294 lines
6.9 KiB
C++
294 lines
6.9 KiB
C++
/* HexChat
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* Copyright (c) 2015 Patrick Griffis
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include <Spellcheck.h>
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#include <glib.h>
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#include "typedef.h" // for ssize_t
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#include <enchant-provider.h>
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ENCHANT_PLUGIN_DECLARE ("win8")
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/* --------- Utils ----------*/
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static char *
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utf16_to_utf8 (const wchar_t * const str, gboolean from_bcp47)
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{
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char *utf8 = g_utf16_to_utf8 ((gunichar2*)str, -1, nullptr, nullptr, nullptr);
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if (utf8 && from_bcp47)
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{
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char *p = utf8;
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/* bcp47 tags use syntax "en-US" while the myspell versions are "en_US" */
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while (*p)
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{
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if (*p == '-')
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*p = '_';
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p++;
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}
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}
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return utf8;
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}
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static wchar_t *
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utf8_to_utf16 (const char * const str, size_t len, gboolean to_bcp47)
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{
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wchar_t *utf16 = (wchar_t*)g_utf8_to_utf16 (str, len, nullptr, nullptr, nullptr);
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if (utf16 && to_bcp47)
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{
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wchar_t *p = utf16;
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/* bcp47 tags use syntax "en-US" while the myspell versions are "en_US" */
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while (*p)
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{
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if (*p == L'_')
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*p = L'-';
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p++;
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}
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}
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return utf16;
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}
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static char **
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enumstring_to_chararray (IEnumString *strings, size_t *out_len, gboolean from_bcp47)
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{
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char **chars = g_new (char*, 256); /* Hopefully large enough */
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LPOLESTR wstr = nullptr;
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size_t i = 0;
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while (SUCCEEDED (strings->Next (1, &wstr, nullptr)) && i < 256 && wstr)
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{
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char *str = utf16_to_utf8 (wstr, from_bcp47);
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if (str)
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{
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chars[i] = str;
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i++;
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}
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CoTaskMemFree (wstr);
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}
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chars[i] = nullptr;
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strings->Release ();
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*out_len = i;
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return chars;
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}
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/* ---------- Dict ------------ */
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static void
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win8_dict_add_to_personal (EnchantDict *dict, const char *const word, size_t len)
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{
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auto checker = static_cast<ISpellChecker*>(dict->user_data);
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wchar_t *wword = utf8_to_utf16 (word, len, FALSE);
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checker->Add (wword);
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g_free (wword);
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}
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static void
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win8_dict_add_to_session (EnchantDict *dict, const char *const word, size_t len)
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{
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auto checker = static_cast<ISpellChecker*>(dict->user_data);
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wchar_t *wword = utf8_to_utf16 (word, len, FALSE);
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checker->Ignore (wword);
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g_free (wword);
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}
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static int
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win8_dict_check (EnchantDict *dict, const char *const word, size_t len)
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{
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auto checker = static_cast<ISpellChecker*>(dict->user_data);
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wchar_t *wword = utf8_to_utf16 (word, len, FALSE);
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IEnumSpellingError *errors;
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ISpellingError *error = nullptr;
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HRESULT hr;
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hr = checker->Check (wword, &errors);
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g_free (wword);
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if (FAILED (hr))
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return -1; /* Error */
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if (errors->Next (&error) == S_OK)
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{
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error->Release ();
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errors->Release ();
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return 1; /* Spelling Issue */
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}
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else
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{
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errors->Release ();
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return 0; /* Correct */
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}
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}
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static char **
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win8_dict_suggest (EnchantDict *dict, const char *const word, size_t len, size_t *out_n_suggs)
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{
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auto checker = static_cast<ISpellChecker*>(dict->user_data);
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wchar_t *wword = utf8_to_utf16 (word, len, FALSE);
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IEnumString *suggestions;
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HRESULT hr;
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hr = checker->Suggest (wword, &suggestions);
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g_free (wword);
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if (FAILED (hr))
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{
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*out_n_suggs = 0;
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return nullptr;
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}
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return enumstring_to_chararray (suggestions, out_n_suggs, FALSE);
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}
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/* ---------- Provider ------------ */
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static EnchantDict *
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win8_provider_request_dict (EnchantProvider *provider, const char *const tag)
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{
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auto factory = static_cast<ISpellCheckerFactory*>(provider->user_data);
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ISpellChecker *checker;
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EnchantDict *dict;
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wchar_t *wtag = utf8_to_utf16 (tag, -1, TRUE);
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HRESULT hr;
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hr = factory->CreateSpellChecker (wtag, &checker);
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g_free (wtag);
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if (FAILED (hr))
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return nullptr;
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dict = g_new0 (EnchantDict, 1);
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dict->suggest = win8_dict_suggest;
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dict->check = win8_dict_check;
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dict->add_to_personal = win8_dict_add_to_personal;
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dict->add_to_exclude = win8_dict_add_to_personal; /* Basically the same */
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dict->add_to_session = win8_dict_add_to_session;
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dict->user_data = checker;
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return dict;
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}
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static void
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win8_provider_dispose_dict (EnchantProvider *provider, EnchantDict *dict)
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{
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if (dict)
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{
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auto checker = static_cast<ISpellChecker*>(dict->user_data);
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checker->Release ();
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g_free (dict);
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}
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}
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static int
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win8_provider_dictionary_exists (EnchantProvider *provider, const char *const tag)
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{
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auto factory = static_cast<ISpellCheckerFactory*>(provider->user_data);
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wchar_t *wtag = utf8_to_utf16 (tag, -1, TRUE);
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BOOL is_supported = FALSE;
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factory->IsSupported (wtag, &is_supported);
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g_free (wtag);
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return is_supported;
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}
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static char **
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win8_provider_list_dicts (EnchantProvider *provider, size_t *out_n_dicts)
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{
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auto factory = static_cast<ISpellCheckerFactory*>(provider->user_data);
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IEnumString *dicts;
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if (FAILED(factory->get_SupportedLanguages (&dicts)))
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{
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*out_n_dicts = 0;
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return nullptr;
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}
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return enumstring_to_chararray (dicts, out_n_dicts, TRUE);
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}
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static void
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win8_provider_free_string_list (EnchantProvider *provider, char **str_list)
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{
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g_strfreev (str_list);
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}
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static void
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win8_provider_dispose (EnchantProvider *provider)
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{
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if (provider)
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{
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auto factory = static_cast<ISpellCheckerFactory*>(provider->user_data);
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factory->Release();
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g_free (provider);
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}
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}
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static const char *
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win8_provider_identify (EnchantProvider *provider)
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{
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return "win8";
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}
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static const char *
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win8_provider_describe (EnchantProvider *provider)
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{
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return "Windows 8 SpellCheck Provider";
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}
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extern "C"
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{
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EnchantProvider *
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init_enchant_provider (void)
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{
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EnchantProvider *provider;
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ISpellCheckerFactory *factory;
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if (FAILED (CoCreateInstance (__uuidof(SpellCheckerFactory), nullptr,
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CLSCTX_INPROC_SERVER, IID_PPV_ARGS (&factory))))
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return nullptr;
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provider = g_new0 (EnchantProvider, 1);
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provider->dispose = win8_provider_dispose;
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provider->request_dict = win8_provider_request_dict;
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provider->dispose_dict = win8_provider_dispose_dict;
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provider->dictionary_exists = win8_provider_dictionary_exists;
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provider->identify = win8_provider_identify;
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provider->describe = win8_provider_describe;
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provider->list_dicts = win8_provider_list_dicts;
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provider->free_string_list = win8_provider_free_string_list;
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provider->user_data = factory;
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return provider;
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}
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}
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