT_SHORT_STR _TEXTCAT_RESULT_SHORT
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#endif
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Guess::Guess()
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: language_str(DEFAULT_LANGUAGE)
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, country_str(DEFAULT_COUNTRY)
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{
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}
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/*
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* this use a char * string to build the guess object
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* a string like those is made as : [language-country-encoding]...
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*
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*/
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Guess::Guess(const char * guess_str)
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: language_str(DEFAULT_LANGUAGE)
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, country_str(DEFAULT_COUNTRY)
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{
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//if the guess is not like "UNKNOWN" or "SHORT", go into the brackets
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if(strcmp(guess_str + 1, TEXTCAT_RESULT_UNKNOWN_STR) == 0
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|| strcmp(guess_str + 1, TEXTCAT_RESULT_SHORT_STR) == 0)
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return;
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// From how this ctor is called from SimpleGuesser::GuessLanguage and
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// SimpleGuesser::GetManagedLanguages in
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// lingucomponent/source/languageguessing/simpleguesser.cxx, guess_str must start with "[":
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assert(guess_str[0] == GUESS_SEPARATOR_OPEN);
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auto const start = guess_str + 1;
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// Only look at the prefix of guess_str, delimited by the next "]" or "[" or end-of-string;
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// split it into at most three segments separated by "-" (where excess occurrences of "-"
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// would become part of the third segment), like "en-US-utf8"; the first segment denotes the
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// language; if there are three segments, the second denotes the country and the third the
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// encoding; otherwise, the second segment, if any (e.g., in "haw-utf8"), denotes the
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// encoding:
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char const * dash1 = nullptr;
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char const * dash2 = nullptr;
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auto p = start;
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for (;; ++p) {
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auto const c = *p;
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if (c == '\0' || c == GUESS_SEPARATOR_OPEN || c == GUESS_SEPARATOR_CLOSE) {
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break;
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}
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if (c == GUESS_SEPARATOR_SEP) {
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if (dash1 == nullptr) {
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dash1 = p;
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} else {
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dash2 = p;
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// The encoding is ignored, so we can stop as soon as we found the second "-":
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break;
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}
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}
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}
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auto const langLen = (dash1 == nullptr ? p : dash1) - start;
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if (langLen != 0) { // if not we use the default value
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language_str.assign(start, langLen);
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}
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if (dash2 != nullptr) {
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country_str.assign(dash1 + 1, dash2 - (dash1 + 1));
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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