blob: 79f93957579fa8eee5cab2d020369f292f0847b3 [file] [log] [blame]
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This tool converts Hunspell .aff/.dic pairs to a combined binary dictionary
// format (.bdic). This format is more compact, and can be more efficiently
// read by the client application.
// We do this conversion manually before publishing dictionary files. It is not
// part of any build process.
// See PrintHelp() below for usage.
#include <stddef.h>
#include <stdio.h>
#include "base/at_exit.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/i18n/icu_util.h"
#include "base/logging.h"
#include "base/process/memory.h"
#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "chrome/tools/convert_dict/aff_reader.h"
#include "chrome/tools/convert_dict/dic_reader.h"
#include "third_party/hunspell/google/bdict_reader.h"
#include "third_party/hunspell/google/bdict_writer.h"
namespace {
// Compares the given word list with the serialized trie to make sure they
// are the same.
bool VerifyWords(const convert_dict::DicReader::WordList& org_words,
const std::string& serialized) {
hunspell::BDictReader reader;
if (!reader.Init(reinterpret_cast<const unsigned char*>(,
serialized.size())) {
printf("BDict is invalid\n");
return false;
hunspell::WordIterator iter = reader.GetAllWordIterator();
int affix_ids[hunspell::BDict::MAX_AFFIXES_PER_WORD];
static const int buf_size = 128;
char buf[buf_size];
for (size_t i = 0; i < org_words.size(); i++) {
int affix_matches = iter.Advance(buf, buf_size, affix_ids);
if (affix_matches == 0) {
printf("Found the end before we expected\n");
return false;
if (org_words[i].first != buf) {
printf("Word doesn't match, word #%s\n", buf);
return false;
if (affix_matches != static_cast<int>(org_words[i].second.size())) {
printf("Different number of affix indices, word #%s\n", buf);
return false;
// Check the individual affix indices.
for (size_t affix_index = 0; affix_index < org_words[i].second.size();
affix_index++) {
if (affix_ids[affix_index] != org_words[i].second[affix_index]) {
printf("Index doesn't match, word #%s\n", buf);
return false;
return true;
int PrintHelp() {
printf("Usage: convert_dict <dicfile base name>\n\n");
printf(" convert_dict en-US\nwill read en-US.dic, en-US.dic_delta, and "
"en-US.aff from the current directory and generate en-US.bdic\n\n");
return 1;
} // namespace
#if defined(OS_WIN)
int wmain(int argc, wchar_t* argv[]) {
int main(int argc, char* argv[]) {
if (argc != 2)
return PrintHelp();
base::AtExitManager exit_manager;
base::FilePath file_base = base::FilePath(argv[1]);
base::FilePath aff_path =
printf("Reading %" PRFilePath " ...\n", aff_path.value().c_str());
convert_dict::AffReader aff_reader(aff_path);
if (!aff_reader.Read()) {
printf("Unable to read the aff file.\n");
return 1;
base::FilePath dic_path =
printf("Reading %" PRFilePath " ...\n", dic_path.value().c_str());
// DicReader will also read the .dic_delta file.
convert_dict::DicReader dic_reader(dic_path);
if (!dic_reader.Read(&aff_reader)) {
printf("Unable to read the dic file.\n");
return 1;
hunspell::BDictWriter writer;
std::string serialized = writer.GetBDict();
if (!VerifyWords(dic_reader.words(), serialized)) {
printf("ERROR converting, the dictionary does not check out OK.");
return 1;
base::FilePath out_path =
printf("Writing %" PRFilePath " ...\n", out_path.value().c_str());
FILE* out_file = base::OpenFile(out_path, "wb");
if (!out_file) {
printf("ERROR writing file\n");
return 1;
size_t written = fwrite(&serialized[0], 1, serialized.size(), out_file);
CHECK(written == serialized.size());
return 0;