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/* enchant
* Copyright (C) 2022 Dimitrij Mijoski
* Copyright (C) 2020 Sander van Geloven
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders
* give permission to link the code of this program with
* non-LGPL Spelling Provider libraries (eg: a MSFT Office
* spell checker backend) and distribute linked combinations including
* the two. You must obey the GNU General Public License in all
* respects for all of the code used other than said providers. If you modify
* this file, you may extend this exception to your version of the
* file, but you are not obligated to do so. If you do not wish to
* do so, delete this exception statement from your version.
*/
/*
* This is the Nuspell Enchant Backend.
* Nuspell is by Dimitrij Mijoski and Sander van Geloven.
* See: http://nuspell.github.io/
*/
#include "config.h"
#include <memory>
#include "enchant-provider.h"
#include <nuspell/dictionary.hxx>
#include <nuspell/finder.hxx>
#include <glib.h>
using namespace std;
// EnchantDict functions
static int nuspell_dict_check(EnchantDict* me, const char* const word,
size_t len)
{
auto dict = static_cast<nuspell::Dictionary*>(me->user_data);
using UniquePtr = unique_ptr<char[], decltype(&g_free)>;
auto normalized_word =
UniquePtr(g_utf8_normalize(word, len, G_NORMALIZE_NFC), g_free);
return !dict->spell(normalized_word.get());
}
static char** nuspell_dict_suggest(EnchantDict* me, const char* const word,
size_t len, size_t* out_n_suggs)
{
auto dict = static_cast<nuspell::Dictionary*>(me->user_data);
using UniquePtr = unique_ptr<char[], decltype(&g_free)>;
// the 8-bit encodings use precomposed forms
auto normalized_word =
UniquePtr(g_utf8_normalize(word, len, G_NORMALIZE_NFC), g_free);
auto suggestions = vector<string>();
dict->suggest(normalized_word.get(), suggestions);
if (empty(suggestions)) {
*out_n_suggs = 0;
return nullptr;
}
char** sug_list = g_new0(char*, size(suggestions) + 1);
transform(begin(suggestions), end(suggestions), sug_list,
[](const string& sug) { return g_strdup(sug.c_str()); });
*out_n_suggs = size(suggestions);
return sug_list;
}
// End EnchantDict functions
// EnchantProvider functions
static void nuspell_provider_dispose(EnchantProvider* me) { g_free(me); }
static EnchantDict*
nuspell_provider_request_dict(_GL_UNUSED EnchantProvider* me,
const char* const tag)
{
auto dirs = vector<filesystem::path>();
nuspell::append_default_dir_paths(dirs);
auto dic_path = nuspell::search_dirs_for_one_dict(dirs, tag);
if (empty(dic_path))
return nullptr;
auto dict_cpp = make_unique<nuspell::Dictionary>();
try {
dict_cpp->load_aff_dic(dic_path);
}
catch (const nuspell::Dictionary_Loading_Error&) {
return nullptr;
}
EnchantDict* dict = g_new0(EnchantDict, 1);
dict->user_data = static_cast<void*>(dict_cpp.release());
dict->check = nuspell_dict_check;
dict->suggest = nuspell_dict_suggest;
return dict;
}
static void nuspell_provider_dispose_dict(_GL_UNUSED EnchantProvider* me,
EnchantDict* dict)
{
auto dict_cpp = static_cast<nuspell::Dictionary*>(dict->user_data);
delete dict_cpp;
g_free(dict);
}
static int
nuspell_provider_dictionary_exists(_GL_UNUSED EnchantProvider* me,
const char* const tag)
{
auto dirs = vector<filesystem::path>();
nuspell::append_default_dir_paths(dirs);
auto dic_path = nuspell::search_dirs_for_one_dict(dirs, tag);
return !empty(dic_path);
}
static const char*
nuspell_provider_identify(_GL_UNUSED EnchantProvider* me)
{
return "nuspell";
}
static const char*
nuspell_provider_describe(_GL_UNUSED EnchantProvider* me)
{
return "Nuspell Provider";
}
static char**
nuspell_provider_list_dicts(_GL_UNUSED EnchantProvider* me,
size_t* out_n_dicts)
{
auto dicts = nuspell::search_default_dirs_for_dicts();
if (empty(dicts)) {
*out_n_dicts = 0;
return nullptr;
}
for (auto& d : dicts)
d = d.stem();
sort(begin(dicts), end(dicts));
auto it = unique(begin(dicts), end(dicts));
it = remove_if(begin(dicts), it, [](const filesystem::path& p) {
auto& n = p.native();
return any_of(begin(n), end(n),
[](auto c) { return c < 0 || c > 127; });
});
dicts.erase(it, end(dicts));
char** dictionary_list = g_new0(char*, size(dicts) + 1);
transform(begin(dicts), end(dicts), dictionary_list,
[](const filesystem::path& p) {
return g_strdup(p.string().c_str());
});
*out_n_dicts = size(dicts);
return dictionary_list;
}
extern "C" EnchantProvider* init_enchant_provider(void);
EnchantProvider *
init_enchant_provider (void)
{
EnchantProvider *provider = g_new0(EnchantProvider, 1);
provider->dispose = nuspell_provider_dispose;
provider->request_dict = nuspell_provider_request_dict;
provider->dispose_dict = nuspell_provider_dispose_dict;
provider->dictionary_exists = nuspell_provider_dictionary_exists;
provider->identify = nuspell_provider_identify;
provider->describe = nuspell_provider_describe;
provider->list_dicts = nuspell_provider_list_dicts;
return provider;
}
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