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Diffstat (limited to 'lingucomponent/source/languageguessing/guess.cxx')
-rw-r--r-- | lingucomponent/source/languageguessing/guess.cxx | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lingucomponent/source/languageguessing/guess.cxx b/lingucomponent/source/languageguessing/guess.cxx new file mode 100644 index 000000000..a7cbeccab --- /dev/null +++ b/lingucomponent/source/languageguessing/guess.cxx @@ -0,0 +1,100 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/config.h> + +#include <cassert> +#include <string.h> + +#ifdef SYSTEM_LIBEXTTEXTCAT +#include <libexttextcat/textcat.h> +#else +#include <textcat.h> +#endif + +#include "guess.hxx" + +/* Old textcat.h versions defined bad spelled constants. */ +#ifndef TEXTCAT_RESULT_UNKNOWN_STR +#define TEXTCAT_RESULT_UNKNOWN_STR _TEXTCAT_RESULT_UNKOWN +#endif + +#ifndef TEXTCAT_RESULT_SHORT_STR +#define TEXTCAT_RESULT_SHORT_STR _TEXTCAT_RESULT_SHORT +#endif + +Guess::Guess() + : language_str(DEFAULT_LANGUAGE) + , country_str(DEFAULT_COUNTRY) +{ +} + +/* +* this use a char * string to build the guess object +* a string like those is made as : [language-country-encoding]... +* +*/ +Guess::Guess(const char * guess_str) + : language_str(DEFAULT_LANGUAGE) + , country_str(DEFAULT_COUNTRY) +{ + //if the guess is not like "UNKNOWN" or "SHORT", go into the brackets + if(strcmp(guess_str + 1, TEXTCAT_RESULT_UNKNOWN_STR) == 0 + || strcmp(guess_str + 1, TEXTCAT_RESULT_SHORT_STR) == 0) + return; + + // From how this ctor is called from SimpleGuesser::GuessLanguage and + // SimpleGuesser::GetManagedLanguages in + // lingucomponent/source/languageguessing/simpleguesser.cxx, guess_str must start with "[": + assert(guess_str[0] == GUESS_SEPARATOR_OPEN); + auto const start = guess_str + 1; + // Only look at the prefix of guess_str, delimited by the next "]" or "[" or end-of-string; + // split it into at most three segments separated by "-" (where excess occurrences of "-" + // would become part of the third segment), like "en-US-utf8"; the first segment denotes the + // language; if there are three segments, the second denotes the country and the third the + // encoding; otherwise, the second segment, if any (e.g., in "haw-utf8"), denotes the + // encoding: + char const * dash1 = nullptr; + char const * dash2 = nullptr; + auto p = start; + for (;; ++p) { + auto const c = *p; + if (c == '\0' || c == GUESS_SEPARATOR_OPEN || c == GUESS_SEPARATOR_CLOSE) { + break; + } + if (c == GUESS_SEPARATOR_SEP) { + if (dash1 == nullptr) { + dash1 = p; + } else { + dash2 = p; + // The encoding is ignored, so we can stop as soon as we found the second "-": + break; + } + } + } + auto const langLen = (dash1 == nullptr ? p : dash1) - start; + if (langLen != 0) { // if not we use the default value + language_str.assign(start, langLen); + } + if (dash2 != nullptr) { + country_str.assign(dash1 + 1, dash2 - (dash1 + 1)); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |