202 lines
7.0 KiB
C++
202 lines
7.0 KiB
C++
/*
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Copyright 2015-2016 Amebis
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This file is part of ZRCola.
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ZRCola is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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ZRCola is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ZRCola. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "stdafx.h"
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ZRCola::DBSource::DBSource()
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{
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}
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ZRCola::DBSource::~DBSource()
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{
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if (m_db)
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m_db->Close();
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}
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bool ZRCola::DBSource::Open(LPCTSTR _filename)
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{
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wxASSERT_MSG(!m_db, wxT("database already open"));
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// Create COM object.
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HRESULT hr = ::CoCreateInstance(CLSID_CADOConnection, NULL, CLSCTX_ALL, IID_IADOConnection, (LPVOID*)&m_db);
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if (SUCCEEDED(hr)) {
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// Open the database.
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std::wstring cn;
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cn = L"Driver={Microsoft Access Driver (*.mdb)};";
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cn += L"Dbq=";
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cn += _filename;
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cn += L";Uid=;Pwd=;";
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hr = m_db->Open(ATL::CComBSTR(cn.c_str()));
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if (SUCCEEDED(hr)) {
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// Database open and ready.
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filename = _filename;
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return true;
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} else {
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_ftprintf(stderr, wxT("%s: error ZCC0011: Could not open database (0x%x).\n"), (LPCTSTR)_filename, hr);
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LogErrors();
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}
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m_db.Release();
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} else
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_ftprintf(stderr, wxT("%s: error ZCC0012: Creating ADOConnection object failed (0x%x).\n"), (LPCTSTR)_filename, hr);
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return false;
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}
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void ZRCola::DBSource::LogErrors() const
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{
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wxASSERT_MSG(m_db, wxT("database does not exist"));
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// Get array of errors.
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ADOErrors *errors = NULL;
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if (SUCCEEDED(m_db->get_Errors(&errors))) {
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// Get number of errors.
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long n = 0;
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wxVERIFY(SUCCEEDED(errors->get_Count(&n)));
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// Iterate the errors.
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for (long i = 0; i < n; i++) {
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ADOError *err = NULL;
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if (SUCCEEDED(errors->get_Item(ATL::CComVariant(i), &err))) {
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// Write error number and description to the log.
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long num = 0;
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wxVERIFY(SUCCEEDED(err->get_Number(&num)));
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ATL::CComBSTR desc;
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wxVERIFY(SUCCEEDED(err->get_Description(&desc)));
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_ftprintf(stderr, wxT(" error ADO%x: %ls\n"), num, (BSTR)desc);
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err->Release();
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}
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}
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errors->Release();
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}
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}
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bool ZRCola::DBSource::GetUnicodeString(const CComPtr<ADOField>& f, std::wstring& str) const
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{
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wxASSERT_MSG(f, wxT("field is empty"));
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CComVariant v;
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wxVERIFY(SUCCEEDED(f->get_Value(&v)));
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// Parse the field. Must be "xxxx+xxxx+xxxx..." sequence.
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wxVERIFY(SUCCEEDED(v.ChangeType(VT_BSTR)));
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str.clear();
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for (UINT i = 0, n = ::SysStringLen(V_BSTR(&v)); i < n && V_BSTR(&v)[i];) {
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// Parse Unicode code.
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UINT j = 0;
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wchar_t c = 0;
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for (; i < n && V_BSTR(&v)[i]; i++, j++) {
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if (L'0' <= V_BSTR(&v)[i] && V_BSTR(&v)[i] <= L'9') c = c*0x10 + (V_BSTR(&v)[i] - L'0');
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else if (L'A' <= V_BSTR(&v)[i] && V_BSTR(&v)[i] <= L'F') c = c*0x10 + (V_BSTR(&v)[i] - L'A' + 10);
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else if (L'a' <= V_BSTR(&v)[i] && V_BSTR(&v)[i] <= L'f') c = c*0x10 + (V_BSTR(&v)[i] - L'a' + 10);
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else break;
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}
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if (j <= 0 || 4 < j) {
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CComBSTR fieldname; wxVERIFY(SUCCEEDED(f->get_Name(&fieldname)));
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_ftprintf(stderr, wxT("%s: error ZCC0020: Syntax error in \"%.*ls\" field (\"%.*ls\"). Unicode code must be one to four hexadecimal characters long.\n"), filename.c_str(), fieldname.Length(), (BSTR)fieldname, n, V_BSTR(&v));
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return false;
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}
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str += c;
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// Skip delimiter(s) and whitespace.
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for (; i < n && V_BSTR(&v)[i] && (V_BSTR(&v)[i] == L'+' || iswspace(V_BSTR(&v)[i])); i++);
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}
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return true;
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}
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bool ZRCola::DBSource::GetUnicodeCharacter(const CComPtr<ADOField>& f, wchar_t& chr) const
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{
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wxASSERT_MSG(f, wxT("field is empty"));
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CComVariant v;
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wxVERIFY(SUCCEEDED(f->get_Value(&v)));
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// Parse the field. Must be exactly one Unicode code.
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wxVERIFY(SUCCEEDED(v.ChangeType(VT_BSTR)));
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UINT i = 0, n = ::SysStringLen(V_BSTR(&v));
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chr = 0;
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for (; i < n && V_BSTR(&v)[i]; i++) {
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if (L'0' <= V_BSTR(&v)[i] && V_BSTR(&v)[i] <= L'9') chr = chr*0x10 + (V_BSTR(&v)[i] - L'0');
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else if (L'A' <= V_BSTR(&v)[i] && V_BSTR(&v)[i] <= L'F') chr = chr*0x10 + (V_BSTR(&v)[i] - L'A' + 10);
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else if (L'a' <= V_BSTR(&v)[i] && V_BSTR(&v)[i] <= L'f') chr = chr*0x10 + (V_BSTR(&v)[i] - L'a' + 10);
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else break;
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}
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if (i <= 0 && 4 < i) {
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CComBSTR fieldname; wxVERIFY(SUCCEEDED(f->get_Name(&fieldname)));
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_ftprintf(stderr, wxT("%s: error ZCC0030: Syntax error in \"%.*ls\" field (\"%.*ls\"). Unicode code must be one to four hexadecimal characters long.\n"), filename.c_str(), fieldname.Length(), (BSTR)fieldname, n, V_BSTR(&v));
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return false;
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} else if (i != n) {
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CComBSTR fieldname; wxVERIFY(SUCCEEDED(f->get_Name(&fieldname)));
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_ftprintf(stderr, wxT("%s: error ZCC0031: Syntax error in \"%.*ls\" field (\"%.*ls\"). Extra trailing characters.\n"), filename.c_str(), fieldname.Length(), (BSTR)fieldname, n, V_BSTR(&v));
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return false;
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}
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return true;
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}
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bool ZRCola::DBSource::SelectTranslations(ATL::CComPtr<ADORecordset> &rs) const
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{
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// Create a new recordset.
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if (rs) rs.Release();
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wxCHECK(SUCCEEDED(::CoCreateInstance(CLSID_CADORecordset, NULL, CLSCTX_ALL, IID_IADORecordset, (LPVOID*)&rs)), false);
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// Open it.
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if (FAILED(rs->Open(ATL::CComVariant(L"SELECT [komb], [znak] FROM [VRS_ReplChar] WHERE [rang_komb]=1"), ATL::CComVariant(m_db), adOpenStatic, adLockReadOnly, adCmdText))) {
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_ftprintf(stderr, wxT("%s: error ZCC0040: Error loading compositions from database. Please make sure the file is ZRCola.zrc compatible.\n"), filename.c_str());
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LogErrors();
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return false;
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}
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return true;
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}
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bool ZRCola::DBSource::GetTranslation(const ATL::CComPtr<ADORecordset>& rs, ZRCola::DBSource::translation& t) const
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{
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wxASSERT_MSG(rs, wxT("recordset is empty"));
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CComPtr<ADOFields> flds;
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wxVERIFY(SUCCEEDED(rs->get_Fields(&flds)));
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{
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CComPtr<ADOField> f;
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wxVERIFY(SUCCEEDED(flds->get_Item(CComVariant(L"komb"), &f)));
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wxCHECK(GetUnicodeString(f, t.str), false);
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}
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{
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CComPtr<ADOField> f;
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wxVERIFY(SUCCEEDED(flds->get_Item(CComVariant(L"znak"), &f)));
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wxCHECK(GetUnicodeCharacter(f, t.chr), false);
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}
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return true;
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}
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