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-rw-r--r--src/Makefile.am10
-rw-r--r--src/translation.cc287
-rw-r--r--src/translation.h60
3 files changed, 356 insertions, 1 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index f2a392d..b656f48 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,11 @@
-noinst_LTLIBRARIES = libdg.la libzr.la libpugi.la
+noinst_LTLIBRARIES = libdg.la libzr.la libpugi.la libnls.la
+
+# shared nls component
+
+libnls_la_CPPFLAGS =
+libnls_la_LIBADD =
+libnls_la_SOURCES = \
+ translation.cc
# libzita-resampler
@@ -129,6 +136,7 @@ EXTRA_DIST = \
staminafilter.h \
syncedsettings.h \
thread.h \
+ translation.h \
velocityfilter.h \
versionstr.h \
zrwrapper.h
diff --git a/src/translation.cc b/src/translation.cc
new file mode 100644
index 0000000..18763e4
--- /dev/null
+++ b/src/translation.cc
@@ -0,0 +1,287 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ * translation.cc
+ *
+ * Sun Sep 8 14:13:22 CEST 2019
+ * Copyright 2019 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "translation.h"
+
+#ifdef WITH_NLS
+
+#include <locale.h>
+#include <vector>
+#include <mutex>
+#include <string>
+#include <atomic>
+#include <algorithm>
+#include <utility>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+namespace
+{
+using Text = std::pair<std::uint64_t, std::string>;
+using Texts = std::vector<Text>;
+
+struct
+{
+ std::mutex mutex;
+ int refcnt{0};
+ Texts texts;
+} singleton;
+
+
+bool comparator(const Text& a, const Text& b)
+{
+ return a.first < b.first;
+}
+}
+
+Translation::Translation()
+{
+ std::lock_guard<std::mutex>(singleton.mutex);
+ ++singleton.refcnt;
+}
+
+Translation::~Translation()
+{
+ std::lock_guard<std::mutex>(singleton.mutex);
+
+ --singleton.refcnt;
+
+ if(singleton.refcnt == 0)
+ {
+ singleton.texts.clear();
+ }
+}
+
+bool Translation::load(const char* catalog, std::size_t size)
+{
+ Texts texts;
+
+ // https://www.gnu.org/software/gettext/manual/html_node/MO-Files.html
+
+ // byte
+ // +------------------------------------------+
+ // 0 | magic number = 0x950412de |
+ // | |
+ // 4 | file format revision = 0 |
+ // | |
+ // 8 | number of strings | == N
+ // | |
+ // 12 | offset of table with original strings | == O
+ // | |
+ // 16 | offset of table with translation strings | == T
+ // | |
+ // 20 | size of hashing table | == S
+ // | |
+ // 24 | offset of hashing table | == H
+ // | |
+ // . .
+ // . (possibly more entries later) .
+ // . .
+ // | |
+ // O | length & offset 0th string ----------------.
+ // O + 8 | length & offset 1st string ------------------.
+ // ... ... | |
+ // O + ((N-1)*8)| length & offset (N-1)th string | | |
+ // | | | |
+ // T | length & offset 0th translation ---------------.
+ // T + 8 | length & offset 1st translation -----------------.
+ // ... ... | | | |
+ // T + ((N-1)*8)| length & offset (N-1)th translation | | | | |
+ // | | | | | |
+ // H | start hash table | | | | |
+ // ... ... | | | |
+ // H + S * 4 | end hash table | | | | |
+ // | | | | | |
+ // | NUL terminated 0th string <----------------' | | |
+ // | | | | |
+ // | NUL terminated 1st string <------------------' | |
+ // | | | |
+ // ... ... | |
+ // | | | |
+ // | NUL terminated 0th translation <---------------' |
+ // | | |
+ // | NUL terminated 1st translation <-----------------'
+ // | |
+ // ... ...
+ // | |
+ // +------------------------------------------+
+ constexpr std::uint32_t magic_number_le = 0x950412de;
+ constexpr std::uint32_t magic_number_be = 0xde120495;
+
+ const char* ptr = catalog;
+
+ // Verify magic number
+ std::uint32_t magic_number = *reinterpret_cast<const std::uint32_t*>(ptr);
+ if(magic_number != magic_number_le && magic_number != magic_number_be)
+ {
+ // Error - bad magic number
+ return false;
+ }
+ ptr += sizeof(magic_number);
+
+ // Verify file format revision
+ std::uint32_t file_format_revision =
+ *reinterpret_cast<const std::uint32_t*>(ptr);
+ if(file_format_revision != 0)
+ {
+ // Error - bad file format revision
+ return false;
+ }
+ ptr += sizeof(file_format_revision);
+
+ // Read number of string in the catalog
+ std::uint32_t number_of_strings =
+ *reinterpret_cast<const std::uint32_t*>(ptr);
+ ptr += sizeof(number_of_strings);
+
+ // Read orig_table_offset
+ std::uint32_t orig_table_offset =
+ *reinterpret_cast<const std::uint32_t*>(ptr);
+ ptr += sizeof(orig_table_offset);
+
+ // Read transl_table_offset
+ std::uint32_t transl_table_offset =
+ *reinterpret_cast<const std::uint32_t*>(ptr);
+ ptr += sizeof(transl_table_offset);
+
+ // Read hash_table_size
+ std::uint32_t hash_table_size =
+ *reinterpret_cast<const std::uint32_t*>(ptr);
+ ptr += sizeof(hash_table_size);
+
+ // Read hash_table_offset
+ std::uint32_t hash_table_offset =
+ *reinterpret_cast<const std::uint32_t*>(ptr);
+ ptr += sizeof(hash_table_offset);
+
+
+ // Read original/translated string tables:
+ const char* orig_ptr = catalog + orig_table_offset;
+ const char* transl_ptr = catalog + transl_table_offset;
+ for(std::uint32_t string_index = 0;
+ string_index < number_of_strings; ++string_index)
+ {
+ // Read string_length
+ std::uint32_t orig_string_length =
+ *reinterpret_cast<const std::uint32_t*>(orig_ptr);
+ orig_ptr += sizeof(orig_string_length);
+
+ // Read string_offset
+ std::uint32_t orig_string_offset =
+ *reinterpret_cast<const std::uint32_t*>(orig_ptr);
+ orig_ptr += sizeof(orig_string_offset);
+
+ std::string orig;
+ orig.append(catalog + orig_string_offset, orig_string_length);
+
+ // Read string_length
+ std::uint32_t transl_string_length =
+ *reinterpret_cast<const std::uint32_t*>(transl_ptr);
+ transl_ptr += sizeof(transl_string_length);
+
+ // Read string_offset
+ std::uint32_t transl_string_offset =
+ *reinterpret_cast<const std::uint32_t*>(transl_ptr);
+ transl_ptr += sizeof(transl_string_offset);
+
+ std::string transl;
+ transl.append(catalog + transl_string_offset, transl_string_length);
+
+ texts.push_back(make_pair(const_hash(orig.data()), transl));
+ }
+
+ std::sort(texts.begin(), texts.end(), comparator);
+
+ {
+ std::lock_guard<std::mutex>(singleton.mutex);
+ std::swap(singleton.texts, texts);
+ }
+
+ return true;
+}
+
+const char* Translation::gettext(std::uint64_t msgid, const char* original)
+{
+ std::lock_guard<std::mutex>(singleton.mutex);
+ if(singleton.refcnt == 0)
+ {
+ return original;
+ }
+
+ auto it = std::lower_bound(singleton.texts.begin(),
+ singleton.texts.end(),
+ make_pair(msgid, std::string()), comparator);
+ if(it == singleton.texts.end() ||
+ it->first != msgid)
+ {
+ return original;
+ }
+
+ return it->second.data();
+}
+
+std::string Translation::getISO639LanguageName()
+{
+ std::string lang;
+
+#ifdef _WIN32
+ LCID lcid = GetUserDefaultLCID();
+ char name[LOCALE_NAME_MAX_LENGTH];
+ GetLocaleInfo(lcid, LOCALE_SISO639LANGNAME, name, LOCALE_NAME_MAX_LENGTH);
+ lang = name;
+#else
+ try
+ {
+ auto langstr = setlocale(LC_ALL, "");
+ if(langstr != nullptr)
+ {
+ lang = langstr;
+ }
+ }
+ catch(...)
+ {
+ // Bad locale: don't load anything - use default
+ printf("Bad locale: don't load anything - use default\n");
+ return "";
+ }
+
+ if(lang == "C")
+ {
+ printf("Don't load anything - use default\n");
+ return ""; // Don't load anything - use default
+ }
+
+ auto _ = lang.find('_');
+ lang = lang.substr(0, _);
+#endif
+
+ return lang;
+}
+
+#endif // WITH_NLS
diff --git a/src/translation.h b/src/translation.h
new file mode 100644
index 0000000..7f506a6
--- /dev/null
+++ b/src/translation.h
@@ -0,0 +1,60 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ * translation.h
+ *
+ * Sun Sep 8 14:13:22 CEST 2019
+ * Copyright 2019 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#pragma once
+
+#include <config.h>
+
+#ifdef WITH_NLS
+
+#include <memory>
+
+std::uint64_t constexpr const_hash(const char* input)
+{
+ return *input ?
+ static_cast<unsigned int>(*input) + 33 * const_hash(input + 1) :
+ 5381;
+}
+
+#define _(msg) Translation::gettext(const_hash(msg), msg)
+
+class Translation
+{
+public:
+ Translation();
+ virtual ~Translation();
+
+ bool load(const char* catalog, std::size_t size);
+
+ static const char* gettext(std::uint64_t msgid, const char* original);
+ static std::string getISO639LanguageName();
+};
+
+#else
+
+#define _(msg) msg
+
+#endif
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