mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-11-28 05:39:35 +08:00
93c8e5d2d3
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@209 d0cd1f9f-072b-0410-8dd7-cf729c803f20
83 lines
2.9 KiB
C++
83 lines
2.9 KiB
C++
///////////////////////////////////////////////////////////////////////
|
|
// File: unicharmap.h
|
|
// Description: Unicode character/ligature to integer id class.
|
|
// Author: Thomas Kielbus
|
|
// Created: Wed Jun 28 17:05:01 PDT 2006
|
|
//
|
|
// (C) Copyright 2006, Google Inc.
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef TESSERACT_CCUTIL_UNICHARMAP_H__
|
|
#define TESSERACT_CCUTIL_UNICHARMAP_H__
|
|
|
|
#include "unichar.h"
|
|
|
|
// A UNICHARMAP stores unique unichars. Each of them is associated with one
|
|
// UNICHAR_ID.
|
|
class UNICHARMAP {
|
|
public:
|
|
|
|
// Create an empty UNICHARMAP
|
|
UNICHARMAP();
|
|
|
|
~UNICHARMAP();
|
|
|
|
// Insert the given unichar represention in the UNICHARMAP and associate it
|
|
// with the given id. The length of the representation MUST be non-zero.
|
|
void insert(const char* const unichar_repr, UNICHAR_ID id);
|
|
|
|
// Return the id associated with the given unichar representation,
|
|
// this representation MUST exist within the UNICHARMAP.
|
|
// The length of the representation MUST be non-zero.
|
|
UNICHAR_ID unichar_to_id(const char* const unichar_repr) const;
|
|
|
|
// Return the id associated with the given unichar representation,
|
|
// this representation MUST exist within the UNICHARMAP. The first
|
|
// length characters (maximum) from unichar_repr are used. The length
|
|
// MUST be non-zero.
|
|
UNICHAR_ID unichar_to_id(const char* const unichar_repr, int length) const;
|
|
|
|
// Return true if the given unichar representation is already present in the
|
|
// UNICHARMAP. The length of the representation MUST be non-zero.
|
|
bool contains(const char* const unichar_repr) const;
|
|
|
|
// Return true if the given unichar representation is already present in the
|
|
// UNICHARMAP. The first length characters (maximum) from unichar_repr are
|
|
// used. The length MUST be non-zero.
|
|
bool contains(const char* const unichar_repr, int length) const;
|
|
|
|
// Return the minimum number of characters that must be used from this string
|
|
// to obtain a match in the UNICHARMAP.
|
|
int minmatch(const char* const unichar_repr) const;
|
|
|
|
// Clear the UNICHARMAP. All previous data is lost.
|
|
void clear();
|
|
|
|
private:
|
|
|
|
// The UNICHARMAP is represented as a tree whose nodes are of type
|
|
// UNICHARMAP_NODE.
|
|
struct UNICHARMAP_NODE {
|
|
|
|
UNICHARMAP_NODE();
|
|
~UNICHARMAP_NODE();
|
|
|
|
UNICHARMAP_NODE* children;
|
|
UNICHAR_ID id;
|
|
};
|
|
|
|
UNICHARMAP_NODE* nodes;
|
|
};
|
|
|
|
#endif // TESSERACT_CCUTIL_UNICHARMAP_H__
|