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/**********************************************************************
* File: strngs.h (Formerly strings.h)
* Description: STRING class definition.
* Author: Ray Smith
*
* (C) Copyright 1991, Hewlett-Packard Ltd.
** 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 STRNGS_H
#define STRNGS_H
#include <tesseract/export.h> // for TESS_API
#include <cassert> // for assert
#include <cstdint> // for uint32_t
#include <cstdio> // for FILE
#include <cstring> // for strncpy
#include <string>
#include <vector>
namespace tesseract {
class TFile;
class STRING : public std::string {
public:
using std::string::string;
STRING(const std::string &s) : std::string(s) {}
STRING(const char *s) : std::string(s ? s : "") {}
STRING() : std::string("") {}
// Writes to the given file. Returns false in case of error.
TESS_API
bool Serialize(FILE* fp) const;
// Reads from the given file. Returns false in case of error.
// If swap is true, assumes a big/little-endian swap is needed.
TESS_API
bool DeSerialize(bool swap, FILE* fp);
// Writes to the given file. Returns false in case of error.
TESS_API
bool Serialize(tesseract::TFile* fp) const;
// Reads from the given file. Returns false in case of error.
// If swap is true, assumes a big/little-endian swap is needed.
TESS_API
bool DeSerialize(tesseract::TFile* fp);
// As DeSerialize, but only seeks past the data - hence a static method.
TESS_API
static bool SkipDeSerialize(tesseract::TFile* fp);
TESS_API
bool contains(char c) const;
int32_t size() const {
return length();
}
// Workaround to avoid g++ -Wsign-compare warnings.
uint32_t unsigned_size() const {
const int32_t len = length();
assert(0 <= len);
return static_cast<uint32_t>(len);
}
inline char* strdup() const {
int32_t len = length() + 1;
return strncpy(new char[len], c_str(), len);
}
TESS_API
void split(char c, std::vector<STRING>* splited);
TESS_API
void truncate_at(int32_t index);
// Appends the given string and int (as a %d) to this.
// += cannot be used for ints as there as a char += operator that would
// be ambiguous, and ints usually need a string before or between them
// anyway.
TESS_API
void add_str_int(const char* str, int number);
// Appends the given string and double (as a %.8g) to this.
TESS_API
void add_str_double(const char* str, double number);
};
} // namespace tesseract.
#endif
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