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https://github.com/tesseract-ocr/tesseract.git
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106 lines
4.2 KiB
C++
106 lines
4.2 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: wordlist2dawg.cpp
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// Description: Program to generate a DAWG from a word list file
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// Author: Thomas Kielbus
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// Created: Thu May 10 18:11:42 PDT 2007
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//
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// (C) Copyright 2006, Google Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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///////////////////////////////////////////////////////////////////////
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// Given a file that contains a list of words (one word per line) this program
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// generates the corresponding squished DAWG file.
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#include "classify.h"
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#include "commontraining.h" // CheckSharedLibraryVersion
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#include "dawg.h"
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#include "dict.h"
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#include "emalloc.h"
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#include "helpers.h"
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#include "serialis.h"
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#include "trie.h"
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#include "unicharset.h"
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int main(int argc, char** argv) {
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tesseract::CheckSharedLibraryVersion();
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if (argc > 1 && (!strcmp(argv[1], "-v") || !strcmp(argv[1], "--version"))) {
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printf("%s\n", tesseract::TessBaseAPI::Version());
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return 0;
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} else if (!(argc == 4 || (argc == 5 && strcmp(argv[1], "-t") == 0) ||
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(argc == 6 && strcmp(argv[1], "-r") == 0))) {
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printf("Usage: %s -v | --version |\n"
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" %s [-t | -r [reverse policy] ] word_list_file"
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" dawg_file unicharset_file\n", argv[0], argv[0]);
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return 1;
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}
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tesseract::Classify *classify = new tesseract::Classify();
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int argv_index = 0;
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if (argc == 5) ++argv_index;
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tesseract::Trie::RTLReversePolicy reverse_policy =
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tesseract::Trie::RRP_DO_NO_REVERSE;
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if (argc == 6) {
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++argv_index;
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int tmp_int;
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sscanf(argv[++argv_index], "%d", &tmp_int);
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reverse_policy = static_cast<tesseract::Trie::RTLReversePolicy>(tmp_int);
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tprintf("Set reverse_policy to %s\n",
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tesseract::Trie::get_reverse_policy_name(reverse_policy));
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}
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if (argc == 7) argv_index += 3;
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const char* wordlist_filename = argv[++argv_index];
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const char* dawg_filename = argv[++argv_index];
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const char* unicharset_file = argv[++argv_index];
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tprintf("Loading unicharset from '%s'\n", unicharset_file);
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if (!classify->getDict().getUnicharset().load_from_file(unicharset_file)) {
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tprintf("Failed to load unicharset from '%s'\n", unicharset_file);
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delete classify;
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return 1;
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}
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const UNICHARSET &unicharset = classify->getDict().getUnicharset();
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if (argc == 4 || argc == 6) {
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tesseract::Trie trie(
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// the first 3 arguments are not used in this case
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tesseract::DAWG_TYPE_WORD, "", SYSTEM_DAWG_PERM,
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unicharset.size(), classify->getDict().dawg_debug_level);
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tprintf("Reading word list from '%s'\n", wordlist_filename);
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if (!trie.read_and_add_word_list(wordlist_filename, unicharset,
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reverse_policy)) {
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tprintf("Failed to add word list from '%s'\n", wordlist_filename);
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exit(1);
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}
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tprintf("Reducing Trie to SquishedDawg\n");
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tesseract::SquishedDawg *dawg = trie.trie_to_dawg();
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if (dawg != nullptr && dawg->NumEdges() > 0) {
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tprintf("Writing squished DAWG to '%s'\n", dawg_filename);
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dawg->write_squished_dawg(dawg_filename);
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} else {
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tprintf("Dawg is empty, skip producing the output file\n");
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}
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delete dawg;
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} else if (argc == 5) {
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tprintf("Loading dawg DAWG from '%s'\n", dawg_filename);
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tesseract::SquishedDawg words(
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dawg_filename,
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// these 3 arguments are not used in this case
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tesseract::DAWG_TYPE_WORD, "", SYSTEM_DAWG_PERM,
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classify->getDict().dawg_debug_level);
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tprintf("Checking word list from '%s'\n", wordlist_filename);
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words.check_for_words(wordlist_filename, unicharset, true);
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} else { // should never get here
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tprintf("Invalid command-line options\n");
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exit(1);
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}
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delete classify;
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return 0;
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}
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