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https://github.com/tesseract-ocr/tesseract.git
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f9a4bc092a
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@38 d0cd1f9f-072b-0410-8dd7-cf729c803f20
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: unicharset_extractor.cpp
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// Description: Unicode character/ligature set extractor.
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// Author: Thomas Kielbus
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// Created: Wed Jun 28 17:05:01 PDT 2006
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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 list of box files on the command line, this program generates a file
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// containing a unicharset, a list of all the characters used by Tesseract
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//
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// The file contains the size of the set on the first line, and then one
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// unichar per line.
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#include <stdio.h>
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#include "unichar.h"
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#include "unicharset.h"
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#include "strngs.h"
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#include "tessopt.h"
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static const char* const kUnicharsetFileName = "unicharset";
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int main(int argc, char** argv) {
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int option;
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const char* output_directory = ".";
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STRING unicharset_file_name;
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UNICHARSET unicharset;
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// Space character needed to represent NIL classification
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unicharset.unichar_insert(" ");
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// Print usage
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if (argc <= 1) {
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printf("Usage: %s [-D DIRECTORY] FILE...\n", argv[0]);
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exit(1);
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}
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// Parse arguments
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while ((option = tessopt(argc, argv, "D" )) != EOF) {
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switch (option) {
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case 'D':
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output_directory = optarg;
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++optind;
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break;
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}
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}
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// Save file name
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unicharset_file_name = output_directory;
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unicharset_file_name += "/";
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unicharset_file_name += kUnicharsetFileName;
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// Load box files
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for (; optind < argc; ++optind) {
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printf("Extracting unicharset from %s\n", argv[optind]);
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FILE* box_file = fopen(argv[optind], "r");
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if (box_file == NULL) {
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printf("Cannot open box file %s\n", argv[optind]);
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return -1;
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}
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while (!feof(box_file)) {
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int x_min, y_min, x_max, y_max;
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char buffer[256];
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char c_string[256];
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fgets(buffer, sizeof (buffer), box_file);
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sscanf(buffer, "%s %d %d %d %d",
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c_string, &x_min, &y_min, &x_max, &y_max);
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unicharset.unichar_insert(c_string);
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}
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fclose(box_file);
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}
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// Write unicharset file
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if (unicharset.save_to_file(unicharset_file_name.string())) {
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printf("Wrote unicharset file %s.\n", unicharset_file_name.string());
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}
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else {
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printf("Cannot save unicharset file %s.\n", unicharset_file_name.string());
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return -1;
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}
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return 0;
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}
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