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