/usr/include/strigi/stringstream.h is in libstreams-dev 0.7.7-1.1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | /* This file is part of Strigi Desktop Search
*
* Copyright (C) 2006 Jos van den Oever <jos@vandenoever.info>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef STRIGI_STRINGSTREAM_H
#define STRIGI_STRINGSTREAM_H
/*
* Author: Jos van den Oever
* Ben van Klinken
**/
#include "streambase.h"
#include <string.h>
namespace Strigi {
/**
* @brief Provides access to in-memory data thorugh the StreamBase API
*/
template <class T>
class StringStream : public StreamBase<T> {
private:
int64_t markpt;
T* data;
bool dataowner;
StringStream(const StringStream<T>&);
void operator=(const StringStream<T>&);
public:
/**
* @brief Create a StringStream from a given string
*
* If the string you provide is not null-terminated, or
* may not be null-terminated, you need to provide a length.
* Note that if a length is provided, null characters have
* no special meaning.
*
* If the string is created on the stack and may go out of
* scope before the StringStream is destroyed, or if it is
* created with @c new and may be destroyed before the
* StringStream, you should set @p copy to @c true.
*
* @param value pointer to the data for this StringStream
* @param length the length of the data at the pointer. If length is -1,
* it is assumed @p value is null-terminated, and this is used to
* find the end of the string
* @param copy if true a copy of the string will be used, if false
* a pointer to the original data will be used
*/
StringStream(const T* value, int32_t length = -1, bool copy = true);
~StringStream();
int32_t read(const T*& start, int32_t min, int32_t max);
int64_t skip(int64_t ntoskip);
int64_t reset(int64_t pos);
};
/** An InputStream to read from in-memory data. */
typedef StringStream<char> StringInputStream;
/** A Reader to read from in-memory data. */
typedef StringStream<wchar_t> StringReader;
template <class T>
StringStream<T>::StringStream(const T* value, int32_t length, bool copy)
: markpt(0), dataowner(copy) {
if (length < 0) {
length = 0;
while (value[length] != '\0') {
length++;
}
}
StreamBase<T>::m_size = length;
if (copy) {
data = new T[length+1];
size_t s = (size_t)(length*sizeof(T));
memcpy(data, value, s);
data[length] = 0;
} else {
// casting away const is ok, because we don't write anyway
data = (T*)value;
}
}
template <class T>
StringStream<T>::~StringStream() {
if (dataowner) {
delete [] data;
}
}
template <class T>
int32_t
StringStream<T>::read(const T*& start, int32_t min, int32_t max) {
int64_t left = StreamBase<T>::m_size - StreamBase<T>::m_position;
if (left == 0) {
StreamBase<T>::m_status = Eof;
return -1;
}
if (min < 0) min = 0;
int32_t nread = (max > left || max < 1) ?(int32_t)left :max;
start = data + StreamBase<T>::m_position;
StreamBase<T>::m_position += nread;
if (StreamBase<T>::m_position == StreamBase<T>::m_size) {
StreamBase<T>::m_status = Eof;
}
return nread;
}
template <class T>
int64_t
StringStream<T>::skip(int64_t ntoskip) {
if (ntoskip == 0) return 0;
const T* start;
return read(start, (int32_t)ntoskip, (int32_t)ntoskip);
}
template <class T>
int64_t
StringStream<T>::reset(int64_t newpos) {
if (newpos < 0) {
StreamBase<T>::m_status = Ok;
StreamBase<T>::m_position = 0;
} else if (newpos < StreamBase<T>::m_size) {
StreamBase<T>::m_status = Ok;
StreamBase<T>::m_position = newpos;
} else {
StreamBase<T>::m_position = StreamBase<T>::m_size;
StreamBase<T>::m_status = Eof;
}
return StreamBase<T>::m_position;
}
} // end namespace Strigi
#endif
|