tesseract
3.03
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00001 /********************************************************************** 00002 * File: blread.cpp (Formerly pdread.c) 00003 * Description: Friend function of BLOCK to read the uscan pd file. 00004 * Author: Ray Smith 00005 * Created: Mon Mar 18 14:39:00 GMT 1991 00006 * 00007 * (C) Copyright 1991, Hewlett-Packard Ltd. 00008 ** Licensed under the Apache License, Version 2.0 (the "License"); 00009 ** you may not use this file except in compliance with the License. 00010 ** You may obtain a copy of the License at 00011 ** http://www.apache.org/licenses/LICENSE-2.0 00012 ** Unless required by applicable law or agreed to in writing, software 00013 ** distributed under the License is distributed on an "AS IS" BASIS, 00014 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00015 ** See the License for the specific language governing permissions and 00016 ** limitations under the License. 00017 * 00018 **********************************************************************/ 00019 00020 #include <stdlib.h> 00021 #ifdef __UNIX__ 00022 #include <assert.h> 00023 #endif 00024 #include "scanutils.h" 00025 #include "fileerr.h" 00026 #include "blread.h" 00027 00028 #define UNLV_EXT ".uzn" // unlv zone file 00029 00030 /********************************************************************** 00031 * read_unlv_file 00032 * 00033 * Read a whole unlv zone file to make a list of blocks. 00034 **********************************************************************/ 00035 00036 bool read_unlv_file( //print list of sides 00037 STRING name, //basename of file 00038 inT32 xsize, //image size 00039 inT32 ysize, //image size 00040 BLOCK_LIST *blocks //output list 00041 ) { 00042 FILE *pdfp; //file pointer 00043 BLOCK *block; //current block 00044 int x; //current top-down coords 00045 int y; 00046 int width; //of current block 00047 int height; 00048 BLOCK_IT block_it = blocks; //block iterator 00049 00050 name += UNLV_EXT; //add extension 00051 if ((pdfp = fopen (name.string (), "rb")) == NULL) { 00052 return false; //didn't read one 00053 } 00054 else { 00055 while (fscanf (pdfp, "%d %d %d %d %*s", &x, &y, &width, &height) >= 4) { 00056 //make rect block 00057 block = new BLOCK (name.string (), TRUE, 0, 0, 00058 (inT16) x, (inT16) (ysize - y - height), 00059 (inT16) (x + width), (inT16) (ysize - y)); 00060 //on end of list 00061 block_it.add_to_end (block); 00062 } 00063 fclose(pdfp); 00064 } 00065 return true; 00066 } 00067 00068 void FullPageBlock(int width, int height, BLOCK_LIST *blocks) { 00069 BLOCK_IT block_it(blocks); 00070 BLOCK* block = new BLOCK("", TRUE, 0, 0, 0, 0, width, height); 00071 block_it.add_to_end(block); 00072 }