mirror of
https://github.com/tesseract-ocr/tesseract.git
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94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: dawg2wordlist.cpp
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// Description: Program to create a word list from a DAWG and unicharset.
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// Author: David Eger
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// Created: Thu 22 Dec 2011
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//
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// (C) Copyright 2011, 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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#include "dawg.h"
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#include "host.h"
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#include "tesscallback.h"
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#include "trie.h"
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#include "unicharset.h"
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const int kDictDebugLevel = 1;
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tesseract::Dawg *LoadSquishedDawg(const UNICHARSET &unicharset,
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const char *filename) {
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const int kDictDebugLevel = 1;
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FILE *dawg_file = fopen(filename, "rb");
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if (dawg_file == nullptr) {
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tprintf("Could not open %s for reading.\n", filename);
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return nullptr;
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}
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tprintf("Loading word list from %s\n", filename);
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tesseract::Dawg *retval = new tesseract::SquishedDawg(
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dawg_file, tesseract::DAWG_TYPE_WORD, "eng", SYSTEM_DAWG_PERM,
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kDictDebugLevel);
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tprintf("Word list loaded.\n");
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fclose(dawg_file);
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return retval;
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}
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class WordOutputter {
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public:
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WordOutputter(FILE *file) : file_(file) {}
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void output_word(const char *word) { fprintf(file_, "%s\n", word); }
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private:
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FILE *file_;
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};
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// returns 0 if successful.
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int WriteDawgAsWordlist(const UNICHARSET &unicharset,
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const tesseract::Dawg *dawg,
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const char *outfile_name) {
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FILE *out = fopen(outfile_name, "wb");
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if (out == nullptr) {
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tprintf("Could not open %s for writing.\n", outfile_name);
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return 1;
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}
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WordOutputter outputter(out);
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TessCallback1<const char *> *print_word_cb =
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NewPermanentTessCallback(&outputter, &WordOutputter::output_word);
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dawg->iterate_words(unicharset, print_word_cb);
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delete print_word_cb;
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return fclose(out);
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}
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int main(int argc, char *argv[]) {
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if (argc != 4) {
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tprintf("Print all the words in a given dawg.\n");
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tprintf("Usage: %s <unicharset> <dawgfile> <wordlistfile>\n",
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argv[0]);
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return 1;
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}
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const char *unicharset_file = argv[1];
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const char *dawg_file = argv[2];
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const char *wordlist_file = argv[3];
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UNICHARSET unicharset;
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if (!unicharset.load_from_file(unicharset_file)) {
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tprintf("Error loading unicharset from %s.\n", unicharset_file);
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return 1;
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}
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tesseract::Dawg *dict = LoadSquishedDawg(unicharset, dawg_file);
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if (dict == nullptr) {
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tprintf("Error loading dictionary from %s.\n", dawg_file);
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return 1;
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}
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int retval = WriteDawgAsWordlist(unicharset, dict, wordlist_file);
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delete dict;
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return retval;
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}
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